Altered trafficking and epithelial cell polarity in disease.
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abstract
Establishment and maintenance of a polarized epithelium relies on the integration of signaling cascades, acquisition of specialized trafficking circuits and establishment of a unique cytoarchitecture. Defects in any of these processes can adversely affect cell polarity and cause defects in specific organs and systemic disease. Mutations that disrupt the proper transport of individual plasma membrane proteins, or inactivate components of the epithelial-specific trafficking machinery, have severe functional consequences. Links between renal diseases and defects in trafficking, differentiation or signaling, highlight the delicate balance between these parameters which, when altered, precipitates a loss of renal function.
