Purpose: Alteration of liver function during pro- gression of hepatocellular carcinoma (HCC) and cirrhosis affects the serum glycoprotein pattern. In this study, the changes in the N-glycome in liver tis- sue from pat...Purpose: Alteration of liver function during pro- gression of hepatocellular carcinoma (HCC) and cirrhosis affects the serum glycoprotein pattern. In this study, the changes in the N-glycome in liver tis- sue from patients with hepatocellular carcinoma and cirrhosis caused by hepatitis B virus infection were investigated to find out the relationship between this maker and liver disease. Methods: Twenty patients, 11 with cirrhosis and 9 with hepatocellular carcinoma, and 15 healthy donors were involved in this study. Liver protein N-glycans were profiled using the DSA-FACE technique developed in our laboratory. To further analyze the fucosylation status of these liver glycans Western lectin blots of total liver proteins were performed using Aspergillus oryzae lectin (AOL) as probe, which is a carbohydrate- binding protein that recognizes specifically α-1,6-fu- cosylated glycans. Results: The N-glycome of liver proteins in patients with HBV related HCC and cirrhosis was analyzed. Compared with healthy donors, the N-glycome had significantly less (p < 0.05) high mannose (M8) in both groups of patients. The total core α-1,6-fucosy-lation in total liver glycoproteins was dramatically increased during the progress of hepatocellular carcinoma and cirrhosis compared to the controls. Conclusion: These results show that fucosylation not only increases in serum proteins but also in liver tissue itself of patients with HBV related HCC and cirrhosis.展开更多
The choroid plexus is a complex structure which hangs inside the ventricles of the brain and consists mainly of choroid plexus epithelial(CPE) cells surrounding fenestrated capillaries.These CPE cells not only form ...The choroid plexus is a complex structure which hangs inside the ventricles of the brain and consists mainly of choroid plexus epithelial(CPE) cells surrounding fenestrated capillaries.These CPE cells not only form an anatomical barrier,called the blood-cerebrospinal fluid barrier(BCSFB),but also present an active interface between blood and cerebrospinal fluid(CSF).CPE cells perform indispensable functions for the development,maintenance and functioning of the brain.Indeed,the primary role of the choroid plexus in the brain is to maintain homeostasis by secreting CSF which contains different molecules,such as nutrients,neurotrophins,and growth factors,as well as by clearing toxic and undesirable molecules from CSF.The choroid plexus also acts as a selective entry gate for leukocytes into the brain.Recent findings have revealed distinct changes in CPE cells that are associated with aging and Alzheimer's disease.In this review,we review some recent findings that highlight the importance of the CPE-CSF system in Alzheimer's disease and we summarize the recent advances in the regeneration of brain tissue through use of CPE cells as a new therapeutic strategy.展开更多
文摘Purpose: Alteration of liver function during pro- gression of hepatocellular carcinoma (HCC) and cirrhosis affects the serum glycoprotein pattern. In this study, the changes in the N-glycome in liver tis- sue from patients with hepatocellular carcinoma and cirrhosis caused by hepatitis B virus infection were investigated to find out the relationship between this maker and liver disease. Methods: Twenty patients, 11 with cirrhosis and 9 with hepatocellular carcinoma, and 15 healthy donors were involved in this study. Liver protein N-glycans were profiled using the DSA-FACE technique developed in our laboratory. To further analyze the fucosylation status of these liver glycans Western lectin blots of total liver proteins were performed using Aspergillus oryzae lectin (AOL) as probe, which is a carbohydrate- binding protein that recognizes specifically α-1,6-fu- cosylated glycans. Results: The N-glycome of liver proteins in patients with HBV related HCC and cirrhosis was analyzed. Compared with healthy donors, the N-glycome had significantly less (p < 0.05) high mannose (M8) in both groups of patients. The total core α-1,6-fucosy-lation in total liver glycoproteins was dramatically increased during the progress of hepatocellular carcinoma and cirrhosis compared to the controls. Conclusion: These results show that fucosylation not only increases in serum proteins but also in liver tissue itself of patients with HBV related HCC and cirrhosis.
基金supported by the Research Foundation-Flanders (FWO)the Concerted Research Actions (GOA) of Ghent University+2 种基金the Belgian Science Policy (Interuniversity Attraction Pools-IAP7/07)the Belgain Foundation of Alzheimer's Researoh (SAO)the Ministry of Education,Science and Technological Development of the Republic of Serbia (Grant ON173056) and COST Action BM1402
文摘The choroid plexus is a complex structure which hangs inside the ventricles of the brain and consists mainly of choroid plexus epithelial(CPE) cells surrounding fenestrated capillaries.These CPE cells not only form an anatomical barrier,called the blood-cerebrospinal fluid barrier(BCSFB),but also present an active interface between blood and cerebrospinal fluid(CSF).CPE cells perform indispensable functions for the development,maintenance and functioning of the brain.Indeed,the primary role of the choroid plexus in the brain is to maintain homeostasis by secreting CSF which contains different molecules,such as nutrients,neurotrophins,and growth factors,as well as by clearing toxic and undesirable molecules from CSF.The choroid plexus also acts as a selective entry gate for leukocytes into the brain.Recent findings have revealed distinct changes in CPE cells that are associated with aging and Alzheimer's disease.In this review,we review some recent findings that highlight the importance of the CPE-CSF system in Alzheimer's disease and we summarize the recent advances in the regeneration of brain tissue through use of CPE cells as a new therapeutic strategy.