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Li S, Shi L, Zhang L, Huang H, Xiao Y, Mao L, Tan R, Fu Z, Yu N, Yin D. Ionic liquid-mediated catalytic oxidation of β-caryophyllene by ultrathin 2D metal-organic framework nanosheets under 1 atm O2. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Gawne P, Man F, Fonslet J, Radia R, Bordoloi J, Cleveland M, Jimenez-Royo P, Gabizon A, Blower PJ, Long N, de Rosales RTM. Manganese-52: applications in cell radiolabelling and liposomal nanomedicine PET imaging using oxine (8-hydroxyquinoline) as an ionophore. Dalton Trans 2018; 47:9283-9293. [PMID: 29796500 PMCID: PMC6049564 DOI: 10.1039/c8dt00100f] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 03/20/2018] [Indexed: 12/22/2022]
Abstract
The ionophore 8-hydroxyquinoline (oxine) has been used to radiolabel cells and liposomal medicines with 111In and, more recently, 89Zr, for medical nuclear imaging applications. Oxine has also shown promising ionophore activity for the positron-emitting radionuclide 52Mn that should allow imaging of labelled cells and nanomedicines for long periods of time (>14 days). However, to date, the radiometal complex formed and its full labelling capabilities have not been fully characterised. Here, we provide supporting evidence of the formation of [52Mn]Mn(oxinate)2 as the metastable complex responsible for its ionophore activity. The cell labelling properties of [52Mn]Mn(oxinate)2 were investigated with various cell lines. The liposomal nanomedicine, DOXIL® (Caelyx) was also labelled with [52Mn]Mn(oxinate)2 and imaged in vivo using PET imaging. [52Mn]Mn(oxinate)2 was able to label various cell lines with moderate efficiency (15-53%), however low cellular retention of 52Mn (21-25% after 24 h) was observed which was shown not to be due to cell death. PET imaging of [52Mn]Mn-DOXIL at 1 h and 24 h post-injection showed the expected pharmacokinetics and biodistribution of this stealth liposome, but at 72 h post-injection showed a profile matching that of free 52Mn, consistent with drug release. We conclude that oxine is an effective ionophore for 52Mn, but high cellular efflux of the isotope limits its use for prolonged cell tracking. [52Mn]Mn(oxinate)2 is effective for labelling and tracking DOXIL in vivo. The release of free radionuclide after liposome extravasation could provide a non-invasive method to monitor drug release in vivo.
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Affiliation(s)
- Peter Gawne
- School of Biomedical Engineering & Imaging Sciences
, King's College London
, St Thomas’ Hospital
,
London
, SE1 7EH
, UK
.
| | - Francis Man
- School of Biomedical Engineering & Imaging Sciences
, King's College London
, St Thomas’ Hospital
,
London
, SE1 7EH
, UK
.
| | - Jesper Fonslet
- The Hevesy Lab
, Technical University of Denmark
,
4000 Roskilde
, Denmark
| | - Riya Radia
- School of Biomedical Engineering & Imaging Sciences
, King's College London
, St Thomas’ Hospital
,
London
, SE1 7EH
, UK
.
| | - Jayanta Bordoloi
- School of Biomedical Engineering & Imaging Sciences
, King's College London
, St Thomas’ Hospital
,
London
, SE1 7EH
, UK
.
| | - Matthew Cleveland
- GSK Medicines Research Centre
,
Gunnels Wood Road
, Stevenage
, Hertfordshire
, SG1 2NY
, UK
| | - Pilar Jimenez-Royo
- GSK Medicines Research Centre
,
Gunnels Wood Road
, Stevenage
, Hertfordshire
, SG1 2NY
, UK
| | - Alberto Gabizon
- Oncology Institute
, Shaare Zedek Medical Center and Hebrew University-School of Medicine
,
Jerusalem 9103102
, Israel
| | - Philip J. Blower
- School of Biomedical Engineering & Imaging Sciences
, King's College London
, St Thomas’ Hospital
,
London
, SE1 7EH
, UK
.
| | - Nicholas Long
- Department of Chemistry
, Imperial College London
,
South Kensington Campus
, London SW7 2AZ
, UK
| | - Rafael T. M. de Rosales
- School of Biomedical Engineering & Imaging Sciences
, King's College London
, St Thomas’ Hospital
,
London
, SE1 7EH
, UK
.
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Nakisa A, Karimi M, Yazdani E, Heydari A. Oxidative esterification of methylarenes and 1,3-dicarbonyls catalysed by copper chloride immobilized on magnetic nanoparticles. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3674] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Athar Nakisa
- Organic Laboratory, Department of Chemistry; Tarbiat Modares University; Tehran Iran
| | - Meghdad Karimi
- Organic Laboratory, Department of Chemistry; Tarbiat Modares University; Tehran Iran
| | - Elahe Yazdani
- Organic Laboratory, Department of Chemistry; Tarbiat Modares University; Tehran Iran
| | - Akbar Heydari
- Organic Laboratory, Department of Chemistry; Tarbiat Modares University; Tehran Iran
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Sagar A, Vidyacharan S, Sharada DS. I2-promoted cross-dehydrogenative coupling of α-carbonyl aldehydes with alcohols for the synthesis of α-ketoesters. RSC Adv 2014. [DOI: 10.1039/c4ra06028h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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