| Literature DB >> 17116296 |
Cathi Murphey1, Ashlesh K Murthy, Patricia A Meier, M Neal Guentzel, Guangming Zhong, Bernard P Arulanandam.
Abstract
We have previously determined the protective efficacy of intranasal vaccination with chlamydial protease-like activity factor (CPAF) against genital chlamydial infection. Since T-helper 1 (Th1) responses are important for anti-chlamydial immunity, we examined the contribution of CD4(+) T cells in CPAF mediated immunity against intravaginal (i.vag.) Chlamydia muridarum infection in C57BL/6 mice. CPAF+IL-12 vaccination induced antigen-specific CD4(+) T cells that secreted elevated levels of IFN-gamma, and generated strong humoral responses. The protective effects of CPAF vaccination against genital chlamydial challenge were abrogated by anti-CD4 neutralizing antibody treatment. Moreover, anti-chlamydial immunity could be adoptively transferred to naïve recipients using CPAF-specific CD4(+) T cells. Therefore, CPAF mediated anti-chlamydial immunity is highly dependent upon antigen-specific CD4(+) T cells.Entities:
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Year: 2006 PMID: 17116296 PMCID: PMC1885537 DOI: 10.1016/j.cellimm.2006.10.002
Source DB: PubMed Journal: Cell Immunol ISSN: 0008-8749 Impact factor: 4.868