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MicroRNA-124 suppresses breast cancer cell growth and motility by targeting CD151

Zhi-Bo Han1, Zhouxin Yang, Ying Chi

  • 1State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 288 Nan Jing Road, Tianjin, P. R. China.

Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology
|July 3, 2013
PubMed
Abstract

Insights

MicroRNA-124 (miR-124) directly targets CD151, inhibiting breast cancer cell proliferation and motility. This finding suggests miR-124 as a potential therapeutic target for reducing breast cancer invasion and metastasis.

Area of Science:

  • Molecular Biology
  • Oncology
  • Gene Regulation

Background:

  • CD151 is highly expressed in breast cancer, promoting cell growth and motility.
  • Understanding CD151 regulation, particularly through post-translational mechanisms like microRNAs, is crucial for elucidating its role in breast cancer progression.

Purpose of the Study:

  • To investigate the regulatory role of microRNA-124 (miR-124) on CD151 expression in breast cancer.
  • To determine the functional impact of the miR-124/CD151 interaction on breast cancer cell behavior.

Main Methods:

  • Luciferase reporter assays to confirm direct targeting of CD151 by miR-124.
  • Real-time PCR, western blot, and flow cytometry to quantify CD151 mRNA and protein levels.
  • Assessment of miR-124 effects on breast cancer cell proliferation, apoptosis, cell cycle, and motility.

Main Results:

  • miR-124 directly targets the 3'-UTR of CD151 mRNA, suppressing its expression and translation.
  • Both CD151 siRNA and miR-124 mimics significantly inhibited breast cancer cell proliferation by inducing cell cycle arrest.
  • miR-124 mimics markedly reduced the motility of breast cancer cells without inducing apoptosis.

Conclusions:

  • miR-124 plays a significant role in suppressing the invasive and metastatic potential of breast cancer cells by directly targeting CD151.
  • These findings highlight miR-124 as a key regulator of breast cancer cell invasion and metastasis, suggesting its potential as a therapeutic agent.

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