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Germinal centre-driven maturation of B cell response to mRNA vaccination

Nature. 2022-02; 
Wooseob Kim, Julian Q Zhou, Stephen C Horvath, Aaron J Schmitz, Alexandria J Sturtz, Tingting Lei, Zhuoming Liu, Elizaveta Kalaidina, Mahima Thapa, Wafaa B Alsoussi, Alem Haile, Michael K Klebert, Teresa Suessen, Luis Parra-Rodriguez, Philip A Mudd, Sean P J Whelan, William D Middleton, Sharlene A Teefey, Iskra Pusic, Jane A O'Halloran, Rachel M Presti, Jackson S Turner, Ali H Ellebedy
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摘要

Germinal centres (GC) are lymphoid structures in which B cells acquire affinity-enhancing somatic hypermutations (SHM), with surviving clones differentiating into memory B cells (MBCs) and long-lived bone marrow plasma cells (BMPCs). SARS-CoV-2 mRNA vaccination induces a persistent GC response that lasts for at least six months in humans. The fate of responding GC B cells as well as the functional consequences of such persistence remain unknown. Here, we detected SARS-CoV-2 spike protein-specific MBCs in 42 individuals who had received two doses of the SARS-CoV-2 mRNA vaccine BNT162b2 six month earlier. Spike-specific IgG-secreting BMPCs were detected in 9 out of 11 participants. Using a combined approach of s... More

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