Broad HIV-1 neutralization mediated by CD4-binding site antibodies.

Li, Yuxing; Migueles, Stephen A; Welcher, Brent; Svehla, Krisha; Phogat, Adhuna; Louder, Mark K; Wu, Xueling; Shaw, George M et al. · Nat Med · 2007

basic_science · Level V

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Abstract

We have identified several patient sera showing potent and broad HIV-1 neutralization. Using antibody adsorption and elution from selected gp120 variants, the neutralizing specificities of the two most broadly reactive sera were mapped to the primary receptor CD4-binding region of HIV-1 gp120. Novel antibodies to the CD4-binding site are elicited in some HIV-1-infected individuals, and new approaches to present this conserved region of gp120 to the immune system may result in improved vaccine immunogens.

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