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Sun, Q. and Tripathi, V. and Yoon, J.H. and Singh, D.K. and Hao, Q. and Min, K.W. and Davila, S. and Zealy, R.W. and Li, X.L. and Polycarpou-Schwarz, M. and Lehrmann, E. and Zhang, Y. and Becker, K.G. and Freier, S.M. and Zhu, Y. and Diederichs, S. and Prasanth, S.G. and Lal, A. (2018) MIR100 host gene-encoded lncRNAs regulate cell cycle by modulating the interaction between HuR and its target mRNAs. Nucleic Acids Research, 46 (19). pp. 10405-10416.

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Long non-coding RNAs (lncRNAs) regulate vital biological processes, including cell proliferation, differentiation and development. A subclass of lncRNAs is synthesized from microRNA (miRNA) host genes (MIRHGs) due to pre-miRNA processing, and are categorized as miRNA-host gene lncRNAs (lnc-miRHGs). Presently, the cellular function of most lnc-miRHGs is not well understood. We demonstrate a miRNA-independent role for a nuclear-enriched lnc-miRHG in cell cycle progression. MIR100HG produces spliced and stable lncRNAs that display elevated levels during the G1 phase of the cell cycle. Depletion of MIR100HG-encoded lncRNAs in human cells results in aberrant cell cycle progression without altering the levels of miRNA encoded within MIR100HG. Notably, MIR100HG interacts with HuR/ELAVL1 as well as with several HuR-target mRNAs. Further, MIR100HG-depleted cells show reduced interaction between HuR and three of its target mRNAs, indicating that MIR100HG facilitates interaction between HuR and target mRNAs. Our studies have unearthed novel roles played by a MIRHG-encoded lncRNA in regulating RNA binding protein activity, thereby underscoring the importance of determining the function of several hundreds of lnc-miRHGs that are present in human genome.

Item Type: Article
Depositing User: Mr. Rameshwar Nema
Date Deposited: 14 Feb 2020 05:26
Last Modified: 14 Feb 2020 05:26
URI: http://nccs.sciencecentral.in/id/eprint/649

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