六种人癌细胞系裸小鼠移植瘤转移的研究

人癌裸小鼠移植瘤是目前最接近人类肿瘤的人体外整体实验模型,但移植后能否保持其原浸润转移的恶性生物学行为,研究结果意见不一。七十年代认为人癌裸鼠皮下移植多呈“良性”局限性生长,不发生或罕见转移。八十年代以来,有人癌裸鼠移植瘤转移的报道.并研究影响人癌裸鼠移植瘤转移     

裸小鼠人胃癌原位移植模型的浸润转移特征

目的：建立裸小鼠人胃癌原位移植模型并观察其浸润转移特征。方法：BALB／C-nu／nu裸小鼠12只，以SGC-7901人胃癌细胞株裸鼠皮下移植瘤为材料，通过手术将瘤组织块移植到裸小鼠胃壁，待动物自然灏临死亡时进行系统解剖。结果：原位移植瘤全都成功，且所有动物均出现局部浸润及淋巴结转移，肝脏转移率为66．7％，50“的荷瘤鼠发生腹水，肿瘤晚期与周围脏器发生粘连，荷瘤鼠死于全身衰竭，中位数生存期为18周。结论：裸小鼠人胃癌席位模型的浸润转移特性接近临床病人，是研究人胃癌浸润转移的理想手段。     

裸小鼠体内人肝癌常位移植模型的研究

人肿瘤常位移植模型及研究肿瘤的重要方法，笔者用人肝癌裸鼠异位移植瘤株ＬＴＮＭ４，首先于１９９１年７月５日建立成功裸小鼠常位移植瘤模型。移植成功率９７．８％（８９／９１）。该模型保持了人肝癌的组织学主分泌代谢功能。应用于抗癌物肝靶向制剂的抑瘤作用研究中，显示常位移植瘤优于异位移植瘤，解决了抗肝癌靶向制剂应用研究的难题，为原发性肝癌的研究建立了最佳模型。     

人卵巢小细胞癌裸小鼠移植瘤细胞超微结构研究

对我所建立的人体卵巢小细胞癌裸小鼠移植瘤模型的各代移植瘤组织进行超微结构观察。发现除光镜原已看到的大、小细胞外,尚有第三种细胞。后者有核畸变,呈多形性等特征,一般大小介于大、小细胞之间,故名中间细胞。分析了三种细胞在超微结构上之异同,并讨论它们之间可能存在的关系。     

人食管鳞状细胞癌裸小鼠移植瘤模型的研究

将1例人食管癌手术切除组织移植于NIH裸小鼠皮下，建立了人食管鳞状细胞癌裸小鼠移植瘤模型（Eca910709），已传25代，历时2年余传代移植成功率100％。该移植瘤病理组织学的结构与原人体肿瘤的形态相似．电镜形态属鳞状细胞癌。用地高辛标记的Alu探针及DNA－DNA原位杂交方法，证实移植癌中有Alu序列存在，表明移植瘤来源于人类组织。该移植瘤的建立将有助于食管癌病因、发病机理及治疗的研究．     

金龙蛇方对人胃癌MKN-45裸小鼠原位移植瘤生长转移及多种粘附分子蛋白表达的影响

目的:通过观察金龙蛇方及拆方对裸鼠人胃癌模型中转移和多种相关粘附分子表达的影响,探讨其抗胃癌转移的机制。方法:50只动物随机分为消痰组、散结组、金龙蛇组、5Fu组和对照组,建立人胃癌MKN45裸鼠原位种植模型,造模后第3天开始给药,对照组给予生理盐水0.2mL/d,腹腔注射,5Fu组给予5Fu稀释液0.2mL/周,腹腔注射,中药组分别给予消痰方、散结方、金龙蛇方0.2mL/d灌胃。第6周实验结束,观察肿瘤生长及转移情况,肝脏称质量。瘤组织及转移脏器行免疫组化检测Ecad、CD44v6、GMP140、ICAM1等蛋白的表达。结果:金龙蛇方及拆方可以明显抑制裸鼠人胃癌MKN45原位种植瘤的生长,减少肝脏转移,不同程度下调肿瘤细胞CD44v6、GMP140蛋白的表达。结论:金龙蛇方可以下调多种异质性粘附分子蛋白的表达,可能是其抗胃癌转移的机制之一。     

建立裸小鼠癌原位移植模型的一种新方法

建立人胃癌裸小鼠原位移植模型，并对不同方法进行比较。方法：ＢＡＬＢ／Ｃｎｕ／ｎｕ裸小鼠１８只，随机分类一组，胃囊法组通过手术将ＳＧＣ－７９０１人胃癌组织块移植到裸小鼠胃壁缝粘膜小囊内；缝挂法组以缝挂方法作对比；第三组为对照组。待荷瘤鼠濒临死亡时进行解剖检查。结果：胃囊法组及缝挂法组原位成瘤率及局部浸润发生率均为１００％，胃囊法组肝脏转移率为６６．７％，显著Ｐ〈０．０１。高于挂法组（３３．３％），且     

人脾原发性恶性淋巴瘤裸小鼠原位移植模型的建立及生物学特性的研究

目的 建立人脾原发性恶性淋巴瘤裸小鼠原位移植模型,为探讨其发病机理和实验治疗提供工具,方法 将11例人脾原发性恶性淋巴瘤新鲜组织植入裸鼠脾裨内,观察原位移植的成瘤、移植瘤的侵袭和转移及其形态学特征（光镜、电镜、免疫组织化学）。结果 筛选出1株人脾原发性（非霍奇金B细胞性裂核细胞型）恶性淋巴瘤裸鼠原位移植模型（BFNHL－HMN－1）,已传至41代;1株人脾原发性（非霍奇金B细胞性裂核细胞型）恶性淋巴瘤裸鼠原位移植肝转移模型（LM－BFNHL－HMN－2）,已传至47代;1株2脾原发性（非霍奇金T免疫母细胞）恶性淋巴瘤裸鼠原位移植模型（TINHL－HMN－3）,已传至37代,共移植裸鼠611只,其肿瘤移植生长率、肝转移率和液氮冻存复苏成活率均为100％。BFNHL－HMN－1和TINHL－HMN－3肿瘤完全限于脾内,呈结节状生长,或伴有脾门淋巴结累及,无腹腔淋巴结和器官转移。LM－BFNHL－HMN－2肿瘤不仅限于脾脏,并有脾门淋巴结及肝转移。原位移植瘤组织经病理学、超微结构观察,流式细胞仪DNA含量测定及染色体核型的分析,表明与人脾原发性恶性淋巴瘤细胞相一致。结论 所建立的3株人脾原发性恶性淋巴瘤裸鼠原位移植模型,完整地模拟了人脾原发性恶性淋巴瘤患者的临床过程,为研究人脾原发性淋巴瘤的生物学和实验治疗提供了理想的动物模型。     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

目的 观察新城疫病毒DK/HK/817/1980(NDV D817)对裸小鼠人结肠癌移植瘤的抑制作用.方法 采用LoVo细胞株建立裸小鼠人结肠癌移植瘤模型,分别给予裸小鼠尾静脉注射PBS、氟尿嘧啶(5-Fu)以及NDV D817高、中、低3个剂量,观察不同剂量NDV D817对移植瘤的抑制作用,病理学观察NDV D817对移植瘤和肝细胞的损伤程度,流式细胞术检测肿瘤细胞的凋亡和坏死情况,酶联免疫吸附试验(ELISA)试剂盒检测荷瘤小鼠体内肿瘤坏死因子-α(TNF-α)的含量,血凝实验检测荷瘤小鼠体内活病毒量.结果 中剂量NDV D817可明显抑制移植瘤的生长,肿瘤抑制率达48.1%.NDV D817对荷瘤小鼠体重和肝脏的损伤较小,且具有诱导肿瘤细胞凋亡和诱导机体产生TNF-α的能力.荷瘤小鼠处死后只在瘤内检测到活病毒,而在血清和其他脏器中并没有检出活病毒.结论 在对裸小鼠人结肠癌移植瘤的抑制过程中,NDV D817有明显的抑瘤效果,适当剂量的NDVD817更安全有效.     

人原发性肝恶性淋巴瘤裸小鼠原位移植模型的建立

目的建立人肝原发性恶性淋巴瘤裸小鼠原位移植模型,为探讨肝恶性淋巴瘤发病机制和实验治疗提供工具。方法采用人肝原发性恶性淋巴瘤术中新鲜瘤组织块植入裸小鼠肝实质内,观察原位移植成瘤率和移植瘤的侵袭、转移,并进行形态学（光镜、电镜、免疫组织化学）、血清学、染色体核型和流式细胞分析。结果在裸小鼠体内建成了一株人肝原发性恶性淋巴瘤原位移植模型（HLBL-0102）。移植瘤的组织病理学为原发性肝恶性淋巴瘤（非霍奇金B细胞性）,免疫组织化学显示,CD19、CD20、CD45和CD79a阳性,CD3、CD7阴性,甲胎蛋白（AFP）阴性,乙型肝炎病毒表面抗原（HbsAg）阳性,乳酸脱氢酶（LDH）1267．5U／L。染色体众数范嗣55—59条;移植瘤细胞DNA指数值1．57～1．61,均为异倍体。HLBL-0102住裸鼠体内生长3年,已经传至37代,共移植裸鼠283只,其肿瘤的移植生长率和液氮冻存复苏成活牢均为100％。人原发性肝恶性淋巴瘤在裸鼠肝内自主侵袭性生长,瘤细胞侵入并破坏临近肝组织和门脉区内胆管及静脉,无其他组织、器官侵犯及远处淋巴结累及。结论HLBL-0102是首次建苞成功的人原发性肝恶性淋巴瘤裸鼠原位移植模型,完整地模拟了人原发性肝恶性淋巴瘤患者的自然临眯病理过程,为研究原发性肝恶件淋巴瘤生物学和实验治疗提供了理想的动物模型。     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.     

新城疫病毒D817对裸小鼠人结肠癌移植瘤的抑制作用

Objective To study the anti-tumor effects of Newcastle disease virus (NDV) strain D817 on human colon carcinoma model in nude mice. Methods The nude mouse model of human colon carcinoma was established by subcutaneous inoculation of human colon cancer LOVO cells. The tumor-bearing mice were given PBS, 5-Fu, high-dose NDV D817, moderate-dese NDV D817 or low-dose NDV D817 via caudal vein injection. The tumor size and weight of mice were measured. The liver damages were examined by histopathology. Apoptosis and necrosis of tumor ceils were detected by flow cytometry. The endotumoral content of TNF-α was detected using a mouse TNF-a ELISA kit. The live vires was detected by bemagglutination (HA) test. Results The moderate-dose NDV D817 inhibited the tumor growth more apparently than 5-Fu. The tumor growth inhibition rate reached to 48.1%. The liver damage and the weight change caused by NDV were less severe. NDV D817 made an increased apoptosis index and induced production of TNF-α. Live virus was not detected in important organs except in the tumor of nude mice by HA test. Conclusion In the anti-tumor process in nude mice bearing xenografts of human colon carcinoma, a suitable dose of NDV D817 is more safe and effective.