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- W1605848467 abstract "The female genital tract is the main route for heterosexual transmission of HIV-1. Studies with SIV in macaque model indicate that after crossing the mucosa of cervix and vagina, SIV infected cells migrate to draining lymph nodes where the virus expands before it gets disseminated into the gut and other organs of the body. We have developed a combined organ culture system composed of cervical tissue together with tonsil tissue (surrogate lymphoid tissue for lymph node) to study HIV-1 transmission across the mucosal barrier and to evaluate the fate of HIV-1 and HIV-1 infected cells after crossing cervical mucosa and migrating to regional lymph nodes. To study the transmission of virus, a defined amount of pretitered cell-free or cell-associated HIV-1BAL or HIV-1IIIB was added to the top of the cervix tissue and incubated at 37°C in a CO2 incubator. The top well was removed after 3-4 days and tonsil tissue or tonsil mononuclear cells in the bottom well were cultured for an additional 12 days. Replication of cell-free and cell-associated HIV-1BAL and HIV-1IIIB in tonsillar cells after crossing the cervix mucosa was confirmed by the presence of HIV-1 p24 in culture supernatant, the detection of HIV-1 DNA by real-time PCR, presence of p24 antigen by immunofluorescence assay and presence of HIV-1 RNA by simultaneous immunophenotyping and ultrasensitive fluorescence in situ hybridization. We have also characterized by immunofluorescence assay HIV-1 infected migratory cells exiting from the cervix tissue. CD4+ (T cells), CD11c+ (dendritic cells) and CD68+ (macrophages) cells were found to migrate from cervix tissue and were positive for HIV-1. The public health relevance of this model is that we may use the combined cervix and tonsil tissue/cell model to determine the mechanism of sexual transmission of HIV-1 in women at the cellular and molecular level and to evaluate anti-HIV microbicides." @default.
- W1605848467 created "2016-06-24" @default.
- W1605848467 creator A5083176586 @default.
- W1605848467 date "2008-09-28" @default.
- W1605848467 modified "2023-09-27" @default.
- W1605848467 title "STUDY OF HIV-1 TRANSMISSION ACROSS HUMAN CERVICAL TISSUE TO THE LYMPHOID TISSUE USING AN ORGAN CULTURE MODEL" @default.
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- W1605848467 hasPublicationYear "2008" @default.
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