JP5654668B2 - Dnaシークエンシング用アレイの正確なアラインメント及びレジストレーションのための方法及びシステム - Google Patents
Dnaシークエンシング用アレイの正確なアラインメント及びレジストレーションのための方法及びシステム Download PDFInfo
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Description
「アンプリコン」は、ポリヌクレオチド増幅反応の産物を意味する。すなわち、それは、1以上の開始配列から複製されるポリヌクレオチドの集団である。アンプリコンは、限定するものではないが、ポリメラーゼ連鎖反応(PCR)、線形ポリメラーゼ反応、核酸配列に基づく増幅、環依存的増幅、及び同様の反応を含む、種々の増幅反応によって生成することができる(例えば、米国特許第4,683,195号;同第4,965,188号;同第4,683,202号;同第4,800159号;同第5,210,015号;同第6,174,670号;同第5,399,491号;同第6,287,824号、及び同第5,854,033号;並びに米国公開特許出願第2006/0024711号を参照されたい)。
バックグラウンド減算は、迷光を抑制するのに必要なプロセスである。蛍光システムにおける迷光は勾配を有することがある。これらの勾配は、フロースライド上の欠陥や染みの結果であることがある。したがって、バックグラウンド減算は常に必要である。
ピークは、3×3もしくは5×5の領域、又は(2n+1×2n+1)(式中、n=1、2、3、4....である)で規定されるより大きい領域のいずれかで最大となるピクセルを同定することによって見出される。選ばれるフィルターのサイズは、グリッドの固有のピッチと対象とするスポットのサイズの関数である。本目的のために、ピッチは、1スポット当たり4ピクセル以下であり、また、スポットサイズは、1〜10ピクセルを占めるので、3×3グリッド及び5×5グリッドが好ましい。
グリッドパターンの整列は、ヤコビアン変換の特性を利用する。これは、ポイントの抽象的グリッド405をスポットの実際のフィールド400にフィッティングさせることにより示される。
Claims (11)
- 基板上における生化学的部位の位置およびレジストレーションを確立するために、イメージング用の平らな表面を有する基板を準備するステップと;
画像中で前記基板上の生化学的部位に対応するフィールドスポットを検出するステップと;
グリッドオフセットを決定するために、二次元グリッドと前記基板の平らな表面上の生化学的部位のフィールドスポットとのアラインメントを行うステップと;並びに
前記グリッドのポイントとフィールド内の既知の位置とのレジストレーションを行うステップとを含み、
前記レジストレーションを行うステップは、前記フィールドスポットを前記基板上のフィールドスポットの第一の既知の欠失パターンと交差相関させて、フィールド内の絶対位置を決定するステップを含む、方法。 - 前記欠失パターンは疑似ランダムとなるように選ばれる、請求項1に記載の方法。
- 前記レジストレーションを行うステップは、前記フィールドスポットを、前記基板上のフィールドスポットの位置を特定する第二の既知の欠失パターンとさらに交差相関させるステップを含む、請求項1に記載の方法。
- 前記アラインメントを行うステップは、各グリッドポイントと各フィールドスポットの間で最小二乗距離を有する試験された組合せをフィールドスポットのパターン中に見出すために、回転、スケール、x−オフセット、及びy−オフセットの様々な組合せを繰り返し試験するステップを含む、請求項1に記載の方法。
- 前記アラインメントを行うステップは、
強度群によってフィールドスポットを収集するステップ;
群平均スポット輝度を最も近いグリッドポイントからの群平均距離に対してプロットするステップ;及び
前記最も近いグリッドポイントからの群平均距離が閾値未満となる群の全スポットに対して精密フィッティングする工程を繰り返すステップを含む、請求項1に記載の方法。 - 基板の表面上のスポットの二次元の周期的アレイ内のスポットに位置する複数の個別の表面部位を有する固体平面基板を含み、
前記複数の表面部位は、光学的に解像可能な、生化学実験をサポートするように修飾された表面部位と、修飾されていない欠失された表面部位とを含み、
前記欠失された表面部位は、少なくとも1つの既知の欠失パターンに従って前記アレイから欠失させられている、装置。 - 前記欠失パターンは疑似ランダムである、請求項6に記載の装置。
- 前記部分は約1%〜約3%である、請求項6に記載の装置。
- 前記生化学実験は、DNAナノボールを用いるコンビナトリアルプローブ−アンカーライゲーションを含む、請求項6に記載の装置。
- 個々の表面部位であって、生化学実験をサポートするように修飾されている、表面部位を有し、前記部位は、基板の表面上のスポットの二次元の周期的アレイ内のスポットに位置し、かつそうでなければ存在したであろう前記スポットの部分は、既知の欠失パターンに従って前記アレイから欠失させられている、固体平面基板を提供するステップ;
前記部位で生化学実験を行うステップ;
前記生化学実験の画像を取得するステップ;
前記画像を前記欠失パターンと交差相関させて、前記スポットの絶対位置を決定するステップ;及び
前記画像をサブピクセル精度で観察して、前記生化学実験についての情報を引き出すステップを含む、方法。 - 前記画像を取得するステップは、前記スポットの正確な位置に基づいて、隣接ピクセルからの出力の寄与に重み付けするステップを含む、請求項10に記載の方法。
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2011
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WO2011137183A1 (en) | 2011-11-03 |
JP2015042185A (ja) | 2015-03-05 |
US9359641B2 (en) | 2016-06-07 |
EP2563953A4 (en) | 2015-06-03 |
CN103025927A (zh) | 2013-04-03 |
US20150080231A1 (en) | 2015-03-19 |
JP6042859B2 (ja) | 2016-12-14 |
US20110268347A1 (en) | 2011-11-03 |
EP3043319A1 (en) | 2016-07-13 |
JP2013527848A (ja) | 2013-07-04 |
CN103025927B (zh) | 2015-12-16 |
EP2563953A1 (en) | 2013-03-06 |
US8774494B2 (en) | 2014-07-08 |
SG184963A1 (en) | 2012-11-29 |
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