At CD Formulation, our team of professional analysts and advanced platform have collaborated with numerous enterprises and universities for several years to ensure the utmost quality in liposome assessment. Leveraging our extensive expertise in thermodynamic analysis of liposomes, we guarantee that our clients' liposome products maintain exceptional quality throughout every stage of the R&D process. If you are looking for a first-class analysis provider, we are the ideal choice for you.
Liposomes are thermodynamically unstable colloidal systems, characterized by a tendency for nanoscale vesicles to condense and flocculate. The aggregation behavior of liposomes can be influenced by surface charges. Membrane fluidity, encompassing kinetics, microviscosity, and lipid sequence within the bilayer, is a crucial physical property of liposomes. At the phase transition temperature, membrane fluidity increases significantly, leading to maximum release rate of encapsulated drugs within the liposome. Consequently, membrane fluidity directly impacts the stability of liposomes and subsequently affects their medicinal carrier properties and clinical efficacy. Thermal analysis of the bilayer serves as a pivotal indicator for evaluating membrane fluidity and uniformity while also validating the value of liposomes with uncertain phase transition temperatures.
The thermodynamic properties of liposome membranes are assessed at CD Formulation through the utilization and investigation of temperature-dependent fluorescence spectra associated with lipid membrane insertion.
The services we are able to offer are as follows:
Different substances incorporated into liposomes can induce domain formation on the surface of lipid membranes. For instance, drugs and surfactants have the potential to influence the changes in Tm of liposomal membranes, resulting in phase separation and enhanced membrane permeability. By utilizing this research service, we can deduce alterations in the structural properties of liposomes by observing variations in pre-T and main TmOT1/2, OH as well as the number of phase transition peaks exhibited by liposomes on the DSC (differential scanning calorimetry) curve. Furthermore, if there are stringent temperature requirements for liposomes, thermodynamic analysis can guide the optimization process for lipid formulations.
We offer this service to investigate the interaction between drugs and liposome membranes, aiming to determine the drug's specific target within the liposome components, assess its impact on membrane fluidity, elucidate the mechanism of drug action on biomembranes, and provide empirical data for evaluating the quality of liposomes.
Techniques & Platform | Specifics |
Differential scanning calorimetry (DSC) technique |
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Electron paramagnetic resonance (EPR) technique |
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Technology: electron paramagnetic resonance (EPR) analysis technology
Journal: Journal of Liposome Research
IF: 4.4
Published: 2010
Results: In this study, the effects of aminoglycoside antibiotics gentamicin (GN), Tobramycin (TOB), and Amikacin (AMI) on the thermodynamic properties of multilayer vesicles composed of 1, 2-dipalmitoyl-Sn-glycerol-3-phosphate choline (DPPC) were investigated by using differential scanning calorimetry (DSC) and electron paramagnetic resonance (EPR) and 31 P nuclear magnetic resonance (NMR) spectra. The relationship between the structure of aminoglycoside antibiotics and its effect on the bilayer physical properties of liposomes was studied.
The CD Formulation team possesses extensive project experience in the analysis of thermodynamic properties related to liposome membranes and has consistently delivered exceptional and satisfactory service to numerous clients throughout the years. For further information, please feel free to contact us.
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