JP7728709B2 - バチルス(Bacillus)でのフコシル化オリゴ糖の生産 - Google Patents
バチルス(Bacillus)でのフコシル化オリゴ糖の生産Info
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Description
第1の態様によれば、フコシル化オリゴ糖の生産のためのバチルス属の非芽胞形成細菌細胞が提供され、バチルス細胞は、ラクトースパーミアーゼ、GDP-フコース生合成経路、及びフコシルトランスフェラーゼを有する。
- バチルス属の非芽胞形成細菌細胞を提供することであって、前記バチルス細胞はラクトースパーミアーゼ、GDP-フコース生合成経路、及びラクトース受容フコシルトランスフェラーゼを有すること;
- ラクトースを含有する培養培地において、バチルス細胞がフコシル化オリゴ糖を生産することに許容的である条件下で、バチルス細胞を培養すること;並びに
- 任意選択的に、培養培地及び/又はバチルス細胞からフコシル化オリゴ糖を回収すること
を含む方法が提供される。
1.フルクトース-6-リン酸イソメラーゼ;
2.ホスホマンノムターゼ;
3.GDP:マンノース-1-リン酸グアニリルトランスフェラーゼ;
4.GDP-マンノース-4,6-デヒドラターゼ;及び
5.GDP-フコースシンターゼ
の活性を含む。
α-D-マンノース-1-リン酸+GTP+H+=>二リン酸+GDP-α-D-マンノース
によるGDP-マンノースの形成である。
I.フコースキナーゼ;及び
II.L-フコース-1-リン酸グアニリルトランスフェラーゼ
を含む。
- ラクトースパーミアーゼ、GDP-フコース生合成経路、及びフコシルトランスフェラーゼを有するように遺伝子操作されている非芽胞性バチルス細胞を提供すること
- ラクトースを含有する培養培地において、フコシル化オリゴ糖の生産に許容的である条件下でバチルス細胞を培養すること、並びに
- 任意選択的に、フコシル化オリゴ糖を培養培地から及び/又はバチルス細胞から回収すること
を含む方法が提供される。
バチルス・サブチリスは種々の技法により遺伝子操作することができる。バチルス・サブチリスの形質転換では、コンピテント細胞は2ステップ法の改変プロトコルにより調製した(Anagnostopoulos,C.及びSpizizen,J.(1961)J Bacteriol 81(5):741~746頁)。一晩培養物をMG1培地で接種し、37℃で振盪した。MG1培地はSpizizen最少培地であり、この培地は0.5%のグルコース、5mMのMgSO4及び0.02%のカザミノ酸を補充している(任意選択的に、ビオチン及び/又はL-トリプトファンをさらに補充される)。次の日の朝、この培養物は1対20で新鮮なMG1培地に希釈し、37℃でおよそ6時間インキュベートした。1mlの培養物を8mlのMG2培地に希釈したが、この培地はカザミノ酸の濃度がMG1培地とは異なっている(0.02%の代わりに0.01%)。短縮したプロトコルで、一晩培養物はMG2培地に直接希釈する。さらに90分間の接種後、培養物の1ml部分を1~3μgの多量体プラスミドDNA又は直鎖状DNAと混合し、振盪しながら37℃で30~60分間インキュベートした。多量体プラスミドDNAは、プラスミドDNAの増殖用にエシェリキア・コリ株NM538を使用することにより又はシングルカッター制限酵素での消化によるプラスミドの線状化により入手した。この制限酵素は骨格内で切断し、続いてT4 DNAリガーゼで再ライゲーションする。
芽胞形成欠損バチルス・サブチリス株(表1)の代謝工学的操作は、異種遺伝子エシェリキア・コリmanC、エシェリキア・コリmanB及びエシェリキア・コリmanAの組込み並びに相同組換えによる内因性遺伝子lacAの同時欠失により達成された。バチルス・サブチリス遺伝子ganA(yvfN、lacA)は、ガラクタンオペロン内に位置しているが、ベータガラクトシダーゼをコードしている。
実施例2に記載されているA株を親株として使用した。ラクトース及びGDP-マンノースからの2’-フコシルラクトースの生産のため、さらに、エシェリキア・コリ遺伝子lacY、gmd、wcaG及びwbgLをA株の内因性amyE(amyA)遺伝子座(アルファアミラーゼをコードしている)に組み込んだ。
GDP-フコース及び外因性ラクトースからの2’-フコシルラクトースの生産では、最初、エシェリキア・コリ遺伝子lacYを内因性amyE(amyA)遺伝子座(アルファアミラーゼをコードしている)中に組み込んだ。ラクトースパーミアーゼをコードするエシェリキア・コリlacY遺伝子(Gene Bank受託番号:NP_414877.1)のオープンリーディングフレームは、染色体DNAからPCRにより増幅させた。組込みカセット<flank amyE up-lox71- aad9-lox66-P43-lacY-flank amyE down>(配列番号4)を構築し、pBR322(New England Biolabs GmbH、Frankfurt、Germany)中にクローニングした。バチルス・サブチリスをこうして得られたプラスミドでその天然のコンピテンスにより形質転換した。B株を産するバチルス・サブチリスゲノムのamyE遺伝子座中への発現カセット<P43-lacY>の組込みは、コロニーPCRにより確認した。遺伝子発現は、標的化されたプロテオミクスにより及び/又はリアルタイムPCRにより確認した。
前培養物を、2’-フコシルラクトースの生合成に適した代謝的に操作されたバチルス・サブチリス株で接種した(それぞれ実施例2、3及び4に記載されている)。
Claims (10)
- フコシル化オリゴ糖の生産のための非芽胞形成バチルス(Bacillus)細胞であって、ラクトースパーミアーゼ、デノボGDP-フコース生合成経路及びフコシルトランスフェラーゼを有するように遺伝子操作されている細胞であって、
ここで前記バチルス細胞は、yesZ及びganAからなる群から選択される遺伝子のうちの少なくとも1つの欠失又は機能的不活化により遺伝子操作されている、バチルス細胞。 - 芽胞形成が、Spo0A、sigmaE及びsigmaFをコードする遺伝子のうちの1つ以上の欠失又は機能的不活化により損なわれている、請求項1に記載のバチルス細胞。
- ラクトースパーミアーゼが、エシェリキア・コリ(Escherichia coli)LacYである、請求項1又は2に記載のバチルス細胞。
- GDP-フコースサルベージ経路をさらに含む、請求項1~3のいずれか一項に記載のバチルス細胞。
- フコシルトランスフェラーゼが、α-1,2-フコシルトランスフェラーゼ及びα-1,3-フコシルトランスフェラーゼの群から選択されるラクトース受容フコシルトランスフェラーゼである、請求項1~4のいずれか一項に記載のバチルス細胞。
- バチルス・サブチリス(B.subtilis)細胞である、請求項1~5のいずれか一項に記載のバチルス細胞。
- フコシル化オリゴ糖の生産のための、請求項1~6のいずれか一項に記載のバチルス細胞の使用。
- - 請求項1~6のいずれか一項に定義される非芽胞形成バチルス細胞を提供し;
- 培地において、フコシル化オリゴ糖の生産に許容的である条件下でバチルス細胞を培養し;並びに、
- 培地及び/又はバチルス細胞からフコシル化オリゴ糖を回収する
フコシル化オリゴ糖の生産のための方法。 - 培地がラクトースを含む、請求項8に記載の方法。
- 培地がL-フコースを含有する、請求項8又は9に記載の方法。
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| EP19179803.2A EP3751003A1 (en) | 2019-06-12 | 2019-06-12 | Production of fucosylated oligosaccharides in bacillus |
| EP19179803.2 | 2019-06-12 | ||
| PCT/EP2020/065835 WO2020249512A1 (en) | 2019-06-12 | 2020-06-08 | Production of fucosylated oligosaccharides in bacillus |
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| CN109735479B (zh) * | 2019-01-30 | 2022-04-01 | 光明乳业股份有限公司 | 一种合成2’-岩藻糖基乳糖的重组枯草芽孢杆菌及其构建方法与应用 |
| CA3188909A1 (en) * | 2020-08-10 | 2022-02-17 | Sofie AESAERT | Production of an oligosaccharide mixture by a cell |
| EP4019534A1 (en) * | 2020-12-22 | 2022-06-29 | Chr. Hansen HMO GmbH | Microbial cells possessing a reduced lactose internalization for producing an oligosaccharide |
| KR102633804B1 (ko) * | 2020-12-31 | 2024-02-05 | 주식회사 삼양사 | 재조합 바실러스 속 미생물 및 이를 이용한 모유올리고당 제조방법 |
| KR102793833B1 (ko) * | 2020-12-31 | 2025-04-11 | 주식회사 삼양사 | 푸코오스 전이효소를 발현하는 재조합 미생물 및 이를 이용한 2’-푸코실락토오스 제조방법 |
| CN114480465B (zh) * | 2022-03-08 | 2024-03-26 | 江南大学 | 一种产生2’-岩藻糖基乳糖的枯草芽孢杆菌及其应用 |
| CN115838682A (zh) * | 2022-12-01 | 2023-03-24 | 南京诺云生物科技有限公司 | 一种利用甘露聚糖高效生产2′-岩藻糖基乳糖的地衣芽孢杆菌工程菌株 |
| WO2024144124A1 (ko) * | 2022-12-30 | 2024-07-04 | 주식회사 삼양사 | 푸코실락토오스를 생산하는 재조합 미생물 및 이를 이용한 푸코실락토오스 생산방법 |
| WO2025113326A1 (zh) * | 2023-11-30 | 2025-06-05 | 山东恒鲁生物科技有限公司 | Gdp-岩藻糖合成酶多肽及其应用 |
| CN120818475A (zh) * | 2024-04-11 | 2025-10-21 | 柯泰亚生物科技(上海)有限公司 | 生产岩藻糖基化低聚糖的方法及其应用 |
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| JP2017538433A (ja) | 2014-12-19 | 2017-12-28 | ダニスコ・ユーエス・インク | タンパク質の発現増大 |
| CN108949784A (zh) | 2018-08-06 | 2018-12-07 | 齐鲁工业大学 | 芽孢形成相关基因sigmaF在产酶中的应用 |
| CN109735479A (zh) | 2019-01-30 | 2019-05-10 | 光明乳业股份有限公司 | 一种合成2’-岩藻糖基乳糖的重组枯草芽孢杆菌及其构建方法与应用 |
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| KR20220020826A (ko) | 2022-02-21 |
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| CN113966390A (zh) | 2022-01-21 |
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