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Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
Published on: April 26, 2017
Alternative mRNA Splicing and Promising Therapies in Cancer
1Department of Biological Sciences, College of Science and Health, Benedictine University, Lisle, IL 60532, USA.
Abstract:
Cancer is among the leading causes of mortality worldwide. While considerable attention has been given to genetic and epigenetic sources of cancer-specific cellular activities, the role of alternative mRNA splicing has only recently received attention as a major contributor to cancer initiation and progression. The distribution of alternate mRNA splicing variants in cancer cells is different from their non-cancer counterparts, and cancer cells are more sensitive than non-cancer cells to drugs that target components of the splicing regulatory network. While many of the alternatively spliced mRNAs in cancer cells may represent "noise" from splicing dysregulation, certain recurring splicing variants have been shown to contribute to tumor progression. Some pathogenic splicing disruption events result from mutations in cis-acting splicing regulatory sequences in disease-associated genes, while others may result from shifts in balance among naturally occurring alternate splicing variants among mRNAs that participate in cell cycle progression and the regulation of apoptosis. This review provides examples of cancer-related alternate splicing events resulting from each step of mRNA processing and the promising therapies that may be used to address them.
Insights
Alternative messenger RNA (mRNA) splicing plays a key role in cancer initiation and progression. Understanding these splicing variants and targeting them offers promising new cancer therapies.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Cancer is a leading global cause of mortality.
- Genetic and epigenetic factors are well-studied in cancer, but alternative mRNA splicing is an emerging area of focus.
- Alternative splicing patterns differ between cancer and non-cancer cells, influencing cancer development.
Purpose of the Study:
- To review the role of alternative mRNA splicing in cancer initiation and progression.
- To highlight how cancer cells are sensitive to drugs targeting the splicing regulatory network.
- To discuss pathogenic splicing disruptions and their contribution to tumor progression.
Main Methods:
- Review of existing literature on alternative mRNA splicing in cancer.
- Analysis of examples of cancer-related alternative splicing events.
- Discussion of therapeutic strategies targeting splicing.
Main Results:
- Alternative mRNA splicing variants are distinct in cancer cells compared to normal cells.
- Certain recurring splicing variants contribute to tumor progression.
- Splicing disruptions can arise from mutations or altered balances of splicing variants.
Conclusions:
- Alternative mRNA splicing is a significant contributor to cancer.
- Targeting splicing regulatory networks presents a promising therapeutic avenue for cancer treatment.
- Further research into cancer-specific splicing events can lead to novel treatment strategies.
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