A novel truncated glucagon-like peptide 2 (GLP-2) as a tool for analyzing GLP-2 receptor agonists

  • YAMAZAKI Kazuto
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • KAGAYA Takaki
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • WATANABE Misako
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • TERAUCHI Hiroki
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • IIDA Daisuke
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • FUKUMOTO Hironori
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • SUZUKI Shuichi
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • ARAI Tohru
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • AOKI Mika
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • TAKASE Kazuma
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • SEIKI Takashi
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • TSUKAHARA Kappei
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan
  • NAGAKAWA Junichi
    Eisai Product Creation Systems, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki 300-2635, Japan

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抄録

Glucagon-like peptide 2 (GLP-2) is an intestinotropic peptide that binds to GLP-2 receptor (GLP-2R), a class-B G protein-coupled receptor. The GLP-2R antagonist GLP-2(3-33) has relatively high partial agonistic activity, and there are as yet no ideal known potent GLP-2R antagonists. We therefore prepared several truncated forms of human GLP-2 and characterized them by binding and reporter assays to find antagonists more potent than GLP-2(3-33). We found that GLP-2(11-33) was the most potent orthosteric GLP-2R antagonist, with binding activity almost equal to those of GLP-2 and GLP-2(3-33) and weaker intrinsic agonistic activity than GLP-2(3-33). GLP-2(11-33) retained weak agonistic activity toward human, cynomolgus monkey, dog, and Syrian hamster GLP-2Rs. However, it had no agonistic activity toward rat GLP-2R. GLP-2(11-33) potentiated the agonistic activity of an ago-allosteric modulator of GLP-2R, compound 1 (N-[1-(2,5-dichlorothiophen-3-yl)-2-(phenylsulfanyl)ethylidene]hydroxylamine), synergistically toward human GLP-2R. In the case of rat GLP-2R, GLP-2(11-33) decreased the agonistic activity of compound 1, although GLP-2 and GLP-2(3-33) increased this activity additively. These findings suggest that the binding sites of the ago-allosteric modulator and GLP-2 overlap, at least in rat GLP-2R. GLP-2(11-33) is a novel, useful tool for analyzing the mode of action of agonists and ago-allosteric modulators of GLP-2R.

収録刊行物

  • Biomedical Research

    Biomedical Research 34 (3), 129-136, 2013

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