The Golgi apparatus in the endomembrane-rich gastric parietal cells exist as functional stable mini-stacks dispersed throughout the cytoplasm
- Author(s)
- Gunn, PA; Gliddon, BL; Londrigan, SL; Lew, AM; van Driel, IR; Gleeson, PA;
- Details
- Publication Year 2011-12,Volume 103,Issue #12,Page 559-572
- Journal Title
- BIOLOGY OF THE CELL
- Publication Type
- Journal Article
- Abstract
- Background information. Acid-secreting gastric parietal cells are polarized epithelial cells that harbour highly abundant and specialized, H(+),K(+) ATPase-containing, tubulovesicular membranes in the apical cytoplasm. The Golgi apparatus has been implicated in the biogenesis of the tubulovesicular membranes; however, an unanswered question is how a typical Golgi organization could regulate normal membrane transport within the membrane-dense cytoplasm of parietal cells. Results. Here, we demonstrate that the Golgi apparatus of parietal cells is not the typical juxta-nuclear ribbon of stacks, but rather individual Golgi units are scattered throughout the cytoplasm. The Golgi membrane structures labelled with markers of both cis- and trans-Golgi membrane, indicating the presence of intact Golgi stacks. The parietal cell Golgi stacks were closely aligned with the microtubule network and were shown to participate in both anterograde and retrograde transport pathways. Dispersed Golgi stacks were also observed in parietal cells from H(+),K(+) ATPase-deficient mice that lack tubulovesicular membranes. Conclusions. These results indicate that the unusual organization of individual Golgi stacks dispersed throughout the cytoplasm of these terminally differentiated cells is likely to be a developmentally regulated event.
- Publisher
- PORTLAND PRESS LTD
- Keywords
- acid secretion ; Golgi apparatus ; Golgi fragmentation ; parietal cell ; retrograde transport
- Publisher's Version
- https://doi.org/10.1042/BC20110074
- Open Access at Publisher's Site
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3210445/- Terms of Use/Rights Notice
- 2011 Société Française des Microscopies and Société Biologie Cellulaire de France
Creation Date: 2011-12-01 12:00:00