JP2018118995A - 筋萎縮性側索硬化症および他の脊髄障害のための遺伝子治療 - Google Patents
筋萎縮性側索硬化症および他の脊髄障害のための遺伝子治療 Download PDFInfo
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
【解決手段】IGF−1導入遺伝子を含む組換え神経栄養ウイルス性ベクターの脳室内投与によって、対象の脊髄及び/又は脳幹領域に導入遺伝子を送達するための方法及び組成物を提供する。ウイルス性ベクターは、ウイルスによる感染に影響されやすく、かつコードされている組換えウイルス性遺伝子産物を発現する脳の領域に導入遺伝子を送達する。また、導入遺伝子を含む組換え神経栄養ウイルス性ベクターを投与することによって導入遺伝子産物を対象の脊髄に送達するための組成物も提供される。
【選択図】なし
Description
ゲノムコピー数(ゲノム粒子/ml)に従って、AAVベクターの力価を測定する。ゲノム粒子濃度は、以前報告されたベクターDNAのTaqman(登録商標)PCRに基づく(Clark et al. (1999) Hum. Gene Ther., 10:1031 1039; Veldwijk et al. (2002) Mol. Ther., 6:272 278)。
筋萎縮性側索硬化症(ALS)は、皮質、脳幹および脊髄における運動ニューロンの選択的な減少によって特徴付けられる致死的な神経変性疾患である。疾患の進行は、四肢、軸および呼吸筋の萎縮症をもたらす。運動ニューロンの細胞死は、反応性神経膠症、神経フィラメント異常、ならびに皮質脊髄路および前根における大きな有髄化線維の有意な減少をともなう1−6。ALSの原因はあまり解っていないが、蓄積する証拠は、孤発性(SALS)および家族性(FALS)ALSは多くの類似する病理学的特徴を共有しており;従って、いづれかの形態の研究が共通の処置を導くかもしれない見込みを提供する7。FALSは診断ケースの約10%を占め、その20%はCu/Znスーパーオキシドジスムターゼ(SOD1)における優性遺伝性変異に関連している8。変異ヒトSOD1タンパク質を発現するトランスジェニックマウス(例えば、SOD1G93Aマウス)は、ALSの多くの病理学的特徴を繰り返しており、ALSを研究するために利用可能な動物モデルである9。SALSについて、グルタミン酸誘導性興奮毒性、毒物曝露、プロテアソーム機能障害、ミトコンドリア損傷、神経フィラメント組織崩壊および神経栄養支持の減少を含む、無数の病理学的機構が根本原因に関係あると見なされている。
発明者らは実験を実施して、AAV4−IGF−1の側脳室内送達が、(1)寿命の有意な延長;(2)ロータロッドおよび握力課題の成果改善;ならびに(3)脳幹および脊髄における神経病理の減少(すなわち、神経膠症における寛解および運動ニューロン生存率の改善)をもたらすかどうか決定した。
症候性のSOD1マウス(すなわち、88〜90日齢)を、側脳室および第四脳室両方へのベクターの側脳室内注入を介して、AAV4−IGF−1またはAAV4−GFPベクターのいずれかで処理した。マウスは、2e10gc/脳室の用量を受けた。緑色蛍光タンパク質をコントロールタンパク質として用いて、AAVベクターの注入によって媒介される発現の可視化を可能にした。
症候性のSOD1マウス(すなわち、88〜90日齢)を、側脳室および第四脳室両方へのベクターの側脳室内注入を介して、AAV4−VEGF−165またはAAV4−GFPベクターのいずれかで処理した。マウスは、2e10gc/脳室の用量を受けた。緑色蛍光タンパク質をコントロールタンパク質として利用し、AAVベクターの注入によって媒介される発現の可視化を可能にした。
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Claims (30)
- 以下の工程を包含する、対象において導入遺伝子産物を脊髄に送達する方法:
導入遺伝子を含む組換え神経栄養ウイルス性ベクターを少なくとも1つの脳室に投与する工程であって、それによって導入遺伝子が発現され、発現したタンパク質産物が脊髄に送達される、工程。 - ウイルス性ベクターがAAVベクターである、請求項1に記載の方法。
- ウイルス性ベクターがAAV4である、請求項1に記載の方法。
- 導入遺伝子がIGF−1である、請求項1に記載の方法。
- ウイルス性ベクターが脳室内への直接注入によって投与される、請求項1に記載の方法。
- ウイルス性ベクターが側脳室内への直接注入によって投与される、請求項1に記載の方法。
- ウイルス性ベクターが第四脳室内への直接注入によって投与される、請求項1に記載の方法。
- 対象が筋萎縮性側索硬化症を有する、請求項1に記載の方法。
- 以下の工程を包含する、筋萎縮性側索硬化症を有する対象においてIGF−1を脊髄に送達する方法:
IGF−1をコードする導入遺伝子を含む組換えAAV4ウイルス性ベクターを、側脳室および第四脳室からなる群より選択される少なくとも1つの脳室に投与する工程であって、それによって導入遺伝子が発現され、IGF−1が脊髄に送達される、工程。 - 以下の工程を包含する、対象において運動ニューロン障害を処置する方法:
治療用導入遺伝子を含む組換え神経栄養ウイルス性ベクターを少なくとも1つの脳室に投与する工程であって、それによって導入遺伝子が治療有効量で発現される、工程。 - ウイルス性ベクターがAAVベクターである、請求項10に記載の方法。
- ウイルス性ベクターがAAV4である、請求項10に記載の方法。
- 導入遺伝子がIGF−1である、請求項10に記載の方法。
- ウイルス性ベクターが脳室内への直接注入によって投与される、請求項10に記載の方法。
- ウイルス性ベクターが側脳室への直接注入によって投与される、請求項10に記載の方法。
- ウイルス性ベクターが第四脳室への直接注入によって投与される、請求項10に記載の方法。
- 対象が筋萎縮性側索硬化症を有する、請求項10に記載の方法。
- 以下の工程を包含する、対象において筋萎縮性側索硬化症を処置する方法:
IGF−1導入遺伝子を含む組換えAAV4ウイルス性ベクターを、側脳室および第四脳室からなる群より選択される少なくとも1つの脳室に投与する工程であって、それによって導入遺伝子が治療有効量で発現される、工程。 - 導入遺伝子が、インスリン増殖因子−1(IGF−1)、カルビンジン D28、パルブアルブミン、HIF1−アルファ、SIRT−2、VEGF、SMN−1、SMN−2CNTF(毛様体神経栄養因子)、ソニックヘッジホッグ(shh)、エリスロポイエチン(EPO)、リジルオキシダーゼ(LOX)、プログラニュリン(progranulin)、プロラクチン、グレリン、ニューロセルピン、アンジオゲニンおよびプラセンタラクトゲンからなる群より選択される、請求項1または10に記載の方法。
- 対象が、筋萎縮性側索硬化症(ALS)、球脊髄性筋萎縮症、脊髄性小脳運動失調、脊髄性筋萎縮症および外傷性脊髄損傷からなる群より選択される状態を有する、請求項1または10に記載の方法。
- 対象が哺乳動物である、請求項1または10に記載の方法。
- 哺乳動物が、齧歯動物、マウス、サルおよびヒトからなる群より選択される、請求項21記載の方法。
- 対象がヒト患者である、請求項1または10に記載の方法。
- ヒト患者が、インスリン増殖因子−1(IGF−1)、カルビンジン D28、パルブアルブミン、HIF1−アルファ、ソニックヘッジホッグ(shh)、エリスロポイエチン(EPO)、SIRT−2、VEGF、SMN−1、SMN−2およびCNTF(毛様体神経栄養因子)からなる群より選択されるタンパク質の有効量を低発現する、請求項23に記載の方法。
- 導入遺伝子が、インスリン増殖因子−1(IGF−1)、カルビンジン D28、パルブアルブミン、HIF1−アルファ、SIRT−2、VEGF、SMN−1、SMN−2CNTF(毛様体神経栄養因子)、ソニックヘッジホッグ(shh)、エリスロポイエチン(EPO)、リジルオキシダーゼ(LOX)、プログラニュリン(progranulin)、プロラクチン、グレリン、ニューロセルピン、アンジオゲニンおよびプラセンタラクトゲンからなる群より選択されるタンパク質の治療量を発現する、請求項1または10に記載の方法。
- 以下の工程を包含する、対象においてCNS機能の減少を検出するためのアッセイ:
マーカーをコードする導入遺伝子を含む神経栄養ウイルス性ベクターの診断有効量を対象の脳室に投与する工程;および
対象のCNSにおけるマーカーの存在をスクリーニングする工程。 - マーカー導入遺伝子が緑色蛍光タンパク質である、請求項25記載のアッセイ。
- 導入遺伝子のタンパク質産物がTAT修飾されている、請求項1、9、10または18に記載の方法。
- 導入遺伝子のタンパク質産物がHIV TATタンパク質のタンパク質形質導入ドメイン由来の11アミノ酸モチーフを含む、請求項27に記載の方法。
- 導入遺伝子が、インスリン増殖因子−1(IGF−1)、カルビンジン D28、パルブアルブミン、HIF1−アルファ、SIRT−2、VEGF、SMN−1、SMN−2CNTF(毛様体神経栄養因子)、ソニックヘッジホッグ(shh)、エリスロポイエチン(EPO)、リジルオキシダーゼ(LOX)、プログラニュリン(progranulin)、プロラクチン、グレリン、ニューロセルピン、アンジオゲニンおよびプラセンタラクトゲンからなる群より選択される少なくとも2つのタンパク質の治療量を発現する、請求項1または10に記載の方法。
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