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Quantitative determination and subcellular imaging of Cu in single cells via laser ablation-ICP-mass spectrometry using high-density microarray gelatin standards

Stijn Van Malderen (UGent) , Eva Vergucht (UGent) , Maarten De Rijcke (UGent) , Colin Janssen (UGent) , Laszlo Vincze (UGent) and Frank Vanhaecke (UGent)
(2016) ANALYTICAL CHEMISTRY. 88(11). p.5783-5789
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Abstract
This manuscript describes the development and characterization of a high-density microarray calibration standard, manufactured in-house and designed to overcome the limitations in precision, accuracy, and throughput of current calibration approaches for the quantification of elemental concentrations on the cellular level using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICPMS). As a case study, the accumulation of Cu in the model organism Scrippsiella trochoidea resulting from transition metal exposure (ranging from 0.5 to 100 μg/L) was evaluated. After the Cu exposure, cells of this photosynthetic dinoflagellate were treated with a critical point drying protocol, transferred to a carbon stub, and sputter-coated with a Au layer for scanning electron microscopy (SEM) analysis. In subsequent LA-ICPMS analysis, approximately 100 cells of each population were individually ablated. This approach permitted the evaluation of the mean concentration of Cu in the cell population across different exposure levels and also allowed the examination of the cellular distribution of Cu within the populations. In a cross-validation exercise, subcellular LA-ICPMS imaging was demonstrated to corroborate synchrotron radiation confocal X-ray fluorescence (SR-XRF) microimaging of single cells investigated under in vivo conditions.
Keywords
OPTICAL TWEEZERS, LIQUID SAMPLES, MODEL ORGANISMS, TISSUE-SECTIONS, CYTOMETRY, MS, RESOLUTION, CHALLENGES, ELEMENTS, QUANTIFY

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Chicago
Van Malderen, Stijn, Eva Vergucht, Maarten De Rijcke, Colin Janssen, Laszlo Vincze, and Frank Vanhaecke. 2016. “Quantitative Determination and Subcellular Imaging of Cu in Single Cells via Laser ablation-ICP-mass Spectrometry Using High-density Microarray Gelatin Standards.” Analytical Chemistry 88 (11): 5783–5789.
APA
Van Malderen, Stijn, Vergucht, E., De Rijcke, M., Janssen, C., Vincze, L., & Vanhaecke, F. (2016). Quantitative determination and subcellular imaging of Cu in single cells via laser ablation-ICP-mass spectrometry using high-density microarray gelatin standards. ANALYTICAL CHEMISTRY, 88(11), 5783–5789.
Vancouver
1.
Van Malderen S, Vergucht E, De Rijcke M, Janssen C, Vincze L, Vanhaecke F. Quantitative determination and subcellular imaging of Cu in single cells via laser ablation-ICP-mass spectrometry using high-density microarray gelatin standards. ANALYTICAL CHEMISTRY. 2016;88(11):5783–9.
MLA
Van Malderen, Stijn, Eva Vergucht, Maarten De Rijcke, et al. “Quantitative Determination and Subcellular Imaging of Cu in Single Cells via Laser ablation-ICP-mass Spectrometry Using High-density Microarray Gelatin Standards.” ANALYTICAL CHEMISTRY 88.11 (2016): 5783–5789. Print.
@article{7257293,
  abstract     = {This manuscript describes the development and characterization of a high-density microarray calibration standard, manufactured in-house and designed to overcome the limitations in precision, accuracy, and throughput of current calibration approaches for the quantification of elemental concentrations on the cellular level using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICPMS). As a case study, the accumulation of Cu in the model organism Scrippsiella trochoidea resulting from transition metal exposure (ranging from 0.5 to 100 \ensuremath{\mu}g/L) was evaluated. After the Cu exposure, cells of this photosynthetic dinoflagellate were treated with a critical point drying protocol, transferred to a carbon stub, and sputter-coated with a Au layer for scanning electron microscopy (SEM) analysis. In subsequent LA-ICPMS analysis, approximately 100 cells of each population were individually ablated. This approach permitted the evaluation of the mean concentration of Cu in the cell population across different exposure levels and also allowed the examination of the cellular distribution of Cu within the populations. In a cross-validation exercise, subcellular LA-ICPMS imaging was demonstrated to corroborate synchrotron radiation confocal X-ray fluorescence (SR-XRF) microimaging of single cells investigated under in vivo conditions.},
  author       = {Van Malderen, Stijn and Vergucht, Eva and De Rijcke, Maarten and Janssen, Colin and Vincze, Laszlo and Vanhaecke, Frank},
  issn         = {0003-2700},
  journal      = {ANALYTICAL CHEMISTRY},
  keyword      = {OPTICAL TWEEZERS,LIQUID SAMPLES,MODEL ORGANISMS,TISSUE-SECTIONS,CYTOMETRY,MS,RESOLUTION,CHALLENGES,ELEMENTS,QUANTIFY},
  language     = {eng},
  number       = {11},
  pages        = {5783--5789},
  title        = {Quantitative determination and subcellular imaging of Cu in single cells via laser ablation-ICP-mass spectrometry using high-density microarray gelatin standards},
  url          = {http://dx.doi.org/10.1021/acs.analchem.6b00334},
  volume       = {88},
  year         = {2016},
}

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