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Updated: Mar 26, 2026
Reconstruct Human Retinoblastoma In Vitro
Published on: October 11, 2022
MiR-145 suppressed human retinoblastoma cell proliferation and invasion by targeting ADAM19
Zhe Sun1, Ai Zhang2, Tao Jiang3
1School of Medicine, Tongji UniversityShanghai 200092, China; Department of Ophthalmology, The Affiliated Hospital of Qingdao UniversityQingdao 266000, China.
Abstract:
MicroRNAs (miRNAs) play critical roles in retinoblastoma (RB) initiation and progression, aberrant expression of miR-145 had been frequently reported in cancer studies. However, the role and mechanism of its function in RB is still unclear. In this study, our data showed that miR-145 was downregulated in RB tissues and cell lines. Overexpression of miR-145 suppressed RB cell proliferation, migration and invasion in vitro. ADAM19 was identified as a direct target of miR-145. Silencing of ADAM19 significantly inhibited RB cell proliferation, migration and invasion. In addition, a reverse correlation between miR-145 and ADAM19 expression was noted in RB tissues. Taken together, these findings suggested that miR-145 functions as a tumor suppressor in RB by directly targeting ADAM19. miR-145 could be an anticancer therapeutic target for RB patients.
Insights
MicroRNA-145 (miR-145) acts as a tumor suppressor in retinoblastoma by inhibiting cell growth and spread. This microRNA targets ADAM19, offering a potential therapeutic strategy for retinoblastoma patients.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) are crucial in retinoblastoma (RB) development.
- Aberrant miR-145 expression is observed in various cancers, but its role in RB remains undefined.
Purpose of the Study:
- To investigate the function and mechanism of miR-145 in retinoblastoma.
- To identify potential therapeutic targets for RB treatment.
Main Methods:
- Quantitative real-time PCR to assess miR-145 and ADAM19 expression in RB tissues and cell lines.
- In vitro assays (proliferation, migration, invasion) to evaluate the effects of miR-145 and ADAM19.
- Bioinformatic analysis and luciferase reporter assays to confirm ADAM19 as a direct target of miR-145.
Main Results:
- miR-145 was significantly downregulated in RB tissues and cell lines.
- Overexpression of miR-145 suppressed RB cell proliferation, migration, and invasion.
- ADAM19 was identified as a direct target of miR-145, and its silencing mimicked the effects of miR-145.
- A negative correlation between miR-145 and ADAM19 expression was observed in RB tissues.
Conclusions:
- miR-145 functions as a tumor suppressor in retinoblastoma by directly targeting ADAM19.
- miR-145 warrants further investigation as a potential therapeutic target for retinoblastoma.
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