JP2017108733A - ジンセノサイドグリコシダーゼを用いたマイナージンセノサイドの製造方法 - Google Patents
ジンセノサイドグリコシダーゼを用いたマイナージンセノサイドの製造方法 Download PDFInfo
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- JP2017108733A JP2017108733A JP2016125769A JP2016125769A JP2017108733A JP 2017108733 A JP2017108733 A JP 2017108733A JP 2016125769 A JP2016125769 A JP 2016125769A JP 2016125769 A JP2016125769 A JP 2016125769A JP 2017108733 A JP2017108733 A JP 2017108733A
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- Prior art keywords
- ginsenoside
- conversion
- minor
- glycosidase
- protein
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Abstract
【解決手段】ミクロバクテリウム属微生物由来のジンセノサイドグリコシダーゼタンパク質を用いたマイナージンセノサイドの製造方法、前記タンパク質を含むマイナージンセノサイドへの変換用組成物。前記タンパク質、前記タンパク質をコードする核酸、前記核酸を含むベクター、前記ベクターが導入された形質転換体。メジャージンセノサイドのマイナージンセノサイドの変換がRg1からF1へ、Rh1からPPTへ、ReからF1へ、Rg2からPPTへ及びRfからF1への変換であるマイナージンセノサイドの製造方法。
【選択図】図4
Description
本発明においては、メジャージンセノサイドをマイナージンセノサイドに変換する新規なジンセノサイドグリコシダーゼを作製するために、まずミクロバクテリウム・テスタセウム(Microbacterium testaceum)から配列番号1のジンセノサイドグリコシダーゼ(gincenoside glycosidase)をスクリーニングし、これをMT619と命名した。前記MT619をミュータジェネックス(mutagenex, 米国)に依頼して、コリネバクテリウム・グルタミカム(Corynebacterium glutamicum)から発現させるために、MT619の塩基配列を最適化した(配列番号2)。
実施例1のジンセノサイドグリコシダーゼを大量生産するために、前記形質転換された菌株をアンピシリン(Ampicillin)が添加されたLB培地100mlの入った三角フラスコに接種し、600nmにおける吸光度が0.6になるまで37℃の振盪培養器にて200rpmで種菌培養を行った。可溶性タンパク質が発現するか否かを各温度(18,22,25,30,37℃)で確認し、これにIPTG(isopropyl-beta-D-thiogalactoside)を最終濃度が0.1mMとなるように添加することにより、本発明のジンセノサイドグリコシダーゼの大量発現を誘導した。菌株が静止期(stationary phase)に入ったら、菌株の培養液を6,000×gで4℃にて10分間遠心分離し、100mMリン酸ナトリウム緩衝液(Sodium phosphate buffer, pH7.0)を添加して懸濁し、その後前記細胞溶液を破砕機(sonicator)で破砕した。前記細胞破砕物を再度13,000×gで4℃にて15分間遠心分離し、次いで可溶性のジンセノサイドグリコシダーゼMT619の上清を得た。前記上清を分離精製し、MT619をSDS−PAGEで分析した。
実施例3−1:MT619の活性の分析方法
基質であるPNPG(p-nitrophenyl-β-D-glucopyranoside)を含む50mMリン酸ナトリウム緩衝液(pH6.0)を用いて、37℃で前記精製されたMT619の特異活性を測定した。1MのNa2CO3 0.1mlで5分間処理して反応を終了させ、405nmでp−ニトロフェノール(p-nitrophenol)の分泌を直ちに測定した。活性の1ユニット(one unit of activity)を1分当たりp−ニトロフェノール1μmolの分泌量と定義した。特異活性はタンパク質1ミリグラム(milligram)当たり1ユニットであった。タンパク質濃度はビシンコニン酸(BCA)タンパク質分析法(Pierce, Rockford, IL)を用いて、牛血清アルブミン(Sigma)のBio−Rを基準に測定し、全ての分析法を3回繰り返した。
pHが前記MT619の酵素活性に及ぼす効果を測定するために、基質として2.0mMのpNPGlc(p-nitrophenyl-D-glucopyranoside; Sigma)を用いると共に、下記の緩衝液(50mM)を用いてpHを調節した。
pH2〜10の範囲:KCl−HCl(pH2),グリシン−HCl(pH3),酢酸ナトリウム(pH4及びpH5),リン酸ナトリウム(pH6及びpH7),Tris−HCl(pH8及びpH9),グリシン−水酸化ナトリウム(pH10)
温度が前記MT619の酵素活性に及ぼす効果を測定するために、4〜65℃の様々な温度にて2.0mMのpNPGlc(p-nitrophenyl-β-Dglucopyranoside; Sigma)を用いて、10分間最適pHで50mMのリン酸カリウム緩衝液中の温度依存的な活性を分析した。
金属及び他の化学試薬がジンセノサイドグリコシダーゼMT169の活性に及ぼす影響を分析するために、MT169を37℃で30分間10mMのβ−メルカプトエタノール、CaCl2、CoCl2、CuCl2、ジチオトレイトール(DTT)、EDTA、HgCl2、KCl、MgCl2、MnCl2、NaCl、SDS又はZnCl2と共にインキュベートし、その後pNPGを基質として残存活性を測定し、化合物を含まない場合に対する百分率で活性を下記表1に示す。
前記MT619の基質特異性を分析するために、2.0mMの発色するo−ニトロフェニル(ONP)とp−ニトロフェニル(PNP)を基質として用いて、37℃で5分間測定した。1活性単位は1分当たり1μmolのo−ニトロフェノール又はp−ニトロフェノールの放出と定義した。分析に用いた基質は、pNP−α−L−アラビノフラノシド(pNP-α-L-arabinofuranoside)、pNP−β−L−アラビノピラノシド(pNP-β-L-arabinopyranoside)、pNP−α−L−D−フコピラノシド(pNP-α-L-D-fucopyranoside)、pNP−α−L−ラムノピラノシド(pNP-α-L-rhamnopyranoside)、pNP−α−D−グルコピラノシド(pNP-α-D-glucopyranoside)、pNP−α−D−マンノピラノシド(pNP-α-D-mannopyranoside)、pNP−β−D−ガラクトピラノシド(pNP-β-D-galactopyranoside)、oNP−β−D−グルコピラノシド(oNP-β-D-glucopyranoside)、oNP−β−D−フコピラノシド(oNP-β-D-fucopyranoside)、pNP−β−D−キシロピラノシド(pNP-β-D-xylopyranoside)、pNP−β−L−アラビノフラノシド(pNP-β-L-arabinofuranoside)、oNP−β−D−フコピラノシド(oNP-β-D-fucopyranoside)、oNP−α−D−ガラクトピラノシド(oNP-α-D-galactopyranoside)及びpNP−β−D−グルコピラノシド(pNP-β-D-glucopyranoside)であり、シグマから購入した。
b:pNP−β−D−グルコピラノシドに対する酵素活性を基準とする
ジンセノサイドの6位の炭素(C−6)部位に付着した糖の加水分解に対する酵素の特異性及び選択性を分析するために、ジンセノサイドRe、Rg1及びRg2を基質として用いた。
前記MT619がRg1を基質として用いてF1を生産する能力を評価するために、ミクロバクテリウム・テスタセウム由来のジンセノサイドグルコシダーゼとF1生産能を比較した。
Claims (9)
- 配列番号1で表されるアミノ酸配列で規定されるジンセノサイドグリコシダーゼ(Ginsenoside glycosidase)タンパク質と、前記タンパク質をコードする核酸を含むベクターが導入された形質転換体と、前記形質転換体の培養物とからなる群から選択される少なくとも1つを用いて、ジンセノサイドの6位の炭素の糖を特異的に加水分解することにより脱グリコシル化した形態に変換するステップを含む、マイナージンセノサイドの製造方法。
- 前記ジンセノサイドは、Rg1、Rh1、Re、Rg2及びRfからなる群から選択される少なくとも1つである、請求項1に記載の製造方法。
- 前記糖は、グルコース、Glc(1→2)Glc、又はrha(1→2)Glcである、請求項1に記載の製造方法。
- 前記マイナージンセノサイドの製造は、Rg1からF1への変換過程、Rh1からPPTへの変換過程、ReからF1への変換過程、Rg2からPPTへの変換過程、及びRfからF1への変換過程からなる群から選択される少なくとも1つの変換過程を含む、請求項1に記載の製造方法。
- 前記変換は、pH5〜8.5又は10〜50℃の温度で行われる、請求項1に記載の製造方法。
- 配列番号1で表されるアミノ酸配列で規定されるジンセノサイドグリコシダーゼ(Ginsenoside glycosidase)タンパク質と、前記タンパク質をコードする核酸を含むベクターが導入された形質転換体と、前記形質転換体の培養物とからなる群から選択される少なくとも1つを有効成分として含む、ジンセノサイドの6位の炭素の糖を特異的に加水分解することにより脱グリコシル化した形態のマイナージンセノサイドへの変換用組成物。
- 前記ジンセノサイドは、Rg1、Rh1、Re、Rg2及びRfからなる群から選択される少なくとも1つである、請求項6に記載の組成物。
- 前記糖は、グルコース、Glc(1→2)Glc、又はrha(1→2)Glcである、請求項6に記載の組成物。
- 前記マイナージンセノサイドの変換は、Rg1からF1への変換、Rh1からPPTへの変換、ReからF1への変換、Rg2からPPTへの変換、及びRfからF1への変換からなる群から選択される少なくとも1つの変換を含む、請求項6に記載の組成物。
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JPS6312300A (ja) * | 1985-07-22 | 1988-01-19 | Takeda Chem Ind Ltd | ジンセノサイド−Rdの製造法 |
JP2004519224A (ja) * | 2000-12-29 | 2004-07-02 | ▲鳳▼燮 金 | ジンセノサイド糖基を加水分解するジンセノサイドグリコシダーゼ及びその使用 |
JP2008212137A (ja) * | 2007-03-05 | 2008-09-18 | Whanin Pharm Co Ltd | 生物転換法を利用したペリヌスリンテウス菌糸体の液体培養による人参からの新規のジンセノサイド製造方法 |
US20120190063A1 (en) * | 2009-09-18 | 2012-07-26 | Dong-Shan An | Rhodanobacter Ginsenosidimutans KCTC22231T-Derived Ginsenoside Glycosidase, and Use Thereof |
US20120264167A1 (en) * | 2009-10-23 | 2012-10-18 | Korea Research Institute Of Bioscience And Biotechnology | Novel ginsenoside glycosidase derived from the genus terrabacter, and use thereof |
JP2015082970A (ja) * | 2012-02-02 | 2015-04-30 | 星野科学株式会社 | 高麗人参薬効成分の製造方法 |
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US20130084601A1 (en) * | 2010-06-14 | 2013-04-04 | Amorepacific Corporation | Novel soil microorganism, novel oxidoreductase separated from the soil microorganism, gene encoding the oxidoreductase, and method for producing aglycones using the microorganism, the oxidoreductase and the gene |
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KR101340079B1 (ko) | 2012-09-03 | 2014-01-24 | 한국과학기술원 | 테라박터 속 유래 β―글루코시다제를 이용한 PPT 타입 진세노사이드의 생물전환 |
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Patent Citations (6)
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JPS6312300A (ja) * | 1985-07-22 | 1988-01-19 | Takeda Chem Ind Ltd | ジンセノサイド−Rdの製造法 |
JP2004519224A (ja) * | 2000-12-29 | 2004-07-02 | ▲鳳▼燮 金 | ジンセノサイド糖基を加水分解するジンセノサイドグリコシダーゼ及びその使用 |
JP2008212137A (ja) * | 2007-03-05 | 2008-09-18 | Whanin Pharm Co Ltd | 生物転換法を利用したペリヌスリンテウス菌糸体の液体培養による人参からの新規のジンセノサイド製造方法 |
US20120190063A1 (en) * | 2009-09-18 | 2012-07-26 | Dong-Shan An | Rhodanobacter Ginsenosidimutans KCTC22231T-Derived Ginsenoside Glycosidase, and Use Thereof |
US20120264167A1 (en) * | 2009-10-23 | 2012-10-18 | Korea Research Institute Of Bioscience And Biotechnology | Novel ginsenoside glycosidase derived from the genus terrabacter, and use thereof |
JP2015082970A (ja) * | 2012-02-02 | 2015-04-30 | 星野科学株式会社 | 高麗人参薬効成分の製造方法 |
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JP6146753B1 (ja) | 2017-06-14 |
US9926585B2 (en) | 2018-03-27 |
KR20170073781A (ko) | 2017-06-29 |
CN106893755A (zh) | 2017-06-27 |
KR101785809B1 (ko) | 2017-10-18 |
US20170175159A1 (en) | 2017-06-22 |
EP3181695A1 (en) | 2017-06-21 |
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