Role of Regulatory T Cells in Transferable Immunological Tolerance to Bone Marrow Donor in Murine Mixed Chimerism Model
Journal of Korean Medical Science
;
: 1723-1728, 2013.
Artículo
en Inglés
| WPRIM
| ID: wpr-180667
ABSTRACT
Constructing a bone marrow chimera prior to graft transplantation can induce donor-specific immune tolerance. Mixed chimerism containing hematopoietic cells of both recipient- and donor-origin has advantages attributed from low dose of total body irradiation. In this study, we explored the mechanism of mixed chimerism supplemented with depletion of Natural Killer cells. Mixed chimerism with C57BL/6 bone marrow cells was induced in recipient BALB/c mice which were given 450 cGy of gamma-ray irradiation (n = 16). As revealed by reduced proliferation and cytokine production in mixed leukocyte reaction and ELISpot assay (24.6 vs 265.5), the allo-immune response to bone marrow donor was reduced. Furthermore, the induction of transferable immunological tolerance was confirmed by adoptive transfer and subsequent acceptance of C57BL/6 skin graft (n = 4). CD4+FoxP3+ regulatory T cells were increased in the recipient compartment of the mixed chimera (19.2% --> 33.8%). This suggests that regulatory T cells may be therapeutically used for the induction of graft-specific tolerance by mixed chimerism.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Células de la Médula Ósea
/
Células Asesinas Naturales
/
Citocinas
/
Irradiación Corporal Total
/
Trasplante de Médula Ósea
/
Trasplante de Piel
/
Linfocitos T Reguladores
/
Modelos Animales
/
Proliferación Celular
/
Quimerismo
Límite:
Animales
Idioma:
Inglés
Revista:
Journal of Korean Medical Science
Año:
2013
Tipo del documento:
Artículo
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