Mutations in the PKM2 exon-10 region are associated with reduced allostery and increased nuclear translocation

Tsan Jan Chen, Hung Jung Wang, Jai Shin Liu, Hsin Hung Cheng, Sheng Chieh Hsu, Meng Chen Wu, Chien Hung Lu, Yu Fang Wu, Jing Wen Wu, Ying Yuan Liu, Hsing Jien Kung, Wen Ching Wang

研究成果: 雜誌貢獻文章

3 引文 斯高帕斯(Scopus)

摘要

PKM2 is a key metabolic enzyme central to glucose metabolism and energy expenditure. Multiple stimuli regulate PKM2’s activity through allosteric modulation and post-translational modifications. Furthermore, PKM2 can partner with KDM8, an oncogenic demethylase and enter the nucleus to serve as a HIF1α co-activator. Yet, the mechanistic basis of the exon-10 region in allosteric regulation and nuclear translocation remains unclear. Here, we determined the crystal structures and kinetic coupling constants of exon-10 tumor-related mutants (H391Y and R399E), showing altered structural plasticity and reduced allostery. Immunoprecipitation analysis revealed increased interaction with KDM8 for H391Y, R399E, and G415R. We also found a higher degree of HIF1α-mediated transactivation activity, particularly in the presence of KDM8. Furthermore, overexpression of PKM2 mutants significantly elevated cell growth and migration. Together, PKM2 exon-10 mutations lead to structure-allostery alterations and increased nuclear functions mediated by KDM8 in breast cancer cells. Targeting the PKM2-KDM8 complex may provide a potential therapeutic intervention.
原文英語
文章編號105
期刊Communications Biology
2
發行號1
DOIs
出版狀態已發佈 - 十二月 1 2019
對外發佈Yes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Medicine (miscellaneous)

指紋 深入研究「Mutations in the PKM2 exon-10 region are associated with reduced allostery and increased nuclear translocation」主題。共同形成了獨特的指紋。

引用此