IL-10 gene modification on immature dendritic cells induces antigen-specific tolerance in experimental autoimmune myocarditis / 中华心血管病杂志
Chinese Journal of Cardiology
;
(12): 703-707, 2006.
Article
in Chinese
| WPRIM
| ID: wpr-238535
ABSTRACT
<p><b>OBJECTIVE</b>To investigate whether IL-10 gene modification on immature dendritic cells (iDC) could induce autoimmune tolerance in rat experimental autoimmune myocarditis (EAM).</p><p><b>METHODS</b>EAM was induced by cardiac myosin immunization on day 0 and day 7 in rats. A total of 2 x 10(6) mature DC (mDC), iDC, pcDNA3 transfected iDC, pcDNA3-IL-10 transfected iDC or PBS were injected intravenously at 5th immunization day. Three weeks later, echocardiography and HE staining were performed to observe the cardiac function and myocardial inflammation. Th1/Th2 cytokines were detected by ELISA and MHC-II molecules, costimulatory molecules were identified by flow cytometry. In vitro T lymphocyte proliferation assay and adoptive transfer of DCs were performed to determine the antigen specific tolerance induced by IL-10 gene modification on iDCs.</p><p><b>RESULTS</b>EAM rats treated with pcDNA3-IL-10 transfected iDC showed improved cardiac function and reduced inflammatory cells infiltration into myocardium. Moreover, lower Th1 and higher Th2-type response was induced, MHC-II and costimulatory molecules down-regulated and antigen specific immunological responses towards cardiac myosin inhibited in pcDNA3-IL-10-iDC treated EAM rats.</p><p><b>CONCLUSION</b>Treatment with IL-10 gene modified iDCs could ameliorates EAM by inducing Th2 polarization and down-regulation of MHC-II molecules and costimulatory molecule expressions.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Rats, Inbred Lew
/
Autoimmune Diseases
/
Dendritic Cells
/
Bone Marrow Cells
/
Animals, Genetically Modified
/
Genetic Therapy
/
Cell Line
/
Interleukin-10
/
Allergy and Immunology
/
Genetics
Type of study:
Prognostic study
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Cardiology
Year:
2006
Type:
Article
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