キタハラ　シユウジ   KITAHARA Shuji   北原　秀治    所属   研究施設 研究施設    職種   特任准教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Alteration of angiogenic patterns on B16BL6 melanoma development promoted in Matrigel.
掲載誌名	正式名：Medical molecular morphology 略　 称：Med Mol Morphol ISSNコード：18601499/18601499
掲載区分	国外
巻・号・頁	43(1),pp.26-36
著者・共著者	Kitahara Shuji, Morikawa Shunichi, Shimizu Kazuhiko, Abe Hiroyuki, Ezaki Taichi
発行年月	2010/03
概要	Because the progression and metastasis of solid tumors depend on their local microcirculation, we sought to characterize tumor angiogenesis three dimensionally in a highly metastatic mouse melanoma model, B16BL6 (B16), injected with Matrigel into the subcutis in the skin on the back of syngeneic C57BL/6 mice. We found that B16 with Matrigel grew significantly faster than B16 alone and had altered tumor angiogenesis. Tumor vessels apparently grew vigorously in the opposite direction of the tumor without invading the tumor mass until at least day 10 of injection. In addition, vascular branching resulted not only from sprouting as was seen in B16 without Matrigel but also from vascular splitting, either because of compression from outside the vessels or from septum formation by endothelial cells. This phenomenon was characteristic of B16 cells, but not of other tumor cells, including Lewis lung carcinoma and ASH-1 hybridoma cell lines, both of which were tested under the same conditions. The reduction in various angiogenic factors in Matrigel did not affect the angiogenic patterns and tumor growth. We hypothesize that tumor vessels may vigorously alter their angiogenic patterns in response to the local microenvironment.
DOI	10.1007/s00795-009-0481-8
PMID	20340003