Broad and potent neutralizing antibodies from an African donor reveal a new HIV-1 vaccine target.
Broad and potent neutralizing antibodies from an African donor reveal a new HIV-1 vaccine target.
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DOI:
10.1126/science.1178746
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发表时间:
2009-10-09
期刊:
影响因子:
--
通讯作者:
Burton DR
中科院分区:
文献类型:
--
作者:
Walker LM;Phogat SK;Chan-Hui PY;Wagner D;Phung P;Goss JL;Wrin T;Simek MD;Fling S;Mitcham JL;Lehrman JK;Priddy FH;Olsen OA;Frey SM;Hammond PW;Protocol G Principal Investigators;Kaminsky S;Zamb T;Moyle M;Koff WC;Poignard P;Burton DR
Broadly neutralizing antibodies (bNAbs), which develop over time in some HIV-1 infected individuals, define critical epitopes for HIV vaccine design. Using a systematic approach, we have examined neutralization breadth in the sera of about 1,800 HIV-1 infected individuals, primarily infected with non-clade B viruses, and selected donors for monoclonal antibody (mAb) generation. We then used a high-throughput neutralization screen of antibody-containing culture supernatants from approximately 30,000 activated memory B cells from a clade A-infected African donor to isolate two potent mAbs that target a broadly neutralizing epitope. The previously undescribed epitope is preferentially expressed on trimeric Envelope protein and spans conserved regions of variable loops of the gp120 subunit. The results provide a framework for the design of new vaccine candidates for the elicitation of bNAb responses.
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