Details

Autor(en) / Beteiligte

• Welner, Robert
• Hastings, William
• Hill, Beth L.
• Pelsue, Stephen C.

Titel

Hyperactivation and Proliferation of Lymphocytes from the Spleens of Flaky Skin (fsn) Mutant Mice

Ist Teil von

• Autoimmunity (Chur, Switzerland), 2004-05, Vol.37 (3), p.227-235

Ort / Verlag

Abingdon: Informa UK Ltd

Erscheinungsjahr

2004

Quelle

MEDLINE

Beschreibungen/Notizen

• Mice homozygous for the flaky skin (fsn) single gene mutation have a severe hyperproliferative disease resulting in a complex phenotype, which includes widespread inflammation and autoimmunity. This study sought to characterize lymphocyte function of flaky skin mutant mice. Flaky skin lymphocytes show enhanced proliferation with in vitro mitogen stimulated spleen cells, as well as enriched splenic B- and T-cells. The production of IL-4 by fsn/fsn T-lymphocytes is increased dramatically compared with normal controls. Flaky skin lymphocytes exhibited increased responsiveness to IL-2, IL-4 and IL-7 in the absence of pre-activation, enhanced IgE production in response to ovalbumin immunization, and constitutive STAT6 activation. These data indicate that the cytokines IL-2, IL-4 and IL-7 likely contribute to the lymphocyte activation in fsn/fsn mutant mice. This lymphocyte hyperactivation may result in the development of systemic autoimmunity in fsn/fsn mutant mice.