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HIF-1α-mediated augmentation of miRNA-18b-5p facilitates proliferation and metastasis in osteosarcoma through

Peng Luo1, Yan-Dong Zhang2, Feng He1

  • 1Department of Orthopedics, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, 518000, China.

Scientific Reports
|June 21, 2022
PubMed

Insights

MicroRNA-18b-5p (miR-18b-5p) is elevated in osteosarcoma (OS), promoting tumor growth and metastasis. This study identifies miR-18b-5p as a potential prognostic biomarker and therapeutic target for OS.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • MicroRNAs (miRNAs) play a role in osteosarcoma (OS) development.
  • The specific function of microRNA-18b-5p (miR-18b-5p) in OS is not well understood.

Purpose of the Study:

  • To investigate the role and mechanism of miR-18b-5p in osteosarcoma.
  • To determine if miR-18b-5p can serve as a prognostic biomarker for OS.

Main Methods:

  • Analysis of GEO database and patient samples to assess miR-18b-5p expression.
  • In vitro and in vivo experiments to evaluate the effect of miR-18b-5p on OS cell proliferation and metastasis.
  • Mechanism exploration involving PHF2, HIF-1α, and hypoxia.

Main Results:

  • miR-18b-5p was significantly overexpressed in OS tissues and cell lines.
  • High miR-18b-5p levels correlated with poor OS prognosis.
  • miR-18b-5p promoted OS cell proliferation and metastasis.
  • miR-18b-5p targets PHF2 (a tumor suppressor) and is regulated by HIF-1α under hypoxia.
  • miR-18b-5p expression positively correlated with HIF-1α and negatively with PHF2 in patients.

Conclusions:

  • miR-18b-5p is a key driver in OS tumorigenesis and progression.
  • miR-18b-5p may serve as a valuable prognostic biomarker for osteosarcoma.
  • Targeting miR-18b-5p presents a potential therapeutic strategy for osteosarcoma treatment.

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