Vaccine genetics of IGHV1-2 VRC01-class broadly neutralizing antibody precursor naïve human B cells.

Vaccine genetics of IGHV1-2 VRC01-class broadly neutralizing antibody precursor naïve human B cells.
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DOI:
10.1038/s41541-021-00376-7
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发表时间:
2021-09-06
期刊:
影响因子:
9.2
通讯作者:
Crotty S
Crotty S
中科院分区:
医学1区
文献类型:
--
作者:
Lee JH;Toy L;Kos JT;Safonova Y;Schief WR;Havenar-Daughton C;Watson CT;Crotty S

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A successful HIV vaccine eliciting broadly neutralizing antibodies (bnAbs) must overcome the hurdle of being able to activate naive precursor B cells encoding features within their germline B cell receptors (BCR) that allow recognition of broadly neutralizing epitopes. Knowledge of whether bnAb precursor B cells are circulating at sufficient frequencies within individuals in communities heavily impacted by HIV may be important. Using a germline-targeting eOD-GT8 immunogen and high-throughput droplet-based single-cell BCR sequencing, we demonstrate that large numbers of paired BCR sequences from multiple donors can be efficiently screened to elucidate precursor frequencies of rare, naive VRC01-class B cells. Further, we analyzed IGHV1-2 allelic usage among three different cohorts; we find that IGHV1-2 alleles traditionally thought to be incompatible with VRC01-class responses are relatively common in various human populations and that germline variation within IGHV1-2 associates with gene usage frequencies in the naive BCR repertoire.
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