Asymmetric Dimethylation of Ribosomal S6 Kinase 2 Regulates Its Cellular Localisation and Pro-Survival Function

Author:

Khalil Mahmoud I.12ORCID,Ismail Heba M.34ORCID,Panasyuk Ganna56ORCID,Bdzhola Anna7,Filonenko Valeriy7,Gout Ivan789ORCID,Pardo Olivier E.10

Affiliation:

1. Molecular Biology Unit, Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21568, Egypt

2. Department of Biological Sciences, Faculty of Science, Beirut Arab University, Beirut P.O. Box 11-5020, Lebanon

3. Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield S10 2TN, UK

4. Healthy Lifespan Institute (HELSI), University of Sheffield, Sheffield S10 2TN, UK

5. Institut Necker-Enfants Malades (INEM), 75015 Paris, France

6. INSERM U1151/CNRS UMR 8253, Université de Paris Cité, 75015 Paris, France

7. Department of Cell Signaling, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 03143 Kyiv, Ukraine

8. Department of Structural and Molecular Biology, University College London, London WC1E 6BT, UK

9. Institute of Healthy Ageing, University College London, London WC1E 6BT, UK

10. Division of Cancer, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London W12 0NN, UK

Abstract

Ribosomal S6 kinases (S6Ks) are critical regulators of cell growth, homeostasis, and survival, with dysregulation of these kinases found to be associated with various malignancies. While S6K1 has been extensively studied, S6K2 has been neglected despite its clear involvement in cancer progression. Protein arginine methylation is a widespread post-translational modification regulating many biological processes in mammalian cells. Here, we report that p54-S6K2 is asymmetrically dimethylated at Arg-475 and Arg-477, two residues conserved amongst mammalian S6K2s and several AT-hook-containing proteins. We demonstrate that this methylation event results from the association of S6K2 with the methyltransferases PRMT1, PRMT3, and PRMT6 in vitro and in vivo and leads to nuclear the localisation of S6K2 that is essential to the pro-survival effects of this kinase to starvation-induced cell death. Taken together, our findings highlight a novel post-translational modification regulating the function of p54-S6K2 that may be particularly relevant to cancer progression where general Arg-methylation is often elevated.

Funder

Association for International Cancer Research

Cancer Treatment and Research Trust

Publisher

MDPI AG

Subject

Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Computer Science Applications,Spectroscopy,Molecular Biology,General Medicine,Catalysis

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Growth or death? Control of cell destiny by mTOR and autophagy pathways;Progress in Biophysics and Molecular Biology;2023-12

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