JP2017046684A - 信号増幅器を含む検出法 - Google Patents
信号増幅器を含む検出法 Download PDFInfo
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- JP2017046684A JP2017046684A JP2016140489A JP2016140489A JP2017046684A JP 2017046684 A JP2017046684 A JP 2017046684A JP 2016140489 A JP2016140489 A JP 2016140489A JP 2016140489 A JP2016140489 A JP 2016140489A JP 2017046684 A JP2017046684 A JP 2017046684A
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- capture complex
- signal amplifier
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H21/00—Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids
- C07H21/04—Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids with deoxyribosyl as saccharide radical
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
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- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
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- 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
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- C12Q1/001—Enzyme electrodes
- C12Q1/004—Enzyme electrodes mediator-assisted
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- 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
- C12Q1/6804—Nucleic acid analysis using immunogens
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- 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
- C12Q1/6813—Hybridisation assays
- C12Q1/6816—Hybridisation assays characterised by the detection means
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- 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
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- C12Q1/6813—Hybridisation assays
- C12Q1/6816—Hybridisation assays characterised by the detection means
- C12Q1/682—Signal amplification
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- C—CHEMISTRY; METALLURGY
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Abstract
【解決手段】標的分子を含む捕捉複合体形成し、捕捉複合体を、信号増幅器と結合させることを含む、検出法であって、ここで、捕捉複合体は、正味電荷を有し;信号増幅器は、捕捉複合体に親和性を有し、そして、捕捉複合体の正味電荷を有する、標的分子の検出する方法。
【選択図】なし
Description
検出感度と検出限界を改善するために、信号増幅器を含む検出方法が提供される。
標的分子を含む捕捉複合体に親和性を有する、信号増幅器(ここで、捕捉複合体は、正味電荷を有し;信号増幅器は、捕捉複合体の正味電荷と同じ正味電荷を有する。);および
捕捉複合体と信号増幅器が結合することに起因する、電位変化を検出するための電気信号検出素子。
本発明は、標的分子を検出するための方法を提供し、標的分子を含む捕捉複合体を形成し;そして、信号増幅器と捕捉複合体を結合することを含む、標的分子を検出するための方法を提供する。ここで、捕捉複合体は、正味電荷を有し;信号増幅器は、捕捉複合体に親和性を有し、そして、捕捉複合体の正味電荷と同じ正味電荷を有する。
オリゴヌクレオチド アプタマーは、SELEX(試験管内選択法)(systematic evolution of ligands by exponential enrichment)法、のような大規模なランダム配列プールから、それを選択することによって取得することができる。捕捉複合体に対応するときに、必要なオリゴヌクレオチド アプタマーを選択できる。
認識分子として、部分的に中性の一本鎖オリゴヌクレオチドの合成:
デオキシ シチジン(n−ac)p−メトキシ ホスホロアミダイト、チミジン p−メトキシ ホスホロアミダイト、デオキシ グアノシン (n−ibu) p−メトキシ ホスホロアミダイトおよびデオキシ アデノシン(n−bz) p−メトキシ ホスホロアミダイト(全てを、ChemGenes株式会社、米国から購入した)は、固相リン酸トリエステル合成に基づき、または、アプライド バイオシステム 3900 高スループット DNAシンセサイザー(Genomics(R) Biosci & Techまたはミッション バイオテックによって提供される)を用いて、指定された配列に従って、オリゴヌクレオチドを合成するために、使用された。
信号増幅器として、RNAアプタマーの合成
10X PCR緩衝液 2μL、
10mM dNTP 0.5μL、
10μM cDNAプライマー1 0.5μL(インテグラル デバイス テクノロジー(IDT)、米国から購入)、
10μM cDNAプライマー2 0.5 μL(インテグラル デバイス テクノロジー(IDT)、米国から購入)、
10μM cDNA R18 RNA アプタマー テンプレート 0.5μL(インテグラル デバイス テクノロジー(IDT)、米国から購入)、
Tag DNA ポリメラーゼ 0.5μL、および
DI−水 15.5μL。
PCRプログラム:1サイクル、95℃で1分、50℃で1分、そして、72℃で1分;95℃、45秒で、40サイクル、55℃で45秒、および72℃で45秒;および72℃、3分で、1サイクル。PCRの生産物は精製され、−20℃で保存された。
2X緩衝液 25μL、
1μgのPCR生産物 2.5μL、
DI−水 17.5μL、および
酵素 T7 エクスプレス 5μL(T7 RiboMAXTM エクスプレス大規模RNA生産システム、Promega、米国)。
反応混合物は、37℃で、2時間反応した。転写産物を精製した。
Siナノワイヤ(SiNW)チップを、アセトン40mLで2回、エタノール40mLで2回およびDI−水40mLで2回洗浄した。表面を、窒素空気で乾燥し、30秒間、酸素プラズマで導入された。25%の(3−アミノプロピル)トリエトキシシラン(APTES)80μLとエタノール4mLを含む溶液は、30分間、表面を修飾するために使用された。チップは、再度、エタノール40mLで2回洗浄され、120℃で、10分、加熱された。チップは、1時間、室温で、液体のグルタルアルデヒド(10mMのリン酸ナトリウム緩衝液3mLおよびグルタルアルデヒド1mL)に浸漬された。チップは、リン酸ナトリウム緩衝液で、2回洗浄された。
チップは、マイクロ流体システムに装備され。1mMのビスートリス プロパンの5mL/hrを、チャネル(channel)に導入し、そして、信号は、ベースラインとしてモニターされた。
Claims (27)
- 標的分子(target molecule)の検出する方法であって、
標的分子を含む捕捉複合体(capturing complex)を形成すること;および
前記捕捉複合体と、信号増幅器とを結合すること、
を含む方法。ここで、捕捉複合体は、正味の電荷を有し;信号増幅器は、捕捉複合体に親和性を有し、そして、捕捉複合体の正味の電荷と同じ正味の電荷を有する。 - さらに、親和性を持つ標的分子を捕捉することができる、認識分子(recognizing molecule)との捕捉複合体を形成することを含む、請求項1に記載された方法。
- 捕捉複合体が、固体表面に接着し、または、固体表面から距離を開けて位置する(spaced apart from the solid surface by a distance)、請求項1に記載された方法。
- 固体表面が、電界効果トランジスタ(FET)のトランジスタ表面であるか、または、表面プラズモン共鳴(SPR)の金属表面である、請求項3に記載された方法。
- 固体表面の材料が、多結晶シリコン、または、単結晶シリコンである、請求項3に記載された方法。
- 前記信号増幅器が、オリゴヌクレオチド分子である、請求項1に記載された方法。
- 信号増幅器が、オリゴヌクレオチド アプタマーである、請求項2に記載された方法。
- さらに、捕捉複合体と信号増幅器の結合に起因する、電位の変化をモニターすることを含む、請求項1に記載された方法。
- 捕捉複合体と信号増幅器の結合に起因する、電位の変化を検出するための電気信号検出素子と、固体表面とを結合する、請求項5に記載された方法。
- 前記電気信号検出素子が、電界効果トランジスタまたは表面プラズモン共鳴法である、請求項9に記載された方法。
- 前記認識分子が、少なくとも1つの電気的に中性のヌクレオチドおよび、少なくとも1つの負電荷ヌクレオチドを含む、部分的に中性な一本鎖オリゴヌクレオチドを含む、請求項5に記載された方法。
- 電気的に中性のヌクレオチドが、C1−C6アルキル基によって置換された、リン酸基を含む、請求項11に記載された方法。
- 負電荷のヌクレオチドが、無置換のリン酸基を含む、請求項11に記載された方法。
- 認識分子が、固体表面に接着されており、そして、部分的に中性の一本鎖オリゴヌクレオチドが、固体表面に接着されている最初の部分を含み;その最初の部分の長さが、部分的に中性の一本鎖オリゴヌクレオチドの全長の約50%であり;そして、最初の部分が、少なくとも1つの電気的に中性のヌクレオチドと、少なくとも1つの負電荷のヌクレオチドを含む、請求項11に記載された方法。
- 標的分子を検出するためのキットであって、
標的分子を含む、捕捉複合体に親和性を有する、信号増幅器(ここで、捕捉複合体は、正味の電荷を有し;信号増幅器は、捕捉複合体の正味の電荷と同じ正味の電荷を有する。);および
捕捉複合体と信号増幅器の結合に起因する、電位の変化を検出するための電気信号検出素子;
を含む、キット。 - 親和性で、標的分子を捕捉し、捕捉複合体を形成することができる、認識分子をさらに含む、請求項15に記載された、キット。
- 捕捉複合体が、固体表面上に接着するか、または、捕捉複合体が、固体表面から距離を置いて位置する、請求項15に記載された、キット。
- 固体表面が、電界効果トランジスタ(FET)のトランジスタ表面または表面プラズモン共鳴(SPR)の金属表面である、請求項17に記載された、キット。
- 固体表面の材料が、多結晶シリコンまたは、単結晶シリコンである、請求項17に記載された、キット。
- 信号増幅器が、オリゴヌクレオチド分子である、請求項15に記載された、キット。
- 信号増幅器が、オリゴヌクレオチド アプタマーである、請求項16に記載された、キット。
- 固体表面が、電気信号を検出するための、電気信号検出素子と結合している、請求項19に記載された、キット。
- 電気信号検出素子が、電界効果トランジスタまたは表面プラズモン共鳴である、請求項15に記載された、キット。
- 認識分子が、少なくとも1つの電気的に中性のヌクレオチドと、少なくとも1つの負電荷ヌクレオチドを含む、部分的に中性の一本鎖オリゴヌクレオチドを含む、請求項18に記載された、キット。
- 電気的に中性のヌクレオチドが、C1−C6アルキル基によって置換されたリン酸基を含む、請求項24に記載された、キット。
- 負電荷のヌクレオチドが、無置換のリン酸基を含む、請求項24に記載された、、キット。
- 認識分子が、固体表面に接着され、そして、部分的に中性の一本鎖オリゴヌクレオチドが、固体表面に接着されている最初の部分を含み;その最初の部分の長さが、部分的に中性の一本鎖オリゴヌクレオチドの全長の約50%であり;そして、最初の部分は、少なくとも1つの電気的に中性のヌクレオチドと少なくとも1つの負電荷のヌクレオチドを含む、請求項24に記載された、キット。
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US10372659B2 (en) * | 2016-07-26 | 2019-08-06 | Samsung Electronics Co., Ltd. | Multi-mode NMVE over fabrics devices |
RU2698134C2 (ru) | 2017-12-04 | 2019-08-22 | Общество с ограниченной ответственностью "Биолабмикс" | Способ амплификации нуклеиновых кислот с использованием фосфорилгуанидиновых олигонуклеотидов |
CN108957007B (zh) * | 2018-07-24 | 2021-08-17 | 无锡市人民医院 | 一种联合透析装置和硅纳米线场效应管的生物传感器 |
CN110865113B (zh) * | 2019-11-19 | 2024-03-26 | 复旦大学 | 一种基于dna纳米机器修饰场效应晶体管传感器界面的方法 |
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US20170016894A1 (en) | 2017-01-19 |
KR20170009787A (ko) | 2017-01-25 |
TWI684597B (zh) | 2020-02-11 |
TWI736543B (zh) | 2021-08-21 |
TW201721146A (zh) | 2017-06-16 |
JP2017060461A (ja) | 2017-03-30 |
US20190233464A1 (en) | 2019-08-01 |
KR20170009786A (ko) | 2017-01-25 |
EP3118332B1 (en) | 2018-06-06 |
EP3118332A1 (en) | 2017-01-18 |
TW201713678A (zh) | 2017-04-16 |
CN106350569A (zh) | 2017-01-25 |
EP3118331A1 (en) | 2017-01-18 |
TW201713677A (zh) | 2017-04-16 |
CN106353504A (zh) | 2017-01-25 |
JP2017074035A (ja) | 2017-04-20 |
US20170015699A1 (en) | 2017-01-19 |
US20170016051A1 (en) | 2017-01-19 |
KR20170009788A (ko) | 2017-01-25 |
CN106350516A (zh) | 2017-01-25 |
EP3118330B1 (en) | 2019-09-11 |
JP6998574B2 (ja) | 2022-02-04 |
EP3118330A1 (en) | 2017-01-18 |
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