Astellas Pharma Gmbh

Hideki Endoh

Yoshitaka Ueda

Kazunori Inabe

Masahiko Hayakawa

Hiroyuki Yokota

Shinji Soga

Yuki Endo

Tamaki Oda

Miyuki Kato

A method for identifying a target protein of a compound having a pharmacological action by detecting a tertiary structural change of a target protein by binding a compound having a pharmacological action to a target protein with the use of a molecular chaperone protein having a characteristic of binding to a protein by recognizing a tertiary structural change of the protein is disclosed. Further, a method for screening a therapeutic agent for diabetes using a target protein of biguanide which is a therapeutic agent for diabetes and was found by the identification method, a screening tool which can be used in the screening method and a pharmaceutical composition for treating diabetes containing a substance obtained by the screening method are disclosed.

Method for identifying target protein of drug and method for screening therapeutic agent for diabetes using the target protein

A novel polypeptide, a polynucleotide, an expression vector, a cell transfected with the expression vector, a method for screening an insulin resistance improving agent and a carbohydrate metabolism improving agent, and a method for producing a pharmaceutical composition are provided. The polypeptide is useful in screening an insulin resistance improving agent and a carbohydrate metabolism improving agent. When the polypeptide is overexpressed in a fat cell, the activity of Akt2 is reduced. Fat cells express the polypeptide. The polynucleotide encodes the polypeptide. The expression vector includes the polynucleotide. The screening method uses the polypeptide to screen for an insulin resistance improving agent and a carbohydrate metabolism improving agent. The production method uses the substance obtained by the screening method as the active ingredient of the pharmaceutical composition. The pharmaceutical composition is useful for insulin resistance improvement and carbohydrate metabolism improvement.

Protein which binds to Akt2

A novel polypeptide which is useful in screening of an agent for improving insulin resistance and an agent for improving glucose metabolism, a polynucleotide encoding the polypeptide, an expression vector comprising the polynucleotide, and a cell transformed with the expression vector are disclosed. The polypeptide is a protein expressed in skeletal muscle. When the protein is overexpressed, incorporation of sugar into a cell is inhibited. A method for screening of an agent for improving insulin resistance and/or an agent for improving glucose metabolism in which the polypeptide is used, and a method for producing a pharmaceutical composition for insulin resistance and/or glucose metabolism improvement comprising a substance obtained according to the method for screening as an active ingredient are also disclosed.

Cap-binding protein

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Tsukuba, Japan

Hideki Endoh