Artificial antigen-presenting cells plus IL-15 and IL-21 efficiently induce melanoma-specific cytotoxic CD8+ CD28+ T lymphocyte responses
Asian Pacific Journal of Tropical Medicine
;
(12): 467-472, 2013.
Artigo
em Inglês
| WPRIM
| ID: wpr-820019
ABSTRACT
OBJECTIVE@#To develop a novel artificial antigen-presenting system for efficiently inducing melanoma-specific CD8(+) CD28(+) cytotoxic T lymphocyte (CTL) responses.@*METHODS@#Cell-sized Dynabeads® M-450 Epoxy beads coated with H-2K(b) Ig-TRP2180-188 and anti-CD28 antibody were used as artificial antigen-presenting cells (aAPCs) to induce melanoma-specific CD8(+)CD28(+) CTL responses with the help of IL-21 and IL-15. Dimer staining, proliferation, ELISPOT, and cytotoxicity experiments were conducted to evaluate the frequency and activity of induced CTLs.@*RESULTS@#Dimer staining demonstrated that the new artificial antigen-presenting system efficiently induced melanoma TRP2-specific CD8(+)CD28(+)CTLs. Proliferation and ELISPOT assays indicated that the induced CTLs rapidly proliferate and produce increased IFN- γ under the stimulation of H-2K(b) Ig-TRP2-aAPCs, IL-15, and IL-21. In addition, cytotoxicity experiments showed that induced CTLs have specific killing activity of target cells.@*CONCLUSIONS@#The new artificial antigen-presenting system including aAPCs plus IL-21 and IL-15 can induce a large number of antigen-specific CD8(+) CD28(+) CTLs against the melanoma. Our study provides evidence for a novel adoptive immunotherapy against tumors.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fragmentos de Peptídeos
/
Terapêutica
/
Portadores de Fármacos
/
Linfócitos T Citotóxicos
/
Química
/
Interleucinas
/
Interferon gama
/
Antígenos CD28
/
Linfócitos T CD8-Positivos
/
Interleucina-15
Limite:
Animais
Idioma:
Inglês
Revista:
Asian Pacific Journal of Tropical Medicine
Ano de publicação:
2013
Tipo de documento:
Artigo
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