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The long noncoding RNA Six3OS acts in trans to regulate retinal development by modulating Six3 activity.
Nicole A Rapicavoli1, Erin M Poth, Heng Zhu
1Department of Neuroscience, Neurology and Ophthalmology, Center for High-Throughput Biology and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
Six3OS, a long non-coding RNA, is crucial for retinal cell development by regulating Six3 activity. It acts as a scaffold to recruit histone modification enzymes, impacting neural development.
Area of Science:
- Developmental Biology
- RNA Biology
- Genetics
Background:
- Long non-coding RNAs (lncRNAs) are abundant during embryonic development.
- The functions of most lncRNAs are not well understood.
Purpose of the Study:
- To investigate the role of Six3OS, a lncRNA, in embryonic development.
- To understand the mechanism by which Six3OS regulates gene expression.
Main Methods:
- Overexpression and knockdown of Six3OS in developing retinal cells.
- Analysis of Six3 protein activity and expression.
- Biochemical assays to identify Six3OS binding partners.
Main Results:
- Six3OS is essential for retinal cell specification.
- Six3OS regulates Six3 activity without altering Six3 expression.
- Six3OS directly binds to Ezh2 and Eya proteins, acting as a scaffold.
Conclusions:
- Promoter-associated lncRNAs can modulate the activity of protein-coding genes.
- Six3OS plays a significant role in neural development control.
- This study reveals a novel regulatory mechanism involving lncRNAs.
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