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Cited by 379

The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.

Podoplanin binds ERM proteins to activate RhoA and promote epithelial-mesenchymal transition

Open access
Martín-Villar, Ester, Megías, Diego, Castel, Susanna, Yurrita, Maria Marta, Vilaró, Senén, Quintanilla, Miguel·2006·Journal of Cell Science

Abstract

Podoplanin is a small membrane mucin expressed in tumors associated with malignant progression. It is enriched at cell-surface protrusions where it colocalizes with members of the ERM (ezrin, radixin, moesin) protein family. Here, we found that human podoplanin directly interacts with ezrin (and moesin) in vitro and in vivo through a cluster of basic amino acids within its cytoplasmic tail, mainly through a juxtamembrane dipeptide RK. Podoplanin induced an epithelial-mesenchymal transition in MDCK cells linked to the activation of RhoA and increased cell migration and invasiveness. Fluorescence time-lapse video observations in migrating cells indicate that podoplanin might be involved in ruffling activity as well as in retractive processes. By using mutant podoplanin constructs fused to green fluorescent protein we show that association of the cytoplasmic tail with ERM proteins is required for upregulation of RhoA activity and epithelial-mesenchymal transition. Furthermore, expression of either a dominant-negative truncated variant of ezrin or a dominant-negative mutant form of RhoA blocked podoplanin-induced RhoA activation and epithelial-mesenchymal transition. These results provide a mechanistic basis to understand the role of podoplanin in cell migration or invasiveness.

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Crossref · 10.1242/jcs.03218

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Metadata

Authors
Martín-Villar, E., Megías, D., Castel, S., Yurrita, M. M., Vilaró, S., & Quintanilla, M.
Venue
Journal of Cell Science
Published
2006-11-01
Volume
119
Issue
21
Pages
4541-4553
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2084558110
Cited by
379
References
50
FWCI
4.67
Type
journal article
Language
en
Open access
green

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