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Published on: February 2, 2016
Specific expression pattern of a novel Otx2 splicing variant during neural differentiation
Zhongliang Liu1, Liankai Chi, Yujiang Fang
1Shanghai Tenth People's Hospital and Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai 200092, China.
Gene
|April 10, 2013
Summary
Researchers discovered a new Otx2 gene variant, Otx2c, which functions as a non-coding RNA. Its expression in human embryonic stem cells is regulated during differentiation, highlighting alternative splicing
Area of Science:
- Molecular Biology
- Genetics
- Stem Cell Biology
Background:
- The Otx2 gene plays a crucial role in embryonic development.
- Alternative splicing is a key mechanism for generating diverse RNA transcripts from a single gene.
- Understanding the regulation of gene expression in stem cells is vital for developmental biology.
Purpose of the Study:
- To identify and characterize novel splicing variants of the Otx2 gene.
- To investigate the functional implications of the identified Otx2 splicing variant.
- To explore the role of alternative splicing in regulating Otx2 expression during human embryonic stem cell differentiation.
Main Methods:
- Cloning of the Otx2c splicing variant.
- Bioinformatic analysis to predict RNA function.
- Quantitative analysis of Otx2c expression in differentiating human embryonic stem cells.
Main Results:
- A novel Otx2 splicing variant, Otx2c, was identified, lacking exon 4 and part of the homeodomain.
- Otx2c contains a premature stop codon and is predicted to be a non-protein coding RNA.
- Otx2c is predominantly expressed in undifferentiated human embryonic stem cells and its levels decrease upon differentiation.
Conclusions:
- A single Otx2 pre-mRNA can generate both coding and non-coding RNA transcripts via alternative splicing.
- The alternative splicing of Otx2 is tightly regulated during human embryonic stem cell differentiation.
- This study reveals a novel layer of gene regulation involving non-coding RNA production from a developmentally important gene.
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There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
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