Neurogenic locus notch homolog protein 3 (NOTCH3) mRNA (NOTCH3 mRNA)

Neurogenic locus notch homolog protein 3 (NOTCH3) mRNA is the genetic template for the NOTCH3 receptor, a single-pass transmembrane protein involved in the highly conserved Notch signaling pathway (UniProt: P43331). This pathway is fundamental for regulating cell differentiation, proliferation, and apoptosis, with a specific emphasis on the maturation and survival of vascular smooth muscle cells (NCBI Gene: 4854). Pathologically, missense mutations in the NOTCH3 gene result in the accumulation of the Notch3 extracellular domain, causing Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL) (PMID: 27164705). Additionally, overexpression of NOTCH3 mRNA is linked to poor prognosis and drug resistance in several cancers, including ovarian and lung carcinomas (PMID: 30217935). Therapeutic targeting of NOTCH3 mRNA, primarily through antisense oligonucleotides (ASOs) like IONIS-NOTCH3-Rx, aims to degrade the transcript and prevent the translation of the pathogenic protein (ClinicalTrials.gov: NCT04461600). This approach is particularly promising for CADASIL, where reducing the mutant protein load may halt the progression of small vessel disease. However, challenges include ensuring specificity to avoid cross-reactivity with other Notch receptors and managing potential systemic toxicities associated with ASO therapy. Overall, NOTCH3 mRNA represents a high-value target for precision medicine in both genetic vascular disorders and oncology.

Other names

NOTCH3Neurogenic locus notch homolog protein 3CADASILCASILIMF2

Antisense oligonucleotide-mediated degradation of mRNA via RNase H1, leading to reduced translation of the Notch3 protein.