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飞蝗羧酸酯酶基因LmCarE25的体外重组表达

Expression of the carboxylesterase gene LmCarE25 in Locusta migratoria
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摘要 羧酸酯酶(Carboxylesterase,CarE)是一类在生物中广泛分布的多功能家族酶系,在昆虫抗药性形成机制中发挥重要作用。为探讨飞蝗Locusta migratoria(Meyen)羧酸酯酶基因LmCarE25的生物学功能,本文采用荧光实时定量PCR技术进行研究,发现其在飞蝗成虫各组织部位均有表达,其中胃盲囊、翅和肌肉中表达量较低,中肠、马氏管和脂肪体表达量较高。本文尝试在大肠杆菌和昆虫细胞体外重组表达该酶,构建重组表达载体pET32a-LmCarE25,SDS-PAGE结果显示,LmCarE25可在大肠杆菌BL21(DE3)和JM109中表达,蛋白分子量约为60 ku,但为包涵体;将LmCarE25基因插入真核表达载体pFastBacHTA中,借助Bac-to-Bac体系获得重组Bacmid,以sf9细胞系作为宿主细胞表达目的蛋白,Western-Blot检测结果显示,LmCarE25获得可溶性表达。上述结果为进一步深入研究飞蝗羧酸酯酶家族功能提供了基础资料。 Carboxylesterases (CarE) are a family of multifunctional enzymes widely distributed among organism, and distinctly related to insecticide resistance. In this present study the physiological functions of the carboxylesterase member LmCarE25 was investigated from Locusta migratoria(Meyen). Real-time PCR rresults showed that the LmCarE25 was expressed in all of the adult tissues, while had lower expression levels in gastric cecum, wings and muscles, and higher expression levels in midgut, Malpighian tubules and fat body. In addition, colibacillus and insect cell expression system were used to express this enzyme in vitro. The recombinant LmCarE25 was successfully expressed by recombinant vector pET32a-LmCarE25 in E. coli BL21(DE3) and JM109, and its molecular weight was approximately 60 kDa, although it was inclusion bodies. Then LmCarE25 was subcloned into eukaryotic expression vector pFastBacHTA, the recombinant bacmid DNA was obtained by Bac-to-Bac? system, and was transfected into sf9 cells by lipid mediated transfection. Western-blot results suggested LmCarE25 expressed in soluble form at low level. These results might provide information for further study the function of carboxylesterase family of Locusta migratoria.
出处 《应用昆虫学报》 CAS CSCD 北大核心 2013年第3期659-665,共7页 Chinese Journal of Applied Entomology
基金 国家自然科学基金项目(31101463) 高等学校博士学科点专项科研基金(20111401110006 20111401120009) 公益性行业(农业)科研专项(200903021) 山西省自然科学基金(2011011033-1) 山西省青年科技基金(2012021027-1)
关键词 飞蝗 羧酸酯酶 real—time PCR 原核表达 真核表达 Locusta migratoria carboxylesterase real-time PCR prokaryotic expression eukaryotic expression
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  • 1Alon M, Alon F, Nauen R, Morin S, 2008. Organophosphates' resistance in the B-biotype of Bemisia tabaci (Hemiptera: Aleyrodidae) is associated with a pointmutation in acel -type acetylcholinesterase and overexpression of carboxylesterase. Insect Biochem. Mol. Biol. , 38(10) :940 -949.
  • 2Cui F, Lin Z, Wang HS, Liu SL, Chang H J, Reeck G, Qiao CL, Raymond M, Kang L, 2011. Two single mutations commonly cause qualitative change of nonspecific carboxylesterases in insects. Insect Biochem. Mol. Biol. , 1 (41) :1 -8.
  • 3Manohar SL, Kanamasa S, Nishina T, Kato T, Park ER, 2010. Enhanced gene expression in insect cells and silkworm larva by modified polyhedrin promoter using repeated burst sequence and very late transcriptional faetor- 1. Biotechnol. Bioeng. , 107(6):909-916.
  • 4Pan YO, Guo HL, Gao XW, 2009. Carboxylesterase activity, eDNA sequence, and gene expression in malathion susceptible and resistant strains of the cotton aphid, Aphis gossypii. Comp. Biochem. Phys. B, 152(3):266-270.
  • 5Yang ML, Zhang JZ, Zhu KY, Xuan T, Liu X J, Guo YP, Ma EB, 2009. Mechanisms of organophosphate resistance in a field population of oriental migratory locust, Locusta migratoria manilensis (Meyen). Areh Insect Biochem. , 71 (1):3-15.
  • 6Yu QY, Lu C, Li WL, Xiang ZH, Zhang Z, 2009. Annotation and expression of carboxylesterases in the silkworm, Bombyx mori. BMC Genomics, 10:553.
  • 7Zhang JZ, Zhang JQ, Yang ML, Jia QD, Guo YP, Ma EB, Zhu KY, 2011. Genomics-based approaches to screening carboxylesterase-like genes potentially involved inmalathion resistance in oriental migratory locust (Locusta migratoria manilensis). Pest Manag. Sci. , 67:183 - 190.
  • 8范翠英,冯利兴,樊金玲,果德安,刘璇.重组蛋白表达系统的研究进展[J].生物技术,2012,22(2):76-80. 被引量:55
  • 9李清,张学尧,张建珍,马恩波.东亚飞蝗羧酸酯酶基因的克隆和原核表达[J].应用昆虫学报,2012,49(3):666-672. 被引量:2
  • 10刘永平,王方海,苏志坚,李广宏,庞义.昆虫杆状病毒表达载体系统的研究及应用[J].昆虫知识,2006,43(1):1-5. 被引量:22

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