穿心莲内酯在减缓深静脉血栓形成中作用机制的研究

目的研究穿心莲内酯抑制NF-кB信号通路的作用机制。方法建立深静脉血栓的小鼠动物模型,取血栓标本,测量裸栓长度并称重。检测E-selectin、VCAM-1和Fibrin的表达,白细胞浸润密度等指标。结果应用穿心莲内酯处理的小鼠血栓E-selectin、VCAM-1、Fibrin的表达显著下降,白细胞浸润密度显著下降。结论穿心莲内酯能抑制NF-кB信号通路,进而起到显著抑制深静脉血栓的作用。

应用基因重组抗原诊断丙型肝炎研究

In order to improve the diagnostic efficiency of the hepatitis C in China, the DNA fragments of core, C33c,NS4 in Hepatitis C virus(HCV) were connected and subcloned to pET24a(+). The pET24a-CCN was highly expressed with the inducement IPTG in the E.coli BL21(DE3). In 1L bacterial culture medium,30mg purified recombinant proteins were available using His Binding Resin under denatured condition. Used as diagnostic antigen to detect the human hepatitis C by ELISA, The results showed that the 100% positive coincidence rate (66/66) and 94.5% negative coincidence rate (86/91) were obtained. To detect 46 positive HAV sera and 46 positive HBs sera, all the results were negative. At the same time, the freeze-dried recombinant antigen detects 66 HCV positive sera, all the results were positive. Therefore, the recombinant antigen was sensitivity, specialty and stability to detect hepatitis C. It was an ideal reagent to detect hepatitis C.

谷胱甘肽转硫酶多克隆抗体的制备及应用

将含有谷胱甘肽转硫酶 ( GST)基因的 p GEX质粒转入大肠杆菌 TG1后 ,在 0 .5 mmol/L异丙基硫代 - β- D-半乳糖苷 ( IPTG)诱导培养下表达了 GST,用亲和纯化得到的 GST免疫新西兰大白兔 ,获得了滴度 ( ELISA)在 2× 1 0 5以上的抗血清 ,纯化后的抗体已成功地应用于两种新的融合蛋白 GST- FLP和 GST- Pre

猴附睾特异性表达基因LCN6第5号内含子的克隆及分析

用PCR法扩增了猴LCN6基因第5号内含子区的基因组DNA片断,并将该片断克隆到T-载体中,用SouthernBlot的方法鉴定阳性克隆。经测序后与人LCN6基因的第5号内含子相比较,两者的同源性达到了87%。根据对已有小鼠,大鼠,猴及人LCN6基因第5号内含子DNA序列比较,可知在LCN6基因的进化中由于基因组DNA序列,特别是剪切位点的改变使得原本在小鼠中转录的一个转录子mLCN6β在大鼠、猴及人中不被转录。