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黑暗链霉菌DNA同源重组系统的构建 被引量:11
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作者 朱碧银 洪文荣 +3 位作者 严绍德 朱宝泉 林玉双 封成军 《生物技术通报》 CAS CSCD 北大核心 2011年第4期162-166,共5页
以黑暗链霉菌Tt-49基因组为模板,利用PCR方法,扩增安普霉素生物合成关键基因aprF-G的上、下游序列,作为同源交换臂,并将红霉素抗性基因筛选标记及其启动子插入两交换臂之间,以温敏型质粒pKC1139为基础,构建用于阻断黑暗链霉菌Tt-49安普... 以黑暗链霉菌Tt-49基因组为模板,利用PCR方法,扩增安普霉素生物合成关键基因aprF-G的上、下游序列,作为同源交换臂,并将红霉素抗性基因筛选标记及其启动子插入两交换臂之间,以温敏型质粒pKC1139为基础,构建用于阻断黑暗链霉菌Tt-49安普霉素生物合成的重组质粒pFD8。该质粒通过E.coli ET12567/pUZ8002去甲基化修饰后,经接合转移进入黑暗链霉菌Tt-49,利用红霉素抗性筛选得到3株阳性转化子,分别命名为Tt-49 AG1、Tt-49 AG2和Tt-49 AG3。通过PCR鉴定,证明pFD8已插入黑暗链霉菌Tt-49基因组的目标位点。以亲株作对照,对3株工程菌进行红霉素抗性能力考察,发现3株工程菌的抗红霉素能力均高达1 000μg/mL以上。 展开更多
关键词 黑暗链霉菌 抗生素基因组学 同源重组 安普霉素
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Correlation analysis of gene polymorphisms and β-lactam allergy 被引量:3
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作者 Jing LI Xin-yue LIU +7 位作者 Lin-jing LI Chong-ge YOU Lei SHI Shang-di ZHANG Qian LIU Jun WANG Ze-jing LIU Ting-hong LV 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2015年第7期632-639,共8页
A total of 64 patients with β-lactam allergy and 30 control subjects were enrolled in a case-control study. This study is aimed to analyze the relationship between β-lactam allergy and 10 single nucleotide polymorph... A total of 64 patients with β-lactam allergy and 30 control subjects were enrolled in a case-control study. This study is aimed to analyze the relationship between β-lactam allergy and 10 single nucleotide polymorphisms(SNPs) in interleukin-10(IL-10), IL-13, IL-4Rα, high-affinity immunoglobulin E-receptor β chain(FcεRIβ), interferon γ receptor 2(IFNGR2), and CYP3A4, and within the Han Chinese population of Northwest China. Genotyping for the SNPs was conducted using the Sequenom Mass ARRAY platform. SPSS 17.0 was employed to analyze the statistical data and SHEsis was used to perform the haplotype reconstruction and analyze linkage disequilibrium of SNPs of IL-10 and IL-13. The results showed that the genotype distribution of CYP3A4 rs2242480/CT differed significantly between case and control groups of males(P=0.022; odds ratio(OR)=0.167, 95% confidence interval(CI): 0.032–0.867). Further analysis showed that CCA, CCG, and TAA haplotypes of IL-10 had no significant correlation in patients with β-lactam allergy. The correlation between CCT and CAC haplotypes of IL-13 and β-lactam allergy needs to be further studied. The analysis did not reveal any differences in the distribution of others gene polymorphisms between cases and controls. 展开更多
关键词 ALLERGY Β-LACTAM Interleukin(IL) PHARMACOGENOMICS Single nucleotide polymorphism(SNP)
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