研究評估感染後長達8個月的SARS-CoV-2免疫記憶
作者:
小柯機器人發布時間:2021/1/8 16:31:02
美國拉霍亞免疫學研究所Shane Crotty等研究人員合作評估感染後長達8個月的SARS-CoV-2免疫記憶。該研究於2021年1月6日在線發表於國際一流學術期刊《科學》。
研究人員分析了188名COVID-19病例的254個樣本中多個針對SARS-CoV-2的循環免疫記憶,其中包括感染後6個月以上的43個樣本。突刺蛋白的IgG在6個多月內相對穩定。症狀發作後6個月,突刺特異性記憶B細胞比1個月時更為豐富。SARS-CoV-2特異性CD4+T細胞和CD8+T細胞下降,半衰期為3-5個月。
通過以整合方式研究針對SARS-CoV-2的抗體、記憶B細胞、CD4+T細胞和CD8+T細胞記憶,研究人員觀察到SARS-CoV-2免疫記憶的每個成分均表現出不同的動力學。
據悉,了解SARS-CoV-2的免疫記憶對於改善診斷和疫苗以及評估COVID-19大流行的未來可能進程至關重要。
附:英文原文
Title: Immunological memory to SARS-CoV-2 assessed for up to 8 months after infection
Author: Jennifer M. Dan, Jose Mateus, Yu Kato, Kathryn M. Hastie, Esther Dawen Yu, Caterina E. Faliti, Alba Grifoni, Sydney I. Ramirez, Sonya Haupt, April Frazier, Catherine Nakao, Vamseedhar Rayaprolu, Stephen A. Rawlings, Bjoern Peters, Florian Krammer, Viviana Simon, Erica Ollmann Saphire, Davey M. Smith, Daniela Weiskopf, Alessandro Sette, Shane Crotty
Issue&Volume: 2021/01/06
Abstract: Understanding immune memory to SARS-CoV-2 is critical for improving diagnostics and vaccines, and for assessing the likely future course of the COVID-19 pandemic. We analyzed multiple compartments of circulating immune memory to SARS-CoV-2 in 254 samples from 188 COVID-19 cases, including 43 samples at ≥ 6 months post-infection. IgG to the Spike protein was relatively stable over 6+ months. Spike-specific memory B cells were more abundant at 6 months than at 1 month post symptom onset. SARS-CoV-2-specific CD4+ T cells and CD8+ T cells declined with a half-life of 3-5 months. By studying antibody, memory B cell, CD4+ T cell, and CD8+ T cell memory to SARS-CoV-2 in an integrated manner, we observed that each component of SARS-CoV-2 immune memory exhibited distinct kinetics.
DOI: 10.1126/science.abf4063
Source: https://science.sciencemag.org/content/early/2021/01/05/science.abf4063
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037