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2018 Fiscal Year Final Research Report

Development of an Easily Modifiable Compound Library with More Complex Three-Dimensional Structures

Research Project

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Project/Area Number 16K18912
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Drug development chemistry
Research InstitutionKitasato University

Principal Investigator

Karaki Fumika  北里大学, 薬学部, 助教 (80756057)

Project Period (FY) 2016-04-01 – 2019-03-31
Keywords創薬化学 / ライブラリー構築 / click反応 / 医薬分子設計 / 立体的ファーマコフォア
Outline of Final Research Achievements

Ligands, small molecules that bind to the target proteins, are indispensable in drug development. Despite this, it is difficult to find out a ligand for proteins whose ligands have not ever been discovered. To address this issue, we set out to construct a compound library with high expectancy of discovering novel ligands.
It is currently said that sterically more complex molecules are more advantageous in developing drugs. Hence, we constructed a compound library by modifying a three-dimensional 7-azanorbornane scaffold. By screening through the library constructed in this way, we successfully identified novel ligands for growth hormone secretagogue receptor and opioid receptors.

Free Research Field

創薬化学, ケミカルバイオロジー

Academic Significance and Societal Importance of the Research Achievements

既知のリガンドが存在しないタンパク質を創薬の標的とする場合, 膨大な数 (数十万程度)の化合物の中からリガンドを探し出すハイスループットスクリーニングと呼ばれる方法を取ることが多い. しかし, ハイスループットスクリーニングでリガンドを見つけられる確率は一般的に非常に低く, このことが医薬開発の遅れを招いている可能性がある. これに対して, 本研究でとった手法では, 23% (22化合物中5化合物)という非常に高い確率で, リガンドとなる化合物を見つけることができた. この手法により, 将来的には, 新たに発見されたタンパク質を標的とした創薬が容易になることが期待される.

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Published: 2020-03-30  

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