JP6894480B2 - 単一細胞の迅速かつ正確な分注、視覚化及び解析のための方法 - Google Patents
単一細胞の迅速かつ正確な分注、視覚化及び解析のための方法 Download PDFInfo
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Description
Persing, David H., “In Vitro Nucleic Acid Amplification Techniques”、Principles and Applications (Persing et al., Eds.), pp. 51-87 (American Society for Microbiology, Washington, DC (1993))を参照せよ。
(例1)マルチウェルチップにおける単一癌細胞の単離
Wafergenチップ内の単一及び複数細胞を染色し、分注かつ画像化する陽性及び陰性対照抗体(Ab)を含む細胞表面マーカの使用の一例を図12及び図12にそれぞれ示す。図12及び図13は、組織培養フラスコからのトリプシン放出後の36ウェル視野(FOV)ウェルレベル画像、〜30000個のヒト乳癌SK−BR−3細胞、文献からHER2/neu/ERBB2陽性であることが強く知られる不死化培養細胞から始まる再懸濁、染色、及びイメージ化を示している。
この例では3つのサンプルが調べられた。2つのサンプルは単一種から構成されており、ヒトU87−MG−(赤色蛍光タンパク質陽性)細胞、又はマウスNIH/373細胞であった。第3の試料は、個々の単一種のサンプルの混合物により構成されていた。細胞は、WaferGen SMARTCHIPチップのウェルにおける細胞数のポアソン分布を可能にするMSND(マルチサンプル・ナノディスペンサ)を用いて染色され、分注された。そのアレイは後に画像化され、第1及び第2鎖cDNAに加工されるべき単一細胞含有セル及び他の検体含有セルが選択された。cDNAは、先に記載した方法を用いて、チップから取り出された。cDNAは、NGS増幅及び読み出しに最適なDNA増幅産物「ライブラリ」を獲得するために、チップ外でPCR増幅された。サンプルライブラリからのシークエンス・リードは、第一に細胞及びRTバッファ選択プロセスが特定のウェルを選択することができたこと、第二に混合した細胞サンプルから選択したウェルがシークエンス・リードを1つの種のみへのマッピングを引き起こすことを確認するために、特定のサンプル(例えば種ゲノム)にマッピングされ得る。実際上、後者は単一細胞占有率及びシステムの分割能力を計算するために使用することができる。
Claims (21)
- (a)マルチウェルデバイス内の複数のウェルの夫々に、液体分注システムを用いて、分注量に平均してX個の細胞が存在するような濃度にて細胞懸濁液を分注し、
(b)前記分注の前及び/又は後に、前記細胞の少なくとも一部を第1の検出可能な標識で標識し、
(c)前記複数のウェルのうちの少なくとも一部の夫々に存在する細胞の数を判定し、
(d)各ウェルに存在すると判定された細胞の数に基づき、前記複数のウェルのうちの1又は複数に試薬を選択的に分注する
方法。 - 前記Xは、1個から20個の細胞である
請求項1に記載の方法。 - 前記Xは、1である
請求項1に記載の方法。 - 前記細胞懸濁液が分注されたウェルに存在する細胞の数は、ゼロ個を含む
請求項1に記載の方法。 - 前記細胞懸濁液が分注されたウェルに存在する細胞の数は、1個以上、40個以下を含む
請求項1に記載の方法。 - (d)更に、X細胞未満と判定された前記ウェルの少なくとも一部に、前記細胞懸濁液の分注量を分注する
請求項1に記載の方法。 - (e)更に、X細胞以上と判定されたウェルの少なくとも一部に、前記分注量に等しいが細胞のない第1の追加量を分注する
請求項6に記載の方法。 - (e)更に、X細胞未満を有すると予め判定された前記ウェルの夫々が有する細胞の数を判定する
請求項6に記載の方法。 - (f)更に、X細胞未満を有すると判定された前記ウェルに、前記細胞懸濁液の分注量を分注する
請求項6に記載の方法。 - (g)更に、X細胞以上と判定されたウェルの少なくとも一部に、前記分注量に等しいが細胞のない第2の追加量を分注する
請求項9に記載の方法。 - 更に、前記分注するステップ又は前記判定するステップの前及び/又は後に、前記細胞の少なくとも一部に第2の検出可能な標識で標識する
請求項1に記載の方法。 - 更に、前記複数のウェルのうちの何れかに前記第2の検出可能な標識を有する細胞が含まれるか否かを判定する
請求項11に記載の方法。 - 前記判定するステップは、前記複数のウェルの少なくとも一部の夫々における第1の検出可能な標識を視覚化するステップを含む
請求項1に記載の方法。 - 前記判定するステップは、画像取得システムを用いて、前記複数のウェルの少なくとも一部の第1画像を取得するステップを含む、ここで、前記第1画像は、該第1画像中のウェルの夫々に現れる細胞の数を示す
請求項1に記載の方法。 - 前記画像取得システムは、拡大レンズに連結されたカメラを備える
請求項14に記載の方法。 - 前記画像取得システムは、コンピュータを更に備え、該コンピュータは、コンピュータプロセッサ、コンピュータメモリ、及び画像解析ソフトウェアを含む
請求項15に記載の方法。 - 前記画像解析ソフトウェアは、前記第1画像を解析し、i)ウェルがX個未満の細胞を含む第1のリスト、ii)ウェルがX個の細胞を含む第2のリスト、iii)ウェルがX個より多くの細胞を含む第3のリストを生成するように構成されている
請求項16に記載の方法。 - 前記画像解析ソフトウェアは、前記液体分注システムに対し、前記第1のリストのウェルの夫々に分注量を分注するための命令を生成する
請求項17に記載の方法。 - (d)更に、前記第1画像に基づき、X個未満の細胞を有するウェルの少なくとも一部に分注量を分注する
請求項17に記載の方法。 - (e)更に、分注の前にX個未満の細胞を有するウェルの少なくとも一部の第2画像を取得する。ここで、前記第2画像は、前記第1の検出可能な標識を介して、分注の前にX個未満の細胞を有するウェルの夫々に存在する細胞の数を示す
請求項19に記載の方法。 - (a)複数のウェルを備えるマルチウェルデバイス、
(b)複数のウェルの夫々に分注量を分注し、前記複数のウェルの夫々に存在すると判定された細胞の数に基づいて試薬を選択的に分注するように構成された液体分注システム、及び
(c)(i)分注量に平均してX個の細胞が存在するような濃度にて細胞を含む細胞懸濁液と、(ii)平均してX個の細胞を含むマルチウェルデバイスにおける細胞に液体を分注するための前記液体分注システムに対する命令を提供する分注マップファイルとから選択された少なくとも1つの要素
を備えるシステム。
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US11125752B2 (en) | 2021-09-21 |
JP2018506977A (ja) | 2018-03-15 |
EP3259602B9 (en) | 2021-05-19 |
US20200225236A1 (en) | 2020-07-16 |
CN107407685A (zh) | 2017-11-28 |
DK3259602T3 (da) | 2021-02-15 |
CN107407685B (zh) | 2021-08-03 |
US20210382056A1 (en) | 2021-12-09 |
WO2016134342A1 (en) | 2016-08-25 |
EP3259602A4 (en) | 2018-07-11 |
EP3259602A1 (en) | 2017-12-27 |
EP3259602B1 (en) | 2020-11-18 |
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