Cell Reports (Jul 2023)

HIV-1 neutralizing antibodies elicited in humans by a prefusion-stabilized envelope trimer form a reproducible class targeting fusion peptide

  • Shuishu Wang,
  • Flavio Matassoli,
  • Baoshan Zhang,
  • Tracy Liu,
  • Chen-Hsiang Shen,
  • Tatsiana Bylund,
  • Timothy Johnston,
  • Amy R. Henry,
  • I-Ting Teng,
  • Prabhanshu Tripathi,
  • Jordan E. Becker,
  • Anita Changela,
  • Ridhi Chaudhary,
  • Cheng Cheng,
  • Martin Gaudinski,
  • Jason Gorman,
  • Darcy R. Harris,
  • Myungjin Lee,
  • Nicholas C. Morano,
  • Laura Novik,
  • Sijy O’Dell,
  • Adam S. Olia,
  • Danealle K. Parchment,
  • Reda Rawi,
  • Jesmine Roberts-Torres,
  • Tyler Stephens,
  • Yaroslav Tsybovsky,
  • Danyi Wang,
  • David J. Van Wazer,
  • Tongqing Zhou,
  • Nicole A. Doria-Rose,
  • Richard A. Koup,
  • Lawrence Shapiro,
  • Daniel C. Douek,
  • Adrian B. McDermott,
  • Peter D. Kwong

Journal volume & issue
Vol. 42, no. 7
p. 112755

Abstract

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Summary: Elicitation of antibodies that neutralize the tier-2 neutralization-resistant isolates that typify HIV-1 transmission has been a long-sought goal. Success with prefusion-stabilized envelope trimers eliciting autologous neutralizing antibodies has been reported in multiple vaccine-test species, though not in humans. To investigate elicitation of HIV-1 neutralizing antibodies in humans, here, we analyze B cells from a phase I clinical trial of the “DS-SOSIP”-stabilized envelope trimer from strain BG505, identifying two antibodies, N751-2C06.01 and N751-2C09.01 (named for donor-lineage.clone), that neutralize the autologous tier-2 strain, BG505. Though derived from distinct lineages, these antibodies form a reproducible antibody class that targets the HIV-1 fusion peptide. Both antibodies are highly strain specific, which we attribute to their partial recognition of a BG505-specific glycan hole and to their binding requirements for a few BG505-specific residues. Prefusion-stabilized envelope trimers can thus elicit autologous tier-2 neutralizing antibodies in humans, with initially identified neutralizing antibodies recognizing the fusion-peptide site of vulnerability.

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