Analysis of TCR Vbeta repertoire and cytokine gene expression in patients with idiopathic dilated cardiomyopathy

Anna Licata, Massimo Trucco, William A. Rudert, Anna Licata, Gerard J. Boyle, Catherine Haluszczak, Giuliana Trucco, Patrizia Luppi, David Finegold, Francis X. Mcgowan Jr.

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19 Citazioni (Scopus)

Abstract

Although the etiopathogenesis of idiopathic dilated cardiomyopathy (IDC) is still unclear, it is widely accepted that a complex interplay between viral infections and immune mechanisms is the basis of disease genesis. Previously, we showed that heart-infiltrating T cells of patients suffering from acute, fulminant Coxsackie virus B3+-IDC shared a preferential usage of three variable gene segments of the T cell receptor beta chain-(TCR-Vbeta) encoding families Vbeta3, 7 and 13.1. This indicated the possible presence of a superantigen-driven immune response. Here, we further investigated the IDC immunological scenario by analysing different phenotypes of heart-infiltrating cells: TCR repertoires, cytokine expression and presence of enterovirus-specific antigens. IDC patients who underwent heart transplantation at different times after the onset of heart failure were studied. A cardiac infiltrate of CD4+ and CD8+ T cells was present together with activated macrophages. Furthermore, the same Vbeta gene families, previously found to be skewed in hearts from fulminant cases of CVB3+-IDC, together with two additional Vbeta gene families, Vbeta1 and 5B, were increased. IL-1beta, IL-2, IL-6 and IFN-gamma were expressed in the myocardium while others, like IL-4 were not. In conclusion, an orchestrated complex of immune mechanisms seems to be the basis of IDC etiopathogenesis.
Lingua originaleEnglish
pagine (da-a)3-13
Numero di pagine11
RivistaJournal of Autoimmunity
Volume3
Stato di pubblicazionePublished - 2001

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All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

Cita questo

Licata, A., Trucco, M., Rudert, W. A., Licata, A., Boyle, G. J., Haluszczak, C., Trucco, G., Luppi, P., Finegold, D., & Mcgowan Jr., F. X. (2001). Analysis of TCR Vbeta repertoire and cytokine gene expression in patients with idiopathic dilated cardiomyopathy. Journal of Autoimmunity, 3, 3-13.