JP2011521640A - 超音波細胞除去方法 - Google Patents
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Abstract
Description
図7は本発明の方法の実施の形態によって処理する前の多層フラスコのガス透過性ポリスチレン膜において増殖したCHOK1細胞の接着単層の顕微鏡写真である。また、図8は本発明の方法の実施の形態によって処理した後の多層フラスコのガス透過性ポリスチレン膜において増殖したCHOK1細胞の接着単層の顕微鏡写真である。本発明の方法による処理を行う前に細胞増殖面に接着していたほとんどの細胞は、その処理後、もはや細胞増殖面に接着していないことを図7及び8は示している。図8は処理後細胞培養面に残留付着している一部の丸い細胞を示しているが、ほとんどの細胞は培養面から切り離され小フラスコ内の残留液に浮遊している。
多層フラスコ内の10%のウシ胎仔血清を含むダルベッコ変法イーグル培地(DMEM培地)において、37℃にて単層が形成されるまでCHOK1接着細胞を培養した。
培地を除去しPBSによって洗浄した後、多層フラスコを横臥位にして超音波ホーンの真下の治具上に載置した。超音波周波数を20kHzとし振幅を20%とした。ブランソン200超音波溶接機によって、多層フラスコの一方の側に30秒間パルスを発生させ、その後反転させもう一方の側に30秒間パルスを発生させた。超音波パルスを付与する前後の細胞を光学顕微鏡によって視覚化することにより、接着面から細胞が切り離されたか否かを判定した。容器から細胞を排出し生存率を測定したところ98%であった。
超音波処理を施した後、多層フラスコを個々の小フラスコ、即ち、個々の細胞培養チャンバーに分解した。切り離された細胞を容器から除去した後、クリスタルバイオレットによって残留接着細胞を染色した。容器にクリスタルバイオレットを加え、容器を揺動することにより細胞培養面にコーティングを施した。所定の場所に染料を5分間放置し、その後容器を水洗いした。容器を乾燥させてから層を引き離して個々の層が見えるようにした。超音波処理によって、多層フラスコの可撓ガス透過膜(細胞培養面)からは細胞が除去された一方、小フラスコの対向する硬質プラスチック側に増殖した細胞は除去できなかった(データ表示せず)。
111 細胞増殖チャンバー
113 底面/ガス透過膜
115 上面
117 細胞
118 気管空域
119 支持体
127 培地
300 細胞培養装置
310 トランスジューサ
315 接続アーム
320 ホーン
335 蓋
340 固定治具
350 ベースプレート
360 測定装置
370 コンピュータ
400 多層フラスコ
425 音響結合装置
450 ベースプレート
Claims (10)
- 多層細胞培養容器から細胞を除去する超音波処理方法であって、該多層細胞培養容器に超音波エネルギー処理を施す工程を有して成ることを特徴とする方法。
- 超音波エネルギー処理を施す間、前記多層細胞培養容器が液体を含んでいることを特徴とする請求項1記載の方法。
- 超音波エネルギー処理を施す前に、前記多層細胞培養容器から液体を除去することを特徴とする請求項1記載の方法。
- 前記多層細胞培養容器が閉じた多層細胞培養容器であることを特徴とする請求項1記載の方法。
- 前記多層細胞培養容器が開放した多層細胞培養容器であることを特徴とする請求項1記載の方法。
- 前記多層細胞培養容器に超音波エネルギー処理を施す工程が、超音波発生器又は超音波発生器のホーンに対して該多層細胞培養容器を保持するように構成配置された音響カプラを介して、該多層細胞培養容器に超音波エネルギー処理を施す工程であることを特徴とする請求項1記載の方法。
- 前記音響カプラが前記超音波発生器と前記多層細胞培養容器との間にゴムパッドを有して成ることを特徴とする請求項6記載の方法。
- 前記超音波エネルギーが10〜30kHzであることを特徴とする請求項1記載の方法。
- 前記超音波エネルギーを15%〜30%の振幅にて10秒〜90秒間加えることを特徴とする請求項8記載の方法。
- 多層細胞培養容器から細胞を除去する超音波処理方法であって、
(a)多層細胞培養容器内で細胞を増殖させる工程と、
(b)前記多層細胞培養容器に超音波エネルギー処理を施す工程と、
(c)分離した細胞を前記多層細胞培養容器から除去する工程と
を有して成ることを特徴とする方法。
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US (1) | US8114646B2 (ja) |
EP (1) | EP2291508A1 (ja) |
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JP2013172690A (ja) * | 2012-02-27 | 2013-09-05 | National Institute Of Advanced Industrial Science & Technology | 細胞分離用接着基板 |
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JP2019030260A (ja) * | 2017-08-08 | 2019-02-28 | 学校法人慶應義塾 | 細胞生産方法及び細胞生産装置 |
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-
2009
- 2009-05-19 US US12/468,590 patent/US8114646B2/en active Active
- 2009-05-19 WO PCT/US2009/003092 patent/WO2009145875A1/en active Application Filing
- 2009-05-19 EP EP09755238.4A patent/EP2291508A1/en not_active Withdrawn
- 2009-05-19 JP JP2011511609A patent/JP2011521640A/ja active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013172690A (ja) * | 2012-02-27 | 2013-09-05 | National Institute Of Advanced Industrial Science & Technology | 細胞分離用接着基板 |
WO2016047368A1 (ja) * | 2014-09-26 | 2016-03-31 | 株式会社Screenホールディングス | 細胞剥離装置および細胞剥離方法 |
JP2019030260A (ja) * | 2017-08-08 | 2019-02-28 | 学校法人慶應義塾 | 細胞生産方法及び細胞生産装置 |
Also Published As
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US20090298153A1 (en) | 2009-12-03 |
EP2291508A1 (en) | 2011-03-09 |
US8114646B2 (en) | 2012-02-14 |
WO2009145875A1 (en) | 2009-12-03 |
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