Abstract
Purpose
Laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) was utilized in postmortem imaging of gadolinium (Gd) spatial distribution in a mouse tumor model postadministration of PEGylated Gd liposomal nanoparticles.
Procedures
PEGylated liposomal nanoparticles were formulated using a paramagnetic lipid incorporating Gd, in addition to a fluorescent lipid, and injected intravenously into Balb/C nude mice bearing IGROV-1 tumors. At postinjection (2 h), the tumors and selective organs were imaged by magnetic resonance imaging (MRI) and, after excision, by histology and LA–ICP–MS.
Results
The presence of Gd within tumor tissue was confirmed by LA–ICP–MS and when correlated to histology was found to be prevalent in regions of higher vascularity. The presence of Gd in the kidneys was also confirmed.
Conclusions
We have demonstrated, in a novel manner, the use of LA–ICP–MS for the spatial detection of Gd in tumor tissue. LA–ICP–MS is valuable in providing spatio-specific information of MRI contrast agents and more importantly Gd in tumor tissue.
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Abbreviations
- LA–ICP–MS:
-
Laser ablation inductively coupled plasma mass spectrometry
- Gd:
-
Gadolinium
- MRI:
-
Magnetic resonance imaging
- EPR:
-
Enhanced permeability and retention
- HEPES:
-
Hydroxyethylpiperazine ethane sulfonic acid
- PEG:
-
Polyethylene glycol
- Gd.DOTA.DSA:
-
Gadolinium (III) 2-{4,7-bis-carboxymethyl-10-[N, N-distearylamidomethyl-N′-amido-methyl]-1,4,7,10-tetra-azacyclododec-1-yl}-acetic acid
- DOPC:
-
1,2-Dioleoyl-sn-glycero-3-phosphocholine
- DOPE:
-
Dioleoyl phosphatidylethanolamine
- ROI:
-
Region of interest
- Zn:
-
Zinc
- H&E:
-
Hematoxylin and eosin
References
CaravanP, Ellison JJ, McMurry TJ, Lauffer RB (1999) Gadolinium(III) chelates as MRI contrast agents: structure, dynamics, and applications. Chem Rev 99:2293–2352
Torchilin VP (2007) Targeted pharmaceutical nanocarriers for cancer therapy and imaging. AAPS J 9:E128–E147
Oliver M, Ahmad A, Kamaly N, Perouzel E, Caussin A, Keller M et al (2006) MAGfect: a novel liposome formulation for MRI labelling and visualization of cells. Org Biol Chem 4:3489–3497
Kamaly N, Kalber T, Ahmad A, Oliver MH, So PW, Herlihy AH et al (2008) Bimodal paramagnetic and fluorescent liposomes for cellular and tumor magnetic resonance imaging. Bioconjug Chem 19:118–129
Gray AL (1985) Solid sample introduction by laser ablation for inductively coupled plasma source mass spectrometry. Analyst 110:551–556
Becker JS, Zoriy M, Dobrowolska J, Matusch A (2007) Laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) in elemental imaging of biological tissues and in proteomics. J Anal At Spectrom 22:736–744
Becker JS, Sela H, Dobrowolska J, Zoriy M (2008) Recent applications on isotope ratio measurements by ICP–MS and LA–ICP–MS on biological samples and single particles. Int J Mass Spectrom 270:1–7
Ma R, McLeod CW, Tomlinson K, Poole RK (2004) Speciation of protein-bound trace elements by gel electrophoresis and atomic spectrometry. Electrophoresis 25:2469–2477
Elliott VL, McLeod CW, Marshall PS (2005) Combination of gel electrophoresis and ICP–mass spectrometry’s—novel strategies for phosphoprotein measurement. Anal Bioanal Chem 383:416–423
Raab A, Pioselli B, Munro C, Thomas-Oates J, Feldmann J (2009) Evaluation of gel electrophoresis conditions for the separation of metal-tagged proteins with subsequent laser ablation ICP–MS detection. Electrophoresis 30:303–314
Wang S, Brown R, Gray DJ (1994) Application of laser ablation–ICP–MS to the spatially resolved micro-analysis of biological tissue. Appl Spectrosc 48:1321–1325
Binet MR, Ma R, McLeod CW, Poole RK (2003) Detection and characterization of zinc- and cadmium-binding proteins in Escherichia coli by gel electrophoresis and laser ablation–inductively coupled plasma–mass spectrometry. Anal Biochem 318:30–38
Becker JS, Mounicou S, Zoriy MV, Lobinski R (2008) Analysis of metal-binding proteins separated by non-denaturating gel electrophoresis using matrix-assisted laser desorption/ionization mass spectrometry (MALDI–MS) and laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS). Talanta 76:1183–1188
Seuma J, Bunch J, Cox A, McLeod C, Bell J, Murray C (2008) Combination of immunohistochemistry and laser ablation ICP mass spectrometry for imaging of cancer biomarkers. Proteomics 8:3775–3784
Millos J, Costas-Rodriguez M, Lavilla I, Bendicho C (2008) Multielemental determination in breast cancerous and non-cancerous biopsies by inductively coupled plasma–mass spectrometry following small volume microwave-assisted digestion. Anal Chim Acta 622:77–84
Hutchinson RW, Cox AG, McLeod CW, Marshall PS, Harper A, Dawson EL et al (2005) Imaging and spatial distribution of β-amyloid peptide and metal ions in Alzheimer’s plaques by laser ablation-inductively coupled plasma–mass spectrometry. Anal Biochem 346:225–233
Dobrowolska J, Dehnhardt M, Matusch A, Zoriy M, Palomero-Gallagher N, Koscielniak P et al (2008) Quantitative imaging of zinc, copper and lead in three distinct regions of the human brain by laser ablation inductively coupled plasma mass spectrometry. Talanta 74:717–723
Becker JS, Dobrowolska J, Zoriy M, Matusch A (2008) Imaging of uranium on rat brain sections using laser ablation inductively coupled plasma mass spectrometry: a new tool for the study of critical substructures affined to heavy metals in tissues. Rapid Commun Mass SP 22:2768–2772
Acquadro E, Cabella C, Ghiani S, Miragoli L, Bucci EM, Corpillo D (2009) Matrix-assisted laser desorption ionization imaging mass spectrometry detection of a magnetic resonance imaging contrast agent in mouse liver. Anal Chem 81:2779–2784
Kamaly N, Kalber TL, Thanou M, Bell JD, Miller AD (2009) Folate Receptor targeted bimodal liposomes for tumor magnetic resonance imaging. Bioconjug Chem 20:648–655
Acknowledgments
We thank Ms. Lorraine Lawrence for cryosectioning and histology assistance. Funding for Nazila Kamaly was provided by the MRC. The GTC wishes to thank EPSRC for funding and ImuThes Limited for recent support.
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Kamaly, N., Pugh, J.A., Kalber, T.L. et al. Imaging of Gadolinium Spatial Distribution in Tumor Tissue by Laser Ablation Inductively Coupled Plasma Mass Spectrometry. Mol Imaging Biol 12, 361–366 (2010). https://doi.org/10.1007/s11307-009-0282-4
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DOI: https://doi.org/10.1007/s11307-009-0282-4