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Comparative Study
. 2014 Jun;20(2):307-15.
doi: 10.1016/j.intimp.2014.03.013. Epub 2014 Apr 2.

Cholecystokinin octapeptide regulates the differentiation and effector cytokine production of CD4(+) T cells in vitro

Jing-Ge Zhang  1 , Jun-Xu Liu  2 , Xian-Xian Jia  3 , Jing Geng  4 , Feng Yu  5 , Bin Cong  6
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Comparative Study

"V体育ios版" Cholecystokinin octapeptide regulates the differentiation and effector cytokine production of CD4(+) T cells in vitro

Jing-Ge Zhang et al. Int Immunopharmacol. 2014 Jun.

Abstract

Cholecystokinin octapeptide (CCK-8), an immunomodulatory peptide, can promote or suppress the development or function of specific CD4(+) T cell subsets by regulating antigen-presenting cell functions. In the current study, we investigated whether CCK-8 exerts a direct effect on T cells through influencing differentiation and cytokine production of distinct CD4(+) T cell subsets in vitro. Our results showed that CCK-8 differentially affects the development and function of CD4(+) T cell populations, with a negative influence on Th1 and Th17 cells and positive regulatory effect on inducible T regulatory cells (iTreg). Notably, CCK-8 suppressed Th1 while slightly enhancing Th2 development and cytokine production. Similarly, CCK-8 inhibited the differentiation of Th17 cells and promoted Foxp3 expression. L-364,718 and LY-288,513, selective antagonists of CCK1R and CCK2R, respectively, suppressed the effects of CCK-8 on CD4(+) T cell subset-specific transcription factors. Our findings strongly indicate that CCK-8 exerts a direct effect on T cells, which is dependent on CCKRs, particularly CCK2R VSports手机版. The collective results aid in further clarifying the mechanism underlying the anti-inflammatory and immunoregulatory effects of CCK-8. .

Keywords: Cholecystokinin; Signature cytokines; T helper cells; Transcription factors V体育安卓版. .

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