JP2008529548A - ウイルスを用いることによる試料中の生細胞を検出するための方法 - Google Patents
ウイルスを用いることによる試料中の生細胞を検出するための方法 Download PDFInfo
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Abstract
Description
(i)試料と、生細胞に感染することのできるウイルスを、当該ウイルスが、任意のそのような生細胞内に感染し複製することができる条件下でインキュベートすること;
(ii)細胞中のウイルスの複製により得られる任意の核酸を検出すること、
を含んで成る、試料中の生細胞を検出するための方法を提供する。
(i)試料と、生細胞に感染することのできるウイルスを、当該ウイルスが、任意のそのような生細胞内に感染し複製することができる条件下でインキュベートすること;
(ii)細胞中のウイルスの複製により得られる任意の核酸を検出すること、ただし、当該ウイルスが、マーカー配列を含むように改変された改変ウイルスである場合、検出される核酸は、細胞内でのウイルスの複製により独自に産生されたものである、
を含んで成る、試料中の生細胞を検出するための方法を提供する。
図1で示された実施態様において、一本鎖ネガティブゲノムを有する、クラスVのウイルス調製物を、試料に適用する。
鎖選択的なMS2のRT−PCR実験
この実験は、鎖指向性(strand directed)RT−PCRを用いてcDNAが産生及び検出されることを示すために実施した。具体的には、この実験は、MS2バクテリオファージにおける、鎖特異的な2段階のRT−PCRを調べた。cDNAは、フォワードプライマーとリバースプライマーを別々に用いて、そして双方を組み合わせて用いて作製した。1つのタイプのRNAのみがMS2中に存在するので、1つのプライマーのみ(例えば、フォワード又はリバース)が、PCRにおいて増幅するであろうDNAを産生すると予測された。
実験で用いるプライマー及びプローブ配列を、表1に示す。双方のプライマーをDEPC処理水で希釈し、10μMの濃度とした。プローブも、2μMまで希釈した。第一のプローブを0.1×TEで希釈し、第二のプローブをDEPC処理水で希釈した。
DEPC処理H2O、ネガティブコントロール(ntc)
フォワードプライマーを用いて作製した、4×10倍の希釈系列のcDNA
リバースプライマーを用いて作製した、4×10倍の希釈系列のcDNA
両方のプライマーを用いて作製した、3×10倍の希釈系列のcDNA
MS2の精製DNA産物 1:1000希釈、ポジティブコントロール。
図2は、全ての試験試料に対する結果を示す。
図3は、フォワードプライマーを含む試験試料に対する結果を示す。
図4は、リバースプライマーを含む試験試料に対する結果を示す。
図5は、両方のプライマーを含む試験試料に対する結果を示す。
フォワードプライマーの使用は、PCRにおける検出に対して不十分なcDNAを生じさせた。しかし、リバースプライマーは、PCRにおける検出に対して十分なcDNAを産生した。両方のプライマーを用いた場合、cDNAはより高い効率で増幅され、PCR増幅においてより早くに検出された。
Claims (20)
- (i)試料と、生細胞に感染することのできるウイルスを、当該ウイルスが、任意のそのような生細胞内に感染し複製することができる条件下でインキュベートすること;
(ii)細胞中のウイルスの複製により得られる任意の核酸を検出すること、ただし、当該ウイルスが、マーカー配列を含むように改変された改変ウイルスである場合、検出される核酸は、細胞内でのウイルスの複製により独自に産生されたものである、
を含んで成る、試料中の生細胞を検出するための方法。 - 段階(ii)で検出される核酸が、ウイルス自体の中に含まれず、細胞内でのウイルスの複製により独自に産生される、請求項1に記載の方法。
- ウイルスがRNAウイルスである、請求項2に記載の方法。
- 段階(ii)において検出される核酸が、細胞中で、RNAウイルス内のRNA配列からの逆転写により産生されるcDNAである、請求項3に記載の方法。
- 段階(ii)の前に、試料をRNAseで処理する、請求項3又は4に記載の方法。
- ウイルスが天然のDNA又はRNAウイルスであり、段階(ii)において検出される核酸がウイルス内で生じ、試料中のこの核酸の量の増大が段階(ii)で検出される、請求項1に記載の方法。
- ウイルスが、天然のウイルスであり、細胞に特異的である、請求項1〜6のいずれか一項に記載の方法。
- 段階(ii)において検出される核酸が、増幅反応を用いて検出される、請求項1〜7のいずれか一項に記載の方法。
- 増幅反応が、ポリメラーゼ連鎖反応(PCR)である、請求項8に記載の方法。
- 段階(ii)における検出の前に、試料中の任意の無傷細胞を溶解する、請求項1〜9のいずれか一項に記載の方法。
- 試料が、食品試料又は臨床試料である、請求項1〜10のいずれか一項に記載の方法。
- 細胞が細菌細胞であり、ウイルスがバクテリオファージである、請求項1〜11のいずれか一項に記載の方法。
- 細胞が、E.コリ(E.coli)、サルモネラ(Salmonella)、リステリア(Listeria)、カンピロバクター(Campylobacter)、レジオネラ(Legionella)、マイコバクテリウム(Mycobacterium)、スタフィロコッカス(Staphylococcus)、又はストレプトコッカス(Streptococcus)である、請求項12に記載の方法。
- 請求項1〜13のいずれか一項に記載の特定の細胞を検出するための方法を実施するためのキットであって、ウイルス、及び細胞中でウイルスの複製により得られた核酸を検出するのに必要な1つ以上の試薬を含んで成るが、ただし、ウイルスが、マーカー配列を含むように改変された改変ウイルスである場合、その1つ以上の試薬が、細胞内でのウイルスの複製により独自に産生された核酸を検出するために必要である、前記キット。
- ウイルスが検出される核酸を含んでおらず、1つ以上の試薬が、細胞内でのウイルスの複製により独自に産生された核酸を検出するために必要である、請求項14に記載のキット。
- RNAウイルス、及びRNAウイルス内での配列の逆転写により得られるcDNAを検出するための1つ以上の試薬を含んで成る、請求項14又は15に記載のキット。
- ウイルスが、検出される核酸を含んで成る天然のDNA又はRNAウイルスであり、1つ以上の試薬がこの核酸の量の増大を検出するために必要である、請求項14に記載のキット。
- 1つ以上の試薬が、1組の増幅プライマーを含んで成る、請求項14〜17のいずれか一項に記載のキット。
- 汚染DNAを除去するために処理されたRNAウイルス調製物。
- ウイルスが、請求項19に記載のウイルス調製物である、請求項14〜16又は18のいずれか一項に記載のキット。
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PCT/GB2006/000551 WO2006087559A1 (en) | 2005-02-16 | 2006-02-16 | Method for detecting viable cells in a sample by using a virus |
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EP2092336B1 (en) * | 2006-11-29 | 2012-08-29 | Microsens Medtech Ltd | Capture of mycobacteria like micro-organisms |
CA2682921A1 (en) * | 2007-04-05 | 2008-10-16 | Sequella, Inc. | Improved methods and compositions for determining the pathogenic status of infectious agents |
EP2744916A4 (en) * | 2011-07-13 | 2015-06-17 | Primeradx Inc | MULTIMODAL METHODS FOR SIMULTANEOUS DETECTION AND QUANTIFICATION OF MULTIPLE NUCLEIC ACIDS IN A SAMPLE |
FR3108438A1 (fr) * | 2020-03-20 | 2021-09-24 | Prodose | Procede et dispositif de detection et de suivi de la presence, du developpement et de la propagation d’agents infectieux, notamment des bacteries et des virus |
CN112080475B (zh) * | 2020-07-30 | 2022-02-11 | 扬州大学 | 一种副溶血性弧菌噬菌体及其在检测副溶血性弧菌大流行株活细胞含量中的应用 |
CN112063732B (zh) * | 2020-09-17 | 2022-05-31 | 扬州大学 | 一种能够特异性识别阪崎肠杆菌存活细胞的快速定量检测方法及其引物 |
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US20080166700A1 (en) | 2008-07-10 |
ATE469239T1 (de) | 2010-06-15 |
DK1851325T3 (da) | 2010-08-30 |
AU2006215415A1 (en) | 2006-08-24 |
US8609375B2 (en) | 2013-12-17 |
US8071337B2 (en) | 2011-12-06 |
KR20070112796A (ko) | 2007-11-27 |
AU2006215415B2 (en) | 2011-01-06 |
DE602006014505D1 (de) | 2010-07-08 |
CA2597835A1 (en) | 2006-08-24 |
GB0503172D0 (en) | 2005-03-23 |
EP1851325A1 (en) | 2007-11-07 |
WO2006087559A1 (en) | 2006-08-24 |
CN101160410A (zh) | 2008-04-09 |
EP1851325B1 (en) | 2010-05-26 |
JP4903722B2 (ja) | 2012-03-28 |
CN101160410B (zh) | 2016-03-30 |
US20120141976A1 (en) | 2012-06-07 |
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