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Glutamine synthetase licenses APC/C-mediated mitotic progression to drive cell growth

JS. Zhao, S. Shi, HY. Qu, Z. Keckesova, ZJ. Cao, LX. Yang, X. Yu, L. Feng, Z. Shi, J. Krakowiak, RY. Mao, YT. Shen, YM. Fan, TM. Fu, C. Ye, D. Xu, X. Gao, J. You, W. Li, T. Liang, Z. Lu, YX. Feng

. 2022 ; 4 (2) : 239-253. [pub] 20220210

Jazyk angličtina Země Německo

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc22019446

Tumors can reprogram the functions of metabolic enzymes to fuel malignant growth; however, beyond their conventional functions, key metabolic enzymes have not been found to directly govern cell mitosis. Here, we report that glutamine synthetase (GS) promotes cell proliferation by licensing mitotic progression independently of its metabolic function. GS depletion, but not impairment of its enzymatic activity, results in mitotic arrest and multinucleation across multiple lung and liver cancer cell lines, patient-derived organoids and xenografted tumors. Mechanistically, GS directly interacts with the nuclear pore protein NUP88 to prevent its binding to CDC20. Such interaction licenses activation of the CDC20-mediated anaphase-promoting complex or cyclosome to ensure proper metaphase-to-anaphase transition. In addition, GS is overexpressed in human non-small cell lung cancer and its depletion reduces tumor growth in mice and increases the efficacy of microtubule-targeted chemotherapy. Our findings highlight a moonlighting function of GS in governing mitosis and illustrate how an essential metabolic enzyme promotes cell proliferation and tumor development, beyond its main metabolic function.

Citace poskytuje Crossref.org

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