primary cilia are everywhere, microtubule-based organelle that plays a diverse role in sensory transduction in many eukaryotic cells. They interrogate the cellular environment through chemosensing, osmosensing, and mechanosensing using receptors and ion channels in the membrane of the cilia. Little is known about the mechanical properties and structural cilia and how these properties contribute to the perception of the cilia. We probed the mechanical response of the primary cilia of kidney epithelial Human Clia Kits cells [Madin-Darby canine kidney-II (MDCK-II)], which feel the flow of fluid in the kidney tubules. We found that, in the manipulation of the optical trap, cilia Deflect by bending along their length and revolve around the effective hinge is located below the basal body. calculated bending stiffness showed weak coupling doublet microtubules. primary cilia of MDCK cell deficiency interdoublet dynein motors. However, we found that organelles displays ...
Highly conserved protein complex exocyst Organize polarized exocytosis of subsets of secretory vesicles. Previous research reported that shRNA knockdown of exocyst subunit center, Sec10 (Sec10-KD) in Madin-Darby canine kidney (MDCK) cells undisturbed primary cilia assembly and the formation of cysts in 3D. We use a three-dimensional collagen Mouse Clia Kits culture of MDCK cells to further investigate the mechanisms governing exocyst Sec10 and polarity of epithelial morphogenesis and homeostasis. Sec10-KD cyst initially showed lumen formation bothered though later shown to significantly fewer and shorter primary cilia of control. Then in cystogenesis, control cells maintained normal homeostasis, whereas cyst Sec10-KD displayed many apoptotic cells basally extruded into the collagen matrix. Sec10-KD MDCK cells are also more sensitive to triggers of apoptosis compared with the control. This phenotype is reversed by restoring the expression of the human Sec10 Sec10 shR...