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miR-181a-2 downregulates the E3 ubiquitin ligase CUL4A transcript and promotes cell proliferation.

MiR-181a-2 plays a major role in cell proliferation both positively and negatively depending on tissue type by targeting several regulators 3'UTR regions. We have predicted several targets for miR-181a-2 through computational approaches and characterized one its interesting target, CUL4A, an E3 ubiq...

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Published in:Medical Oncology Vol. 34; no. 8; pp. 1 - 8
Main Authors: Bandi, Venkateshwarlu, Baluchamy, Sudhakar
Format: pictorial research tables/charts Journal Article
Published: Springer Nature Aug2017
Online Access:View this record in EBSCOhost
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      dt: Aug2017
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      pub: Springer Nature
      place: New York, New York
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        10.1007/s12032-017-1006-2
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        atl: miR-181a-2 downregulates the E3 ubiquitin ligase CUL4A transcript and promotes cell proliferation.
      aug:
        au:
          Bandi, Venkateshwarlu
          Baluchamy, Sudhakar
        affil: Department of Biotechnology , Pondicherry Central University , R. V. Nagar, Kalapet Pondicherry 605014 India
      sug:
        subj:
          RNA
          Cell Physiology
          Biochemical Phenomena
          Epithelial Cells
          Cell Cycle
          Human
      ab: MiR-181a-2 plays a major role in cell proliferation both positively and negatively depending on tissue type by targeting several regulators 3'UTR regions. We have predicted several targets for miR-181a-2 through computational approaches and characterized one its interesting target, CUL4A, an E3 ubiquitin ligase. CUL4A regulates diverse functions in the cells including DNA repair, DNA replication, cell cycle, genomic stability through polyubiquitination of target proteins. Deregulation of both miR-181a-2 and CUL4A are reported in many cancerous cells, but the functional link between them is unknown. We show that miR-181a-5p binds to 3'UTR of CUL4A and regulates its transcripts levels in HEK293 cells through overexpression studies. In addition, by using MTT and Neutral red assays, we showed that miR-181a-2 overexpression increased the proliferation in HEK293 cells. Moreover, cell cycle analysis using flow cytometer revealed that an increase in S-phase cells upon the overexpression of miR-181a-2. Though several miRNAs are known to downregulate the CUL4A levels, here we show that miR-181a-2 also participates in the downregulation of CUL4A. Taken together, our data demonstrated that miR-181a-2 increases the cell proliferation in HEK293 cells possibly through the downregulation of CUL4A.
      pubtype: Academic Journal
      doctype:
        pictorial
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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