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Three-dimensional mid-infrared tomographic imaging of endogenous and exogenous molecules in a single intact cell with subcellular resolution

Title data

Quaroni, Luca ; Obst, Martin ; Nowak, Marcus ; Zobi, Fabio:
Three-dimensional mid-infrared tomographic imaging of endogenous and exogenous molecules in a single intact cell with subcellular resolution.
In: Angewandte Chemie International Edition. Vol. 54 (2015) Issue 1 . - pp. 318-322.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.201407728

Abstract in another language

Microscopy in the mid-infrared spectral range provides detailed chemical information on a sample at moderate spatial resolution and is being used increasingly in the characterization of biological entities as challenging as single cells. However, a conventional cellular 2D imaging measurement is limited in its ability to associate specific compositional information to subcellular structures because of the interference from the complex topography of the sample. Herein we provide a method and protocols that overcome this challenge in which tilt-series infrared tomography is used with a standard benchtop infrared microscope. This approach gives access to the quantitative 3D distribution of molecular components based on the intrinsic contrast provided by the sample. We demonstrate the method by quantifying the distribution of an exogenous metal carbonyl complex through- out the cell and by reporting changes in its coordination sphere in different locations in the cell.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER135360
Institutions of the University: Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 03 Aug 2016 06:16
Last Modified: 03 Aug 2016 06:16
URI: https://eref.uni-bayreuth.de/id/eprint/33791