JMJD5 regulates PKM2 nuclear translocation and reprograms HIF-1α-mediated glucose metabolism

Hung Jung Wang, Ya Ju Hsieh, Wen Chi Cheng, Chun Pu Lin, Yu Shan Lin, So Fang Yang, Chung Ching Chen, Yoshihiro Izumiya, Jau Song Yu, Hsing Jien Kung, Wen Ching Wang

研究成果: 雜誌貢獻文章同行評審

189 引文 斯高帕斯(Scopus)

摘要

JMJD5, a Jumonji C domain-containing dioxygenase, is important for embryonic development and cancer growth. Here, we show that JMJD5 is up-regulated by hypoxia and is crucial for hypoxiainduced cell proliferation. JMJD5 interacts directly with pyruvate kinase muscle isozyme (PKM)2 to modulate metabolic flux in cancer cells. The JMJD5-PKM2 interaction resides at the intersubunit interface region of PKM2, which hinders PKM2 tetramerization and blocks pyruvate kinase activity. This interaction also influences translocation of PKM2 into the nucleus and promotes hypoxiainducible factor (HIF)-1α-mediated transactivation. JMJD5 knockdown inhibits the transcription of the PKM2-HIF-1α target genes involved in glucose metabolism, resulting in a reduction of glucose uptake and lactate secretion in cancer cells. JMJD5, along with PKM2 and HIF-1α, is recruited to the hypoxia response element site in the lactate dehydrogenase A and PKM2 loci and mediates the recruitment of the latter two proteins. Our data uncover a mechanism whereby PKM2 can be regulated by factor-binding- induced homo/heterooligomeric restructuring, paving the way to cell metabolic reprogram.
原文英語
頁(從 - 到)279-284
頁數6
期刊Proceedings of the National Academy of Sciences of the United States of America
111
發行號1
DOIs
出版狀態已發佈 - 1月 16 2014
對外發佈

ASJC Scopus subject areas

  • 多學科

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