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HCV core protein plays important roles in HCV-related hepatocarcinogenesis, because mice carrying the core protein exhibit multicentric HCCs without hepatic inflammation and fibrosis. However, the precise mechanism of hepatocarcinogenesis in these transgenic mice remains unclear. To evaluate whether the core protein modulates hepatocyte proliferation and apoptosis in vivo, we examined these parameters in 9- and 22-month-old transgenic mice. Although the numbers of apoptotic hepatocytes and hepatic caspase 3 activities were similar between transgenic and nontransgenic mice, the numbers of proliferating hepatocytes and the levels of numerous proteins such as cyclin D1, cyclin-dependent kinase 4 and c-Myc, were markedly increased in an age-dependent manner in the transgenic mice. This increase was correlated with the activation of peroxisome proliferator-activated receptor alpha (PPAR alpha). In these transgenic mice, spontaneous and persistent PPAR alpha activation occurred heterogeneously, which was different from that observed in mice treated with clofibrate, a potent peroxisome proliferator. We further demonstrated that stabilization of PPAR alpha through a possible interaction with HCV core protein and an increase in nonesterified fatty acids, which may serve as endogenous PPAR alpha ligands, in hepatocyte nuclei contributed to the core protein-specific PPAR alpha activation. In conclusion, these results offer the first suggestion that HCV core protein induces spontaneous, persistent, age-dependent and heterogeneous activation of PPAR alpha in transgenic mice, which may contribute to the age-dependent and multicentric hepatocarcinogenesis mediated by the core protein. (C) 2007 Wiley-Liss, Inc."}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tanaka,  N", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "8508", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Moriya,  K", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "8509", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kiyosawa,  K", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "8510", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Koike,  K", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "8511", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Aoyama,  T", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "8512", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2015-09-24"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "ManuscriptR200705.pdf", "filesize": [{"value": "309.9 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 309900.0, "url": {"label": "ManuscriptR200705.pdf", "url": "https://soar-ir.repo.nii.ac.jp/record/3999/files/ManuscriptR200705.pdf"}, "version_id": "1e77e1e9-79cc-4c6f-b5f2-4c9c4c3800de"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Hepatitis C virus core protein induces spontaneous and persistent activation of peroxisome proliferator-activated receptor alpha in transgenic mice: Implications for HCV-associated hepatocarcinogenesis", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "Hepatitis C virus core protein induces spontaneous and persistent activation of peroxisome proliferator-activated receptor alpha in transgenic mice: Implications for HCV-associated hepatocarcinogenesis", "subitem_title_language": "en"}]}, "item_type_id": "6", "owner": "1", "path": ["461/462"], "permalink_uri": "http://hdl.handle.net/10091/930", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2008-01-21"}, "publish_date": "2008-01-21", "publish_status": "0", "recid": "3999", "relation": {}, "relation_version_is_last": true, "title": ["Hepatitis C virus core protein induces spontaneous and persistent activation of peroxisome proliferator-activated receptor alpha in transgenic mice: Implications for HCV-associated hepatocarcinogenesis"], "weko_shared_id": -1}