Identification of microRNA-target interaction in APRIL-knockdown colorectal cancer cells
1Department of Clinical Laboratory Center, Affiliated Hospital of Nantong University, School of Public Health, Nantong University, Nantong, China.
Abstract:
MicroRNAs (miRNAs) regulate mammalian gene expression by targeting mRNAs and have key roles in several cellular processes, including differentiation, development, apoptosis and cancer pathomechanisms. Our previous studies have confirmed that a proliferation-inducing ligand (APRIL) gene is overexpressed in colorectal cancer (CRC) tumors and SW480 cells. To study the potential mechanisms of APRIL gene in the occurrence and development of the CRC, herein, we investigated whether APRIL-knockdown had the inhibitory effect on the growth of SW480 cells and had the simultaneous expression changes of miRNAs and mRNAs by microarrays. Our results suggest that siRNA-APRIL can effectively inhibit the growth of SW480 cells in vitro and in vivo and several miRNAs via specific pathways might be involved in regulating the phenotype of loss-of-function in APRIL-knockdown SW480 cells. Thus, our study highlights the possible mechanisms of miRNA-target regulating the function of APRIL gene in CRC cells, moreover, siRNA-APRIL holds great promise as a novel gene therapy approach for APRIL- positive CRC treatment.
Insights
This study shows that reducing the proliferation-inducing ligand (APRIL) gene inhibits colorectal cancer (CRC) cell growth. MicroRNAs (miRNAs) are involved in this process, suggesting potential new gene therapy for CRC.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- MicroRNAs (miRNAs) are crucial regulators of gene expression with roles in cellular processes and cancer.
- The proliferation-inducing ligand (APRIL) gene is overexpressed in colorectal cancer (CRC).
Purpose of the Study:
- To investigate the effect of APRIL gene knockdown on colorectal cancer (CRC) SW480 cell growth.
- To explore the simultaneous changes in miRNA and mRNA expression following APRIL knockdown in CRC cells.
Main Methods:
- Utilized microarrays to analyze miRNA and mRNA expression changes after APRIL knockdown in SW480 cells.
- Assessed the inhibitory effect of siRNA-APRIL on SW480 cell proliferation in vitro and in vivo.
Main Results:
- siRNA-mediated APRIL knockdown significantly inhibited the growth of SW480 cells.
- Identified several miRNAs potentially involved in regulating the loss-of-function phenotype in APRIL-knockdown CRC cells.
Conclusions:
- APRIL gene knockdown shows promise for inhibiting CRC growth.
- miRNA-target interactions may regulate APRIL gene function in CRC, highlighting potential gene therapy strategies for APRIL-positive CRC.
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