JCB logo
CrossRef
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

A correction to this article has been published: J. Cell Biol. 143 (1) 277
This Article
Right arrow Full Text
Right arrow Full Text (PDF, 952K)
Right arrow PPT slides of all figures
Right arrow Correction (v143,p277)
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JCB
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Honda, K.
Right arrow Articles by Hirohashi, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Honda, K.
Right arrow Articles by Hirohashi, S.
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Facebook   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

© The Rockefeller University Press, 0021-9525/1998//1383 $5.00
The Journal of Cell Biology, Volume 140, Number 6, , 1998 1383-1393


Article

Actinin-4, a Novel Actin-bundling Protein Associated with Cell Motility and Cancer Invasion



Kazufumi Honda*,{ddagger}, Tesshi Yamada*, Ritsuko Endo*, Yoshinori Ino*, Masahiro Gotoh*, Hitoshi Tsuda*, Yozo Yamada{ddagger}, Hiroshige Chiba{ddagger}, and Setsuo Hirohashi*,§

* Pathology Division, National Cancer Center Research Institute, Tokyo 104, Japan; {ddagger} Department of Oral and Maxillofacial Surgery, Tokyo Medical College, Tokyo 160, Japan; and § Hirohashi Cell Configuration Project, ERATO, Japan Scientific and Technology Corporation (JST), Tsukuba 300-26, Japan

Regulation of the actin cytoskeleton may play a crucial role in cell motility and cancer invasion. We have produced a monoclonal antibody (NCC- Lu-632, IgM, k) reactive with an antigenic protein that is upregulated upon enhanced cell movement. The cDNA for the antigen molecule was found to encode a novel isoform of nonmuscle {alpha}-actinin. This isoform (designated actinin-4) was concentrated in the cytoplasm where cells were sharply extended and in cells migrating and located at the edge of cell clusters, but was absent from focal adhesion plaques or adherens junctions, where the classic isoform (actinin-1) was concentrated. Actinin-4 shifted steadily from the cytoplasm to the nucleus upon inhibition of phosphatidylinositol 3 kinase or actin depolymerization. The cytoplasmic localization of actinin-4 was closely associated with an infiltrative histological phenotype and correlated significantly with a poorer prognosis in 61 cases of breast cancer. These findings suggest that cytoplasmic actinin-4 regulates the actin cytoskeleton and increases cellular motility and that its inactivation by transfer to the nucleus abolishes the metastatic potential of human cancers.


Abbreviations used in this paper: GST, glutathione S-transferase; HFK, human foreskin keratinocyte(s); PH, pleckstrin homology; PI3, phosphatidylinositol 3; PIP2, phosphatidylinositol 4,5-biphosphate.

K. Honda is a recipient of a Research Resident Fellowship from the Foundation for Promotion of Cancer Research. This research was supported in part by a Grant-in-Aid for the Second Term Comprehensive 10-Year Strategy for Cancer Control from the Ministry of Health and Welfare, Japan.

The nucleotide sequence data reported in this paper will appear in the GenBank/EMBL/DDBJ nucleotide sequence databases under accession number D89980.

Address all correspondence to Setsuo Hirohashi, Pathology Division, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104, Japan. Tel.: +81-3-3542-2511, ext. 4102. Fax: +81-3-3248-2737. E-mail: shirohas{at}gan2.ncc.go.jp



Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Facebook Facebook   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents