Decreased expression of B7 costimulatory molecules and major histocompatibility complex class-I in human hepatocellular carcinoma

Background and Aim:  We analyzed the expression of antigen‐processing and antigen‐presenting molecules in surgically resected fresh samples of human hepatocellular carcinoma (HCC) tissue to elucidate a mechanism of immune escape. We also examined the expression of interleukin (IL)‐10 protein, which...

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Veröffentlicht in:Journal of gastroenterology and hepatology 2004-10, Vol.19 (10), p.1121-1127
Hauptverfasser: FUJIWARA, KEISHI, HIGASHI, TOSHIHIRO, NOUSO, KAZUHIRO, NAKATSUKASA, HARUSHIGE, KOBAYASHI, YOSHIYUKI, UEMURA, MASAYUKI, NAKAMURA, SHIN-ICHIRO, SATO, SHUICHIRO, HANAFUSA, TADASHI, YUMOTO, YASUHIRO, NAITO, ICHIRO, SHIRATORI, YASUSHI
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container_end_page 1127
container_issue 10
container_start_page 1121
container_title Journal of gastroenterology and hepatology
container_volume 19
creator FUJIWARA, KEISHI
HIGASHI, TOSHIHIRO
NOUSO, KAZUHIRO
NAKATSUKASA, HARUSHIGE
KOBAYASHI, YOSHIYUKI
UEMURA, MASAYUKI
NAKAMURA, SHIN-ICHIRO
SATO, SHUICHIRO
HANAFUSA, TADASHI
YUMOTO, YASUHIRO
NAITO, ICHIRO
SHIRATORI, YASUSHI
description Background and Aim:  We analyzed the expression of antigen‐processing and antigen‐presenting molecules in surgically resected fresh samples of human hepatocellular carcinoma (HCC) tissue to elucidate a mechanism of immune escape. We also examined the expression of interleukin (IL)‐10 protein, which might act to downregulate expression of antigen‐processing and antigen‐presenting molecules. Methods:  Twenty‐eight HCC samples obtained by surgical resection were analyzed for the expression of β2‐microglobulin, heat‐shock protein (HSP)‐70, human leukocyte antigen (HLA) class‐I, CD80 (B7‐1), CD86 (B7‐2) and IL‐10 by immunostaining. Results:  β2‐Microglobulin and HSP‐70 were preserved in all samples. In contrast, the expression of HLA class‐I molecules was significantly reduced according to lowering in the histological grading of tumor differentiation (P = 0.024). Furthermore, B7‐1 and B7‐2 expression was reduced in tumor cells compared with corresponding areas of liver tissue without malignant involvement irrespective of the histological grading of tumors (21% and 36%, respectively). Although IL‐10 protein was expressed in 54% of HCC, no relationship between the expression of IL‐10 and downregulation of B7‐1, B7‐2, and HLA class‐I was evident. Conclusion:  These findings suggest the potential role of B7 co‐stimulatory molecules and HLA class‐I molecules in facilitating HCC escape from immune surveillance without the involvement of IL‐10.
doi_str_mv 10.1111/j.1440-1746.2004.03467.x
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We also examined the expression of interleukin (IL)‐10 protein, which might act to downregulate expression of antigen‐processing and antigen‐presenting molecules. Methods:  Twenty‐eight HCC samples obtained by surgical resection were analyzed for the expression of β2‐microglobulin, heat‐shock protein (HSP)‐70, human leukocyte antigen (HLA) class‐I, CD80 (B7‐1), CD86 (B7‐2) and IL‐10 by immunostaining. Results:  β2‐Microglobulin and HSP‐70 were preserved in all samples. In contrast, the expression of HLA class‐I molecules was significantly reduced according to lowering in the histological grading of tumor differentiation (P = 0.024). Furthermore, B7‐1 and B7‐2 expression was reduced in tumor cells compared with corresponding areas of liver tissue without malignant involvement irrespective of the histological grading of tumors (21% and 36%, respectively). Although IL‐10 protein was expressed in 54% of HCC, no relationship between the expression of IL‐10 and downregulation of B7‐1, B7‐2, and HLA class‐I was evident. Conclusion:  These findings suggest the potential role of B7 co‐stimulatory molecules and HLA class‐I molecules in facilitating HCC escape from immune surveillance without the involvement of IL‐10.</description><identifier>ISSN: 0815-9319</identifier><identifier>EISSN: 1440-1746</identifier><identifier>DOI: 10.1111/j.1440-1746.2004.03467.x</identifier><identifier>PMID: 15377288</identifier><language>eng</language><publisher>Melbourne, Australia: Blackwell Science Pty</publisher><subject>Aged ; B7-1 Antigen - biosynthesis ; beta 2-Microglobulin - biosynthesis ; beta 2-Microglobulin - immunology ; Biological and medical sciences ; Carcinoma, Hepatocellular - immunology ; Female ; Gastroenterology. Liver. Pancreas. Abdomen ; Genes, MHC Class I - immunology ; HSP70 Heat-Shock Proteins - biosynthesis ; HSP70 Heat-Shock Proteins - immunology ; Humans ; immune tolerance ; Interleukin-10 - biosynthesis ; Interleukin-10 - immunology ; liver ; Liver Neoplasms - immunology ; Liver. Biliary tract. Portal circulation. 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Liver. Pancreas. Abdomen</topic><topic>Genes, MHC Class I - immunology</topic><topic>HSP70 Heat-Shock Proteins - biosynthesis</topic><topic>HSP70 Heat-Shock Proteins - immunology</topic><topic>Humans</topic><topic>immune tolerance</topic><topic>Interleukin-10 - biosynthesis</topic><topic>Interleukin-10 - immunology</topic><topic>liver</topic><topic>Liver Neoplasms - immunology</topic><topic>Liver. Biliary tract. Portal circulation. 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We also examined the expression of interleukin (IL)‐10 protein, which might act to downregulate expression of antigen‐processing and antigen‐presenting molecules. Methods:  Twenty‐eight HCC samples obtained by surgical resection were analyzed for the expression of β2‐microglobulin, heat‐shock protein (HSP)‐70, human leukocyte antigen (HLA) class‐I, CD80 (B7‐1), CD86 (B7‐2) and IL‐10 by immunostaining. Results:  β2‐Microglobulin and HSP‐70 were preserved in all samples. In contrast, the expression of HLA class‐I molecules was significantly reduced according to lowering in the histological grading of tumor differentiation (P = 0.024). Furthermore, B7‐1 and B7‐2 expression was reduced in tumor cells compared with corresponding areas of liver tissue without malignant involvement irrespective of the histological grading of tumors (21% and 36%, respectively). Although IL‐10 protein was expressed in 54% of HCC, no relationship between the expression of IL‐10 and downregulation of B7‐1, B7‐2, and HLA class‐I was evident. Conclusion:  These findings suggest the potential role of B7 co‐stimulatory molecules and HLA class‐I molecules in facilitating HCC escape from immune surveillance without the involvement of IL‐10.</abstract><cop>Melbourne, Australia</cop><pub>Blackwell Science Pty</pub><pmid>15377288</pmid><doi>10.1111/j.1440-1746.2004.03467.x</doi><tpages>7</tpages></addata></record>
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subjects Aged
B7-1 Antigen - biosynthesis
beta 2-Microglobulin - biosynthesis
beta 2-Microglobulin - immunology
Biological and medical sciences
Carcinoma, Hepatocellular - immunology
Female
Gastroenterology. Liver. Pancreas. Abdomen
Genes, MHC Class I - immunology
HSP70 Heat-Shock Proteins - biosynthesis
HSP70 Heat-Shock Proteins - immunology
Humans
immune tolerance
Interleukin-10 - biosynthesis
Interleukin-10 - immunology
liver
Liver Neoplasms - immunology
Liver. Biliary tract. Portal circulation. Exocrine pancreas
Male
Medical sciences
neoplasm
tumor escape
Tumors
title Decreased expression of B7 costimulatory molecules and major histocompatibility complex class-I in human hepatocellular carcinoma
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