JP5985487B2 - 改変ヒトU1snRNA分子、改変ヒトU1snRNA分子をコードしている遺伝子、遺伝子を含む発現ベクターおよび遺伝子治療におけるその使用 - Google Patents
改変ヒトU1snRNA分子、改変ヒトU1snRNA分子をコードしている遺伝子、遺伝子を含む発現ベクターおよび遺伝子治療におけるその使用 Download PDFInfo
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Description
taaggaccagcttctttgggagagaacagacgcaggggcgggagggaaaaagggagaggcagacgtcacttccccttggcggctctggcagcagattggtcggttgagtggcagaaaggcagacggggactgggcaaggcactgtcggtgacatcacggacagggcgacttctatgtagatgaggcagcgcagaggctgacgtcttcgccacttgctgcttcaccacgaaggagttcccgtgccctgggagcgggttcaggaccgctgatcggaagtgagaatcccagctgtgtgtcagggctggaaagggctcgggagtgcgcggggcaagtgaccgtgtgtgtaaagagtgaggcgtatgaggctgtgtcggggcagaggcccaagatctgATACTTACCTGGCAGGGGAGATACCATGATCACGAAGGTGGTTTTCCCAGGGCGAGGCTTATCCATTGCACTCCGGATGTGCTGACCCCTGCGATTTCCCCAAATGTGGGAAACTCGACTGCATAATTTGTGGTAGTGGGGGACTGCGTTCGCGCTTTCCCCTGactttctggagtttcaaaagtagactgtacgctaa-3'(配列番号:12)
言うまでもなく、上記の遺伝子配列は単なる一例として提供されている。別法として、本発明の改変U1snRNAをコードしている遺伝子を構築するために、配列番号12と相同ないずれかの遺伝子配列、すなわちスプライシングドナー部位の認識を有効に仲介できるU1snRNAをコードすることができるものを使用することができる。
改変U1snRNAは以下の手順によって作製された:野生型U1−snRNA遺伝子(すなわち改変されていないU1−snRNA)の配列を含有するプラスミドは、BglIIおよびBclI制限酵素で消化された。これら2つの制限部位の間に含まれる配列は、結合配列を含む二本鎖オリゴヌクレオチドで置きかえられた。各オリゴヌクレオチドの順向きおよび逆向き配列が下の表1に記載されており、得られた改変U1−snRNAは利用されたオリゴヌクレオチドの後に命名されている。
含有するベクターは、リポフェクタミン(リポソーム)を用いる一過性のトランスフェクションによって細胞に挿入された。Trizolを用いて細胞の全RNAを抽出した後に、特異的プライマーを用いるRT−PCRによってRNAが分析された。
−前述した両方の酵素が正しく機能するのに適切なAMV/Tfl 5x緩衝液5μl;
−10mM dNTPミックス1μl;
−50pmolフォワードプライマーおよび50pmolリバースプライマー;
−25mM MgSO4 2μl;
−細胞抽出RNA 2μl;
−AMV−RT(0.1μ/μl)1μl、Tfl DNAポリメラーゼ1μl;
−超純水適量
を含有する最終容量25μLの混合物中で実施された。
第IX因子遺伝子(F9)において、エクソン5のドナー部位内の−2位におけるエクソン変異ならびにアクセプター部位内の−8および−9位における変異は、血友病Bと関連している。興味深いことに、エクソン中の−2位における変異は同義であり、コード配列を改変しないがエクソンスキッピングを誘発し、したがってそれらをスプライシング変異として分類できることに留意されたい。アクセプター部位内の−8および−9位における変異も、エクソン5のスキッピングを誘発する。
SMN1(pCI−SMN1)およびSMN2(pCI−SMN2)ミニ遺伝子を発現するベクターを使用して研究した(Huaら、2007)。そのようなミニ遺伝子は、SMN2遺伝子中のスプライシング不良を是正できる治療用分子の効果を確認するために、広く使用されている(Huaら、2007;Huaら、2008)。
嚢胞性線維症は、CFTR遺伝子中の変異によって引き起こされる。異常なエクソンスキッピングを誘発する、重篤な疾患形態と関連したエクソン12スプライシング部位中に局在している変異が、表6に示されている。エクソン12中に局在しているいくつかの変異は、エクソンスキッピングを誘発する(Paganiら、2003)。エクソン12の除去を誘発するエクソン変異が表7に示されている。
-Cartegni, L., S. L. Chew, and A. R. Krainer. 2002. Listening to silence and understanding nonsense: exonic mutations that affect splicing. Nat Rev Genet 3:285-98.
-Horowitz DS, Krainer AR. Mechanisms for selecting 5' splice sites in mammalian pre-mRNA splicing. Trends Genet. 1994 Mar;10(3):100-6.
-Hua, Y., T. A. Vickers, B. F. Baker, C. F. Bennett, and A. R. Krainer. 2007. Enhancement of SMN2 exon 7 inclusion by antisense oligonucleotides targeting the exon. PLoS Biol 5:e73.
-Hua, Y., T. A. Vickers, H. L. Okunola, C. F. Bennett, and A. R. Krainer. 2008. Antisense masking of an hnRNP A1/A2 intronic splicing silencer corrects SMN2 splicing in transgenic mice. Am J Hum Genet 82:834-48.
-Lorson, C. L., H. Rindt, and M. Shababi. Spinal muscular atrophy: mechanisms and therapeutic strategies. Hum Mol Genet 19:R111-8.
-Pagani, F., E. Buratti, C. Stuani, M. Romano, E. Zuccato, M. Niksic, L. Giglio, D. Faraguna, and F. E. Baralle. 2000. Splicing factors induce cystic fibrosis transmembrane regulator exon 9 skipping through a nonevolutionary conserved intronic element. J Biol Chem 275:21041-7.
-Pagani, F., E. Buratti, C. Stuani, R. Bendix, T. Dork, and F. E. Baralle. 2002. A new type of mutation causes a splicing defect in ATM. Nat Genet 30:426-9.
-Pagani, F., C. Stuani, M. Tzetis, E. Kanavakis, A. Efthymiadou, S. Doudounakis, T. Casals, and F. E. Baralle. 2003. New type of disease causing mutations: the example of the composite exonic regulatory elements of splicing in CFTR exon 12. Hum Mol Genet 12:1111-20.
-Pagani, F., and F. E. Baralle. 2004. Genomic variants in exons and introns: identifying the splicing spoilers. Nat Rev Genet 5:389-96.
-Pinotti, M., L. Rizzotto, D. Balestra, M. A. Lewandowska, N. Cavallari, G. Marchetti, F. Bernardi and F. PaganiI. Maestri, F. Pagani, and F. Bernardi. 2008. U1-snRNA mediated rescue of mRNA processing in severe factor VII deficiency. Blood 111:2681-2684
-Pinotti, M., D. Balestra, L. Rizzotto, I. Maestri, F. Pagani, and F. Bernardi. 2009. Rescue of coagulation factor VII function by the U1+5A snRNA. Blood 113:6461:6464
Claims (17)
- エクソンの50塩基対上流〜20塩基対下流に含まれる配列中に局在している変異によって引き起こされるエクソンのスキッピングを是正できる改変ヒトU1snRNA分子であって、野生型ヒトU1snRNAの5’領域の一本鎖ヌクレオチド配列の部分が、エクソンスキッピングを誘発する変異が有る治療対象となる標的遺伝子から転写されるmRNA前駆体上の標的ヌクレオチド配列とハイブリダイズできる一本鎖結合ヌクレオチド配列により置きかえられており、それがエクソンの50塩基対上流〜20塩基対下流に含まれる配列中の変異からなる群から選択され、標的配列がエクソン/イントロン接合部位の2〜50塩基対下流に含まれる標的遺伝子のmRNA前駆体の領域中に位置しており、その前駆体のスプライシングが前記変異の影響を受けていることを特徴とする改変ヒトU1snRNA分子。
- 前記結合ヌクレオチド配列により置きかえられている前記5’領域の前記部分が、長さ9〜20ヌクレオチドである、請求項1に記載の改変ヒトU1snRNA分子。
- 治療対象となる前記標的遺伝子が凝固第IX因子遺伝子、SMN2遺伝子またはCFTR遺伝子である、請求項1または2に記載の改変ヒトU1snRNA分子。
- 前記結合ヌクレオチド配列が、配列番号1、2、3、4、5、6、7、8、9、10からなる群から選択される、請求項1〜3のいずれかに記載の改変ヒトU1snRNA分子。
- エクソンスキッピングによって引き起こされるかまたはそれと関連した遺伝的疾患の治療的処置において使用するための、請求項1〜4のいずれかに記載の改変ヒトU1snRNA分子。
- 前記疾患が、嚢胞性線維症、血友病Bまたは脊髄性筋萎縮症である、請求項5に記載の改変ヒトU1snRNA分子。
- 請求項1〜4のいずれかに記載の改変ヒトU1snRNA分子をコードしている単離された遺伝子。
- プロモーター配列およびポリアデニル化シグナル配列を含む、請求項7に記載の単離された遺伝子。
- 前記プロモーターが、ヒトU1snRNAをコードしている前記遺伝子の内在性プロモーターである、請求項8に記載の単離された遺伝子。
- エクソンスキッピングによって引き起こされる遺伝的疾患の治療的処置において使用するための、請求項7〜9のいずれかに記載の単離された遺伝子。
- 前記疾患が、嚢胞性線維症、血友病Bまたは脊髄性筋萎縮症である、請求項10に記載の単離された遺伝子。
- 請求項7〜9のいずれかに記載の単離された遺伝子を含む発現ベクター。
- アデノ随伴ウイルスベクターである、請求項12に記載の発現ベクター。
- エクソンスキッピングによって引き起こされるかまたはそれに関連した遺伝的疾患の治療的処置において使用するための、請求項13または14に記載の発現ベクター。
- 前記疾患が、嚢胞性線維症、血友病Bまたは脊髄性筋萎縮症である、請求項14に記載の発現ベクター。
- 請求項1〜4のいずれかに記載の改変ヒトU1snRNA分子、または請求項7〜9のいずれかに記載の単離された遺伝子、または請求項12もしくは13に記載の発現ベクター、および医薬として許容できる担体を含む医薬組成物。
- エクソンスキッピングを誘発する変異が有る治療対象となる標的遺伝子の正しいスプライシングを培養細胞において回復するためのin vitroの方法であって、前記培養細胞に請求項12または13に記載の発現ベクターをトランスフェクトすることを含む方法。
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ITTO2010A000840 | 2010-10-15 | ||
ITTO2010A000840A IT1405793B1 (it) | 2010-10-15 | 2010-10-15 | Molecola di u1snrna umano modificato, gene codificante per la molecola di u1snrna umano modificato, vettore di espressione includente il gene, e loro uso in terapia genica |
PCT/IB2011/054573 WO2012049665A1 (en) | 2010-10-15 | 2011-10-14 | A modified human u1snrna molecule, a gene encoding for the modified human u1snrna molecule, an expression vector including the gene, and the use thereof in gene therapy |
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US9669109B1 (en) | 2015-11-24 | 2017-06-06 | Universita Di Ferrara | Modified human U1snRNA molecule, a gene encoding for the modified human U1snRNA molecule, an expression vector including the gene, and the use thereof in gene therapy of familial dysautonomia and spinal muscular atrophy |
EP3534922B1 (en) * | 2016-11-04 | 2024-04-17 | Takeda Pharmaceutical Company Limited | Adeno-associated virus formulations |
CN109486813B (zh) * | 2018-10-10 | 2022-01-18 | 广州医科大学附属第二医院 | 一种用于修复TPP1基因Pre-mRNA异常剪接的U1-snRNA及其应用 |
KR20220035338A (ko) * | 2019-07-23 | 2022-03-22 | 옥스포드 바이오메디카(유케이) 리미티드 | 렌티바이러스 벡터의 생산 향상 |
CN113444722B (zh) * | 2020-03-24 | 2024-09-24 | 中国科学院脑科学与智能技术卓越创新中心 | 单碱基编辑介导的剪接修复在制备治疗脊髓性肌萎缩症中的应用 |
CN114457072B (zh) * | 2021-04-19 | 2023-08-15 | 苏州系统医学研究所 | 一种具有抗病毒活性的多核苷酸及其用途 |
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US20230279397A1 (en) | 2022-03-04 | 2023-09-07 | Locanabio, Inc. | Compositions and methods comprising engineered short nuclear rna (snrna) |
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RU2013122109A (ru) | 2014-11-20 |
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