期刊
TUBERCULOSIS
卷 87, 期 6, 页码 465-473出版社
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.tube.2007.07.001
关键词
tuberculosis; memory; CD4 T cell; interferon-gamma; IL-17; regulatory T cell
Efforts to develop a new, more effective vaccine for tuberculosis have been hampered by a lack of understanding of what constitutes a protective memory immune response. While interferon gamma production by CD4+ Tcells after vaccination is commonly used as a surrogate of protective memory immunity, its use in this regard appears to have little predictive value. We argue that this is due to the different requirements for interferon T-mediated protection in the primary response versus the memory recall response. In this review, we present evidence that suggests memory CD4+ Tcells can protect against tuberculosis in the absence of interferon gamma, and discuss potential mechanisms that may be involved such as IL-17 and regulatory T cells. A comprehensive understanding of the requirements for protective memory immunity to tuberculosis is essential for the development of an effective vaccine. (c) 2007 Elsevier Ltd. All rights reserved.
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