| Literature DB >> 11910108 |
Yun Shen1, Dejiang Zhou, Liyou Qiu, Xioamin Lai, Meredith Simon, Ling Shen, Zhongchen Kou, Qifan Wang, Liming Jiang, Jim Estep, Robert Hunt, Michelle Clagett, Prabhat K Sehgal, Yunyaun Li, Xuejun Zeng, Craig T Morita, Michael B Brenner, Norman L Letvin, Zheng W Chen.
Abstract
To examine the role of T cell receptor (TCR) in gammadelta T cells in adaptive immunity, a macaque model was used to follow Vgamma2Vdelta2+ T cell responses to mycobacterial infections. These phosphoantigen-specific gammadelta T cells displayed major expansion during Mycobacterium bovis Bacille Calmette-Guérin (BCG) infection and a clear memory-type response after BCG reinfection. Primary and recall expansions of Vgamma2Vdelta2+ T cells were also seen during Mycobacterium tuberculosis infection of naive and BCG-vaccinated macaques, respectively. This capacity to rapidly expand coincided with a clearance of BCG bacteremia and immunity to fatal tuberculosis in BCG-vaccinated macaques. Thus, Vgamma2Vdelta2+ T cells may contribute to adaptive immunity to mycobacterial infections.Entities:
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Year: 2002 PMID: 11910108 PMCID: PMC2872146 DOI: 10.1126/science.1068819
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728