JP5344511B2 - 被覆磁性粒子の調製方法 - Google Patents
被覆磁性粒子の調製方法 Download PDFInfo
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- JP5344511B2 JP5344511B2 JP2006519979A JP2006519979A JP5344511B2 JP 5344511 B2 JP5344511 B2 JP 5344511B2 JP 2006519979 A JP2006519979 A JP 2006519979A JP 2006519979 A JP2006519979 A JP 2006519979A JP 5344511 B2 JP5344511 B2 JP 5344511B2
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- diol
- polymer particles
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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Landscapes
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Description
4,4−メチレン−ビス(フェニルイソシアネート):40〜50%、
4,4−メチレン−ビス(フェニルイソシアネート)+ベンジルイソシアネート:20〜25%、
4,4−メチレン−ビス(フェニルイソシアネート)+2ベンジルイソシアネート:10%、
4,4−メチレン−ビス(フェニルイソシアネート)+3ベンジルイソシアネート:2%であってもよい。(このような反応において、前記産物は、2−異性体の一部を含む。)
前記化合物は、商標Caradate、及び、Huntsmanにより商標Hylene及びRubinateで販売されている。
スチレン1600gを10重量%水酸化ナトリウム2Lで抽出し、水で洗浄してpH7とし、ついでアルゴンを10分流した。10Lの反応容器内で、水8000gとホウ砂3.07gを80℃で加熱し、水100gを蒸発乾固させ、酸素を除去した。ついで、湯200mL中硫酸デシルナトリウム19.97gを充填し、10分間攪拌した。ついで、洗浄した後、実質的に酸素フリーのスチレンを充填し、15分間攪拌した。ついで、湯200mL中ペルオキソ2硫酸カリウム4.80gを充填した。前記混合物を80℃、アルゴン雰囲気下で13時間保持した。直径0.3μmの粒子を有するポリマー粒子の単分散懸濁液が形成された。
水8860g、DOP(ジオクタノイル過酸化物)866g、アセトン433g及びSDS 51.96gを、2段階のマントンガウリンホモジナイザーで25分間均質化した。第1段階では400kg/cm2で、第2段階では100kg/cm2とした。均質化後、乳濁液5164gを、実施例1で形成した直径0.3μmの単分散ポリスチレン粒子の種懸濁液で満たした。ポリマー粒子297.8g及び水1593gを含む種懸濁液1891gを使用した。
95%硫酸9920g及び65%硝酸3020gの混合物を10℃で冷却し、ついで、実施例2の1.0μm乾燥架橋ポリスチレン粒子を400g加えた。温度を1時間半で30℃に上昇させた。前記懸濁液を60Lの氷水で満たした。前記粒子を水及びメタノールでろ過により洗浄した。得られた粒子は、9.0重量%窒素を含有した。
FeSO4・7H2O 2579g及びMnSO4・H2O 3.2gを、粒子450g及び水3694gを含む実施例3の窒素化多孔性粒子の懸濁液4144gに加えた。前記懸濁液を室温で30分間攪拌した。25%NH3水を3285g加えた。温度を2時間で60℃に上昇させた。前記懸濁液を冷却し、前記粒子を遠心分離により水で洗浄した。精製後、前記粒子をメタノールに移した。前記粒子の分析により、330mgFe/gDS(乾燥物質)及び0.9mgMn/gDSの含有量であった。
超常磁性鉄酸化物(33重量%Fe)を含む1.0μmニトロ化及び還元により表面官能化されたスチレン−ジビニルベンゼンポリマー粒子を13.3g含むメタノール懸濁液133gを、93gのジグライム(diglyme)で5回洗浄した。ジグライム中の粒子の乾燥物質を15重量%に調整し、グリシドール(3.07g)、1,4−ブタンジオールジグリシジルエタノール(Araldite(商標)DY−026、8.06g)及びグリシジルメタクリレート(5.68g)を前記粒子に加えた。前記混合物を75℃に加熱し、20時間攪拌した。ついで、前記粒子を70gのメタノールで6回洗浄し、80gのイソプロパノールで4回洗浄した。
実施例5で調製した粒子(425g)のイソプロパノール懸濁液1806gに、メタノール(774g)、アクリル酸(514g)及び2,2’−アゾイソブチロニトリル(23.4g)を加えた。前記混合液を73〜75℃に加熱し、20時間攪拌した。ついで、前記粒子を2338gのメタノールで6回洗浄し、3018gの0.15M NaOHで一度洗浄した。粒子含有量(乾燥物質を基準とする)を12重量%に調節し、前記混合液を75℃に加熱し、3.5時間攪拌した。前記粒子を3188gの水で3回洗浄し、3188gの0.01M NaOHで5回洗浄した。
実施例6の粒子を5.0g含む懸濁液50gを、0.1M酢酸での洗浄により(3×50mL)酸性にした。ついで、酸性にした粒子(カルボン酸含有量0.5mmol/gDS)をアセトン(4×50mL)で洗浄し、磁石で濃縮した。懸濁液が35.6gとなるまで余分量のアセトンを追加した。ついで、N−ヒドロキシスクシンイミド(2.90g、25mmol)及びジイソプロピルカルボジイミド(3.16g、25mmol)を加えた。前記反応混合液を室温で5時間攪拌した。ついで、前記粒子をアセトンで洗浄した(5×50mL)。
1.実施例6のカルボン酸官能化ビーズ20mgを、1mLの0.01M NaOHに分散させた。
2.前記ビーズを磁石で分離し、上清を除去した。
3.前記ビーズを1mLの30mM2−モルホリノ−エタンスルホン酸(MES)pH6.1で3回洗浄した。
4.30mM MES(pH6.1)900μLに、1.8mgのストレプトアビジンを溶解し、前記ビーズに加えた。
5.前記ビーズ及びストレプトアビジンを室温で15分間、混合装置でインキュベートした。
6.75μLの冷蒸留水に溶解した1−エチル−3−(3−ジメチルアミノプロピル)カルボジイミド(EDC)(3mg)を加えた。
7.前記混合液を、室温で1時間、混合装置でインキュベートした。
8.前記ビーズを、0.01%(w/v)Tween20を含むリン酸緩衝生理食塩水(PBS)pH7.4で3回洗浄し、過剰なストレプトアビジン及びEDCを除去した。
9.前記ビーズを0.1%(w/v)Tween20を含むPBS(pH7.4)で再懸濁した。
ジグライム200g中の超常磁性酸化鉄(33重量%Fe)を含む1.0μmのスチレン−ジビニルベンゼンポリマー粒子(実施例4等同様にして作製)40.0gに1,4−ブタンジオールジグリシジルエーテル100g及びグリシドール100gを加えた。前記反応混合物を250rpm、90℃で20時間攪拌した。ついで、前記粒子を400mLのメタノールで5回洗浄し、400mLの脱イオン水で4回洗浄した。
工程Aで調製した粒子の水性懸濁液72g(粒子含有量10重量%)に、水酸化ナトリウムを119gゆっくり添加した。ついで、アリルグリシドールエーテルを169.2g加えた。250rpm、60℃で18時間攪拌後、前記粒子を1400mLのメタノールで5回洗浄した。
実施例17の被覆ビーズ20mgを、0.1Mリン酸ナトリウム緩衝液(pH7.4)1mLに分散させた。ビーズを磁石で分離し、上清を交換した。これを2回繰り返した。0.1Mリン酸ナトリウム緩衝液(pH7.4)900μLに、ストレプトアビジン1mgを溶解し、これを前記ビーズに加えた。ビーズ及びストレプトアビジンを混合装置で、室温で20時間インキュベートした。前記ビーズをPBS(pH7.4、0.1%BSA)で3回洗浄した。
1.1090,526,217塩基対のプラスミドDNAフラグメントをビオチン化し、PCRによりユウロピウム標識した。
2.過剰なビオチン及びユウロピウム標識を、市販のPCR浄化法により除去し、標識されたDNAを、260nmの光学密度及び時間分解蛍光で定量した。
3.ストレプトアビジン被覆ビーズ(実施例8)を、2倍に濃縮した結合緩衝液(2M NaCl、20mM Tris HCl、0.2M EDTA pH7.5)で1度洗浄した。
4.洗浄したビーズ5μgを結合緩衝液100μLに96ウエルプレートの各ウエルで再懸濁した。
5.水100μLに希釈された過剰なDNA(0.55pmolの1090bp、1.1pmolの526bp及び2.2pmolの217bp)を、前記ビーズに加え、室温で15〜30分穏やかに攪拌しながらインキュベートした。
6.前記プレートを磁石上に配置し、上清を除去した。
7.前記ビーズ−DNA複合体を洗浄緩衝液(10mM TrisHCl pH7.8、0.01% Tween20)200μLで3回洗浄した。
8.前記ビーズ−DNA複合体を、DELFIA増強(Enhancement)溶液200μLに再懸濁し、遮光し、室温で10分間攪拌しながらインキュベートした。
9.前記プレートを磁石上に配置し、前記増強溶液をFluorNunc 96ウエルプレートに移し、ユウロピウムのシグナルを時間分解蛍光により測定し(Wallac Victor plate reader)、counts/second(cps)を得た。
10.ビーズに結合したDNAを、ビーズに結合しているDNAが0.55、1.1及び2.2pmolで添加されたcpsの割合から計算された。
実施例21の被覆ビーズ20mgを0.1Mホウ酸緩衝液(pH9.0)1mLに分散させた。ビーズを磁石で分離し、上清を交換した。これを2回繰り返した。マウスIgG1抗ヒトαフェトプロテイン1mgを、0.1Mホウ酸緩衝液(pH9.0)900μLに溶解し、これを前記ビーズに加えた。ビーズ及び抗体を、混合装置で、室温で20時間インキュベートした。前記ビーズをPBS(pH 7.4、0.1% BSA)で3回洗浄した。
実施例5で調製した粒子(2.5g)のイソプロパノール懸濁液15.87gに、アクリル酸(1.84g)、アクリルアミド(1.79g)、メタノール(5.95g)及び2,2’−アゾイソブチロニトリル(0.28g)を加えた。前記混合物を75℃で加熱し、20時間攪拌した。ついで、前記粒子を20gのイソプロパノールで4回洗浄し、25gの0.15M NaOHで4回洗浄した。
実施例5で調製した粒子(1g)の水懸濁液8.44gに、アクリル酸(0.37g)、アリルグリシジルエーテル(1.34g)、ジメチルスルホキシド(0.91g)及び2,2’アゾイソブチロニトリル(0.06g)を加えた。前記混合物を75℃で加熱し、20時間攪拌した。ついで、前記粒子を10gのイソプロパノールで4回洗浄し、10gの0.15M NaOHで4回洗浄した。
実施例30の粒子4gのアセトン懸濁液17.1gに、トシルクロライド(16g)及びピリジン(7.85g)を加えた。前記混合物を、25℃で17時間攪拌した。ついで、前記粒子を50mLのアセトンで3回洗浄し、水とアセトンの混合液(アセトン80重量%)50mLで一度洗浄し、水とアセトンの混合液(アセトン60重量%)50mLで一度洗浄し、水とアセトンの混合液(アセトン40重量%)50mLで一度洗浄し、50mLの水で3回洗浄した。
実施例22の免疫グロブリン被覆ビーズ50μgを、臍帯血希釈液100μLに加え、15分間インキュベートしてαフェトプロテインを結合させた。過剰な臍帯血は、洗浄して除去した。この複合体に、Eu3+で標識した第2の検出マウスIgG抗ヒトαフェトプロテインを加えた。インキュベーションし、過剰な検出抗体を除去したあと、標識した抗体の量を時間分解蛍光分光法で検出した。既知のαフェトプロテインで臍帯血の希釈標準曲線では、濃度増加に伴いシグナルが増加した。この標準曲線の使用により、試料中のαフェトプロテインの量を測定した。
実施例22と同様に被覆したビーズではあるが、マウスIgG抗−ヒトD−dimerを付した被覆ビーズを使用し、ヒト保存プラズマ試料中のミオグロブリンの量をLiaison免疫測定装置で分析した。ビーズ及び試料(10μL)を10分間インキュベートし、過剰な試料は洗浄して除去した。アクリジニウムオレンジエステルを共役させた検出抗体を加えた。10分間のインキュベーション後過剰な検出抗体を洗浄して除去し、前記化学発光シグナルを生じさせ、Liaison装置の発光リーダーで検出した。
実施例19と同様にストレプトアビジンで被覆したビーズを使用し、ヒトEDTAプラズマ試料に於ける無傷PTHの含量をLiaison免疫測定装置で分析した。150μLのEDTAプラズマを、無傷PTHに対するビオチン化ポリクロナールヤギ抗体、及び、同様に得られる免疫複合体に対するアクリジニウムエステル接合ポリクロナールヤギ抗体とインキュベーションした。ストレプトアビジンで被覆したビーズを、前記免疫複合体に加えてインキュベーションし、前記ビオチンを固定化ストレプトアビジンに結合させた。前記ビーズを洗浄し、化学発光シグナルを生じさせ、Liaison装置の発光リーダーで検出した。
1.ストレプトアビジンビーズ(実施例19)5μgを、DELFIAアッセイ緩衝液で一度洗浄し、ユウロピウム3+で標識した過剰のビオチン抗体と、96ウエルプレート中で混合した。
2.室温で混合物のインキュベーションを20分間行い、前記抗体を前記ビーズに結合させた。
3.前記プレートを磁石上に配置し、上清を除去した。
4.前記ビーズ−抗体複合体を、200μLのDELFIA洗浄緩衝液で3回洗浄した。
5.前記ビーズ−抗体複合体をDELFIA Enhancement溶液200μLに再懸濁し、遮光し、室温で10分間攪拌しながらインキュベートした。
6.前記プレートを磁石上に配置し、前記増強溶液をFluorNunc96ウエルプレートに移し、前記ユウロピウムシグナルを時間分解蛍光(Wallac Victor plate reader)により測定し、一秒あたりの総数(cps)を得た。
7.前記ビーズに結合する抗体量を、前記ビーズに結合するcpsの割合から計算した。
ビーズの結合能は、約8.0μgビオチン抗体/mgビーズであった。
実施例41、42、11、15及び30のビーズを使用し、コンアルブミン、大豆トリプシンインヒビター、アルコールデヒドロゲナーゼ、シトクロムC及びジアミン・オキシダーゼ又はSW480細胞からの細胞溶解物を含むタンパク質を分別した。1mgのビーズを予め洗浄し、RPC吸着緩衝液(Bruker Daltonics又は別の選択肢として50mMリン酸ナトリウム緩衝液、1Mリン酸アンモニウム塩、0.1%トリフルオロ酢酸)10μLに再懸濁し、25μgのタンパク質混合物又は細胞溶解物と1分間インキュベーションした。吸着後、前記ビーズを洗浄緩衝液(Bruker Daltonicsから得るか、又は50mMリン酸ナトリウム緩衝液、1Mリン酸アンモニウム塩、0.1%トリフルオロ酢酸)で3回洗浄し、ついで、アセトニトリルの増加濃度勾配(0、15、30、40及び50%)の脱着緩衝液を使用し、画分中のタンパク質を脱着した。
実施例44のビーズを使用し、コンアルブミン、大豆トリプシンインヒビター、アルコールデヒドロゲナーゼ、シトクロムC及びジアミン・オキシダーゼを含むタンパク質混合物を分別した。1mgのビーズを予め洗浄し、吸着緩衝液(50mMリン酸ナトリウム緩衝液、pH5.8、1Mリン酸アンモニウム塩)に再懸濁し、25μgのタンパク質混合物と1分間インキュベーションした。吸着後、前記ビーズを適当な洗浄緩衝液(50mMリン酸ナトリウム緩衝液、1Mリン酸アンモニウム塩)で3回洗浄し、ついで、硫酸アンモニウムの減少濃度勾配(0.8、0.6、0.4、0.2及び0.0M)の脱着緩衝液を使用し、画分中のタンパク質を脱着した。
Claims (25)
- 超常磁性結晶を含む被覆ポリマー粒子の調製方法であって、超常磁性結晶を含む直径0.5〜1.8μmの多孔性表面官能化ポリマー粒子を、少なくとも1つのポリイソシアネート及び少なくとも1つのジオールと反応させることを含む方法。
- 少なくとも2つのジオールを使用する請求項1記載の方法。
- 前記ジオールが、ポリエチレングリコール及び式HO((CH2)mO)nH(nは、1から15の整数であり、mは2から6の整数である)のジオールからなる群から選択される請求項2記載の方法。
- 前記ジオールが、ジエチレングリコール及びテトラエチレングリコールである請求項3記載の方法。
- 前記ジオールの1つが、ポリエチレングリコールである請求項2又は3記載の方法。
- 前記ポリイソシアネートが、4,4−メチレンビス(フェニルイソシアネート)、又は、CH2−フェニレンイソシアネート残基を備えた4,4−メチレンビス(フェニルイソシアネート)を含むポリイソシアネートである請求項1から5のいずれかに記載の方法。
- 前記ポリイソシアネートが、ジイソシアネートである請求項1から5のいずれかに記載の方法。
- 前記粒子を、第1段階において、ポリイソシアネート及び少なくとも1つのジオールの混合物であって、前記ジオールと比較して前記ポリイソシアネートがモル過剰な混合物と反応させ、その後、第2段階において、少なくとも1つのジオールと反応させる請求項1から7のいずれかに記載の方法。
- 前記反応の第1段階で2つのジオールを使用し、第2段階で1又は2つのジオールを使用する請求項8記載の方法。
- ジエチレングリコール及びテトラエチレングリコールを、前記反応の両段階で使用する請求項9記載の方法。
- 前記粒子を、第1段階において、ジオール不存在下でポリイソシアネートと反応させ、第2段階において少なくともひとつのジオールと反応させる請求項1から7のいずれかに記載の方法。
- 1つのジオールを使用し、前記ジオールがポリエチレングリコールである請求項11記載の方法。
- 前記ポリマー粒子が、ビニル系ポリマーの組合せから形成される、請求項1から12のいずれか一項に記載の方法。
- 前記ポリマー粒子が、スチレン、アクリレート及び/又はメタクリレートの組合せから形成される、請求項13記載の方法。
- 前記粒子をポリマー架橋剤でも反応させる請求項1から14のいずれか一項に記載の方法。
- 前記架橋剤が、ジビニルベンゼンである請求項15記載の方法。
- 前記粒子が、アミン官能化されている請求項1から16のいずれか一項に記載の方法。
- 前記多孔性表面官能化ポリマー粒子が、硝酸で処理され、かつ、還元されたスチレンジビニルベンゼンポリマー粒子である請求項1から17のいずれか一項に記載の方法。
- 前記ポリマー粒子の直径が、0.5〜1.2μmの間である請求項1から18のいずれか一項に記載の方法。
- 前記ポリマー粒子の直径が、1μmである請求項19記載の方法。
- 前記被覆粒子を、その後トシル化する請求項1から20のいずれかに記載の方法。
- 前記被覆反応後、前記粒子に薬剤粒子、レポーター残基又はリガンドをカップリングさせる請求項1から21のいずれか一項に記載の方法。
- 前記リガンドが、モノクロナール抗体、ポリクロナール抗体、抗体フラグメント、核酸、オリゴヌクレオチド、タンパク質、オリゴペプチド、多糖、糖、ペプチド、核酸分子をコードするペプチド、抗原又は薬剤である請求項22記載の方法。
- 前記リガンドが、ストレプトアビジンである請求項23記載の方法。
- 請求項1から12のいずれかに記載の方法により得られる粒子。
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DE602004010525D1 (de) | 2008-01-17 |
AU2010214744B2 (en) | 2012-06-21 |
ATE380343T1 (de) | 2007-12-15 |
US20070098639A1 (en) | 2007-05-03 |
JP2007527454A (ja) | 2007-09-27 |
US6986913B2 (en) | 2006-01-17 |
US20050147822A1 (en) | 2005-07-07 |
US8038987B2 (en) | 2011-10-18 |
CN102746529A (zh) | 2012-10-24 |
NO20060406L (no) | 2006-03-27 |
AU2004264038A1 (en) | 2005-02-17 |
CA2532711A1 (en) | 2005-02-17 |
EP1649284A1 (en) | 2006-04-26 |
CN1849512B (zh) | 2012-08-22 |
EP1649284B1 (en) | 2007-12-05 |
US20050014001A1 (en) | 2005-01-20 |
US7160707B2 (en) | 2007-01-09 |
CN1849512A (zh) | 2006-10-18 |
CN102746529B (zh) | 2015-11-18 |
NO341653B1 (no) | 2017-12-18 |
DE602004010525T2 (de) | 2008-11-27 |
WO2005015216A1 (en) | 2005-02-17 |
AU2004264038B2 (en) | 2010-09-23 |
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