Abstract
Glioma is characterized by high morbidity and mortality worldwide. Circular RNA (circRNA) matrix metallopeptidase 1 (circMMP1, hsa_circ_0024108) was reported to be increased in glioma. This study is designed to explore the role and mechanism of circMMP1 in glioma progression. CircMMP1, linear MMP1, microRNA-195-5p (miR-195-5p), and transforming growth factor-beta-induced 2 (TGIF2) level were detected by real-time quantitative polymerase chain reaction (RT-qPCR). The protein levels of TGIF2, Beclin1, and p62 were examined by Western blot assay. Colony number, migration, invasion, and apoptosis were detected by Colony formation, transwell, and flow cytometry assays, severally. The binding relationship between miR-195-5p and circMMP1 or TGIF2 was predicted by starbase or Targetscan and then verified by a dual-luciferase reporter and RNA Immunoprecipitation (RIP) assays. The biological role of circMMP1 on glioma cell growth was examined by the xenograft tumor model in vivo. CircMMP1 and TGIF2 expression were upregulated, and miR-195-5p expression was downregulated in glioma tissues and cells. And the knockdown of circMMP1 could block colony formation, migration, and invasion and expedite apoptosis and autophagy in glioma cells. The mechanical analysis discovered that circMMP1 acted as a sponge of miR-195-5p to regulate TGIF2 expression. CircMMP1 knockdown suppressed cell growth of glioma in vivo. CircMMP1 boosted glioma progression partly by targeting the miR-195-5p/TGIF2 axis, suggesting a promising circRNA-targeted therapy for glioma treatment.
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Abbreviations
- TGIF2:
-
Transforming growth factor-beta-induced 2
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This study was supported by Key Discipline Construction Project of Pudong Health Bureau of Shanghai (Grant No. PWZxk2017-23, PWYgf2018-05).
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KZ conceived and designed the experiments, performed the experiments, analyzed and interpreted the data, and wrote the paper. QW analyzed and interpreted the data and performed the experiments. DZ performed the experiments and analyzed the data. ZL analyzed and interpreted the data.
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Zhang, K., Wang, Q., Zhao, D. et al. Circular RNA circMMP1 Contributes to the Progression of Glioma Through Regulating TGIF2 Expression by Sponging miR-195-5p. Biochem Genet 60, 770–789 (2022). https://doi.org/10.1007/s10528-021-10119-x
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DOI: https://doi.org/10.1007/s10528-021-10119-x