JP5977921B2 - 核酸を精製することを目的とした装置、システムおよび方法 - Google Patents
核酸を精製することを目的とした装置、システムおよび方法 Download PDFInfo
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Description
図2Aおよび2Bを参照し、本発明に従った精製および検出を実践するためのプロトコルを以下に提供する。
1.ガラスフリットをホルダーに挿入する(本発明の4つの異なる多孔性:小孔径、中孔径、大孔径および特大孔径のうちの1つ)。ハウジングを緊止する。
2.サンプル500μL(104コピー/mL)と6Mグアニジン500μL(pH6.5)を混合する。
3.1mLシリンジを用いて流量100μL/分で混合液(1mL)をフリットに通過させる。5mLシリンジを用い、手作業で空気をフリットに通過させてサンプルをパージする。
4.1mLシリンジを用いて、1mL/分の流量で70%エタノール1mL(EtOH)を通過させて結合した核酸を洗う。5mLシリンジを用い、手作業で空気をフリットに通過させてEtOHをパージする。
5.1mLシリンジを用いて、バッファーが出口の配管から見え始めるまで、100μL/分で溶離バッファー(10mMトリス、pH8.0)をフリットホルダーに慎重に通過させる。
6.ヒートブロックをフリットホルダーの下に置き、70℃で3分間加熱する。
7.3分後、溶離バッファーをフリットホルダーに通過させ続ける。PCR分析用の分画を捕集する(50μL〜100μL)。
8.フリットホルダーに10%漂白剤(希釈後1週間以上経過していない)1mL、10mM Tris−HCl(pH8.0)5mLおよび水5mLでフリットホルダーを洗い流す。フリットを交換する。
図3を参照し、本発明に従って精製および検出を実践するためのプロトコルを以下に提供する。
1.バイアルAに入った6Mグアニジン500μLにサンプル500μLを加える。ボルテックスを用いて混合する。
2.包埋されたフリットを有する1.2mLのピペットチップを電子ピペッター(ギルソン コンセプト)に着接する。
3.電子ピペッターのスピードを1(最低スピード)に設定する。バイアルAのサンプル混合物を1mL吸引する。サンプル混合物ボーラスをフリットに完全に通過させる。サンプル混合物ボーラスは速やかにフリットの上部に定着するであろう。
4.サンプルをバイアルAに再度注入する。サンプルボーラス混合物は完全にバイアルに再排出されるであろう。
5.手順3および4を4回繰り返す。
6.電子ピペッターのスピードを5(最高スピード)に設定する。バイアルBに入った70%エタノール1mLを吸引および分注してフリットに結合した核酸を洗う。4回繰り返す。
7.チップをエタノール溶液上に配置して痕跡量のエタノールを除去する。空気を5回吸引および排出してフリットを乾燥させる。
8.10mM Tris−HCl(pH8.0)100μLを収容するバイアルCを70℃に設定したヒートブロック内に留置する。5分間加熱する。
9.電子ピペッターのスピードを1に設定する。溶離バッファーの吸引とバイアルCへの再注入を5回実施して、フリットから核酸を除去する。
本発明の材料および方法を用いて全血および喀痰中のBacillus anthracis(Ba)を処理した、こうしたプロトコルを用いた2つの実験の結果を図6および7に示す。
表1
ウイルス性ウマ脳炎(VEE)
ワクシニアウイルス
Y.pestis
B.anthracis
アデノウイルス
S.pyogenes
C.pneumoniae
インフルエンザA
インフルエンザB
アデノウイルス+S.pyogenesの混合物
インフルエンザAおよびアデノウイルスの混合物
表2
水/TE(10mM Tris−HC1、1.0mM EDTAバッファー)
スワブ抽出物
喀痰
鼻腔洗浄液
全血
本発明は、先行技術を上回るいくつかの利点を提供する:1)流体を移動させるための遠心分離または高圧を必要としない単純化された方法および装置、2)流動を完全な分析システム内に一体化するためのモジュラー装置、3)低い流体抵抗を維持しながら複雑なサンプルを処理するための大孔径、4)流体が双方向に移動できることによる高い抽出および溶離効率、5)他の支持構造の必要性を取り除く剛性、および6)連続サンプルに対して装置を再利用することを可能とする耐久性。本明細書には多様な具体的実施形態および実施例が記載されているが、当業者は本開示の趣旨または範囲から離れることなく本発明の多くの異なる実践を達成できることを理解するであろう。たとえば、ガラスフリットの代わりに核酸に親和性のある他の材料を使用することも可能であり、またガラスフリットを修飾してグアニジンなどのカオトロープ塩を用いることなく核酸の誘因を改善することもできる。ガラスフリットは微生物および毒素を抽出する固定化抗体を含有することもできる。さらに他の変法が当業者に明らかとなるであろう。
Claims (2)
- 核酸、カオトロピック剤および異物を含有する混合物より該核酸を分離するための方法であって:中空チャンバーの内部容積を通過して前記混合物を流動させることを含み;前記中空チャンバーがその中に前記核酸と結合する少なくとも1つの焼結ガラスフリットを配置され、前記異物から前記核酸をほぼ分離するために有効な条件の下で前記混合物が前記焼結ガラスフリットを通過して流れるよう前記焼結ガラスフリットが前記中空チャンバー内に配置され、前記中空チャンバーの中には前記少なくとも1つの焼結ガラスフリット以外には前記核酸と結合する部材は存在せず、
前記混合物が40ミクロン〜60ミクロン孔径の第1の焼結ガラスフリットを通過して前記流動をすることにより第1のろ過混合物が生成し、且つ、前記第1のろ過混合物から前記核酸を分離するために有効な条件の下で10ミクロン〜15ミクロン孔径の第2の焼結ガラスフリットを通過して前記の第1のろ過混合物を流動させることをさらに含む、前記方法。 - 前記核酸が微生物DNAおよびRNAを含む、請求項1に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/933,113 US7759112B2 (en) | 2007-10-31 | 2007-10-31 | Apparatus, system, and method for purifying nucleic acids |
US11/933,113 | 2007-10-31 | ||
PCT/US2008/056482 WO2009058414A1 (en) | 2007-10-31 | 2008-03-11 | Apparatus, system, and method for purifying nucleic acids |
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JP2011505118A JP2011505118A (ja) | 2011-02-24 |
JP2011505118A5 JP2011505118A5 (ja) | 2012-11-29 |
JP5977921B2 true JP5977921B2 (ja) | 2016-08-24 |
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JP2010531085A Active JP5318110B2 (ja) | 2007-10-31 | 2008-06-25 | サンプル調製装置 |
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US (4) | US7759112B2 (ja) |
EP (2) | EP2215103B1 (ja) |
JP (2) | JP5977921B2 (ja) |
CN (2) | CN101883776B (ja) |
CA (2) | CA2703950C (ja) |
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JP2011502251A (ja) | 2011-01-20 |
US7759112B2 (en) | 2010-07-20 |
US20100240882A1 (en) | 2010-09-23 |
CA2703950A1 (en) | 2009-05-07 |
US8236501B2 (en) | 2012-08-07 |
CN101883776A (zh) | 2010-11-10 |
EP2217344A4 (en) | 2016-03-09 |
EP2215103B1 (en) | 2019-08-07 |
WO2009058432A1 (en) | 2009-05-07 |
EP2215103A1 (en) | 2010-08-11 |
EP2215103A4 (en) | 2014-07-23 |
CA2704771A1 (en) | 2009-05-07 |
US20100240123A1 (en) | 2010-09-23 |
CA2704771C (en) | 2017-12-12 |
HK1150166A1 (en) | 2011-11-04 |
WO2009058414A1 (en) | 2009-05-07 |
CA2703950C (en) | 2018-06-12 |
JP2011505118A (ja) | 2011-02-24 |
EP2217344B1 (en) | 2023-01-04 |
CN101883776B (zh) | 2014-04-02 |
CN101883619B (zh) | 2013-08-07 |
EP2217344A1 (en) | 2010-08-18 |
US20120283423A1 (en) | 2012-11-08 |
US20090107927A1 (en) | 2009-04-30 |
US8236553B2 (en) | 2012-08-07 |
JP5318110B2 (ja) | 2013-10-16 |
CN101883619A (zh) | 2010-11-10 |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |