JP4913755B2 - 試料溶解および反応表面のコーティング - Google Patents
試料溶解および反応表面のコーティング Download PDFInfo
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- JP4913755B2 JP4913755B2 JP2007554488A JP2007554488A JP4913755B2 JP 4913755 B2 JP4913755 B2 JP 4913755B2 JP 2007554488 A JP2007554488 A JP 2007554488A JP 2007554488 A JP2007554488 A JP 2007554488A JP 4913755 B2 JP4913755 B2 JP 4913755B2
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- 108020004707 nucleic acids Proteins 0.000 claims abstract description 82
- 150000007523 nucleic acids Chemical class 0.000 claims abstract description 82
- 102000039446 nucleic acids Human genes 0.000 claims abstract description 82
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- 230000005661 hydrophobic surface Effects 0.000 claims description 34
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- 238000002156 mixing Methods 0.000 claims description 5
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- YSULOORXQBDPCU-UHFFFAOYSA-N 2-(trimethylazaniumyl)ethanehydrazonate;hydrochloride Chemical compound [Cl-].C[N+](C)(C)CC(=O)NN YSULOORXQBDPCU-UHFFFAOYSA-N 0.000 description 2
- 239000001763 2-hydroxyethyl(trimethyl)azanium Substances 0.000 description 2
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- RJWLLQWLBMJCFD-UHFFFAOYSA-N 4-methylpiperazin-1-amine Chemical compound CN1CCN(N)CC1 RJWLLQWLBMJCFD-UHFFFAOYSA-N 0.000 description 2
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- 102000007469 Actins Human genes 0.000 description 2
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- CEFDTSBDWYXVHY-UHFFFAOYSA-N n'-[2-(diethylamino)ethyl]ethane-1,2-diamine Chemical compound CCN(CC)CCNCCN CEFDTSBDWYXVHY-UHFFFAOYSA-N 0.000 description 2
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- XNYHZQDXUVCHJF-UHFFFAOYSA-N 1-[bis(2-methylpropyl)amino]butan-1-ol Chemical compound CCCC(O)N(CC(C)C)CC(C)C XNYHZQDXUVCHJF-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- CPVZVEFIBNWXMH-UHFFFAOYSA-N 2-[2-(diethylamino)ethylamino]ethanol Chemical compound CCN(CC)CCNCCO CPVZVEFIBNWXMH-UHFFFAOYSA-N 0.000 description 1
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- CGMXEHSYBRPJJL-UHFFFAOYSA-N 4-[bis(2-methylpropyl)amino]butan-1-ol Chemical compound CC(C)CN(CC(C)C)CCCCO CGMXEHSYBRPJJL-UHFFFAOYSA-N 0.000 description 1
- PHOQVHQSTUBQQK-SQOUGZDYSA-N D-glucono-1,5-lactone Chemical compound OC[C@H]1OC(=O)[C@H](O)[C@@H](O)[C@@H]1O PHOQVHQSTUBQQK-SQOUGZDYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
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- 239000005977 Ethylene Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 239000007984 Tris EDTA buffer Substances 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000007098 aminolysis reaction Methods 0.000 description 1
- 238000005915 ammonolysis reaction Methods 0.000 description 1
- 238000012197 amplification kit Methods 0.000 description 1
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- 229920001400 block copolymer Polymers 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 230000009881 electrostatic interaction Effects 0.000 description 1
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- 239000012634 fragment Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
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- 235000012209 glucono delta-lactone Nutrition 0.000 description 1
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- 239000006166 lysate Substances 0.000 description 1
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- 125000002496 methyl group Chemical class [H]C([H])([H])* 0.000 description 1
- 210000003470 mitochondria Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 210000003463 organelle Anatomy 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- BEOOHQFXGBMRKU-UHFFFAOYSA-N sodium cyanoborohydride Chemical compound [Na+].[B-]C#N BEOOHQFXGBMRKU-UHFFFAOYSA-N 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6888—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms
- C12Q1/689—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms for bacteria
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Genetics & Genomics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Eyeglasses (AREA)
- Microscoopes, Condenser (AREA)
- Materials For Medical Uses (AREA)
Description
(i)第一の成分は、第一の疎水性モノマーまたはその誘導体を含み、
(ii)第二の成分は、第二のポリマーまたはその誘導体を含み、かつ
(iii)アミノ基は、第二の成分に共有結合する、
共重合体。
(ii)工程(i)の混合物を疎水性表面に適用して、生体試料中の核酸を、溶解緩衝液中の共重合体によって疎水性表面上に固定化すること;
(iii)鋳型として疎水性表面上に固定化された核酸を用いて、核酸の増幅を実施すること
を含む、核酸の増幅方法。
アンモノリシスによりDIPAEAと共有結合したポリ(スチレン-co-無水マレイン酸)の合成
ポリ(スチレン-co-無水マレイン酸)のDIPAEAとの共有結合を以下の通り合成した:
試薬
以下の試薬を使用した:水酸化カリウム;メタノール;ミリポア水;ラクトース一水和物(360.3g/mol)(Fluka 61340);ヨウ素(126.9g/mol)(Fluka 57655); ジエチルエーテル;およびアンバーライトIR-120(Fluka 06428)。
32gの水酸化カリウムを400mlのメタノールに溶解した。加えて、24g(67mmol)のラクトース一水和物を、20mlのミリポア水および50mlのメタノールよりなる混合物に溶解した。KPGスターラー、滴下漏斗および還流冷却器を備えた三口フラスコ中で、34.2g(270mmol)のヨウ素を240mlのメタノールに溶解し、反応混合物を40℃に加熱した。ラクトース一水和物溶液を滴下漏斗からゆっくり添加した。次の工程において、滴下漏斗を新しい滴下漏斗に換え、反応温度をなお40℃に維持しながら、水酸化カリウム溶液を1時間掛けてゆっくり添加した。ヨウ素の色が消失した後、さらに1時間、温度を40℃に維持した。反応混合物を30分より長く、0℃に冷却し、懸濁液を、空隙率4のガラス吸引フィルター(スコット社(Schott AG)、ドイツ、マインツ)で吸引濾過した。残渣を両者とも0℃に冷却した50mlのメタノールおよび50mlのジエチルエーテルで洗浄し、乾燥状態まで吸引濾過した。
試薬
以下の試薬を使用した:ポリ(スチレン-co-無水マレイン酸)、α-クミル-末端基、分子量1600、アルドリッチ(Aldrich)、Cat. No. 44,238-0; 1,6-ジアミノヘキサン、116.2g/mol、フルカ(Fluka)33000; ラクトノラクトン(上述の通り合成); 過ヨウ素酸ナトリウム; 2-(ジイソプロピルアミノ)-エチルアミン(DIPAEA)、フルカ(Fluka)、Cat. No. 38320; シアノホウ化水素ナトリウム; および、無水エタノール.
2.5gのポリスチレン-co-無水マレイン酸を50mlの一口フラスコに加え、予め融解した20mlの1,6-ジアミノヘキサンも加えた。フラスコをロータベーパー(Rotavapor)に取り付け、懸濁液を100℃で1時間加熱し、120℃でさらに2時間加熱した。その後、揮発性化合物を、1mbarの減圧で50℃で除去した。
共重合体でコートしたプレートで実施するリアルタイムPCR
試料の調製(一般的プロトコル)
1.100μlの溶解緩衝液をコートしていないストリップのそれぞれのウェルに分注する。
2.10μlの血液試料をそれぞれのウェルに加え、15回上下にピペッティングして混合する。
3.室温で15分間ストリップをインキュベートする。
4.真空に接続したピペットチップを使用して可能な限りの液体を吸引する。
5.適宜のウェルに120μlの洗浄溶液を分注する。
6.可能な限りの液体を吸引する。
7.25μlのPCRマスターミックス(Mastermix)を加え、定量的PCR(qPCR)を実施する。
KS19-EL: DIPAEAと共有結合したポリ(スチレン-co-無水マレイン酸)(共重合体"KS19"[10 mg/ml])およびキアゲン・バッファー(QIAGEN Buffer) EL (155mM NH4Clおよび10mM KHCO3を含有する赤血球溶解物)の混合物。KS19のバッファーELに対する容量比は、1:1〜1:2.5の間であってもよい。
KS19-RBCL: ポリマー"KS19"(10mg/ml)およびジェントラの赤血球溶解緩衝液RBCL(ジェントラ(Gentra)、米国ミネソタ州、ミネアポリス)の1:1(容量:容量)混合物。
TE(10mM Tris/Cl pH 8.0; 1mM EDTA)、0.05%ノニデット(Nonidet)P40(NP40)を含むTE、または脱イオン水。
第一の実験
この実験において、血液試料の溶解および試料中の核酸分子のPCRプレートへの結合を、上述の通り実施した。図1は、β-アクチンをコードする染色体性遺伝子を増幅した、定量的リアルタイムPCRの結果を表す。y軸は、検出された増幅DNAの"ng"(ナノグラム)を示し、X軸は、種々の溶解緩衝液を用いた種々の調製設定を示す。一番左のカラムは、洗浄に蒸留水を用いた以外は上述のプロトコルに従って、溶解緩衝液としてKS19-ELを用い、かつ非コートプレートを用いた核酸増幅を表し、一方、他の全てのカラムは、KS19で予めコートしたプレートおよび共重合体を含まない種々の溶解緩衝液を用いた核酸増幅を表す。
この実験において、前の結果を確認した。加えて、溶解緩衝液を修飾し、核酸の特異性を示す対照を講じた。対照として、溶解緩衝液ELを蒸留水で1:2に希釈し、従って、図2において第一のカラムと最後のカラムの違いは、KS19ポリマーの存在だけであった。図2のY軸は、リアルタイムPCRの平均"Ct"値を示し、一方、X軸は、KS19ポリマーをバッファーELまたはバッファーPBCLで希釈した種々の溶解緩衝液-共重合体の組み合わせを示す。KS19-EL、KS19-EL2、KS19-EL3、およびKS19-EL4は、KS19をバッファーELで、それぞれ1:2、1:2.5、1:3、および1:3.5に希釈したものを示し;一方、KS19-RBCLおよびKS19-RBCL2は、KS19をバッファーRBCLで、それぞれ1:2および1:3に希釈したものを示す。第一のカラムと最後のカラムとのCt値の差は、3.3より大きい。このことは、溶解緩衝液中のKS19の存在によって、qPCRにおけるゲノムDNAの検出が10倍に向上することを意味する(PCRにより、増幅された断片数の指数関数的乗算;23.3 = 10が導かれる)。
洗浄緩衝液をミリQ(MilliQ)水からTE緩衝液に変えることによって、プロトコルの性能がさらに向上した。このことにより、KS19-ELおよびELを用いたPCRの間のCtの差が4.5より大きくなる(図3)。この実験は、KS19-ELの使用により、qPCRで2.1ngのゲノムDNAを検出できることを示したが、これは性能が5倍より大きく向上したことを意味する。
Claims (10)
- ポリ(スチレン-co-無水マレイン酸)の無水マレイン酸部分に以下の化学式で表されるスペーサ部分を介して2-(ジイソプロピルアミノ)-エチルアミンを共有結合させた構造を有する共重合体。
−NH−(CH2)6−NH−CH2− - 請求項1の共重合体を含む、溶解緩衝液。
- 請求項1の共重合体および核酸分子を含む、複合体。
- 請求項1の共重合体および溶解緩衝液を含む、生物学的アッセイを実施するためのキット。
- 請求項1の共重合体、溶解緩衝液、洗浄緩衝液、DNAポリメラーゼ、およびdNTPを含む、核酸増幅を実施するためのキット。
- 請求項1の共重合体でコートされた、核酸アッセイを実施するための容器。
- 核酸含有生体試料を請求項2の溶解緩衝液と混合することを含む、生体試料からの核酸の抽出方法。
- 請求項1の共重合体および核酸を疎水性表面を有する反応器に同時または連続的に添加することを含む、核酸の固定化方法。
- (i)核酸含有生体試料を、請求項2の溶解緩衝液と混ぜ合わせて、混合物を形成すること;
(ii)工程(i)の混合物を疎水性表面を有する反応器に添加して、生体試料中の核酸を、溶解緩衝液中の共重合体によって前記疎水性表面上に固定化すること;
(iii)鋳型として前記疎水性表面上に固定化された核酸を用いて、核酸の増幅を実施すること
を含む、核酸の増幅方法。 - 請求項9の方法であって、さらに、工程(iii)の前に前記疎水性表面を洗浄することを含む、方法。
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GB0621050D0 (en) | 2006-10-23 | 2006-11-29 | Univ Strathclyde | Functionalised polymers for labelling metal surfaces |
DE102008032501A1 (de) * | 2008-07-10 | 2010-01-14 | Qiagen Gmbh | Schnelles Analyseverfahren biologischer Mischproben |
DE102008047790A1 (de) * | 2008-09-17 | 2010-04-15 | Qiagen Gmbh | Verfahren zur Normierung des Gehalts von Biomolekülen in einer Probe |
CN106729771A (zh) * | 2011-04-21 | 2017-05-31 | 加利福尼亚大学董事会 | 官能化磁性纳米颗粒及在淀粉样沉积物和神经原纤维缠结成像中用途 |
EP2760999A1 (en) | 2011-09-26 | 2014-08-06 | Qiagen GmbH | Methods for separating nucleic acids by size |
US9937152B2 (en) | 2013-11-19 | 2018-04-10 | Hiroshi Maeda | Derivative of styrene-maleic acid copolymer |
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