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Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
MicroRNA-612 inhibits cervical cancer progression by targeting NOB1
Yang Jin1, Xu Zhou2, Xiaoxiao Yao1
1Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, China.
Abstract:
Recently, many studies have shown that microRNA (miR)-612 is involved in cancer progression. However, the role of miR-612 in cervical cancer remains unclear. The present study aims to investigate the biological effects of miR-612 on cervical cancer. The expression of miR-612 in cervical cancer tissues and cell lines was analysed by quantitative reverse transcription-polymerase chain reaction. The effect of miR-612 cell proliferation, migration, invasion and apoptosis was studied by appropriate methods. Protein expression was determined by Western blot analyses. Bioinformatics analysis and luciferase reporter assays were performed to clarify the relationship between miR-612 and nin one binding protein (NOB1). A xenograft model was established to examine the role of miR-612 in vivo tumorigenesis. Cervical cancer tissues and cell lines showed down-regulation of miR-612 expression, which was associated with the Fédération Internationale de Gynécologie et d'Obstétrique (FIGO) stage and lymph node metastasis. Functional assays revealed that miR-612 overexpression significantly suppressed cervical cancer cell proliferation, migration and invasion in vitro and delayed tumour growth in vivo. Mechanically, miR-612 targeted NOB1 in cervical cancer cells, revealing a negative correlation between miR-612 and NOB1in cervical cancer samples. NOB1 overexpression partially reversed the inhibitory effects of miR-612 overexpression in cervical cancer cells. Taken together, these findings indicate that miR-612 functions as a tumour suppressor in cervical cancer and suggest that miR-612 may be a potential target in the therapeutic intervention of this malignancy.
Insights
MicroRNA-612 (miR-612) acts as a tumor suppressor in cervical cancer. Its reduced expression correlates with advanced disease, and restoring miR-612 inhibits cancer cell growth and metastasis.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- MicroRNA-612 (miR-612) has been implicated in various cancers, but its function in cervical cancer is not well understood.
- Cervical cancer progression is a significant global health concern, necessitating research into novel therapeutic targets.
Purpose of the Study:
- To investigate the biological role and molecular mechanisms of miR-612 in cervical cancer.
- To determine if miR-612 can serve as a potential therapeutic target for cervical cancer.
Main Methods:
- Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) to assess miR-612 expression.
- In vitro assays (proliferation, migration, invasion, apoptosis) and in vivo xenograft models to evaluate miR-612 function.
- Bioinformatics, luciferase reporter assays, and Western blot to elucidate the miR-612/NOB1 interaction.
Main Results:
- miR-612 expression was significantly downregulated in cervical cancer tissues and cell lines, correlating with FIGO stage and lymph node metastasis.
- Overexpression of miR-612 suppressed cervical cancer cell proliferation, migration, and invasion in vitro, and inhibited tumor growth in vivo.
- miR-612 directly targets nin one binding protein (NOB1), and NOB1 overexpression partially rescued the tumor-suppressive effects of miR-612.
Conclusions:
- miR-612 functions as a tumor suppressor in cervical cancer by targeting NOB1.
- Restoring miR-612 levels may represent a promising therapeutic strategy for cervical cancer treatment.
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