Daiichi Pharmaceutical Co., Ltd.

Tetsu Akiyama

Yoshihiro Kawasaki

Takefumi Ishidao

Tomoiki Aiba

Rina Esashi

Tumor formation and reduced transcription of both sFRP1 gene and sFRP2 gene were found in Dlg gene knock-out mice, and thereby the following has been provided: an agent for enhancing the expression and/or function of sFRP, containing a compound having an effect of enhancing the expression and/or function of Dlg; an agent for inhibiting tumor formation or an agent for preventing and/or treating a tumor disease, containing the agent for enhancing the expression and/or function of sFRP; a method of enhancing the expression and/or function of sFRP, comprising enhancing the expression and/or function of Dlg; a method of inhibiting tumor formation or a method of preventing and/or treating a tumor disease, comprising using the aforementioned enhancing agent or the aforementioned enhancing method; a non-human mammal that is deficient in one or both of Dlg alleles; a cell originating in the mammal; a method of identifying a compound, comprising using the mammal or the cell; and a method of examining a tumor tissue or a tumor cell, comprising measuring the expression and/or function of Dlg.

sFRP expression enhancing agent

The present invention provides an agent for inhibiting metastasis of colorectal cancer and a method for inhibiting metastasis of colorectal cancer, which inhibit the function of Asef (i.e., binding activity to the APC gene product or guanine nucleotide exchange factor activity) that binds to the gene product of the tumor suppressor gene APC that plays an important role in tumorigenesis and in developmental processes, and/or inhibit the expression of the Asef gene.

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Tama, Japan

Tetsu Akiyama