Measuring single cell mass, volume, and density with dual suspended microchannel resonators.

Measuring single cell mass, volume, and density with dual suspended microchannel resonators.
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DOI:
10.1039/c3lc51022k
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发表时间:
2014-02-07
期刊:
影响因子:
6.1
通讯作者:
Manalis SR
Manalis SR
中科院分区:
工程技术1区
文献类型:
--
作者:
Bryan AK;Hecht VC;Shen W;Payer K;Grover WH;Manalis SR

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细胞尺寸(以体积或质量为单位)是细胞态的基本指标。比大小的密度要严格得多,即质量和体积之间的比率,即使体积和质量似乎保持恒定,也可以用来区分细胞种群。在这里,我们扩展了一种测量涉及悬浮微通道谐振(SMR)的细胞密度的方法。我们引入了一种新设备,即Dual SMR,作为一种高精度仪器,用于使用蛇形液体通道连接的两个谐振器测量单细胞质量,体积和密度。本文考虑的双重SMR设计证明了通道几何形状在确保适当混合和阻尼的微流体系统中的关键作用,该系统设计用于精确测量。我们使用双重SMR比较两种众所周知的癌细胞系的物理特性:人肺癌细胞H1650和小鼠淋巴细胞白血病细胞系L1210。
Cell size, measured as either volume or mass, is a fundamental indicator of cell state. Far more tightly regulated than size is density, the ratio between mass and volume, which can be used to distinguish between cell populations even when volume and mass appear to remain constant. Here we expand upon a previous method for measuring cell density involving a suspended microchannel resonator (SMR). We introduce a new device, the dual SMR, as a high-precision instrument for measuring single-cell mass, volume, and density using two resonators connected by a serpentine fluidic channel. The dual SMR designs considered herein demonstrate the critical role of channel geometry in ensuring proper mixing and damping of pressure fluctuations in microfluidic systems designed for precision measurement. We use the dual SMR to compare the physical properties of two well-known cancer cell lines: human lung cancer cell H1650 and mouse lymphoblastic leukemia cell line L1210.
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