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Proteome analysis of cultivated vascular smooth muscle cells from a CADASIL patient
Vise andre og tillknytning
2007 (engelsk)Inngår i: Molecular medicine (Cambridge, Mass. Print), ISSN 1076-1551, E-ISSN 1528-3658, Vol. 13, nr 5-6, s. 305-314Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a vascular dementing disease caused by mutations in NOTCH3 gene, a majority of which are missense mutations leading to an uneven number of cysteine residues in epidermal growth factor like repeats in the extracellular domain of Notch3 receptor (N3ECD). Disease is characterized by degeneration of vascular smooth muscle cells (VSMC) and accumulation of N3ECD on the VSMCs of small and middle-sized arteries. Recent studies have demonstrated that impairment of Notch3 signaling is not the primary cause of the disease. In the present study we have characterized the protein expression pattern of a unique material of genetically genuine cultured human CADASIL VSMCs by proteomic analysis. We identified 11 differentially expressed proteins, which are involved in protein degradation and folding, contraction of VSMCs and cellular stress. Based on the results the misfolding of Notch3 seems to cause endoplasmic reticulum stress and activation of unfolded protein response leading to increased reactive oxygen species and inhibition of cell proliferation. In addition, upregulation of contractile proteins suggests an alteration in the signalling system of VSMC contraction. The accumulation of the N3ECD on the cell surface possibly upregulates the angiotensin II regulatory feedback loop and thereby enhances the readiness of the cells to respond to angiotensin II stimulation.

sted, utgiver, år, opplag, sider
2007. Vol. 13, nr 5-6, s. 305-314
Emneord [en]
CADASIL/*pathology, Cells; Cultured, Collagen/metabolism, Electrophoresis; Gel; Two-Dimensional, Gels, Gene Expression Profiling, Humans, Infant; Newborn, Muscle Contraction, Muscle; Smooth; Vascular/*chemistry/*pathology, Myocytes; Smooth Muscle/*chemistry/*pathology, Proteins/metabolism, Proteome/*analysis
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URN: urn:nbn:se:uu:diva-16695DOI: 10.2119/2006-00069.IhalainenISI: 000248312600009PubMedID: 17622327OAI: oai:DiVA.org:uu-16695DiVA, id: diva2:44466
Tilgjengelig fra: 2008-06-03 Laget: 2008-06-03 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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