Related Experiment Video
Updated: Jun 25, 2026
07:32
Preparation and Characterization of Individual and Multi-drug Loaded Physically Entrapped Polymeric Micelles
Published on: August 28, 2015
11.4K
Biologically Relevant Micellar Nanocarrier Systems for Drug Encapsulation and Functionalization of Metallic
Victoria Valdivia1, Raúl Gimeno-Ferrero1, Manuel Pernia Leal1
1Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Seville, Spain.
Nanomaterials (Basel, Switzerland)
|May 28, 2022
Summary
Researchers developed novel micellar nanocarriers from oleic acid and tetraethylene glycol for drug delivery and diagnostic imaging. These biocompatible systems effectively encapsulate dexamethasone and functionalize nanoparticles for advanced biomedical applications.
Area of Science:
- Materials Science
- Biomedical Engineering
- Nanotechnology
Background:
- Nanostructures, particularly micelles, are gaining attention for biomedical uses due to their biocompatibility and ease of synthesis.
- Micelles mimic cell membranes, making them promising for drug delivery and imaging applications.
Purpose of the Study:
- To develop novel micellar nanocarrier systems for drug encapsulation and release.
- To create functionalized hybrid nanomaterials by modifying metallic nanoparticles (NPs).
- To explore applications in drug delivery and diagnostic imaging.
Main Methods:
- Synthesized micelle precursors from oleic acid and tetraethylene glycol derivatives.
- Encapsulated the drug dexamethasone within the developed micelles.
- Functionalized gold nanoparticles (AuNPs) and iron oxide nanoparticles (IONPs) with micelle precursors.
- Evaluated the stability and characteristics of the resulting hybrid nanomaterials in aqueous media.
Main Results:
- Successfully developed micellar nanocarriers capable of in vitro dexamethasone release.
- Created stable, monodispersed hybrid nanomaterials by functionalizing metallic NPs.
- Demonstrated the versatility of triazole-derived micelle precursors for various applications.
Conclusions:
- The developed micellar systems offer a versatile platform for drug delivery.
- Functionalized hybrid nanomaterials show potential as contrast agents for magnetic resonance imaging (MRI) and computed tomography (CT).
- This research paves the way for new therapeutic and diagnostic nanomedicine applications.
Related Concept Videos
01:30Micelles
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
01:27Bioavailability Enhancement: Drug Permeability Enhancement
After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
01:30Modified-Release Drug Delivery Systems: Stimuli-Activated
Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
01:24Modified-Release Drug Delivery Systems: Site-Targeted
Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
01:24Site-Targeted Drug Delivery Systems: Polymeric Carriers
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...