Integrins in kidney disease
- PMID: 23641054
- PMCID: PMC3699832
- DOI: 10.1681/ASN.2013010012
Integrins in kidney disease
Abstract
A major hallmark of chronic kidney injury is fibrosis, which is characterized by increased accumulation of extracellular matrix components that replace the damaged tissue. Normally, the synthesis and degradation of extracellular matrix components are finely regulated; however, when matrix replacement goes unchecked, there is unwanted and irreversible tissue scarring with consequent organ damage, organ failure, and, in certain cases, death. Many factors, including cell-matrix interactions, play a role in the development of renal fibrosis. Cell-matrix interactions are made possible by integrins, a family of transmembrane receptors that, upon binding to the extracellular matrix, activate intracellular signaling. Thus, they control various cell functions, including survival, proliferation, migration, and matrix homeostasis. Genetic mutations in humans and the development of animal models lacking integrins in selective parts of the kidney have improved our understanding of molecular mechanisms and pathways controlling matrix remodeling in kidney disease. Here we outline the major integrins involved in kidney disease and some of the major molecular mechanisms whereby integrins contribute to kidney fibrosis.
Figures
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