The Journal of Experimental Medicine
B-cell ELISpot from Mabtech
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

This Article
Right arrow Full Text
Right arrow Full Text (PDF, 416K)
Right arrow PPT slides of all figures
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 JEM
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 Imada, K.
Right arrow Articles by Leonard, W. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Imada, K.
Right arrow Articles by Leonard, W. J.
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?

J. Exp. Med., Volume 188, Number 11, December 7, 1998 2067-2074

Stat5b Is Essential for Natural Killer Cell-mediated Proliferation and Cytolytic Activity

By Kazunori Imada,* Eda T. Bloom,Dagger Hiroshi Nakajima,* Judith A. Horvath-Arcidiacono,Dagger Garry B. Udy,§ Helen W. Davey, and Warren J. Leonard*

From the * Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892-1674; the Dagger  Division of Cell and Gene Therapy, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892; the § Ministry of Agriculture and Forestry (Verification Agency), Te Kuiti, New Zealand; and the  Dairy Science Group, AgResearch, Ruakura, Hamilton, New Zealand

We have analyzed the immune system in Stat5-deficient mice. Although Stat5a-/- splenocytes have a partial defect in anti-CD3-induced proliferation that can be overcome by high dose interleukin (IL)-2, we now demonstrate that defective proliferation in Stat5b-/- splenocytes cannot be corrected by this treatment. Interestingly, this finding may be at least partially explained by diminished expression of the IL-2 receptor beta  chain (IL-2Rbeta ), which is a component of the receptors for both IL-2 and IL-15, although other defects may also exist. Similar to the defect in proliferation in activated splenocytes, freshly isolated splenocytes from Stat5b-/- mice exhibited greatly diminished proliferation in response to IL-2 and IL-15. This results from both a decrease in the number and responsiveness of natural killer (NK) cells. Corresponding to the diminished proliferation, basal as well as IL-2- and IL-15-mediated boosting of NK cytolytic activity was also greatly diminished. These data indicate an essential nonredundant role for Stat5b for potent NK cell-mediated proliferation and cytolytic activity.

Key words: natural killer cellsStat5bStat5ainterleukin 2interleukin 15


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