Optical forces for noninvasive cellular analysis.
Optical forces for noninvasive cellular analysis.
复制标题
用于非侵入性细胞分析的光学力。
作者:
Mark M. Wang;C. Schnabel;M. Chachisvilis;Rong Yang;Michael J Paliotti;L. Simons;Laura McMullin;Norbert Hagen;Kristie Lykstad;E. Tu;Luis M Pestana;Sudipto Sur;Haichuan Zhang;W. Butler;I. Kariv;P. Marchand
A novel, noninvasive measurement technique for quantitative cellular analysis is presented that utilizes the forces generated by an optical beam to evaluate the physical properties of live cells in suspension. In this analysis, a focused, near-infrared laser line with a high cross-sectional intensity gradient is rapidly scanned across a field of cells, and the interaction of those cells with the beam is monitored. The response of each cell to the laser depends on its size, structure, morphology, composition, and surface membrane properties; therefore, with this technique, cell populations of different type, treatment, or biological state can be compared. To demonstrate the utility of this cell analysis platform, we evaluated the early stages of apoptosis induced in the U937 cancer cell line by the drug camptothecin and compared the results with established reference assays. Measurements on our platform show detection of cellular changes earlier than either of the fluorescence-based Annexin V or caspase assays. Because no labeling or additional cell processing is required and because accurate assays can be performed with a small number of cells, this measurement technique may find suitable applications in cell research, medical diagnostics, and drug discovery.
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影响因子:
3.4
作者:
Karel Svoboda;Christoph F. Schmidt;Daniel Branton;Steven M. Block
通讯作者:
Karel Svoboda;Christoph F. Schmidt;Daniel Branton;Steven M. Block
影响因子:
6.7
作者:
Tadir,Y;Wright,WH;Vafa,O;Ord,T;Asch,RH;Berns,MW
通讯作者:
Berns,MW
影响因子:
--
作者:
Pasquale Patrizio;Yagang Liu;G. Sonek;M. W. Berns;Y. Tadir
通讯作者:
Pasquale Patrizio;Yagang Liu;G. Sonek;M. W. Berns;Y. Tadir
影响因子:
--
作者:
Darzynkiewicz,Z;Li,X;Bedner,E
通讯作者:
Bedner,E
影响因子:
3.4
作者:
LIU, Y;CHENG, DK;TROMBERG, BJ
通讯作者:
TROMBERG, BJ