MicroRNA hsa-miR-657 promotes retinoblastoma malignancy by inhibiting peroxisome proliferator-activated receptor

Related Experiment Video

Updated: Sep 29, 2025

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
09:45

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells

Published on: May 21, 2019

8.5K

Xiumei He1, Yueyue Feng

  • 1Department of Ophthalmology, Wuchang Eyegood Ophthalmic Hospital, Wuhan, China.

Anti-Cancer Drugs
|March 24, 2022
PubMed

Insights

MicroRNA miR-657 is elevated in retinoblastoma, a rare eye cancer. It inhibits PPARA, promoting tumor growth and suggesting a new therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Retinoblastoma is a serious inherited eye cancer with poor outcomes.
  • Understanding molecular mechanisms is crucial for developing new treatments.

Purpose of the Study:

  • To investigate the relationship between microRNA miR-657 and peroxisome proliferator-activated receptor alpha (PPARA) in retinoblastoma.
  • To explore their roles in retinoblastoma progression and potential as therapeutic targets.

Main Methods:

  • Quantitative real-time PCR (RT-qPCR) to measure miR-657 and PPARA expression in tumor tissues and cells.
  • In vitro assays assessing cell proliferation, apoptosis, and migration in retinoblastoma cell lines.
  • In vivo xenograft experiments using nude mice to evaluate tumor development.

Main Results:

  • miR-657 expression was significantly higher, while PPARA expression was significantly lower in retinoblastoma.
  • PPARA knockdown accelerated retinoblastoma development.
  • miR-657 directly suppressed PPARA, enhancing retinoblastoma cell growth and tumorigenesis.

Conclusions:

  • miR-657 promotes retinoblastoma progression by inhibiting PPARA.
  • The miR-657-PPARA axis represents a potential therapeutic strategy for retinoblastoma.

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