Background:Intrahepatic cholangiocarcinoma(ICC)is a poorly understood and aggressive malignancy with increasing incidence and mortality.Hepatitis B virus(HBV)infection is recognized as one of the important risk factor...Background:Intrahepatic cholangiocarcinoma(ICC)is a poorly understood and aggressive malignancy with increasing incidence and mortality.Hepatitis B virus(HBV)infection is recognized as one of the important risk factors of ICC.There are few reports focusing on whether isolated antibody to hepatitis B core antigen(isolated anti-HBc,IAHBc)have prognostic role in ICC,while positive hepatitis B surface antigen(HBsAg)has been reported to be associated with the prognosis of ICC.The aim of this study was to investigate the prognostic value of IAHBc in ICC patients after curative resection,in order to identify those who have the high risk of ICC recurrence in the early stage.Methods:We divided 209 ICC patients who underwent curative resection into 4 groups:groupⅠ(n=40),HBsAg(-)/antibody to hepatitis B surface antigen(anti-HBs)(-)/anti-HBc(+);groupⅡ(n=70),HBsAg(+)/anti-HBc(-);groupⅢ(n=55),HBsAg(-)/anti-HBs(+)/anti-HBc(+);and groupⅣ(n=44),HBsAg(-)/anti-HBc(-).We compared the recurrence-free survival(RFS)and overall survival(OS)among these four groups.Results:The median follow-up time was 16.93 months(range 1-34.6 months).The 1-and 2-year RFS and OS rates were 60%and 42%,and 78%and 63%respectively in all patients.Compared to the whole non-IAHBc patients(groupⅡ+groupⅢ+groupⅣ),IAHBc patients(groupⅠ)showed significantly lower RFS at 1 year(39.8%vs.64.4%,P=0.001)and 2 years(20.7%vs.46.7%,P=0.001).When compared to other three individual groups,IAHBc patients(groupⅠ)also had the lowest RFS.We did not find significant difference in OS among the four groups.Further multivariate analysis revealed that IAHBc was an independent risk factor of RFS.Conclusions:IAHBc is an independent poor prognostic factor for tumor recurrence in ICC patients after curative resection.展开更多
AIM: To develop a hepatocyte cell line, we immortalized primary porcine hepatocytes with a retroviral vector SSR#69 containing the Simian Virus 40 T antigen (SV40T ag). METHODS: We first established a method of porcin...AIM: To develop a hepatocyte cell line, we immortalized primary porcine hepatocytes with a retroviral vector SSR#69 containing the Simian Virus 40 T antigen (SV40T ag). METHODS: We first established a method of porcine hepatocyte isolation with a modified four-step retrograde perfusion technique. Then the porcine hepatocytes were immortalized with retroviral vector SSR#69 expressing SV40T and hygromycin-resistance genes flanked by paired loxP recombination targets. SV40T cDNA in the expanded cells was subsequently excised by Cre/LoxP site-specific recombination. RESULTS: The resultant hepatocytes with high viability (97%) were successfully immortalized with retroviral vector SSR#69. One of the immortalized clones showed the typical morphological appearance, TJPH-1, and was selected by clone rings and expanded in culture. After excision of the SV40T gene with Cre-recombinase, cells stopped growing. The population of reverted cells exhibited the characteristics of differentiated hepatocytes. CONCLUSION: In conclusion, we herein describe a modified method of hepatocyte isolation and subsequently established a porcine hepatocyte cell line mediated by retroviral transfer and site-specific recombination.展开更多
基金supported by grants from the National Natural Science Foundation of China(82027803)Chinese Academy of Engineering Consulting Project(2019-ZD-06)Zhejiang University School of Medicine(jgzd20201006)。
文摘Background:Intrahepatic cholangiocarcinoma(ICC)is a poorly understood and aggressive malignancy with increasing incidence and mortality.Hepatitis B virus(HBV)infection is recognized as one of the important risk factors of ICC.There are few reports focusing on whether isolated antibody to hepatitis B core antigen(isolated anti-HBc,IAHBc)have prognostic role in ICC,while positive hepatitis B surface antigen(HBsAg)has been reported to be associated with the prognosis of ICC.The aim of this study was to investigate the prognostic value of IAHBc in ICC patients after curative resection,in order to identify those who have the high risk of ICC recurrence in the early stage.Methods:We divided 209 ICC patients who underwent curative resection into 4 groups:groupⅠ(n=40),HBsAg(-)/antibody to hepatitis B surface antigen(anti-HBs)(-)/anti-HBc(+);groupⅡ(n=70),HBsAg(+)/anti-HBc(-);groupⅢ(n=55),HBsAg(-)/anti-HBs(+)/anti-HBc(+);and groupⅣ(n=44),HBsAg(-)/anti-HBc(-).We compared the recurrence-free survival(RFS)and overall survival(OS)among these four groups.Results:The median follow-up time was 16.93 months(range 1-34.6 months).The 1-and 2-year RFS and OS rates were 60%and 42%,and 78%and 63%respectively in all patients.Compared to the whole non-IAHBc patients(groupⅡ+groupⅢ+groupⅣ),IAHBc patients(groupⅠ)showed significantly lower RFS at 1 year(39.8%vs.64.4%,P=0.001)and 2 years(20.7%vs.46.7%,P=0.001).When compared to other three individual groups,IAHBc patients(groupⅠ)also had the lowest RFS.We did not find significant difference in OS among the four groups.Further multivariate analysis revealed that IAHBc was an independent risk factor of RFS.Conclusions:IAHBc is an independent poor prognostic factor for tumor recurrence in ICC patients after curative resection.
基金Supported by The Major Scientific and Technological Project of Hubei Province, No. 2007ABD005
文摘AIM: To develop a hepatocyte cell line, we immortalized primary porcine hepatocytes with a retroviral vector SSR#69 containing the Simian Virus 40 T antigen (SV40T ag). METHODS: We first established a method of porcine hepatocyte isolation with a modified four-step retrograde perfusion technique. Then the porcine hepatocytes were immortalized with retroviral vector SSR#69 expressing SV40T and hygromycin-resistance genes flanked by paired loxP recombination targets. SV40T cDNA in the expanded cells was subsequently excised by Cre/LoxP site-specific recombination. RESULTS: The resultant hepatocytes with high viability (97%) were successfully immortalized with retroviral vector SSR#69. One of the immortalized clones showed the typical morphological appearance, TJPH-1, and was selected by clone rings and expanded in culture. After excision of the SV40T gene with Cre-recombinase, cells stopped growing. The population of reverted cells exhibited the characteristics of differentiated hepatocytes. CONCLUSION: In conclusion, we herein describe a modified method of hepatocyte isolation and subsequently established a porcine hepatocyte cell line mediated by retroviral transfer and site-specific recombination.
