Effect of agonist anti-CD40 mAb 5C11 on the induction and biological characteristics of leukemic dendritic cells / 中华血液学杂志
Chinese Journal of Hematology
;
(12): 572-575, 2003.
Artigo
em Chinês
| WPRIM
| ID: wpr-354823
ABSTRACT
<p><b>OBJECTIVE</b>To study the impact of an agonist anti-CD(40) monoclonal antibody 5C11 on the induction and biological characteristics of leukemic dendritic cells.</p><p><b>METHODS</b>Combinations of 5C11 and different cytokines were used to induce differentiation of leukemic blasts into dendritic cells. Morphology was observed by light microscopy. Surface antigens of the induced cells were analyzed by fluorescence-activated cell sorting (FACS), the yields of dendritic cell by cell counting, the levels of IL-6 and IL-12 by ELISA, T cell proliferating activity by allo-mixed lymphocyte reaction (MLR) in vitro. Allogeneic T cells were stimulated with leukemic dendritic cells and T-cell cytotoxicity was measured by MTT assay.</p><p><b>RESULTS</b>When cultured with combinations of 5C11 and different cytokines, the leukemic cells isolated from the patients could differentiate into dendritic cells. The morphology showed typical features of dendritic cells, which expressed high levels of CD(40), CD(80) and CD(86). In comparison with the original leukemia cells, the leukemic dendritic cells secreted less IL-6 but more IL-12 (P < 0.05). The leukemic dendritic cells were potent to stimulate the proliferation of allogeneic T cells, and the latter was able to lyse the original leukemia cells.</p><p><b>CONCLUSION</b>Leukemic blasts could be induced to differentiate into functional dendritic cells. It may be of great value in the adoptive immunologic therapy of leukemia.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Fisiologia
/
Terapêutica
/
Células Dendríticas
/
Leucemia
/
Diferenciação Celular
/
Imunofenotipagem
/
Interleucina-6
/
Interleucina-12
/
Antígenos CD40
Limite:
Humanos
Idioma:
Chinês
Revista:
Chinese Journal of Hematology
Ano de publicação:
2003
Tipo de documento:
Artigo
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