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NOTCH3
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NOTCH3
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesNOTCH3, CADASIL, CASIL, IMF2, LMNS, CADASIL1, notch 3, notch receptor 3
External IDsOMIM: 600276; MGI: 99460; HomoloGene: 376; GeneCards: NOTCH3; OMA:NOTCH3 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000435

NM_008716

RefSeq (protein)

NP_000426

NP_032742

Location (UCSC)Chr 19: 15.16 – 15.2 MbChr 17: 32.34 – 32.39 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Neurogenic locus notch homolog protein 3 (Notch 3) is a protein that in humans is encoded by the NOTCH3 gene.[5][6]

Function

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This gene encodes the third discovered human homologue of the Drosophila melanogaster type I membrane protein notch. In Drosophila, notch interaction with its cell-bound ligands (delta, serrate) establishes an intercellular signalling pathway that plays a key role in neural development. Homologues of the notch-ligands have also been identified in human, but precise interactions between these ligands and the human notch homologues remains to be determined.

Pathology

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Micrograph showing CADASIL with a Notch 3 immunostain

Mutations in NOTCH3 have been identified as the underlying cause of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL).[6] Mutations in NOTCH3 have also been identified in families with Alzheimer's disease.[7] Adult Notch3 knock-out mice show incomplete neuronal maturation in the spinal cord dorsal horn, resulting in permanently increased nociceptive sensitivity.[8] Mutations in NOTCH3 are associated to lateral meningocele syndrome.[9]

Pharmaceutical target

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Notch3 is being investigated as a target for anti-cancer drugs, as it is overexpressed in several types of cancers.[10] Early clinical trials of Pfizer's PF-06650808, an anti-Notch3 antibody linked to a cytotoxic drug, showed efficacy against solid tumors.[11]

References

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Further reading

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