2022 Fiscal Year Final Research Report
Role of angiotensin-converting enzyme 2 in neuropathic pain and development of novel therapeutic agents
Project/Area Number |
19K16376
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 47040:Pharmacology-related
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Research Institution | Tohoku Medical and Pharmaceutical University |
Principal Investigator |
Nemoto Wataru 東北医科薬科大学, 薬学部, 講師 (80635136)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Keywords | アンジオテンシン / アンジオテンシン変換酵素2 / 脊髄 / 疼痛 |
Outline of Final Research Achievements |
Angiotensin (Ang)-generating system is localized in the spinal cord and has been suggested to contribute to pain transmission. In this study, we investigated the role of Ang-converting enzyme 2 (ACE2), a metabolic enzyme of Ang II, in spinal pain transmission. We found that diminazene aceturate (DIZE), an ACE2 activator, suppressed hyperalgesia observed in chronic constriction injury (CCI) mice, a model of neuropathic pain, and nociceptive behavior induced by intraplantar formalin injection. In addition, these analgesic effects of DIZE were abolished by the MAS1 receptor antagonist A779. These results suggest that enhancement of the ACE2/Ang (1-7)/MAS1 receptor system in the spinal cord may be a novel therapeutic target for pain.
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Free Research Field |
薬理学
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Academic Significance and Societal Importance of the Research Achievements |
アンジオテンシン (Ang) 系は生体内の血圧維持に関わる重要なシステムであり高血圧症治療における重要なターゲットとなっている.2000年代に入り、Ang (1-7) 受容体であるMAS1受容体や産生酵素であるACE2が発見されて以降,ACE2/Ang (1-7)/Mas受容体系に着目した研究が幅広く行われている.一方,この系の脊髄疼痛伝達機構における役割に関しては全く研究が行われていなかった.このような背景の基,ACE2が脊髄疼痛伝達機構に寄与することを見出した本研究は,Ang (1-7) 産生系が神経障害性疼痛をはじめとする難治性疼痛に対する新規治療標的となり得ることを示したものである.
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