ArticlePLoS pathogens2013
Interleukin-7 facilitates HIV-1 transmission to cervico-vaginal tissue ex vivo.
Article in PLoS pathogens, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
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Who cites it
41 citing papers in PubMed, 57 citations in OpenAlex.
- Cytokine Concentrations in Seminal Plasma and Blood in HIV Infection: Differential Modulation by Antiretroviral Therapy and Association with HIV RNA Levels and CD4International journal of general medicine · 2026Article
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- Female Genital Tract Host Factors and Tenofovir and Lamivudine Active Metabolites.The Journal of infectious diseases · 2024Article
- Highly Sensitive Analysis of Cervical Mucosal HIV-1 Infection Using Reporter Viruses Expressing Secreted Nanoluciferase.Methods in molecular biology (Clifton, N.J.) · 2024Article
- HIV-1 activates oxidative phosphorylation in infected CD4 T cells in a human tonsil explant model.Frontiers in immunology · 2023Article
- Translational Models to Predict Target Concentrations for Pre-Exposure Prophylaxis in Women.AIDS research and human retroviruses · 2022Review
- Article
- Semen: A modulator of female genital tract inflammation and a vector for HIV-1 transmission.American journal of reproductive immunology (New York, N.Y. : 1989) · 2021Review
- Leukocytospermia induces intraepithelial recruitment of dendritic cells and increases SIV replication in colorectal tissue explants.Communications biology · 2021Article
- HIV-1 subverts the complement system in semen to enhance viral transmission.Mucosal immunology · 2021Article
- Innate and Adaptive Anti-SIV Responses in Macaque Semen: Implications for Infectivity and Risk of Transmission.Frontiers in immunology · 2020Article
- Resident memory T cells are a cellular reservoir for HIV in the cervical mucosa.Nature communications · 2019Article
- Mucosal Susceptibility to Human Immunodeficiency Virus Infection in the Proliferative and Secretory Phases of the Menstrual Cycle.AIDS research and human retroviruses · 2019Article
- Negative and Positive Selection Pressure During Sexual Transmission of Transmitted Founder HIV-1.Frontiers in immunology · 2019Review
- Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture.Journal of visualized experiments : JoVE · 2018Article
- Extracellular vesicles generated by placental tissues ex vivo: A transport system for immune mediators and growth factors.American journal of reproductive immunology (New York, N.Y. : 1989) · 2018Article
- A Degraded Fragment of HIV-1 Gp120 in Rat Hepatocytes Forms Fibrils and Enhances HIV-1 Infection.Biophysical journal · 2017Article
- Potent Inhibition of HIV-1 Replication in Resting CD4 T Cells by Resveratrol and Pterostilbene.Antimicrobial agents and chemotherapy · 2017Article
- Seminal plasma induces inflammation and enhances HIV-1 replication in human cervical tissue explants.PLoS pathogens · 2017Article
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
Abstract
The majority of HIV-1 infections in women occur through vaginal intercourse, in which virus-containing semen is deposited on the cervico-vaginal mucosa. Semen is more than a mere carrier of HIV-1, since it contains many biological factors, in particular cytokines, that may affect HIV-1 transmission. The concentration of interleukin (IL)-7, one of the most prominent cytokines in semen of healthy individuals, is further increased in semen of HIV-1-infected men. Here, we investigated the potential role of IL-7 in HIV-1 vaginal transmission in an ex vivo system of human cervico-vaginal tissue. We simulated an in vivo situation by depositing HIV-1 on cervico-vaginal tissue in combination with IL-7 at concentrations comparable with those measured in semen of HIV-1-infected individuals. We found that IL-7 significantly enhanced virus replication in ex vivo infected cervico-vaginal tissue. Similarly, we observed an enhancement of HIV-1 replication in lymphoid tissue explants. Analysis of T cells isolated from infected tissues showed that IL-7 reduced CD4⁺ T cell depletion preventing apoptosis, as shown by the decrease in the number of cells expressing the apoptotic marker APO2.7 and the increase in the expression of the anti-apoptotic protein B-cell lymphoma (Bcl)-2. Also, IL-7 increased the fraction of cycling CD4⁺ T cells, as evidenced by staining for the nuclear factor Ki-67. High levels of seminal IL-7 in vivo may be relevant to the survival of the founder pool of HIV-1-infected cells in the cervico-vaginal mucosa at the initial stage of infection, promoting local expansion and dissemination of HIV infection.
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