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Updated: Sep 27, 2025

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
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LINC00488 Induces Tumorigenicity in Retinoblastoma by Regulating microRNA-30a-5p/EPHB2 Axis

Xuehao Cui1, Tingyi Liang2, Xunda Ji2

  • 1Department of Ophthalmology, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision ScienceEye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjing, China.

Ocular Immunology and Inflammation
|April 11, 2022
PubMed
Abstract

Insights

Long non-coding RNA LINC00488 promotes retinoblastoma (RB) growth by interacting with miR-30a-5p to regulate EPHB2. This study reveals a novel lncRNA-miRNA-mRNA axis for potential RB therapeutic strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Long non-coding RNAs (lncRNAs) play crucial roles in tumorigenesis.
  • LINC00488 has been implicated in the progression of various cancers.
  • The specific role of LINC00488 in retinoblastoma (RB) remains largely unexplored.

Purpose of the Study:

  • To elucidate the LINC00488-mediated molecular network in retinoblastoma.
  • To investigate the functional role of LINC00488 in RB development.
  • To identify potential therapeutic targets within this network.

Main Methods:

  • Assessed LINC00488 expression in RB tissues and cells.
  • Utilized siRNA for LINC00488 knockdown and miR-30a-5p mimics in Y79 RB cells.
  • Verified the interactions between LINC00488, miR-30a-5p, and EPHB2.
  • Evaluated the functional impact in vitro and in vivo.

Main Results:

  • LINC00488 expression was elevated in RB tissues and cells.
  • Knockdown of LINC00488 or upregulation of miR-30a-5p suppressed RB cell proliferation and malignancy.
  • LINC00488 acts as a competing endogenous RNA (ceRNA) by sponging miR-30a-5p.
  • miR-30a-5p directly targets EPHB2, and EPHB2 overexpression reversed the inhibitory effects of miR-30a-5p.

Conclusions:

  • LINC00488 promotes retinoblastoma tumorigenicity through the LINC00488/miR-30a-5p/EPHB2 axis.
  • This regulatory network offers a potential new therapeutic avenue for retinoblastoma treatment.
Keywords:
Eph receptor B2LINC00488microRNA-30a-5pmigrationproliferationretinoblastomatumorigenicity

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