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イタノ ナオキ
ITANO NAOKI
板野 直樹 所属 京都産業大学 生命科学部 先端生命科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2007/03 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Hyperproduction of hyaluronan in Neu-induced mammary tumor accelerates angiogenesis through stromal cell recruitment - Possible involvement of versican/PG-M |
| 執筆形態 | その他 |
| 掲載誌名 | AMERICAN JOURNAL OF PATHOLOGY |
| 出版社・発行元 | AMER SOC INVESTIGATIVE PATHOLOGY, INC |
| 巻・号・頁 | 170(3),pp.1086-1099 |
| 著者・共著者 | Hiroshi Koyama,Terumasa Hibi,Zenzo Isogai,Masahiko Yoneda,Minoru Fujimori,Jun Amano,Masatomo Kawakubo,Reiji Kannagi,Koji Kimata,Shun'ichiro Taniguchi,Naoki Itano |
| 概要 | Elevated concentrations of hyaluronan are often associated with human breast cancer malignancy. Here, we investigated the roles of hyaluronan in carcinogenesis and cancer progression using the mouse mammary tumor virus (MMTV)-Neu transgenic model of spontaneous breast cancer. Conditional transgenic mice that express murine hyaluronan synthase 2 (Has2) by Cre-mediated recombination were generated and crossed with the MMTV-Neu mice. In expressing Cre recombinase under the control of the MMTV promoter, the bigenic mice bearing Has2 and neu transgenes exhibited a deposition of hyaluronan matrix and aggressive growth of Neu-initiated mammary tumors. Notably, forced expression of Has2 impaired intercellular adhesion machinery and elicited cell survival signals in tumor cells. Concurrent with these alterations of tumor cells. intratumoral stroma and microvessels were markedly induced. To reveal the molecular basis of hyaluronan-mediated neovascularization, various hyaluronan samples were examined for their ability to potentiate in vivo angiogenesis. In Matrigel plug assays, basic fibroblast growth factor-induced neovascularization was elevated in the presence of either hyaluronan oligosaccharides or a hyaluronan aggregate containing versican. Administration of hyaluronan-versican aggregates, but not native hyaluronan alone, promoted stromal cell recruitment concurrently with the infiltration of endothelial cells. Taken together, these results suggest that hyaluronan overproduction accelerates tumor angiogenesis through stromal reaction, notably in the presence of versican. |
| DOI | 10.2353/ajpath.2007.060793 |
| ISSN | 0002-9440 |