Related Experiment Video
Updated: Jun 5, 2025

09:44
High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes
Published on: March 3, 2015
9.4K
Exploring the therapeutic potential of modulating nonsense-mediated mRNA decay
Mary McMahon1, Lynne E Maquat2,3
1ReviR Therapeutics, Brisbane, California 94005, USA mary.mcmahon@revirtx.com lynne_maquat@urmc.rochester.edu.
Summary
Nonsense-mediated mRNA decay (NMD) regulates gene expression and causes disease. Novel therapeutics aim to modulate NMD for treating genetic disorders, offering hope for new treatments.
Area of Science:
- Molecular Biology
- Genetics
- Pharmacology
Background:
- Nonsense-mediated mRNA decay (NMD) is a crucial cellular surveillance pathway involved in gene expression regulation.
- NMD dysfunction is implicated in the pathogenesis of various genetic diseases.
- Current therapeutic strategies explore modulating NMD for disease treatment.
Purpose of the Study:
- To review emerging therapeutic approaches targeting the NMD pathway.
- To discuss the potential of NMD modulation for treating genetic disorders.
- To highlight challenges in the clinical development of NMD-targeting therapeutics.
Main Methods:
- Review of current literature on NMD and therapeutic strategies.
- Analysis of novel approaches for NMD modulation.
- Discussion of clinical development challenges.
Main Results:
- Several novel therapeutic strategies aim to directly counteract disease-causing mutations or globally dampen NMD activity.
- Therapeutics can hijack or inhibit NMD machinery to modulate gene expression.
- Pre-mRNA splicing modulation is explored to control transcript-specific NMD.
Conclusions:
- Targeted and global NMD modulators (inhibitors and activators) show promise for revolutionizing genetic disorder treatment.
- NMD-targeted therapies offer potential for diseases with high unmet medical needs.
- Further research and clinical development are needed to overcome challenges in NMD-based therapeutics.
Related Concept Videos
Nonsense-mediated mRNA Decay
2.8K
2.8K
Nuclear Export of mRNA
7.5K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
7.5K
mRNA Stability and Gene Expression
5.5K
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability
5.5K
Regulation of Expression Occurs at Multiple Steps
22.4K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
22.4K
MicroRNAs
3.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.0K
Regulation of Expression at Multiple Steps
869
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
869

