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Abstract Title:

[Astaxanthin inhibits proliferation and promotes apoptosis of A549 lung cancer cells via blocking JAK1/STAT3 pathway].

Abstract Source:

Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2016 Jun ;32(6):784-8. PMID: 27371847

Abstract Author(s):

Chuntao Wu, Jinji Zhang, Tienan Liu, Guimei Jiao, Changzai Li, Baoshan Hu

Article Affiliation:

Chuntao Wu

Abstract:

Objective To investigate the anti-tumor effects of astaxanthin on A549 lung cancer cells and the related mechanisms. Methods A549 cells were cultured with various concentrations of astaxanthin (20, 40, 60, 80, 100μmol/L), and DMSO at the same concentrations served as vehicle controls. The viability of A549 cells was detected by CCK-8 assay; cell cycle and apoptosis were observed by flow cytometry; and the expressions of B-cell lymphoma-2 (Bcl-2), Bcl-2 associated X protein (Bax), signal transducers and activators of transcription 3 (STAT3), and Janus kinase 1 (JAK1) were evaluated by Western blotting. Results CCK-8 assay showed that astaxanthin decreased the proliferation of A549 cells in a dose-dependent manner. Flow cytometry showed that astaxanthin increased the number of cells in the G0/G1 phase and induced apoptosis in A549 cells. Western blotting showed that astaxanthin up-regulated the expression of Bax and down-regulated the expressions of Bcl-2, STAT3 and JAK1. Conclusion Astaxanthin functions as a potent inhibitor of A549 lung cancer cell growth by targeting JAK1/STAT3 signaling pathway.

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Sayer Ji
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