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| 1 | Chemoprevention of tea on colorectal cancer induced by dimethylhydrazine in Wistar rats显示文摘AIM To investigate the chemopreventiveeffects of green tea and tea pigment on 1,2-dimethylhydrazine(DMH)-induced rat colorectalcarcinogenesis.METHODS Male weaning Wistar rats wererandomly allocated into four groups.Rats in thepositive control group were given s.c.injectionof DMH,once a week for ten weeks;rats in tea-treated groups,with the same DMH treatment asin the positive group,received 2% green tea and0.1% tea pigments;rats in the negative controlgroup were given s.c.injection of the samevolume of saline as well as DMH in the positivegroup.Animals were sacrified and necropsied atthe end of week 16 and week 32.RESULTS Aberrant cryptic foci(ACF)wereformed in animals in DMH-treated groups at theend of week 16.Compared to the DMH group,green tea and tea pigments groups had less ACF(148.25 and 204.25,respectively,P<0.01).Atthe end of week 32,all rats in DMH groupdeveloped large intestinal tumors.The resultsalso showed that DMH increased labeling index(LI)of proliferating cell nuclear antigen(PCNA)of intestinal mucosa and the expression of ras-p21.However,in the tea-treated groups,PCNA-LI was significantly reduced as compared withthe positive control group(36.63 and 40.36 inthe green tea group and tea pigment group,respectively,at the end of the experiment,P<0.01).ras-p21 expression was alsosignificantly reduced(2.07 and 2.36 in the colontumors of rats in the green tea group and teapigments group,respectively at the end of theexperiment,P<0.01).Furthermore,green tea and tea pigment inhibited the expression of Bcl-2protein(2,5,1,0 and 2,4,1,0,respectively,at the end of the experiment P<0.01),andinduced expression of Bax protein(0,1,3,4and 0,1,4,3,respectively,P<0.01).CONCLUSION Chinese green tea drinkinginhibited ACF and colonic tumors formation inrats,which showed that tea had a significantchemopreventive effect on DMH-inducedcolorectal carcinogenesis.Such effects may bedue to suppression of cell proliferation andinduction of apoptosis in the intestinal crypts. | Jia XD Han C | 2000 | World Journal of Gastroenterology2000，6，5： | 21 |
| 2 | Expression of regulating apoptosis gene and apoptosis index in primary liver cancer显示文摘INTRODUCTIONProgramed cell death plays an important role in thegenesis of cancer.Certain cancer genes canregulate apoptosis.Recently,several proteins thatare structurally related to Bcl-2,an inhibitor ofapoptosis,have been identified.Therefore,novel strategies and agents that target specificmolecular pathways,as well as triggering a | Hong Yu Xu You Lin Yang Xi Li Guan Guang Song Ai Min Jiang Li Jun Shi | 2000 | World Journal of Gastroenterology2000，6，5： | 21 |
| 3 | 核因子-κB与大肠肿瘤细胞凋亡及增生的关系显示文摘目的:通过观察大肠腺瘤、腺癌和正常大肠组织中的细胞凋亡、细胞增生及其调控基因Bcl-2,Bcl-Xl,C-myc和核因子-κB的表达状态,探讨核因子-κB在大肠癌发病过程中的作用。 方法:利用DNA缺口末端标记技术和NF-κB,Bcl-2,Bcl-Xl,C-myc,PCNA蛋白免疫组化染色,原位检测30例大肠腺瘤和30例大肠腺癌中凋亡细胞、细胞增生和NF-κB,Bcl-2,Bcl-Xl,C-myc阳性表达细胞的密度和分布,以10例正常大肠组织作对照。 结果:NF-κB,Bcl-2,Bcl-Xl,C-myc蛋白的表达率和表达强度腺癌和腺瘤高于正常组织(70.9±7.2 vs 54.0±4.5 vs 30.6±2.4;78.2±8.3 vs 55.6±6.5 vs 11.0±1.9;77.3±6.5 vs 56.4±4.7vs 9.3±1.1;70.3±6.7 vs 50.1±4.2 vs 14.2±1.7,P<0.01),腺癌高于腺瘤(70.9±7.2 vs 54.0±4.5;78.2±8.3 vs 55.6±6.5;77.3±6.5 vs 56.4±4.7;70.3±6.7 vs 50.1±4.2,P<0.01)。腺瘤和腺癌中的凋亡细胞指数均高于正常组织(105.9±6.1 vs31.5±3.7 vs 10.0±1.5,P<0.01),腺瘤高于腺癌(105.9±6.1vs 31.5±3.7,P<0.01)。腺癌和腺瘤中的细胞增生高于正常组织(75.4±5.6 vs 50.7±4.9 vs 29.6±3.0,P<0.01);腺癌高于腺瘤(75.4±5.6 vs 50.7±4.9,P<0.01)。 结论:NF-κB在大肠肿瘤中促进细胞增生、抑制细胞凋亡。 | 於亮亮 于皆平 冉宗学 于红刚 | 2002 | 世界华人消化杂志2002，10，3： | 18 |
| 4 | Tumor suppressor gene p16 and Rb expression in gastric cardia precancerouslesions from subjects at a high incidence area in northern China显示文摘AIM: To further understand the molecular basis for gastriccardia carcinogenesis and to provide etiological clues.METHODS: Endoscopic mucosa biopsy and histopathologicalexaminations were made on 37 subjects from a high incidencearea for both esophageal and gastric cardia carcinomas innorthem China. All the biopsy samples were fixed in 850 mi. -1 Lalcohol and embedded in paraffin. Each block contained onepiece of tissue and was serially section at 5 μm.Immunohistochemistry (ABC) was carried out on these gastriccardia samples to determine the alterations of p16 and Rb.RESULTS: Based on the histopathlogical examinationtherewere 11 cases of chronic superficial gastritis, 12 cases ofchronic atrophic gastritis and 14 cases of dysplasia. Theimmunostaining demonstrated different levels of unclearimmunostaining of p16 and Rb in normal gastric cardiatissue and the tissues with different severity of lesions. Withthe lesions progressing, the positive immunostaining ratesfor pi6 protein had a decreasing tendency. In contrast, thepositive immunostaining rate for Rb protein had anincreasing tendency. There was a significant negativerelationship between the two parameters. Changes of p16wasCSG 11(100 % ), CAG 7(58 % ), DYS 4(29 % ) andchanges of Rb was CSG 2(18 %), CAG 8(67 %) and DYS 12(86 %), (p<0.05).CONCLUSION: The alterations of p16 and Rb protein may playa role in the early stages of gastric cardia carcinogenesis. | ZhouY GaoSS 等 | 2002 | World Journal of Gastroenterology2002，8，3： | 18 |
| 5 | Extraction and purification of TGFβ and its effect on the induction of apoptosis of hepatocytes显示文摘AIM To extract and purify the transforming growth factor β (TGF β), and to demonstrate its biological activity in vivo and induction of apoptosis of hepatocytes in vitro.METHODS TGF β was isolated from fresh bovine platelets by acid/ethanol extraction method and purified with ion exchange and gel chromatography. The extracted TGF β was injected subcutaneously to mice, and its biological activity in vivo was observed 72 hfs post-injection by HE staining. The morphological changes were observed by HE staining and the occurrence of apoptosis was detected by TUNEL method after the human normal hepatic cell line QZG was treated with 8 μg@L 1 TGFβ for 12 hrs in vitro.RESULTS The molecular mass 25 ku TGF β protein was successfully extracted. It was able to induce localized granulation tissue formation in vivo. TGF β-treated hepatocytes showed obvious apoptotic morphological changes, including the pyknosis and dense-stained nuclei and cytoplasm, the fragmentary, annular or crescent nuclei, and the 'bubbling' cytoplasm. Moreover, its apoptotic rate was significantly higher than that of the control group (P<0.05).CONCLUSION Biological active TGF β protein is extracted and purified successfully from bovine platelets, and it is able to induce the apoptosis of hepatocytes. | Xiao-Hui Si Lian-Jun Yang Research Institute of Stomatology,the Ninth People’s Hospital,Shanghai Second Medical University,Shanghai 200011,ChinaDepartment of Pathology,Fourth Military Medical University,Xi’an 710033,Shaanxi Province,China | 2001 | World Journal of Gastroenterology2001，7，4： | 15 |
| 6 | Experimental study on ultrasound-guided intratumoral injection of“Star-99”in treatment of hepatocellular carcinoma of nude mice显示文摘AIM: To investigate the anti-cancer effect and the immunological mechanism of ultrasound-guided intratumoral injection of Chinese medicine 'Star-99' in hepatocellular carcinoma (HCC) of nude mice.METHODS: Twenty-eight human hepatocellular carcinoma SMMC-7721 transplanted nude mice, 14 of hypodermically implanted and 14 of orthotopic liver transplanted, were randomly divided into three groups of which 14 mice with Star-99, and 7 with ethanol and saline respectively. Ten days after the transplantation the medicines were injected into the tumors of all the nude mice once every 5 days.After 4 injections the nude mice were killed. The diameters of three dimension of the tumors were measured by high frequency ultrasound before and after the treatment and the tumor growth indexes* (TGI) were calculated.Radioimmunoassay was used to detect the serum levels of interleukin-2 (IL-2) and tumor necrosis factor (TNF)-alpha.The tumor tissues were sent for flow cytometry (FCM) DNA analysis. Apoptotic cells were visualized by TUNEL assay.All the experiments were carried out by double blind method. zRESULTS: The TGI of Star-99 group (0.076±0.024) was markedly lower than that of the saline group (4.654±1.283)(P<0.01). It also seemed to be lower than that of the ethanol group (0.082±0.028), but not significantly different (P>0.05).Serum levels of IL-2 and TNF-α were markedly higher than those of ethanol group and saline groups (P<0.05). The mean apoptotic index (AI: percentage of TUNEL signal positive cells)in Star-99 group (48.98±5.09 %) was significantly higher than that of the ethanol group (11.95±2.24 %) and the saline group (10.48±3.85 %) (P<0.01). FCM DNA analysis showed that the appearance rate of the apoptosis peak in Srar-99group was 92.9 %, markedly higher than that of the ethanol group (14.3 %) and the saline group (0.0 %) (P<0.01).Correlation (r=0.499, P<0.05) was found between AI and serum level of TNF-α.CONCLUSION: Star-99 has an effect on the elevation of the serum levels of IL-2 and TNF-α. ft indicates that Star99 has the function of enhancing the cellular immunity and inducing cancer cell apoptosis. The correlation between AI and serum level of TNF-α indicates that the elevation of the serum of TNF-α induced by Star-99 may be an important factor in the promotion of the hepatic cancer cell apoptosis.Star-99 has strong effects on the inhibition and destruction of cancer cells. Its curative effect is as good as ethanol. Its major mechanisms can be as follows: (1) it increases the serum levels of IL-2 and TNF-α and triggers cellular immunity. (2) It can induce cancer cells apoptosis, the effective mechanism of the Star-99 is different from that of the ethanol. The mechanisms of triggering the immunologic function of the organism and inducing cell apoptosis are, of particular significance. This study will provide a new pathway of drug administration and an experimental basis for the treatment of HCC with Chinese herbal, and the study of Star-99 in the treatment of tumor is of profound significance with good prospects. | Li-Wu Lin Xiao-Dong Lin Yi-Mi He Shang-Da Gao En-Sheng Xue Department of Ultrasound,Union Hospital of Fujian Medical University,Fuzhou 350001,Fujian Province,China | 2003 | World Journal of Gastroenterology2003，9，4： | 9 |
| 7 | Effect of arsenic trioxide on human hepatoma cell line BEL-7402 cultured in vitro显示文摘AIM To study the effect of a varyingconcentrations of arsenic trioxide on humanhepatoma cell line BEL-?402 cultured in vitro andits mechanism of action.METHODS The BEL-7402 cells were treatedwith arsenic trioxide(at the concentrations of0.5,1,2 μmol/L,respectively)for 4 successivedays.The cell growth and proliferation wereobserved by cell counting and cell-growth curve.Morphologic changes were studied withelectronmicroscopy.Flow cytometry was usedto assay celI-DNA distribution and the proteinexpression of Bcl-2 and Bax detected byimmunocytochemical method.RESULTS The cell growth was significantlyinhibited by varying concentrations of arsenictrioxide as revealed by cell counting and cell-growth curve,which was dose- and time-dependent.Arsenic trioxide treatment at 0.5,1and 2 μmol/L resulted in a sub-G1 cell peak,theapoptosis rate of the control group was 9.31%and that of 0.5 μmol/L arsenic trioxide 15.53%,no significant difference was seen between thetwo.The apoptosis rates of 1,2 μmol/L arsenictrioxide were 19.10% and 21.87% respectively,which were much higher(both P<0.05).Decrease of G0/G1 phase cells and increase of Sphase cells were observed by flow cytometry,suggesting the inhibition effect of 0.5,1,2 μmol/L arsenic trioxide on BEL-7402 cell lay in the G0/G1 phase.Morphologic changes such asintact cell membrane,nucleic condensation,apoptotic body formation were seen undertransmission electronmicrescopy,whereas the0.5 mol/L arsenic trioxide-treated BEL-7402cells showed decrease of nucleocytoplasmicratio,round nucleus,well-differentiatedorganelles in the cytoplasm.The processes andmicrovilli on the cell surface of the experimentalgroups under scanning electron microscopy weresignificantly decreased.High expressions ofBcl-2 and Bax were detected in 1 and 2 μmol/Larsenic trioxide-treated cells,these were 46%,87.33% and 83.08%,95.83% respectively,among which that of Bax was more significant.Arsenic trioxide treatment at 0.5 μmol/Lresulted in a higher expression level of Bcl-2 andlower expression level of Bax,which were8.81% and 3.83% respectively,as comparedwith that of the control group(15.33%)(P1<0.01,P2<0.01).CONCLUSION Arsenic trioxide not onlyinhibited proliferation but also induced apoptosisof human hepatoma cell line BEL-7402.Theinduced-apoptosis effect of 1,2 μmol/L arsenictrioxide was related to the expression level ofBcl-2 and Bax. | Hong Yu Xu You Lin Yang Yuan Yuan Gao Qiao Li Wu Guang Qiang Gao | 2000 | World Journal of Gastroenterology2000，6，5： | 8 |
| 8 | 甘氨鹅脱氧胆酸钠致阻塞性黄疸大鼠肝细胞凋亡中bcl-2 mRNA的表达意义显示文摘目的:探讨bcl-2基因在阻塞性黄疸大鼠肝细胞凋亡中的调控作用。 方法:健康(?)Wistar大鼠,进腹,游离出胆总管,于肝门部结扎胆总管并切断,远端再予以结扎。进腹后不结扎切断胆总管作为阴性对照。结扎后3,7,14,21d处死大鼠,每组8只。采用胶原酶原位肝灌注法获取体外培养正常大鼠及阻塞性黄疸大鼠肝细胞。分别收取正常大鼠及胆总管结扎大鼠肝细胞1×10~9/L^(-1),用Trizol试剂盒一步法提取大鼠肝细胞总RNA,行RT-PCR扩增;用PCR扩增bcl-2,和对照β-actin基因片段;分离的正常大鼠及胆总管结扎14 d大鼠的肝细胞行原代培养,培养板内置小飞片,使用100μmol·L^(-1)甘氨鹅脱氧胆酸钠(GCDC)作用于两组肝细胞24h后,用FCM法分析肝细胞的凋亡比率,用TUNEL技术进行肝细胞凋亡的原位检测。 结果:体外培养正常大鼠及结扎3d大鼠肝细胞bcl-2 mRNA的表达为阴性,仅见β-actin条带;胆总管结扎大鼠体外培养肝细胞在结扎后7d即可见肝细胞内bcl-2 mRNA的表达,其吸光度A值为0.13±0.15;结扎后14、21d也可检测其表达,bcl-2 mRNA吸光度在结扎14d达高峰,为0.56±0.21,且与结扎7、21d相比,两者差异有显著性(P<0.05);100μmol·L^(-1)的GCDC作用正常大鼠肝细胞后,凋亡明显增加,凋亡率为34.9±2.9%; | 王剑明 邹声泉 | 2002 | 世界华人消化杂志2002，10，3： | 6 |
| 9 | 大肠腺癌组织Survivin蛋白的表达意义显示文摘目的:检测凋亡抑制蛋白Survivin在大肠腺瘤、腺癌组织中的表达,观察其与细胞增生、凋亡的关系,探讨Survivin基因表达在大肠癌发生、发展过程中的作用.方法:应用DNA缺口未端标记技术和免疫组织化学S-P法,原位观察20例正常大肠黏膜组织、35例大肠腺瘤和60例大肠腺癌组织中的凋亡细胞和Survivin、Ki-67蛋白阳性表达.结果:Survivin蛋白在正常大肠黏膜组织中不表达,在大肠腺癌和腺瘤中阳性表达率分别为60.0%和17.1%,二者比较差异有显著性(P<0.01).Survivin蛋白表达与大肠腺癌分化程度呈负相关,与Dukes’分期和淋巴结转移无明显相关.大肠腺癌Ki-67标记指数(labelingindex,LI)为39.1±10.4%,较腺瘤22.3±6.2%显著增高(P<0.01),大肠腺癌Survivin阳性组Ki-67LI25.1±7.6%与Survivin阴性组19.7±5.8%比较差异有显著性(P<0.01).大肠腺瘤和腺癌细胞凋亡指数(AI)显著高于正常大肠黏膜(P<0.01),高分化癌凋亡指数显著高于低分化癌(P<0.05),大肠腺癌Survivin阳性组凋亡指数0.85±0.52%与Survivin阴性组1.25±0.58%比较差异有显著性(P<0.01).结论:Survivin基因在大肠腺癌组织中表达上凋,通过促进肿瘤细胞增生和抑制凋亡参与大肠癌的发生、发展过程.检测大肠组织Survivin蛋白表达,对预测癌变及判断预后有重要意义.Survivin基因为肿瘤的基因治疗提供一理想靶点. | 肖军 邓长生 朱尤庆 | 2003 | 世界华人消化杂志2003，11，5： | 6 |
| 10 | Oil A induces apoptosis of pancreatic cancer cells via caspase activation, redistribution of cell cycle and GADD expression显示文摘AIM: To explore the mechanisms of effects of oil A on apoptosis of human pancreatic cancer cells.METHODS: Cellular DNA content was analyzed by flow cytometry. Western blotting was used for caspase-3 and PARP, caspase-7, caspase-9, cytochrome c, Bcl-2, Bax, Mcl-1, cyclinA, cyclin B1, cyclin D1, cyclin E, CDK2, CDK4, CDK6,P21, P27,GADD45, GADD153.RESULTS: The caspase-3, caspase-7, and caspase-9activities were significantly increased as well as the cleavage of caspase-3, downstream substrate poly-ADP ribose polymerase (PARP) was induced. The amount of cytochrome c in the cytosolic fraction was increased, while the amount of cytochrome c in the mitochondrial fraction was decreased after oil A treatment. The anti-apoptosis proteins Bcl-2and Mci-1 were decreased in parallel and Bax increased,indicating that Bcl-2 family proteins-mitochondria-caspase cascade was responsible for oil-induced apoptosis. The proportion of cells in the G0/G1 decreased in MiaPaCa-2and AsPC-1 cells after the treatment of oil A for 24 hours.The number of cells in S phase was increased in two cancer cell lines at 24 hours. Therefore, cells were significantly accumulated in G2/M phase. The cells with a sub-G0/G1DNA content, a hallmark of apoptosis, were seen at 24 hours both in MiaPaCa-2 and AsPC-1 cells following exposure to oil A. The expression of cyclin A and cyclin B1 was slightly decreased and cyclin D1 levels were markedly lowered in MiaPaCa-2 cells. The expression of cyclin A and cyclin B1 was markedly decreased and cyclin D1 levels were slightly lowered in AsPC-1 cells, while cydin E was not affected and the levels of CDK2, CDK4, and CDK6 were unchanged in MiaPaCa-2 and AsPC-1 cells. In response to oil A, P21 expression was increased, but P27 expression was not affected. The expression of both GADD45 and GADD153was increased in two cell lines following oil A treatment.CONCLUSION: Oil A induces apoptosis of pancreatic cancer cells via activating caspase cascade, modifying cell cycle progress and changing cell cycle-regulating proteins and GADD expression. | Mi-LianDong Yue-ChunZhu JohnV.Hopkins | 2003 | World Journal of Gastroenterology2003，9，12： | 4 |
| 11 | 2-(3-羧基-1-丙酰氨基)-2-脱氧-D-葡萄糖诱导肝癌细胞凋亡的形态学变化显示文摘目的:探讨2-(3-羧基-1-丙酰氨基)-2-脱氧-D-葡萄糖诱导肝癌细胞株HepG2凋亡的可能性. 方法:选用不同浓度的2-(3-羧基-1-丙酰氨基)-2-脱氧- D-葡萄糖与肝癌细胞株共同孵育不同时间后,应用倒置相差显微镜、荧光显微镜、透射电子显微镜对细胞生长状况及药物作用后细胞的形态进行观察. 结果:经2-(3-羧基-1-丙酰氨基)-2-脱氧-D-葡萄糖作用24-72 h后,HepG2肝癌细胞株出现体积缩小,荧光染色增强,胞核或胞质中可见致密浓染的块状或颗粒状黄绿色荧光染色.染色质固缩,并凝结成块,聚集在核膜周边呈新月状或肾状,胞质浓缩,内质网疏松并与胞膜融合形成一个个空泡.且凋亡细胞含量呈一定的浓度、时间相关性. 结论:2-(3-羧基-1-丙酰氨基)-2-脱氧-D-葡萄糖具有诱导HepG2细胞凋亡的作用. | 吴静 寇炜 雍建平 王爱勤 刘维民 薛群基 | 2004 | 世界华人消化杂志2004，12，9： | 0 |
| 12 | Survivin在结直肠癌中的表达及其临床意义显示文摘目的:探讨结直肠癌组织中凋亡抑制因子Survivin的表达及其与各临床病理因素的关系,评价Survivin在结直肠癌预后判断中的价值。方法:应用组织芯片结合免疫组织化学SABC法,检测126例结直肠癌组织中Survivin的表达情况,分析Survivin与各临床病理因素及预后之间的关系。结果:根据免疫组化染色强度和分级结果,所有病例被分为Survivin高表达组和低表达组。其中高表达组有26例(26/126,20·6%),低表达组有100例(100/126,79·4%)。Survivin在结直肠癌中表达情况与年龄、性别、肿瘤大小、肿瘤部位、组织学类型、浸润深度、淋巴是否转移和Dukes分期均无显著相关。然而,高表达的Survivin与肿瘤复发、特别是血行转移显著相关,P<0·05。Survivin高表达组和低表达组的生存率用Kaplan-Meier方法评估,并用log-rank test进行比较,两组之间生存率差异具有统计学意义,P<0·05。多因素分析结果显示,在潜在的预后因素中(年龄、性别、肿瘤大小、肿瘤部位、组织学类型、淋巴是否转移和Dukes分期、Survivin表达),Survivin表达和Dukes分期被认为是结直肠癌根治术后独立预后因素。结论:Survivin的表达与结直肠癌的术后复发相关:结直肠癌术后复发率在Survivin高表达组明显高于Survivin低表达组,是与预后相关的独立危险因子。应用组织芯片高效检测临床组织样本具有快速、方便、经济、准确的优点。 | 吴爱国 姚红兵 陈佑江 文明波 周魁平 | 2006 | 中华肿瘤防治杂志2006，13，7： | 0 |
| 13 | Red oil A5 inhibits proliferation and induces apoptosis in pancreatic cancer cells显示文摘AIM: To study the effect of red oil A5 on pancreatic cancer cells and its possible mechanisms. METHODS: Effect of different concentrations of red oil A5 on proliferation of three pancreatic cancer cell lines, AsPC-1, MiaPaCa-2 and S2013, was measured by 3H-methyl thymidine incorporation. Time-dependent effects of 1:32 000 red oil A5 on proliferation of three pancreatic cancer cell lines, were also measured by ^3H-methyl thymidine incorporation, and Time-course effects of 1:32 000 red oil A5 on cell number.The cells were counted by Z1-Coulter Counter. Fiowcytometric analysis of cellular DNA content in the control and red oil A5 treated AsPC-1, MiaPaCa-2 and $2013 cells,were stained with propidium iodide. TUNEL assay of red oil A5-induced pancreatic cancer cell apoptosis was performed. Western blotting of the cytochrome c protein in AsPC-1, MiaPaCa-2 and $2013 cells treated 24 hours with 1:32 000 red oil A5 was performed. Proteins in cytosolic fraction and in mitochondria fraction were extracted. Proteins extracted from each sample were electrophoresed on SDS-PAGE gels and then were transferred to nitrocellulose membranes. Cytochrome c was identified using a monoclonal cytochrome c antibody. Western blotting of the caspase-3 protein in AsPC-1, MiaPaCa-2 and S2013 cells treated with 1:32 000 red oil A5 for 24 hours was carried out. Proteins in whole cellular lysates were electrophoresed on SDS-PAGE gels and then transferred to nitrocellulose membranes. Caspase-3 was identified using a specific antibody. Western blotting of polyADP ribose polymerase (PARP) protein in AsPC-1, MiaPaCa2 and S2013 cells treated with 1:32 000 red oil A5 for 24 hours was performed. Proteins in whole cellular lysates were separated by electrophoresis on SDS-PAGE gels and then transferred to nitrocellulose membranes. PARP was identified by using a monoclonal antibody. RESULTS: Red oil A5 caused dose- and time-dependent inhibrdon of pancreatic cancer cell proliferation. Propidium iodide DNA staining showed an increase of the sub-G0/G1 cell population. The DNA fragmentation induced by red oil A5 in these three cell lines was confirmed by the TUNEL assayFurthermore, Western blotting analysis indicated that cytochrome c was released from mitochondda to cytosol during apoptosis,and caspase-3 was activated following red oil A5 treatment which was measured by procaspase-3 cleavage and PARP cleavage. CONCLUSION: These findings show that red oil A5 has potent anti-proliferative effects on human pancreatic cancer cells with induction of apoptosis in vitro. | Mi-LianDong Xian-ZhongDing ThomasE.Adrian | 2004 | World Journal of Gastroenterology2004，10，1： | 0 |
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