肝细胞肝癌中组织蛋白酶D、H和L的表达

目的 检测人原发性肝细胞肝癌组织中组织蛋白酶D(CD)、组织蛋白酶H(CH)和组织蛋白酶L(CL)表达,探讨其作用与机制.方法 应用免疫组织化学法测定82例肝组织标本CD、CH和CL蛋白的表达,包括对照组17例,肝细胞肝癌(HCC)组37例和肝细胞肝癌癌旁组织(PTT)组28例,采用吸光度值分析其相对含量.数据采用SPSS 11.5软件统计分析,组间比较采用单因素方差分析.结果 HCC组CD(1.21±0.33)、CH(0.89±0.22)和CL蛋白(1.16±0.25)的平均吸光度值均明显高于对照组(分别为0.19±0.07,0.24±0.12和0.28±0.14)和PTT组(分别为0.27±0.13,0.31±0.14和0.36±0.15),差异有统计学意义(均P=0.0001),PTT组与对照组间3种蛋白表达均无明显差异(均P＞0.05).3种蛋白免疫组织化学表达形态显示,HCC组呈大量密集成弥漫性的点、片状深棕色满布整个细胞质,对照组和PTT组均仅见细胞质中有散在点状浅棕色分布.结论 人肝癌组织CD、CH和CL蛋白高表达,可能是反映原发性肝癌发生发展的重要标记物之一.

Abstract：

Objective To determine the expression of cathepsin D (CD), cathepsin H (CH) and cathepsin L (CL) in human primary hepatocellular carcinoma (HCC), and to investigate their mechanisms. Methods The protein expression of CD, CH and CL in hepatic specimens consisted of control (n = 17), HCC (n = 37) and paracancerous (n = 28) tissues were detected by immunohistochemistry. The relative values of CD, CH and CL protein expression were examined with absorbent density analysis. Data were analyzed using SPSS11. 5 software. The univariate analysis was used to compare the difference among groups. Results The mean absorbance of CD, CH and CL proteins in HCC tissues (1.21± 0.33, 0. 89 ± 0.22 and 1.16± 0. 25, respectively) were significantly higher in comparison with those in control tissues (0. 19 ± 0. 07, 0. 24 ± 0. 12 and 0. 28 ± 0. 14,respectively) and in paracancerous tissues (0.27±0.13,0. 31± 0.14 and 0. 36±0.15)(all P values =0.0001). Whereas there was no difference between control and paracancerous tissues with respect to CD, CH and CL proteins (P ＞0. 05). Three proteins immunohistochemically appeared as a lot of diffused spots and stripes staining in cytoplasma of HCC tissues,but only a few scatted spots staining was found in control and paracancerous tissues. Conclusion The high expression of CD, CH and CL protein in primary HCC may be important markers for carcinogenesis and malignant progress.

The expressions of cathepsin D,H and L in hepatocellular carcinoma

Objective To determine the expression of cathepsin D (CD), cathepsin H (CH) and cathepsin L (CL) in human primary hepatocellular carcinoma (HCC), and to investigate their mechanisms. Methods The protein expression of CD, CH and CL in hepatic specimens consisted of control (n = 17), HCC (n = 37) and paracancerous (n = 28) tissues were detected by immunohistochemistry. The relative values of CD, CH and CL protein expression were examined with absorbent density analysis. Data were analyzed using SPSS11. 5 software. The univariate analysis was used to compare the difference among groups. Results The mean absorbance of CD, CH and CL proteins in HCC tissues (1.21± 0.33, 0. 89 ± 0.22 and 1.16± 0. 25, respectively) were significantly higher in comparison with those in control tissues (0. 19 ± 0. 07, 0. 24 ± 0. 12 and 0. 28 ± 0. 14,respectively) and in paracancerous tissues (0.27±0.13,0. 31± 0.14 and 0. 36±0.15)(all P values =0.0001). Whereas there was no difference between control and paracancerous tissues with respect to CD, CH and CL proteins (P ＞0. 05). Three proteins immunohistochemically appeared as a lot of diffused spots and stripes staining in cytoplasma of HCC tissues,but only a few scatted spots staining was found in control and paracancerous tissues. Conclusion The high expression of CD, CH and CL protein in primary HCC may be important markers for carcinogenesis and malignant progress.