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192 lines
53 KiB
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<meta content="width=device-width, initial-scale=1.0, user-scalable=yes" name="viewport"/>
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<title>23 February, 2021</title>
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div.column{display: inline-block; vertical-align: top; width: 50%;}
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<title>Covid-19 Sentry</title><meta content="width=device-width, initial-scale=1.0" name="viewport"/><link href="styles/simple.css" rel="stylesheet"/><link href="../styles/simple.css" rel="stylesheet"/><link href="https://unpkg.com/aos@2.3.1/dist/aos.css" rel="stylesheet"/><script src="https://unpkg.com/aos@2.3.1/dist/aos.js"></script></head>
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<h1 data-aos="fade-down" id="covid-19-sentry">Covid-19 Sentry</h1>
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<h1 data-aos="fade-right" data-aos-anchor-placement="top-bottom" id="contents">Contents</h1>
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<ul>
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<li><a href="#from-preprints">From Preprints</a></li>
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<li><a href="#from-clinical-trials">From Clinical Trials</a></li>
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<li><a href="#from-pubmed">From PubMed</a></li>
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<li><a href="#from-patent-search">From Patent Search</a></li>
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</ul>
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<h1 data-aos="fade-right" id="from-preprints">From Preprints</h1>
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<li><strong>Socioeconomic and psychosocial adversities experienced by creative freelancers in the UK during the COVID-19 pandemic: A qualitative study.</strong> -
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<div>
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There are concerns that the socioeconomic consequences of COVID-19, including unemployment and financial insecurity, are having adverse effects on the mental wellbeing of the population. One group particularly vulnerable to socioeconomic adversity during this period are those employed freelance within the creative and cultural industries. Many workers in the sector were already subject to income instability, erratic work schedules and a lack of economic security before the pandemic, and it is possible that COVID-19 may exacerbate pre-existing economic precarity. Through interviews with 20 freelancers working within the performing arts, visual arts, and film and television industries, this article explores the impact of the pandemic on their working lives. Findings suggest the pandemic is affecting the psychological wellbeing of freelancers through employment loss, financial instability and work dissonance, and illustrates the need for urgent economic and psychosocial support for those employed within this sector.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://osf.io/preprints/socarxiv/74sdr/" target="_blank">Socioeconomic and psychosocial adversities experienced by creative freelancers in the UK during the COVID-19 pandemic: A qualitative study.</a>
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</div></li>
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<li><strong>On the Road to Enlightenment: Tracking Changes in Information and Exploring Knowledge Accuracy During the Early Stages of the COVID-19 Pandemic in the United States</strong> -
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Information about the COVID-19 pandemic changed rapidly over time as researchers learned details about the symptoms, transmission, and prevention of the disease. The onslaught of continually changing information created confusion and misinformation shared by the public and world leaders. This study tracked weekly changes of basic information about the COVID-19 pandemic and assessed the accuracy of information learned by the participants over nine weeks. Additionally, the study assessed factors that could influence the amount of accurate information learned. Results indicated that as the weeks progressed, overall accuracy varied, but the fifth week showed a decline in scores. Lastly, trust and use of certain media sources, along with residence and education level predicted accuracy scores.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://psyarxiv.com/zrs3k/" target="_blank">On the Road to Enlightenment: Tracking Changes in Information and Exploring Knowledge Accuracy During the Early Stages of the COVID-19 Pandemic in the United States</a>
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</div></li>
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<li><strong>WORKING PAPER - Digital News Media Coverage on Sexual and Gender-Based Violence in Kenya: Scoping the Impact of the COVID-19 Pandemic</strong> -
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<div>
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Working Paper - Aga Khan University, Kenya. Background: Sexual and gender-based violence (SGBV) in Kenya is frequently covered in digital news media. As a powerful influencer of public opinion, news media coverage can have a significant societal impact. This scoping review identifies the extent, nature, and themes of all available digital news media coverage on SGBV in Kenya from June 2019 to July 2020. It analyzes changes in coverage since the start of the COVID-19 pandemic. Method: The methodological framework for scoping reviews developed by Arksey and O’Malley (2005) guided the scoping review. The selected articles were analyzed using NVivo. Results: Analysis of the 340 included articles indicates clear trends in news media coverage on SGBV in Kenya. Before the COVID-19 pandemic, trends include high numbers of news reports, feature articles, and opinion pieces on SGBV, female genital mutilation (FGM) as the most covered form of SGBV, and opinion pieces in line with the Kenya Vision 2030 agenda. Since the implementation of the COVID-19 mitigation measures in Kenya, trends include an increase in news media coverage on SGBV, extensive reporting on the causes of the rise in SGBV cases in Kenya, and increased media attention for domestic and sexual violence. Conclusions: Analysis of the news media coverage demonstrates the health advocacy/agenda-setting role of the media. The increased reporting on SGBV since the implementation of the COVID-19 mitigation measures could facilitate broad-based awareness.
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</div>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://osf.io/preprints/socarxiv/vbku6/" target="_blank">WORKING PAPER - Digital News Media Coverage on Sexual and Gender-Based Violence in Kenya: Scoping the Impact of the COVID-19 Pandemic</a>
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</div></li>
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<li><strong>Modeling SARS-CoV-2 infection and its individual differences with ACE2-expressing human iPS cells</strong> -
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Genetic differences are a primary reason for differences in the susceptibility and severity of coronavirus disease 2019 (COVID-19). Because induced pluripotent stem (iPS) cells maintain the genetic information of the donor, they can be used to model individual differences in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in vitro. Notably, undifferentiated human iPS cells themselves cannot be infected bySARS-CoV-2. Using adenovirus vectors, here we found that human iPS cells expressing the SARS-CoV-2 receptor angiotensin-converting enzyme 2 (ACE2) (ACE2-iPS cells) can be infected with SARS-CoV-2. In infected ACE2-iPS cells, the expression of SARS-CoV-2 nucleocapsid protein, the budding of viral particles, the production of progeny virus, double membrane spherules, and double-membrane vesicles were confirmed. We also evaluated COVID-19 therapeutic drugs in ACE2-iPS cells and confirmed the strong antiviral effects of Remdesivir, EIDD-2801, and interferon-beta. In addition, we performed SARS-CoV-2 infection experiments on ACE2-iPS/ES cells from 8 individuals. Male iPS/ES cells were more capable of producing the virus as compared with female iPS/ES cells. These findings suggest that ACE2-iPS cells can not only reproduce individual differences in SARS-CoV-2 infection in vitro, but they are also a useful resource to clarify the causes of individual differences in COVID-19 due to genetic differences.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.22.432218v1" target="_blank">Modeling SARS-CoV-2 infection and its individual differences with ACE2-expressing human iPS cells</a>
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</div></li>
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<li><strong>Experimental evidence for enhanced receptor binding by rapidly spreading SARS-CoV-2 variants</strong> -
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<div>
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Rapidly spreading new variants of SARS-CoV-2 carry multiple mutations in the viral spike protein which attaches to the angiotensin converting enzyme 2 (ACE2) receptor on host cells. Among these mutations are amino acid changes N501Y (lineage B.1.1.7, first identified in the UK), and the combination N501Y, E484K, K417N (B.1.351, first identified in South Africa), all located at the interface on the receptor binding domain (RBD). We experimentally establish that RBD containing the N501Y mutation results in 9-fold stronger binding to the hACE2 receptor than wild type RBD. The E484K mutation does not significantly influence the affinity for the receptor, while K417N attenuates affinity. As a result, RBD from B.1.351 containing all three mutations binds 3-fold stronger to hACE2 than wild type RBD but 3-fold weaker than N501Y. The recently emerging double mutant E484K/N501Y binds as tight as N501Y. The independent evolution of lineages containing mutations with different effects on receptor binding affinity, viral transmission and immune evasion underscores the importance of global viral genome surveillance and functional characterization.
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.22.432357v1" target="_blank">Experimental evidence for enhanced receptor binding by rapidly spreading SARS-CoV-2 variants</a>
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</div></li>
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<li><strong>High-Throughput, Single-Copy Sequencing Reveals SARS-CoV-2 Spike Variants Coincident with Mounting Humoral Immunity during Acute COVID-19</strong> -
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Tracking evolution of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) within infected individuals will help elucidate coronavirus disease 2019 (COVID-19) pathogenesis and inform use of antiviral interventions. In this study, we developed an approach for sequencing the region encoding the SARS-CoV-2 virion surface proteins from large numbers of individual virus RNA genomes per sample. We applied this approach to the WA-1 reference clinical isolate of SARS-CoV-2 passaged in vitro and to upper respiratory samples from 7 study participants with COVID-19. SARS-CoV-2 genomes from cell culture were diverse, including 18 haplotypes with non-synonymous mutations clustered in the spike NH2-terminal domain (NTD) and furin cleavage site regions. By contrast, cross-sectional analysis of samples from participants with COVID-19 showed fewer virus variants, without structural clustering of mutations. However, longitudinal analysis in one individual revealed 4 virus haplotypes bearing 3 independent mutations in a spike NTD epitope targeted by autologous antibodies. These mutations arose coincident with a 6.2-fold rise in serum binding to spike and a transient increase in virus burden. We conclude that SARS-CoV-2 exhibits a capacity for rapid genetic adaptation that becomes detectable in vivo with the onset of humoral immunity, with the potential to contribute to delayed virologic clearance in the acute setting.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.21.432184v1" target="_blank">High-Throughput, Single-Copy Sequencing Reveals SARS-CoV-2 Spike Variants Coincident with Mounting Humoral Immunity during Acute COVID-19</a>
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</div></li>
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<li><strong>Acquisition of the L452R mutation in the ACE2-binding interface of Spike protein triggers recent massive expansion of SARS-Cov-2 variants</strong> -
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<div>
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The recent rise in mutational variants of SARS-CoV-2, especially with changes in the Spike protein, is of significant concern due to the potential ability for these mutations to increase viral infectivity, virulence and/or ability to escape protective antibodies. Here, we investigated genetic variations in a 414-583 amino acid region of the Spike protein, partially encompassing the ACE2 receptor-binding domain (RBD), across a subset of 570 nasopharyngeal samples isolated between April 2020 and February 2021, from Washington, California, Arizona, Colorado, Minnesota and Illinois. We found that samples isolated since November have an increased number of amino acid mutations in the region, with L452R being the dominant mutation. This mutation is associated with a recently discovered CAL.20C viral variant from clade 20C, lineage B.1.429, that since November-December 2020 is associated with multiple outbreaks and is undergoing massive expansion across California. In some samples, however, we found a distinct L452R-carrying variant of the virus that, upon detailed analysis of the GISAID database genomes, is also circulating primarily in California, but emerged even more recently. The newly identified variant derives from the clade 20A (lineage B.1.232) and is named CAL.20A. We also found that the SARS-CoV-2 strain that caused the only recorded case of infection in an ape - gorillas in the San Diego Zoo, reported in January 2021 - is CAL.20A. In contrast to CAL.20C that carries two additional to L452R mutations in the Spike protein, L452R is the only mutation found in CAL.20A. According to the phylogenetic analysis, however, emergence of CAL.20C was also specifically triggered by acquisition of the L452R mutation. Further analysis of GISAID-deposited genomes revealed that several independent L452R-carrying lineages have recently emerged across the globe, with over 90% of the isolates reported between December 2020 -February 2021. Taken together, these results indicate that the L452R mutation alone is of significant adaptive value to SARS-CoV-2 and, apparently, the positive selection for this mutation became particularly strong only recently, possibly reflecting viral adaptation to the containment measures or increasing population immunity. While the functional impact of L452R has not yet been extensively evaluated, leucine-452 is positioned in the receptor-binding motif of RBD, in the interface of direct contact with the ACE2 receptor. Its replacement with arginine is predicted to result in both a much stronger binding to the receptor and escape from neutralizing antibodies. If true, this in turn might lead to significantly increased infectivity of the L452R variants, warranting their close surveillance and in-depth functional studies.
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</div>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.22.432189v1" target="_blank">Acquisition of the L452R mutation in the ACE2-binding interface of Spike protein triggers recent massive expansion of SARS-Cov-2 variants</a>
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</div></li>
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<li><strong>An Autoantigen Profile of Human A549 Lung Cells Reveals Viral and Host Etiologic Molecular Attributes of Autoimmunity in COVID-19</strong> -
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<div>
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We aim to establish a comprehensive COVID-19 autoantigen atlas in order to understand autoimmune diseases caused by SARS-CoV-2 infection. Based on the unique affinity between dermatan sulfate and autoantigens, we identified 348 proteins from human lung A549 cells, of which 198 are known targets of autoantibodies. Comparison with current COVID data identified 291 proteins that are altered at protein or transcript level in SARS-CoV-2 infection, with 191 being known autoantigens. These known and putative autoantigens are significantly associated with viral replication and trafficking processes, including gene expression, ribonucleoprotein biogenesis, mRNA metabolism, translation, vesicle and vesicle-mediated transport, and apoptosis. They are also associated with cytoskeleton, platelet degranulation, IL-12 signaling, and smooth muscle contraction. Host proteins that interact with and that are perturbed by viral proteins are a major source of autoantigens. Orf3 induces the largest number of protein alterations, Orf9 affects the mitochondrial ribosome, and they and E, M, N, and Nsp proteins affect protein localization to membrane, immune responses, and apoptosis. Phosphorylation and ubiquitination alterations by viral infection define major molecular changes in autoantigen origination. This study provides a large list of autoantigens as well as new targets for future investigation, e.g., UBA1, UCHL1, USP7, CDK11A, PRKDC, PLD3, PSAT1, RAB1A, SLC2A1, platelet activating factor acetylhydrolase, and mitochondrial ribosomal proteins. This study illustrates how viral infection can modify host cellular proteins extensively, yield diverse autoantigens, and trigger a myriad of autoimmune sequelae.
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.21.432171v1" target="_blank">An Autoantigen Profile of Human A549 Lung Cells Reveals Viral and Host Etiologic Molecular Attributes of Autoimmunity in COVID-19</a>
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<li><strong>Laser-facilitated epicutaneous immunization with SARS-CoV-2 spike protein induces ACE2 blocking antibodies in mice</strong> -
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The skin represents an attractive target tissue for vaccination against respiratory viruses such as SARS-CoV-2. Laser-facilitated epicutaneous immunization (EPI) has been established as a novel technology to overcome the skin barrier, which combines efficient delivery via micropores with an inherent adjuvant effect due to the release of danger-associated molecular patterns. Here we delivered the S1 subunit of the Spike protein of SARS-CoV-2 to the skin of BALB/c mice via laser-generated micropores with or without CpG-ODN1826 or the B subunit of heat-labile enterotoxin of E.coli (LT-B). EPI induced serum IgG titers of 1:3200 that could be boosted 5 to 10-fold by co-administration of LT-B and CpG, respectively. Sera were able to inhibit binding of the spike protein to its receptor ACE2. Our data indicate that delivery of recombinant spike protein via the skin may represent an alternative route for vaccines against Covid-19.
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.22.432259v1" target="_blank">Laser-facilitated epicutaneous immunization with SARS-CoV-2 spike protein induces ACE2 blocking antibodies in mice</a>
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<li><strong>Nanoceutical Fabric Prevents COVID-19 Spread through Expelled Respiratory Droplets: A Combined Computational, Spectroscopic and Anti-microbial Study</strong> -
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Centers for Disease Control and Prevention (CDC) warns the use of one-way valves or vents in free masks for potential threat of spreading COVID-19 through expelled respiratory droplets. Here, we have developed a nanoceutical cotton fabric duly sensitized with non-toxic zinc oxide nanomaterial for potential use as membrane filter in the one way valve for the ease of breathing without the threat of COVID-19 spreading. A detailed computational study revealed that zinc oxide nanoflowers (ZnO NF) with almost two-dimensional petals trap SARS-CoV-2 spike proteins, responsible to attach to ACE-2 receptors in human lung epithelial cells. The study also confirm significant denaturation of the spike proteins on the ZnO surface, revealing removal of virus upon efficient trapping. Following the computational study, we have synthesized ZnO NF on cotton matrix using hydrothermal assisted strategy. Electron microscopic, steady-state and picosecond resolved spectroscopic studies confirm attachment of ZnO NF to the cotton (i.e., cellulose) matrix at atomic level to develop the nanoceutical fabric. A detailed antimicrobial assay using Pseudomonas aeruginosa bacteria (model SARS-CoV-2 mimic) reveals excellent anti-microbial efficiency of the developed nanoceutical fabric. To our understanding the novel nanoceutical fabric used in one-way valve of a face mask would be the choice to assure breathing comfort along with source control of COVID-19 infection. The developed nanosensitized cloth can also be used as antibacterial/anti CoV-2 washable dress material in general.
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.02.20.432081v1" target="_blank">Nanoceutical Fabric Prevents COVID-19 Spread through Expelled Respiratory Droplets: A Combined Computational, Spectroscopic and Anti-microbial Study</a>
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<li><strong>Demographic benchmarks for equitable coverage of the COVID-19 vaccination program among priority populations</strong> -
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We report the demographic distribution of non-institutionalized populations in the US who are prioritized for COVID-19 vaccination by ethnicity, age and sex and region. The composition of non-institutionalized priority populations was estimated using a nationally representative sample of 25,417 adults interviewed in the National Health Interview Survey (NHIS) in 2018. A relatively large fraction of individuals prioritized for the earliest distribution of the vaccine are women, non-Hispanic Black, and young to middle aged adults. Overall, the study provides a platform to track equity in vaccine coverage and to better tailor health communication strategies.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.02.18.21251992v1" target="_blank">Demographic benchmarks for equitable coverage of the COVID-19 vaccination program among priority populations</a>
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<li><strong>Methodological Approach for Wastewater Based Epidemiological Studies for SARS-CoV-2</strong> -
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Post COVID-19 outbreak, wastewater-based epidemiology (WBE) studies as surveillance system is becoming an emerging interest due to its functional advantage as tool for early warning signal and to catalyze effective disease management strategies based on the community diagnosis. A comprehensive attempt was made in this study to define a methodological approach for conducting WBE studies in the framework of identifying/selection of surveillance sites, standardizing sampling policy, designing sampling protocols to improve sensitivity, adopting safety protocol, and interpreting the data. The methodology was applied to a community and studied its epidemiological status with reference to occurrence, persistence, and variation of SARS-CoV-2 genome load in wastewater system to understand the prevalence of infection. Hourly and daily grab samples were analyzed and compared with the composite samples over a surveillance window of 7 days. Based on the SARS-CoV-2 RNA copies/L, faeces shedding, and volume of sewage generated the infected individuals and the population who are in active phase in the studied community was estimated.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.02.17.21251905v1" target="_blank">Methodological Approach for Wastewater Based Epidemiological Studies for SARS-CoV-2</a>
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<li><strong>Effectiveness of Non-Pharmaceutical Interventions on Child and Staff COVID-19 Cases in US Summer Camps</strong> -
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Background. Most camps remained closed during Summer 2020, due to concerns regarding child transmission of SARS-CoV-2 and limited information about the effectiveness of non-pharmaceutical interventions (NPIs) within child congregate settings. Methods. We surveyed US camps about on-site operations, camper and staff demographics, COVID-19 cases amongst campers and staff, and NPI usage as related to pre-camp quarantines, facial coverings, physical distancing, cleaning, and facility modifications. For all NPIs, save quarantines, responses were provided on a 5-point Likert scale format. Results. Within 486 on-site camps, a range of NPIs were instituted, most often related to reduced camper interactions, staff face coverings, cleaning, and hand hygiene. Camper facial coverings were less common, with campers always wearing masks at ~34% of the camps. Approximately 15% of camps reported 1+ confirmed COVID-19 case in either campers or staff, with three camps reporting a COVID outbreak. In both single and multi-NPI analyses, the risk of COVID-19 cases was lowest when campers always wore facial coverings. While less effective, constant use of staff facial coverings and targeted physical distancing measures, but not pre-camp quarantine, also reduced COVID-19 risks. Conclusions. We found constant facial coverings, especially for campers, and targeted physical distancing measures to reduce risks of SARS-CoV-2 transmission within summer camps. Our findings provide valuable guidance for future operations of camp and other child congregate settings with regard to efficient and effective NPI usage to mitigate SARS-CoV-2 infection.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.02.18.21250271v1" target="_blank">Effectiveness of Non-Pharmaceutical Interventions on Child and Staff COVID-19 Cases in US Summer Camps</a>
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<li><strong>Targeting the Coronavirus Nucleocapsid Protein through GSK-3 Inhibition</strong> -
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The coronaviruses responsible for severe acute respiratory syndrome (SARS-CoV), COVID-19 (SARS-CoV-2), Middle East respiratory syndrome (MERS-CoV), and other coronavirus infections express a nucleocapsid protein (N) that is essential for viral replication, transcription, and virion assembly. Phosphorylation of N from SARS-CoV by glycogen synthase kinase 3 (GSK-3) is required for its function and inhibition of GSK-3 with lithium impairs N phosphorylation, viral transcription, and replication. Here we report that the SARS-CoV-2 N protein contains GSK-3 consensus sequences and that this motif is conserved in diverse coronaviruses, despite limited overall sequence conservation, raising the possibility that SARS-CoV-2 may be sensitive to GSK-3 inhibitors including lithium. We conducted a retrospective analysis of lithium use in patients from three major health systems who were PCR tested for SARS-CoV-2. We found that patients taking lithium have a significantly reduced risk of COVID-19 (odds ratio = 0.51 [0.34 - 0.76], p = 0.001). We also show that the SARS-CoV-2 N protein is phosphorylated by GSK-3. Knockout of GSK3A and GSK3B demonstrates that GSK-3 is essential for N phosphorylation. Alternative GSK-3 inhibitors block N phosphorylation and impair replication in SARS-CoV-2 infected lung epithelial cells in a cell-type dependent manner. Targeting GSK-3 may therefore provide a new approach to treat COVID-19 and future coronavirus outbreaks.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.02.17.21251933v1" target="_blank">Targeting the Coronavirus Nucleocapsid Protein through GSK-3 Inhibition</a>
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<li><strong>Diagnostic accuracy of RT-PCR for detection of SARS-CoV-2 compared to a composite reference standard in hospitalized patients</strong> -
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Background: COVID 19 caused by the novel coronavirus SARS CoV 2 has caused the greatest public health emergency of our time. Accurate laboratory detection of the virus is critical in order to contain the spread. Although real time polymerase chain reaction (PCR) has been the cornerstone of laboratory diagnosis, there have been conflicting reports on the diagnostic accuracy of this method. Methods: A retrospective review was performed on all hospitalized patients tested for SARS CoV 2 (at St. Pauls Hospital in Vancouver, BC) from March 13 to April 12, 2020. Diagnostic accuracy of initial PCR on nasopharyngeal (NP) swabs was determined against a composite reference standard which included a clinical assessment of the likelihood of COVID 19 by medical experts, initial and repeat PCR, and post-hoc serological testing. Results: A total of 323 patients were included in the study, 33 (10.2%) tested positive and 290 (89.8%) tested negative by initial PCR. Patients testing positive were more likely to exhibit features of cough (66.7% vs 39.3%), shortness of breath (63.6% vs 35.9%), fever (72.7% vs 27.6%), radiographic findings (83.3% vs 39.6%) and severe outcomes including ICU admission (24.2% vs 9.7%) and mortality (21.2% vs 6.2%) compared to patients testing negative. Serology was performed on 90 patients and correlation between serology and PCR was 98.9%. There were 90 patients included in the composite reference standard. Compared to the composite reference standard, initial PCR had sensitivity of 94.7% (95% CI 74.0 to 99.9%), specificity of 100% (95% CI 94.9 to 100%), positive predictive value of 100% (95% CI 81.5 to 100%) and a negative predictive value of 98.6% (95% CI 92.5 to 100%). Discussion: Our study showed high sensitivity of PCR on NP swab specimens when compared to composite reference standard in hospitalized patients. High correlation of PCR with serological testing further increased confidence in the diagnostic reliability of properly collected NP swabs.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.02.18.21252016v1" target="_blank">Diagnostic accuracy of RT-PCR for detection of SARS-CoV-2 compared to a composite reference standard in hospitalized patients</a>
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<h1 data-aos="fade-right" id="from-clinical-trials">From Clinical Trials</h1>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Protecting Native Families From COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Behavioral: Motivational Interviewing; Behavioral: COVID-19 Symptom Monitoring System; Behavioral: Motivational Interviewing and COVID-19 Symptom Monitoring System; Other: Supportive Services<br/><b>Sponsor</b>: Johns Hopkins Bloomberg School of Public Health<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>COVID Antithrombotic Rivaroxaban Evaluation</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Drug: Rivaroxaban 10 mg<br/><b>Sponsors</b>: Hospital Alemão Oswaldo Cruz; Bayer; Hospital Israelita Albert Einstein; Hospital do Coracao; Hospital Sirio-Libanes; Hospital Moinhos de Vento; Brazilian Research In Intensive Care Network; Brazilian Clinical Research Institute<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>An Exploratory Study to Describe Virological Effect, Safety, and Pharmacokinetics of VIR-7831 Monoclonal Antibody in Hospitalized Participants With COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Biological: VIR-7831; Biological: Placebo; Drug: Standard of care<br/><b>Sponsors</b>: GlaxoSmithKline; Vir Biotechnology, Inc.<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Efficacy and Safety of Tofacitinib in Patients With COVID-19 Pneumonia</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Drug: Tofacitinib<br/><b>Sponsor</b>: I.M. Sechenov First Moscow State Medical University<br/><b>Completed</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Improvement of the Nutritional Status Regarding Nicotinamide (Vitamin B3) and the Disease Course of COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Dietary Supplement: Nicotinamide; Dietary Supplement: Placebo<br/><b>Sponsor</b>: University Hospital Schleswig-Holstein<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A Study to Assess the Safety and Immunogenicity of the Coronavac Vaccine Against COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Biological: Adsorbed COVID-19 (inactivated) Vaccine<br/><b>Sponsors</b>: D’Or Institute for Research and Education; Butantan Institute<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Study to Evaluate the Efficacy and Safety of Remdesivir in Participants With Severely Reduced Kidney Function Who Are Hospitalized for Coronavirus Disease 2019 (COVID-19)</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Drug: Remdesivir; Drug: RDV Placebo; Drug: Standard of Care<br/><b>Sponsor</b>: Gilead Sciences<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>COVID-19 Convalescent Plasma Therapy</strong> - <b>Conditions</b>: SARS-CoV-2 Infection; COVID-19 Infection<br/><b>Intervention</b>: Biological: Convalescent plasma<br/><b>Sponsors</b>: Angelica Samudio; Consejo Nacional de Ciencias y Tecnología, Paraguay; Ministerio de Salud Pública y Bienestar Social, Paraguay; Centro de información y recursos para el desarrollo, Paraguay<br/><b>Completed</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>COVID-19 Treatment Cascade Optimization Study</strong> - <b>Condition</b>: COVID-19 Testing<br/><b>Interventions</b>: Behavioral: Navigation Services; Behavioral: Critical Dialogue; Behavioral: Brief Counseling; Behavioral: Referral and Digital Brochure<br/><b>Sponsors</b>: University of Illinois at Urbana-Champaign; North Jersey Community Research Initiative; National Institute on Minority Health and Health Disparities (NIMHD); University of Michigan<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Adoptive SARS-CoV-2 Specific T Cell Transfer in Patients at Risk for Severe COVID-19</strong> - <b>Condition</b>: Moderate COVID-19-infection<br/><b>Interventions</b>: Drug: IMP 1,000 plus SoC; Drug: IMP 5,000 plus SoC; Drug: IMP RP2D plus SoC; Drug: SoC<br/><b>Sponsors</b>: Universitätsklinikum Köln; ZKS Köln; MMH Institute for Transfusion Medicine; Miltenyi Biomedicine GmbH<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>An Effectiveness Study of the Sinovac’s Adsorbed COVID-19 (Inactivated) Vaccine</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Biological: Adsorbed COVID-19 (Inactivated) Vaccine<br/><b>Sponsor</b>: Butantan Institute<br/><b>Enrolling by invitation</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>The Safety and Efficacy of FB2001 in Healthy Subjects and Patients With COVID-19 Infection</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Drug: FB2001; Drug: FB2001 Placebo<br/><b>Sponsor</b>: Frontier Biotechnologies Inc.<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A Safety and Immunogenicity Study of Inactivated SARS-CoV-2 Vaccine (Vero Cells) in Healthy Population Aged 18 Years and Above(COVID-19)</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Biological: medium dosage inactivated SARS-CoV-2 vaccine; Biological: high dosage inactivated SARS-CoV-2 vaccine; Biological: Placebo<br/><b>Sponsors</b>: Beijing Minhai Biotechnology Co., Ltd; Shenzhen Kangtai Biological Products Co., LTD; Jiangsu Province Centers for Disease Control and Prevention<br/><b>Active, not recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A Study to Evaluate Safety and Immunogenicity of Inactivated SARS-CoV-2 Vaccine (Vero Cells) in Healthy Population Aged 18 Years and Above(COVID-19)</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Biological: medium dosage inactivated SARS-CoV-2 vaccine; Biological: high dosage inactivated SARS-CoV-2 vaccine; Biological: Placebo<br/><b>Sponsors</b>: Beijing Minhai Biotechnology Co., Ltd; Shenzhen Kangtai Biological Products Co., LTD; Jiangsu Province Centers for Disease Control and Prevention<br/><b>Active, not recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Effect of Prone Position onV/Q Matching in Non-intubated Patients With COVID-19</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Other: prone position<br/><b>Sponsor</b>: Southeast University, China<br/><b>Not yet recruiting</b></p></li>
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</ul>
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<h1 data-aos="fade-right" id="from-pubmed">From PubMed</h1>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Potential therapeutic road for targeting the SARS-CoV-2 at throat</strong> - CONCLUSION: In view of the fact that the mouth and nose have higher number of ACE2 expressed cells, they serve as a gateway for the virus to enter. Thus, blocking the gate could be a good choice to reduce or even prevent the transmission. Small interfering RNAs (siRNAs) are double-stranded RNA molecules and could be designed easily and directed against many strains of a virus. Due to their features, siRNAs can provide a potential strategy to interfere with the replication of viral diseases. We…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Synthesis of silver nanoparticles using gum Arabic: Evaluation of its inhibitory action on Streptococcus mutans causing dental caries and endocarditis</strong> - CONCLUSION: The potent antibiotic action over S. mutans seen with the synthesized NPs, paves the way for the development of novel dental care products. Also, the small-sized NPs promote its applicability in COVID-19 pandemic containment.</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>In silico identification of available drugs targeting cell surface BiP to disrupt SARS-CoV-2 binding and replication: Drug repurposing approach</strong> - AIMS: Cell surface binding immunoglobin protein (csBiP) is predicted to be susceptible to SARS-CoV-2 binding. With a substrate-binding domain (SBD) that binds to polypeptides and a nucleotide-binding domain (NBD) that can initiate extrinsic caspase-dependent apoptosis, csBiP may be a promising therapeutic target for COVID-19. This study aims to identify FDA-approved drugs that can neutralize viral binding and prevent viral replication by targeting the functional domains of csBiP.</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Selective targeting of the inactive state of hematopoietic cell kinase (Hck) with a stable curcumin derivative</strong> - Hck, a Src family non-receptor tyrosine kinase (SFK), has recently been established as an attractive pharmacological target to improve pulmonary function in COVID-19 patients. Hck inhibitors are also well known for their regulatory role in various malignancies and autoimmune diseases. Curcumin has been previously identified as an excellent DYRK-2 inhibitor, but curcumin’s fate is tainted by its instability in the cellular environment. Besides, small molecules targeting the inactive states of a…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>DNA Nanostructures in the Fight Against Infectious Diseases</strong> - Throughout history, humanity has been threatened by countless epidemic and pandemic outbreaks of infectious diseases, from the Justinianic Plague to the Spanish flu to COVID-19. While numerous antimicrobial and antiviral drugs have been developed over the last 200 years to face these threats, the globalized and highly connected world of the 21st century demands for an ever-increasing efficiency in the detection and treatment of infectious diseases. Consequently, the rapidly evolving field of…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Antibacterial and Antiviral Functional Materials: Chemistry and Biological Activity toward Tackling COVID-19-like Pandemics</strong> - The ongoing worldwide pandemic due to COVID-19 has created awareness toward ensuring best practices to avoid the spread of microorganisms. In this regard, the research on creating a surface which destroys or inhibits the adherence of microbial/viral entities has gained renewed interest. Although many research reports are available on the antibacterial materials or coatings, there is a relatively small amount of data available on the use of antiviral materials. However, with more research geared…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Nanotechnology: an emerging approach to combat COVID-19</strong> - The recent outbreak of coronavirus disease (COVID-19) has challenged the survival of human existence in the last 1 year. Frontline healthcare professionals were struggling in combating the pandemic situation and were continuously supported with literature, skill set, research activities, and technologies developed by various scientists/researchers all over the world. To handle the continuously mutating severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) requires amalgamation of…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Stapled ACE2 peptidomimetics designed to target the SARS-CoV-2 spike protein do not prevent virus internalization</strong> - COVID-19 is caused by a novel coronavirus called severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). Virus cell entry is mediated through a protein-protein interaction (PPI) between the SARS-CoV-2 spike protein and angiotensin-converting enzyme 2 (ACE2). A series of stapled peptide ACE2 peptidomimetics based on the ACE2 interaction motif were designed to bind the coronavirus S-protein RBD and inhibit binding to the human ACE2 receptor. The peptidomimetics were assessed for antiviral…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>The Perspectives of Biomarkers based Electrochemical Immunosensors, Artificial intelligence and the Internet of Medical Things towards COVID-19 Diagnosis and Management</strong> - The WHO has declared the COVID-19 an international health emergency due to the severity of infection progression which become more severe due to its continuous spread globally and the unavailability of appropriate therapy and diagnostics systems. Thus, there is a need for efficient devices to detect SARS-CoV-2 infection at an early stage. Nowadays, the RT-PCR technique is being applied for detecting this virus around the globe; however, factors such as stringent expertise, long diagnostic times,…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Corrigendum to “mTOR inhibition and p53 activation, microRNAs: The possible therapy against pandemic COVID-19” [Gene Rep. 20 (2020) 100765]</strong> - [This corrects the article DOI: 10.1016/j.genrep.2020.100765.].</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Virus-Free and Live-Cell Visualizing SARS-CoV-2 Cell Entry for Studies of Neutralizing Antibodies and Compound Inhibitors</strong> - The ongoing corona virus disease 2019 (COVID-19) pandemic, caused by SARS-CoV-2 infection, has resulted in hundreds of thousands of deaths. Cellular entry of SARS-CoV-2, which is mediated by the viral spike protein and ACE2 receptor, is an essential target for the development of vaccines, therapeutic antibodies, and drugs. Using a mammalian cell expression system, a genetically engineered sensor of fluorescent protein (Gamillus)-fused SARS-CoV-2 spike trimer (STG) to probe the viral entry…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Social mobilization and polarization can create volatility in COVID-19 pandemic control</strong> - During the COVID-19 pandemic, political polarization has emerged as a significant threat that inhibits coordinated action of central and local institutions reducing the efficacy of non-pharmaceutical interventions (NPIs). Yet, it is not well-understood to what extent polarization can affect grass-roots, voluntary social mobilization targeted at mitigating the pandemic spread. Here, we propose a polarized mobilization model amidst the pandemic for demonstrating the differential responses to…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>In silico Exploration of Inhibitors for SARS-CoV-2’s Papain-Like Protease</strong> - Coronavirus disease 2019 (COVID-19) is an ongoing global pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), with very limited treatments so far. Demonstrated with good druggability, two major proteases of SARS-CoV-2, namely main protease (Mpro) and papain-like protease (PLpro) that are essential for viral maturation, have become the targets for many newly designed inhibitors. Unlike Mpro that has been heavily investigated, PLpro is not well-studied so far. Here, we…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>In Silico Study of Coumarins and Quinolines Derivatives as Potent Inhibitors of SARS-CoV-2 Main Protease</strong> - The pandemic that started in Wuhan (China) in 2019 has caused a large number of deaths, and infected people around the world due to the absence of effective therapy against coronavirus 2 of the severe acute respiratory syndrome (SARS-CoV-2). Viral maturation requires the activity of the main viral protease (M^(pro)), so its inhibition stops the progress of the disease. To evaluate possible inhibitors, a computational model of the SARS-CoV-2 enzyme M^(pro) was constructed in complex with 26…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Landscape Profiling Analysis of DPP4 in Malignancies: Therapeutic Implication for Tumor Patients With Coronavirus Disease 2019</strong> - Severe coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is characterized by pneumonia, lymphopenia, and cytokine storms. Patients with underlying conditions, and especially cancer patients with impaired immunity, are particularly vulnerable to SARS-CoV-2 infection and complications. Although angiotensin converting enzyme II (ACE2) has been identified as a cellular binding receptor for SARS-CoV-2, immunopathological changes in severe…</p></li>
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</ul>
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<h1 data-aos="fade-right" id="from-patent-search">From Patent Search</h1>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SARS-COV-2 BINDING PROTEINS</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU318004130">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Compositions and methods for detecting SARS-CoV-2 spike protein</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU317343760">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SELF-CLEANING AND GERM-KILLING REVOLVING PUBLIC TOILET FOR COVID 19</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU318003558">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Deep Learning Based System for the Detection of COVID-19 Infections</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU318003547">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>新冠病毒疫苗表达抗原蛋白的电化学发光免疫检测试剂盒</strong> - 本发明提供一种新冠病毒疫苗表达抗原蛋白的电化学发光免疫检测试剂盒，所述试剂盒至少包含：包被有链霉亲和素的孔板、生物素标记的抗新冠棘突蛋白抗体1、SULFO标记的抗新冠棘突蛋白抗体2、洗涤液、读数液、新冠病毒S蛋白标准品和新冠病毒RBD蛋白标准品。本发明以生物素标记的抗新冠棘突蛋白的抗体1与链霉亲和素板进行连接作为固定相，以新冠S蛋白、RBD蛋白作为参照品，可被SULFO标记的抗体2识别，从而检测新冠抗原的表达情况。该试剂盒能准确灵敏地定量检测不同基质中的新冠S蛋白、RBD蛋白，样品的前处理过程简单，耗时少，可同时检测大量样品。本发明对于大批量样品的新冠病毒疫苗表达抗原的检测具有重要意义。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN317672956">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>陶瓷复合涂料、杀毒陶瓷复合涂料及其制备方法和涂层</strong> - 本发明是关于一种陶瓷复合涂料、杀毒陶瓷复合涂料及其制备方法和涂层。该涂料包括30<sub>99.9%无机树脂、0.1</sub>70%氮化硅、0<sub>10%功能助剂、0</sub>18%无机颜料和0<sub>2%其他功能助剂；无机树脂由有机烷氧基硅烷、有机溶剂和硅溶胶混合、反应，抽醇，添加去离子水获得；有机烷氧基硅烷、有机溶剂和硅溶胶的质量比为1</sub>1.6：0.5~0.8：1。所要解决的技术问题是如何制备一种贮存稳定性好、可常温固化且膜层的物理化学性能优异的涂料；该涂料VOC含量低，具有良好的安全生产性，且涂料成膜过程中的VOC排放很低，利于环保；该膜层的硬度高、柔韧性好，不易开裂，且可以接触性杀灭病毒和细菌；该涂料既可常温固化，也可加热固化，无需现场两个剂型调配，施工方便，成本节约，从而更加适于实用。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN317672744">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SARS-CoV-2 antibodies</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU315792577">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>利用BLI技术检测新型冠状病毒中和性抗体的方法</strong> - 本发明提供一种利用BLI技术检测新型冠状病毒中和性抗体的方法，先将同一浓度的人ACE2蛋白捕获到生物传感器表面上，再将新型冠状病毒棘突蛋白RBD分别与不同浓度的待测中和性抗体预混，再将各混合液分别与捕获到生物传感器表面上的人ACE2蛋白接触，根据基于BLI技术的分子互作仪器检测到的干涉光谱的相对位移强度变化计算抑制率，绘制抑制曲线，计算IC50。本发明操作简单，快速高效，检测全过程无需包被和反复加样、洗板，15min内即可得到实验结果。检测反应在黑色孔板中进行，可实现大批量样品的新冠中和抗体的检测，与传统定性检测不同，通过计算IC50值，可以快速比较不同新冠中和性抗体的抑制能力。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN317346970">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SARS-CoV-2 antibodies</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU315792579">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>能够抑制冠状病毒Spike蛋白与ACE2相互作用的化合物的用途</strong> - 本发明公开了能够抑制冠状病毒Spike蛋白与ACE2相互作用的化合物的用途。结构如下，该类化合物在制备治疗和/或预防SARS‑CoV‑2新型冠状病毒感染的药物中的用途。同时，化合物不仅能够抑制冠状病毒Spike蛋白与ACE2蛋白的相互作用，IC50<1μM，同时能够促使Spike‑ACE2复合物的解离。在细胞水平上可以有效的抑制新型冠状病毒SARS‑CoV‑2假病毒入侵，IC50<2μM。所述化合物能特异性的结合在Spike蛋白的RBD区域，KD<6μM，表明该类化合物对于制备治疗和/或预防冠状病毒感染药物具有非常积极的作用。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN317346989">link</a></p></li>
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