JP2023056032A - ヒトAPOE4およびマウスTrem2 p.R47Hを発現する遺伝子改変されたマウス、ならびにその使用の方法 - Google Patents
ヒトAPOE4およびマウスTrem2 p.R47Hを発現する遺伝子改変されたマウス、ならびにその使用の方法 Download PDFInfo
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Abstract
Description
本出願は、2017年3月21日に出願された米国仮特許出願番号第62/474,358号からの優先権を主張しており、その全体の内容は、参考として本明細書中に援用される。
本発明は、国立衛生研究所によって授与されたAG054345の下、政府支援でなされた。政府は本発明において特定の権利を有する。
本発明は、概して、ヒトアルツハイマー病のモデルとして有用な遺伝子改変マウスに関する。特定の態様では、本発明は、ヒトAPOE4およびマウスTrem2 p.R47Hを発現する遺伝子改変マウスならびにその使用方法に関する。
アルツハイマー病(AD)のための療法の開発に対する主要な障害のうちの1つは、前臨床試験において使用する動物モデルが存在しないことである。この1つの理由は、既存のモデルが、家族性の変異に基づいているが、臨床集団の大半が、非家族性遅発型ADを有するためであり得る。
ヒトAPOE4pおよびマウスTrem2pの発現を伴う、非家族性遅発型アルツハイマー病に関係する1つまたは複数の症状または徴候を特徴とする遺伝子改変マウスであって、マウスのゲノムが、1)プロモーターに動作可能に連結されたヒトAPOE4タンパク質(APOE4p)をコードするDNA配列、および2)プロモーターに動作可能に連結された、p.R47H変異を有するマウスTrem2タンパク質(Trem2p)をコードするDNA配列を含み、マウスが、ヒトAPOE4pおよびマウスTrem2pを発現する、遺伝子改変マウスが本発明の態様に従って提供される。本発明の態様によれば、マウスは、APOE4pをコードするDNA配列について、およびTrem2pをコードするDNA配列についてホモ接合性である。
本発明は、概して、非家族性遅発型アルツハイマー病のモデルであり、そのゲノムに外因的に導入した非家族性遅発型ADの2つのリスク因子をコードし、これによりマウスが、ヒトアポリポタンパク質E4(APOE4)およびマウスTrem2 p.R47Hタンパク質を産生する遺伝子改変マウスに関する。
APOE4pのアミノ酸配列を、APOE4pをコードする例示的核酸配列とともに示す。
GAAGCACTGGGGGAGACGCA
特定の実施形態では、例えば以下の項目が提供される。
(項目1)
ヒトAPOE4pおよびマウスTrem2pの発現を伴う、非家族性遅発型アルツハイマー病に関係する1つまたは複数の症状または徴候を特徴とする遺伝子改変マウスであって、前記マウスのゲノムが、1)プロモーターに動作可能に連結されたヒトAPOE4タンパク質(APOE4p)をコードするDNA配列、および2)プロモーターに動作可能に連結された、p.R47H変異を有するマウスTrem2タンパク質(Trem2p)をコードするDNA配列を含み、前記マウスが、ヒトAPOE4pおよびマウスTrem2pを発現する、遺伝子改変マウス。
(項目2)
前記APOE4pが、配列番号1のアミノ酸配列を含むか、または前記APOE4pが、高度にストリンジェントなハイブリダイゼーション条件下で配列番号2とハイブリダイズする核酸の相補体によりコードされる、項目1に記載の遺伝子改変マウス。
(項目3)
前記マウスTrem2pが、配列番号3のアミノ酸配列を含むか、または前記マウスTrem2pが、高度にストリンジェントなハイブリダイゼーション条件下で配列番号4とハイブリダイズする核酸の相補体によりコードされる、項目1に記載の遺伝子改変マウス。
(項目4)
前記マウスのゲノムが、1)プロモーターに動作可能に連結されたヒトAPOE4タンパク質(APOE4p)をコードするDNA配列、および2)プロモーターに動作可能に連結された、p.R47H変異を有するマウスTrem2タンパク質(Trem2p)をコードするDNA配列を含む、B6(SJL)-Apoetm1.1(APOE*4)AdiujTrem2em1Adiuj/Jマウスであり、前記マウスが、APOE4pをコードするDNA配列について、およびTrem2pをコードするDNA配列についてホモ接合性であり、ヒトAPOE4pおよびマウスTrem2pを発現する、項目1に記載の遺伝子改変マウス。
(項目5)
アルツハイマー病の処置における使用のための化合物についてスクリーニングするための方法であって、
項目1~4のいずれか一項に記載の遺伝子改変マウスに化合物を投与するステップと、
非家族性遅発型アルツハイマー病に関係する、ヒトAPOE4pおよびマウスTrem2pの発現を伴う1つまたは複数の症状または徴候の処置に対する前記化合物の作用をマウスにおいて評価するステップと
を含む、方法。
(項目6)
前記化合物の作用を評価するステップが、項目1~4のいずれか一項に記載の遺伝子改変マウスに対する前記化合物の作用を、対照と比較することを含む、項目5に記載のアルツハイマー病の処置における使用のための化合物についてスクリーニングするための方法。
(項目7)
前記対照が、
ヒトAPOE4pおよびマウスTrem2pを発現しないマウスに前記化合物を投与するステップと、
前記化合物の作用を前記マウスにおいて評価するステップと
を含む、項目6に記載のアルツハイマー病の処置における使用のための化合物についてスクリーニングするための方法。
(項目8)
前記対照が、
野生型C57BL/6Jマウスに前記化合物を投与するステップと、
前記化合物の作用を前記野生型C57BL/6Jマウスにおいて評価するステップと
を含む、項目6または7に記載のアルツハイマー病の処置における使用のための化合物についてスクリーニングするための方法。
(項目9)
前記対照が、
APOE3発現マウスに前記化合物を投与するステップと、
前記化合物の作用を前記APOE3発現マウスにおいて評価するステップと
を含む、項目6または7に記載のアルツハイマー病の処置における使用のための化合物についてスクリーニングするための方法。
(項目10)
ヒトAPOE4pおよびマウスTrem2pの発現を伴う、実質的に本明細書で記載される非家族性遅発型アルツハイマー病に関係する1つまたは複数の症状または徴候を特徴とする遺伝子改変マウス。
(項目11)
実質的に本明細書で記載されるアルツハイマー病の処置における使用のための化合物についてスクリーニングするための方法。
Claims (1)
- 明細書に記載の発明。
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