JP5127839B2 - 生物サンプルの収集及び誘発放出用デバイス - Google Patents
生物サンプルの収集及び誘発放出用デバイス Download PDFInfo
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Description
少なくとも一つの開放端を有する容器、
前記少なくとも一つの開放端中に、又は該開放端上に適合する閉鎖部、
前記閉鎖部に接続される保持要素、及び
前記生物サンプルが堆積される固体マトリックスを含み、
前記固体マトリックスの材料が、少なくとも一つのカオトロピック物質、及び必要に応じて、少なくとも一つの高イオン強度溶液の存在下で、該マトリックスの環境の少なくとも一つの物理化学的性質が変化することによって、前記生物サンプル中に含まれる生体分子を実質的に分解させることなく、少なくとも部分的に、液体に転移可能であるか、又は、溶解可能であることを特徴とする、システムによってなされる。好ましくは、固体マトリックスは、前記生物サンプルの直接収集のために使用され得る。
少なくとも一つの開放端を有する容器、
前記少なくとも一つの開放端中に、又は該開放端上に適合する閉鎖部、
前記閉鎖部に接続される保持要素、
前記生物サンプルが堆積される固体マトリックス、及び
少なくとも一つの処理剤を含み、
前記固体マトリックスの材料は、好ましくは、少なくとも一つのカオトロピック物質、及び必要に応じて少なくとも一つの高イオン強度溶液の存在下に、前記マトリックスの環境の少なくとも一つの物理化学的性質を変えることによって、前記生物サンプルに含まれる生体分子を実質的に分解させることなく、液体もしくは溶解状態に少なくとも部分的に転移可能であることを特徴とする、システムも提供される。
更なる詳細は前述されている。
図面の簡単な説明
図1は、閉鎖される保持要素及び固体マトリックスを含む、種々の形状:
a)円形頭部;
b)楕円形頭部;
c)球根状頭部;
d)紙片;
e)乳頭状頭部;
f)液体又は固体を含む中空ロッドを備える楕円形頭部;
g)ロッド及び固体マトリックスを貫通する閉鎖回路つき;
のロッド様ユニットを示す。
図2は、固体マトリックスに開放する中空ロッド形状を持つ保持要素を含む、種々の形態;
a)基本構造;
b)中空ロッドを貫流する流体を有する基本構造;
のロッド様ユニットを示す。
カオトロピック溶液を利用した、可溶性頬内スワブからのDNA抽出
綿球形状の酢酸セルロース線維を、ヒトのドナーから頬内スワブを採取するのに用いた。綿球を、二つの等しい大きさの小片(A及びB)に切断し、異なる手順を用いてDNAを抽出した。
酢酸セルロース綿球のA部分は、800μlのAVL緩衝液(QIAGEN製のグアニジニウム塩を含む高塩緩衝液)中に穏やかに攪拌しながら室温で5分間溶解させた。この縣濁液560μlを、2mlのマイクロ遠心管に移し、この縣濁液を含む管に560μlのエタノールを加えた。混合は、渦巻き攪拌によって実行し、サンプルを、膜を備えたカラムに移した(QIAGEN製のQIAamp Mini Spinカラム)。カラムを、8,000rpmで1分間遠心し、核酸を膜に結合させた。カラムを、第1回目、500μlのAW1緩衝液(QIAGEN製のグアニジニウム塩及びエタノール含有緩衝液)で洗浄し、次いで、8000rpmで1分間遠心した。次に、カラムを、第2回目、500μlのAW2緩衝液(QIAGEN製のエタノール含有緩衝液)で洗浄し、次いで、8000rpmで1分遠心した。乾燥工程では、カラムを、新しい収集管に移し、14,000rpmで3分遠心した。溶出のために、150μlのAE緩衝液(QIAGEN製の低塩溶出緩衝液)を、乾燥させた膜に投下し、次いで、14,000rpmで1分間遠心した。
酢酸セルロース綿球のB部分は、800μlのAVL水性緩衝液(QIAGEN製のグアニジニウム塩を含む高塩緩衝液)に、穏やかに攪拌しながら室温で5分間溶解させた。この縣濁液400μlを、2mlのマイクロ遠心管に移し、この縣濁液を含む管に、720μlの脱イオン水、及び20μlのプロテイナーゼK(QIAGEN製)を加えた。混合は、渦巻き攪拌によって実行し、サンプルを、56℃で10分間インキュベートした。さらに別の456μlのAVL緩衝液(QIAGEN製)、及び800μlのエタノールを加え、混合を渦巻き攪拌によって実行した。次に、サンプルを、カラムに移した(QIAGEN製のQIAamp(登録商標)Mini Spinカラム)。カラムを8,000rpmで1分間遠心し、核酸を膜に結合させた。カラムを、第1回目、500μlのAW1緩衝液(QIAGEN製)で洗浄し、次いで、8000rpmで1分間遠心した。次に、カラムを、第2回目、500μlのAW2緩衝液(QIAGEN製)で洗浄し、次いで、8000rpmで1分間遠心した。乾燥工程では、カラムを、新しい収集管に移し、14,000rpmで3分間遠心した。溶出のために、150μlのAE緩衝液(QIAGEN製の低塩溶出緩衝液)を乾燥させた膜に投下し、次いで14,000rpmで1分間遠心した。
種々の緩衝液におけるセルロースアセテートフタレートの可溶性
種々の緩衝液におけるセルロースアセテートフタレート(CAP)の可溶性を調べた。
結果は以下の表1において示されている。
カオトロピック液による、融解可能なスワブからのDNA抽出
パラフィン製頭部を有するスワブ(Paraplast−XTRA、融解点52℃、McCormick Scientific)を用いて、HeLa細胞からサンプルを採取した。スワブを、カオトロピック塩の添加又は無添加下に、種々の溶液において70℃で融解させた。DNAは、QIAamp DNA(QIAGEN)技法を用いて抽出した。
単層として増殖させたHeLa細胞を、PBSで2度洗浄した。スクレーパー形状のParaplast−XTRA製頭部を持つスワブを用いて細胞サンプルを採取した。このスワブの頭部を、2mlのマイクロ遠心管において、カオトロピック塩添加又は無添加の、種々の試薬(表2、試薬組成)500μlに溶解した。スワブ頭部の融解は、穏やかな攪拌下に72℃で10分インキュベーションすることによって実現した。フルスピード(14,000rpm)で1分間遠心後、パラプラストは、液体溶液の上に固体層を形成した。液体溶液400μlを回収し、新しい2mlマイクロ遠心管に移した。
試薬A(1)、B(2および4)、C(3および5)、D(6)、並びにE(7)中に溶融したパラプラストスワブからの溶出液に関するアガロースゲル電気泳動。M:ラムダHind III分子量マーカー
カオトロピック液による可溶性スワブからの核酸抽出
酢酸セルロース製頭部を持つスワブを、唾液及び種々のウィルス及び細菌病原体の混合物で含浸した。スワブを、アセトンか、又はカオトロピック剤含有緩衝液(AVL緩衝液、QIAGEN)に溶解した。QIAampウィルスRNA(QIAGEN)手順を用いて核酸を抽出した。
Chlamydia trachomatis、及びA型肝炎ウィルス(HAV)を含む病原体混合物を調製した。5mlの唾液を、50ml管に収集した。唾液の100μl分液、及び病原体混合物の40μl分液を、酢酸セルローススワブに含浸させた。スワブを、3mlのアセトン、又は3mlのAVL緩衝液のいずれかを含む15ml管に移した。3回転倒させた後、サンプルを室温で24時間保存した。保存後、560μlのエタノール(99.5%)を700μlのサンプルに加えた。混合は、渦巻き攪拌によって実行し、630μlサンプルを、膜を備えたカラムに移した(QIAGEN製のQIAamp Mini Spinカラム)。カラムを、8,000rpmで1分間遠心し、核酸を膜に結合させた。残りのサンプルを、QIAamp Mini Spinカラムに移し、カラムを、8,000rpmで1分間遠心した。カラムを、第1回目、500μlの洗浄緩衝液AW1(QIAGEN)で洗浄し、次いで、8000rpmで1分間遠心した。カラムを、第2回目、500μlの洗浄緩衝液AW2(QIAGEN)で洗浄し、次いで、8000rpmで1分遠心した。乾燥工程では、カラムを、新しい収集管に移し、14,000rpmで3分遠心した。溶出のために、100μlの水性緩衝液AVE(QIAGEN)を、乾燥させた膜に投下した。1分間のインキュベーション後、10,000rpmで1分間遠心した。
溶解スワブから抽出されたChlamydia trachomatis−DNAは、メーカーの記載する通り、ABI配列検出システムABI PRISM 7900に接続したartus C.trachomatis TM PCRキット(QIAGEN)を用いて分析した。
溶解スワブから抽出したHAV−RNAは、メーカーの記載する通り、Rocheから支給されたLight Cycler 1.0に納めたartus HAV LC RT−PCRキット(QIAGEN)を用いて分析した。
C.trachomatisデータと同様に、artus HAV LC RT−PCRにおいても、CT値は、アセトンサンプルに比べ、AVLに溶解させたサンプルにおいてより低かった(デルタCT=−1.87)。
Claims (2)
- 生物供給源から生物サンプルを直接収集するためのシステムであって:
少なくとも一つの開放端を有する容器、
前記少なくとも一つの開放端上に、又は該開放端中に適合する閉鎖部、
前記生物サンプルが堆積される、セルロースアセテートおよびセルロースアセテートフタレートからなる群より選択される少なくとも1つを含む固体マトリックス、及び
前記閉鎖部に接続される、前記固体マトリックスを保持するための保持要素を含み、
前記固体マトリックスの材料が、少なくとも部分的に液体又は溶解状態に転移可能であり、
前記容器はさらに、前記固体マトリックスの材料を少なくとも部分的に液体又は溶解状態に転移させる少なくとも一つの処理剤であって、pHを7より大きい値に調整し、かつ少なくとも一つのカオトロピック物質を含む緩衝液である処理剤を含み、かつ
前記固体マトリックスは、前記容器の輸送中に前記液体又は溶解状態に転移することを特徴とする、システム。 - 前記容器が、少なくとも一つの高イオン強度物質を、さらに含むことを特徴とする、請求項1に記載のシステム。
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WO2008080932A1 (en) | 2008-07-10 |
EP2108110A1 (en) | 2009-10-14 |
US20100317051A1 (en) | 2010-12-16 |
AU2007341280A1 (en) | 2008-07-10 |
US20110008771A1 (en) | 2011-01-13 |
EP2108110B1 (en) | 2019-03-20 |
EP2124756A1 (en) | 2009-12-02 |
JP2010515037A (ja) | 2010-05-06 |
EP1938756A1 (en) | 2008-07-02 |
JP5127838B2 (ja) | 2013-01-23 |
WO2008080930A1 (en) | 2008-07-10 |
AU2007341282A1 (en) | 2008-07-10 |
CN101631502A (zh) | 2010-01-20 |
US8911680B2 (en) | 2014-12-16 |
AU2007341280B2 (en) | 2012-09-13 |
CN101631502B (zh) | 2013-08-28 |
AU2007341282B2 (en) | 2012-09-20 |
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