siRNA-mediated knockdown of aryl hydrocarbon receptor nuclear translocator 2 affects hypoxia-inducible factor-1 regulatory signaling and metabolism in human breast cancer cells

作者: Xian-Yang Qin , Feifei Wei , Jun Yoshinaga , Junzo Yonemoto , Masaru Tanokura

DOI: 10.1016/J.FEBSLET.2011.09.017

关键词:

摘要: Recent human studies found that the mRNA expression level of aryl-hydrocarbon receptor nuclear translocator 2 (ARNT2) was positively associated with prognosis breast cancer. In this study, we used small interfering RNA techniques to knockdown ARNT2 in MCF7 cancer cells, and an almost 40% downregulation increased sensitive apoptosis gene (3.36-fold), decreased von Hippel-Lindau (0.27-fold) matrix metalloproteinase-1 (0.35-fold). The metabolite analysis revealed contents glucose, glycine, betaine, phosphocholine, pyruvate lactate involved hypoxia-inducible factor (HIF)-1-dependent glycolytic pathway were significantly lower cells treated siARNT2. Our results suggested might play important role modulation HIF-1-regulated signaling metabolism.

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