Abstract
Background
Glioblastoma (GBM) is the most common malignant tumor originating in the brain parenchyma. The invasive and infiltrative properties of glioblastoma result in poor clinical prognosis to conventional therapies. Emerging reports on microRNAs as important regulators during the process of EMT provide new insights into treating glioblastoma through new targets. However, underlying molecular mechanism of the regulation of miR-101-3p in glioblastoma remains unclear.
Methods
Level of miR-101-3p was determined in GBM cell lines by qRT-PCR. MTT, colony formation and transwell assays were utilized to evaluate functions of overexpression of miR-101-3p/knock down of TRIM44 on proliferation, migration and invasion in GBM cells. Direct interaction between miR-101-3p and TRIM44 was validated using dual luciferase reporter system and impacts of overexpression of miR-101-3p/knock down of TRIM44 on regulation of EMT markers were assessed by Western blotting.
Results
MiR-101-3p was validated to be repressed expressed in glioblastoma cancer cell lines. Both overexpression of miR-101-3p and knock down of TRIM44 attenuated proliferation, migration and invasion of glioblastoma cell lines in vitro. TRIM44 was shown to promote EMT in GBM progress and reverse inhibitory function of miR-101-3p. MiR-101-3p was found to suppress the expression of TRIM44 via directly targeting its 3′UTR.
Conclusions
Our findings suggested miR-101-3p regulated proliferation and migration of glioblastoma cells through attenuating TRIM44 induced EMT via direct targeting 3′UTR of TRIM44, which provided preliminary study of potential therapeutic target in future GBM treatment.
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Data availability
Statistical analysis was performed by GraphPad Prism software version 6.0 (GraphPad Software Inc, USA).
Change history
22 September 2023
A Correction to this paper has been published: https://doi.org/10.1007/s11060-023-04429-w
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Acknowledgements
We would like to give our sincere gratitude to the reviewers for their constructive comments.
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LL: Guarantor of integrity of the entire study, LL, SMY: study concepts, XZF, CZC: study design, LL, ZSC: definition of intellectual content, SMY, ZSC: literature research, SMY, XZF: clinical studies, SMY, XZF: experimental studies, CZC: data acquisition, CZC, ZSC: data analysis, XZF, CZC: statistical analysis, XZF, CZC: manuscript preparation, LL, SMY: manuscript editing, LL: manuscript review.
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The original version of this article has been revised: Figures 2A, 2C, 2E, 5A, 5c, 5E and 6C have been corrected.
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Li, L., Shao, MY., Zou, SC. et al. MiR-101-3p inhibits EMT to attenuate proliferation and metastasis in glioblastoma by targeting TRIM44. J Neurooncol 141, 19–30 (2019). https://doi.org/10.1007/s11060-018-2973-7
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DOI: https://doi.org/10.1007/s11060-018-2973-7