JP2016530535A - 磁性を有する粒子を用いる新規診断アッセイ - Google Patents
磁性を有する粒子を用いる新規診断アッセイ Download PDFInfo
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- JP2016530535A JP2016530535A JP2016540853A JP2016540853A JP2016530535A JP 2016530535 A JP2016530535 A JP 2016530535A JP 2016540853 A JP2016540853 A JP 2016540853A JP 2016540853 A JP2016540853 A JP 2016540853A JP 2016530535 A JP2016530535 A JP 2016530535A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0036—Galactans; Derivatives thereof
- C08B37/0039—Agar; Agarose, i.e. D-galactose, 3,6-anhydro-D-galactose, methylated, sulfated, e.g. from the red algae Gelidium and Gracilaria; Agaropectin; Derivatives thereof, e.g. Sepharose, i.e. crosslinked agarose
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- 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
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- B01J20/3206—Organic carriers, supports or substrates
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Abstract
Description
a.
− 外表面(exterior surface)、孔及び該孔によって規定される接続した内表面(interior surface)を有する非磁性多孔性粒子であって、少なくとも1種のポリマーを含み、該外表面及び内表面に少なくとも1つのタイプの官能基を含む該非磁性多孔性粒子、並びに
− 表面に少なくとも1つのタイプの官能基を含む磁性粒子であって、該磁性粒子の重量当たり少なくとも95パーセントの粒子の最小直径が、該多孔性粒子の孔の平均直径より大きい該磁性粒子
を用意するステップと、
b.該非磁性多孔性粒子の該表面の該官能基を、該磁性粒子の該表面の該官能基と反応させて、共有結合を形成させて、該粒子の外側部分(outer part)に共有結合した磁性粒子が補充された粒子を得るステップと
を含む該方法に関する。
− 該粒子を、分析される少なくとも1つの分析物を含む試料と接触させるステップであって、該粒子が該分析物に親和性を有する該ステップと、
− 該粒子を、粒子に固定化されている該分析物に生体親和性を有する分子が固定化されている表面と接触させるステップと、
− 該粒子をi)磁場、ii)重力、及びiii)遠心分離の少なくとも1つに曝露し、続いて表面から非特異的結合粒子を洗い落すステップと、
− 表面に固定化されている該粒子から、検出可能なシグナルを読み取るステップと
を含む。
a.
− 外表面(exterior surface)、孔及び該孔によって規定される接続した内表面(interior surface)を有する非磁性多孔性粒子であって、少なくとも1種のポリマーを含み、該外表面及び内表面に官能基を含む該非磁性多孔性粒子、並びに
− 表面に官能基を含む磁性粒子であって、該磁性粒子の重量当たり少なくとも95パーセントの粒子の最小直径が、該多孔性粒子の孔の平均直径より大きい該磁性粒子
を用意するステップと、
b.該非磁性多孔性粒子の表面の官能基を、該磁性粒子の表面の官能基と反応させて、共有結合を形成させ、該粒子の外側部分(outer part)に共有結合した磁性粒子が補充された粒子を得るステップと
を含む該方法に関する。
− 固体磁性マイクロ粒子。これらは、頻繁に、低い磁力及び低い能力を有する。それらは、現在のところ、本明細書に開示されるプロセス及びシステムにおける使用のためには適切性に劣る。例には、Dynabeads(登録商標)(Dynal/Invitrogen Co.)及びMicromer(登録商標)M(Micromod Partikeltechnologie GmbH, Rostock, Germanyからの磁性ポリスチレン粒子)が含まれる。
− 多孔性磁性粒子。これらは、良好な磁性及び高い能力を有する。それらは、本明細書に開示されるプロセス及びシステムにおける使用のために適切である。例には、Mag Sepharose粒子(GE Healthcare Life Sciences, Biovision, Inc)、PureCube MagBeads(登録商標)(Cube Biotech)、並びに本願明細書の概説のように製造される及び2013年9月9日に出願されたSE1351038−3の優先権主張を伴う同時係属の国際出願において詳細に説明される粒子が含まれる。
− 固体磁性粒子、例えば、コバルト粒子(Turbobeads LLC, Zurich, CHからのTurboBeads(登録商標)製品範囲)及び高い磁力を有する類似物。
セファロース4B(GE Healthcare Life Sciences)を、ガラスフィルター上で蒸留水で洗浄し、吸引乾燥した。3gの乾燥ゲル粒子を2.4mlの1M水酸化ナトリウム溶液に懸濁し、エピクロルヒドリン0.45mlを室温で撹拌下で滴下添加した。温度を60℃に増大し、2時間維持した。エポキシド活性化セファロースゲルを、ガラスフィルター上で中性まで蒸留水で洗浄し、蒸留水中に50%ゲル濃度で最終的に再懸濁した。その産物は、本明細書に規定される多孔性粒子の一例を構成する、例えば、図1及び2における粒子Ppを参照されたい。
2μmから10μmのサイズにおいて、アミノ(NH2)官能性を有する市販の磁性マイクロ粒子を、これらの調査において磁性材料として使用した。これらの粒子は、本明細書に規定される磁性粒子の例である、例えば、図1及び2における磁性粒子Mpを参照されたい。
磁性粒子Micromer(登録商標)M−NH2(5μm及び10μm)を、下記のように多孔性エポキシド活性化アガロース粒子に共有結合により結合させた。
磁性粒子Micromer(登録商標)M−NH2(2μm、5μm及び10μm)を、下記のように多孔性エポキシド活性化アガロース粒子に共有結合により結合させた。
約60μlの沈降させた磁性アガロース粒子(2μm)を、1.5ml Eppendorfチューブにピペットで入れた。磁性アガロース粒子を永久磁石によってEppendorfチューブの壁に引き付け、溶液を除去し、粒子をチオール化プロテインAの1ml溶液(15mMリン酸緩衝液pH8中に1mg/ml)に再懸濁した。室温で1時間反応させ、穏やかに混合した後で、上清を、永久磁石による溶液からの粒子の分離により採取した。上清中のプロテインAの量を、280nm(A280nm)での吸光度を測定することによるUv/Vis分光法で評価した(表1を参照されたい)。
試料混合物中のヒト血清アルブミン(HSA)及び免疫グロブリンG(IgG)の存在並びにリゾチームの非存在の検出を、異なるサイズ有する磁性粒子で装飾された多孔性粒子を含む磁性粒子を用いることによって行った。磁性粒子を、異なる磁性粒子サイズで例2におけるように製造して、図3及び図4におけるような磁性粒子を製造した。2μm磁性粒子で装飾された粒子の内部空間(inner volume)を、共有結合により抗−HSAとカップリングして、抗−HSA−2μm磁性粒子を製造した。
Claims (21)
- 外表面、孔及び該孔によって規定される内表面を有する非磁性多孔性粒子を含む粒子であって、
該多孔性粒子が少なくとも1種のポリマーを含み、該粒子がその外側部分に共有結合した少なくとも1つの磁性粒子を有し、
全ての磁性粒子の重量当たり少なくとも95パーセントの粒子の最小直径が、該多孔性粒子の孔の少なくとも95パーセントの最大直径より大きく、
該少なくとも1つの磁性粒子が、1つのグループの粒子を別のグループの粒子と区別し得る特徴を構成する、粒子。 - 前記多孔性粒子は、アガロース、シリカ、セルロース、ポリビニルアルコール、ポリエチレングリコール、ポリスチレン、及びそれらの誘導体からなる群から選択される少なくとも1種の材料を含む、請求項1に記載の粒子。
- 前記多孔性粒子及び前記少なくとも1つの磁性粒子からなる群から選択される少なくとも1つは、分子相互作用に適する分子を含む、請求項1又は2に記載の粒子。
- 前記検出に適する分子は、有機分子、アミノ酸、ペプチド、タンパク質、核酸、抗原、酵素、酵素阻害剤、補因子、ホルモン、毒素、複合糖質、レクチン、及び炭水化物からなる群から選択される少なくとも1種である、請求項3に記載の粒子。
- 前記磁性粒子は、ポリマーマトリックスに埋め込まれた少なくとも1種の磁性材料の粒子を含み、該ポリマーマトリックスが官能基を含む、請求項1から4までのいずれか一項に記載の粒子。
- 請求項1から5までのいずれか一項に記載の粒子を用いてアッセイを行う方法であって、
− 該粒子を、分析される少なくとも1つの分析物を含む試料と接触させるステップであって、該粒子が該分析物に親和性を有する該ステップと、
− 該粒子を、粒子に固定化される該分析物に生体親和性を有する分子が固定化されている表面と接触させるステップと、
− 該粒子をi)磁場、ii)重力、及びiii)遠心分離の少なくとも1つに曝露し、次いで表面から非特異的結合粒子を洗い落とすステップと、
− 表面に固定化されている該粒子から、検出可能なシグナルを読み取るステップと
を含む該方法。 - 前記アッセイが、診断目的のためのインビトロアッセイである、請求項6に記載の方法。
- 前記アッセイが、粒子のサブグループの使用を伴うマルチプレックスアッセイであり、各サブグループの前記多孔性粒子が、異なるサイズの磁性粒子を保持する、請求項6に記載の方法。
- 前記アッセイが、粒子のサブグループの使用を伴うマルチプレックスアッセイであり、各サブグループの前記多孔性粒子が、異なる色、異なる色及び/又はサイズの組合せの磁性粒子を保持する、請求項6から8までのいずれか一項に記載の方法。
- 粒子の製造のための方法であって、
a.
− 少なくとも1種のポリマーを含み且つ外表面及び内表面に官能基を含む多孔性粒子、並びに、
− 表面に官能基を含む磁性粒子(Mp)であって、全ての磁性粒子の重量当たり少なくとも95パーセントの粒子の最小直径が、該多孔性粒子の孔の少なくとも95パーセントの最大直径より大きい該磁性粒子
を用意するステップと、
b.該非磁性多孔性粒子の表面の官能基を、該磁性粒子の表面の官能基と反応させて、共有結合を形成させて、該粒子の外表面部分に共有結合した磁性粒子(Mp)が補充された粒子(P)を得るステップと
を含む該方法。 - 前記多孔性粒子が、アガロース、シリカ、セルロース、ポリビニルアルコール、ポリエチレングリコール、ポリスチレン、及びそれらの誘導体からなる群から選択される材料を含む、請求項10に記載の方法。
- 前記磁性粒子が、前記非磁性多孔性粒子の密度より高い密度を有する、請求項10又は11に記載の方法。
- 前記多孔性粒子の外表面及び内表面の官能基が、−SH、−S−S−ピリジン、−COOH、−NH2、−CHO、−OH、フェノール、無水物、エポキシ、S−Au、アミド、アミノエチル、ジエチルアミノエチル、四級アミノエチル、カルボキシメチル、ホスホプロピル及びスルホプロピルからなる群から選択される、請求項10から12までのいずれか一項に記載の方法。
- 前記多孔性粒子の外表面及び内表面の官能基が、ジビニルスルホン、ベンゾキノン、イミダゾール、過ヨウ素酸塩、トリクロロ−S−トリアジン、トシラート、ジアゾニウム、イソ尿素塩、カルボジイミド、ヒドラジン、エピクロルヒドリン、グルタルアルデヒド、臭化シアン、ビスエポキシラン、カルボニルジイミダゾール、N−ヒドロキシスクシンイミド、シラン及びそれらの誘導体からなる群から選択される少なくとも1種の化合物との反応の結果である、少なくとも1つの基を含む、請求項10から13までのいずれか一項に記載の方法。
- 前記磁性粒子(Mp)上の官能基が、−SH、−S−S−ピリジン、−COOH、−NH2、−CHO、−OH、フェノール、無水物、エポキシ、S−Au、並びにアミド、アミノエチル、ジエチルアミノエチル、四級アミノエチル、カルボキシメチル、ホスホプロピル及びスルホプロピルからなる群から選択される、少なくとも1つを含む、請求項10から14までのいずれか一項に記載の方法。
- 前記磁性粒子の表面の官能基が、ジビニルスルホン、ベンゾキノン、イミダゾール、過ヨウ素酸塩、トリクロロ−S−トリアジン、トシラート、ジアゾニウム、イソ尿素塩、カルボジイミド、ヒドラジン、エピクロルヒドリン、グルタルアルデヒド、臭化シアン、ビスエポキシラン、カルボニルジイミダゾール、N−ヒドロキシスクシンイミド、シラン及びそれらの誘導体からなる群から選択される少なくとも1種の化合物との反応の結果である、少なくとも1つを含む、請求項10から15までのいずれか一項に記載の方法。
- 分子相互作用に適する分子が、多孔性粒子、磁性粒子、又は双方に導入される、請求項10から16までのいずれか一項に記載の方法。
- 前記分子相互作用に適する分子が、有機分子、タンパク質、抗原、酵素、酵素阻害剤、補因子、ホルモン、毒素、ビタミン、複合糖質、核酸、レクチン、及び炭水化物からなる群から選択される少なくとも1種である、請求項10から17までのいずれか一項に記載の方法。
- 検出に適する分子が、前記多孔性粒子及び前記磁性粒子からなる群から選択される少なくとも1つに導入される、請求項10から18までのいずれか一項に記載の方法。
- 前記検出に適する分子が、有機分子、核酸、アミノ酸、ペプチド、タンパク質及びレクチンからなる群から選択される少なくとも1種である、請求項10から19までのいずれか一項に記載の方法。
- 前記磁性粒子(Mp)が、ポリマーマトリックスに埋め込まれた少なくとも1種の磁性材料の粒子を含み、該ポリマーマトリックスが官能基を含む、請求項10から20までのいずれか一項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1351038 | 2013-09-09 | ||
SE1351038-3 | 2013-09-09 | ||
PCT/SE2014/051037 WO2015034429A1 (en) | 2013-09-09 | 2014-09-09 | New diagnostic assay using particles with magnetic properties |
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WO2022239269A1 (ja) * | 2021-05-10 | 2022-11-17 | Jnc株式会社 | 磁性粒子及びその製造方法 |
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EP3043904A1 (en) | 2016-07-20 |
CN105980046B (zh) | 2018-04-03 |
DK3043905T3 (en) | 2018-08-20 |
CA2923817A1 (en) | 2015-03-12 |
CN105792925A (zh) | 2016-07-20 |
DK3043904T3 (en) | 2018-03-26 |
EP3043905A4 (en) | 2017-07-19 |
US20160187327A1 (en) | 2016-06-30 |
CA2923817C (en) | 2021-12-28 |
CN105792925B (zh) | 2018-03-09 |
CA2923725A1 (en) | 2015-03-12 |
JP2016536003A (ja) | 2016-11-24 |
EP3311915B1 (en) | 2019-10-02 |
EP3043904A4 (en) | 2017-07-05 |
JP6438483B2 (ja) | 2018-12-12 |
WO2015034427A1 (en) | 2015-03-12 |
US20160185880A1 (en) | 2016-06-30 |
WO2015034429A1 (en) | 2015-03-12 |
EP3043904B1 (en) | 2017-12-27 |
CN105980046A (zh) | 2016-09-28 |
US10125199B2 (en) | 2018-11-13 |
JP6452704B2 (ja) | 2019-01-16 |
US9777075B2 (en) | 2017-10-03 |
EP3043905B1 (en) | 2018-06-20 |
EP3311915A1 (en) | 2018-04-25 |
EP3043905A1 (en) | 2016-07-20 |
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