JCB logo
Avanti Polar Lipids, Inc.
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

This Article
Right arrow Full Text
Right arrow Full Text (PDF, 498K)
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 Sullivan, T.
Right arrow Articles by Burke, B.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Sullivan, T.
Right arrow Articles by Burke, B.
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
© The Rockefeller University Press, 0021-9525/1999/11/913/ $5.00
The Journal of Cell Biology, Volume 147, Number 5, November 29, 1999 913-920


Brief Report

Loss of A-type Lamin Expression Compromises Nuclear Envelope Integrity Leading to Muscular Dystrophy

Teresa Sullivana, Diana Escalante-Alcaldea, Harshida Bhattb, Miriam Anverc, Narayan Bhatc, Kunio Nagashimac, Colin L. Stewarta, and Brian Burked
a Advanced BioScience Laboratories–Basic Research Program, National Cancer Institute–Frederick Cancer Research and Development Center, Frederick, Maryland 21702
b Hoffmann-LaRoche, Nutley, New Jersey 07110
c Science Applications International Corporation, National Cancer Institute–Frederick Cancer Research and Development Center, Frederick, Maryland 21702
d Department of Cell Biology and Anatomy, University of Calgary, Faculty of Medicine, Calgary, Canada T2N 4N1

Correspondence to: Colin L. Stewart, Laboratory of Cancer and Developmental Biology, ABL-Basic Research Program, NCI-FCRDC, P.O. Box B, Frederick, MD 21702. Tel:(301) 846-1755 Fax:301-846-7117 E-mail:stewartc{at}mail.ncifcrf.gov.

The nuclear lamina is a protein meshwork lining the nucleoplasmic face of the inner nuclear membrane and represents an important determinant of interphase nuclear architecture. Its major components are the A- and B-type lamins. Whereas B-type lamins are found in all mammalian cells, A-type lamin expression is developmentally regulated. In the mouse, A-type lamins do not appear until midway through embryonic development, suggesting that these proteins may be involved in the regulation of terminal differentiation. Here we show that mice lacking A-type lamins develop to term with no overt abnormalities. However, their postnatal growth is severely retarded and is characterized by the appearance of muscular dystrophy. This phenotype is associated with ultrastructural perturbations to the nuclear envelope. These include the mislocalization of emerin, an inner nuclear membrane protein, defects in which are implicated in Emery-Dreifuss muscular dystrophy (EDMD), one of the three major X-linked dystrophies. Mice lacking the A-type lamins exhibit tissue-specific alterations to their nuclear envelope integrity and emerin distribution. In skeletal and cardiac muscles, this is manifest as a dystrophic condition related to EDMD.

Key Words: emerin, muscular dystrophy, nuclear envelope, lamins


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 Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:



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