JP6169885B2 - 精製装置及び精製方法 - Google Patents
精製装置及び精製方法 Download PDFInfo
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- JP6169885B2 JP6169885B2 JP2013097596A JP2013097596A JP6169885B2 JP 6169885 B2 JP6169885 B2 JP 6169885B2 JP 2013097596 A JP2013097596 A JP 2013097596A JP 2013097596 A JP2013097596 A JP 2013097596A JP 6169885 B2 JP6169885 B2 JP 6169885B2
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- 102000004169 proteins and genes Human genes 0.000 claims description 30
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
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- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 description 3
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- NQTADLQHYWFPDB-UHFFFAOYSA-N N-Hydroxysuccinimide Chemical compound ON1C(=O)CCC1=O NQTADLQHYWFPDB-UHFFFAOYSA-N 0.000 description 2
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- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
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- ASUDFOJKTJLAIK-UHFFFAOYSA-N 2-methoxyethanamine Chemical compound COCCN ASUDFOJKTJLAIK-UHFFFAOYSA-N 0.000 description 1
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- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 229960000789 guanidine hydrochloride Drugs 0.000 description 1
- PJJJBBJSCAKJQF-UHFFFAOYSA-N guanidinium chloride Chemical compound [Cl-].NC(N)=[NH2+] PJJJBBJSCAKJQF-UHFFFAOYSA-N 0.000 description 1
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- 238000001840 matrix-assisted laser desorption--ionisation time-of-flight mass spectrometry Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
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- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
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Images
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/38—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving specific interaction not covered by one or more of groups B01D15/265 - B01D15/36
- B01D15/3804—Affinity chromatography
- B01D15/3809—Affinity chromatography of the antigen-antibody type, e.g. protein A, G, L chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/38—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving specific interaction not covered by one or more of groups B01D15/265 - B01D15/36
- B01D15/3861—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving specific interaction not covered by one or more of groups B01D15/265 - B01D15/36 using an external stimulus
- B01D15/3876—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving specific interaction not covered by one or more of groups B01D15/265 - B01D15/36 using an external stimulus modifying the temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/286—Phases chemically bonded to a substrate, e.g. to silica or to polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/3272—Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3425—Regenerating or reactivating of sorbents or filter aids comprising organic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
- C07K1/16—Extraction; Separation; Purification by chromatography
- C07K1/22—Affinity chromatography or related techniques based upon selective absorption processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/58—Use in a single column
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- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Medicinal Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Peptides Or Proteins (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Description
本発明は、担体と、担体に結合した温度応答性ポリアミノ酸と、温度応答性ポリアミノ酸に結合した、標的物質に特異的に結合する結合性物質とを含む充填剤を充填したカラムを備える精製装置に関する。
本発明は、結合工程、洗浄工程、分離工程、及び溶出工程を含む標的物質の精製方法にも関する。
水溶性カルボジイミド(WSC)(290mg)、N−ヒドロキシスクシンイミド(NHS)(170mg)、及び吉草酸(130μl)を、ガラス容器に入れた蒸留水又はPBS(pH5.8)(4ml)に溶解させた。得られた溶液を4℃に冷却し、ポリリシン(140mg)を加え、一晩反応させた(37℃で2時間反応させてもよい)。反応液を透析膜(cut−off分子量2000、Spectra/Pore製)を用いて、室温で純水中、24時間撹拌して未反応物を除去し、単離・精製した。
セパラブルフラスコ(スターラー、温度計)にN,N−ジメチルホルムアミド(DMF)(34g)を入れ、ポリスクシンイミド(PSI)(9.7g、0.1mol)を溶解させた。ドデシルアミン(6.5g、0.035mol)及び2−メトキシエチルアミン(4.9g、0.065mol)を上記溶液に添加し、70℃で6時間反応させた。反応液を大量のアセトニトリルに入れ、フィルターを用いて沈殿物を回収した。回収した沈殿物(回収率92%、19.4g)を60℃で24時間乾燥した。
結合性物質のN末端がシステイン(Cys)の場合、ポリアミノ酸のC末端にチオールを付加しておくことにより、結合性物質とポリアミノ酸とを結合させることができる(図6)。ポリアミノ酸のC末端チオエステルと結合性物質のN末端システインとの反応によってふたつの物質を結合させる。システインの側鎖のチオール基がチオエステル基のカルボニル炭素に選択的に反応し(化学選択的反応)、チオール交換反応により、チオエステル結合初期中間体が生成する。この中間体は、自発的に分子内転位して(自然転移)、連結部位に天然アミド結合を与え、一方、システイン側鎖チオールを再生させる。結合後、ラネーニッケルを使って生成物の上記チオール基を選択的に脱硫(選択的脱硫)を行うと、天然の標的配列が生成する。
[試薬の調製]
(1)ストック溶液50ml:
(a)0.1M Na2HPO4(リン酸水素二ナトリウム)又はNaH2PO4(リン酸二水素ナトリウム)(1.42g、10mmol)
(b)6M GuHCl(グアニジン塩酸塩)(28.7g、300mmol)
(a)、(b)の順番で溶媒へ溶かす。4℃で数ヶ月保存する。GuHClはペプチド反応体を可溶化するために使用する。Na2HPO4又はNaH2PO4はpHを6.8〜7に中和するために使用する。
シンチレーションバイアルに下記溶質を入れ、フィルター処理(0.2μmシリンジフィルター)したストック溶液(5ml)を添加する。
50mM MPAA(42.1g、0.26mmol)
(MPAA:4−メルカプトフェニル酢酸(Sigma-Aldrich, Cat. #:653152))
20mM TCEP(HCl代用可)(28.7g、0.1mmol)
(TECP:トリス(2−カルボキシエチル)ホスフィン塩酸塩(Sigma-Aldrich,Cat. #:C4706))
2M NaOH又は1M HClを用いてpH7.1に合わせる。
(1)ペプチド(例えばポリアミノ酸)−チオエステル及びCys−ペプチド(例えばプロテインAタンパク)を正確に計りチューブへ入れた。上記、C末端へのチオエステルの付加及びN末端へのCys付加の方法は別に記載する。NCL buffer(5ml)に対して各ペプチドを1〜5mM使用する。1500Da以下のペプチドの場合は3mMで約5mgである。
目的のタンパクのN末端がシステインでない場合、次の方法で目的タンパクのN末端にシステインを付加することが可能である。
ポリアミノ酸の配列をコードしたDNAをpTXB1ベクターのマルチクローニングサイト(例:Ndel−SalI又はSpel)に挿入する。挿入したpTXB1ベクターをE.Coli Strain ER2566に組み込み、培養することでC末端にインテインとキチン結合ドメイン(CBD)から構成されるタグが融合したポリアミノ酸が産生する。産生したポリアミノ酸をキチンビーズに結合させ、チオール試薬(DTT又は2−メルカプトエタンスルホン酸)により、C末端にチオエステルが付加されたポリアミノ酸をビーズから切断することができ、C末端チオエステル付加ポリアミノ酸を回収することができる。
温度応答性ポリアミノ酸は、他のリガンドタンパクと同等に担体へ固定することが可能である。ここでは、担体への固定の一例を挙げるが、この他の固定化の方法も実施可能である。
(1)カラムの準備
カラムに気泡を入れないように注意しながら、シリンジを接続し、1mM HCl(5ml)を、流速1滴/秒(又は0.2〜1ml/min)で送液した。
リガンド溶液(1ml)を、流速1滴/秒(又は0.2〜1ml/min)で送液し、カラム出口を付属のストッププラグで密閉し、室温で15〜30分間、又は4℃で4時間放置した。カップリングバッファー(3ml)を、流速1滴/秒(又は0.2〜1ml/min)で送液した。
ブロッキングバッファー(6ml)を流速1滴/秒(又は1〜2ml/min)で送液した。洗浄バッファー(6ml)を流速1滴/秒(又は1〜2ml/min)で送液した。ブロッキングバッファー(6ml)を流速1滴/秒(又は1〜2ml/min)で送液し、室温で15〜30分間、又は4℃で4時間放置した。
洗浄バッファー(6ml)を流速1滴/秒(又は1〜2ml/min)で送液した。ブロッキングバッファー(6ml)を流速1滴/秒(又は1〜2ml/min)で送液した。洗浄バッファー(6ml)を流速1滴/秒(又は1〜2ml/min)で送液した。平衡化バッファーを流速1滴/秒(又は1〜2ml/min)で送液し、 リガンド固定カラムの作製を完了した。
上記で作成した温度応答性特異的吸脱着カラムに、温度を20℃以下とした培養回収液を流し、抗体タンパクをカラムに吸着させた。その後、37℃に加温した緩衝液(20mM リン酸塩、pH7.0)をカラムに流し、抗体タンパクを溶出した。
(1)温度応答性ポリリシンの調製
温度応答性ポリリシンは以下の手順に従って調製した。1−エチル−3−カルボジイミド(WSC)(290mg)、N−ヒドロキシスクシンイミド(NHS)(170mg)、及び吉草酸(130mg)を純水(4ml)に溶解させ、この溶液を4℃に冷却、撹拌しながらεポリリシン(種々の分子量が混在)(140mg)を加えた。常温で2時間撹拌した後、透析膜を用いてさらに24時間撹拌して未反応低分子物を除去した。透析膜の種類により、3.5kDa以上の分子量を持つ温度応答性ポリリシン、10kDa以上の分子量を持つ温度応答性ポリリシン、20kDa以上の分子量を持つ温度応答性ポリリシンの3種類を調製した。
上記調製した3種類の温度応答性ポリリシンそれぞれを、表面にアミノ基処理を施している樹脂プレート(図8)上に以下の手順に従って共有結合させた。グルタルアルデヒドが2%となるように炭酸緩衝液で希釈した。プレートの各ウェルに150μlずつ加え、37℃で2時間反応させた。各ウェルを純水で3回洗浄した後、温度応答性ポリリシンを各ウェルに100μlずつ加え、2時間反応させた。その後、PBS(リン酸緩衝液)で各ウェルを3回洗浄した。
上記、温度応答性ポリリシンが共有結合しているプレートに2%グルタルアルデヒドを加え、2時間反応させた。純水で洗浄した後、プロテインAを各ウェルに100μlずつ加えて、2時間反応させた。その後、PBS(リン酸緩衝液)で各ウェルを3回洗浄した。
上記で調製した温度制御型プロテインA材料を用い、以下の手順に従って、温度による抗体吸脱着評価を行った。
Claims (7)
- カラムと、当該カラムに充填された充填剤とを備える、標的物質の精製装置であって、 前記充填剤が、担体と、当該担体に結合した温度応答性ポリアミノ酸と、当該温度応答性ポリアミノ酸に結合した、標的物質に特異的に結合する結合性物質とを含み、
前記温度応答性ポリアミノ酸が3〜16kDaのポリリシンであり、前記結合性物質がプロテインAである、精製装置。 - 前記温度応答性ポリアミノ酸が、前記結合性物質に前記標的物質が結合できるような立体構造と、前記結合性物質に結合した前記標的物質を分離させるような立体構造との間で構造変化し、前記構造変化が0〜60℃の範囲で起こる、請求項1に記載の精製装置。
- 前記温度応答性ポリアミノ酸の温度を0〜60℃の範囲で変化させる温度調節手段を更に備える、請求項1に記載の精製装置。
- 標的物質の精製方法であって、
担体と、当該担体に結合した温度応答性ポリアミノ酸と、当該温度応答性ポリアミノ酸に結合した、標的物質に特異的に結合する結合性物質とを含む充填剤を充填したカラムに、前記標的物質と不純物とを含む溶液を通し、前記標的物質を前記結合性物質に結合させる結合工程;
前記結合性物質に結合した前記標的物質を分離させることなく、不純物を洗浄する洗浄工程;
不純物を洗浄した後、前記温度応答性ポリアミノ酸に温度変化を与え、前記結合性物質に結合した前記標的物質を分離させる分離工程;及び
分離した前記標的物質を溶出する溶出工程;
を含み、
前記温度応答性ポリアミノ酸が3〜16kDaのポリリシンであり、前記結合性物質がプロテインAである、精製方法。 - 前記温度応答性ポリアミノ酸が、前記結合性物質に前記標的物質が結合できるような立体構造と、前記結合性物質に結合した前記標的物質を分離させるような立体構造との間で構造変化し、前記構造変化が0〜60℃の範囲で起こる、請求項4に記載の精製方法。
- 前記分離工程を0〜60℃で行う、請求項4に記載の精製方法。
- 前記溶出工程をpH5〜9で行う、請求項4に記載の精製方法。
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