JP4394684B2 - ポリヌクレオチドの配列の決定 - Google Patents
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Description
本発明は,ポリヌクレオチドの配列を決定する方法,またはポリヌクレオチド配列間の変動を検出する方法に関する。
ポリヌクレオチドの配列を決定する能力は,今やヒトゲノムの30億塩基の全配列を決定したヒトゲノムプロジェクトにより示されているように,科学において非常に重要である。しかし,この配列情報は平均的なヒトを表しており,遺伝子レベルで個体間の相違を理解することが強く求められている。
本発明は,ポリメラーゼ反応の間にポリメラーゼが標的ポリヌクレオチドに結合する時間を測定することにより,ポリヌクレオチド配列の同定を行うことができることの実現に基づく。一般に,ポリメラーゼは,取り込みに利用可能なヌクレオチドがない場合,標的ポリヌクレオチドに結合するのにより少ない時間を費やす。したがって,利用可能な唯一のヌクレオチドが非相補的である場合,ポリメラーゼはポリヌクレオチドにより短い時間結合し,これを判定することにより,標的ポリヌクレオチドの相補的配列の種類を明らかにすることができる。
本明細書において用いる場合,"ポリヌクレオチド"または"標的ポリヌクレオチド"との用語は,広義に解釈すべきであり,DNAおよびRNAを含み,修飾されたDNAおよびRNA,ならびに他のハイブリダイズ可能な核酸様分子,例えばペプチド核酸(PNA)を含む。標的ポリヌクレオチドは二本鎖でも一本鎖でもよい。好ましくは,標的ポリヌクレオチドは,少なくとも部分的には一本鎖であり,より好ましくは,ポリメラーゼ酵素が標的ポリヌクレオチドに結合しうるように,プライマー配列がこれに結合している。このことは当業者には理解されるであろう。
P=X(2)E1+X(2)E2+X(3)E3+ ・・・
式中,Pは誘導された分極であり,X(n)はn次の非線形感受率であり,Eは電場ベクターである。第1項は光の正常な吸収および反射を記述し,第2項は第二高調波発生(SHG),和周波数および差周波数の発生を記述し,第3項は光散乱,誘導ラマンプロセス,第三高調波発生(TGH),および二光子および三光子吸収の両方を記述する。
入射波を生成するコヒーレント照射源;
固定化されたポリヌクレオチドを支持する担体表面であって,基板上に設けられ,表面電磁波(SEW)を支持することができる担体表面;
入射波をSEWおよび第1の散乱波に分割する手段(ここで,SEWは担体表面に沿って伝播し固定化されたポリヌクレオチドと相互作用する);
SEWから第2の散乱波を生成する手段;および
第1の散乱波と第2の散乱波との間の干渉をモニターするための検出器。
配列番号1
CAAGGAGAGGACGCTGCTTGTCGAAGGTAAGGAACGGACGAGAGAAGGGAGAG
配列番号2
ビオチン−CTCTCCCTTCTCTCGTC
Claims (13)
- 標的ポリヌクレオチドの配列を同定する方法であって,
(i)標的ポリヌクレオチドを,ポリメラーゼ反応が進行するのに適した条件下でポリメラーゼ酵素およびヌクレオチドA,T(U),GおよびCの1つと接触させ;
(ii)ポリメラーゼが標的ポリヌクレオチドに結合し,続いて標的ポリヌクレオチドから解離するのに要した時間を測定し,このことにより,ポリメラーゼがヌクレオチドを標的ポリヌクレオチド上に取り込ませたか否かを判定し;
(iii)追加のヌクレオチドを用いて任意に工程(i)および(ii)を繰り返し,このことにより標的ポリヌクレオチドの配列を同定する,
の各工程を含む方法。 - 標的ポリヌクレオチド中の変異を同定する方法であって,
(i)標的ポリヌクレオチドを,ポリメラーゼ反応が進行するのに適した条件下でポリメラーゼ酵素およびヌクレオチドA,T(U),GおよびCの1つと接触させ;
(ii)ポリメラーゼが標的ポリヌクレオチドに結合し,続いて標的ポリヌクレオチドから解離するのに要した時間を測定し,このことにより,ポリメラーゼがヌクレオチドを標的ポリヌクレオチド上に取り込ませたか否かを同定し,そして,標的の天然配列を参照して,変異が存在するか否かを判定する,
の各工程を含む方法。 - 異なるヌクレオチドのそれぞれを順に用いて,取り込みが検出されるまで工程(i)−(ii)を実施する,請求項1または2に記載の方法。
- 標的ポリヌクレオチドが支持材料上に固定化されている,請求項1−3のいずれかに記載の方法。
- 複数の標的ポリヌクレオチドが支持材料上に固定化されている,請求項1−4のいずれかに記載の方法。
- 工程(ii)がポリメラーゼと標的ポリヌクレオチドとの間の相互作用により生ずる放射線の変化を測定することにより行われる,請求項1−5のいずれかに記載の方法。
- 工程(ii)がラマン散乱を測定することにより行われる,請求項1−6のいずれかに記載の方法。
- 工程(ii)が表面電磁波を適用することにより行われる,請求項1−6のいずれかに記載の方法。
- 表面電磁波が表面プラズモン波である,請求項1−8のいずれかに記載の方法。
- 検出が表面電磁波を測定することにより行われる,請求項1−8のいずれかに記載の方法。
- ポリメラーゼがこれに結合した検出可能な標識を含む,請求項1−10のいずれかに記載の方法。
- 標識が蛍光団である,請求項11記載の方法。
- ポリメラーゼがさらにエネルギードナー標識またはエネルギーアクセプター標識を含み,および工程(ii)が蛍光団とエネルギードナーまたはアクセプターとの間のエネルギー伝達を測定することにより行われる,請求項1−6のいずれかに従属する請求項11記載の方法。
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PCT/GB2004/003232 WO2005010210A2 (en) | 2003-07-24 | 2004-07-26 | Determining the sequence of a polynucleotide |
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US7888073B2 (en) | 2011-02-15 |
ATE388243T1 (de) | 2008-03-15 |
CA2533579A1 (en) | 2005-02-03 |
EP1649051B1 (en) | 2008-03-05 |
DK1649051T3 (da) | 2008-07-07 |
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KR20060052863A (ko) | 2006-05-19 |
CA2780958A1 (en) | 2005-02-03 |
WO2005010210A3 (en) | 2005-03-24 |
CA2780958C (en) | 2016-10-25 |
JP2006528485A (ja) | 2006-12-21 |
DE602004012273D1 (de) | 2008-04-17 |
US20080070236A1 (en) | 2008-03-20 |
US7604963B2 (en) | 2009-10-20 |
US8592183B2 (en) | 2013-11-26 |
US20100279288A1 (en) | 2010-11-04 |
RU2006105626A (ru) | 2006-08-10 |
BRPI0412813A (pt) | 2006-09-26 |
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