A系小鼠口饲3.3''''—二氯联苯胺的实验肿瘤观察

200只雌雄各半的8周龄A/J系小鼠分为4组,分别喂饲含3.3’-二氯联苯胺(DCB)64mg/kg,192mg/kg,576mg/kg和1,152mg/kg的饲料146天,60只雌雄各半的对照组小鼠喂饲无DCB饲料。染毒停止后1个     

抑制Src酪氨酸激酶对小鼠肺转移癌的干预作用

目的:探讨抑制Src酪氨酸激酶对小鼠肺转移癌的干预作用及其机制。方法:采用雄性严重联合免疫缺陷(SCID)小鼠,敲除NK细胞,建立肺腺癌A549细胞诱导的实验性肺转移癌动物模型。每天给予小鼠口服Src酪氨酸激酶抑制剂,研究抑制Src酪氨酸激酶对实验性肺转移癌的影响;采用免疫组化法研究抑制Src酪氨酸激酶对转移瘤中增生指数(Ki67染色)和微血管密度(CD31染色)的影响。结果:A549细胞在肺表面形成弥漫性的转移性损伤,50mg/kg/d Src酪氨酸激酶抑制剂口服治疗组肺表面比对照组光滑,肺重量明显小于对照组和10mg/kg/d治疗组(P<0.05),而10mg/kg/d治疗组的肺重量和对照组相比没有明显差别。A549细胞接种后35天,对照组小鼠体重显著下降(P<0.01),而治疗组未见小鼠体重明显下降。口服Src酪氨酸激酶抑制剂50mg/kg/d,明显减少肺组织内转移性肺损伤的数目和面积,同时显著减少Ki67阳性的增生性肿瘤细胞数(P<0.001)。结论:抑制Src酪氨酸激酶通过抑制局部增殖和浸润抑制A549细胞诱导的肺转移癌。     

丁酸钠抑制二甲基肼诱发小鼠大肠癌的实验研究

背景与目的:体外研究证实丁酸钠能促进多种肿瘤细胞分化,抑制细胞生长,诱导细胞凋亡。本研究给予小鼠直肠内灌注丁酸钠,旨在观察丁酸钠对二甲基肼(dimethylhydrazine,DMH)诱发的昆明种小鼠大肠癌的预防作用。方法:选择昆明种小鼠为实验对象,模型组以DMH30mg/kg,皮下注射,每周一次,连续给药11周。实验组分别以1.25×10-3mol/kg、2.5×10-3mol/kg丁酸钠溶液,直肠灌注,每天一次,连续24周。分别于给药后第12周、18周和24周分3个阶段处死小鼠。观察肿瘤的发生率,以及2.5×10-3mol/kg丁酸钠灌肠组小鼠的一般状态、体重增长、肝肾功能、以及肝、肾、肺、胰腺等病理变化。结果:实验12周各组小鼠未见肿瘤发生;18周时,模型组小鼠肿瘤发生率为58.3%(7/12),1.25×10-3mol/kg丁酸钠组肿瘤发生率为25.0%(3/12),2.5×10-3mol/kg丁酸钠组肿瘤发生率为0(0/12),各组相比差异有显著性(P<0.01);实验24周结果,模型组小鼠肿瘤发生率为95.0%(19/20),1.25×10-3mol/kg丁酸钠组肿瘤发生率45.0%(9/20),2.5×10-3mol/kg丁酸钠组肿瘤发生率为15.0%(3/20),各组间有显著性差异(P<0.01)。单纯2.5×10-3mol/kg丁酸钠灌肠组和生理盐水对照组均未发现肿瘤。单纯2.5×10-3mol/kg丁酸钠灌肠组小鼠一般状态良好,体重增长及肝、肾功能均与生理盐水灌肠组无显著性差异(P>0.05),肝脏、肾脏、胰腺等重要脏器未见病理性改变。结论:丁酸钠能够抑制DMH诱发的实验性小鼠大肠癌的发生和发展,并且无明显毒副作用发生。     

川楝素对H22肝癌荷瘤小鼠的抑瘤作用

目的:建立荷瘤小鼠模型,探讨川楝素对肝癌的抑瘤作用及其机制.方法:建立H22肝癌移植瘤小鼠模型,随机分为0.9%氯化钠溶液对照组、环磷酰胺(cyclophosphamide,CTX)组(20 mg/kg)、川楝素低剂量组(0.173 mg/kg)和川楝素高剂量组(0.690 mg/kg)共4组.各组药物处理后,测量小鼠体内肿瘤大小,观察肿瘤的生长曲线;剥瘤后称重,计算小鼠的肿瘤抑制率;行肿瘤组织病理形态学及HE染色观察,透射电子显微镜观察其超微结构改变;同时,观察川楝素对荷瘤小鼠心、肝、脾、肾、胸腺及睾丸组织的影响;免疫组织化学法检测肿瘤组织内Bcl-2、Bax和Fas蛋白的表达.结果:川楝素可显著抑制小鼠体内肿瘤的生长,川楝素低剂量组(0.173 mg/kg)和高剂量组(0.690 mg/kg)的抑瘤率分别为66.23%和87.01%(P＜0.05);透射电子显微镜观察可见肿瘤组织超微结构中出现凋亡小体;HE染色显示小鼠心、肝、脾、肾及睾丸脏器形态正常,而胸腺组织中可见胸腺小叶的数量及面积减少甚至消失;免疫组织化学检测证实,小鼠肿瘤组织内Bcl-2蛋白表达下调,Bax和Fas蛋白表达上调(P＜0.05).结论:川楝素能够明显抑制小鼠移植瘤的生长,此作用可能与抑制肿瘤细胞增殖及促进肿瘤细胞凋亡有关.     

雌性激素诱发叙利亚金黄地鼠肿瘤

本文用复方己酸孕酮注射液(由己酸孕酮和戊酸雌二醇组成,EP)给雌性和雄性叙利亚金黄地鼠肌肉注射,剂量按体重折合成人的10倍,前13次为每月注射1次,以后每月注射两次,总共注射32次。 结果:EP对雌性地鼠有明显致癌作用,肿瘤发生率74.2％。主要为子宫良性肿瘤,宫颈良性和恶性肿瘤和肾上腺皮质癌。对照组无肿瘤发生,两组肿瘤发生率有非常明显的差异(P<0.005)。 EP处理的雄性地鼠肿瘤发生率为16.7％,主要为肾上腺皮质癌。对照组肿瘤发生率7.7％,为1例肝母细胞瘤,两组肿瘤发生率无明显差异。     

3.3’-二氯联苯胺诱发A/J系小鼠精原细胞染色体畸变和精子畸形观察

20只A/J系雄性小鼠分为4组,分别经口给予每公斤体重5.5mg,22.0mg和136.0mg的3.3’-二氯联苯胺(DCB)146天。停药后杀鼠用常规方法制备精原细胞染色体标本和附睾精子标本。实验结果表明实验组的小鼠精原细胞染色体畸变发生率不高于对照组(P>0.05);相邻两个高剂量组(66.0mg和     

已烯雌酚致新生鼠肺肿瘤模型的建立

背景与目的:研究已烯雌酚(diethylstilbestrol,DES)对新生ICR小鼠的致肿瘤作用,寻求建立DES致肺肿瘤模型经济有效的方法。材料与方法:ICR新生鼠,分设DES、乌拉坦(urethan,U)和U DES组。U在14d以500mg/kg腹腔注射(intraperitoneal,ip);DES分别在1d、8d、15d ip,共3次,分别以注射日龄LD50的1/7、2/7、4/7为DES低(L)、DES中(M)、DES高(H)组。至26周时剖检,观察肿瘤发生情况。计算主要脏器系数、肺肿瘤发生率和平均肿瘤结节数。结果:新生鼠DES、U DES及U各组均有明显的肺肿瘤发生。DES(L,M,H)各组的肺肿瘤发生率分别为16.7%、22.4%、43.1%;U DES(L,M,H)各组分别为70.4%、90.9%、70.8%,U组为53.1%。U DES(L,M)组肺肿瘤平均结节数高于DES(L,M)组,差异均有统计学意义(P<0.05)。结论:DES与U联合作用可致新生鼠肺肿瘤高发,可作为肺肿瘤模型建立的有效方法。     

芥菜籽对氧化偶氮甲烷诱导小鼠结直肠癌的影响

背景与目的:结直肠癌是常见的恶性肿瘤之一,在我国发病率和死亡率呈不断上升趋势.文献报道芥菜籽具有抗肿瘤的活性,本研究旨在观察在氧化偶氮甲烷(azoxymethane,AOM)诱发昆明种小鼠发生结直肠癌的过程中,通过芥菜籽(mustard seed,MS)进行饮食干预能否预防肿瘤的发生.方法:选择6周龄昆明种雌性小鼠,随机分为AOM组、AOM+5%MS干预组、AOM+10%MS干预组和正常对照组.小鼠皮下注射AOM(10 mg/kg体质量),每周1次,连续3周.32周时颈椎脱臼处死小鼠,分离结直肠,用预冷的0.9%NaCl溶液冲洗肠内容物.观察记录各组小鼠有无肿瘤发生及发生数目、大小和位置,计算肿瘤发生率.结果:正常对照组小鼠未发现肿瘤,AOM模型组小鼠结直肠肿瘤发生率为86.7%,5%MS干预组及10%MS干预组小鼠结直肠肿瘤发生率分别为60.0%和41.7%,与模型组相比差异均有统计学意义(P＜0.05).AOM模型组小鼠荷瘤数为(2.2±1.2)个,而5%MS干预组和10%MS干预组小鼠荷瘤数分别为(1.1±1.1)个和(0.7±0.9)个,与AOM模型组相比差异均有统计学意义(P＜0.05).结论:通过芥菜籽饮食干预能够抑制UAOM诱导的小鼠结直肠癌的发生发展,可进一步用于结直肠癌防治的研究.     

1,2-二甲基-3-羟基-4-吡啶酮遗传毒性的研究

背景与目的:研究1,2-二甲基-3-羟基-4-吡啶酮(DHPO)的急性毒性及不同剂量、不同时间的遗传毒性.材料与方法:采用昆明种小鼠,先进行LD50试验,然后对高(1/2 LD50)、中(1/4 LD50)、低(1/8 LD50)DHPO剂量组进行外周血和骨髓微核率的观察.结果:DHPO的小鼠经口LD50为562.34 mg/kg.外周血和骨髓微核试验显示,1/8 LD50(70 mg/kg)组、1/4 LD50(140 mg/kg)组微核率与阴性对照组相比差异均无统计学意义(P＞0.05);1/2 LD50(280 mg/kg)组微核率高于阴性对照组、1/8 LD50(140 mg/kg)组和1/4 LD50组(P均＜0.05).结论:DHPO属于低毒药物,具有小鼠体内染色体畸变的遗传毒性.     

天然蛇床子素的抗肿瘤活性实验研究

背景与目的:蛇床子素是天然存在的香豆素化合物,本研究旨在检测天然蛇床子素在小鼠体外和体内的抗肿瘤活性.材料与方法:体外蛇床子素对人肺腺癌细胞A549和人肝癌细胞Bel-7402的抗肿瘤实验采用MTF法,并计算IC50;体内蛇床子素对小鼠肝癌H::实体瘤的抗肿瘤实验采用常规的抗肿瘤实验方法,用昆明种小鼠,雌雄各半,设空白对照组、顺铂(5 mg/kg)和香菇多糖(1 mg/kg)2个阳性对照组和1.11、1.67、2.50 mg/kg 3个剂量蛇床子素给药组,每组12只小鼠;用蛇床子素给小鼠灌胃后观察抑瘤率和胸腺、脾指数及肝重量变化,采用t检验进行数据的统计学处理.结果:蛇床子素体外对肺腺癌细胞A549和人肝癌细胞Bel-7402的半数抑制浓度IC50分别为:67.83、123.92 μg/ml;体内对小鼠肝癌H22实体瘤抑瘤率达62%～73%,各给药组与空白对照组比较差异均具有统计学意义(P＜0.01),脏器指数及重量与空白对照组比较差异均无统计学意义(P＞0.05),而与阳性对照顺铂组间的差异具有统计学意义(P＜0.01).结论:蛇床子素体外和体内对实验肿瘤均有明显的抗肿瘤活性,而且在给药剂量下实验动物未出现任何毒性反应.     

Tumor induction in mice administered neonatally with 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole or 3-amino-1-methyl-5H-pyrido[4,3-b]indole

3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole (Trp-P-1) or 3-amino-1-methyl-5H-pyrido[4,3-b]mdole(Trp-P-2), which is a potent mutagen from pyrolysates of tyrptophan,was given subcutaneously to neonatal ICR mice, and all animalswere observed for 1 year. Tumors of the livers and lympho-retkulartissue were induced. In the mice given Trp-P-1, the incidencesof these tumors were as follows: liver tumors in 45% of themales; malignant lymphoma in 13% of the males and in 24% ofthe females. In the mice given Trp-P-2, the incidences of livertumors in the males were dose-dependent (12.5 mg/kg, 12%; 25mg/kg, 18%), while those of malignant lymphoma varied withina range from 5 to 19%. Statistical analysis revealed that theincidences of the liver tumor in the mke given Trp-P-1 or Trp-P-2and those of lymphoma in the mice given Trp-P-1 were significantlyhigher than those of the controls. In the control mice, theincidences of tumors were as follows: malignant lymphoma in5% of the females; lung tumor in 14% of both sexes.     

Strain and sex differences in N-nitrosohexamethyleneimine carcinogenesis in NZB, NZC, NZO, and NZY mice

The carcinogenic activity of N-nitrosohexamethyleneimine [(NHEX) CAS: 932-83-2; hexahydro-1-nitroso-1H-azepine] was studied in male and female mice of the four inbred strains NZB/BlGd, NZC/BlGd, NZO/BlGd, and NZY/BlGd. A total of 158 mice received NHEX treatment; 1,338 untreated controls were used, all kept under identical laboratory conditions for their natural life-spans. Beginning at age 50 days a 1.56-mM NHEX solution (200 mg/liter) was given instead of drinking water for 8 weeks, which resulted in nearly the same total dosage of 0.7 +/- 0.04 g or 5.7 +/- 0.2 mmol NHEX/kg body weight in both sexes of all four strains. In both sexes of all four strains the main types of tumors after NHEX treatment were squamous papillomas and carcinomas of the esophagus, squamous stomach, and oropharynx and hepatocellular carcinomas. Tumors of the hepatic bile ducts, glandular stomach, and lung and malignant lymphomas were also induced by NHEX, but these tumors had a predilection for certain strains only. The incidences of other tumors characteristic of the untreated mice in each particular strain, such as tumors of the ovary in NZC, tumors of the breast in NZY, and tumors of the duodenum in NZO, were not increased significantly by NHEX treatment. The incidence of main tumor types in NHEX-treated mice varied greatly between strains, e.g., esophageal papillomas and carcinomas in 81% of male NZC versus 32% in male NZB mice. Some marked sex differences also emerged in NHEX-treated animals, e.g., the occurrence of liver angiosarcomas only in males of three strains and the 53% incidence of hepatocellular tumors in male NZY mice compared to the absence of liver tumors in female NZY mice.     

Carcinogenic activity of acrylamide in the skin and lung of Swiss-ICR mice

Doses of acrylamide ranging from 12.5 to 50 mg/kg were administered orally to female ICR-Swiss mice over 3 days for each of 2 weeks (total doses of 75, 150 and 300 mg/kg). Two weeks later some of the animals were started on a promotion schedule involving the application of 2.5 micrograms TPA/mouse 3 times weekly. Development of tumors was observed weekly in the skin, and in the lungs at 1 year. Acrylamide was found to initiate squamous cell adenoma and carcinomas in the skin and increased the yield of adenomas and carcinomas in the lung. Skin tumor development was dependent upon 12-O-tetradecanoylphorbol-13-acetate (TPA) promotion whereas lung tumor induction was not. These data extend previous observations of carcinogenic activity of acrylamide in the skin of SENCAR mice and lungs of strain A/J mice to a third strain of mouse, the ICR-Swiss.     

Lung tumor induction in strain A mice with benzotrichloride

Benzotrichloride (BTC) is used in the synthesis of benzoyl chloride and benzoyl peroxide. Epidemiological data suggest that BTC is a human lung carcinogen. In the present study, BTC was evaluated for its ability to induce lung adenomas in strain A/J mice. Four groups of 15 male and 15 female A/J mice were injected i.p. with either tricaprylin or BTC in tricaprylin three times a week for 8 weeks. BTC groups received doses totaling 1440 mg/kg, 719 mg/kg or 287 mg/kg. The mean number of lung tumors per mouse was 127 87 +/- 5.81, 43 +/- 2.44, and 17.73 +/- 1.09 in the groups treated with either 1440 mg/kg, 719 mg/kg, or 287 mg/kg, respectively. Tricaprylin-vehicle controls had a mean number of 0.46 +/- 0.15 lung tumors per mouse. Therefore, BTC produced a significant (P less than 0.001) and dose-related increase in the lung tumor response when compared to tricaprylin controls and is a potent carcinogen in the strain A mouse lung tumor bioassay.     

Chemoprevention by lipoxygenase and leukotriene pathway inhibitors of vinyl carbamate-induced lung tumors in mice

5-Leukotriene pathway inhibitors, Accolate, MK-886, and Zileuton, were evaluated as chemopreventive agents in female strain A mice. The mice were administered by injection vinyl carbamate (2 x 16 mg/kg) to induce lung tumors. Two weeks later, they received in their diet Accolate (270 and 540 mg/kg), MK-886 (30 mg/kg), Zileuton (600 and 1200 mg/kg), or combinations containing the lower concentration of two agents. Thirteen weeks later, Accolate, Zileuton (only the high concentration), and combinations of Zileuton with either Accolate or MK-886 reduced lung tumor multiplicity. At week 43, MK-886, Accolate, and Zileuton reduced lung tumor multiplicity by 37.8, 29.5, and 28.1%, respectively. They also decreased the size of the tumors and the yield of carcinomas. These results demonstrate that leukotriene inhibitors prevent lung tumors and slow the growth and progression of adenomas to carcinoma; leukotriene inhibitors warrant further consideration for potential use in humans.     

Experimental study of the effect of angiogenesis inhibitor TNP-470 on the growth and metastasis of gastric cancer in vivo

Objective: To study the effect of angiogenesis inhibitor TNP-470 on the growth and metastasis of gastric cancer in vivo. Methods: Metastatic model simulating human gastric cancer was established by orthotopic implantation of histologically intact tumor tissue into gastric wall of nude mice. TNP-470 was administrated S.C. at doses of 0 mg/kg, 15 mg/kg, 30 mg/kg, 60 mg/kg every other day for eight weeks. Ten weeks after implantation, the mice were sacrificed and the tumor size measured and the presence of metastasis recorded. The microvascular density was examined by immunohistochemical staining with anti-human factor VIII antibody. Results: Compared to the untreated controls, growth of the orthotopically implanted tumor was significantly reduced in size in the mice treated with TNP-470 with an inhibition rate of 59.9%, 77.0% and 84.9% at the dosage of 15 mg/kg, 30 mg/kg and 60 mg/kg, respectively. Tumor metastasis to the liver and peritoneum was also significantly inhibited in a dose-dependent manner. The microvascular density was also decreased significantly in the treated mice. Conclusion: Angiogenesis inhibitor TNP-470 has strong inhibitory effect both on tumor growth and metastasis of human gastric cancer in nude mice.     

Chemoprevention of mouse lung and colon tumors by suberoylanilide hydroxamic acid and atorvastatin

Atorvastatin and suberoylanilide hydroxamic acid (SAHA) were evaluated for chemoprevention of mouse lung tumors. In Experiment 1, lung tumors were induced by vinyl carbamate in strain A/J mice followed by 500 mg/kg SAHA, 60 or 180 mg/kg atorvastatin, and combinations containing SAHA and atorvastatin administered in their diet. SAHA and both combinations, but not atorvastatin, decreased the multiplicity of lung tumors, including large adenomas and adenocarcinomas with the combinations demonstrating the greatest efficacy. In Experiment 2, lung tumors were induced by 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanol in strain A/J mice followed by 180 mg/kg atorvastatin, 500 mg/kg SAHA, or both drugs administered in the diet. SAHA and the combination of both drugs, but not atorvastatin alone, decreased the multiplicity of lung tumors and large tumors, with the combination demonstrating greater efficacy. In Experiment 3, lung tumors were induced by 1,2-dimethylhydrazine in Swiss-Webster mice followed by 160 mg/kg atorvastatin, 400 mg/kg SAHA, or a combination of both drugs administered in the diet. SAHA and the combination, but not atorvastatin, decreased the multiplicity of lung tumors with the combination demonstrating greater efficacy. The multiplicity of colon tumors was decreased by SAHA, atorvastatin, and the combination, without any significant difference in their efficacy. mRNA expression analysis of lung tumor bearing mice suggested that the enhanced chemopreventive activity of the combination is related to atorvastatin modulation of DNA repair, SAHA modulation of angiogenesis, and both drugs modulating invasion and metastasis pathways. Atorvastatin demonstrated chemoprevention activity as indicated by the enhancement of the efficacy of SAHA to prevent mouse lung tumors.     

己烯雌酚对乌拉坦诱发小鼠肺肿瘤的促进作用

本文对小白鼠研究结果表明己烯雌酚单独作用（肌肉注射５ｍｇ／ｋｇ及５０ｍｇ／ｋｇ）无诱发肺肿瘤作用，当与乌拉坦（腹腔注射５００ｍｇ／ｋｇ）联合作用时，肿瘤出现率、平均肿瘤数、发癌率、恶性肿瘤比例均显著高于乌拉坦单独组，且己烯雌酚的协同作用呈现一定的剂量一反应关系，说明己烯雌酚可能是一种促癌剂。联合作用诱发的肺肿瘤以腺癌为主。     

苏拉明联合顺铂对肺腺癌小鼠移植瘤生长和转移的影响

背景与目的:新近研究发现新生血管生成在肿瘤生长、转移以及转移灶的生长过程中起重要作用。本研究观察苏拉明联合顺铂对肺腺癌细胞LA795的T739小鼠异体移植瘤生长和转移的抑制作用,并初步探讨其作用机制。方法:建立肺腺癌细胞LA795的T739小鼠异体移植瘤模型,将32只接种LA795细胞T739小鼠随机分成4组,每组8只。对照组:每只小鼠每天生理盐水0.2ml腹腔注射;顺铂组:顺铂2mg·(kg·d)-1于接种后第4、11、18天各一次;苏拉明组:苏拉明10mg·(kg·d)-1;顺铂 苏拉明组:顺铂2mg·(kg·d)-1于接种后第4、11、18天各腹腔注射一次 苏拉明10mg·(kg·d)-1。用药16日,用药中观察肿瘤生长情况,于接种后第24天处死各组小鼠,取出双肺并剥离皮下肿瘤,计算出肺转移发生率,计数各组小鼠肺表面转移结节数并算出肺表面结节转移抑制率。收集移植瘤标本行光镜观察,采用免疫组化和图像分析系统定量检测肿瘤组织微血管密度(microvesseldensity,MVD),血管内皮生长因子(vascularendothelialgrowthfactor,VEGF)及核因子-κB(nuclearfactor-kappaB,NF-κB)的表达和原位凋亡TUNEL法检测肿瘤细胞凋亡指数。结果:顺铂组、苏拉明组、顺铂加苏拉明组肿瘤的生长明显受到抑制,瘤重明显低于对照组,其抑瘤率分别为23.0%、34.4%、56.3%,而联合用药组抗瘤作用进一步增强。光镜观察顺铂组、苏拉明组、顺铂加苏拉明组肿瘤细胞出现坏死,苏拉明组和顺铂加苏拉明组肿瘤间质中血管数减少。各用药组NF-#B的表达都比对照组减少,凋亡指数比对照组明显提高,差异有显著性(P<0.01);苏拉明组及联合组与对照组和顺铂组相比肺表面转移结节数明显下降,同时肺转移发生率、皮下肿瘤MVD、VEGF的表达也明显下降,相反顺铂组对此则无明显改变。结论:苏拉明可明显抑制肺腺癌细胞在小鼠体内的生长和转移,与顺铂联用有协同作用,其作用机制可能与抑制其微血管形成、促进细胞凋亡有关。     

人参皂苷免疫纳米对人胃癌裸鼠移植瘤生长抑制机制探讨

目的研究人参皂苷免疫纳米（VEGFR3-mediated immune-nanoemulsion of ginsenoside Rg3,VRIN）对胃癌生长及其淋巴管生成的机制。方法通过外科原位移植能表达红色荧光蛋白人胃癌NUGC-4细胞的方法建立裸鼠胃癌模型,将32只Balb/c无胸腺裸鼠随机分为生理盐水组、5-氟尿嘧啶（5-FU）组（20mg/kg）、VRIN高剂量组（1mg/kg）和VRIN低剂量组（0.1mg/kg）4组,每组8只。实验终点处死所有受试裸鼠,在开放荧光系统下观察肿瘤生长及转移情况,切除移植肿瘤测瘤质量和瘤体积。免疫组织化学法检测肿瘤组织中微淋巴管密度（lymphatic microvessel density,LMVD）,Real time-PCR和免疫组织化学法检测VEGF-C蛋白和mRNA表达。结果实验终点开放体内荧光成像显示,胃癌NUGC-4细胞肿瘤生长抑制率VRIN高剂量为72.9%,低剂量组为14.5%,5-FU组为69.2%,VRIN高剂量组和5-FU组较生理盐水组瘤质量明显减轻,P〈0.001。生理盐水组淋巴转移率为87.5%（7/8）,5-FU组为50.0%（4/8）,VRIN高剂量组为12.5%（1/8）,低剂量组为37.5%（3/8）,VRIN高剂量组与生理盐水组差异有统计学意义,P=0.01。LMVD计数结果显示,生理盐水组为9.29±2.06,5-FU组为6.42±1.38,VRIN高剂量组为4.25±1.08,差异有统计学意义,F=20.895,P〈0.001;VRIN高剂量组VEGF-C蛋白表达量为0.190±0.059,与生理盐水组（0.269±0.051）差异有统计学意义,P=0.014;VEGF-C mRNA表达结果显示,生理盐水组为1.05±0.19,5-FU组为0.62±0.25,VRIN高剂量组为0.49±0.19,差异有统计学意义,F=8.190,P=0.002。结论 VRIN可抑制人胃癌细胞祼鼠移植瘤生长及淋巴结转移,并通过下调VEGF-C表达抑制肿瘤淋巴管生成。