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Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
Published on: April 26, 2017
Modulation of alternative splicing by anticancer drugs
Sayeed Ur Rehman1, Mohammed Amir Husain1, Tarique Sarwar1
1Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India.
Abstract:
Pre-mRNA alternative splicing is a highly regulated process that generates multiple mRNAs coding different protein isoforms. These protein isoforms may have similar, different, or even opposing functions. Expression of genes involved in cell growth and apoptosis are often altered in cancer cells. Studying the alternative splicing patterns of these important genes can have a significant role in the treatment of cancer. Resistance to chemotherapy is often caused due to overexpression of anti-apoptotic isoforms or suppression of pro-apoptotic isoforms. Anticancer drugs are capable of modulating the expression of different transcript isoforms of genes. Some anticancer drugs induce pro-apoptotic transcript isoforms leading to apoptosis or at least sensitizing cells to chemotherapy. However, in other cases, they shift the splicing toward isoforms having anti-apoptotic functions thus conferring resistance to chemotherapy. This mini-review summarizes the current knowledge about alternative splicing of some important genes involved in cancers. Furthermore, splicing patterns as well as generation of functionally distinct protein isoforms have also been mentioned. Role of various anticancer drugs in modulating alternative splicing of these genes has been reported along with a brief insight into their mechanism of action. Modulation of alternative splicing toward production of pro-apoptotic isoforms of various genes by anticancer drugs offers great therapeutic potential in the treatment of cancer.
Insights
Alternative splicing generates diverse protein isoforms, impacting cancer cell growth and apoptosis. Anticancer drugs can manipulate splicing, offering potential for novel cancer therapies by promoting pro-apoptotic forms.
Area of Science:
- Molecular Biology
- Cancer Research
- Pharmacology
Background:
- Pre-messenger RNA (mRNA) alternative splicing produces distinct protein isoforms with varied functions.
- Altered gene expression in cell growth and apoptosis is characteristic of cancer cells.
- Alternative splicing patterns of key cancer-related genes are crucial for understanding and treating cancer.
Purpose of the Study:
- To review current knowledge on alternative splicing in important cancer-related genes.
- To discuss the generation of functionally distinct protein isoforms through alternative splicing.
- To explore the role of anticancer drugs in modulating alternative splicing patterns and their therapeutic potential.
Main Methods:
- Review of existing literature on alternative splicing in cancer.
- Analysis of splicing patterns and resulting protein isoforms.
- Examination of anticancer drug mechanisms in modulating gene splicing.
Main Results:
- Chemotherapy resistance can arise from altered expression of anti-apoptotic or pro-apoptotic isoforms.
- Anticancer drugs can either induce pro-apoptotic isoforms (sensitizing cells) or anti-apoptotic isoforms (conferring resistance).
- Specific examples of gene splicing modulation by anticancer drugs are discussed.
Conclusions:
- Alternative splicing plays a significant role in cancer development and treatment.
- Anticancer drugs can modulate alternative splicing, influencing therapeutic outcomes.
- Shifting splicing towards pro-apoptotic isoforms presents a promising therapeutic strategy for cancer treatment.
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