Article ; Online: Circ-E2F3 acts as a ceRNA for miR-204-5p to promote proliferation, metastasis and apoptosis inhibition in retinoblastoma by regulating ROCK1 expression.
Experimental and molecular pathology
2021 Volume 120, Page(s) 104637
Abstract: Background: Circular RNA (circRNA) plays an important role in the malignant progression of many tumors, including retinoblastoma (RB). However, the role and regulatory mechanism of circ-E2F3 in RB have not been fully elucidated.: Methods: ... ...
Abstract | Background: Circular RNA (circRNA) plays an important role in the malignant progression of many tumors, including retinoblastoma (RB). However, the role and regulatory mechanism of circ-E2F3 in RB have not been fully elucidated. Methods: Quantitative real-time PCR was used to measure circ-E2F3, miR-204-5p and Rho-associated protein kinase 1 (ROCK1) expression. Cell proliferation, apoptosis and metastasis were monitored by MTT, colony formation, flow cytometry, transwell and wound healing assays. Dual-luciferase reporter assay was employed to verify the relationship between miR-204-5p and circ-E2F3 or ROCK1. ROCK1 protein expression was detected by western blot assay. Mice xenograft models were built to assess the role of circ-E2F3 on RB tumor growth. Results: Circ-E2F3 was upregulated in RB tissues and cells. Silencing of circ-E2F3 inhibited the proliferation, migration, invasion, and induced the apoptosis of RB cells in vitro, as well as reduced RB tumor growth in vivo. MiR-204-5p could be sponged by circ-E2F3, and its inhibitor reversed the suppressive effect of circ-E2F3 silencing on RB progression. In addition, ROCK1 was confirmed to interact with miR-204-5p. MiR-204-5p regulated RB progression by targeting ROCK1. Also, circ-E2F3 positively regulated ROCK1 expression by sponging miR-204-5p. Conclusion: Circ-E2F3 functioned as a tumor promoter in RB through the miR-204-5p/ROCK1 axis. |
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MeSH term(s) | Animals ; Apoptosis ; Biomarkers, Tumor/genetics ; Biomarkers, Tumor/metabolism ; Cell Movement ; Cell Proliferation ; E2F3 Transcription Factor/genetics ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; MicroRNAs/genetics ; Neoplasm Invasiveness ; Prognosis ; RNA, Circular/genetics ; Retinal Neoplasms/genetics ; Retinal Neoplasms/metabolism ; Retinal Neoplasms/pathology ; Retinoblastoma/genetics ; Retinoblastoma/metabolism ; Retinoblastoma/pathology ; Survival Rate ; Tumor Cells, Cultured ; Xenograft Model Antitumor Assays ; rho-Associated Kinases/genetics ; rho-Associated Kinases/metabolism |
Chemical Substances | Biomarkers, Tumor ; E2F3 Transcription Factor ; E2F3 protein, human ; MIRN204 microRNA, human ; MicroRNAs ; RNA, Circular ; ROCK1 protein, human (EC 2.7.11.1) ; rho-Associated Kinases (EC 2.7.11.1) |
Language | English |
Publishing date | 2021-04-18 |
Publishing country | Netherlands |
Document type | Journal Article |
ZDB-ID | 207655-x |
ISSN | 1096-0945 ; 0014-4800 |
ISSN (online) | 1096-0945 |
ISSN | 0014-4800 |
DOI | 10.1016/j.yexmp.2021.104637 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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