E-cadherin反义寡核苷酸对肿瘤细胞浸润能力影响的研究

目的 了解上皮型钙黏附分子（E—cadherin）下调对肿瘤细胞浸润能力的影响。方法 选用人胰腺癌细胞株JHP-1，经E—cadherin反义寡核苷酸（ASODN）作用，应用免疫细胞化学染色、Westernblot法检测细胞E—cadhefin蛋白表达情况，细胞浸润MTT比色法检测该细胞对基底膜的浸润能力。结果 经E—cadherinASODN作用后，JHP-1细胞膜E—cadherin表达减弱，E—cadherin蛋白含量与对照组相比明显降低；JHP-1细胞对基底膜浸润能力明显高于对照组（P〈0．001）。结论 E—cadherin与肿瘤细胞的浸润能力有关。

Study of E-cadherin Antisense Oligodeoxynucleotide on Invasive Ability of Tumor Cells

Objective To study the effect of down-regulation of E-cadherin on the invasion ability of tumor cells.Methods Human pancreatic carcinoma cell line JHP-1 was treated with E-cadherin antisense oligodeoxynucleotied(ASODN).The immunocytochemistry,Western blot were used to detect the expression and the contents of(E-cadherin) in the tumor cells,and the invasive ability of tumor cells were evaluated by invasive-MTT assay.Results Treated with E-cadherin ASODN,the expression of E-cadherin on JHP-1 cells were reduced,and the protein contents were decreased as well compared with control groups and ODN group.The invasive ability of JHP-1 cells to the basement membrane was increased(P<0.001) compared with ODN group and control group.Conclusion(E-cadherin) was related to the invasive ability of tumor cells.