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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Leveau, C. Herpers, B. Charneau, P. Jaleco, S. Kinet, S. Froger, D. Tiberghien, P. Steinberg, M. Noraz, N. Taylor, N. Ferrand, C. Dardalhon, V. |
| Description | Author Affiliation: Dardalhon V ( Institut de Génétique Moléculaire de Montpellier, UMR 5535/IFR 22, F34293 Montpellier, France.); |
| Abstract | Differences in the immunological reactivity of umbilical cord (UC) and adult peripheral blood (APB) T cells are poorly understood. Here, we show that IL-7, a cytokine involved in lymphoid homeostasis, has distinct regulatory effects on APB and UC lymphocytes. Neither naive nor memory APB CD4(+) cells proliferated in response to IL-7, whereas naive UC CD4(+) lymphocytes underwent multiple divisions. Nevertheless, both naive and memory IL-7-treated APB T cells progressed into the G(1b) phase of the cell cycle, albeit at higher levels in the latter subset. The IL-7-treated memory CD4(+) lymphocyte population was significantly more susceptible to infection with an HIV-1-derived vector than dividing CD4(+) UC lymphocytes. However, activation through the T cell receptor rendered UC lymphocytes fully susceptible to HIV-1-based vector infection. These data unveil differences between UC and APB CD4(+) T cells with regard to IL-7-mediated cell cycle progression and HIV-1-based vector infectivity. This evidence indicates that IL-7 differentially regulates lymphoid homeostasis in adults and neonates. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 16 |
| Volume Number | 98 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2001-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | CD4-Positive T-Lymphocytes Immunology Cell Cycle Physiology Genetic Vectors HIV-1 Genetics Interleukin-7 Cell Division Flow Cytometry T-Lymphocyte Subsets Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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