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HIV-1 vaccine-induced C1 and V2 Env-specific antibodies synergize for increased antiviral activities
Pollara J. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): HIV-1 vaccine-induced C1 and V2 Env-specific antibodies synergize for increased antiviral activities
ผู้แต่ง / หัวหน้าโครงการ (EN): Pollara J.
บทคัดย่อ (EN): The RV144 ALVAC/AIDSVax HIV-1 vaccine clinical trial showed an estimated vaccine efficacy of 31.2%. Viral genetic analysis identified a vaccine-induced site of immune pressure in the HIV-1 envelope (Env) variable region 2 (V2) focused on residue 169, which is included in the epitope recognized by vaccinee-derived V2 monoclonal antibodies. The ALVAC/AIDSVax vaccine induced antibody-dependent cellular cytotoxicity (ADCC) against the Env V2 and constant 1 (C1) regions. In the presence of low IgA Env antibody levels, plasma levels of ADCC activity correlated with lower risk of infection. In this study, we demonstrate that C1 and V2 monoclonal antibodies isolated from RV144 vaccinees synergized for neutralization, infectious virus capture, and ADCC. Importantly, synergy increased the HIV-1 ADCC activity of V2 monoclonal antibody CH58 at concentrations similar to that observed in plasma of RV144 vaccinees. These findings raise the hypothesis that synergy among vaccine-induced antibodies with different epitope specificities contributes to HIV-1 antiviral antibody responses and is important to induce for reduction in the risk of HIV-1 transmission. © 2014, American Society for Microbiology.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904113226&doi=10.1128%2fJVI.00156-14&partnerID=40&md5=6d19d5570c791a647f0411fd4388040c
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Humans
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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HIV-1 vaccine-induced C1 and V2 Env-specific antibodies synergize for increased antiviral activities
Pollara J.
มหาวิทยาลัยมหิดล
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