Astellas Pharma Gmbh

Hitoshi Doihara

Hiroki Shirai

Kazunori Hirayama

Akifumi Morinaka

Naomi Hosogai

Ryuichi Takezawa

Jotaro Suzuki

Katsura Nozawa

Ryosuke Kojima

Hiroyuki Ito

Eri Shoda

The problem to be solved is to provide an anti-human MUC1 antibody Fab fragment that is expected to be useful in the diagnosis and/or treatment of a cancer, particularly, the diagnosis and/or treatment of breast cancer or bladder cancer, and a diagnosis approach and/or a treatment approach using a conjugate comprising the Fab fragment. The solution is an anti-human MUC1 antibody Fab fragment comprising a heavy chain fragment comprising a heavy chain variable region consisting of the amino acid sequence represented by SEQ ID NO: 8 or 10, and a light chain comprising a light chain variable region consisting of the amino acid sequence represented by SEQ ID NO: 12, and a conjugate comprising the Fab fragment.

Anti-human MUC1 antibody Fab fragment

Provided are an anti-human CEACAM5 antibody Fab fragment expected to be useful in the diagnosis of a cancer, particularly, the diagnosis of colorectal cancer, breast cancer, lung cancer, thyroid gland cancer or a cancer resulting from the metastasis thereof, and a diagnosis approach using a conjugate comprising the Fab fragment. The present invention provides an anti-human CEACAM5 antibody Fab fragment comprising a heavy chain fragment comprising a heavy chain variable region consisting of the amino acid sequence represented by amino acid positions 1 to 121 of SEQ ID NO: 2, and a light chain comprising a light chain variable region consisting of the amino acid sequence represented by amino acid positions 1 to 112 of SEQ ID NO: 4, and a conjugate comprising the Fab fragment.

Anti-human CEACAM5 antibody Fab fragment

Anti-human MUC1 antibody fab fragment

The present invention provides a screening tool and screening method for obtaining a substance useful as a prophylactic and/or therapeutic drug for diseases associated with 5-HT production/secretion abnormalities, including digestive organ diseases, and a prophylactic and/or therapeutic drug for diseases associated with 5-HT production/secretion abnormalities, including digestive organ diseases. Examples of digestive organ diseases in the present invention include constipation type irritable bowel syndrome, functional dyspepsia, constipation, diarrhea type irritable bowel syndrome, diarrhea and vomiting.

Screening method for prokinetic agent

N-(1H-tetrazol-5-yl)-1-phenoxy-4H-quinolizin-4-one-3-carboxamide is effective for treating IBS. In addition, IBS may be effectively treated with N-(1H-tetrazol-5-yl)-1-phenoxy-4H-quinolizin-4-one-3-carboxamide when used concomitantly with at least one of various serotonin 5-HT3 receptor antagonists.

Treatment for irritable bowel syndrome

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Tokyo, Japan

Hitoshi Doihara