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不同诱导条件下家蝇(Muscadomestica)三龄幼虫免疫相关基因的表达研究

, PP. 120-127

Keywords: 家蝇,诱导,先天性免疫,基因表达

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Abstract:

旨在研究在不同诱导条件下家蝇三龄幼虫先天性免疫基因的表达情况。采用冷刺激、热刺激及革兰氏阴性菌、革兰氏阳性菌和真菌注射诱导12h后提取家蝇三龄幼虫总RNA。根据GenBank公布的家蝇磷酸甘油醛脱氢酶(GAPDH)基因、攻击素(Attacin)、天蚕素(Cecropin)、防御素(Defensin)、双翅肽(Diptericin)、溶菌酶(Lysozyme)、热休克蛋白(Heatshockprotein,HSP)及家蝇抗真菌肽(MAF-1)基因序列进行RT-PCR反应,以GAPDH基因为内参照,分析在不同诱导条件下家蝇三龄幼虫先天性免疫基因的表达情况。结果显示,不同条件诱导下,家蝇免疫相关基因表达显现较大差异,微生物诱导比物理刺激诱导后家蝇免疫相关基因表达水平高;真菌、阳性菌诱导后家蝇免疫相关基因表达量最高,阴性菌次之;冷刺激诱导最低。微生物及物理刺激均能激活家蝇的免疫系统,在不同条件刺激下,家蝇幼虫机体免疫应激反应不同。

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