ライフサイエンス研究メディア

バイオマーケットjpはバイオ・ライフサイエンス研究に役立つ情報を発信するWebメディアです

Antibody-dependent cellular cytotoxicity response to SARS-CoV-2 in COVID-19 patients


Posted: 2021-09-25 19:00:00
Antibody-dependent cellular cytotoxicity (ADCC) responses to viral infection are a form of antibody regulated immune responses mediated through the Fc fragment. Whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) triggered ADCC responses contributes to COVID-19 disease development is currently not well understood. To understand the potential correlation between ADCC responses and COVID-19 disease development, we analyzed the ADCC activity and neutralizing antibody response in 255 individuals ranging from asymptomatic to fatal infections over 1 year post disease. ADCC was elicited by 10 days post-infection, peaked by 11-20 days, and remained detectable until 400 days post-infection. In general, patients with severe disease had higher ADCC activities. Notably, patients who had severe disease and recovered had higher ADCC activities than patients who had severe disease and deceased. Importantly, ADCC activities were mediated by a diversity of epitopes in SARS-COV-2-infected mice and induced to comparable levels against SARS-CoV-2 variants of concern (VOCs) (B.1.1.7, B.1.351, and P.1) as that against the D614G mutant in human patients and vaccinated mice. Our study indicates anti-SARS-CoV-2 ADCC as a major trait of COVID-19 patients with various conditions, which can be applied to estimate the extra-neutralization level against COVID-19, especially lethal COVID-19.

参考サイト PubMed: covid-19



バイオクイックニュース日本語版:COVID-19特集

バイオクイックニュース日本語版
9月 18, 2020 バイオアソシエイツ

COVID-19の病原性は、宿主MicroRNAの枯渇によるものという仮説が発表された

なぜ COVID-19 ウイルスは致命的であるのに、他の多くのコロナウイルスは無害で風邪をひくだけなのか? ポーランドとアメリカのアラバマ大学バーミンガム校(UAB)の研究チームがその答えを提案した。COVID-19ウイルスはマイクロRNAの「スポンジ」として機能するという。ポーランドのグダニスク医科大学の Rafal Bartoszewski 博士らによるこの仮説は、American Journal of Physiology-Lung Cellular and Molecular…

ゲスト 843人 と メンバー 3人 がオンラインです