dr.gennady писал(а) 25 ноя 2020, 12:08:Кроме того, мутировавший вирус способен
подавлять моноклональные антитела
Очень меня заинтересовало как это вирус может «подавлять» моноклинальные антитела.
Посмотрел оригинальную статью.
“We observed that the N439K mutation resulted in immune
escape from a panel of neutralizing monoclonal antibodies”
Никаких открытий на уровне Нобелевской премии я там не нашёл. Мутация приводит к тому, что вирус
in vitro, в клеточной культуре, не нейтрализуется панелью моноклинальных антител, полученной против исходного штамма. Избегает, уклоняется, но никак не подавляет. Более важно, что этот мутант не нейтрализуется и полигональными антителами.
“The N439K variant
evades antibody-mediated immunity Having established that virus carrying the N439K mutation is fit, we sought to understand whether this mutation
evades antibody-mediated immunity by evaluating recognition of the N439K variant by monoclonal antibodies and by polyclonal immune serum from 445 recovered individuals, including 6 donors who were infected by the SARS-CoV-2 N439K variant. 7.4% of the tested sera showed a greater than 2-fold reduction in binding to N439K RBD as compared to WT RBD (Figures 5A-B and S3).
Действительно не очень хорошая и очень важная научная новость. Недаром число авторов в статье просто зашкаливает.
Emma C. Thomson1,2*, Laura E. Rosen3*, James G. Shepherd1*, Roberto Spreafico3*, Ana da Silva Filipe1, Jason A. Wojcechowskyj3, Chris Davis1, Luca Piccoli4, David J. Pascall5, Josh Dillen3, Spyros Lytras1, Nadine Czudnochowski3, Rajiv Shah1, Marcel Meury3, Natasha Jesudason1, Anna De Marco4, Kathy Li1, Jessica Bassi4, Aine O’Toole6, Dora Pinto4, Rachel M. Colquhoun6, Katja Culap4, Ben Jackson6, Fabrizia Zatta4, Andrew Rambaut6, Stefano Jaconi4, Vattipally B. Sreenu1, Jay Nix7, Ruth F. Jarrett1, Martina Beltramello4, Kyriaki Nomikou1, Matteo Pizzuto4, Lily Tong1, Elisabetta Cameroni4, Natasha Johnson1, Arthur Wickenhagen1, Alessandro Ceschi8,9,10, Daniel Mair1, Paolo Ferrari11,12, Katherine Smollett1, Federica Sallusto13, Stephen Carmichael1, Christian Garzoni14, Jenna Nichols1, Massimo Galli15, Joseph Hughes1, Agostino Riva15, Antonia Ho1, Malcolm G. Semple16,17, Peter J.M. Openshaw18, J. Kenneth Baillie19,20, The ISARIC4C Investigators21, the COVID-19 Genomics UK (COG-UK) consortium22, Suzannah J. Rihn1, Samantha J. Lycett19, Herbert W. Virgin3,23, Amalio Telenti3, Davide Corti4, David L. Robertson1, and Gyorgy Snell3
1MRC-University of Glasgow Centre for Virus Research, University of Glasgow, Glasgow, G61 1QH, UK
2Department of Clinical Research, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
3Vir Biotechnology, San Francisco, California 94158, USA
4Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland.
5Institute of Biodiversity, Animal Health and Comparative Medicine, Boyd Orr Centre for Population and Ecosystem Health, University of Glasgow, Glasgow, G61 1QH, UK
6Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK
7Molecular Biology Consortium, Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
8Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland.
9Division of Clinical Pharmacology and Toxicology, Institute of Pharmacological Sciences of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
10Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Zurich, Switzerland
11Department of Nephrology, Ospedale Civico Lugano, Ente Ospedaliero Cantonale, Lugano, Switzerland
12Prince of Wales Hospital Clinical School, University of New South Wales, Sydney, Australia 13Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland 14Clinic of Internal Medicine and Infectious Diseases, Clinica Luganese Moncucco, 6900 Lugano, Switzerland
15III Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
16NIHR Health Protection Research Unit, Institute of Infection, Veterinary and Ecological Sciences, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK
17Respiratory Medicine, Alder Hey Children’s Hospital, Institute in The Park, University of Liverpool, Alder Hey Children’s Hospital, Liverpool L12 2AP, UK
18National Heart and Lung Institute, Imperial College London, London, UK
19The Roslin Institute, University of Edinburgh, EH25 9RG Edinburgh, UK
Небо падает на землю? Да нет. Это обычное дело, например, для вируса гриппа. Правда сейчас у гриппа процент тяжёлой формы течения болезни, осложнений и смертности намного ниже. С другой стороны, с испанкой в 1918 году было намного хуже.