目的应用荧光染料C FD A-SE(C arboxyfluorescein diacetate,succinim idyl ester)染色检测氧化苦参碱(O xym atrine,O M T)对刀豆蛋白A(C on A)刺激的小鼠淋巴细胞增殖的影响。方法利用C FD A-SE染色,流式细胞术检测小鼠T淋巴细胞在多...
详细信息
目的应用荧光染料C FD A-SE(C arboxyfluorescein diacetate,succinim idyl ester)染色检测氧化苦参碱(O xym atrine,O M T)对刀豆蛋白A(C on A)刺激的小鼠淋巴细胞增殖的影响。方法利用C FD A-SE染色,流式细胞术检测小鼠T淋巴细胞在多克隆刺激剂C on A和O M T的共同作同下荧光强度的变化,并应用相关软件分析O M T对小鼠淋巴细胞增殖的影响程度。结果培养48h,流式细胞仪检测的淋巴细胞C FSE荧光强度,对照组未出现子代峰,即淋巴细胞没有增殖。C on A组明显的出现3个峰,说明C on A刺激后48h细胞出现了明显的细胞增殖,与对照组相比荧光强度减半明显。在C on A+O M T各剂量组中,高剂量组即O M T500μg/m L组,原代峰显著高于C on A组,各子代峰显著低于C on A组,但与对照组比较差异无显著性,说明O M T明显抑制了淋巴细胞的增殖,中剂量组即O M T125μg/m L组和高剂量组结果一致,说明这一剂量的O M T仍然明显抑制小鼠淋巴细胞的增值,O M T低剂量组即O M T31μg/m L组和C on A组比较差异没有显著性,和对照组比较,各代细胞荧光强度差异有显著性,即这一剂量的O M T对淋巴细胞增殖抑制作用不明显。培养72h后,各组之间荧光强度变化情况与48h的情况基本一致。经C ELLQ uest软件拟合后得到各项增殖指标显示,O M T在500?
Oligodeoxynucleotide containing unmethylated cytosine phosphate-guanosine motif(CpG ODN) may induce high expression of CD80, CD86, CD83, HLA I and HLAⅡ molecules on dendritic cells(DC) and stimulate DC to produce hig...
详细信息
Oligodeoxynucleotide containing unmethylated cytosine phosphate-guanosine motif(CpG ODN) may induce high expression of CD80, CD86, CD83, HLA I and HLAⅡ molecules on dendritic cells(DC) and stimulate DC to produce high level of IL-6, IL-12, TNF-α and IFN-α. CpG ODN is demonstrated in vivo to be a very potent adjuvant for Th1 cells, regulating Th0 cells to develop toward Th1 cells. Its role for DC is characteristics of CpG ODN sequence specificity and species specificity. CpG ODN is, at present, considered as a pathogen associated molecular pattern which binds its specific receptor,Toll-like receptor 9,then functions through TLR/IL-1R signaling pathway. It may represent a new therapeutic drug for broad applications in infectious disease, autoimmune disease, allergy and cancer therapy.
暂无评论