Research Project
Grant-in-Aid for Scientific Research (C)
The aim of the present study was to reveal the roles of TREK1 on cancer pain and to develop TREK1 agonists as novel analgesics for cancer patients. We first constructed cells stably expressing opioid receptors (ORs), which were reported to activate TREK1. We next established cells expressing TREK1 and cells simultaneously expressing TREK1 and μOR. We then investigated effects of opioid analgesics on TREK1 activation and performed screenings of novel TREK1 using these cells.In the mean time, we established a novel chemotherapy-induced neuropathic pain (CINP) mouse model using carboplatin, which showed enhanced TRPA1 activation via cAMP-PKA-AKAP pathway and induced mechanical and cold allodynia. Using this CINP model, investigation of involvement of TREK1 activities on neuropathic pain are ongoing.
TREK1活性化剤は、TREK1を介した細胞内外のイオンバランス調整により疼痛および鎮痛の両面での神経活性を制御し、結果として鎮痛作用を発揮させるため、既存の鎮痛薬に比較し有効かつ副作用や耐性の生じにくい鎮痛薬となり得る。本研究は、難治性疼痛の克服によりがん患者のがん治療の継続を可能にすることで治療の完遂を促し、患者のQOL向上に寄与するだけでなく患者の生命予後の延長にも貢献すると考える。
All 2020 2019 2018 2017 2016 Other
All Journal Article (6 results) (of which Peer Reviewed: 6 results, Open Access: 5 results) Presentation (40 results) (of which Int'l Joint Research: 3 results, Invited: 3 results) Book (1 results) Remarks (3 results)
International Journal of Molecular Sciences
Volume: 20 Issue: 13 Pages: 3271-3271
10.3390/ijms20133271
Journal of Pharmacological Sciences
Volume: 140 Issue: 2 Pages: 171-177
10.1016/j.jphs.2019.06.005
J Pharmacol Sci
Volume: 137 Issue: 1 Pages: 67-75
10.1016/j.jphs.2018.04.002
Biological and Pharmaceutical Bulletin
Volume: 41 Issue: 4 Pages: 649-651
10.1248/bpb.b17-00691
130006602527
Molecular Pain
Volume: 13 Pages: 1-9
10.1177/1744806917740030
Scientific Reports
Volume: 6 Issue: 1 Pages: 31748-31748
10.1038/srep31748
120007129422
https://www.ncc.go.jp/jp/ri/division/cancer_pathophysiology/index.html
https://www.ncc.go.jp/jp/ri/division/cancer_pathophysiology/paper/index.html
http://www.nccri.ncc.go.jp/s014/