Microtubules Are Required for Efficient Epithelial Tight Junction Homeostasis and Restoration Journal Article

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Authors: Glotfelty, L. A.; Zahs, A.; Iancu, C.; Shen, L.; Hecht, G. A.
Article Title: Microtubules Are Required for Efficient Epithelial Tight Junction Homeostasis and Restoration
Abstract: Epithelial tight junctions are critical for creating a barrier yet allowing paracellular transport. Although it is well established that the actin cytoskeleton is critical for preserving the dynamic organization of the tight junction and maintaining normal tight junction protein recycling, contributions of microtubules to tight junction organization and function remain undefined. The aim of this study is to determine the role of microtubules in tight junction homeostasis and restoration. Our data demonstrate that occludin traffics on microtubules and that microtubule disruption perturbs tight junction structure and function. Microtubules are also shown to be required for restoring barrier function following Ca2+ chelation and repletion. These processes are mediated by proteins participating in microtubule minus end, but not plus end, directed trafficking. These studies show that microtubules participate in the preservation of epithelial tight junction structure and function and play a vital role in tight junction restoration, thus expanding our understanding of the regulation of tight junction physiology.
Journal Title: American journal of physiology.Cell physiology
Volume: 307
Issue: 3
ISSN: 1522-1563; 0363-6143
Publisher: American Journal of Physiology - Cell Physiology  
Date Published: 2014
Start Page: C245
End Page: C254
Language: ENG
DOI/URL:

ajpcell.00336.2013
Notes: CI: Copyright (c) 2014; JID: 100901225; OTO: NOTNLM; aheadofprint