Analysis of Fixed and Live Single Cells Using Optical Photothermal Infrared with Concomitant Raman Spectroscopy.
Analysis of Fixed and Live Single Cells Using Optical Photothermal Infrared with Concomitant Raman Spectroscopy.
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DOI:
10.1021/acs.analchem.0c04846
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发表时间:
2021-03-02
影响因子:
7.4
通讯作者:
Gardner P
中科院分区:
文献类型:
--
作者:
Spadea A;Denbigh J;Lawrence MJ;Kansiz M;Gardner P
This paper reports the first use of a novel completely optically based photothermal method (O-PTIR) for obtaining infrared spectra of both fixed and living cells using a quantum cascade laser (QCL) and optical parametric oscillator (OPO) laser as excitation sources, thus enabling all biologically relevant vibrations to be analyzed at submicron spatial resolution. In addition, infrared data acquisition is combined with concomitant Raman spectra from exactly the same excitation location, meaning the full vibrational profile of the cell can be obtained. The pancreatic cancer cell line MIA PaCa-2 and the breast cancer cell line MDA-MB-231 are used as model cells to demonstrate the capabilities of the new instrumentation. These combined modalities can be used to analyze subcellular structures in both fixed and, more importantly, live cells under aqueous conditions. We show that the protein secondary structure and lipid-rich bodies can be identified on the submicron scale.
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影响因子:
22
作者:
Chatterjee, Rusha;Pavlovetc, Ilia M.;Kuno, Masaru
通讯作者:
Kuno, Masaru
影响因子:
4.2
作者:
Bassan, Paul;Kohler, Achim;Gardner, Peter
通讯作者:
Gardner, Peter
影响因子:
4.2
作者:
Derenne, Allison;Verdonck, Magali;Goormaghtigh, Erik
通讯作者:
Goormaghtigh, Erik
DOI:
10.1146/annurev-anchem-071114-040435
发表时间:
2015-01-01
期刊:
ANNUAL REVIEW OF ANALYTICAL CHEMISTRY, VOL 8
影响因子:
--
作者:
Centrone, Andrea
通讯作者:
Centrone, Andrea
影响因子:
2.9
作者:
Benevides, JM;Chan, G;Thomas, GJ
通讯作者:
Thomas, GJ