Immunoregulation effects in vitro of the xenoprotein in combination with recombinant human granulocyte-macrophage colony stimulating factor and bacillus Calmette-Guerin / 中国实验血液学杂志
Journal of Experimental Hematology
;
(6): 1408-1412, 2008.
Article
Dans Chinois
| WPRIM
| ID: wpr-234223
ABSTRACT
This study was aimed to investigate the effects of xenogeneic antigen neu-Fc in combination with the recombinant human granulocyte-macrophage colony stimulating factor (GM-CSF) and Bacillus Calmette-Guerin (BCG) on the regulation of Th1 and Th2 immune response in vitro. The rat neu L2-S2 domain was engineered as a chimeric protein with human IgG Fc. The eukaryotic expression vector was constructed. The recombinant protein was stably expressed in CHO cells and purified by rProtein A Sepharose Fast Flow column. The recombinant protein was identified by SDS-PAGE and Western blot. Peripheral blood mononuclear cells (PBMNCs) were obtained by means of standard Ficoll separation from the blood of healthy donors. Neu-Fc-induced PBMNC proliferation was tested by MTT. The production of IL-12 and IL-10 was measured by ELISA. The results showed that the level of IL-12 decreased and IL-10 increased after PBMNCs were incubated with MCF-7 cultural supernatant. 10 nmol/L neu-Fc strongly induced the cell proliferation. Compared with neu-Fc or GM-CSF or BCG treatment alone, neu-Fc in combination with GM-CSF and BCG significantly stimulated IL-12 production and inhibited IL-10 production (p < 0.01). It is concluded that the neu-Fc can stimulate the proliferation activity of PBMNCs. neu-Fc, GM-CSF and BCG costimulation efficiently induces Th1 immune response.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Protéines recombinantes
/
Vaccin BCG
/
Facteur de stimulation des colonies de granulocytes et de macrophages
/
Cricetulus
/
Interleukine-10
/
Cellules CHO
/
Lymphocytes auxiliaires Th2
/
Lymphocytes auxiliaires Th1
/
Interleukine-12
/
Allergie et immunologie
Type d'étude:
Étude pronostique
Limites du sujet:
Animaux
/
Humains
langue:
Chinois
Texte intégral:
Journal of Experimental Hematology
Année:
2008
Type:
Article
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