Tropical Journal of Pharmaceutical Research

Original Research Article | OPEN ACCESS

Effects of long non-coding RNA MALAT1-targeting miR-570-3p and miR-34a on the invasion, proliferation, and apoptosis of human retinoblastoma cells

Dejing Shi, Xiuhong Feng, Xuchen Ding

Department of Ophthalmology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China;

For correspondence:- Xuchen Ding Email: xuchen_ding@126.com Tel:+8645182576576

Accepted: 31 October 2022 Published: 30 November 2022

Citation: Shi D, Feng X, Ding X. Effects of long non-coding RNA MALAT1-targeting miR-570-3p and miR-34a on the invasion, proliferation, and apoptosis of human retinoblastoma cells. Trop J Pharm Res 2022; 21(11):2337-2344 doi: 10.4314/tjpr.v21i11.10

© 2022 The authors.
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Abstract

Purpose: To investigate the expression of lncRNA MALAT1-targeting miR-570-3p and miR-34a and its effects on the invasion, proliferation, and apoptosis of human retinoblastoma cells.

Methods: MiR-34a, miR-570-3p, and IncRNA MALAT1 in a human normal retinal vascular endothelial cell line (ACBRI-181), human retinoblastoma cell line (SO-Rb50), human normal retinal tissue and human retinoblastoma tissue were determined. Luciferase assay was used to verify the targeting relationship between LncRNA MALAT1 and miR-570-3p and miR-34a. while cell invasion, cell apoptosis and cell proliferation were assessed by Transwell assay, flow cytometry, and tumor pellet-forming assay, respectively.

Results: LncRNA MALAT1 in SO-Rb50 cell line and human retinoblastoma tissue line were significantly up-regulated, while the expression levels of miR-34a and miR-570-3p were significantly down-regulated (p < 0.05). Luciferase assay results showed that lncRNA MALAT1 targeted miR-570-3p and miR-34a. The invasion and proliferation of SO-Rb50 cells in the miR-570-3p inhibitor and miR-34a inhibitor groups were significantly increased, while the apoptosis of SO-Rb50 cells was significantly decreased (p < 0.05). However, the invasion and proliferation of SO-Rb50 cells in sh-MALAT1 group were significantly decreased, while apoptosis significantly increased. However, compared with sh-MALAT1 group alone, the invasion and proliferation of SO-Rb50 cells in co-transfected sh-MALAT1+miR-570-3p inhibitor + miR-34a inhibitor group w significantly increased, but apoptosis significantly decreased (p < 0.05).

Conclusion: LncRNA MALAT1 negatively regulates miR-570-3p and miR-34a to promote the invasion and proliferation of human retinoblastoma SO-Rb50 cells and inhibit apoptosis. These findings may be of significance in developing suitable therapies for human retinoblastoma

Keywords: Long non-coding RNA, microRNA, Human retinoblastoma, Cell proliferation, Apoptosis, Cell invasion