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Genetic differences in bone marrow-derived lymphoid lineages control susceptibility to experimental autoimmune myocarditis.

Abstract
Bone marrow (BM) transplantation has been used to study the cellular basis of genetic control of autoimmune diseases, but conclusions remain elusive due to the contradictory findings in different animal models. In the current study, we found that BM cells from myocarditis-susceptible A.SW mice can render irradiated, myocarditis-resistant B10.S recipient mice susceptible to myosin-induced myocarditis, indicating that hematopoietic cells express the genetic differences controlling susceptibility to autoimmune myocarditis. We then sought to differentiate the role of lymphoid vs nonlymphoid components of BM in the pathogenesis of myocarditis by comparing mixed chimeras receiving BM from A.SW wild-type or RAG(-/-) mice mixed with BM from B10.S wild-type mice. This experiment clearly demonstrated that T and B lymphocytes were indispensable for transferring the susceptible phenotype to disease-resistant recipients. Our findings significantly narrow the cellular expression of genetic polymorphisms controlling the EAM phenotype.
AuthorsHaiyan S Li, Davinna L Ligons, Noel R Rose, Mehmet L Guler
JournalJournal of immunology (Baltimore, Md. : 1950) (J Immunol) Vol. 180 Issue 11 Pg. 7480-4 (Jun 01 2008) ISSN: 0022-1767 [Print] United States
PMID18490748 (Publication Type: Journal Article, Research Support, N.I.H., Extramural)
Chemical References
  • Cardiac Myosins
Topics
  • Animals
  • Autoimmune Diseases (chemically induced, genetics, immunology)
  • Bone Marrow Cells (immunology)
  • Bone Marrow Transplantation (immunology)
  • Cardiac Myosins (immunology, pharmacology)
  • Cell Lineage
  • Genetic Predisposition to Disease
  • Lymphocytes (immunology)
  • Mice
  • Mice, Mutant Strains
  • Myocarditis (chemically induced, genetics, immunology)
  • Myocardium (cytology, immunology)

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