Tissue imaging using nanospray desorption electrospray ionization mass spectrometry.
Tissue imaging using nanospray desorption electrospray ionization mass spectrometry.
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DOI:
10.1021/ac2021322
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发表时间:
2012-01-03
影响因子:
7.4
通讯作者:
Semmes, O. John
中科院分区:
文献类型:
--
作者:
Laskin, Julia;Heath, Brandi S.;Roach, Patrick J.;Cazares, Lisa;Semmes, O. John
Ambient ionization imaging mass spectrometry is uniquely suited for detailed spatially-resolved chemical characterization of biological samples in their native environment. However, the spatial resolution attainable using existing approaches is limited by the ion transfer efficiency from the ionization region into the mass spectrometer. Here we present a first study of ambient imaging of biological samples using nanospray desorption ionization (nano-DESI). Nano-DESI is a new ambient pressure ionization technique that uses minute amounts of solvent confined between two capillaries comprising the nano-DESI probe and the solid analyte for controlled desorption of molecules present on the substrate followed by ionization through self-aspirating nanospray. We demonstrate highly sensitive spatially resolved analysis of tissue samples without sample preparation. Our first proof-of-principle experiments indicate the potential of nano-DESI for ambient imaging with a spatial resolution of better than 12 μm. The significant improvement of the spatial resolution offered by nano-DESI imaging combined with high detection efficiency will enable new imaging mass spectrometry applications in clinical diagnostics, drug discovery, molecular biology, and biochemistry.
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影响因子:
4.2
作者:
Roach, Patrick J.;Laskin, Julia;Laskin, Alexander
通讯作者:
Laskin, Alexander
影响因子:
7.4
作者:
Galhena, Asiri S.;Harris, Glenn A.;Fernandez, Facundo M.
通讯作者:
Fernandez, Facundo M.
DOI:
10.1016/j.jasms.2007.12.003
发表时间:
2008-04-01
影响因子:
3.2
作者:
Manicke, Nicholas E.;Wiseman, Justin M.;Cooks, R. Graham
通讯作者:
Cooks, R. Graham
影响因子:
48
作者:
Cornett, Dale S.;Reyzer, Michelle L.;Caprioli, Richard M.
通讯作者:
Caprioli, Richard M.
影响因子:
6.7
作者:
Heeren, R. M. A.;McDonnell, L. A.;Piersma, S. R.
通讯作者:
Piersma, S. R.