目的观察酵母表达重组人内皮抑素(recombinant human endostatin, rhES)对小鼠肺腺癌LA795原位肿瘤微血管生成及肺转移的抑制作用。方法对含有人内皮抑素基因的重组酵母菌株进行诱导表达及纯化rhES;将接种LA795小鼠肺腺癌细胞的T739小...目的观察酵母表达重组人内皮抑素(recombinant human endostatin, rhES)对小鼠肺腺癌LA795原位肿瘤微血管生成及肺转移的抑制作用。方法对含有人内皮抑素基因的重组酵母菌株进行诱导表达及纯化rhES;将接种LA795小鼠肺腺癌细胞的T739小鼠随机分成两组,每组各10只,于接种后第6日起给予rhES和磷酸缓冲盐液(PBS)皮下注射,每日1次,连续14 d;观察两组小鼠原位肿瘤微血管生成情况及肺部肿瘤转移情况。结果经甲醇诱导酵母转化子表达rhES,并用肝素亲和层析的方法获得纯化的rhES;治疗结束后用免疫组化方法观察两组小鼠原位肿瘤微血管密度发现rhES治疗组肿瘤微血管密度明显小于PBS对照组(P<0.01);观察两组小鼠肺部发现rhES治疗组小鼠肺部未见有明显肿瘤转移病灶,而PBS对照组小鼠肺部可见大量散在肿瘤转移病灶;两组小鼠肺湿重比较具有显著性差异(P<0.01)。结论rhES具有良好的生物学活性,显著抑制了小鼠肺腺癌LA795肿瘤血管生成,并能有效抑制肿瘤的肺部转移。展开更多
A Review Resistin, a new hormone found in the year 2001 and secreted by adipocytes, is related to type 2 diabetes and obesity. It brings some hope to solve the medical hamper of insulin resistance. The resistin discov...A Review Resistin, a new hormone found in the year 2001 and secreted by adipocytes, is related to type 2 diabetes and obesity. It brings some hope to solve the medical hamper of insulin resistance. The resistin discovery, molecule structure, function and expression, secretion regulation as well as gene polymorphism are reviewed in the article. [展开更多
The high morbidity and mortality of pulmonary carcinoma,especially in male patient,are still the unsolved problems. Recently,more and more reports showed that gene therapy could have potential application in the treat...The high morbidity and mortality of pulmonary carcinoma,especially in male patient,are still the unsolved problems. Recently,more and more reports showed that gene therapy could have potential application in the treatment of the disease. In this article,some progresses in the gene therapy of pulmonary carcinoma, such as tumor suppressor gene,drug sensitive gene,antisense gene,multi-drug resistance gene,immune gene as well as anti-angiogenesis gene, were discussed.展开更多
Herpes simplex virus-I type thymidine kinase gene is a drug sensitivity gene. It is still not very clear about how it kills tumor cells, the article reviewed in short in a few aspects such as molecular structure of TK...Herpes simplex virus-I type thymidine kinase gene is a drug sensitivity gene. It is still not very clear about how it kills tumor cells, the article reviewed in short in a few aspects such as molecular structure of TK gene, TK enzyme,bystander effect,gap junction intercellular communication,cell apoptosis and phagocytosis,inflammation and immunity reaction, and the developing direction of TK gene.展开更多
文摘目的观察酵母表达重组人内皮抑素(recombinant human endostatin, rhES)对小鼠肺腺癌LA795原位肿瘤微血管生成及肺转移的抑制作用。方法对含有人内皮抑素基因的重组酵母菌株进行诱导表达及纯化rhES;将接种LA795小鼠肺腺癌细胞的T739小鼠随机分成两组,每组各10只,于接种后第6日起给予rhES和磷酸缓冲盐液(PBS)皮下注射,每日1次,连续14 d;观察两组小鼠原位肿瘤微血管生成情况及肺部肿瘤转移情况。结果经甲醇诱导酵母转化子表达rhES,并用肝素亲和层析的方法获得纯化的rhES;治疗结束后用免疫组化方法观察两组小鼠原位肿瘤微血管密度发现rhES治疗组肿瘤微血管密度明显小于PBS对照组(P<0.01);观察两组小鼠肺部发现rhES治疗组小鼠肺部未见有明显肿瘤转移病灶,而PBS对照组小鼠肺部可见大量散在肿瘤转移病灶;两组小鼠肺湿重比较具有显著性差异(P<0.01)。结论rhES具有良好的生物学活性,显著抑制了小鼠肺腺癌LA795肿瘤血管生成,并能有效抑制肿瘤的肺部转移。
文摘A Review Resistin, a new hormone found in the year 2001 and secreted by adipocytes, is related to type 2 diabetes and obesity. It brings some hope to solve the medical hamper of insulin resistance. The resistin discovery, molecule structure, function and expression, secretion regulation as well as gene polymorphism are reviewed in the article. [
文摘The high morbidity and mortality of pulmonary carcinoma,especially in male patient,are still the unsolved problems. Recently,more and more reports showed that gene therapy could have potential application in the treatment of the disease. In this article,some progresses in the gene therapy of pulmonary carcinoma, such as tumor suppressor gene,drug sensitive gene,antisense gene,multi-drug resistance gene,immune gene as well as anti-angiogenesis gene, were discussed.
文摘Herpes simplex virus-I type thymidine kinase gene is a drug sensitivity gene. It is still not very clear about how it kills tumor cells, the article reviewed in short in a few aspects such as molecular structure of TK gene, TK enzyme,bystander effect,gap junction intercellular communication,cell apoptosis and phagocytosis,inflammation and immunity reaction, and the developing direction of TK gene.
