ADPKD: A human disease altering golgi function and basolateral exocytosis in renal epithelia

Audra J. Charron, Robert Bacallao, Angela Wandinger-Ness

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Epithelial cells explanted from autosomal dominant polycystic kidney disease (ADPKD) tissue exhibit impaired exocytosis, specifically between the Golgi and basolateral membrane (Charron A, Nakamura B, Bacallo R, Wandinger-Ness A. Compromised cytoarchitecture and polarized trafficking in autosomal dominant polycystic kidney disease cells. J Cell Biol 2000; 148: 111-124.). Here the defect is shown to result in the accumulation of the basolateral transport marker vesicular stomatitis virus (VSV) G protein in the Golgi complex. Golgi complex morphology is consequently altered in the disease cells, evident in the noticeable fenestration and dilation of the cisternae. Further detailed microscopic evaluation of normal kidney and ADPKD cells revealed that ineffective basolateral exocytosis correlated with modulations in the localization of select post-Golgi transport effectors. The cytosolic coat proteins p200/myosin II and caveolin exhibited enhanced association with the cytoskeleton or the Golgi of the disease cells, respectively. Most cytoskeletal components with known roles in vesicle translocation or formation were normally arrayed with the exception of Golgi β-spectrin, which was less prevalent on vesicles. The rab8 GTPase, important for basolateral vesicle targeting, was redistributed from the perinuclear Golgi region to disperse vesicles in ADPKD cells. At the basolateral membrane of ADPKD cells, there was a notable loss of the exocyst components sec6/sec8 and an unidentified syntaxin. It is postulated that dys-regulated basolateral transport effector function precipitates the disruption of basolateral exocytosis and dilation of the ADPKD cell Golgi as basolateral cargo accumulates within the cisternae.

Original languageEnglish
Pages (from-to)675-686
Number of pages12
JournalTraffic
Volume1
Issue number8
StatePublished - 2000

Fingerprint

Autosomal Dominant Polycystic Kidney
Exocytosis
Epithelium
Kidney
Golgi Apparatus
Dilatation
Qa-SNARE Proteins
Caveolins
Myosin Type II
Membranes
Spectrin
GTP Phosphohydrolases
Capsid Proteins
Cytoskeleton
Precipitates
Epithelial Cells
Modulation
Tissue
Defects

Keywords

  • Autosomal dominant polycystic kidney disease
  • Epithelial cell
  • Polarity
  • post-Golgi transport
  • Vesicular trafficking

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Genetics
  • Molecular Biology
  • Structural Biology

Cite this

ADPKD : A human disease altering golgi function and basolateral exocytosis in renal epithelia. / Charron, Audra J.; Bacallao, Robert; Wandinger-Ness, Angela.

In: Traffic, Vol. 1, No. 8, 2000, p. 675-686.

Research output: Contribution to journalArticle

Charron, Audra J. ; Bacallao, Robert ; Wandinger-Ness, Angela. / ADPKD : A human disease altering golgi function and basolateral exocytosis in renal epithelia. In: Traffic. 2000 ; Vol. 1, No. 8. pp. 675-686.
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