ArticleJournal of acquired immune deficiency syndromes (1999)2015
Worldwide Genetic Features of HIV-1 Env α4β7 Binding Motif: The Local Dissemination Impact of the LDI Tripeptide.
Article in Journal of acquired immune deficiency syndromes (1999), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed, 6 citations in OpenAlex.
- Are the integrin binding motifs within SARS CoV-2 spike protein and MHC class II alleles playing the key role in COVID-19?Frontiers in immunology · 2023Article
- SARS-COV-2 and infectivity: Possible increase in infectivity associated to integrin motif expression.Journal of medical virology · 2020Article
- V2-Specific Antibodies in HIV-1 Vaccine Research and Natural Infection: Controllers or Surrogate Markers.Vaccines · 2019Review
- Cell-to-Cell Spread of HIV and Viral Pathogenesis.Advances in virus research · 2016Review
Corrections and comments
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Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
Abstract
backgroundHIV-1 gp120 binds to integrin α4β7, a homing receptor of lymphocytes to gut-associated lymphoid tissues. This interaction is mediated by the LDI/V tripeptide encoded in the V2-loop. This tripeptide mimics similar motifs in mucosal addressin cellular adhesion molecule (MAdCAM) and vascular CAM (VCAM), the natural ligands of α4β7. In this study, we explored the association of V2-loop LDI/V mimotopes with transmission routes and patterns of disease progression in HIV-infected adult and pediatric patients. HIV-1 env sequences available in the Los Alamos HIV Sequence database were included in the analyses.
methodsHIV-1 V2-loop sequences generated from infected adults and infants from South and Southeast Brazil, and also retrieved from the Los Alamos database, were assessed for α4β7 binding tripeptide composition. Chi-Square/Fisher Exact test and Mann Whitney U test were used for tripeptide comparisons. Shannon entropy was assessed for conservancy of the α4β7 tripeptide mimotope.
resultsWe observed no association between the tripeptide composition or conservation and virus transmission route or disease progression. However, LDI was linked to successful epidemic dissemination of HIV-1 subtype C in South America, and further to other expanding non-B subtypes in Europe and Asia. In Africa, subtypes showing increased LDV prevalence evidenced an ongoing process of selection toward LDI expansion, an observation also extended to subtype B in the Americas and Western Europe.
conclusionsThe V2-loop LDI mimotope was conserved in HIV-1C from South America and other expanding subtypes across the globe, which suggests that LDI may promote successful dissemination of HIV at local geographic levels by means of increased transmission fitness.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.