JP7141123B2 - 眼疾患の処置のためのアンチセンスオリゴヌクレオチド - Google Patents
眼疾患の処置のためのアンチセンスオリゴヌクレオチド Download PDFInfo
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Description
ヒトUSH2A pre-mRNAにおける有効なエクソン13のスキッピングのための代替的なアンチセンスオリゴヌクレオチド(AON)の提供および試験。
ヒトUSH2A遺伝子のエクソン13の配列を、エクソンスプライシングエンハンサーモチーフの存在についてさらに解析した。複数の部位を初めに決定し(図1を参照)、次に5つのRNA AON(Ex13-1からEx13-5)をIDTから購入し、58℃のTmを用いて設計した。初めに、すべてのAONを糖鎖において2’-O-メチル基で修飾し、すべてが完全なホスホロチオエート化骨格を有していた。AONをリン酸緩衝食塩水中に溶解させたままにした。
さまざまな化学修飾を有するAONを使用したWeri-Rb1細胞におけるエクソン13スキッピング。
培養条件、トランスフェクション、RT-PCRおよび分析プロトコルは、国際公開第2016/005514号パンフレットおよび上の実施例1に記載されているとおりとした。1.0×106のWeri-Rb1細胞を、インキュベーションに先立って6ウェルプレートの各ウェルに播いた。細胞を、Ex13-3配列(配列番号7)を有するが、5つの異なる種類の化学修飾パターンを保有する(LGD Biosearchから購入した)合成の単離オリゴヌクレオチドとともにジムノシスにより(gymnotically)(したがって、トランスフェクション試薬を用いず)インキュベートした。
5’-mA*mG*mC*mU*mU*mC*mG*mG*mA*mG*mA*mA*mA*mU*mU*mU*mA*mA*mA*mU*mC-3’
5’-MA*MG*MC*MU*MU*MC*MG*MG*MA*MG*MA*MA*MA*MU*MU*MU*MA*MA*MA*MU*MC-3’
5’-MA*MG*MC*MU*MU*mC*mG*mG*mA*mG*mA*mA*mA*mU*mU*mU*MA*MA*MA*MU*MC-3’
5’-mA*mG*mC*mU*mUmCmGmGmAmGmAmAmAmUmUmUmA*mA*mA*mU*mC-3’
5’-mA*mG*mC*mUmU*mCmG*mGmAmGmAmA*mAmU*mUmU*mAmA*mA*mU*mC-3’
AONはUSH2A患者の線維芽細胞から形成された眼杯においてエクソン13スキッピングを誘導する。
USH2A c.7595-2144A>G(p.Lys2532Thrfs*56)およびc.2299delG(p.Glu767Serfs)両突然変異を複合ヘテロ接合性で保有するUSH2患者由来の線維芽細胞および健康なドナー由来の線維芽細胞を眼杯形成のために使用した。これらの個体由来の線維芽細胞を、Oct3/4、SOX2、KLF4およびc-Mycを発現させる4つのレンチウイルスを使用してRadboud UMC Stem Cell Technology Centreによってリプログラミングした(Okita et al. 2011. A more efficient method to generate integration-free human iPS cells. Nat Methods 8:409-412)。簡単に述べると、人工多能性幹細胞(iPSC)株をフィーダー細胞(マウス胚線維芽細胞)上に形成し、次にEssential8培地(Life Technologies;カタログ#A1517001)中で維持した。3つのクローンを継代約6回で凍結保存し、免疫細胞化学によって多能性幹細胞マーカー:SSEA-4、NANOG、TRA1-81およびOct3/4の発現に関してさらに分析した。さらに、実施例1に記載されているとおりの全RNA単離後に、多能性マーカーLIN28、NANOG、Oct3/4およびSOX2に関してqPCR分析を行った。その後、iPSCコロニーを選択し、mTeSR1培地を用いて懸濁液中で培養して、凝集体形成を誘導した。凝集体を徐々に神経誘導培地に移行した。7日後に凝集体をマトリゲルコーティングしたシャーレに播き、培地を毎日変えた。分化の第4週目に、馬蹄形のNR領域を、先のとがったタングステン針により手作業で分離し、懸濁液中で2または3カ月培養し、ここで、それが、徐々に三次元の眼杯を形成した(詳細に関しては、Zhong et al. 2014. Generation of three-dimensional retinal tissue with functional photoreceptor from human iPSCs. Nat Comm 5:4047を参照)。
を使用しないエクソンスキッピング誘導AONによる処理がUSH2A患者材料のUSH
2A pre-mRNAにおいて著しいエクソン13のスキッピングをもたらすことを、
説得力をもって示している。
本発明の様々な実施形態を以下に示す。
1.ヒトUSH2A pre-mRNAにおいてエクソン13をスキップするためのアンチセンスオリゴヌクレオチド(AON)であって、生理的条件下において、配列番号12、13、もしくは14の配列、またはその一部と結合する、かつ/またはそれと相補的であるAON。
2.ヒトUSH2A pre-mRNAにおいてエクソン13をスキップするためのAONであって、配列番号5、6、または7の配列を含むか、またはそれからなるAON。
3.前記AONは、オリゴリボヌクレオチドである、上記1または2に記載のAON。
4.前記AONは、2’-O-メチル修飾糖などの2’-Oアルキル修飾を含む、上記1から3のいずれかに記載のAON。
5.前記AONのすべてのヌクレオチドは、2’-O-メチル修飾されている、上記4に記載のAON。
6.前記AONは、2’-O-メトキシエチル修飾を含む、上記1から3のいずれかに記載のAON。
7.前記AONのすべてのヌクレオチドは、2’-O-メトキシエチル修飾を保有する、上記6に記載のAON。
8.前記AONは、2’-O-メチルおよび2’-O-メトキシエチル修飾を含むオリゴリボヌクレオチドである、上記4または6に記載のAON。
9.前記AONは、少なくとも1つのホスホロチオエート結合を有する、上記1から8のいずれかに記載のAON。
10.すべての連続したヌクレオチドは、ホスホロチオエート結合によって互いに連結されている、上記9に記載のAON。
11.上記1から10のいずれかに記載のAON、および薬学的に許容される担体を含む医薬組成物。
12.前記医薬組成物は、硝子体内投与用であり、各眼当たり合計AONが0.05mgから5mgの範囲の量で投与される、上記11に記載の医薬組成物。
13.前記医薬組成物は、硝子体内投与用であり、各眼当たり合計AONが約0.1、0.2、0.3、0.4、0.5、0.6、0.7、0.8、0.9または1.0mgなど、各眼当たり合計AONが0.1から1mgの範囲の量で投与される、上記11または12に記載の医薬組成物。
14.上記1または2に記載のAONを発現させるウイルスベクター。
15.薬剤として使用するための、上記1から10のいずれかに記載のAON、上記11から13のいずれかに記載の医薬組成物、または上記14に記載のウイルスベクター。
16.アッシャー症候群II型などのUSH2A pre-mRNAのスプライシングを調節する必要があるUSH2A関連疾患または状態の処置、予防または遅延のための、上記1から10のいずれかに記載のAON、上記11から13のいずれかに記載の医薬組成物、または上記14に記載のウイルスベクター。
17.薬剤の調製のための、上記1から10のいずれかに記載のAON、上記11から13のいずれかに記載の医薬組成物、または上記14に記載のウイルスベクターの使用。
18.アッシャー症候群II型などのUSH2A pre-mRNAのスプライシングを調節する必要があるUSH2A関連疾患または状態の処置、予防または遅延のための、上記1から10のいずれかに記載のAON、上記11から13のいずれかに記載の医薬組成物、または上記14に記載のウイルスベクターの使用。
19.細胞におけるUSH2A pre-mRNAのスプライシングを調節するための方法であって、前記細胞を、上記1から10のいずれかに記載のAON、上記11から13のいずれかに記載の医薬組成物、または上記14に記載のウイルスベクターと接触させることを含む方法。
20.USH2A pre-mRNAのスプライシングの調節を必要とする個体の、それを必要とするUSH2A関連疾患または状態の処置のための方法であって、前記個体の細胞を、上記1から10のいずれかに記載のAON、上記11から13のいずれかに記載の医薬組成物、または上記14に記載のウイルスベクターと接触させることを含む方法。
Claims (19)
- ヒトUSH2A pre-mRNAにおいてエクソン13をスキップするためのアンチセンスオリゴヌクレオチド(AON)であって、配列番号5、6、または7の配列からなる、AON。
- 前記AONは、オリゴリボヌクレオチドである、請求項1に記載のAON。
- 前記AONは、2’-Oアルキル修飾を含む、請求項1または2に記載のAON。
- 前記AONは、2’-O-メチル修飾糖を含む、請求項3に記載のAON。
- 前記AONのすべてのヌクレオチドは、2’-O-メチル修飾されている、請求項4に記載のAON。
- 前記AONは、2’-O-メトキシエチル修飾を含む、請求項1または2に記載のAON。
- 前記AONのすべてのヌクレオチドは、2’-O-メトキシエチル修飾を保有する、請求項6に記載のAON。
- 前記AONは、2’-O-メチルおよび2’-O-メトキシエチル修飾を含むオリゴリボヌクレオチドである、請求項3、4または6に記載のAON。
- 前記AONは、少なくとも1つのホスホロチオエート結合を有する、請求項1から8のいずれか一項に記載のAON。
- すべての連続したヌクレオチドは、ホスホロチオエート結合によって互いに連結されている、請求項9に記載のAON。
- 請求項1から10のいずれか一項に記載のAON、および薬学的に許容される担体を含む医薬組成物。
- 前記医薬組成物は、硝子体内投与用であり、各眼当たり合計AONが0.05mgから5mgの範囲の量で投与される、請求項11に記載の医薬組成物。
- 前記医薬組成物は、硝子体内投与用であり、各眼当たり合計AONが0.1から1mgの範囲の量で投与される、請求項11または12に記載の医薬組成物。
- 前記医薬組成物は、各眼当たり合計AONが、約0.1、0.2、0.3、0.4、0 .5、0.6、0.7、0.8、0.9または1.0mgの量で投与される、請求項13 に記載の医薬組成物。
- 請求項1に記載のAONを発現させるウイルスベクター。
- 薬剤として使用するための、請求項1から10のいずれか一項に記載のAONまたは請求項15に記載のウイルスベクターを含む組成物、または請求項11~14のいずれか一項に記載の医薬組成物。
- USH2A pre-mRNAのスプライシングを調節する必要があるUSH2A関連疾患または状態の処置、予防または遅延のための、請求項1から10のいずれか一項に記載のAONまたは請求項15に記載のウイルスベクターを含む組成物、または請求項11~14のいずれか一項に記載の医薬組成物。
- USH2A pre-mRNAのスプライシングを調節する必要があるUSH2A関連 疾患または状態が、アッシャー症候群II型である、請求項17に記載の医薬組成物。
- 薬剤の調製のための、請求項1から10のいずれか一項に記載のAON、請求項11から14のいずれか一項に記載の医薬組成物、または請求項15に記載のウイルスベクターの使用。
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