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MYBL2 Is Targeted by miR-143-3p and Regulates Breast Cancer Cell Proliferation and Apoptosis

Jianli Chen1, Xiaowen Chen2

  • 1The Third Department of Medical Oncology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, P.R. China.

Oncology Research
|December 23, 2017
PubMed

Insights

MicroRNA-143-3p targets MYBL2, a gene implicated in breast cancer. Inhibiting MYBL2 or boosting miR-143-3p suppresses tumor cell growth and promotes cell death in breast cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Breast cancer is a significant global health concern.
  • The role of specific genes and microRNAs in breast cancer progression requires further elucidation.
  • MYBL2 (MYB proto-oncogene like 2) and miR-143-3p are implicated in cellular processes relevant to cancer.

Purpose of the Study:

  • To investigate the functional role of MYBL2 in breast cancer.
  • To explore the regulatory relationship between miR-143-3p and MYBL2.
  • To determine the impact of miR-143-3p and MYBL2 dysregulation on breast cancer cell proliferation and apoptosis.

Main Methods:

  • Analysis of gene and microRNA expression in breast cancer tissues and cells.
  • Validation of MYBL2 as a direct target of miR-143-3p.
  • Investigation of the effects of MYBL2 suppression and miR-143-3p overexpression on cancer cell behavior.

Main Results:

  • MYBL2 was found to be highly expressed, while miR-143-3p was lowly expressed in breast cancer.
  • MYBL2 was confirmed as a direct molecular target of miR-143-3p.
  • Suppression of MYBL2 mirrored the effects of miR-143-3p overexpression, inhibiting proliferation and inducing apoptosis in breast cancer cells.

Conclusions:

  • MYBL2 is a key regulator of breast cancer cell proliferation and apoptosis.
  • miR-143-3p exerts its tumor-suppressive effects in breast cancer, at least in part, by targeting MYBL2.
  • This miR-143-3p/MYBL2 axis represents a potential therapeutic target for breast cancer treatment.

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