JPH11506605A - 増幅反応におけるバックグラウンドを減少させるためにプローブをマスキングする方法 - Google Patents
増幅反応におけるバックグラウンドを減少させるためにプローブをマスキングする方法Info
- Publication number
- JPH11506605A JPH11506605A JP9500861A JP50086197A JPH11506605A JP H11506605 A JPH11506605 A JP H11506605A JP 9500861 A JP9500861 A JP 9500861A JP 50086197 A JP50086197 A JP 50086197A JP H11506605 A JPH11506605 A JP H11506605A
- Authority
- JP
- Japan
- Prior art keywords
- amplification
- probe
- blocking
- oligo
- probes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- C12Q1/6844—Nucleic acid amplification reactions
- C12Q1/686—Polymerase chain reaction [PCR]
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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
- C12Q1/6844—Nucleic acid amplification reactions
- C12Q1/6848—Nucleic acid amplification reactions characterised by the means for preventing contamination or increasing the specificity or sensitivity of an amplification reaction
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Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 個々のヌクレオチド又はオリゴヌクレオチドセグメントを鋳型に従って付 加することにより一つ以上の増幅プローブを反復して伸長させる操作を含む核酸 増幅方法において、a)増幅反応開始前に、少なくとも一つのマスキングした形 態の増幅プローブを供給し、但しマスクは本質的に、マスキングしたプローブヘ テロ二本鎖を形成すべく前記増幅プローブとハイブリダイズしたブロッキングオ リゴからなり、前記ブロッキングオリゴ:増幅プローブヘテロ二本鎖は、標的鎖 :増幅プローブヘテロ二本鎖のK50であるK50ptより小さいK50bpを有し、 前記ブロッキングオリゴは増幅プローブの伸長を阻止し、b)ブロッキングオリ ゴを増幅プローブから変性させて増幅プローブを脱マスキングし、c)脱マスキ ングした増幅プローブを用いて増幅反応を実施することを改良点とする前記核酸 増幅方法。 2. 前記ブロッキングオリゴ:標的鎖ヘテロ二本鎖がやはりK50ptより小さ いK50btを有する請求項1に記載の方法。 3. ブロッキングオリゴを反応混合物から物理的に除去することなく、ブロッ キングオリゴによる増幅反応の妨害を阻止す るステップも含む請求項1に記載の方法。 4. 前記阻止ステップを、増幅プローブについて欠失又はミスマッチを少なく とも一つ有するブロッキングオリゴを使用することによって実施する請求項1に 記載の方法。 5. 前記ブロッキングオリゴ:増幅プローブヘテロ二本鎖のTmを3〜15℃ 低下させる請求項4に記載の方法。 6. 前記阻止ステップを、ブロッキングオリゴを相補的ブロッキングオリゴと ハイブリダイズさせて両方のブロッキングオリゴを反応から効果的に退去させる ブロッキングオリゴホモ二本鎖を形成させることにより実施する請求項3に記載 の方法。 7. ブロッキングオリゴホモ二本鎖のTmを増加させるブロッキングオリゴ上 の相補的テールを使用することにより、マスキングしたプローブのヘテロ二本鎖 よりブロッキングオリゴホモ二本鎖の方を優先的にする請求項6に記載の方法。 8. 前記テールが5から約30ヌクレオチドの長さを有する請求項7に記載の 方法。 9. 前記ブロッキングオリゴホモ二本鎖を共有結合させて、増幅反応を永久に 妨害しないようにする請求項6に記載の方法。 10. 前記共有結合を、ブロッキングオリゴ上に存在する光 活性化可能な基又は化学的結合基を結合することによって実施する請求項9に記 載の方法。 11. ブロッキングオリゴが、マスキングしたプローブ二本鎖内の増幅プロー ブの3’末端より突出する5’伸長を含む請求項1に記載の方法。 12. 前記5’突出伸長が二次構造を形成することができる請求項11に記載 の方法。 13. 前記5’伸長がそれ自体でヘアピンターンを形成する請求項12に記載 の方法。 14. 増幅プローブの3’末端を越えて最初の伸長部内ヌクレオチドが停止塩 基である請求項11に記載の方法。 15. ブロッキングオリゴが、マスキングしたプローブ二本鎖内の増幅プロー ブの伸長及びテーリングを防止する5’ブロッキング部分を含む請求項1に記載 の方法。 16. ブロッキングオリゴが、増幅開始時にブロッキングオリゴの開裂又は分 解を実施するための手段を含む請求項1に記載の方法。 17. 前記開裂又は分解を実施するための手段が、デオキシウラシルN−グリ コシラーゼで処理し次いで熱サイクルにかけ る操作からなる請求項16に記載の方法。 18. 前記増幅反応が少なくとも二つの増幅プローブ/プライマーを使用する ポリメラーゼ連鎖反応であり、前記増幅プローブ/プライマーを両方ともマスキ ングしたプローブの形態で最初に供給する請求項1に記載の方法。 19. 前記増幅反応が少なくとも四つの増幅プローブを使用するリガーゼ連鎖 反応であり、前記プローブのうち少なくとも二つをマスキングしたプローブの形 態で最初に供給する請求項1に記載の方法。 20. 前記リガーゼ連鎖反応が、ギャップを埋めるために伸長しなければなら ない二つのプローブを有するギャップリガーゼ連鎖反応であり、最初にマスキン グされた二つの増幅プローブが伸長する二つのプローブである請求項19に記載 の方法。 21. 共通ブロッキングオリゴが二つの増幅プローブを同時にマスキングする 請求項19に記載の方法。 22. 四つの増幅プローブ全部をマスキングしたプローブの形態で最初に供給 する請求項19に記載の方法。 23. 少なくとも二つの増幅プローブと、少なくとも一つのマスキングしたプ ローブ二本鎖を形成すべく前記増幅プローブ とハイブリダイズさせた少なくとも一つ、必要により二つのブロッキングオリゴ とを含む材料組成物であって、貯蔵条件下では前記増幅プローブのランダム伸長 が阻止され、増幅反応条件下ではポリメラーゼ及びヌクレオチドの存在下に前記 ブロッキングオリゴが増幅プローブの伸長を阻止する組成物。 24. 前記ブロッキングオリゴが増幅プローブの3’末端より突出する5’伸 長を含む請求項23に記載の組成物。 25. 前記5’伸長がそれ自体でヘアピンターンを形成する請求項24に記載 の組成物。 26. 増幅プローブの3’末端を越えて最初の伸長部内ヌクレオチドが停止塩 基である請求項24に記載の組成物。 27. ブロッキングオリゴが、増幅プローブについて欠失又はミスマッチを少 なくとも一つ含む請求項23に記載の組成物。 28. 更に、リガーゼ連鎖反応増幅に適した二つのセンス増幅プローブ及び二 つのアンチセンス増幅プローブも含み、前記増幅プローブが、各センスの一つの 増幅プローブの伸長によって埋められなければならないようなギャップが同じセ ンスのプローブの間に設けられるように構築されており、最初にマスキングされ た二つの増幅プローブが伸長する二つのプローブであ る請求項23に記載の組成物。 29. 四つの増幅プローブの全部がマスキングしたプローブの形態で存在する 請求項28に記載の組成物。 30. 請求項1に記載の組成物とポリメラーゼ試薬とを一つ以上の容器に入れ たものからなるキット。 31. 更にリガーゼ試薬も含む請求項30に記載のキット。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US47815295A | 1995-06-07 | 1995-06-07 | |
US08/478,152 | 1995-06-07 | ||
PCT/US1996/008070 WO1996040992A2 (en) | 1995-06-07 | 1996-05-30 | Probe masking method of reducing background in an amplification reaction |
Publications (1)
Publication Number | Publication Date |
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JPH11506605A true JPH11506605A (ja) | 1999-06-15 |
Family
ID=23898756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9500861A Pending JPH11506605A (ja) | 1995-06-07 | 1996-05-30 | 増幅反応におけるバックグラウンドを減少させるためにプローブをマスキングする方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5814492A (ja) |
EP (1) | EP0832280A2 (ja) |
JP (1) | JPH11506605A (ja) |
CA (1) | CA2223050A1 (ja) |
WO (1) | WO1996040992A2 (ja) |
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1996
- 1996-05-30 WO PCT/US1996/008070 patent/WO1996040992A2/en not_active Application Discontinuation
- 1996-05-30 EP EP96916811A patent/EP0832280A2/en not_active Withdrawn
- 1996-05-30 CA CA002223050A patent/CA2223050A1/en not_active Abandoned
- 1996-05-30 JP JP9500861A patent/JPH11506605A/ja active Pending
-
1997
- 1997-08-13 US US08/912,976 patent/US5814492A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2223050A1 (en) | 1996-12-19 |
US5814492A (en) | 1998-09-29 |
WO1996040992A2 (en) | 1996-12-19 |
WO1996040992A3 (en) | 1997-01-23 |
EP0832280A2 (en) | 1998-04-01 |
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