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
中科院分区:
文献类型:
--
作者:
Bryan AK;Hecht VC;Shen W;Payer K;Grover WH;Manalis SR
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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