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Abstract Title:

A role for the mevalonate pathway in the induction of subtype cross-reactive immunity to influenza A virus by human gammadelta T lymphocytes.

Abstract Source:

Cell Immunol. 2010 ;264(1):71-7. Epub 2010 May 4. PMID: 20483407

Abstract Author(s):

Julie M Jameson, John Cruz, Anne Costanzo, Masanori Terajima, Francis A Ennis

Article Affiliation:

The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, CA 92037, USA. jamesonj@scripps.edu

Abstract:

The major gammadelta T cell subset in the human peripheral blood expresses the Vgamma9delta2 TCR and recognizes non-peptidic prenyl pyrophosphate antigens such as isopentylpyrophosphate (IPP). Upon activation the gammadelta T cells rapidly secrete antiviral cytokines similar to classical memory alphabeta T cells. Here we have investigated the ability of gammadelta T lymphocytes from human PBMC to become activated by influenza A virus infection. Vgamma9Vdelta2 T lymphocytes rapidly upregulate expression of CD25 and CD69 and produce IFN-gamma following influenza infection of PBMC. Moreover, the recognition is cross-reactive between various subtypes of influenza, but not with vaccinia virus. Vgamma9Vdelta2 T cell responses are potently reduced by the HMG-CoA reductase inhibitor mevastatin, which inhibits the mevalonate pathway and IPP synthesis. Our results indicate that influenza virus infection induces the rapid activation and function of Vgamma9Vdelta2 T lymphocytes in the peripheral blood via a mechanism that depends on the mevalonate pathway.

Study Type : In Vitro Study

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Sayer Ji
Founder of GreenMedInfo.com

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