Shikonin Suppresses Human T Lymphocyte Activation through Inhibition of IKK β Activity and JNK Phosphorylation.
Shikonin Suppresses Human T Lymphocyte Activation through Inhibition of IKK β Activity and JNK Phosphorylation.
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DOI:
10.1155/2013/379536
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Liu L
中科院分区:
文献类型:
--
作者:
Li T;Yan F;Wang R;Zhou H;Liu L
The key role of T cells has been elaborated in mediating immune responses and pathogenesis of human inflammatory and autoimmune conditions. In the current study the effect of shikonin, a compound isolated from a medicinal plant, on inhibition of T-cell activation was firstly examined by using primary human T lymphocytes isolated from buffy coat. Results showed that shikonin dose dependently suppressed T-cell proliferation, IL-2 and IFN-γ secretion, CD69 and CD25 expression, as well as cell cycle arrest activated by costimulation of PMA/ionomycin or OKT-3/CD28 monoclonal antibodies. Moreover, these inhibitory responses mediated by shikonin were found to be associated with suppression of the NF-κB signaling pathway via inhibition of the IKKα/β phosphorylation, IκB-α phosphorylation and degradation, and NF-κB nuclear translocation by directly decreasing IKKβ activity. Moreover, shikonin suppressed JNK phosphorylation in the MAPKs pathway of T cells. In this connection, we conclude that shikonin could suppress T lymphocyte activation through suppressing IKKβ activity and JNK signaling, which suggests that shikonin is valuable for further investigation as a potential immunosuppressive agent.
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DOI:
10.4049/jimmunol.182.1.171
发表时间:
2009-01-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Camargo JF;Quinones MP;Mummidi S;Srinivas S;Gaitan AA;Begum K;Jimenez F;VanCompernolle S;Unutmaz D;Ahuja SS;Ahuja SK
通讯作者:
Ahuja SK
影响因子:
3.6
作者:
Chiu, Shao-Chih;Yang, Ning-Sun
通讯作者:
Yang, Ning-Sun
影响因子:
7.3
作者:
Lee, Chen-Chen;Wang, Chien-Neng;Cheng, Yu-Wen
通讯作者:
Cheng, Yu-Wen
影响因子:
4
作者:
Chao, KH;Wu, MY;Ho, HN
通讯作者:
Ho, HN
影响因子:
7.3
作者:
Kuo, YC;Weng, SC;Tsai, WJ
通讯作者:
Tsai, WJ