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A segment of people with HIV on effective antiretroviral therapy (ART) continue to experience poor immune recovery, leaving them at heightened risk of non-AIDS-defining events (NAEs). The production of anti-CD4 IgG autoreactive antibodies is suggested as one contributing mechanism to these complications. Here, we found that plasma anti-CD4 levels do not discriminate immunological responders from nonresponders nor predict the occurrence of NAEs, suggesting it is unlikely a contributing immunopathological factor associated with these complications.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11731887 | PMC |
http://dx.doi.org/10.1097/QAD.0000000000004044 | DOI Listing |
Background: Anti-CD4 autoantibodies in people with HIV (PWH) receiving suppressive antiretroviral therapy (ART) appear to prevent CD4+ T cell reconstitution, yet the mechanisms underlying their production remain unclear. Emerging evidence implicates and its peptidoglycan (PGN) in autoimmunity.
Methods: Plasma from 32 ART-naive PWH, 53 ART-treated PWH, and 32 HIV- negative controls was analyzed for IgG autoantibodies and markers of translocation.
EBioMedicine
August 2025
Centre de Recherche du CHUM, Montréal, QC, Canada; Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC, Canada. Electronic address:
Background: While antiretroviral therapy (ART) efficiently suppresses viral replication, inflammation and immune dysfunction persist in some people living with HIV-1 (PLWH). HIV-1 soluble gp120 (sgp120) has been detected in PLWH plasma and its presence is linked to immune dysfunction. It was reported that sgp120 binding to CD4 on uninfected bystander CD4 T cells sensitises them to cellular death via antibody-dependent cellular cytotoxicity (ADCC) mediated by non-neutralising anti-cluster A antibodies (Abs) present in PLWH plasma.
View Article and Find Full Text PDFMol Med
June 2025
Department of Infectious Diseases, Xiangya Hospital Central South University, No. 87, Xiangya Road, Changsha City, 410008, Hunan Province, China.
Background: In persons living with HIV, antiretroviral therapy (ART) reduces HIV RNA in their plasma and increases CD4 + T lymphocytes, thus restoring their immune function and reducing mortality rates.
Methods: The heavy and light chains of B cell receptor (BCR) were amplified, sequenced, analyzed, and determined to be anti-CD4 mAb. The cytotoxicity of NK cells mediated by the anti-CD4 mAb was assessed using CCK-8, flow cytometry, ELISA, and western blotting.
AIDS
February 2025
Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY.
A segment of people with HIV on effective antiretroviral therapy (ART) continue to experience poor immune recovery, leaving them at heightened risk of non-AIDS-defining events (NAEs). The production of anti-CD4 IgG autoreactive antibodies is suggested as one contributing mechanism to these complications. Here, we found that plasma anti-CD4 levels do not discriminate immunological responders from nonresponders nor predict the occurrence of NAEs, suggesting it is unlikely a contributing immunopathological factor associated with these complications.
View Article and Find Full Text PDFNat Med
February 2025
Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA.
The clinical management of people with multidrug-resistant (MDR) human immunodeficiency virus (HIV) remains challenging despite continued development of antiretroviral agents. A 58-year-old male individual with MDR HIV and Kaposi sarcoma (KS) was treated with a new antiretroviral regimen consisting of anti-CD4 domain 1 antibody UB-421 and capsid inhibitor lenacapavir. The individual experienced delayed but sustained suppression of plasma viremia and a substantial increase in the CD4 T cell count.
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