Takeda Pharmaceutical Company Limited

Hideki Matsui

Chieko Kitada

Tetsuya Ohtaki

Kazuhiro Ogi

Yoshihiro Ishibashi

Shuji Hinuma

Ryo Fujii

Masaki Hosoya

Yasushi Shintani

Shoichi Okubo

Takeo Moriya

The present invention relates to a peptide comprising an amino acid sequence identical to or substantially identical to an amino acid sequence represented by SEQ ID NO: 35 and having an ability of binding to a receptor protein comprising an amino acid sequence identical to or substantially identical to an amino acid sequence represented by SEQ ID NO: 1, SEQ ID NO: 2 or SEQ ID NO: 3, or a precursor thereof, its amide or ester, or a salt thereof. An inventive peptide-encoding DNA or equivalent can be employed in (1) a development of a receptor binding assay system using an expression system of a recombinant receptor protein and a screening for a pharmaceutical candidate compound, and (2) a development of a pharmaceutical having a reduced side effect such as a memory function improving agent, an appetite improving agent, an uterine, renal, prostatic, testicular or skeletal muscle function regulating agent.

DNA encoding galanin receptor activating peptide

The screening method for a compound or a salt thereof that alters the binding property between Neuromedin U or a salt thereof and TGR-1 or a salt thereof, characterized by using Neuromedin U, a derivative thereof or a salt thereof and TGR-1 or a salt thereof, can be useful for screening a therapeutic and/or prophylactic agent for hypertension and stress-related diseases, etc. A TGR-1 antagonist can be useful as a therapeutic and/or prophylactic agent for hypertension and stress-related diseases, etc.

Screening method

The present invention relates to a peptide comprising an amino acid sequence identical to or substantially identical to an amino acid sequence represented by SEQ ID NO: 35 and having an ability of binding to a receptor protein comprising an amino acid sequence identical to or substantially identical to an amino acid sequence represented by SEQ ID NO: 1, SEQ ID NO: 2 or SEQ ID NO: 3, or a precursor thereof, its amide or ester, or a salt thereof. An inventive peptide-encoding DNA or equivalent can be employed in (1) a development of a receptor binding assay system using an expression system of a recombinant receptor protein and a screening for a pharmaceutical candidate compound, and (2) a development of a pharmaceutical having a reduced side effect such as a memory function improving agent, a appetite improving agent, an uterine, renal, prostatic, testicular or skeletal muscle function regulating agent.

Physiologically active peptide and its use

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Tsukuba, Japan

Hideki Matsui