目的研究婆罗双树样基因2(SALL2)在口腔肿瘤中的表达,探究其对口腔肿瘤细胞增殖、迁移能力的影响。方法构建SALL2基因过表达及敲低的口腔肿瘤(SCC-3)细胞株,通过MTT实验、细胞划痕实验观察细胞增殖、迁移的变化;收集15组口腔肿瘤组织与...目的研究婆罗双树样基因2(SALL2)在口腔肿瘤中的表达,探究其对口腔肿瘤细胞增殖、迁移能力的影响。方法构建SALL2基因过表达及敲低的口腔肿瘤(SCC-3)细胞株,通过MTT实验、细胞划痕实验观察细胞增殖、迁移的变化;收集15组口腔肿瘤组织与瘤旁组织,应用QRTPCR法检测组织中SALL2 m RNA的表达。结果细胞划痕试验与MTT实验结果表明过表达SALL2基因可降低细胞增殖、迁移能力,敲低SALL2基因可增强细胞增殖、迁移能力;SALL2基因在口腔肿瘤中的表达明显低于正常口腔组织(P<0.05)。结论 SALL2基因在口腔肿瘤细胞及组织中低表达,可抑制肿瘤细胞的增殖、迁移,可能作为口腔肿瘤的早期诊断和预后判断的早期指标。展开更多
AIM: To detect the expression of sal-like protein 4(SALL4) and to explore its relationship with clinicopathological characteristics and prognosis of hepatocellular carcinoma(HCC).METHODS: One hundred and twenty-six sa...AIM: To detect the expression of sal-like protein 4(SALL4) and to explore its relationship with clinicopathological characteristics and prognosis of hepatocellular carcinoma(HCC).METHODS: One hundred and twenty-six samples of HCC tissue, 44 of adjacent noncancerous cirrhotic tissue and 10 of liver hemangioma tissue, were obtained from patients who underwent hepatectomy for HCC at the Fourth Hospital of Hebei Medical University. None of the patients had received any form of treatment before the operation. After resection, all the tissues were fixed in 10% neutral formaldehyde and embedded in paraffin. Expression of SALL4 was detected by immunohistochemistry. Patients were followed up for postoperative survival until February 2014. The relationships between SALL4 expression level and clinicopathological data and prognosis of HCC were analyzed. RESULTS: SALL4 expression was negative in the 10 samples of tissue from liver hemangioma, was weakly positive in the two samples from adjacent noncancerous cirrhotic tissue, and positive in 58 samples of HCC tissues. The differences were statistically significant(P < 0.05). Expression of SALL4 was higher in patients with higher α-fetoprotein(AFP) levels, portal vein tumor thrombus, and later clinical stage based on the Barcelona Clinic Liver Cancer classification(P < 0.05). Among patients with negative expression, weakly positive expression, positive expression, and strongly positive expression of SALL4, the median survival time was 39, 25, 23, and 9 mo, respectively(P < 0.001). When both AFP and SALL4 were detected, patients who were negative for both AFP and SALL4, SALL4-positive only, AFP-positive only, and positive for both AFP and SALL4, had a median survival time of 41, 38, 31, and 12 mo, respectively(P < 0.001).CONCLUSION: Expression of SALL4 is relevant to the prognosis of HCC patients. Patients with higher expression levels of SALL4 and AFP have worse prognosis.展开更多
目的:探讨红景天苷(salidroside,SAL)对树突状细胞(dendritic cell,DC)表型及细胞毒性T细胞(cytotoxic T lymphocyte,CTL)抗肿瘤能力的影响。方法:选用Lewis肺癌细胞株3LL、野生型C57BL/6和TLR4-/-C57BL/6小鼠,获取小鼠骨髓来源的DC前...目的:探讨红景天苷(salidroside,SAL)对树突状细胞(dendritic cell,DC)表型及细胞毒性T细胞(cytotoxic T lymphocyte,CTL)抗肿瘤能力的影响。方法:选用Lewis肺癌细胞株3LL、野生型C57BL/6和TLR4-/-C57BL/6小鼠,获取小鼠骨髓来源的DC前体细胞,经过培养分化成未成熟DC,收获第6天的DC,经磁珠分选后获得纯度较高的CD11c+DC。将细胞分成PBS组、SAL组和脂多糖(lipopolysaccharide,LPS)组,培养48 h后用流式细胞术检测SAL体外对DC表面分子、吞噬功能、TLR4通路和对T细胞杀伤能力的影响。结果:与PBS组比较,SAL组DC的表面分子CD80、CD86、MHCⅡ表达水平显著升高(均P<0.05)、吞噬功能显著下降(P<0.05)、TLR4表达水平显著升高(P<0.01);与野生型组比较,TLR4-/-组DC经SAL或LPS处理后,其表面分子CD80、CD86、MHCⅡ的表达水平显著降低(均P<0.05);与PBS组比较,SAL组刺激活化的CTL对肺癌3LL细胞的杀伤效应显著升高(P<0.05)。结论:SAL可以通过调控TLR4诱导DC成熟,从而提高T细胞的杀伤能力。展开更多
文摘目的研究婆罗双树样基因2(SALL2)在口腔肿瘤中的表达,探究其对口腔肿瘤细胞增殖、迁移能力的影响。方法构建SALL2基因过表达及敲低的口腔肿瘤(SCC-3)细胞株,通过MTT实验、细胞划痕实验观察细胞增殖、迁移的变化;收集15组口腔肿瘤组织与瘤旁组织,应用QRTPCR法检测组织中SALL2 m RNA的表达。结果细胞划痕试验与MTT实验结果表明过表达SALL2基因可降低细胞增殖、迁移能力,敲低SALL2基因可增强细胞增殖、迁移能力;SALL2基因在口腔肿瘤中的表达明显低于正常口腔组织(P<0.05)。结论 SALL2基因在口腔肿瘤细胞及组织中低表达,可抑制肿瘤细胞的增殖、迁移,可能作为口腔肿瘤的早期诊断和预后判断的早期指标。
基金Supported by the National Natural Science Foundation of China,No.81072966/H2902the Natural Science Foundation of Hebei Province,China,No.C2011206134
文摘AIM: To detect the expression of sal-like protein 4(SALL4) and to explore its relationship with clinicopathological characteristics and prognosis of hepatocellular carcinoma(HCC).METHODS: One hundred and twenty-six samples of HCC tissue, 44 of adjacent noncancerous cirrhotic tissue and 10 of liver hemangioma tissue, were obtained from patients who underwent hepatectomy for HCC at the Fourth Hospital of Hebei Medical University. None of the patients had received any form of treatment before the operation. After resection, all the tissues were fixed in 10% neutral formaldehyde and embedded in paraffin. Expression of SALL4 was detected by immunohistochemistry. Patients were followed up for postoperative survival until February 2014. The relationships between SALL4 expression level and clinicopathological data and prognosis of HCC were analyzed. RESULTS: SALL4 expression was negative in the 10 samples of tissue from liver hemangioma, was weakly positive in the two samples from adjacent noncancerous cirrhotic tissue, and positive in 58 samples of HCC tissues. The differences were statistically significant(P < 0.05). Expression of SALL4 was higher in patients with higher α-fetoprotein(AFP) levels, portal vein tumor thrombus, and later clinical stage based on the Barcelona Clinic Liver Cancer classification(P < 0.05). Among patients with negative expression, weakly positive expression, positive expression, and strongly positive expression of SALL4, the median survival time was 39, 25, 23, and 9 mo, respectively(P < 0.001). When both AFP and SALL4 were detected, patients who were negative for both AFP and SALL4, SALL4-positive only, AFP-positive only, and positive for both AFP and SALL4, had a median survival time of 41, 38, 31, and 12 mo, respectively(P < 0.001).CONCLUSION: Expression of SALL4 is relevant to the prognosis of HCC patients. Patients with higher expression levels of SALL4 and AFP have worse prognosis.
文摘目的:探讨红景天苷(salidroside,SAL)对树突状细胞(dendritic cell,DC)表型及细胞毒性T细胞(cytotoxic T lymphocyte,CTL)抗肿瘤能力的影响。方法:选用Lewis肺癌细胞株3LL、野生型C57BL/6和TLR4-/-C57BL/6小鼠,获取小鼠骨髓来源的DC前体细胞,经过培养分化成未成熟DC,收获第6天的DC,经磁珠分选后获得纯度较高的CD11c+DC。将细胞分成PBS组、SAL组和脂多糖(lipopolysaccharide,LPS)组,培养48 h后用流式细胞术检测SAL体外对DC表面分子、吞噬功能、TLR4通路和对T细胞杀伤能力的影响。结果:与PBS组比较,SAL组DC的表面分子CD80、CD86、MHCⅡ表达水平显著升高(均P<0.05)、吞噬功能显著下降(P<0.05)、TLR4表达水平显著升高(P<0.01);与野生型组比较,TLR4-/-组DC经SAL或LPS处理后,其表面分子CD80、CD86、MHCⅡ的表达水平显著降低(均P<0.05);与PBS组比较,SAL组刺激活化的CTL对肺癌3LL细胞的杀伤效应显著升高(P<0.05)。结论:SAL可以通过调控TLR4诱导DC成熟,从而提高T细胞的杀伤能力。
