JP7339696B2 - 生物学的実体の選択的捕捉のためのマイクロ流体装置 - Google Patents
生物学的実体の選択的捕捉のためのマイクロ流体装置 Download PDFInfo
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Description
・ 高感度: 実体/表面相互作用の頻度が高いことによる、生物学的実体のより高い捕捉効率。
・ 目詰まりしないチャネル動作: 実体/表面相互作用の増加は、ピラー間の距離を、捕捉効率を損なうことなく、標的実体の特性寸法の2~3倍の典型的な値の代わりに、標的実体の特性寸法の少なくとも3~10倍まで増加させることを可能にする。ピラー距離が広いほど、試料がチャネルを通過する間にチャネルが詰まる可能性が低くなる。これは、高濃度懸濁液で作業する場合に特に重要である。
・ 設計の容易さ: 均一に分布したピラーパターンにより設計入力(上の)パラメータが大幅に低減された、簡略化された設計手順。
・ 自由度及び費用効果の高い装置製造: より広いピラー間距離が、様々なポリマー成形オプションを含む自由度(versatility,多用途性)を製造プロセスにもたらす。
マイクロ流体生物学的実体分離促進装置のより分かりやすい説明のために準備された各図に示す構成要素には別個に番号が付されており、各番号の説明は以下の通りである。
2.蛇行マイクロ流体チャネル
3.捕捉容積
4.菱形格子
5.翼弦線
6.対称軸
7.抗体
8.標的生物学的実体(標的となる生物学的実体)
9.標的生物学的実体(標的となる生物学的実体)を搬送する流線
10.障害物を含む直線チャネル
11.上流
12.下流
13.楕円セグメント
14.翼弦
15.長軸(Major axis)
16.短軸(Minor axis)
17.流入部
18.流出部
19.流れ方向
20.楕円セグメントの列(シーケンス)
21.先行する楕円セグメント
22.後続の楕円セグメント
23.直線マイクロチャネル
24.入口
25.出口
d.菱形の辺の長さ
α.迎え角
Harb W., Fan A., Tran T., Danila D.C., Keys D., Schwartz M., Ionescu-Zanetti C., Mutational Analysis of Circulating Tumor Cells Using a Novel Microfluidic Collection Device and qPCR Assay, Translational Oncology Vol. 6, No. 5, 2013.
Winer-Jones J.P., Vahidi B., Arquilevich N., Fang C., Ferguson S., Harkins D., Hill C., Klem E., Pagano P.C., Peasley C., Romero J., Shartle R., Vasko R.C., Strauss W.M., Dempsey P.W., Circulating Tumor Cells: Clinically Relevant Molecular Access Based on a Novel CTC Flow Cell, PLOS ONE, Vol 9, Issue 1, e86717, 2014.
Martin G., Soper S., Witek M., Yeh J.J., (2016). United States Patent No. US 9250242B2.
Zhongliang T., Bhatt R.S., Tsinberg P., (2006). United States Patent No. US 2006/0160243A1.
Skelley A., Smirnov D., Dong Y., Merdek K.D., Sprott K., Carney W., Jiang C., Huang R., Lupascu I., (2014). United States Patent No. US 2014/0154703A1.
Fuchs M., Toner M., (2007). United States Patent No. US 2007/0026417A1.
(参考文献 以上)
Claims (8)
- 標的となる生物学的実体の選択的捕捉のためのマイクロ流体装置であって、
a) 対称水中翼形状をしたピラー(1)のアレイであって、前記ピラーの幾何学的中心は菱形格子(4)を形成し、前記格子(4)は、当該格子内の菱形の辺の長さ、すなわち、2つの隣り合う対称水中翼形状ピラー(1)の幾何学的中心間のユークリッド距離によって特徴付けられ、前記ピラーの翼弦線(5)が互いに平行である、対称水中翼形状をしたピラー(1)のアレイと、
b) 障害物として作用する前記対称水中翼形状ピラー(1)を含んでなる蛇行マイクロ流体チャネル(2)と、
c) 捕捉容積(3)と、
を備え、
前記対称水中翼形状ピラー(1)の表面は、標的となる生物学的実体の捕捉に適した少なくとも一種類の抗体(7)でコーティングされており、
前記捕捉容積(3)は、前記蛇行マイクロ流体チャネルからの前記対称水中翼形状ピラーのアレイのブール減算によって定義される、ことを特徴とするマイクロ流体装置。 - 前記蛇行マイクロ流体チャネル(2)は、楕円の長軸又は短軸のいずれかに平行な翼弦によって特徴付けられる楕円セグメント(13,21,22)を含み、
前記翼弦は、流入部(17)と流出部(18)とに分割され、標的となる生物学的実体は、それぞれ前記流入部(17)及び前記流出部(18)を通って前記楕円セグメントに出入りする、ことを特徴とする請求項1に記載のマイクロ流体装置。 - 前記流入部(17)の長さが前記流出部(18)と等しい、請求項2に記載のマイクロ流体装置。
- 前記蛇行マイクロ流体チャネルは、
後続の楕円セグメント(22)が、先行する楕円セグメント(21)をその翼弦を中心として反転させると共に前記翼弦に沿って前記流入部(17)に等しい距離だけ平行移動させることによって形成されるところの、互いに接続された楕円セグメント(21,22)の列を含んでなる、
ことを特徴とする請求項2又は3に記載のマイクロ流体装置。 - 当該マイクロ流体装置は、少なくとも1つのチャネルユニットを備えており、このユニットは、2つの楕円セグメント(21,22)からなり、
これら楕円セグメントにおいては、先行する楕円セグメント(21)の流出部(18)が、直線マイクロチャネル(23)を介して後続の楕円セグメント(22)の流入部(17)に接続されてなると共に、前記直線マイクロチャネルが対称水中翼形状ピラーのアレイを含んでいる、ことを特徴とする請求項2又は3に記載のマイクロ流体装置。 - 楕円セグメント(13,21,22)が半円形である、ことを特徴とする請求項2~5のいずれか一項に記載のマイクロ流体装置。
- 隣り合う対称水中翼形状ピラー間の距離が、前記標的となる生物学的実体の特性寸法の3~10倍である、ことを特徴とする請求項1~6のいずれか一項に記載のマイクロ流体装置。
- 前記標的となる生物学的実体は、循環性腫瘍細胞、希少細胞、末梢血細胞、又はそれらの任意の組み合わせからなる群から選択される、ことを特徴とする請求項1~7のいずれか一項に記載のマイクロ流体装置。
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PCT/TR2018/050934 WO2020139211A1 (en) | 2018-12-28 | 2018-12-28 | A microfluidic device for selective capture of biological entities |
TRPCT/TR2018/050934 | 2018-12-28 | ||
PCT/TR2019/050649 WO2020139229A2 (en) | 2018-12-28 | 2019-08-06 | A microfluidic device for selective capture of biological entities |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20170197214A1 (en) | 2002-09-27 | 2017-07-13 | The General Hospital Corporation | Microfluidic Device For Cell Separation And Uses Thereof |
US20170248508A1 (en) | 2015-08-24 | 2017-08-31 | Gpb Scientific, Llc | Methods and devices for multi-step cell purification and concentration |
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US8158410B2 (en) | 2005-01-18 | 2012-04-17 | Biocept, Inc. | Recovery of rare cells using a microchannel apparatus with patterned posts |
US20070026417A1 (en) | 2005-07-29 | 2007-02-01 | Martin Fuchs | Devices and methods for enrichment and alteration of circulating tumor cells and other particles |
US9433880B2 (en) * | 2006-11-30 | 2016-09-06 | Palo Alto Research Center Incorporated | Particle separation and concentration system |
US20140154703A1 (en) | 2011-01-06 | 2014-06-05 | Alison Skelley | Circulating tumor cell capture on a microfluidic chip incorporating both affinity and size |
JP6404824B2 (ja) | 2012-11-09 | 2018-10-17 | エフ.ホフマン−ラ ロシュ アーゲーF. Hoffmann−La Roche Aktiengesellschaft | 循環腫瘍細胞のインビトロでの捕捉および解析 |
WO2015058206A1 (en) * | 2013-10-18 | 2015-04-23 | The General Hosptial Corporation | Microfluidic sorting using high gradient magnetic fields |
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Patent Citations (2)
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US20170197214A1 (en) | 2002-09-27 | 2017-07-13 | The General Hospital Corporation | Microfluidic Device For Cell Separation And Uses Thereof |
US20170248508A1 (en) | 2015-08-24 | 2017-08-31 | Gpb Scientific, Llc | Methods and devices for multi-step cell purification and concentration |
Non-Patent Citations (1)
Title |
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Adv. Clin. Chem.,2016年04月21日,Vol.75,pp.1-31 |
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AU2019416853B2 (en) | 2022-09-15 |
IL284277A (en) | 2021-08-31 |
WO2020139211A1 (en) | 2020-07-02 |
EP3873670A4 (en) | 2021-12-29 |
WO2020139229A2 (en) | 2020-07-02 |
WO2020139229A3 (en) | 2020-07-30 |
SG11202106720SA (en) | 2021-07-29 |
EP3873670B1 (en) | 2023-10-18 |
EP3873670A2 (en) | 2021-09-08 |
EP3873670C0 (en) | 2023-10-18 |
KR20210110308A (ko) | 2021-09-07 |
AU2019416853A1 (en) | 2021-07-15 |
US20220072552A1 (en) | 2022-03-10 |
KR102666927B1 (ko) | 2024-05-20 |
JP2022526065A (ja) | 2022-05-23 |
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