Ciliary dysfunction in polycystic kidney disease: an emerging model with polarizing potential.
The majority of different cell types in the human body have a cilium, a thin rod-like structure of uniquely arranged microtubules that are encapsulated by the surface plasma membrane. The cilium originates from a basal body, a mature centriole that has migrated and docked to the cell surface. The non-motile cilia are microtubule-based organelles that are generally considered sensory structures. The purpose of this review is to discuss the practicality of the ciliary hypothesis as a unifying concept for polycystic kidney disease and to review current literature in the field of cilium biology, as it relates to mechanosensation and planar cell polarity. The polycystins and fibrocystin localization at the cilium and other subcellular localizations are discussed, followed by a hypothetical model for the cilium's role in mechanosensing, planar cell polarity, and cystogenesis.
Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, USA.
Robert J
RJ
Kolb
Surya M
SM
Nauli
D002923:Cilia / Q000473:pathology / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D007690:Polycystic Kidney Diseases / Q000235:genetics / Q000503:physiopathology*; D011956:Receptors, Cell Surface / Q000378:metabolism; D013347:Subcellular Fractions / Q000378:metabolism; D050396:TRPP Cation Channels / Q000378:metabolism
C451750:PKHD1 protein, human; D011956:Receptors, Cell Surface; D050396:TRPP Cation Channels