Delayed assembly of desmosomes in keratinocytes with disrupted classic-cadherin-mediated cell adhesion by a dominant negative mutant

Masayuki Amagai, T. Fujimori, T. Masunaga, H. Shimizu, T. Nishikawa, N. Shimizu, M. Takeichi, T. Hashimoto

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

We examined whether classic cadherins play a role in the formation of desmosomes using a mouse keratinocyte, PAMcN390Δ cell, which shows disrupted classic-cadherin-mediated cell adhesion by introduction of a dominant-negative mutant of N-cadherin. The expression of the mutant did not alter that of endogenous E-cadherin or desmoplakin. In control cells with functional classic cadherins, we observed redistribution of desmoplakin to cell-cell borders with insertions of keratin filaments at the contact sites as soon as 2 h after calcium elevation, after an earlier event of E-cadherin translocation to the cell-cell contact sites. In contrast, in the PAMcN390Δ cells, which showed retarded translocation of E-cadherin, the redistribution of desmoplakin and the rearrangement of keratin filaments were delayed as late as 24 h after the calcium elevation. The acquisition of Nonidet P-40 insolubility of desmoplakins also was found to be delayed in the PAMcN390Δ cells. These findings indicate that the disruption of classic cadherin affected the organization of desmosomes upon calcium elevation and suggest that the proper function of classic cadherins is a prerequisite for desmosome assembly in keratinocytes.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalJournal of Investigative Dermatology
Volume104
Issue number1
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Desmosomes
Cell adhesion
Cadherins
Keratinocytes
Cell Adhesion
Desmoplakins
Keratins
Calcium
Solubility

Keywords

  • Adherens
  • Desmoplakin
  • Junction
  • Keratin
  • Pemphigus antigen

ASJC Scopus subject areas

  • Dermatology

Cite this

Delayed assembly of desmosomes in keratinocytes with disrupted classic-cadherin-mediated cell adhesion by a dominant negative mutant. / Amagai, Masayuki; Fujimori, T.; Masunaga, T.; Shimizu, H.; Nishikawa, T.; Shimizu, N.; Takeichi, M.; Hashimoto, T.

In: Journal of Investigative Dermatology, Vol. 104, No. 1, 1995, p. 27-32.

Research output: Contribution to journalArticle

Amagai, M, Fujimori, T, Masunaga, T, Shimizu, H, Nishikawa, T, Shimizu, N, Takeichi, M & Hashimoto, T 1995, 'Delayed assembly of desmosomes in keratinocytes with disrupted classic-cadherin-mediated cell adhesion by a dominant negative mutant', Journal of Investigative Dermatology, vol. 104, no. 1, pp. 27-32.
Amagai, Masayuki ; Fujimori, T. ; Masunaga, T. ; Shimizu, H. ; Nishikawa, T. ; Shimizu, N. ; Takeichi, M. ; Hashimoto, T. / Delayed assembly of desmosomes in keratinocytes with disrupted classic-cadherin-mediated cell adhesion by a dominant negative mutant. In: Journal of Investigative Dermatology. 1995 ; Vol. 104, No. 1. pp. 27-32.
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