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Updated: Jul 18, 2026

08:53
A Reporter Based Cellular Assay for Monitoring Splicing Efficiency
Published on: September 15, 2021
Pre-mRNA splicing and retinitis pigmentosa
Daniel Mordes1, Xiaoyan Luo, Amar Kar
1Department of Pediatrics, John F. Kennedy Center for Research on Human Development, Nashville, TN, USA.
Molecular Vision
|November 18, 2006
Summary
Retinitis pigmentosa (RP) is a common cause of blindness. This review highlights new findings on mutations in pre-mRNA splicing factors causing autosomal dominant RP (adRP) and their molecular mechanisms.
Area of Science:
- Genetics
- Ophthalmology
- Molecular Biology
Background:
- Retinitis pigmentosa (RP) encompasses diverse genetic retinal diseases causing blindness.
- Autosomal dominant RP (adRP) is linked to mutations in several genes.
- Four identified adRP genes encode proteins crucial for pre-mRNA splicing.
Purpose of the Study:
- To review recent advancements in identifying adRP mutations in pre-mRNA splicing factor genes.
- To explore the molecular mechanisms underlying retinal degeneration in these cases.
Main Methods:
- Literature review of recent studies on adRP genetics.
- Analysis of identified mutations in splicing factor genes.
- Discussion of molecular pathways involved in retinal degeneration.
Main Results:
- Recent progress has been made in identifying specific adRP mutations within genes responsible for pre-mRNA splicing.
- These mutations highlight the critical role of splicing in retinal health.
- Emerging data suggests specific molecular mechanisms driving retinal degeneration.
Conclusions:
- Pre-mRNA splicing defects are significant contributors to autosomal dominant retinitis pigmentosa.
- Further research into these molecular mechanisms is crucial for understanding and potentially treating RP.
- Identifying mutations in splicing factors offers new avenues for investigating RP pathogenesis.
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Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
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...
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...
Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
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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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl guanosine). This 5’ cap helps the...
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl guanosine). This 5’ cap helps the...
