Determination of mTOR complex influence in ribosomal protein transport under amino acid starvation condition

Authors

  • A. A. Zhylkibayev Евразийский национальный университет им Л.Н.Гумилева
        25 33

Keywords:

, ribosomal proteins, mTOR, sub-cellular fractionation.

Abstract

Synthesis of ribosomal proteins controlled by regulation of many processes in cells. Role of mTOR pathway in ribosomal protein transport is coordinating of nucleocytoplasmic transport which depends on nutrient availability. In our research we have detected low abundance of ribosomal proteins rpS3 and rpL26 in prenuclear and nuclear fraction of MEF cells. In addition, same decreasing level of ribosomal protein in Rictor null cells compared to control cells indicates that mTORC2 does not involve in ribosomal biogenesis. Character of decreasing of ribosomal protein in nuclear fraction by time points explained that this process is regulated by activity of mTOR protein kinase.

References

1 Rosner M, Schipany K, Hengstschlager M. Phosphorylation of nuclear and cytoplasmic pools of ribosomal protein S6 during cell cycle progression //Amino Acids. – 2013. – Vol.44. – P.1233–1240.

2 Mayer C, Grummt I. Ribosome biogenesis and cell growth: mTOR coordinates transcription by all three classes of nuclear RNA polymerases// Oncogene. – 2006.- Vol.25. – P. 6384-6391.

3 Guertin, D. A. and Sabatini, D. M. Defining the Role of mTOR in Cancer // Cancer Cell. – 2007. – Vol.12. – P. 9-22.

4 Sarbassov DD, Ali SM, Kim DH, Guertin DA, Latek RR, Erdjument-Bromage H, Tempst P, Sabatini DM. Rictor, a novel binding partner of mTOR, defines a rapamycininsensitive and raptorindependent
pathway that regulates the cytoskeleton // Curr. Biol. – 2004.– Vol. 14. – P. 12961302.

5 Shiota C, Woo JT, Lindner J, Shelton KD, Magnuson MA. Multiallelic disruption of the rictor gene in mice reveals that mTOR complex 2 is essential for fetal growth and viability // Dev. Cell. – 2006. – Vol. 11 – P.583-589.

6 Sarbassov DD, Ali SM, Sengupta S, et al. Prolonged rapamycin treatment inhibits mTORC2 assembly and Akt/PKB // Mol. Cell.-2006. – Vol.22. – P.159–168.

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How to Cite

Zhylkibayev, A. A. (2015). Determination of mTOR complex influence in ribosomal protein transport under amino acid starvation condition. Experimental Biology, 60(1), 31–33. Retrieved from https://bb.kaznu.kz/index.php/biology/article/view/50

Issue

Section

Bioinformatics, Genomics and Proteomics. Physical-chemical Biology