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Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
Published on: April 26, 2017
Unbalanced alternative splicing and its significance in cancer
1University of Newcastle-upon-Tyne, Institute of Human Genetics, International Centre for Life, Central Parkway, Newcastle-upon-Tyne, UK. j.venables@ncl.ac.uk
Abstract:
Alternative pre-mRNA splicing leads to distinct products of gene expression in development and disease. Antagonistic splice variants of genes involved in differentiation, apoptosis, invasion and metastasis often exist in a delicate equilibrium that is found to be perturbed in tumours. In several recent examples, splice variants that are overexpressed in cancer are expressed as hyper-oncogenic proteins, which often correlate with poor prognosis, thus suggesting improved diagnosis and follow up treatment. Global gene expression technologies are just beginning to decipher the interplay between alternatively spliced isoforms and protein-splicing factors that will lead to identification of the mutations in these trans-acting factors responsible for pathogenic alternative splicing in cancer.
Insights
Alternative pre-mRNA splicing generates diverse gene products, with altered forms linked to cancer progression and poor prognosis. Understanding these splice variants and their regulatory factors offers new diagnostic and therapeutic strategies.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Alternative pre-mRNA splicing produces distinct gene expression products crucial for development and disease.
- Dysregulation of splice variants in genes controlling cell differentiation, apoptosis, invasion, and metastasis is observed in tumors.
- Aberrant splicing contributes to oncogenesis and can serve as a prognostic marker.
Purpose of the Study:
- To investigate the role of alternative splicing in cancer development and progression.
- To highlight the significance of splice variants as potential diagnostic and therapeutic targets.
- To explore the interplay between alternatively spliced isoforms and splicing factors in pathogenic mechanisms.
Main Methods:
- Analysis of gene expression data focusing on alternative splicing.
- Correlation of splice variant overexpression with clinical outcomes.
- Review of emerging technologies for deciphering splicing factor interactions.
Main Results:
- Overexpressed splice variants in cancer often encode hyper-oncogenic proteins.
- These oncogenic splice variants correlate with poor patient prognosis.
- Perturbation of the delicate equilibrium of splice variants is a hallmark of cancer.
Conclusions:
- Alternative splicing plays a critical role in cancer pathogenesis.
- Identifying specific splice variants and their regulatory mutations can improve cancer diagnosis and treatment.
- Further research into splicing factors and their interplay with isoforms is essential for understanding and targeting cancer.
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