目的从基因表达谱轮廓分析不同转移潜能大肠癌细胞株的特点,探讨大肠癌亲器官转移的分子机制。方法应用Affymetrix HG-U133 Plus 2.0原位合成寡核苷酸芯片检测同一亲本分别具有不同转移潜能和转移器官亲和性的大肠癌细胞株SW620、SW480...目的从基因表达谱轮廓分析不同转移潜能大肠癌细胞株的特点,探讨大肠癌亲器官转移的分子机制。方法应用Affymetrix HG-U133 Plus 2.0原位合成寡核苷酸芯片检测同一亲本分别具有不同转移潜能和转移器官亲和性的大肠癌细胞株SW620、SW480和SW480肝转移细胞株基因表达谱差,以SW480为对照细胞株,筛查"大肠癌转移相关基因"和"亲器官转移相关基因",应用GOTM软件对基因功能进行分析。结果筛查出SW620、SW480肝转移细胞株两组共同表达的"大肠癌转移相关基因"共422个,筛查出的"亲器官转移相关基因或ESTs"3 054个。"转移相关基因&ESTs"功能主要涉及细胞代谢、细胞生理进程调节、信号传导、大分子代谢、基本代谢和代谢调节等。"亲器官转移相关基因或ESTs"的GO分析结果表明SW620、SW480肝转移细胞株在基因表达谱功能分类差异主要表现在细胞黏附、信号传导、细胞运动、调节酶活性、核酸代谢和金属离子结合等方面。结论不同转移潜能大肠癌细胞株基因表达谱存在差异,通过对基因表达谱轮廓分析,可进一步了解大肠癌转移器官亲和性的分子机制和筛查转移相关基因。展开更多
Objective： To extract tumor interstitial fluid （TIF） from MKN-45 gastric cancer which is similar to ＂muddy phlegm＂ in Chinese medicine and observe influences of MKN-45 tumor interstitial fluid （MKN-45 TIF） inte...Objective： To extract tumor interstitial fluid （TIF） from MKN-45 gastric cancer which is similar to ＂muddy phlegm＂ in Chinese medicine and observe influences of MKN-45 tumor interstitial fluid （MKN-45 TIF） intervention on metastasis of gastric cancer and on the expressions of vascular endothelial growth factor （VEGF）, kinase insert domain containing receptor （KDR）, epithelial-cadherin （E-cad）, cyclooxygenase-2 （COX-2）, intercellular adhesion molecule-1 （ICAM-1） and telomerase genes and proteins in primary tumor tissue. Methods： An MKN-45 tumor-bearing model was established in 50 nude mice. The modeled animals were equally randomized to 5 groups： the simple tumor-bearing group （model group）, the normal saline （NS） via tail vein injection （i.v.） group （NS i.v. group）, MKN-45 TIF i.v. group （TIF i.v. group）, NS intraperitoneal injection （i.p.） group （NS i.p. group）, and MKN-45 TIF i.p. group （TIF i.p. group）. The TIF and NS intervention groups received injection （i.p. or i.v.） of MKN-45 TIF or NS twice a week, 0.2 mL at a time. After 8 weeks, the primary tumors were removed, weighed and HE stained to observe tumor metastasis. The primary tumor tissues were analyzed by immunohistochemistry and real-time quantitative PCR to detect expressions of VEGF, KDR, E-cad, COX-2, ICAM-1, and telomerase genes and proteins in different groups. Results： There were significant differences in tumor weight between TIF intervention groups and the model and NS intervention groups. Tumor metastasis was observed in all 5 groups, but the tumor metastasis rate in TIF intervention groups was significantly higher than those in the model and NS intervention groups. The gene and protein expressions of gastric cancer-related factors VEGF, KDR, COX-2, ICAM-1 and telomerase were unregulated while the gene and protein expressions of E-cad were downregulated in TIF intervention groups. Conclusions： TIF promotes tumor growth, invasion and metastasis of gastric cancer. Thes展开更多
目的:观察肿瘤转移相关基因及转移抑制基因在DEN诱发大鼠肝癌组织中的表达及不同治法对其影响。方法:DEN诱发大鼠肝癌,经西药喃氟啶和不同中药治疗,取大鼠肝(含肝癌)组织抽提RNA,Affymetrix Rat 230A GeneChip检测基因表达的差异。结果...目的:观察肿瘤转移相关基因及转移抑制基因在DEN诱发大鼠肝癌组织中的表达及不同治法对其影响。方法:DEN诱发大鼠肝癌,经西药喃氟啶和不同中药治疗,取大鼠肝(含肝癌)组织抽提RNA,Affymetrix Rat 230A GeneChip检测基因表达的差异。结果:肝癌表达增加者55个,减少者8个,不同中西医治法有一定的调节作用。分析:肿瘤转移相关基因及转移抑制基因在肝癌中表达的改变和不同治法作用的差异,其具体调节途径和意义有待进一步研究。展开更多
Background and Objective The invasion and metastasis are not only the malignant markers and characteristics of lung cancer, but also the leading cause of failure to treatment and patient’
文摘目的从基因表达谱轮廓分析不同转移潜能大肠癌细胞株的特点,探讨大肠癌亲器官转移的分子机制。方法应用Affymetrix HG-U133 Plus 2.0原位合成寡核苷酸芯片检测同一亲本分别具有不同转移潜能和转移器官亲和性的大肠癌细胞株SW620、SW480和SW480肝转移细胞株基因表达谱差,以SW480为对照细胞株,筛查"大肠癌转移相关基因"和"亲器官转移相关基因",应用GOTM软件对基因功能进行分析。结果筛查出SW620、SW480肝转移细胞株两组共同表达的"大肠癌转移相关基因"共422个,筛查出的"亲器官转移相关基因或ESTs"3 054个。"转移相关基因&ESTs"功能主要涉及细胞代谢、细胞生理进程调节、信号传导、大分子代谢、基本代谢和代谢调节等。"亲器官转移相关基因或ESTs"的GO分析结果表明SW620、SW480肝转移细胞株在基因表达谱功能分类差异主要表现在细胞黏附、信号传导、细胞运动、调节酶活性、核酸代谢和金属离子结合等方面。结论不同转移潜能大肠癌细胞株基因表达谱存在差异,通过对基因表达谱轮廓分析,可进一步了解大肠癌转移器官亲和性的分子机制和筛查转移相关基因。
基金Supported by the Major Research Program Grant of the National Science Foundation(No.90709044)China Postdoctoral Science Foundation Project(No.20100480096)
文摘Objective： To extract tumor interstitial fluid （TIF） from MKN-45 gastric cancer which is similar to ＂muddy phlegm＂ in Chinese medicine and observe influences of MKN-45 tumor interstitial fluid （MKN-45 TIF） intervention on metastasis of gastric cancer and on the expressions of vascular endothelial growth factor （VEGF）, kinase insert domain containing receptor （KDR）, epithelial-cadherin （E-cad）, cyclooxygenase-2 （COX-2）, intercellular adhesion molecule-1 （ICAM-1） and telomerase genes and proteins in primary tumor tissue. Methods： An MKN-45 tumor-bearing model was established in 50 nude mice. The modeled animals were equally randomized to 5 groups： the simple tumor-bearing group （model group）, the normal saline （NS） via tail vein injection （i.v.） group （NS i.v. group）, MKN-45 TIF i.v. group （TIF i.v. group）, NS intraperitoneal injection （i.p.） group （NS i.p. group）, and MKN-45 TIF i.p. group （TIF i.p. group）. The TIF and NS intervention groups received injection （i.p. or i.v.） of MKN-45 TIF or NS twice a week, 0.2 mL at a time. After 8 weeks, the primary tumors were removed, weighed and HE stained to observe tumor metastasis. The primary tumor tissues were analyzed by immunohistochemistry and real-time quantitative PCR to detect expressions of VEGF, KDR, E-cad, COX-2, ICAM-1, and telomerase genes and proteins in different groups. Results： There were significant differences in tumor weight between TIF intervention groups and the model and NS intervention groups. Tumor metastasis was observed in all 5 groups, but the tumor metastasis rate in TIF intervention groups was significantly higher than those in the model and NS intervention groups. The gene and protein expressions of gastric cancer-related factors VEGF, KDR, COX-2, ICAM-1 and telomerase were unregulated while the gene and protein expressions of E-cad were downregulated in TIF intervention groups. Conclusions： TIF promotes tumor growth, invasion and metastasis of gastric cancer. Thes
文摘目的:观察肿瘤转移相关基因及转移抑制基因在DEN诱发大鼠肝癌组织中的表达及不同治法对其影响。方法:DEN诱发大鼠肝癌,经西药喃氟啶和不同中药治疗,取大鼠肝(含肝癌)组织抽提RNA,Affymetrix Rat 230A GeneChip检测基因表达的差异。结果:肝癌表达增加者55个,减少者8个,不同中西医治法有一定的调节作用。分析:肿瘤转移相关基因及转移抑制基因在肝癌中表达的改变和不同治法作用的差异,其具体调节途径和意义有待进一步研究。
基金supported by a grant from the key project of the National Natural Science Foundation of China (to Qinghua ZHOU)(No. 30430300)National Natural Science Foundation of China (to Qinghua ZHOU)(No. 30670922)INTERNATION Scienc and Techniquie COOPRATION PROGRAM OFCHINA (ISCP) (to Qinghua ZHOU)(No.2006DFB32330)
文摘Background and Objective The invasion and metastasis are not only the malignant markers and characteristics of lung cancer, but also the leading cause of failure to treatment and patient’
