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高次脳機能の理解に向けて,動物個体レベルで特定の神経細胞の活動を制御可能なケモジェネティクスなどの細胞操作技術が注目されている。しかし,既存法では神経細胞に存在しない人工受容体を用いるため,神経細胞が有する本来の機能を観察できていない可能性がある。本論では,筆者らの研究を中心に,特定の神経細胞に内在する標的受容体の制御を可能とする「分子標的ケモジェネティクス」に向けた最新の細胞操作技術を述べる。
Abstract
To understand higher brain function, we need to understand the cellular function in a cell-type-specific manner. In recent decades, cell manipulation techniques termed chemogenetics (e.g., DREADD) have enabled cell-type-specific control of nerve activity in vivo. These are powerful for elucidating brain function in live animals. However, artificially-designed receptors evoke unnatural cellular signals in these methods; thus, they may not reflect physiological responses. We have recently focused on “molecular-targeted chemogenetics,” which allows the cell-type specific regulation of target endogenous receptors. This review describes our current results toward “molecular-targeted chemogenetics” along with the recent progress in cell manipulation techniques.
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