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Identification and Characterization of Small Molecules That Inhibit Nonsense-Mediated RNA Decay and Suppress Nonsense p53 Mutations
Open accessAbstract
Many of the gene mutations found in genetic disorders, including cancer, result in premature termination codons (PTC) and the rapid degradation of their mRNAs by nonsense-mediated RNA decay (NMD). We used virtual library screening, targeting a pocket in the SMG7 protein, a key component of the NMD mechanism, to identify compounds that disrupt the SMG7–UPF1 complex and inhibit NMD. Several of these compounds upregulated NMD-targeted mRNAs at nanomolar concentrations, with minimal toxicity in cell-based assays. As expected, pharmacologic NMD inhibition disrupted SMG7–UPF1 interactions. When used in cells with PTC-mutated p53, pharmacologic NMD inhibition combined with a PTC “read-through” drug led to restoration of full-length p53 protein, upregulation of p53 downstream transcripts, and cell death. These studies serve as proof-of-concept that pharmacologic NMD inhibitors can restore mRNA integrity in the presence of PTC and can be used as part of a strategy to restore full-length protein in a variety of genetic diseases. Cancer Res; 74(11); 3104–13. ©2014 AACR.
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Bobadilla, J. L., Macek, M., Fine, J. P., & Farrell, P. M. (2002) · Human Mutation · doi:10.1002/humu.10041 · Cited by 1,032
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Metadata
- Authors
- Martin, L., Grigoryan, A., Wang, D., Wang, J., Breda, L., Rivella, S., Cardozo, T., & Gardner, L. B.
- Venue
- Cancer Research
- Published
- 2014-05-29
- Volume
- 74
- Issue
- 11
- Pages
- 3104-3113
- ISSN
- 0008-5472 (ISSN-L)
- 1538-7445
- OpenAlex
- W2117617781
- Cited by
- 165
- References
- 1
- FWCI
- 4.38
- Type
- journal article
- Language
- en
- Open access
- green
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- Martin, L., Grigoryan, A., Wang, D., Wang, J., Breda, L., Rivella, S., Cardozo, T., & Gardner, L. B. (2014). Identification and Characterization of Small Molecules That Inhibit Nonsense-Mediated RNA Decay and Suppress Nonsense p53 Mutations. Cancer Research. https://doi.org/10.1158/0008-5472.can-13-2235
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