Metallosomes for biomedical applications by mixing molybdenum carbonyl metallosurfactants and phospholipids

New supramolecular systems have been prepared by mixing molybdenum organometallic metallosurfactants M(CO)5L and M(CO)4L2 {L = Ph2P(CH2)6SO3Na} with the phospholipid phosphatidylcholine. The analysis of the resulting supramolecular structures using dynamic light scattering and cryo-transmission elec...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2018-10, Vol.47 (40), p.14293-14303
Main Authors: Marín-García, M, Benseny-Cases, N, Camacho, M, Perrie, Y, Suades, J, Barnadas-Rodríguez, R
Format: Article
Language:English
Subjects:
Aggregates
Biocompatibility
Biomedical materials
Biomedical Technology
Carbon Monoxide - chemistry
Carbonyls
Fourier transforms
Infrared spectroscopy
Liposomes
Macromolecular Substances - chemical synthesis
Macromolecular Substances - chemistry
Microfluidics
Microscopy
Molybdenum
Molybdenum - chemistry
Organometallic Compounds - chemical synthesis
Organometallic Compounds - chemistry
Phospholipids
Phospholipids - chemistry
Photon correlation spectroscopy
Solvents
Surface-Active Agents - chemistry
Synchrotron radiation
Toxicity
Transmission electron microscopy
Ultraviolet radiation
Viability
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Summary:New supramolecular systems have been prepared by mixing molybdenum organometallic metallosurfactants M(CO)5L and M(CO)4L2 {L = Ph2P(CH2)6SO3Na} with the phospholipid phosphatidylcholine. The analysis of the resulting supramolecular structures using dynamic light scattering and cryo-transmission electron microscopy has shown the formation of different aggregates depending on the metallosurfactant/phospholipid ratio, as well as a significantly different behaviour between the two studied metallosurfactants. Mixed vesicles, with properties very similar to liposomes, can be obtained with both compounds, and are called metallosomes. The formation of the mixed aggregates has also been studied by microfluidics using MeOH and EtOH as organic solvents, and it has been observed that the size of the aggregates is strongly dependent on the organic solvent used. In order to analyse the viability of these mixed systems as CO Releasing Molecules (CORMs) for biomedical applications, the CO release was studied by FT-IR spectroscopy, showing that they behave as photo-CORMs with visible and ultraviolet light. Toxicity studies of the different mixed aggregate systems have shown that metallosomes exhibit a very low toxicity, similar to liposomes that do not contain metallosurfactants, which is well below the results observed for pure metallosurfactants. Micro-FTIR microscopy using synchrotron radiation has shown the presence of metallosurfactants in cells. The results of this study show the influence of the length of the hydrocarbon chain on the properties of these mixed systems, compared with previously reported data.
ISSN:1477-9226
1477-9234
DOI:10.1039/c8dt01584h