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Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer
Published on: March 14, 2019
Role of microRNA-30c targeting ADAM19 in colorectal cancer
Qian Zhang1, Lei Yu1, Dandan Qin2
1Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150086, PR China; Colorectal Cancer Institute of Harbin Medical University, Harbin, Heilongjiang, 150086, PR China.
Abstract:
MicroRNAs (miRNAs) are deregulated in a number of cancers including colorectal cancer. MiR-30c belongs to miR-30 family, and is involved in a variety of malignant diseases. In this study, we detected the expression of miR-30c in colon cancer cell lines and clinical colon cancer specimens. MiR-30c was shown to be dramatically down-regulated both in cell lines and cancer tissues. Additionally, miR-30c could inhibit cancer cell growth, migration and invasion in vitro. Consistently, stable over-expression of miR-30c inhibited the growth and lung metastasis of colon cancer cell xenografts in vivo. Furthermore, bioinformatics algorithm and luciferase reporter assay indicated ADAM19 as a direct target of miR-30c. Of interest, further experiments demonstrated that inhibition of ADAM19 by miR-30c partially mediated the anti-tumor effect of miR-30c. Overall, our study provides the new insight that miR-30c inhibited colon cancer cells via targeting ADAM19. Thus, miR-30c might serve as a promising therapeutic strategy for colon cancer treatment.
Insights
MicroRNA-30c (miR-30c) is significantly reduced in colon cancer. Restoring miR-30c inhibits tumor growth and metastasis by targeting ADAM19, offering a potential new colon cancer therapy.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- MicroRNAs (miRNAs) are crucial regulators of gene expression implicated in various cancers.
- Colorectal cancer (CRC) exhibits dysregulated miRNA expression, impacting tumor progression.
- The miR-30 family, including miR-30c, plays a role in diverse malignant conditions.
Purpose of the Study:
- To investigate the expression and function of miR-30c in colon cancer.
- To identify the molecular targets and mechanisms underlying miR-30c's role in colon cancer.
- To evaluate miR-30c as a potential therapeutic agent for colon cancer.
Main Methods:
- Expression analysis of miR-30c in colon cancer cell lines and clinical specimens.
- In vitro assays to assess the impact of miR-30c on cell growth, migration, and invasion.
- In vivo studies using colon cancer xenografts to evaluate tumor growth and metastasis.
- Bioinformatics analysis and luciferase reporter assays to identify and validate miR-30c targets.
- Experiments to confirm the role of ADAM19 in mediating miR-30c's anti-tumor effects.
Main Results:
- MiR-30c expression was significantly down-regulated in colon cancer cell lines and tissues.
- Overexpression of miR-30c suppressed colon cancer cell proliferation, migration, and invasion in vitro.
- Stable miR-30c expression inhibited tumor growth and lung metastasis in vivo xenograft models.
- ADAM19 was identified as a direct target of miR-30c.
- Inhibition of ADAM19 by miR-30c partially contributed to its anti-tumor effects.
Conclusions:
- MiR-30c acts as a tumor suppressor in colon cancer.
- The anti-tumor activity of miR-30c is partly mediated through the downregulation of ADAM19.
- MiR-30c represents a promising molecular target for colon cancer therapy.
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