Hairy/enhancer-of-split related with YRPW motif protein 1 promotes osteosarcoma metastasis via matrix metallopeptidase 9 expression

2015 Fiscal Year Final Research Report

• Project/Area Number: 25462341
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthopaedic surgery
• Research Institution: Kagoshima University
• Principal Investigator: Yamamoto Takuya 鹿児島大学, 医学部・歯学部附属病院, 講師 (40381157)
• Co-Investigator(Kenkyū-buntansha): SETOGUCHI Takao 鹿児島大学, 医歯学総合研究科, 特任准教授 (40423727) ; KOMIYA Setsuro 鹿児島大学, 医歯学域医学系, 教授 (30178371) ; NAGANO Satoshi 鹿児島大学, 医歯学域医学系, 准教授 (50373139)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 骨肉腫 / Notch / HEY1 / 転移

Outline of Final Research Achievements

Activation of the Notch pathway has been reported in various types of cancers. However, the role of the hairy/enhancer-of-split related with YRPW motif protein 1 (HEY1) in osteosarcoma is unknown. HEY1 was upregulated in human osteosarcoma. Knockdown of HEY1 inhibited the invasion of osteosarcoma cell lines. In contrast, the forced expression of HEY1 increased the invasion of mesenchymal stem cell. In addition, lung metastases were significantly inhibited by the knockdown of HEY1. We found that MMP9 was a downstream effector of HEY1 that promotes the invasion of osteosarcoma cells. Knockdown of HEY1 decreased the expression of MMP9. Addition of MMP9 rescued the invasion of osteosarcoma cells that had been rendered less invasive by knockdown of HEY1 expression. Our findings suggested that HEY1 augmented the metastasis of osteosarcoma via upregulation of MMP9 expression. Inhibition of HEY1 may be a novel therapeutic strategy for preventing osteosarcoma metastasis.

Free Research Field

骨軟部腫瘍