Cellular autoreactivity against heat shock protein 60 in renal transplant patients: peripheral and graft-infiltrating responses.

Abstract:

:Autoreactivity to heat shock protein 60 (Hsp60) has been implicated in the pathogenesis and regulation of chronic inflammation, especially in autoimmune diseases. In transplantation, there is a lack of information regarding the cytokine profile and specificity of cells that recognize self-Hsp60 as well as the kinetics of autoreactivity following transplantation. We studied the cellular reactivity of peripheral and graft-infiltrating lymphocytes against Hsp60 in renal transplant patients. Cytokine production induced by this protein in peripheral blood mononuclear cells indicated a predominance of interleukin (IL)-10 during the late post-transplantation period, mainly in response to intermediate and C-terminal peptides. Patients with chronic rejection presented reactivity to Hsp60 with a higher IL-10/interferon (IFN)-gamma ratio compared to long-term clinically stable patients. Graft-infiltrating T cell lines, cocultured with antigen-presenting cells, preferentially produced IL-10 after Hsp60 stimulation. These results suggest that, besides its proinflammatory activity, autoreactivity to Hsp60 in transplantation may also have a regulatory role.

journal_name

Clin Exp Immunol

authors

Caldas C,Luna E,Spadafora-Ferreira M,Porto G,Iwai LK,Oshiro SE,Monteiro SM,Fonseca JA,Lemos F,Hammer J,Ho PL,Kalil J,Coelho V

doi

10.1111/j.1365-2249.2006.03195.x

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

66-75

issue

1

eissn

0009-9104

issn

1365-2249

pii

CEI3195

journal_volume

146

pub_type

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