PMID- 19331200 OWN - NLM STAT- MEDLINE DCOM- 20090407 LR - 20090331 IS - 0250-7005 (Print) IS - 0250-7005 (Linking) VI - 29 IP - 2 DP - 2009 Feb TI - Concomitant overexpression of heat-shock protein 70 and HLA class-I in hepatitis C virus-related hepatocellular carcinoma. PG - 539-44 AB - BACKGROUND: Human leukocyte antigen (HLA) class I expression is reportedly frequently reduced in cancer. We examined heat-shock protein (HSP) expression in hepatocellular carcinoma (HCC). PATIENTS AND METHODS: HCV-related HCC was examined in 73 patients who had undergone hepatectomy, and the relationship between HSP70 and HLA class I expressions, clinicopathological factors and survival was evaluated. RESULTS: Immunohistochemically positive results for HSP70 and HLA class I were seen in 67 (92%) and 43 cases (59%), respectively, while 38 patients (52%) were positive for both. Increased HSP70 immunoreactivity was significantly associated with high histological grade of tumor differentiation (p = 0.0179), whereas reduced HLA class I immunoreactivity was significantly associated with large tumor size (p = 0.0082). No differences were apparent between disease-free and overall survival in regard to expression levels. CONCLUSION: These results suggest that HSP70 expression may be related to tumor differentiation and HLA class I loss may occur with tumor growth in HCV-related HCC. FAU - Yoshida, Shin AU - Yoshida S AD - Department of Digestive Surgery and Surgical Oncology (Department of Surgery II), Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan. FAU - Hazama, Shoichi AU - Hazama S FAU - Tokuno, Kazuhisa AU - Tokuno K FAU - Sakamoto, Kazuhiko AU - Sakamoto K FAU - Takashima, Motonari AU - Takashima M FAU - Tamesa, Takao AU - Tamesa T FAU - Torigoe, Toshihiko AU - Torigoe T FAU - Sato, Noriyuki AU - Sato N FAU - Oka, Masaaki AU - Oka M LA - eng PT - Journal Article PL - Greece TA - Anticancer Res JT - Anticancer research JID - 8102988 RN - 0 (HLA Antigens) RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Aged MH - Aged, 80 and over MH - Carcinoma, Hepatocellular/immunology/*metabolism/pathology/virology MH - Female MH - HLA Antigens/*biosynthesis MH - HSP70 Heat-Shock Proteins/*biosynthesis MH - Hepacivirus/*isolation & purification MH - Hepatitis C/immunology/*metabolism/pathology MH - Histocompatibility Antigens Class I/*biosynthesis MH - Humans MH - Immunohistochemistry MH - Liver Neoplasms/immunology/*metabolism/pathology/virology MH - Male MH - Middle Aged EDAT- 2009/04/01 09:00 MHDA- 2009/04/08 09:00 CRDT- 2009/04/01 09:00 PHST- 2009/04/01 09:00 [entrez] PHST- 2009/04/01 09:00 [pubmed] PHST- 2009/04/08 09:00 [medline] PST - ppublish SO - Anticancer Res. 2009 Feb;29(2):539-44.