JP6846429B2 - ヒトβ−2ミクログロブリン遺伝子に見られる認識配列を有する操作されたメガヌクレアーゼ - Google Patents
ヒトβ−2ミクログロブリン遺伝子に見られる認識配列を有する操作されたメガヌクレアーゼ Download PDFInfo
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Description
本出願は、その開示全体が参照により本明細書に組み込まれる、2015年12月23日に出願された「ヒトβ−2ミクログロブリン遺伝子に見られる認識配列を有する操作されたメガヌクレアーゼ」と題された米国仮特許出願第62/387318号及び2016年11月2日に出願された「ヒトβ−2ミクログロブリン遺伝子に見られる認識配列を有する操作されたメガヌクレアーゼ」と題された米国仮特許出願第62/416513号に基づく優先権を主張する。
本出願と共に、その全体が参照により本明細書に組み込まれる配列表の紙コピーが提出されている。この紙コピーは、同様にその全体が参照により本明細書に組み込まれるASCII形式のコピーに対応する。2016年12月20日に作成された前記ASCIIコピーは、2000706−00181WO1.txtという名前で、サイズが741693バイトである。
配列番号1は、ヒトβ−2ミクログロブリン遺伝子の核酸配列を示す。
を示す。
本開示は、ヒトβ−2ミクログロブリン遺伝子(配列番号1)内に見られる認識配列を認識及び切断する操作されたヌクレアーゼを用いて遺伝子改変細胞を作製する方法を提供する。このような認識配列での切断は、切断部位でのNHEJ及びβ−2ミクログロブリンポリペプチドの発現破壊を可能にし、よってHLA遺伝子によってコードされる内因性MHCクラスI受容体の集合及び活性化を妨害することができる。更に、このような認識配列での切断は更に、外因性核酸配列の直接的なβ2ミクログロブリン遺伝子への相同組換えを可能にすることができる。
いくつかの実施形態では、本開示は、本開示の遺伝子改変細胞又は遺伝子改変細胞の集団と、医薬担体とを含む医薬組成物を提供する。このような医薬組成物は、公知の技術によって調製される。例えば、Remington、The Science and Practice of Pharmacy(第21版2005)を参照されたい。本開示による医薬製剤の製造では、細胞が、典型的には、薬学的に許容される担体と混和され、得られた組成物が対象に投与される。担体は、当然、製剤中の他の成分と相溶性であるという意味で許容されなければならず、対象に有害であってはならない。いくつかの実施形態では、本開示の医薬組成物が、対象の疾患の治療に有用な1種又は複数の更なる薬剤を更に含むことができる。遺伝子改変細胞が遺伝子改変ヒトT細胞(又はそれに由来する細胞)である更なる実施形態では、本開示の医薬組成物が、インビボでの細胞増殖及び生着を促進するサイトカイン(例えば、IL−2、IL−7、IL−15、及び/又はIL−21)等の生物学的分子を更に含むことができる。本開示の遺伝子改変細胞を含む医薬組成物は、更なる薬剤又は生物学的分子と同じ組成物で投与される、あるいは、別個の組成物で同時投与される。
この試験の目的は、B2MノックアウトT細胞がB2M陽性T細胞と比較して減少したアロゲニシティを示すかどうかを実証することであった。
Claims (20)
- ヒトβ−2ミクログロブリン遺伝子内の配列番号2からなる認識配列と結合及び切断する組換えメガヌクレアーゼであって、第1のサブユニット及び第2のサブユニットを含み、前記第1のサブユニットは前記認識配列の第1の認識半部位に結合し、第1の超可変(HVR1)領域を含み、前記第2のサブユニットは前記認識配列の第2の認識半部位に結合し、第2の超可変(HVR2)領域を含み、前記設計されたメガヌクレアーゼは、配列番号12と少なくとも97%の配列同一性を有するアミノ酸配列を含む、組換えメガヌクレアーゼ。
- 前記第1のサブユニットが、配列番号12の残基198〜344と少なくとも97%の配列同一性を有するアミノ酸配列を含み、前記第2のサブユニットが、配列番号12の残基7〜153と少なくとも97%の配列同一性を有するアミノ酸配列を含む、請求項1に記載の組換えメガヌクレアーゼ。
- 前記第1のサブユニットが、配列番号12の残基198〜344を含む、請求項1又は2に記載の組換えメガヌクレアーゼ。
- 前記第2のサブユニットが、配列番号12の残基7〜153を含む、請求項1〜3のいずれか1項に記載の組換えメガヌクレアーゼ。
- 配列番号12のアミノ酸配列を含む、請求項1〜4のいずれか1項に記載の組換えメガヌクレアーゼ。
- 請求項1〜5のいずれか1項に記載の前記組換えメガヌクレアーゼをコードする核酸配列を含む、単離されたポリヌクレオチド。
- 請求項6に記載の前記単離されたポリヌクレオチドを含む、組換えDNA構築物。
- 組換えアデノ随伴ウイルス(AAV)ベクターをコードする、請求項7に記載の組換えDNA構築物。
- 請求項6に記載の前記単離されたポリヌクレオチドを含む、組換えAAVベクター。
- 生体外(エクスビボ)で真核細胞(ヒト配偶子、ヒト接合子、ヒト胚盤胞、及びヒト胚性幹細胞を除く)の染色体に挿入された対象となる外因性配列を含む遺伝子改変真核細胞を作製する方法であって、
(a)請求項1〜5のいずれか1項に記載の組換えメガヌクレアーゼをコードする核酸配列;及び
(b)前記対象となる配列を含む核酸配列;
を含む1又は複数の核酸で真核細胞をトランスフェクトすることを含み;
前記組換えメガヌクレアーゼが配列番号2からなる認識配列で前記染色体中に切断部位を生成し、前記対象となる配列が前記切断部位で前記染色体に挿入される、方法。 - 生体外(エクスビボ)で真核細胞(ヒト配偶子、ヒト接合子、ヒト胚盤胞、及びヒト胚性幹細胞を除く)の染色体に挿入された対象となる外因性配列を含む遺伝子改変真核細胞を作製する方法であって、
(a)請求項1〜5のいずれか1項に記載の前記組換えメガヌクレアーゼを真核細胞に導入することと;
(b)前記対象となる配列を含む核酸で前記真核細胞をトランスフェクトすることと;
を含み;
前記組換えメガヌクレアーゼが配列番号2からなる認識配列で前記染色体中に切断部位を生成し、前記対象となる配列が前記切断部位で前記染色体に挿入される、方法。 - 前記対象となる配列を含む前記核酸が前記切断部位に隣接する配列と相同な配列を更に含み、前記対象となる配列が相同組換えによって前記切断部位で挿入される、請求項10又は11に記載の方法。
- 前記対象となる配列がキメラ抗原受容体をコードする、請求項10〜12のいずれか1項に記載の方法。
- 少なくとも前記対象となる配列を含む前記核酸が組換えAAVベクターによって前記真核細胞に導入される、請求項10〜13のいずれか1項に記載の方法。
- 前記真核細胞がヒトT細胞又はそれに由来する細胞である、請求項10〜14のいずれか1項に記載の方法。
- 前記真核細胞が、細胞表面に内因性T細胞受容体を発現しない、請求項10〜15のいずれか1項に記載の方法。
- 生体外(エクスビボ)で真核細胞(ヒト配偶子、ヒト接合子、ヒト胚盤胞、及びヒト胚性幹細胞を除く)の染色体中の標的配列を破壊することによって遺伝子改変真核細胞を作製する方法であって、
請求項1〜5のいずれか1項に記載の前記組換えメガヌクレアーゼをコードする核酸で前記真核細胞をトランスフェクトすることを含み;
前記メガヌクレアーゼが配列番号2からなる認識配列で前記染色体中に切断部位を生成し、前記標的配列が前記切断部位で非相同末端結合によって破壊され、前記遺伝子改変真核細胞が、細胞表面にβ−2ミクログロブリンを発現しない、方法。 - 生体外(エクスビボ)で真核細胞(ヒト配偶子、ヒト接合子、ヒト胚盤胞、及びヒト胚性幹細胞を除く)の染色体中の標的配列を破壊することによって遺伝子改変真核細胞を作製する方法であって、
請求項1〜5のいずれか1項に記載の前記組換えメガヌクレアーゼを前記真核細胞に導入することを含み;
前記メガヌクレアーゼが配列番号2からなる認識配列で前記染色体中に切断部位を生成し、前記標的配列が前記切断部位で非相同末端結合によって破壊され、前記遺伝子改変真核細胞が、細胞表面にβ−2ミクログロブリンを発現しない、方法。 - 前記真核細胞がヒトT細胞又はそれに由来する細胞である、請求項17又は18に記載の方法。
- 前記真核細胞が、細胞表面に内因性T細胞受容体を発現しない、請求項17〜19のいずれか1項に記載の方法。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2021101704A (ja) * | 2015-12-23 | 2021-07-15 | プレシジョン バイオサイエンシズ,インク. | ヒトβ−2ミクログロブリン遺伝子に見られる認識配列を有する操作されたメガヌクレアーゼ |
JP7203873B2 (ja) | 2015-12-23 | 2023-01-13 | プレシジョン バイオサイエンシズ,インク. | ヒトβ-2ミクログロブリン遺伝子に見られる認識配列を有する操作されたメガヌクレアーゼ |
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JP2021101704A (ja) | 2021-07-15 |
CA3009637A1 (en) | 2017-06-29 |
EP3394253B1 (en) | 2021-09-01 |
AU2016379393A1 (en) | 2018-07-12 |
EP3988655A3 (en) | 2022-08-03 |
JP7203873B2 (ja) | 2023-01-13 |
JP2023052095A (ja) | 2023-04-11 |
US20210032664A1 (en) | 2021-02-04 |
US20190017075A1 (en) | 2019-01-17 |
AU2016379393B2 (en) | 2023-01-05 |
JP2018538000A (ja) | 2018-12-27 |
EP3394253A1 (en) | 2018-10-31 |
AU2023202035A1 (en) | 2023-04-27 |
WO2017112859A1 (en) | 2017-06-29 |
EP3988655A2 (en) | 2022-04-27 |
ES2901000T3 (es) | 2022-03-21 |
US20240052373A1 (en) | 2024-02-15 |
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