目的构建香菇C91-3 cDNA文库。方法低速离心法收集香菇C91-3菌丝体发酵液中的菌丝,提取总RNA,巢式PCR扩增5SrRNA非转录间隔区2片段并测序鉴定。纯化mRNA,以mRNA为模板进行反转录反应;产物与pBlue-Script II SK(+)载体连接,并转化E.coil ...目的构建香菇C91-3 cDNA文库。方法低速离心法收集香菇C91-3菌丝体发酵液中的菌丝,提取总RNA,巢式PCR扩增5SrRNA非转录间隔区2片段并测序鉴定。纯化mRNA,以mRNA为模板进行反转录反应;产物与pBlue-Script II SK(+)载体连接,并转化E.coil DH10B,检测库容及插入片段。结果香菇C91-3cDNA文库初始库容为7.2×106cfu,插入片段长度0.4~3.4kb,平均1.5kb。结论成功构建香菇C91-3 cDNA文库,适合用于研究香菇蛋白的编码基因。展开更多
通过对香菇C91-3转录本Unigene 24277基因的生物信息学分析,克隆表达含RCC1结构域的Unigene24277基因,并研究其抗肿瘤活性。从香菇C91-3菌丝体中提取总RNA,反转录合成c DNA,并利用Rapid Amplification of c DNA Ends(RACE)技术获得基因...通过对香菇C91-3转录本Unigene 24277基因的生物信息学分析,克隆表达含RCC1结构域的Unigene24277基因,并研究其抗肿瘤活性。从香菇C91-3菌丝体中提取总RNA,反转录合成c DNA,并利用Rapid Amplification of c DNA Ends(RACE)技术获得基因全长。NCBI数据库分析提示其含有RCC1结构域。PCR扩增RCC1结构域,将其克隆产物与p ET-32a(+)载体连接,热转化至E.coil Rosetta-gami(DE3)中诱导表达,纯化、复性后,通过MTT法研究其抗肿瘤活性。结果显示原核表达载体构建成功,重组蛋白成功诱导表达,并初步证明了重组蛋白具有抑制肿瘤细胞增殖活性的功能,为后续抗肿瘤机制的探究奠定了基础。展开更多
A new Schiff base compound (I), (E)-N'-(2-hydroxy-3-methoxybenzylidene)-3,4-dihydroxybenzohydrazide-ethanol-water (1/1/1), has been synthesized and characterized by elemental analysis, IR spectra, and single-...A new Schiff base compound (I), (E)-N'-(2-hydroxy-3-methoxybenzylidene)-3,4-dihydroxybenzohydrazide-ethanol-water (1/1/1), has been synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 7.459(4), b = 18.316(10), c = 13.638(7), β = 101.585(9)o, V = 1825.2(17)3, Z = 4, μ = 0.104 mm-1, Dc = 1.333 g/cm3, F(000) = 776, the final R = 0.0635 and wR = 0.1302 for 3216 observed reflections with I 〉 2σ(I). Another compound (Ⅱ), (E)-N'-(2,5-dimethoxybenzylidene)-3,4-dihydroxybenzohydrazide-ethanol-water (1/1/1), has been synthesized and reported before. The antibacterial activities of these two compounds against seven bacteria were first evaluated, and one compound showed considerable antibacterial activity against S. aureus.展开更多
1969年美国麻省理工学院(MIT)首倡的"本科研究机会计划"(The Undergraduate Research Opportu-nities Program,简称UROP)作为一种有效尝试,经过40年的发展与变革已成为世界诸多知名高校普遍效仿的做法。20世纪90年代以来,国内部...1969年美国麻省理工学院(MIT)首倡的"本科研究机会计划"(The Undergraduate Research Opportu-nities Program,简称UROP)作为一种有效尝试,经过40年的发展与变革已成为世界诸多知名高校普遍效仿的做法。20世纪90年代以来,国内部分高校开始秉承这一思路,实施本科生科研训练计划(StudentResearch Training Plan,简称SRTP),被普遍认为是一条培养创新人才的有效途径,展开更多
文摘通过对香菇C91-3转录本Unigene 24277基因的生物信息学分析,克隆表达含RCC1结构域的Unigene24277基因,并研究其抗肿瘤活性。从香菇C91-3菌丝体中提取总RNA,反转录合成c DNA,并利用Rapid Amplification of c DNA Ends(RACE)技术获得基因全长。NCBI数据库分析提示其含有RCC1结构域。PCR扩增RCC1结构域,将其克隆产物与p ET-32a(+)载体连接,热转化至E.coil Rosetta-gami(DE3)中诱导表达,纯化、复性后,通过MTT法研究其抗肿瘤活性。结果显示原核表达载体构建成功,重组蛋白成功诱导表达,并初步证明了重组蛋白具有抑制肿瘤细胞增殖活性的功能,为后续抗肿瘤机制的探究奠定了基础。
基金supported by the Science and Technology of Dalian city (No. 2008E11SF168)
文摘A new Schiff base compound (I), (E)-N'-(2-hydroxy-3-methoxybenzylidene)-3,4-dihydroxybenzohydrazide-ethanol-water (1/1/1), has been synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 7.459(4), b = 18.316(10), c = 13.638(7), β = 101.585(9)o, V = 1825.2(17)3, Z = 4, μ = 0.104 mm-1, Dc = 1.333 g/cm3, F(000) = 776, the final R = 0.0635 and wR = 0.1302 for 3216 observed reflections with I 〉 2σ(I). Another compound (Ⅱ), (E)-N'-(2,5-dimethoxybenzylidene)-3,4-dihydroxybenzohydrazide-ethanol-water (1/1/1), has been synthesized and reported before. The antibacterial activities of these two compounds against seven bacteria were first evaluated, and one compound showed considerable antibacterial activity against S. aureus.
文摘1969年美国麻省理工学院(MIT)首倡的"本科研究机会计划"(The Undergraduate Research Opportu-nities Program,简称UROP)作为一种有效尝试,经过40年的发展与变革已成为世界诸多知名高校普遍效仿的做法。20世纪90年代以来,国内部分高校开始秉承这一思路,实施本科生科研训练计划(StudentResearch Training Plan,简称SRTP),被普遍认为是一条培养创新人才的有效途径,