绿脓杆菌制剂对人肝癌MHCC97L细胞增殖和侵袭能力的影响

Objective To investigate the effects of Pseudomonas aeruginosa vaccine (PA) on proliferation and invasiveness of the hepatocellular carcinoma cell line MHCC97L with metastatic potential. Methods Proliferation, growth curve, plate efficiency, flow cytometry, transwell invasion assay, cell motility assay, scarification test, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP2) protein activity were evaluated after cells were treated with PA at various concentrations. Results PA can inhibit the proliferation and plate efficiency of MHCC97L cell markedly in a dose-dependent manner. The IC50 of cells treated with PA for 48 h and 72 h was 3.1 ×108/ml and 1.9 × 108/ml, respectively. The doubling time increased and plate efficiency decreased gradually when cells treated with 0.5 × 108/ml, 1 × 108/ml and 2 × 108/ml PA (P＜0.01). PA could induce cell cycle arrest at the G1 phase in a dose-dependent manner by flow cytometric analysis. The average amount of invading cell per field in cell invasion assay and motility assay were 4. 8 ± 1.3 and 8. 8±2.2 when cells treated with 1× 108/ml PA, which was significantly lower than that of control group (8. 6±2. 1 and 15. 6±1.2 ) (P＜0.01) Scarification test showed that the metastatic ability of cells treated with 1 × 108/ml PA significantly lower than that in the control group. Comparison between cells treated with 1 × 108/ml PA and control group, no remarkable difference was found regarding expression of VEGF and MMP2 in supernatant of cell culture. Conclusion PA can inhibit proliferation and plate efficiency of HCC cell line MHCC97L, which is in part mediated by the cell cycle arrest at the G1 phase. PA could inhibit invasiveness of HCC cell line MHCC97L, which is unrelated to the VEGF and MMP2 protein activity.     

绿脓杆菌制剂对人肝癌MHCC97L细胞增殖和侵袭能力的影响

Objective To investigate the effects of Pseudomonas aeruginosa vaccine (PA) on proliferation and invasiveness of the hepatocellular carcinoma cell line MHCC97L with metastatic potential. Methods Proliferation, growth curve, plate efficiency, flow cytometry, transwell invasion assay, cell motility assay, scarification test, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP2) protein activity were evaluated after cells were treated with PA at various concentrations. Results PA can inhibit the proliferation and plate efficiency of MHCC97L cell markedly in a dose-dependent manner. The IC50 of cells treated with PA for 48 h and 72 h was 3.1 ×108/ml and 1.9 × 108/ml, respectively. The doubling time increased and plate efficiency decreased gradually when cells treated with 0.5 × 108/ml, 1 × 108/ml and 2 × 108/ml PA (P＜0.01). PA could induce cell cycle arrest at the G1 phase in a dose-dependent manner by flow cytometric analysis. The average amount of invading cell per field in cell invasion assay and motility assay were 4. 8 ± 1.3 and 8. 8±2.2 when cells treated with 1× 108/ml PA, which was significantly lower than that of control group (8. 6±2. 1 and 15. 6±1.2 ) (P＜0.01) Scarification test showed that the metastatic ability of cells treated with 1 × 108/ml PA significantly lower than that in the control group. Comparison between cells treated with 1 × 108/ml PA and control group, no remarkable difference was found regarding expression of VEGF and MMP2 in supernatant of cell culture. Conclusion PA can inhibit proliferation and plate efficiency of HCC cell line MHCC97L, which is in part mediated by the cell cycle arrest at the G1 phase. PA could inhibit invasiveness of HCC cell line MHCC97L, which is unrelated to the VEGF and MMP2 protein activity.     

Mir-145在肝癌细胞及肝癌组织中的表达及其意义

Objective To explore the role of miR-145 in human hepatocellular carcinoma ( HCC). We investigate the expression of miR-145 in human embryonic hepatocytes ( L02 cells),hepatocellular carcinoma cell lines (MHCC97 ,SMMC7721) ,HCC tissues and normal liver. Methods We detected the expressions of miR-145 in human embryonic hepatocytes, hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) ,HCC tissues,cancer organizations and normal liver by real-time PCR. Result The expression of miR-145 in hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) is significantly lower than the human embryonic hepatocytes ( 0. 312 ± 0. 025,0. 396 ± 0. 076,0. 954 ± 0. 037, P ＜ 0. 05), and compared with the cancer organizations and normal liver,the expression of miR-145 in HCC tissues is significantly decreased (0. 162 ±0.002,0. 972 ±0.054,0.956 ±0. 018,P＜0. 05). Conclusion These results indicate that the miR-145 probably involved in HCC pathogenesis and was the indicator of diagnosis and prognosis of the HCC.     

Mir-145在肝癌细胞及肝癌组织中的表达及其意义

Objective To explore the role of miR-145 in human hepatocellular carcinoma ( HCC). We investigate the expression of miR-145 in human embryonic hepatocytes ( L02 cells),hepatocellular carcinoma cell lines (MHCC97 ,SMMC7721) ,HCC tissues and normal liver. Methods We detected the expressions of miR-145 in human embryonic hepatocytes, hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) ,HCC tissues,cancer organizations and normal liver by real-time PCR. Result The expression of miR-145 in hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) is significantly lower than the human embryonic hepatocytes ( 0. 312 ± 0. 025,0. 396 ± 0. 076,0. 954 ± 0. 037, P ＜ 0. 05), and compared with the cancer organizations and normal liver,the expression of miR-145 in HCC tissues is significantly decreased (0. 162 ±0.002,0. 972 ±0.054,0.956 ±0. 018,P＜0. 05). Conclusion These results indicate that the miR-145 probably involved in HCC pathogenesis and was the indicator of diagnosis and prognosis of the HCC.     

消炎痛抑制肝细胞肝癌生长转移的研究

Objective To study the effects of indomethacin on proliferation and invasion of hepatocellular carcinoma (HCC) cell line MHCC97L with metastatic potential and the effect of indomethacin on the growth and metastasis of HCC. Methods (1) In vitro; Proliferation, Transwell invasion assay, cell motility assay, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP-2) protein activity were evaluated after cells were treated with 0. 2 mmol/L indomethacin. (2)In vivo: Mice bearing xenografts in the liver were randomly divided into control and indomethacin groups. At the end of sixth week, the mice were killed and tumor volume, inhibitory rate, immunohistochemistry assay (IHA) and metastasis were evaluated. Results (1)In vitro; 0. 2 mmol/L indomethacin could inhibit the proliferation of MHCC97L cells markedly (P ＜0. 01). The average amount of invading cells per field in cell invasion assay and motility assay was 2. 2 ± 1. 3 and 4.4 ± 1. 1 respectively in indomethacin group, significantly less than in control group ( 11. 4 ± 1. 9 and 12. 8 ± 1. 8 respectively, P ＜0. 01). The expression of VEGF and MMP-2 in cells treated with indomethacin was significantly lower than in control group (P ＜0. 01). (2)In vivo; Tumor volume, incidence and number of lung metastases in control and indomethacin groups were (1700 ±422) mm3 and (1170 ± 585) mm3 (P ＜ 0. 05), 75% and 50% ( P ＞ 0.05), 2. 92 ± 2. 07 and 1.33 ±1.56 (P＜0. 05) , respectively. Inhibition rate in indomethacin group was 31.2%. IHA showed that the expression of VEGF, MMP-2, and cyclooxygenase-2 ( COX-2) was down-regulated in indomethacin group (P ＜0.01). Conclusion Indomethacin could inhibit the growth and metastasis of HCC, which was in part mediated by down-regulation of VEGF and MMP-2.     

消炎痛抑制肝细胞肝癌生长转移的研究

Objective To study the effects of indomethacin on proliferation and invasion of hepatocellular carcinoma (HCC) cell line MHCC97L with metastatic potential and the effect of indomethacin on the growth and metastasis of HCC. Methods (1) In vitro; Proliferation, Transwell invasion assay, cell motility assay, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP-2) protein activity were evaluated after cells were treated with 0. 2 mmol/L indomethacin. (2)In vivo: Mice bearing xenografts in the liver were randomly divided into control and indomethacin groups. At the end of sixth week, the mice were killed and tumor volume, inhibitory rate, immunohistochemistry assay (IHA) and metastasis were evaluated. Results (1)In vitro; 0. 2 mmol/L indomethacin could inhibit the proliferation of MHCC97L cells markedly (P ＜0. 01). The average amount of invading cells per field in cell invasion assay and motility assay was 2. 2 ± 1. 3 and 4.4 ± 1. 1 respectively in indomethacin group, significantly less than in control group ( 11. 4 ± 1. 9 and 12. 8 ± 1. 8 respectively, P ＜0. 01). The expression of VEGF and MMP-2 in cells treated with indomethacin was significantly lower than in control group (P ＜0. 01). (2)In vivo; Tumor volume, incidence and number of lung metastases in control and indomethacin groups were (1700 ±422) mm3 and (1170 ± 585) mm3 (P ＜ 0. 05), 75% and 50% ( P ＞ 0.05), 2. 92 ± 2. 07 and 1.33 ±1.56 (P＜0. 05) , respectively. Inhibition rate in indomethacin group was 31.2%. IHA showed that the expression of VEGF, MMP-2, and cyclooxygenase-2 ( COX-2) was down-regulated in indomethacin group (P ＜0.01). Conclusion Indomethacin could inhibit the growth and metastasis of HCC, which was in part mediated by down-regulation of VEGF and MMP-2.     

表达IL-24基因的溶瘤腺病毒对肝癌细胞的抑制作用

目的 研究携带IL-24基因的溶瘤腺病毒对肝癌细胞抑制生长和转移的作用.方法 构建Ad.HS4.AFP.E1A/IL-24,病毒的复制由人甲胎蛋白启动子控制,携带IL-24基因.检测病毒在不同细胞系中的选择性复制,以及对高转移潜能人肝癌细胞系MHCC97-H的生长抑制、诱导凋亡和抑制转移能力(侵袭、运动、黏附)的作用.结果 Ad.HS4.AFP.E1A/IL-24在肝癌细胞SMMC-7721、Hep3B和MHCC97-H中选择性表达,而不影响正常肝细胞L02(P＜0.05).Ad.HS4.AFP.E1A/IL-24可明显抑制MHCC97-H细胞的增殖,诱导其凋亡,并抑制其体外运动、侵袭和黏附能力(P＜0.01).RT-PCR和明胶酶谱显示其抑制肝癌作用与抑制MMP-2的表达有关.结论 携带IL-24基因的溶瘤腺病毒能够选择性抑制肝癌细胞的增殖并抑制其转移.

Abstract：

Objective To investigate the selective oncolytic role and antitumor action of a novel recombinant adenovirus containing E1A and IL-24 on hepatocellular carcinoma cell(HCC). Methods The recombinant adenovirus expressing IL-24 (Ad. HS4. AFP. E1A/IL-24) was constructed by using modified human alpha-fetoprotein (HS4-AFP) promoter to drive adenovirus E1A gene and II-24 gene.Cell Counting Kit-8 were performed to test the selective cytotoxicity of the virus in hepatocellular carcinoma cell lines SMMC-7721, Hep3B, MHCC97-H and hepatocyte cell line L02 . The mRNA and protein expression of IL-24 gene were detected by RT-PCR and western blot. Cell growth curves and Annexin V/PI assay were used to study cell proliferation and apoptosis of MHCC97-H. The anti-metastatic effects of the recombinant adenovirus were evaluated in cell adhesion, migration, and cell motion. Matrix metalloproteinase-2 (MMP-2) expression was examined by RT-PCR and zymography.Results Selective replications of Ad. HS4. AFP. E1A/IL-24 adenovirus were observed in over expression AFP cell line MHCC97-H, a highly metastatic potential HCC cell line but not in hepatocyte cell line L02. The mRNA and protein of IL-24 were also over expressed in MHCC97-H. This recombinant adenovirus also showed the significant oncolytic action on MHCC97-H but not on L02 (P＜0. 05). Besides, the recombinant adenovirus significantly inhibited MHCC97-H metastatic potential such as cell adhesion, migration and invasion as well(P＜0.01). Conclusion The selective oncolytic adenovirus expressing E1A and II-24 has a selective antitumor effect and play an inhibitory role in metastasis of HCC.     

抗肝肠钙粘连蛋白单克隆抗体对肝癌细胞生物学行为的影响

目的 观察抗肝肠钙粘连蛋白(CDH17)单克隆抗体Lic5对肝癌细胞生物学行为的影响.方法 Western blot和实时定量聚合酶链反应(PCR)检测细胞株MHCC97H、MHCC97L、PLC/PRF/5及MIHA中CDH17的表达.噻唑蓝(MTT)比色法、细胞划痕法、Transwell法及平板克隆法检测Lic5对肝癌细胞生物学行为的影响.结果 CDH17仅在细胞株MHCC97H、MHCC97L中表达,Lic5可结合肝癌细胞表面的CDH17,并抑制CDH17表达.Lic5 50mg/L组、100mg/L组、小鼠IgG组4 d细胞增殖抑制率在MHCC97H为26.1%、43.6%、6.4%,MHCC97L为26.0%、40.7%、7.7%;Lic5100mg/L组、小鼠IgG组、磷酸盐缓冲液(PBS)组48h细胞迁移抑制率在MHCC97H为36.7%、8.4%、5.6%,MHCC97L为42.3%、10.2%、7.4%(P＜0.05);穿膜细胞数在MHCC97H为(39.20±9.56)、(106.50±7.56)、(96.60±13.02)个,MHCC97L为(26.00±8.61)、(86.00±10.26)、(90.40±12.04)(P＜0.05);克隆形成数在MHCC97H为(59.30±11.68)、(141.70±19.40)、(150.30±14.64),MHCC97L为(57.20±10.21)、(132.50±9.07)、(121.70±11.93)(P＜0.01).Lic5对PLC/PRF/5及MIHA细胞的生物学行为无明显影响.结论 单克隆抗体Lic5能够下调肝癌细胞CDH17表达,抑制肝癌细胞的增殖、迁移、侵袭和克隆形成能力.

Abstract：

Objective To investigate the effect of monoclonal antibody against liver-intestine cadherin (CDH17) on the cell proliferation, migration, invasion and colony formation of hepatocellular carcinoma cell lines. Methods Hepatocellular carcinoma cell lines MHCC97H, MHCC97L, PLC/PRF/5 and MIHA were examined for CDH17 expression by Western blotting and quantitative real-time polymerase chain reaction (PGR). The combination capacity between bepatocellular carcinoma cell lines and monoclonal antibody Lic5 was detected by the way of immunofluorescence staining. The cell lines were treated with Lic5, PBS and mouse IgG respectively. Methyl thiazol tetrazolium (MTT) assay, wound healing assay, Transwell invasion assay and colony formation assay were used to study the changes in cell proliferation, migration, invasion and colony formation of hepatocellular carcinoma cell lines. Results High expression level of CDH17 was detected in MHCC97H and MHCC97L cell lines. CDH17 protein level was down-regulated but there was no significant effect on CDH17 mRNA after treatment with Lie5 in MHCC97H and MHCC97L. Cellular growth rate of MHCC97H in Lic5 (50 mg/L), Lic5 ( 100 mg/L) and mouse IgG groups was decreased by 26. 1%, 43.6% and 6. 4%, and by 26. 0%, 40. 7% and 7. 7% in MHCC97L on the 4th day respectively (P ＜0. 05 ). The inhibition rate of cell migration at 48 h was 36. 7%, 8. 4% and 5.6% in Lic5 ( 100 mg/L), mouse IgG and PBS groups in MHCC97H, and 42. 3%, 10. 2% and 7. 4% in MHCC97L respectively ( P ＜ 0. 05 ). The number of invasion cells was ( 39. 20 t 9. 56),(106.50±7.56) and (96.60±13.02) in MHCC97H, and (26.00±8.61), (86.00±10.26) and (90.40±12.04) in MHCC97L in Lic5 (50 mg/L), Lic5 (100 mg/L) and mouse IgG groups, respectively (P ＜ 0. 05 ). The number of colony formation was ( 59. 30 ± 11.68 ), ( 141.70 ± 19. 40 ) and (150.30 ±14.64) in MHCC97H, and (57.20 ± 10.21), (132.50 ±9.07) and (121.70 ±11.93) in MHCC97L in Lie5 (50 mg/L), Lic5 (100 mg/L) and mouse IgG groups, respectively (P＜ 0. 01 ).There was no significant difference between Lic5 treatment groups and controls in PLC/PRF/5 and MIHA cell lines. Conclusion The anti-CDH17 monoclonal antibody Lic5 can down-regulate CDH17 expression and inhibit the cell proliferation, migration, invasion and colony formation in hepatocellular carcinoma cell lines.     

曲尼司特对环孢素A诱导的人肾小管上皮细胞向间充质转变的抑制作用

Objective To study the effect of tranilast on cyclosporine A (CsA)-induced epithelial-to-mesenchymal transition in human renal tubular epithelial cells, and investigate the mechanism of its antifibrotic effect. Methods Cultured HK-2 cells were divided into four groups: (1)In the control group, cells were treated without any medicine; (2) The cell were treated with CsA (4. 2μmol/L) for 72 h; (3) The cells were treated with a combination of CsA (4. 2 μmol/L) and tranilast (100μmol/L); (4) The cells were treated with tranilast (100 μmol/L) alone for 72 h.Morphological changes of the cells were assessed by phase-contrast microscopy. The immunofluorescence and Western blotting were adopted to detect the expression of E-cadherin, α-SMA and OPN mRNA and proteins respectively. Results Tranilast could markedly ameliorate the morphological changes of HK-2 cells stimulated by CsA. The irmmunofluorescence staining revealed the expression of E-cadherin was markedly decreased in HK-2 cells stimulated with CsA for 72 as compared with the control group, while the expression of α-SMA and OPN was significantly higher in CsA group than the control group. The expression of E-cadherin in the CsA + Tranilast group was higher than the CsA group, while the expression of α-SMA and OPN in the CsA + Tranilast group was lower than the CsA group. Western blotting showed that protein expression level of E-cadherin in CsA group was dramatically lower than that in the control group (P＜0. 05), while that of α-SMA and OPN in CsA group was significantly higher than in the control group (P＜0.05). The protein expression level of E-cadherin in HK-2 cells in the CsA + Tranilast group was markedly higher than in the CsA group (P＜0.05), and that of α-SMA and OPN in CsA + Tranilast group was significantly lower than in the CsA group (P＜0. 05). Conclusion Tranilast can block the CsA-induced epithelialto-mesenchymal transition in HK-2 cells probably by suppressing the expression of OPN.     

曲尼司特对环孢素A诱导的人肾小管上皮细胞向间充质转变的抑制作用

Objective To study the effect of tranilast on cyclosporine A (CsA)-induced epithelial-to-mesenchymal transition in human renal tubular epithelial cells, and investigate the mechanism of its antifibrotic effect. Methods Cultured HK-2 cells were divided into four groups: (1)In the control group, cells were treated without any medicine; (2) The cell were treated with CsA (4. 2μmol/L) for 72 h; (3) The cells were treated with a combination of CsA (4. 2 μmol/L) and tranilast (100μmol/L); (4) The cells were treated with tranilast (100 μmol/L) alone for 72 h.Morphological changes of the cells were assessed by phase-contrast microscopy. The immunofluorescence and Western blotting were adopted to detect the expression of E-cadherin, α-SMA and OPN mRNA and proteins respectively. Results Tranilast could markedly ameliorate the morphological changes of HK-2 cells stimulated by CsA. The irmmunofluorescence staining revealed the expression of E-cadherin was markedly decreased in HK-2 cells stimulated with CsA for 72 as compared with the control group, while the expression of α-SMA and OPN was significantly higher in CsA group than the control group. The expression of E-cadherin in the CsA + Tranilast group was higher than the CsA group, while the expression of α-SMA and OPN in the CsA + Tranilast group was lower than the CsA group. Western blotting showed that protein expression level of E-cadherin in CsA group was dramatically lower than that in the control group (P＜0. 05), while that of α-SMA and OPN in CsA group was significantly higher than in the control group (P＜0.05). The protein expression level of E-cadherin in HK-2 cells in the CsA + Tranilast group was markedly higher than in the CsA group (P＜0.05), and that of α-SMA and OPN in CsA + Tranilast group was significantly lower than in the CsA group (P＜0. 05). Conclusion Tranilast can block the CsA-induced epithelialto-mesenchymal transition in HK-2 cells probably by suppressing the expression of OPN.     

索拉非尼对人肝癌细胞的体外杀伤作用与磷酸化胞外信号调节激酶基础表达水平的关系

目的 探讨索拉非尼对不同肝细胞肝癌(HCC)胞株的体外杀伤作用与基础磷酸化胞外信号调节激酶(pERK)表达水平的关系.方法 应用细胞免疫化学定量分析和Western blot方法 检测方法 ,评价不同浓度(0.01～30.00 μmol/L)索拉非尼对4种人肝癌细胞(SMMC-7721、MHCC97-L、MHCC97-H和HCCLM6)体外杀伤作用与细胞基础pERK表达的相关性.结果 4种细胞株基础pERK蛋白表达含量随着转移潜能依次递增.索拉非尼对各细胞株的IC_(50)与pERK蛋白表达呈负相关(Spearman r=-0.8671,P＜0.01,n=12),提示索拉非尼的药物敏感性与细胞基础pERK蛋白水平存在显著的相关性.结论 pERK可以作为一个潜在的生物标记物,预测索拉非尼对肝细胞癌的药物敏感性.     

利用噬菌体肽库筛选高转移潜能人肝癌细胞结合肽

目的筛选高转移潜能人肝癌细胞特异性结合肽。方法以高转移潜能人肝癌细胞系HCCLM3作为靶细胞，低转移潜能人肝癌细胞系MHCC97L为吸附细胞对噬菌体随机7肽库进行差减筛选，采用噬菌体结合实验和抗噬菌体免疫细胞化学染色对阳性克隆的特异性进行鉴定。结果经3轮筛选，随机挑选48个噬菌体克隆进行DNA序列分析，展示AWYPLPP肽的噬菌体被高度富集77％（37／48）；噬菌体结合实验显示，与低转移潜能人肝癌细胞系MHCC97L、PLC／PRE／5和无转移潜能入肝癌细胞系Hep3B以及正常入肝细胞系CCLl3相比，AWYPLPP噬菌体特异性与高转移潜能人肝癌细胞系HCCLM3、HCCLM6、MHCC97H和MHCC97结合（P〈0．01）；抗噬菌体免疫细胞化学染色证实AWYPLPP噬菌体特异性靶向高转移潜能人肝癌细胞系HCCLM3、HCCLM6、MHCC97H和MHCC97。结论从噬菌体肽库中获得与高转移潜能人肝癌细胞特异性结合肽，可作为肝癌转移复发靶向治疗研究的载体。     

miR-542-3p对肝癌细胞恶性生物学行为的影响及机制探讨

目的 探讨microRNA-542-3p(miR-542-3p)在人肝癌细胞系及组织中的表达水平及其对肝癌细胞增殖、侵袭转移能力的影响.方法 采用RT-PCR检测miR-542-3p在肝癌细胞系(HCCLM3、Hep3B、Huh7、SMMC-7721、MHCC-97H、MHCC-97L)以及人正常肝细胞LO2中的表达;...     

高转移潜能肝癌细胞株中凋亡相关蛋白的表达及意义

目的 探讨肝癌细胞转移潜能与凋亡敏感性之间的关系.方法 观察不同转移潜能的肝癌细胞株在肿瘤坏死因子-α(TNF-α)及依托泊苷(Etoposide)的作用下的凋亡发生率及Caspase3的活化,Western blot检测bcl-2及IAP家族蛋白在不同转移潜能肝癌细胞株中的表达.结果 TNF-α(10μg/L)作用后48 h,高转移潜能肝癌细胞株HCCLM3及转移能力最弱的肝癌细胞株SMMC-7721的凋亡率分别为(91.3±6.5)%及(58.8±2.3)%,MHCC97L细胞的凋亡率则位于两者之间(P≤0.01).Etoposide(250 μmol/L)作用后48 h,HCCLM3、MHCC97L及SMMC-772的凋亡发生率分别为(27.0±4.0)%、(34.6±3.8)%及(84.5±1.1)%(P≤0.01).3种细胞株中Caspase3的活性也有明显差异.bcl-2及IAP家族蛋白表达研究中发现XIAP的表达与肝癌细胞的转移潜能成梯度相关.结论 高转移潜能肝癌细胞株耐受多种凋亡刺激,可能与XIAP的过度表达相关.     

长链非编码RNA人去泛素化酶含有卵巢肿瘤结构域的6B反义RNA 1通过微小RNA-122-5p促进肝癌细胞增殖、侵袭和迁移的研究

目的探讨长链非编码RNA(lncRNA)人去泛素化酶含有卵巢肿瘤结构域的6B反义RNA 1(OTUD6B-AS1)通过微小RNA(microRNA,miR)-122-5p对肝癌细胞增殖、侵袭和迁移的影响。方法反转录-聚合酶链反应(RT-PCR)检测2010年1月至2013年1月河南科技大学第一附属医院手术切除的98例肝癌组织标本及其配对的癌旁组织、肝癌细胞系(Hhu7、Hep3B、HCCLM3、MHCC97H)和人正常肝细胞(LO2)中OTUD6B-AS1的相对表达量。用脂质体2000(Lipofectamine^TM2000)分别将sh-NC(sh-NC组)和sh-OTUD6B-AS1(sh-OTUD6B-AS1组)转染入Hep3B细胞。克隆形成实验和细胞计数试剂盒(CCK-8)法检测细胞增殖;Transwell检测细胞侵袭;细胞划痕实验检测细胞迁移。用TargetScan预测OTUD6B-AS1与miR-122-5p的互补结合位点,随后用双荧光素酶报告基因实验确定两者的靶向关系。为了进一步验证两者调控关系,将Hep3B细胞分别分为sh-NC+miR-NC组、sh-OTUD6B-AS1+miR-NC组、sh-OTUD6B-AS1+anti-miR-122-5p组,比较3组细胞增殖、侵袭和迁移。两两比较采用t检验;多组间比较采用单因素方差分析,进一步两两比较采用LSD-t检验;生存分析采用Log-rank检验。结果肝癌组织中OTUD6B-AS1相对表达量为2.42±0.96,明显高于癌旁组织(0.92±0.39,t=14.331,P<0.05),差异有统计学意义。肝癌细胞系Hhu7(2.84±0.23)、Hep3B(3.80±0.68)、HCCLM3(1.89±0.25)和MHCC97H(2.01±0.71)的OTUD6B-AS1相对表达量明显高于正常肝细胞LO2(1.04±0.23,F=51.827,P<0.05),差异有统计学意义。sh-OTUD6B-AS1组细胞增殖、侵袭和迁移能力均低于sh-NC组(t=5.556、2.454,P值均<0.05),差异均有统计学意义。双荧光素酶报告基因实验结果证实OTUD6B-AS1可以靶向调控miR-122-5p。sh-NC+miR-NC组和sh-OTUD6B-AS1+anti-miR-122-5p组增殖、侵袭和迁移能力明显高于sh-OTUD6B-AS1+miR-NC组(F=111.908、0.301,P值均<0.05),差异均有统计学意义。结论OTUD6B-AS1可能通过负调控miR-122-5p促进肝癌细胞的增殖、侵袭和迁移。     

骨桥蛋白在不同转移潜能肝癌细胞系及肝癌组织中表达意义

目的 研究不同转移潜能人肝癌细胞系及其肝癌组织中骨桥蛋白(OPN)表达情况,分析OPN表达与肝癌细胞侵袭转移潜能、肝癌术后复发转移的关系.方法 应用细胞免疫组化、半定量RT-PCR、Western Blot和ELISA检测不同转移潜能人肝癌细胞系SMMC-7721、MHCC97-L和HCCLM6 OPN表达情况.应用组织芯片、免疫组化检测200例肝癌组织中OPN表达.结果 OPN表达水平随着肝癌细胞侵袭转移潜能增加逐渐升高.肝癌组织中OPN表达与病人性别、年龄、血清AFP水平、肿瘤大小、有无包膜、细胞分化以及肝门淋巴结转移无明显相关性.而与肝癌TNM分期、门静脉癌栓和术后复发转移发生有明显相关(P<0.05).术后有复发转移病人的肝癌组织中66%表达OPN,而术后无复发转移病人的肝癌组织中仅37%表达OPN,两者比较差异具有显著性(P<0.05).结论 OPN表达与肝癌细胞细胞系侵袭转移潜能密切相关.肝癌组织中OPN表达可能是预测肝癌术后是否发生复发转移指标.     

Sonichedgehog在肝细胞癌中的表达及其预后价值

目的 探讨Sonic hedgehog(SHH)在肝细胞癌(HCC)和癌周肝组织中的表达及其临床意义.方法 检测145例HCC和癌周肝组织SHH的表达,了解其表达与患者根治性切除术后预后的关系.检测4种肝癌细胞株以及正常肝细胞株SHH mRNA的含量.结果 SHH主要表达于肝细胞和肝癌细胞的胞质,肝癌与癌周肝组织表达差异无统计学意义(P＞0.05).癌和癌周高表达的患者总体生存率显著高于低表达患者(P＜0.05).肝癌细胞株SHH表达量显著高于正常肝细胞株(P＜0.01).结论 SHH在HCC和癌周肝组织中高表达,其表达可用于区分患者预后,SHH可能参与HCC的发生和发展.     

基因芯片筛选人肝癌细胞株MHCC97中血管生成拟态相关基因

目的 通过观察三维培养条件下高、低转移人肝癌细胞株MHCC97-H、MHCC97-L形成血管生成拟态(VM)的差异,探讨VM形成与细胞外基质和粘连分子相关机制.方法 建立MHCC97-H、MHCC97-L三维培养体系,倒置显微镜下观察血管样结构形成差异.以人脐静脉内皮细胞、无转移人肝癌细胞株Hep3B及正常人肝细胞株HL-7702作对照.应用细胞外基质和粘连分子基因芯片筛选MHCC97-H和MHCC97-L中差异表达的基因,并采用RT-PCR和Western blot验证芯片的结果.组间比较采用两样本t检验.结果 三维培养24h,MHC097-H形成的血管样结构长度为(474±16)mm/cm2,MHCC97-L为(320±41)mm/cm2,两者比较,差异有统计学意义(t=6.119,P＜0.05).Hep3B及HL-7702均不形成血管样结构.在113个细胞外基质和粘连分子相关基因中,MHCC97-H表达较MHCC97-L上调的有7个,下调的有3个.选取差异性表达的腱糖蛋白-C和细胞外基质蛋白1经RT-PCR及Western blot验证,结果与基因芯片结果基本一致.结论 高转移人肝癌细胞株MHCC97-H体外形成VM能力明显较低转移人肝癌细胞株MHCC97-L强,其原因可能与MHCC97-H差异表达某些细胞外基质和粘连分子相关基因有关.     

稳定表达荧光的高转移人肝癌裸鼠模型的建立

目的 建立稳定表达红色或绿色荧光的人肝癌裸鼠转移模型.方法 用带红色或绿色荧光蛋白基因的假慢病毒感染人高转移潜能肝癌细胞HCCLM3,获得稳定表达红色或绿色荧光的新细胞系HCCLM3-R和HCCLM3-G.1×107细胞皮下接种、2 mm3组织块原位移植裸鼠,建立稳定表达荧光的人肝癌裸鼠转移模型.结果 皮下接种5只裸鼠和肝脏原位移植10只裸鼠肿瘤全部生长,经180 d裸鼠体内连续6次传代肿瘤荧光表达稳定,肝内播散、肺转移和腹腔转移检出率分别为100%、100%和90%.结论 采用HCCLM3-R、HCCLM3-G细胞所建立的荧光表达人肝癌裸鼠转移模型,是一个较理想的研究肝癌生长和转移的动物模型.