ヤマムラ　マサヒロ   Masahiro Yamamura   山村　真弘    所属   川崎医科大学  医学部    職種   学長付講師
言語種別	英語
発表タイトル	NOX4 on lymphatic endothelial cells (LEC) plays an important role on the migration of pancreatic cancer cells towards lymphatics.
会議名	The 79th Annual Meeting of the Japanese Cancer Association
主催者	The Japanese Cancer Association
学会区分	全国規模の学会
発表形式	口頭
講演区分	一般
発表者・共同発表者	Yamauchi A, Yamamura M, Katase N, Tomonobu N, Kinoshita R, Sakaguchi M, Okamoto S
発表年月日	2020/10/01
開催地 （都市, 国名）	Hiroshima, Japan
概要	The metastasis via lymphatic system is known to be the first step to distant metastasis, however, little is known about the molecular mechanisms of cancer cell interaction to the lymphatics. Previously we reported that the migration of pancreatic cancer cell BxPC-3 was suppressed by reactive oxygen species (ROS), at the 77th Annual Meeting. Here, we analyzed the role of ROS generating enzyme NOX4 on human dermal lymphatic endothelial cells (HDLEC) in BxPC-3 migration. Firstly, we evaluated the migration of BxPC-3 cells with or without HDLEC and found that BxPC-3 cells migrated naturally towards HDLEC without any stimulation. Next, we knocked-down NOX4 protein expression on HDLEC by siRNA and evaluated the migration of BxPC-3 cell towards HDLEC. We found that the migration of BxPC-3 cells towards NOX4-knocked-down HDLEC was enhanced, particularly in the velocity. These data suggest that NOX4 on LEC plays an important role on the cancer cell migration towards lymphatics. ROS in cancer micro-environment may have a negative effect on cancer cell migration. (Non-member contributors: Kei Miyano and Futoshi Kuribayashi)