JP7223736B2 - 反応処理装置および反応処理方法 - Google Patents
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Description
図1(a)および(b)は、本発明の第1実施形態に係る反応処理装置で使用可能な反応処理容器10を説明するための図である。図1(a)は、反応処理容器10の平面図であり、図1(b)は、反応処理容器10の正面図である。
図5(a)および(b)は、本発明の第2実施形態に係る反応処理装置で使用可能な反応処理容器110を説明するための図である。図5(a)は、反応処理容器110の平面図であり、図5(b)は、反応処理容器110の正面図である。
図8は、本発明の第3実施形態に係る反応処理装置230を説明するための模式図である。本第3実施形態に係る反応処理装置230では、反応処理容器は第2実施形態で説明した反応処理容器110(図5参照)と同じものを使用するので、同一の構成要素には同じ符号を付し、重複する説明を適宜省略する。また、反応処理装置230における温度制御システムおよび蛍光検出器についても第2実施形態で説明した温度制御システム132および蛍光検出器150と同じものを使用するため、同一の構成要素には同じ符号を付し、重複する説明を適宜省略する。本発明の第3実施形態に係る反応処理装置230は、送液システムの構成と、それに基づく反応処理方法が第2実施形態と異なる。
Claims (8)
- 試料にサーマルサイクルを与えることによって該試料の反応処理を行う反応処理装置であって、
基板と、前記基板に形成された試料が移動可能な流路と、該流路の両端に設けられた一対の連通口とを有する反応処理容器と、
前記一対の連通口に接続されて前記流路内の試料を移動させるための一対の送液用ポンプと、
前記流路の一部を異なる温度に維持される複数の温度領域とするための温度制御部と、
前記流路内を移動する試料からの蛍光を検出するための蛍光検出器と、
前記蛍光検出器による蛍光の変化に基づいて試料の通過を認識して前記送液用ポンプを制御する制御部と、
を備え、
前記制御部は、試料にサーマルサイクルを与えるために、前記一対の送液用ポンプのいずれかを作動することによって試料を前記複数の温度領域間で往復的に移動させ、且つ、前記一対の送液用ポンプのいずれもを停止することによって試料を温度領域内に停止させ、
前記複数の温度領域は、試料に含まれるDNAに対して変性反応を生じさせる第1温度領域と、アニーリングおよび伸長反応を生じさせる第2温度領域と、を含み、
前記一対の連通口は、前記第1温度領域側の第1連通口と、前記第2温度領域側の第2連通口と、を含み、
前記一対の送液用ポンプは、前記第1連通口に接続される第1送液用ポンプと、前記第2連通口に接続される第2送液用ポンプと、を含み、
前記蛍光検出器は、前記第1温度領域と前記第2温度領域とを接続する、一定の流路内を通過する試料からの蛍光を検出するように配置され、
試料が前記第1温度領域から前記第2温度領域に移動するとき、前記流路内における試料の両側の空間のうち前記第2連通口側の空間の圧力は、前記第1連通口側の空間の圧力より低く、且つ、当該反応処理装置の周辺環境の気圧より高く、
試料が前記第2温度領域から前記第1温度領域に移動するとき、前記流路内における試料の両側の空間のうち前記第1連通口側の空間の圧力は、前記第2連通口側の空間の圧力より低く、且つ、当該反応処理装置の周辺環境の気圧より高く、
試料が前記第1温度領域または前記第2温度領域に停止するとき、前記流路内における試料の両側の空間の圧力は等しく、且つ、当該反応処理装置の周辺環境の気圧より高い、
ことを特徴とする反応処理装置。 - 前記制御部は、前記蛍光検出器により検出された蛍光信号がゼロまたはバックグラウンドレベルから増加し、再びゼロまたはバックグラウンドレベルに低下する出力変動によって試料の通過を認識することを特徴とする請求項1に記載の反応処理装置。
- 前記反応処理容器は、前記流路を封止するための封止フィルムを含むことを特徴とする請求項1または2に記載の反応処理装置。
- 前記送液用ポンプは、停止時に一次側と二次側の圧力が等しくなることを特徴とする請求項1から3のいずれかに記載の反応処理装置。
- 前記送液用ポンプは、マイクロブロアポンプであることを特徴とする請求項1から4のいずれかに記載の反応処理装置。
- 励起光および蛍光の波長が異なる複数の前記蛍光検出器を流路に沿って備えることを特徴とする請求項1から5のいずれかに記載の反応処理装置。
- 前記温度領域に対応する流路は、直線部と曲線部とを含むことを特徴とする請求項1から6のいずれかに記載の反応処理装置。
- 基板と、前記基板に形成された試料が移動可能な流路と、該流路の両端に設けられた一対の連通口とを有する反応処理容器に試料を導入するステップと、
前記反応処理容器を一対の送液用ポンプを備える反応処理装置にセットするステップと、
前記一対の連通口に前記一対の送液用ポンプを接続するステップと、
前記流路の一部を異なる温度に維持される複数の温度領域とするステップと、
試料にサーマルサイクルを与えるために、前記一対の送液用ポンプのいずれかを作動することによって試料を前記複数の温度領域間で往復的に移動させ、且つ、前記一対の送液用ポンプのいずれもを停止することによって試料を温度領域内に停止させるステップと、
反応中に蛍光検出器を用いて試料からの蛍光信号をモニタリングすることによって反応処理の進捗および終端をリアルタイムで把握するステップと、
を備え、
前記複数の温度領域は、試料に含まれるDNAに対して変性反応を生じさせる第1温度領域と、アニーリングおよび伸長反応を生じさせる第2温度領域と、を含み、
前記一対の連通口は、前記第1温度領域側の第1連通口と、前記第2温度領域側の第2連通口と、を含み、
前記一対の送液用ポンプは、前記第1連通口に接続される第1送液用ポンプと、前記第2連通口に接続される第2送液用ポンプと、を含み、
前記蛍光検出器は、前記第1温度領域と前記第2温度領域とを接続する、一定の流路内を通過する試料からの蛍光を検出するように配置され、
前記試料を移動および停止させるステップにおいて、前記蛍光検出器により検出された蛍光の変化に基づいて試料の通過を認識して前記一対の送液用ポンプを制御し、
試料を前記第1温度領域から前記第2温度領域に移動させるとき、前記流路内における試料の両側の空間のうち前記第2連通口側の空間の圧力は、前記第1連通口側の空間の圧力より低く、且つ、当該反応処理装置の周辺環境の気圧より高く、
試料を前記第2温度領域から前記第1温度領域に移動させるとき、前記流路内における試料の両側の空間のうち前記第1連通口側の空間の圧力は、前記第2連通口側の空間の圧力より低く、且つ、当該反応処理装置の周辺環境の気圧より高く、
試料を前記第1温度領域または前記第2温度領域に停止させるとき、前記流路内における試料の両側の空間の圧力は等しく、且つ、当該反応処理装置の周辺環境の気圧より高い、
ことを特徴とする反応処理方法。
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