A man developed HIV-1 antibodies, which disappeared spontaneously. He had negative HIV viral load and p24 antigen tests and did not develop immunosuppression. Further investigations suggest the HIV-positive result was a nonspecific reaction. An alternative explanation is that he was exposed to HIV and had a "near-miss" HIV infection.
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http://dx.doi.org/10.1097/01.olq.0000258315.91807.70 | DOI Listing |
Curr HIV/AIDS Rep
November 2024
Department of Internal Medicine and Infectious Diseases, Radboud University Medical Center, Geert Grooteplein Zuid 8, 6525 GA, Nijmegen, The Netherlands.
Purpose Of Review: To review the role of innate immune cells in shaping the viral reservoir and maintenance of long-term viral control of spontaneous Elite and Viremic HIV controllers.
Recent Findings: HIV controllers exhibit a smaller and transcriptionally suppressed viral reservoir. Different studies report that early responses from innate cells play a pivotal role in this reservoir configuration.
Immunity
December 2024
Department of Medicine, Division of Infectious Diseases, Johns Hopkins University, Baltimore, MD 21205, USA. Electronic address:
Despite antiretroviral therapy (ART), HIV-1 persists in latently infected CD4 T cells, preventing a cure. Antigens drive the proliferation of infected cells, precluding latent reservoir decay. However, the relationship between antigen recognition and HIV-1 gene expression is poorly understood because most studies of latency reversal use agents that induce non-specific global T cell activation.
View Article and Find Full Text PDFJ Virol
December 2024
Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.
During the process by which human immunodeficiency virus (HIV-1) enters cells, the envelope glycoprotein (Env) trimer on the virion surface engages host cell receptors. Binding to the receptor CD4 induces Env to undergo transitions from a pretriggered, "closed" (State-1) conformation to more "open" (State 2/3) conformations. Most broadly neutralizing antibodies (bNAbs), which are difficult to elicit, recognize the pretriggered (State-1) conformation.
View Article and Find Full Text PDFACS Nano
October 2024
Virus Engineering Group, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Campus of the Universidad Autónoma de Madrid, Madrid 28049, Spain.
The mechanisms that underlie the spontaneous and faithful assembly of virus particles are guiding the design of self-assembling protein-based nanostructures for biomedical or nanotechnological uses. In this study, the human immunodeficiency virus (HIV-1) capsid was used as a model to investigate what molecular feature(s) may determine whether a protein nanoparticle with the intended architecture, instead of an aberrant particle, will be self-assembled . Attempts of using the HIV-1 capsid protein CA for achieving the self-assembly of cone-shaped nanoparticles that contain CA hexamers and pentamers, similar to authentic viral capsids, had typically yielded hexamer-only tubular particles.
View Article and Find Full Text PDFJCI Insight
September 2024
Infectious Diseases Department, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Elite controllers (ECs), a unique group of people with HIV (PWH), exhibit remarkable control of viral replication in the absence of antiretroviral therapy. In this study, we comprehensively characterized the NK cell repertoire in ECs after long-term viral control. Phenotypic profiling of NK cells revealed profound differences compared with other PWH, but marked similarities to uninfected individuals, with a distinctive prevalence of NKG2C+CD57+ memory-like NK cells.
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