Nm23 is a kind of effective tumor metastasis suppressor genes which included two types in human:nm23-H1 and nm23-H2. Amino acid identity between nm23-H1 and nm23-H2 was 88%.In this study,using a pair of primers to fla...Nm23 is a kind of effective tumor metastasis suppressor genes which included two types in human:nm23-H1 and nm23-H2. Amino acid identity between nm23-H1 and nm23-H2 was 88%.In this study,using a pair of primers to flank the part of coding sequence of nm 23,the 5'-translated sequence was amplified by polymerase chain reaction (PCR) from human normal liver genomic DNA.A 375-base pairs clone was charactertzed,which designated pnm23-H3b.The nm23-H3b nucleotide sequence between 40 bp and 70 bp is different from nm23-H1 and nm23-H2,and other sequences have 86%and 90%identical to nm23-H1 and nm23-H2,respectively.Southern blot containing BglⅡ-digested human liver genomic DNA hybridized to the entire nm23-H3b DNA and showed three bands at 10.5,7.9 and 4.0 Kb.These data demonstrate that the third human nm23 exists possibly.Therefore,nm23 may be considered a family of closely related genes.展开更多
Objective:To study the expression of the human novel gene NM23-H1B in ovarian cancer. Methods: Totally 24 samples from patients with epithelial ovarian tumor at different clinical stages and 4 from normal ovaries were...Objective:To study the expression of the human novel gene NM23-H1B in ovarian cancer. Methods: Totally 24 samples from patients with epithelial ovarian tumor at different clinical stages and 4 from normal ovaries were examined for NM23-H1B mRNA expression by RT-PCR and Northern blot. Results: All samples expressed NM23-H1B mRNA through RT-PCR, while the level of expression in ovarian tumor was higher than that of normal ovary. The results of Northern blot showed that NM23-H1B was overexpressed in ovarian cancer while lowexpressed in normal ovary or low malignant potential (LMP). The level of expression at early stage cancer(stageⅠand Ⅱ) was higher than those in advanced cancer(stage Ⅲ and Ⅳ). In early stage carcinoma, the expression level was involved in the differentiation of tumor cell, and well-differentiated cancer expressed NM23-H1B mRNA in comparatively higher level. Conclusion: The novel gene NM23-N1B is closely correlated with the ovarian cancer.展开更多
Background and Objective Lung cancer is the leading cause of cancer death in both men and women. Tumor metastasis is an essential aspect of lung cancer progression. Nm23-H1 is
目的:观察"治癌灵"穴位贴敷联合针刺对H22移植性肝癌小鼠肿瘤转移抑制基因Nm23-H1蛋白水平表达的调节作用,探讨该疗法对肿瘤的抑制作用是否与提高Nm23-H1的表达有关。方法:选取健康雄性昆明种小鼠50只,采取完全随机分组法,依...目的:观察"治癌灵"穴位贴敷联合针刺对H22移植性肝癌小鼠肿瘤转移抑制基因Nm23-H1蛋白水平表达的调节作用,探讨该疗法对肿瘤的抑制作用是否与提高Nm23-H1的表达有关。方法:选取健康雄性昆明种小鼠50只,采取完全随机分组法,依照随机数字表法选取10只小鼠,设为正常组,余者造模,经正常饲养7天后,随机分为模型组、穴位贴敷组、针刺组、综合组,每组10只。于雄性昆明种小鼠前肢右腋皮下接种0.2 m L H22肿瘤细胞悬液进行造模。计算瘤重和小鼠肿瘤生长抑制率,采用免疫组化法检测瘤细胞中Nm23-H1的含量。结果:与模型组比较,各组均能抑制瘤体生长(P<0.05),明显改善小鼠的生存质量,且综合组优于穴位贴敷组和针刺组(P<0.05);与模型组比较,各组均能明显提高Nm23-H1蛋白表达水平(P<0.01),综合组优于穴位贴敷组和针刺组(P<0.05)。结论:"治癌灵"穴位贴敷及针刺均可提高H22移植性肝癌小鼠Nm23-H1蛋白表达水平,进而抑制癌细胞的生长及肿瘤侵袭转移,改善生存质量,且穴位贴敷联合针刺疗法疗效更佳。展开更多
文摘Nm23 is a kind of effective tumor metastasis suppressor genes which included two types in human:nm23-H1 and nm23-H2. Amino acid identity between nm23-H1 and nm23-H2 was 88%.In this study,using a pair of primers to flank the part of coding sequence of nm 23,the 5'-translated sequence was amplified by polymerase chain reaction (PCR) from human normal liver genomic DNA.A 375-base pairs clone was charactertzed,which designated pnm23-H3b.The nm23-H3b nucleotide sequence between 40 bp and 70 bp is different from nm23-H1 and nm23-H2,and other sequences have 86%and 90%identical to nm23-H1 and nm23-H2,respectively.Southern blot containing BglⅡ-digested human liver genomic DNA hybridized to the entire nm23-H3b DNA and showed three bands at 10.5,7.9 and 4.0 Kb.These data demonstrate that the third human nm23 exists possibly.Therefore,nm23 may be considered a family of closely related genes.
文摘Objective:To study the expression of the human novel gene NM23-H1B in ovarian cancer. Methods: Totally 24 samples from patients with epithelial ovarian tumor at different clinical stages and 4 from normal ovaries were examined for NM23-H1B mRNA expression by RT-PCR and Northern blot. Results: All samples expressed NM23-H1B mRNA through RT-PCR, while the level of expression in ovarian tumor was higher than that of normal ovary. The results of Northern blot showed that NM23-H1B was overexpressed in ovarian cancer while lowexpressed in normal ovary or low malignant potential (LMP). The level of expression at early stage cancer(stageⅠand Ⅱ) was higher than those in advanced cancer(stage Ⅲ and Ⅳ). In early stage carcinoma, the expression level was involved in the differentiation of tumor cell, and well-differentiated cancer expressed NM23-H1B mRNA in comparatively higher level. Conclusion: The novel gene NM23-N1B is closely correlated with the ovarian cancer.
基金supported by the following grants to Qinghua ZHOU:The Key Project of National Natural Science Foundation of China (304303 00)The Major Project of Tianjin Sci-Tech Support Programme (07SYSYS F05000)+3 种基金The Key Project of Tianjin Sci-Tech Support Programme (06YFS ZSF05300)The Building Project of Tianjin Sci-Tech Innovation Platform (07SYSYJC27900)863 National Major Projects (2006AA02A401)National Key Basic Research and Development Plan (973 Plan) program (20 07CBS914800)
文摘Background and Objective Lung cancer is the leading cause of cancer death in both men and women. Tumor metastasis is an essential aspect of lung cancer progression. Nm23-H1 is
文摘目的:观察"治癌灵"穴位贴敷联合针刺对H22移植性肝癌小鼠肿瘤转移抑制基因Nm23-H1蛋白水平表达的调节作用,探讨该疗法对肿瘤的抑制作用是否与提高Nm23-H1的表达有关。方法:选取健康雄性昆明种小鼠50只,采取完全随机分组法,依照随机数字表法选取10只小鼠,设为正常组,余者造模,经正常饲养7天后,随机分为模型组、穴位贴敷组、针刺组、综合组,每组10只。于雄性昆明种小鼠前肢右腋皮下接种0.2 m L H22肿瘤细胞悬液进行造模。计算瘤重和小鼠肿瘤生长抑制率,采用免疫组化法检测瘤细胞中Nm23-H1的含量。结果:与模型组比较,各组均能抑制瘤体生长(P<0.05),明显改善小鼠的生存质量,且综合组优于穴位贴敷组和针刺组(P<0.05);与模型组比较,各组均能明显提高Nm23-H1蛋白表达水平(P<0.01),综合组优于穴位贴敷组和针刺组(P<0.05)。结论:"治癌灵"穴位贴敷及针刺均可提高H22移植性肝癌小鼠Nm23-H1蛋白表达水平,进而抑制癌细胞的生长及肿瘤侵袭转移,改善生存质量,且穴位贴敷联合针刺疗法疗效更佳。