Please reload

Recent Posts

I'm busy working on my blog posts. Watch this space!

Please reload

Featured Posts

New Publication in Journal of Cell Biology

November 20, 2018

Fengrong Wang from the Coulombe Lab, in collaboration with, Song Chen from the Parent Lab have recently published their finding entitled "Keratin 6 regulates collective keratinocyte migration by altering cell-cell and cell-matrix adhesion" in the Journal of Cell Biology. Please read the abstract here or the full article by following the link. https://doi.org/10.1083/jcb.201712130

 

Abstract

The a and b isoforms of keratin 6 (K6), a type II intermediate filament (IF) protein, are robustly induced upon injury to interfollicular epidermis. We previously showed that complete loss of K6a/K6b stimulates keratinocyte migration, correlating with enhanced Src activity. In this study, we demonstrate that this property is cell autonomous, depends on the ECM, and results from elevated speed, enhanced directionality, and an increased rate of focal adhesion disassembly. We show that myosin IIA interacts with K6a/K6b, that its levels are markedly reduced in Krt6a/Krt6b-null keratinocytes, and that inhibiting myosin ATPase activity normalizes the enhanced migration potential of Krt6a/Krt6b-null cells. Desmoplakin, which mediates attachment of IFs to desmosomes, is also expressed at reduced levels and is mislocalized to the nucleus in Krt6a/Krt6b-null cells, correlating with defects in cell adhesion. These findings reveal that K6a/K6b modulate keratinocyte migration by regulating cell-matrix and cell-cell adhesion and highlight a role for keratins in collective cell migration.

Share on Facebook
Share on Twitter
Please reload

Follow Us

I'm busy working on my blog posts. Watch this space!

Please reload

Search By Tags
Please reload

Archive
  • Facebook Basic Square
  • Twitter Basic Square
  • Google+ Basic Square

Epithelial Homeostasis in Health and Disease

COPYRIGHT © Dr. Pierre Coulombe 2019