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为了构建稳定表达犬信号淋巴细胞激活因子(SLAM)的MDCK细胞系,该研究从犬外周血淋巴细胞中克隆了犬瘟热病毒(Canine distemper virus,CDV)细胞受体SLAM基因,将鉴定正确的SLAM基因插入到高效真核表达载体pcDNA3.1(+)中.采用脂质体转染的方式将重组质粒pcDNA3.1/SLAM转染到MDCK细胞中,采用G418加压筛选及有限稀释法克隆,获取稳定表达SLAM的MDCK细胞株.结果表明,成功构建了SLAM的真核表达载体pcDNA3.1/SLAM,并通过G418筛选获得了稳定表达SLAM的细胞系MDCK. 相似文献
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犬瘟热病毒细胞受体研究进展 总被引:1,自引:1,他引:0
犬瘟热病毒是一种引起犬类、毛皮动物、野生动物和部分海洋哺乳动物发生多系统感染的病毒性传染病。犬瘟热的宿主范围和组织嗜性主要由其感染动物的细胞表面受体决定。目前,已经确认的犬瘟热受体有信号淋巴细胞激活因子。为了更好地对犬瘟热病毒的受体进行研究,就当前犬瘟热病毒的受体研究进行综述。 相似文献
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肥大细胞来源于骨髓的多向性造血干细胞,其生长和分化受细胞因子和(或)微环境的调节。肥大细胞分结缔组织型和粘膜组织型。成熟的肥大细胞含有异染颗粒,并有脱颗粒作用。 相似文献
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[Objective] The aim of this study was to lay a foundation for obtaining effective traditional Chinese medicine preparations controlling chicken colibacillosis. [Method] With the western medicine Lomefloxacin Hydrochloride and Sodium Chloride Injection as the control, drug sensitivity tests of 15 single traditional Chinese herbs and seven self-made Chinese herbal compounds were conducted. Subsequently, the single traditional Chinese herbs presenting good in vitro antibacterial effects against Escherichia coli and all the seven compounds were given to the chicks artificially infected with E.coli to observe their efficacies. [Result] The results of drug sensitivity tests showed that all the 15 traditional Chinese herbs had certain antibacterial effect against E.coli, among which aloe, pomegranate rind and radix sanguisorbae were the best. Compound 1, 2 and 5 had good antibacterial effects in vitro. By in vivo test, traditional Chinese medicines showed superior efficacies on infected chicks than western medicine, and compound 1 and 2 performed well. [Conclusion] Traditional Chinese medicine preparations are good at controlling Chicken colibacillosis, but their bacteriostasis mechanism in vivo was different with that in vitro. 相似文献
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