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miR-145 downregulates the expression of cyclin-dependent kinase 6 in human cervical carcinoma cells

Jing Zhang1, Lu Wang1, Baoli Li1

  • 1Department of Clinical Medicine, Medical College of Yan'an University, Yan'an, Shaanxi 716000, P.R. China.

Experimental and Therapeutic Medicine
|July 11, 2014
PubMed

Insights

MicroRNA-145 (miR-145) inhibits human cervical carcinoma cell proliferation by suppressing cyclin-dependent protein kinase 6 (CDK6) expression. Overexpression of miR-145 reduces CDK6 levels and hinders cancer cell growth.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • Cervical carcinoma is a significant global health concern.
  • MicroRNAs play crucial roles in cancer development and progression.
  • Cyclin-dependent protein kinase 6 (CDK6) is implicated in cell cycle regulation and cancer proliferation.

Purpose of the Study:

  • To investigate the effect of miR-145 on CDK6 expression.
  • To determine the impact of miR-145 on human cervical carcinoma cell proliferation.
  • To explore the potential of miR-145 as a therapeutic target.

Main Methods:

  • Construction of a recombinant plasmid (pcDNA6.2-GW-miR-145) for miR-145 overexpression.
  • Transfection of HeLa cells with the recombinant plasmid.
  • Quantitative polymerase chain reaction (qPCR) to measure miR-145 and CDK6 transcription levels.
  • Western blot analysis to assess CDK6 protein expression.
  • MTT assay to evaluate cell proliferation.

Main Results:

  • Successful construction and transfection of the miR-145 recombinant plasmid.
  • Significantly increased miR-145 expression in transfected HeLa cells.
  • Significantly decreased CDK6 expression (both mRNA and protein) in miR-145 overexpressing cells.
  • Inhibition of HeLa cell proliferation following miR-145 overexpression.

Conclusions:

  • miR-145 overexpression effectively suppresses CDK6 expression in human cervical carcinoma cells.
  • miR-145 demonstrates an inhibitory effect on the proliferative capacity of HeLa cells.
  • These findings suggest that miR-145 may serve as a potential therapeutic agent for cervical cancer.
Keywords:
cervical carcinomacyclin-dependent kinase 6eukaryotic expression vectormiRNA-145

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