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Kaposi's sarcoma-associated herpesvirus-encoded interleukin-6
1Medicine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
Journal of Hematotherapy & Stem Cell Research
|May 17, 2000
Summary
Karposi's sarcoma-associated herpesvirus (KSHV) utilizes viral IL-6 (vIL-6) to promote infected cell growth and survival. This viral protein may contribute to KSHV spread in humans.
Area of Science:
- Virology
- Immunology
- Oncology
Background:
- Karposi's sarcoma-associated herpesvirus (KSHV) research has advanced significantly since its 1994 discovery.
- KSHV exhibits molecular piracy, incorporating cellular genes into its genome.
- Viral IL-6 (vIL-6), a KSHV homolog of human IL-6, is a key example of this piracy.
Purpose of the Study:
- To investigate the role and functions of vIL-6 in KSHV biology.
- To understand how vIL-6 contributes to KSHV pathogenesis and survival.
Main Methods:
- In vitro studies on KSHV-infected cells.
- In vivo studies assessing vIL-6 functions.
- Analysis of vIL-6's effects on cell proliferation, hematopoiesis, and angiogenesis.
Main Results:
- vIL-6 stimulates the growth of KSHV-infected primary effusion lymphoma (PEL) cells.
- vIL-6 promotes hematopoiesis (blood cell formation).
- vIL-6 acts as an angiogenic factor by inducing vascular endothelial growth factor (VEGF).
Conclusions:
- vIL-6 possesses multiple properties that support KSHV survival and proliferation.
- These vIL-6 functions likely contribute to KSHV pathogenesis and its spread within the human population.