Protein Kinase C-θ (PKC-θ) in Natural Killer Cell Function and Anti-Tumor Immunity. - Archive ouverte HAL Access content directly
Journal Articles Frontiers in Immunology Year : 2012

Protein Kinase C-θ (PKC-θ) in Natural Killer Cell Function and Anti-Tumor Immunity.

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Abstract

The protein kinase C-θ (PKCθ), which is essential for T cell function and survival, is also required for efficient anti-tumor immune surveillance. Natural killer (NK) cells, which express PKCθ, play a prominent role in this process, mainly by elimination of tumor cells with reduced or absent major histocompatibility complex class-I (MHC-I) expression. This justifies the increased interest of the use of activated NK cells in anti-tumor immunotherapy in the clinic. The in vivo development of MHC-I-deficient tumors is much favored in PKCθ(-/-) mice compared with wild-type mice. Recent data offer some clues on the mechanism that could explain the important role of PKCθ in NK cell-mediated anti-tumor immune surveillance: some studies show that PKCθ is implicated in signal transduction and anti-tumoral activity of NK cells elicited by interleukin (IL)-12 or IL-15, while others show that it is implicated in NK cell functional activation mediated by certain killer-activating receptors. Alternatively, the possibility that PKCθ is involved in NK cell degranulation is discussed, since recent data indicate that it is implicated in microtubule-organizing center polarization to the immune synapse in CD4(+) T cells. The implication of PKC isoforms in degranulation has been more extensively studied in cytotoxic T lymphocyte, and these studies will be also summarized.
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inserm-00726668 , version 1 (31-08-2012)

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Alberto Anel, Juan I. Aguiló, Elena Catalán, Johan Garaude, Moeez G. Rathore, et al.. Protein Kinase C-θ (PKC-θ) in Natural Killer Cell Function and Anti-Tumor Immunity.. Frontiers in Immunology, 2012, 3, pp.187. ⟨10.3389/fimmu.2012.00187⟩. ⟨inserm-00726668⟩
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