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抑癌基因PTEN在原发性肝癌中的表达及意义 总被引:8,自引:2,他引:8
目的 研究抑癌基因PTEN在原发性肝癌发生过程中的作用及意义。方法 应用免疫组织化学和northern杂交分析60例原发性肝癌及对应癌旁组织中PTEN mRNA及PTEN蛋白表达情况,结合患者的临床病理资料分析PTEN在原发性肝肝癌中的意义。结果 PTEN蛋白明确定位于肝细胞胞浆内。60例HCC的癌组织中,PTEN蛋白阳性率为48.3%(29/60),明显低于癌旁肝组织的阳性率(100%)。PTEN蛋白在肝癌组织内的表达阳性率与肝癌的病理学分级、有无癌栓有关,PTEN蛋白在肝癌组织的Ⅰ~Ⅱ级、Ⅲ级、Ⅳ级的阳性率分别为84.0%、23.8%、21.4%,无癌栓形成组PTEN蛋白表达的阳性率为55.56%,有癌栓形成组PTEN蛋白表达的阳性率为26.7%。Northern杂交显示,PIEN基因在肝癌细胞内存在四个转录子,其大小分别为5.5、4.4、2.4、1.8 kb。患者肝癌组织内PTEN mRNA的表达水平明显低于对应的癌旁肝组织。PTEN 5.5 kb和4.4 kb的转录子表达水平的降低与血清中AFP水平、有无癌栓、有无卫星灶及病理学分级有关;2.4 kb的转录子表达水平降低与患者有无癌栓、有无卫星灶有关;1.8 kb转录子表达水平的降低与临床病理学指标无关。结论 PTEN在肝癌的发生过程中可能起重要作用,其表达水平有可能作为反映肝癌进展和预后的病理学指标。 相似文献
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核蛋白类基因在人肝细胞癌中的变化及其意义 总被引:2,自引:0,他引:2
杨少波 《国外医学:内科学分册》1994,21(11):476-479
在人肝细胞癌及其癌旁组织中至少发现七种基因的重排、扩增、点突变或过量表达等,其中c-myc、c-fos、c-ets-2和p53基因属于核蛋白类,它们的产物大多具有与DNA结合的能力,对肝细胞恶性转化及维持起着重要作用,抑癌基因p53在人肝癌中的异常变化是目前研究的重点。对核蛋白类基因的研究有利于进一步明确人肝细胞癌的发生机制,并且对人肝细胞癌的诊断及治疗均有重要意义。 相似文献
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目的 探讨反义寡核昔酸多位点封闭HBx基因对人类肝癌组织在裸小鼠皮下移植瘤发生的影响.方法 50只裸小鼠随机等分为5组,1组为对照组,其余4组为实验组(AS1~AS4组),取对数期生长的内源性表达HBx蛋白的人类肝癌细胞系(Hep3B细胞)皮下注射,从第2天开始实验组分别通过腹膜腔内注射反义寡核苷酸AS1~AS4片段(剂量为10 μg/g),隔日注射,共注射5次,对照组注射无菌双蒸馏水,观察裸小鼠皮下移植瘤生长情况,记录移植瘤潜伏期(从皮下注射肿瘤细胞至首次观察到皮下瘤结节),满30 d实验终止,比较实验组和对照组移植瘤发生率,以生存分析模型分析移植瘤潜伏期在各组间的差异.结果 实验组(AS1~AS3组)及对照组移植瘤发生率均为100%,AS4组10只小鼠中有1只小鼠实验结束时仍未观察到移植瘤的形成,各组小鼠移植瘤发生率差异无统计学意义.AS1~AS4组及对照组移植瘤潜伏期中位时间分别为19、12、11、21、10 d,AS1,AS4组与对照组之间,差异有统计学意义(χ2=40.94,P<0.01).结论 反义寡核苷酸在恰当位点封闭HBx基因可以有效延长人类肝癌组织(Hep3B细胞系)在裸小鼠皮下移植瘤形成的潜伏期;但有限次数的干扰不能完全阻断移植瘤的发生;腹膜腔注射是反义寡核苷酸进入活体裸小鼠并发挥干扰作用的一条有效途径. 相似文献
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PTEN基因具有双重特异性磷酸酶活性,PTEN基因在原发性肝癌的发生发展中具有重要的作用,此文就PTEN基因在原发性肝癌中的表达及其意义作一综述. 相似文献
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恶性肿瘤的发生是多基因突变的结果 ,可在信号传导通路中多个环节发生异常 ,使得调节细胞生长、分化和凋亡的机制发生紊乱。现已发现抑癌基因磷酸酯酶 ( PTEN)在调节肿瘤细胞的生长、分化、凋亡、浸润、转移和肿瘤血管生成等各方面均具有重要作用 [1]。本研究采用免疫组化方法检测 5 8例肾透明细胞癌组织中 PTEN蛋白的表达水平 ,探讨其在肾透明细胞癌的发生、发展中作用。现报告如下。1 资料与方法1 .1 临床资料 选择 1 997~ 2 0 0 3年山东大学齐鲁医院病理科存档的 5 8例肾癌标本。Robson分期 : 期6例 , 期 2 8例 , 期 1 9例 , 期 … 相似文献
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目的 建立具有器官转移亲嗜性的单克隆人肝癌细胞株和相应的裸鼠移植模型. 方法 取肺和淋巴结转移亲嗜性人肝癌荧光细胞株HCCLM3-R-LM1及HCCLM3-R-LnM1,通过极限稀释法进行单细胞培养,获得8个HCCLM3-R-LM1来源的单克隆细胞株(LM1-S2,-S3,-S4,-S5,-S11,-S15,-S21,-S23)和5个HCCLM3-R-LnM1来源的单克隆细胞株(LnM1-S7,-S11,-S13,-S17,-S20);将上述人肝癌单克隆细胞分别接种于4周龄的裸鼠皮下,3周后皮下瘤组织移植至裸鼠的肝脏,6周后观察裸鼠肺和腹腔淋巴结转移灶荧光面积,并与肺组织连续切片中的转移灶数目进行比较.同一株细胞的肺和淋巴结转移情况比较用Wilcoxon秩和检验,单克隆细胞株之间的肺、淋巴结转移情况比较用Kruskal-Wallis检验. 结果 在13株人肝癌单克隆细胞中,有6株细胞形成皮下瘤;移植至裸鼠肝脏后表现出不同的转移潜能和器官靶向特性.其中LM1-S3,LM1-S4,LM1-S5和LM1-S11单克隆细胞的肺转移积分吸光度值分别为80923±10162、1506000±297064、36 140±8210和508448±1342729(P<0.01),但不发生淋巴结转移.LnM1-S11单克隆细胞的肺与淋巴结转移灶积分吸光度值分别为435 062±206 620和1254000±225171. 结论 成功建成了不同转移潜能和器官亲嗜性的人肝癌单克隆细胞株和裸鼠移植模型,其中LM1-S3,LM1-S4,LM1-S5和LM1-S11为肺特异亲嗜性的人肝癌单克隆细胞株,而LnM1-S11细胞为肺和淋巴结双重亲嗜性的人肝癌单克隆细胞株,为肝癌转移器官靶向性研究提供了理想的体内外模型. 相似文献
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目的 克隆具有肺和淋巴结转移亲嗜性的人肝癌细胞并建立相应的裸鼠移植模型.方法 将荧光人肝癌细胞HCCLM3-R接种于4周龄的裸鼠肝脏,6周后在荧光解剖下观察并获取肺及腹腔淋巴结转移灶组织,经体外克隆培养,所获细胞分别标记为HCCLM3-R-LM1和HCCLM3-R-LnM1.接种上述两种细胞于4周龄裸鼠肝脏,观察各自肺和腹腔淋巴结转移灶荧光数量,并与肺组织连续切片中的转移灶数目进行比较.计量资料采用Wilcoxon秩和检验和Kruskal-Wallis秩和检验进行统计学分析.结果 HCCLM3-R-LM1、HCCLM3-R和HCCLM3-R-LnM1细胞接种于裸鼠肝脏后第6周,在肺和腹腔淋巴结中均能发现肿瘤转移.3株细胞接种后,裸鼠肺和腹腔淋巴结转移灶荧光面积分别为8687.00±1844.63和2570.00±318.20(P<0.001),6457.67±832.62和10 994.33±2212.31(P<0.001),2968.67±2571.00和24 416.00±7186.13(P<0.001),每只裸鼠光镜下肺转移灶中位数分别为755、430、310个(P<0.001),与荧光定量结果相吻合.结论 成功建成人肝癌肺和淋巴结亲嗜性转移细胞和裸鼠移植模型,其中HCCLM3-R-LM1细胞具有明显的肺转移特性,而HCCLM3-R-LnM1细胞具有明显的淋巴结转移特性,为肝癌器官靶向转移研究提供了理想的体内外模型.Abstract: Objective To establish a systematic site-specific metastatsis model of human hepatocellular carcinoma (HCC) in nude mouse.Methods HCCLM3-R cells were seeded into mice liver to establish xenograft mouse models.With the help of RFP,metastasis foci in lungs and lymph nodes in mice were detected using fluorescent stereomicroscopy and were removed.Cells derived from the metastasis foci were named HCCLM3-R-LM1 and HCCLM3-R-LnM1 respectively.HCCLM3-R-LM1 and HCCLM3-R-LnM1 cells were seeded into mice livers to analyze the lung and lymph node metastasis.Lungs of all tested mice were collected,examined by pathological evaluation and counted lung metastasis.Results Both lung and lymph node metastasis were found in HCCLM3-R-LM1,HCCLM3-R and HCCLM3-R-LnM1 cells and a significant difference was found between the lung and the lymph node metastasis levels in the three cells.The fluorescent areas (pixels) of lung and lymph node metastasis were 8687.00 ± 1844.63 versus 2570.00 ±318.20 (P = 0.0031) in HCCLM3-R-LM1 cells,6457.67±832.62 versus 10 994.33±2 212.31(P=0.0036) in HCCLM3-R cells,and 2968.67 ± 2571.00 versus 24 416.00 ± 7 186.13 (P = 0.0094) in HCCLM3-R-LnM 1 cells,respectively.The middle numbers of microscopic lung metastatic foci were 775,430 and 310in HCCLM3-R-LM1,HCCLM3-R and HCCLM3-R-LnM1 cells (P<0.001),respectively,consist with the results quantified by RFP.Conclusion We established the systematic site-specific metastasis models which demonstrates lung- and lymph node-specific metastasis potential in nude mice and can be used as a model for researches on site-specific metastasis of HCC. 相似文献
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目的 探讨塞来昔布联合氟伐他汀对实验性人肝癌裸鼠皮下移植瘤生长及细胞凋亡的影响.方法 32只实验裸鼠左腋窝皮下接种BEL-7402肝癌细胞株,随机分为对照组、塞来昔布组、氟伐他汀组及塞来昔布和氟伐他汀联合用药组.实验结束时,留取移植瘤标本,流式细胞术及原位缺口末端标记法检测肿瘤细胞凋亡率,Western blot检测Akt、磷酸化Akt(p-Akt)和survivin蛋白的表达情况.数据比较采用析因设计多因素方差分析及多个样本均数间多重比较的SNK-q检验.结果 联合用药组肿瘤生长明显被抑制,塞来昔布组、氟伐他汀组抑瘤率分别为34.0%和25.0%,联合用药组抑瘤率为72.2%.对照组细胞凋亡指数为3.5%±0.8%,联合用药组为19.4%±3.0%,塞来昔布组和氟伐他汀组分别为8.5%±1.4%和9.4%±1.7%,联合用药组肿瘤细胞凋亡明显高于塞来昔布及氟伐他汀单药组(P值均<0.01).流式细胞术检测结果显示,移植瘤细胞凋亡率对照组为4.1%±1.6%,塞来昔布组为9.1%±2.1%,氟伐他汀组为10.1%±2.3%,联合用药组为23.6%±5.8%,各单药用药组均高于对照组(P值均<0.05),其中联合用药组高于对照组及各单药组(P值均<0.01).Western blot检测结果显示,联合用药组较对照组明显下调p-Akt(0.23±0.08比1.12±0.07)和survivin蛋白(0.50±0.07比1.47±0.19)的表达(P值均<0.01).结论 与单用塞来昔布或氟伐他汀相比,联合用药能更有效地抑制肝癌细胞生长. 相似文献
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胃癌组织中抑癌基因PTEN的表达及其意义 总被引:1,自引:0,他引:1
胃癌的发生、发展是个多步骤、多因素共同参与的复杂过程 ,癌基因的激活和抑癌基因的失活是该过程中的重要分子机制之一。与细胞支架蛋白 tensin同源在 1 0号染色体有缺失的磷酸酯酶 ( PTEN)是人类新发现的第一个具有磷酸酶活性的抑癌基因 ,能通过脱磷酸化作用调控细胞内信号传导通路 ,从而调节细胞正常的生长、发育及抑制肿瘤细胞增殖、粘附、转移。近年研究发现 ,PTEN基因突变、缺失及蛋白表达异常与人类多种恶性肿瘤的发生、发展密切相关 [1]。但有关 PTEN基因与胃癌的关系研究尚少 ,我们应用免疫组化技术 ,对 5 7例胃癌及邻近正常… 相似文献
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CIK cells from patients with HCC possess strong cytotoxicity to multidrug-resistant cell line Bel-7402/R 总被引:9,自引:0,他引:9
Zhang YS Yuan FJ Jia GF Zhang JF Hu LY Huang L Wang J Dai ZQ 《World journal of gastroenterology : WJG》2005,11(22):3339-3345
ABM: To investigate the cytotoxicity of the cytokine-induced killer (CIK) cells from the post-operation patients with primary hepatocellular carcinoma (HCC) to multidrug-resistant (MDR) cell of HCC both in vitro and in vivo. METHODS: A drug-resistant cell line was established by culturing human HCC cell line Bel-7402 in complete RPMI 1640 medium with increasing concentrations of adriamycin from 10 to 2 000 nmol/L. CIK cells were obtained by inducing the peripheral blood mononuclear cells with rhlFN-γ, monoclonal anti-CD3 antibody, rhIL-1α as well as rhIL-2, which were added into the culture. To detect the cytotoxicity of the CIK cells from HCC patients, the Bel-7402/R was taken as target (T) cells and CIK cells as effect (E) cells. Cytotoxic test was performed and measured by MTT. As to in vivo test, CIK cells were transfused into patients with HCC. The tumor specimens of the patients were obtained and immunohistochemistry was carried out to detect CD3, CD45, CD45RO as well as CD68. RESULTS: A MDR 1 HCC cell line Bel-7402/R was established. Its MDR1 mRNA overexpressed which was shown by RT-PCR; the P-glycoprotein expression increased from 1.32% of parent cells to 54%. CIK cells expanded vigorously by more than 70-fold and the CD3+CD56+ increased by more than 600-fold after 3-wk incubation on average. The cytotoxicity of CIK from HCC patients to Bel-7402/R was about 50% and to L-02 below 10% (t = 8.87, P<0.01), the same as that of CIK from normal individuals. Each of the 17 patients received 1-5×1010of CIK cell transfusion. No side effects were observed. After CIK treatment, the tumor tissue nodules formed and a large amount of lymphocytes infiltrated in the liver cancer tissue and CD3, CD45, CD45RO, and CD68 increased greatly which was shown by immunohistochemistry. CONCLUSION: A stable MDR1 HCC cell line has been established which could recover from liquid nitrogen and CIK from HCC patients has strong cytotoxicity to MDR HCC cell. CIK adoptive immunotherapy is safe and has no side effects. Receivers improved their immunity to tumor evidently. CIK treatment may be a better choice for HCC patients after operation to prevent the recurrence, especially when tumors have developed drug resistance. 相似文献
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Han KQ Huang G Gu W Su YH Huang XQ Ling CQ 《World journal of gastroenterology : WJG》2007,13(24):3374-3379
AIM: To investigate anti-tumor activities and apoptosisregulated mechanisms of bufalin in the orthotopic transplantation tumor model of human hepatocellular carcinoma in nude mice.
METHODS: BEL-7402 cells of human hepatocellular carcinoma were inoculated to form subcutaneous tumors, and were implanted into the liver to establish orthotopic transplantation tumor models of human hepatocellular carcinoma in nude mice. Seventy-five animals were randomized divided into five groups (n = 15). Bufalin was injected intraperitoneally into three groups at doses of 1.5 mg/kg (BF1), 1 mg/kg (BF2) and 0.5 mg/kg (BF3) for d 15-24, respectively. The NS group was injected an equal volume of saline as above and adriamycin was injected intraperitoneally into the ADM group at a dose of 8.0 mg/kg for d 15. Ten mice in each group were killed at d 25 and the survival time in each group was calculated. We also observed the morphologic alterations in the myocardium, brain, liver, kidney and tumor tissues by pathology and electron microscopy, measured the apoptotic rate by TUNEL staining method, and detected the expression of apoptosis-regulated genes bcl-2 and bax by immunohistochemical staining and RT-PCR in tumor tissues.
RESULTS: The tumor volumes in each group of bufalin were reduced significantly (35.21±12.51 vs 170.39 ± 25.29; 49.83 ± 11.46 vs 170.39 ± 25.29; 83.99 ± 24.63 vs 170.39 ± 25.29, P 〈 0.01, respectively), and the survival times were prolonged in group BF1-2 (31.8 ± 4.2 vs 23.4 ± 2.1 and 29.4 ± 3.4 vs 23.4 ± 2.1, P 〈 0.05, respectively), and necrosis was mainly in severe or moderate degree in group BF1-2. No morphological changes were detected in the myocardium, brain, liver and kidney tissues. Apoptotic characteristics could be seen in group BF1-2. The positive rates of bcl-2 and bax protein expression of each group by immunohistochemical staining were 10.0%, 10.0%, 20.0%, 10.0% and 20.0%; 90.0%, 80.0%, 80.0%, 40.0% and 30.0%, respectively. Loss of expression of bcl-2 mRNA 相似文献
METHODS: BEL-7402 cells of human hepatocellular carcinoma were inoculated to form subcutaneous tumors, and were implanted into the liver to establish orthotopic transplantation tumor models of human hepatocellular carcinoma in nude mice. Seventy-five animals were randomized divided into five groups (n = 15). Bufalin was injected intraperitoneally into three groups at doses of 1.5 mg/kg (BF1), 1 mg/kg (BF2) and 0.5 mg/kg (BF3) for d 15-24, respectively. The NS group was injected an equal volume of saline as above and adriamycin was injected intraperitoneally into the ADM group at a dose of 8.0 mg/kg for d 15. Ten mice in each group were killed at d 25 and the survival time in each group was calculated. We also observed the morphologic alterations in the myocardium, brain, liver, kidney and tumor tissues by pathology and electron microscopy, measured the apoptotic rate by TUNEL staining method, and detected the expression of apoptosis-regulated genes bcl-2 and bax by immunohistochemical staining and RT-PCR in tumor tissues.
RESULTS: The tumor volumes in each group of bufalin were reduced significantly (35.21±12.51 vs 170.39 ± 25.29; 49.83 ± 11.46 vs 170.39 ± 25.29; 83.99 ± 24.63 vs 170.39 ± 25.29, P 〈 0.01, respectively), and the survival times were prolonged in group BF1-2 (31.8 ± 4.2 vs 23.4 ± 2.1 and 29.4 ± 3.4 vs 23.4 ± 2.1, P 〈 0.05, respectively), and necrosis was mainly in severe or moderate degree in group BF1-2. No morphological changes were detected in the myocardium, brain, liver and kidney tissues. Apoptotic characteristics could be seen in group BF1-2. The positive rates of bcl-2 and bax protein expression of each group by immunohistochemical staining were 10.0%, 10.0%, 20.0%, 10.0% and 20.0%; 90.0%, 80.0%, 80.0%, 40.0% and 30.0%, respectively. Loss of expression of bcl-2 mRNA 相似文献
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小鼠肝癌树突状细胞融合瘤苗抗肿瘤作用的研究 总被引:3,自引:0,他引:3
目的 探讨小鼠肝癌树突状细胞(D C)融合瘤苗抗肿瘤作用及其机制。 方法 用聚乙二醇(P E G)法制备小鼠肝癌D C融合瘤苗;流式细胞仪检测融合细胞表型特征;体内预防试验观察融合瘤苗免疫小鼠抵抗肿瘤攻击能力,乳酸脱氢酶(L D H)法检测其诱导的杀伤性T淋巴细胞活性;体内治疗试验观察荷瘤小鼠生存期及肿瘤组织中肿瘤坏死因子(TNF-α)、γ干扰素(IFN-γ)表达。 结果 小鼠肝癌D C融合瘤苗具备D C及肝癌细胞表型特征,能抵抗H 22小鼠肝癌细胞的攻击及诱导较强的细胞毒性T淋巴细胞(CTL)活性,DC/H22、DC H22、DC、H22各组CTL活性(A值)分别为0.624±0.014、0.330±0.014、0.262±0.019、0.246±0.017,F=65.46,P<0.01,能显著促进肿瘤组织中TNF-α、IFN—γ表达(F值分别为47.84、37.23,P值均<0.01)及延长荷瘤小鼠生存期(x2=18.45,P<0.01)。 结论 小鼠肝癌DC融合瘤苗能有效地诱导抗肿瘤免疫反应,在预防和治疗肝癌的复发及转移中有广阔的应用前景。 相似文献
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瑞香狼毒药效组分对裸鼠肝癌移植瘤的抑制及其机制 总被引:1,自引:0,他引:1
目的:评价瑞香狼毒药效组分抑制人肝癌细胞株BEL-7402裸鼠皮下移植瘤作用的强度,并探讨其机制.方法:建立人肝癌BEL-7402裸小鼠皮下移植瘤模型研究瑞香狼毒药效组分Zp1111抗肿瘤作用与对荷瘤裸鼠体质量与免疫器官的影响,免疫组织化学法检测用药前后BEL-7402皮下移植瘤组织Bcl-2与Bax阳性表达的变化.结果:Zp1111对裸小鼠皮下移植瘤BEL-7402具有较强的抑制作用,187.5mg/kg、250mg/kg(折合成生药量)剂量时对移植瘤的相对肿瘤增殖率T/C小于60%;该组分能显著上调BEL-7402移植瘤组织Bax基因的表达,但对Bcl-2的表达影响较弱.结论:瑞香狼毒药效组分在体内对人肝癌细胞BEL-7402裸鼠移植瘤具有较强的抑制作用并呈现一定的剂量依赖关系,该组分具有一定的诱导凋亡作用,可能与上调Bax有关. 相似文献
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目的 模拟临床肝癌切除病例构建姑息性肝切除裸鼠模型,用于研究手术对残癌的影响并探索干预策略. 方法 采用肝左叶单瘤源接种技术,构建高转移潜能MHCC97H细胞裸鼠原位移植瘤模型,成功建模后14 d行姑息性肝切除.姑息术后14d,分析肿瘤相关基因差异表达;观察35 d,检测肝内、肺脏及腹腔转移;剩余裸鼠用于观察生存期.计量资料比较用t检验,生存分析用Kaplan-Meier法(Log Rank检验),P<0.05为差异有统计学意义. 结果 原位移植瘤模型成功率100%,成功构建裸鼠姑息性肝切除模型,无手术相关死亡裸鼠.姑息组裸鼠肝内转移结节多于假手术组[(11.7±4.7)个对比(6.3±2.8)个,t=-2.412,P<0.05],腹腔转移结节多于假手术组[(9.8±3.4)个对比(5.2±2.6)个,t=-2.641,P<0.05],肺转移结节也多于假手术组[(14.3±4.7)个对比(8.7±4.7)个,t=-2.348,P<0.05].应用生物信息学技术进一步分析发现,肿瘤转移抑制蛋白1、肿瘤坏死因子β1、Smad2、白细胞介素1β及基质金属蛋白酶7基因在姑息组残癌基因功能网络中处于核心位置.姑息组裸鼠生存期为(60.8±2.7)d,假手术组裸鼠生存期为(51.3±1.4)d,差异有统计学意义(x2=12.850,P<0.01).结论 单瘤源姑息性肝切除模型能有效模拟临床肝切除病例,为术后残癌生物学特性的研究及干预提供一个新的平台. 相似文献
18.
目的比较肝癌细胞不同制悬方法建立裸鼠皮下瘤及原位瘤模型,优选建模方法。方法将肝癌细胞分别采用PBS缓冲液(PBS组)、无血清DMEM溶液(DMEM组)和含10%血清的DMEM溶液(血清DMEM组)3种液体制悬后注入裸鼠皮下建立肝癌裸鼠皮下瘤模型,比较皮下瘤的体积、瘤重及成瘤率;将肝癌细胞分别采用PBS缓冲液(PBS组)、无血清DMEM溶液(DMEM组)和含10%血清的DMEM溶液(血清DMEM组)3种液体制悬后注入裸鼠肝脏建立肝癌裸鼠原位瘤模型,比较原位瘤的成瘤率。结果3组裸鼠皮下瘤模型的皮下瘤体积及瘤重相比,差异无统计学意义(P0.05),但是PBS组及DMEM组的成瘤率(90%和100%)明显高于血清DMEM组(40%),差异有统计学意义(P0.05);裸鼠原位瘤模型中PBS组的成瘤率(90%)明显高于DMEM组(40%)及血清DMEM组(20%),差异有统计学意义(P0.05)。结论采用PBS缓冲液或无血清DMEM溶液对肝癌细胞稀释制悬可以有效建立裸鼠皮下瘤模型,采用PBS缓冲液对肝癌细胞稀释制悬可以有效建立裸鼠原位瘤模型。 相似文献
19.
益气活血软坚解毒含药血清诱导人肝癌细胞系Bel-7402细胞的凋亡 总被引:4,自引:2,他引:4
目的:研究益气活血软坚解毒(YHRJ)含药血清对人肝癌细胞系Bel-7402生长抑制及诱导凋亡作用.方法:将YHRJ含药血清作用于人肝癌细胞系Bel-7402细胞,应用MTT检测对肝癌细胞生长抑制作用,倒置显微镜、荧光显微镜、激光共聚焦扫描显微镜等影像学方法观察细胞形态学变化,以及PI染色单染、AnnexinV-PI双染后,流式细胞术检测对细胞周期影响及诱导细胞凋亡程度.结果:MTT法检测结果显示:YHRJ含药血清具有抑制Bel-7402肿瘤细胞生长作用(其中20%YHRJ等效剂量抑制率49.1%,与NS比,P<0.01);荧光显微镜及激光共聚焦显微镜可观察到典型的凋亡形态学变化.流式细胞术检测结果,细胞周期出现G0/G1期阻滞,并出现典型的凋亡峰,AnnexinV-PI双染法检测到早期及中晚期细胞凋亡.结论:YHRJ含药血清有抑制人肝癌细胞系Bel-7402细胞生长并有诱导细胞凋亡作用. 相似文献