PMID: 26884975Feb 18, 2016Paper

Allicin inhibits human renal clear cell carcinoma progression via suppressing HIF pathway

International Journal of Clinical and Experimental Medicine
Bin SongPing Fu

Abstract

Hypoxia-inducible factor 1-alpha (HIF-1α) protects hypoxic cells from apoptosis or necrosis under ischemic and anoxic conditions. Allicin is characterized by the anti-cancer characteristics. This study aims to explore whether allicin is involved in renal clear cell carcinoma progression through HIF-1α. A total of 40 RCC tissues and 39 normal renal tissues were collected H&E and immunohistochemistry were applied to study morphology changes. MTT assay and flow cytometry (FCM) were used to analyze cell viability and apoptosis. In vitro colony formation assay and wound healing assay were conducted to explore cell migration. The protein levels of Bcl-2, VEGF and HIF-1α were increased in RCC tissues. More importantly, treatment with allicin significantly decreased HIF-1α protein level, thereby reducing Bcl-2 and VEGF expression. In addition, allicin also obviously enhanced apoptotic cells. And colony formation capacity and cell migration rate were reduced in RCC-9863 cells treated with allicin. Further study revealed that overexpression of HIF-1α could partially repress allicin-induced downstream effects. To conclude, allicin inhibits human renal clear cell carcinoma progression partially by suppressing HIF pathway.

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