期刊
CURRENT MOLECULAR MEDICINE
卷 7, 期 7, 页码 658-673出版社
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/156652407782564345
关键词
gamma delta T cells; dendritic cells; innate immunity; immunotherapy
The knowledge of several signals influencing Dendritic Cell (DC) functions is crucial to manipulate the immune system for new vaccination therapies. Our recent findings provide a new model of intervention on DC system suggesting novel therapeutic implications. T, NK, and gamma delta T cell stimuli may enhance DC maturation, Th polarization and trigger the adaptive immune response. Regulatory effects of gamma delta T cells on inflammation and immune responses may be mediated by their interaction with DCs and they are analyzed in the last years in humans and mice. In humans, V gamma 9V delta 2 T cells represent the most part of circulating gamma delta T cells and are activated by non-peptidic molecules derived from different microorganisms or abnormal metabolic routes. They share both NK-like and effector/memory T cell features, and among these the possibility to interact with DCs. Coculture of immature DCs with activated V gamma 9V delta 2T cells allows DCs to acquire features of mature DCs complementing the migratory activity, up-regulating the chemokine receptors, and antigen presentation. Similarly to the NK-derived signals, DC activation is mostly mediated by soluble factors secreted by gamma delta T cells.
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