JP7027169B2 - バイオセーフティーのためのリガンド依存性必須遺伝子をもつ合成栄養要求体 - Google Patents
バイオセーフティーのためのリガンド依存性必須遺伝子をもつ合成栄養要求体 Download PDFInfo
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- JP7027169B2 JP7027169B2 JP2017560703A JP2017560703A JP7027169B2 JP 7027169 B2 JP7027169 B2 JP 7027169B2 JP 2017560703 A JP2017560703 A JP 2017560703A JP 2017560703 A JP2017560703 A JP 2017560703A JP 7027169 B2 JP7027169 B2 JP 7027169B2
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Description
本願は、参照によりその全文が本明細書に援用される、2015年5月28日出願の米国特許仮出願第62/167,854号に対する優先権およびその利益を主張する。
本発明は、米国国立科学財団に授与された1151220号の下、政府支援を受けてなされた。政府は本発明に一定の権利を有する。
該当なし
(a)生物において1または複数の必須遺伝子および必須遺伝子産物を特定することと、
(b)1または複数のリガンドを選択することと、
(c)少なくとも1つの必須遺伝子を修飾して必須遺伝子産物にリガンド依存性機能を生じることと、
(d)1または複数の変異したリガンド依存性必須遺伝子をもつ生物を負に選択すること
を含み、
(e)必須遺伝子機能は前記リガンドの不在下では生じない
方法。
抗生物質を用いて1または複数の変異リガンド依存性必須遺伝子をもつ生物を負に選択することをさらに含む、前述したあらゆる態様の方法。
(a)生物において1または複数の必須遺伝子および必須遺伝子産物を特定することと、
(b)必須遺伝子変異体のライブラリーを調製することと、
(c)1または複数のリガンドを選択することと、
(d)選択されたリガンドおよび正の成長条件の存在下で必須遺伝子変異体の前記ライブラリーで正の選択を実施することと、
(e)負の成長条件で前記選択されたリガンドの不在下で必須遺伝子変異体の前記ライブラリーで負の選択を実施することと、
(f)負の選択の生存株を収集すること、
を含み、
(g)負の選択の前記負の成長条件が成長する生物を除去する
方法。
生物を望ましい表現型について選別すること
をさらに含む、前述したあらゆる態様の方法。
(a)1または複数の変異リガンド依存性必須遺伝子をもつ生物を含み、前記1または複数の変異リガンド依存性必須遺伝子が1または複数の遺伝的に誘導された表現型を生成し、
(b)1または複数の特異的リガンドの存在が前記1または複数の遺伝的に誘導された表現型を逆転させる、合成栄養要求体。
特許請求の範囲において、要素を単数の要素として参照しているものは、特段の記載がない限り「1つおよび1つのみ」を意味しているものではなく、「1つ以上」を意味することを意図している。当業者に知られている開示された実施形態の要素と構造的、化学的および機能的に等価のものはすべて、本明細書に参照により明確に援用されたものとされ、本特許請求の範囲に包含されるものとする。さらに、本開示にない要素、構成部品または方法ステップは、その要素、構成部品または方法ステップが特許請求の範囲に明確に記載されているか否かにかかわらず、公にされるためのものであることが意図される。本願の請求項の要素は、「~するための手段」という表現を用いて明確に要素を記載していない限り、「ミーンズ・プラス・ファンクション」として解釈されるべきではない。本願の請求項の要素は、「~するためのステップ」という表現を用いて明確に要素を記載していない限り、「ステップ・プラス・ファンクション」として解釈されるべきではない。
Claims (19)
- リガンド依存性必須遺伝子機能に基づいて人工的な栄養要求体を生成するための方法であって、前記方法が、
(a)生物において、pheS、dnaN、tyrS、metG又はadkである、1または複数の必須遺伝子および必須遺伝子産物を特定することと、
(b)ベンゾチアゾール、インドール、インドール-3-酪酸もしくは2-アミノベンゾチアゾール又はuniRapRに対するリガンドとして用いられるラパマシンである、1または複数のリガンドを選択することと、
(c)少なくとも1つの必須遺伝子を修飾して必須遺伝子産物に変異リガンド依存性機能を生じさせることと、
(d)1または複数の変異したリガンド依存性必須遺伝子をもつ生物に対して負の選択をすること
を含み、
(e)必須遺伝子機能は前記リガンドの不在下では生じない
方法。 - 負の選択の生存生物に正の選択をして、リガンド依存性必須遺伝子を有する生存生物の数を増やすことをさらに含む、請求項1に記載の方法。
- 負の選択の後に1または複数の変異リガンド依存性必須遺伝子をもつ生物に正の選択をすること;および
抗生物質を用いて1または複数の変異リガンド依存性必須遺伝子をもつ生物を負の選択をすることをさらに含む、請求項1に記載の方法。 - 必須遺伝子の前記修飾が、エラープローンPCR、UV突然変異誘発、化学突然変異誘発および突然変異誘発株からなる群から選択されるプロセスを用いて、必須遺伝子のオープンリーディングフレームのランダム突然変異誘発によって実施される、請求項1に記載の方法。
- 必須遺伝子の前記修飾が、リコンビニアリング、多重自動ゲノム工学法(MAGE)、酵素逆転ポリメラーゼ連鎖反応(EIPCR)および重複伸長による遺伝子スプライシング(SOEING)の群から選択されるプロセスを用いて、1または複数のアミノ酸についての必須遺伝子のオープンリーディングフレームの標的突然変異誘発によって実施される、請求項1に記載の方法。
- 必須遺伝子の前記修飾が、前記必須遺伝子産物にリガンド依存性機能を付与するリガンド結合ドメインのNもしくはC末端融合である、請求項1に記載の方法。
- 必須遺伝子の前記修飾が、前記必須遺伝子を機能化するためにリガンド依存性スプライシングを付与するリガンド依存性インテインドメインである、請求項1に記載の方法。
- 第2の必須遺伝子を修飾して、第2のリガンドに応答して第2の必須遺伝子産物にリガンド依存性機能を生じることをさらに含む、請求項1に記載の方法。
- 前記2つのリガンド依存性必須遺伝子が、構造遺伝子、調節遺伝子およびシグナル伝達遺伝子の群から選択される遺伝子である、請求項8に記載の方法。
- リガンド依存性必須遺伝子機能に基づいて人工的な栄養要求体を生成するための方法であって、前記方法が
(a)生物において、pheS、dnaN、tyrS、metG又はadkである、1または複数の必須遺伝子および必須遺伝子産物を特定することと、
(b)必須遺伝子変異体のライブラリーを調製することと、
(c)ベンゾチアゾール、インドール、インドール-3-酪酸もしくは2-アミノベンゾチアゾール又はuniRapRに対するリガンドとして用いられるラパマシンである、1または複数のリガンドを選択することと、
(d)選択されたリガンドおよび正の成長条件の存在下で必須遺伝子変異体の前記ライブラリーで正の選択を実施することと、
(e)負の成長条件で前記選択されたリガンドの不在下で必須遺伝子変異体の前記ライブラリーで負の選択を実施することと、
(f)負の選択の生存株を収集すること、
を含み、
(g)負の選択の前記負の成長条件が成長する生物を除去する
方法。 - 負の選択の収集した生存株の正の選択を実施してリガンド依存性必須遺伝子を有する生存生物の数を増やすことと、
生物を望ましい表現型について選別すること
をさらに含む、請求項10に記載の方法。 - 必須遺伝子変異体の前記ライブラリーが、エラープローンPCR、UV突然変異誘発、化学突然変異誘発および突然変異誘発株からなる群から選択されるプロセスを用いて、必須遺伝子のオープンリーディングフレームのランダム突然変異誘発を使用して生成される、請求項10に記載の方法。
- 必須遺伝子変異体の前記ライブラリーが、リコンビニアリング、多重自動ゲノム工学法(MAGE)、酵素逆転ポリメラーゼ連鎖反応(EIPCR)および重複伸長による遺伝子スプライシング(SOEING)の群から選択されるプロセスを用いて、1または複数のアミノ酸についての必須遺伝子のオープンリーディングフレームの標的突然変異誘発を使用して生成される、請求項10に記載の方法。
- 必須遺伝子変異体の前記ライブラリーが、前記必須遺伝子産物にリガンド依存性機能を付与するリガンド結合ドメインのNもしくはC末端融合を使用して生成される、請求項10に記載の方法。
- 前記融合リガンド結合ドメインが、リンカーをさらに含む、請求項14に記載の方法。
- 前記融合リガンド結合ドメインが、ホルモン受容体、糖結合タンパク質およびアロステリック制御剤の群から選択される、請求項14に記載の方法。
- 必須遺伝子変異体の前記ライブラリーが、前記必須遺伝子産物にリガンド依存性機能を付与するリガンド結合ドメインの挿入融合を使用して生成される、請求項10に記載の方法。
- 必須遺伝子変異体の前記ライブラリーが、前記必須遺伝子を機能化するためにリガンド依存性スプライシングを付与するリガンド依存性インテインドメインの挿入融合を使用して生成される、請求項10に記載の方法。
- 前記負の選択が抗生物質を含む、請求項10に記載の方法。
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JP2011055721A (ja) | 2009-09-07 | 2011-03-24 | Kinki Univ | セスキテルペン変換酵素遺伝子及びそれを利用した酸化セスキテルペンの製造方法 |
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EP3303581A4 (en) | 2018-12-05 |
WO2016191757A1 (en) | 2016-12-01 |
US11225657B2 (en) | 2022-01-18 |
US20180155711A1 (en) | 2018-06-07 |
EP3303581A1 (en) | 2018-04-11 |
JP2021118715A (ja) | 2021-08-12 |
JP2018516568A (ja) | 2018-06-28 |
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