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Updated: Jul 6, 2026

08:15
Gastrointestinal Motility Monitor (GIMM)
Published on: December 2, 2010
モチリンに対する受容体は,ヒトの胃腸系で特定されました
S D Feighner1, C P Tan, K K McKee
1Department of Metabolic Disorders, Department of Medicinal Chemistry, Merck Research Laboratories, Building RY-80Y-265, 126 East Lincoln Avenue, Rahway, NJ 07065, USA.
まとめ
ペプチドホルモンであるモチリンは,胃腸の収縮を刺激する. 研究者はその受容体を特定し,エリトロミシンが腸にどのように影響するか説明し,新しいGI運動障害の治療のための扉を開きました.
科学分野:
- 胃腸内科 胃腸内科
- エンドクリノロジー エンドクリノロジー
- 薬理学 薬理学とは
背景:
- モチリンは,胃腸に含まれるペプチドホルモンです.
- アントラムと十二指腸の収縮に影響を与え,胃の運動を調節する.
- モチリンの作用を媒介する特定の受容体は,以前は特定されていなかった.
研究 の 目的:
- 人間のモチリン受容体を分離し,特徴づけること.
- モチリン,その受容体,およびエリトロマイシンとの相互作用を調査する.
- 胃腸疾患におけるモチリン受容体を標的とした治療の可能性を調査する.
主な方法:
- ヒトの胃組織からゲトロトリメルグアナシン三リン酸 (Gタンパク質) 結合受容体の分離.
- アミノ酸の配列と,既知の受容体との比較.
- モチリンとエリトロミシンがクローンされた受容体との相互作用をテストする.
主要な成果:
- モチリンのための新しいGタンパク質結合受容体が,ヒトの胃からクローン化され,成功しました.
- モチリン受容体は,成長ホルモンの分泌剤受容体と52%のアミノ酸同一性を共有しています.
- エリトロマイシンは,クローンされたモチリン受容体との相互作用を示し,その胃腸作用の分子説明を提供しました.
- モチリン受容体は,ヒトの十二本腸と大腸の腸内ニューロンで発現する.
結論:
- モチリン受容体の識別は,モチリンが消化器官の運動性に及ぼす生理学的効果の分子基盤を提供します.
- この受容体とのエリトロマイシンの相互作用は,ヒトの消化管内の作用メカニズムを明らかにします.
- モチリン受容体をアゴニストまたはアンタゴニストで標的にすることは,様々な胃腸運動障害の治療に有望である.
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