JPWO2015190457A1 - 組換えブレビバチルス属細菌を用いた組換え蛋白質の製造方法 - Google Patents
組換えブレビバチルス属細菌を用いた組換え蛋白質の製造方法 Download PDFInfo
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- JPWO2015190457A1 JPWO2015190457A1 JP2016527806A JP2016527806A JPWO2015190457A1 JP WO2015190457 A1 JPWO2015190457 A1 JP WO2015190457A1 JP 2016527806 A JP2016527806 A JP 2016527806A JP 2016527806 A JP2016527806 A JP 2016527806A JP WO2015190457 A1 JPWO2015190457 A1 JP WO2015190457A1
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Abstract
Description
プロテインAのCドメインの29番目のGlyをAlaに改変し5連結したタンパク質のアミノ酸配列(配列番号18、以下C−G29Aとする。)から逆翻訳を行い、該タンパク質をコードするDNA配列を設計した。該タンパク質のコドン使用頻度が、ブレビバチルス・チョウシネンシスHPD31株で大量に発現している細胞表層タンパク質であるHWP(J.Bacteriol.,172,p.1312−1320,1990)のコドン使用頻度に近くなるように、かつ、5個の各ドメインをコードする塩基配列の配列同一性が低くなるように考慮して、コドンを分配した。また、5連結ドメインをコードする配列の5’側にPstI、および、3’側にXbaIの制限酵素認識部位を作製した。作製したDNA断片の配列を配列番号22に記した。作製したDNA断片をPstIおよびXbaI(ともにTakara社製)で消化し、アガロースゲル電気泳動で分画、精製した。一方、ブレビバチルス属細菌用のプラスミドベクターであるpNCMO2(Takara社製)を、PstIおよびXbaIにより消化後、精製回収した。両者を混合後、Ligation High(TOYOBO社製)を用いて連結して、プラスミドベクターpNCMO2−C−G29Aを構築した。このプラスミドベクターを用いて、ブレビバチルス・チョウシネンシスSP3株(Takara社製)の形質転換を行い、ブレビバチルス・チョウシネンシスSP3(pNCMO2−C−G29A)を作製した。
製造例1にて得られたブレビバチルス・チョウシネンシスSP3(pNCMO2−C−G29A)を、A培地(ペプトン1.5%、酵母エキス0.4%、グルコース2%、リン酸塩0.38%、MgSO4・7H2O 0.02%、MnSO4・4H2O 0.002%、FeSO4・7H2O 0.002%、ZnSO4・7H2O 0.0002% pH7.2、培養開始後6時間目から48時間目にかけてグルコース3.8%分を連続添加)にディスホームCC−118を750ppm添加し、28、30、32、34、36℃の各培養温度にて、好気的条件下でpHを7.0から7.2に制御しながら培養を行った。
製造例1にて得られたブレビバチルス・チョウシネンシスSP3(pNCMO2−C−G29A)を、A培地(ただしグルコースの連続添加は、培養開始6時間後から30時間後にかけて4.8%分を添加することで行った)にディスホームCC−118を750ppm添加し、好気的条件下でpHを7.0から7.2に制御しながら培養した。培養は、培養温度を培養開始から13.5時間目まで36℃で培養し、培地の相対濁度が33%になった後、30℃に温度シフトして培養終了まで培養する条件により行った。
培養を、培養開始から終了まで30℃の一定温度の条件で行った以外は、実施例1と同じ操作を行った。結果を表2に示す。
製造例1にて得られたブレビバチルス・チョウシネンシスSP3(pNCMO2−C−G29A)を、A培地にディスホームCC−118を750ppm添加し、好気的条件下でpHを7.0から7.2に制御しながら培養した。培養は、培養温度を培養開始から13.5時間目まで34℃で培養し、培地の相対濁度が22%になった後、30℃に温度シフトして培養終了まで培養する条件により行った。
培養を、培養開始から終了まで30℃の一定温度の条件で行った以外は、実施例2と同じ操作を行った。結果を表3に示す。
pNH326(J.Bacteriol.,1995,177:745−749)に含まれるMWPのP5プロモーターをMWPのP2プロモーターに変換して、ブレビバチルス発現ベクターpNK3260を以下のように構築した。まず、pNH326を鋳型として、配列番号23および24に示した塩基配列を有する2つのオリゴヌクレオチドプライマーPrimer−1およびPrimer−2を用いてPCRを行い、pNH326のうちMWPのP5プロモーターを除く部分を増幅し、その末端を制限酵素EcoRIとHindIII(共にTakara社製)とで消化した。次に、配列番号25に示した塩基配列を有するMWPのP2プロモーターを含む2本鎖DNA断片を定法に従い調製し、その末端を制限酵素MunIおよびHindIII(共にTakara社製)で消化した。これら2つのDNA断片をT4DNAリガーゼ(Takara社製)を用いて連結し、pNK3260を構築した。
スタフィロコッカス・アウレウス・コワンI株(JCM2179)を、T2液体培地(ポリペプトン1%、酵母エキス0.2%、グルコース1%、魚肉エキス0.5%、pH7.0)で37℃一晩振とう培養した。得られた培養液から菌体を遠心分離により回収後、10mMのトリス−塩酸緩衝液(pH8.0)で2度洗浄した。菌体を同緩衝液に懸濁後、1%SDSで溶菌し、60℃にて30分間加熱後、フェノール抽出及びエタノール沈殿等の定法により全ゲノムDNAを抽出した。なお、スタフィロコッカス・アウレウス・コワンI株(JCM2179)は独立行政法人 理化学研究所バイオリソースセンター 微生物材料開発室(JCM)(〒305−0074 茨城県つくば市高野台3−1−1)より入手することが出来る。
製造例3にて得られたブレビバチルス・チョウシネンシスHPD31−OK(Spa’−pNK3260)を、A培地(ただしグルコースの連続添加は、培養開始6時間後から48時間後にかけて5.0%分を添加することで行った)にディスホームCC−118を750ppm添加し、好気的条件下でpHを7.0から7.2に制御しながら培養した。培養は、培養温度を培養開始から13.5時間目まで34℃で培養し、培地の相対濁度が21%になった後、30℃に温度シフトして培養終了まで培養する条件により行った。培養開始から48時間後に培養液を採取し、参考例1と同様に培養上清中の組換え蛋白質SPA’濃度を測定した。また、培養開始から48時間後に培養液を採取し、分光光度計を用いて600nmにおける濁度を分析した。結果を表4に示す。
培養を、培養開始から終了まで30℃の一定温度の条件で行った以外は、実施例3と同じ操作を行った。結果を表4に示す。
Claims (7)
- 組換え蛋白質をコードする遺伝子を有するブレビバチルス属細菌を32℃以上で培養する高温培養工程、および
前記高温培養工程後、前記ブレビバチルス属細菌を32℃未満で培養する低温培養工程
を含む、組換え蛋白質の製造方法。 - 高温培養工程から低温培養工程への移行がブレビバチルス属細菌の生育における対数増殖期初期から中期の間に行われる、請求項1に記載の組換え蛋白質の製造方法。
- 組換え蛋白質が抗体結合性蛋白質である、請求項1または2に記載の組換え蛋白質の製造方法。
- 抗体結合性蛋白質がプロテインAのEドメイン、Dドメイン、Aドメイン、Bドメイン、またはCドメイン、プロテインGのCドメインまたはDドメイン、プロテインLのBドメイン、もしくはそれらの連結体または機能的変異体である、請求項3に記載の組換え蛋白質の製造方法。
- 組換え蛋白質が生理活性蛋白質である、請求項1または2に記載の組換え蛋白質の製造方法。
- 生理活性蛋白質がペプチドホルモンまたはその前駆体である、請求項5に記載の組換え蛋白質の製造方法。
- 組換え蛋白質が抗体または抗体様分子である、請求項1または2に記載の組換え蛋白質の製造方法。
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CN108064286A (zh) | 2015-01-26 | 2018-05-22 | 株式会社钟化 | 突变型免疫球蛋白κ链可变区结合性肽 |
WO2016121701A1 (ja) | 2015-01-26 | 2016-08-04 | 株式会社カネカ | 免疫グロブリンκ鎖可変領域含有タンパク質精製用アフィニティー分離マトリックス |
JPWO2017169751A1 (ja) * | 2016-03-29 | 2019-02-07 | イムラ・ジャパン株式会社 | 低温菌及び中温菌由来酵素の製造方法 |
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CN109055418A (zh) * | 2017-06-20 | 2018-12-21 | 江西嘉博生物工程有限公司 | 一种重组短短芽孢杆菌的构建方法 |
KR20190074439A (ko) | 2017-12-20 | 2019-06-28 | 목원대학교 산학협력단 | 암모니아 산화능을 지닌 브레비바실러스 sp. ATB1111 균주 |
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US20210324438A1 (en) * | 2018-09-07 | 2021-10-21 | Unichem Laboratories Ltd | An improved process for the preparation of recombinant lectin protein |
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EP3153581A4 (en) | 2017-12-20 |
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