Objective The cellular apoptosis susceptibility(CAS) protein plays a regulatory role in the induction of cell death in tumor cells. The objective of this study was to investigate the association of the expression of C...Objective The cellular apoptosis susceptibility(CAS) protein plays a regulatory role in the induction of cell death in tumor cells. The objective of this study was to investigate the association of the expression of CAS protein with HBV infection in the development of HCC. Methods The expression level of CAS was measured with immunohistochemistry. The occurrence of HBs Ag, HBe Ag and HBV DNA in HCC were concurrently examined with immunohistochemistry and in situ hybridization, respectively. Results The results showed that the CAS protein was detected in 86%(43/50), 70%(7/10), 15%(3/20) and none(0/20) of livers from patients with HCC, cholangiocarcinoma, cirrhosis and hepatitis, respectively. Furthermore, the level of CAS protein was higher in poorly differentiated tumors than moderately or well differentiated HCC. Interestingly, the CAS was stained significantly stronger in HBV-infected HCC than in non-HBV infected tissues(P < 0.01). Conclusions The expression of CAS is facilitated by HBV infection in HCC, suggesting that CAS might be a prognostic marker and a putative therapeutic target for HCC.展开更多
凋亡蛋白抑制因子（inhibitor of apoptosis protein,IAP）是一类重要的抗细胞凋亡因子,与肿瘤的发生和发展密切相关.Livin是新近发现的IAP家族成员,主要通过抑制Caspases途径等机制发挥强大的抗凋亡能力,不仅特异性高表达于人的胚胎组...凋亡蛋白抑制因子（inhibitor of apoptosis protein,IAP）是一类重要的抗细胞凋亡因子,与肿瘤的发生和发展密切相关.Livin是新近发现的IAP家族成员,主要通过抑制Caspases途径等机制发挥强大的抗凋亡能力,不仅特异性高表达于人的胚胎组织及大多数人类肿瘤组织,在一些非肿瘤性疾病中也发现其异常表达.下调Livin的表达能够增加细胞凋亡率、抑制肿瘤生长和增加肿瘤细胞对化疗药物的敏感性.Livin的特异性表达有可能为这些疾病的早期诊断和基因、蛋白、免疫靶向治疗提供新方向.展开更多
文摘Objective The cellular apoptosis susceptibility(CAS) protein plays a regulatory role in the induction of cell death in tumor cells. The objective of this study was to investigate the association of the expression of CAS protein with HBV infection in the development of HCC. Methods The expression level of CAS was measured with immunohistochemistry. The occurrence of HBs Ag, HBe Ag and HBV DNA in HCC were concurrently examined with immunohistochemistry and in situ hybridization, respectively. Results The results showed that the CAS protein was detected in 86%(43/50), 70%(7/10), 15%(3/20) and none(0/20) of livers from patients with HCC, cholangiocarcinoma, cirrhosis and hepatitis, respectively. Furthermore, the level of CAS protein was higher in poorly differentiated tumors than moderately or well differentiated HCC. Interestingly, the CAS was stained significantly stronger in HBV-infected HCC than in non-HBV infected tissues(P < 0.01). Conclusions The expression of CAS is facilitated by HBV infection in HCC, suggesting that CAS might be a prognostic marker and a putative therapeutic target for HCC.
文摘凋亡蛋白抑制因子（inhibitor of apoptosis protein,IAP）是一类重要的抗细胞凋亡因子,与肿瘤的发生和发展密切相关.Livin是新近发现的IAP家族成员,主要通过抑制Caspases途径等机制发挥强大的抗凋亡能力,不仅特异性高表达于人的胚胎组织及大多数人类肿瘤组织,在一些非肿瘤性疾病中也发现其异常表达.下调Livin的表达能够增加细胞凋亡率、抑制肿瘤生长和增加肿瘤细胞对化疗药物的敏感性.Livin的特异性表达有可能为这些疾病的早期诊断和基因、蛋白、免疫靶向治疗提供新方向.
