Characterization of mutated protein encoded by partially duplicated fibrillin-1 gene in tight skin (TSK) mice
S Saito, H Nishimura, TD Brumeanu, S Casares… - Molecular …, 1999 - Elsevier
S Saito, H Nishimura, TD Brumeanu, S Casares, AC Stan, T Honjo, CA Bona
Molecular immunology, 1999•ElsevierFibrillin-1 (Fbn-1) is a ubiquitous protein present in the extracellular matrix of various organs
and it is a major component of microfibrils embedded in the core of elastic fibers. In humans,
mutations or deletions of the Fbn-1 gene are associated with several genetic diseases. In
addition, several microsatellite alleles near Fbn-1 gene were found associated with diffuse
scleroderma. In TSK/+ mice, which develop a scleroderma-like syndrome, the Fbn-1 gene
exhibits an inframe duplication of exons 17–40. In this study, we report that the synthesis …
and it is a major component of microfibrils embedded in the core of elastic fibers. In humans,
mutations or deletions of the Fbn-1 gene are associated with several genetic diseases. In
addition, several microsatellite alleles near Fbn-1 gene were found associated with diffuse
scleroderma. In TSK/+ mice, which develop a scleroderma-like syndrome, the Fbn-1 gene
exhibits an inframe duplication of exons 17–40. In this study, we report that the synthesis …
Fibrillin-1 (Fbn-1) is a ubiquitous protein present in the extracellular matrix of various organs and it is a major component of microfibrils embedded in the core of elastic fibers. In humans, mutations or deletions of the Fbn-1 gene are associated with several genetic diseases. In addition, several microsatellite alleles near Fbn-1 gene were found associated with diffuse scleroderma. In TSK/+mice, which develop a scleroderma-like syndrome, the Fbn-1 gene exhibits an inframe duplication of exons 17–40. In this study, we report that the synthesis and secretion of wild-type Fbn-1 in TSK/+is higher than that of the mutated Fbn-1 protein excluding the possibility that TSK genetic defect is due to a loss of the wild allele. We also demonstrate for the first time that TGF-β, which plays a crucial role in skin fibrosis, binds to both wild-type and mutated Fbn-1. The amount of bound TGF-β was higher in mutated than wild-type Fbn-1 and appears related to the number of TGF-β binding motifs.
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