Methacrylate-Modified Nanoparticles for Hydrogel Integration
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Solution Overview
Problem
Current methods for incorporating nanoparticles into photocrosslinked hydrogels and scaffolds often disrupt the hydrogel network and reduce crosslinking density, leading to issues with drug delivery efficiency, mechanical properties, and non-invasive monitoring of scaffold degradation.
Innovation Solution
A photocrosslinkable agent comprising methacrylate-modified nanoparticles with surface-attached bifunctional molecules, allowing for controlled incorporation and covalent linkage within the hydrogel network, minimizing disruption and maintaining crosslinking density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If nanoparticles are incorporated into hydrogel networks using conventional methods, then drug delivery and imaging functionalities are improved, but the hydrogel network structure is disrupted and crosslinking density is reduced
Solution Approach 1:
The patent divides the nanoparticle modification into distinct segments: first attaching targeting ligands (anti-EGFR antibodies) to nanoparticle surfaces, then separately attaching methacrylate groups to create reactive sites. This segmentation allows each functional component to be optimized independently while maintaining overall network integrity during photocrosslinking
Solution Approach 2:
The patent uses methacrylate groups as intermediary functional groups that bridge the nanoparticle surface and the hydrogel network. These intermediary groups enable covalent bonding between nanoparticles and polymer chains through photocrosslinking, acting as a mediator that integrates nanoparticles into the network without disrupting the overall structure
2Ease of manufacture
If nanoparticles are physically mixed into hydrogel precursors, then incorporation is simple and flexible, but nanoparticles are not covalently linked and may cause burst release or network disruption
Solution Approach 1:
The patent performs preliminary surface modification of nanoparticles with methacrylate groups before incorporating them into the hydrogel precursor solution. This preliminary action ensures that nanoparticles are pre-equipped with reactive functional groups, enabling them to participate in covalent network formation during subsequent photocrosslinking without requiring complex post-processing steps
Solution Approach 2:
The patent changes the chemical parameters of nanoparticle surfaces by introducing methacrylate functional groups, transforming them from inert particles to reactive crosslinking participants. This parameter change enables nanoparticles to form stable covalent bonds with the hydrogel network, preventing burst release and improving drug delivery reliability
3Extent of automation
If conventional photocrosslinking is performed with nanoparticle-containing hydrogels, then crosslinking occurs, but crosslinking density is reduced and mechanical properties are compromised
Solution Approach 1:
The patent makes nanoparticles multi-functional by equipping them with both targeting ligands (for specific cellular recognition) and methacrylate groups (for network crosslinking). This universality allows a single nanoparticle component to simultaneously provide biological functionality and structural integration, maintaining crosslinking density and mechanical properties while enabling targeted drug delivery
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient drug delivery, improved mechanical properties, and non-invasive monitoring of scaffold degradation with minimal disruption to the hydrogel network, enhancing both clinical and preclinical assessments.
Implementation Method 1
The hydrogel composition is illuminated with a wavelength and/or energy sufficient to initiate polymerization of the plurality of methacrylate groups
Implementation Method 2
Nanoparticles exhibit advantageous physical interactions with radiation (or photons) at wavelengths across the electromagnetic spectrum, as well as with electrons. These interactions—including absorption, emission, surface plasmon resonance, scattering, and transmission
Implementation Method 3
Nanoparticles exhibit advantageous physical interactions with radiation (or photons) at wavelengths across the electromagnetic spectrum, as well as with electrons. These interactions—including absorption, emission, surface plasmon resonance, scattering, and transmission
Data Source
AI summary
A photocrosslinkable agent includes at least one methacrylate-modified nanoparticle that includes a plurality of molecules attached to surface of a nanoparticle. At least a portion of the molecules includes a molecule that includes a nanoparticle surface attachment ligand a terminal methacrylate ligand. At least a portion of the molecules may include a second molecule that includes a nanoparticle surface attachment ligand and a hydrophilic terminal ligand, wherein the methacrylate-modified nanoparticle has water solubility that is controlled by the relative amounts of the terminal methacrylate ligand and the hydrophilic terminal ligand. The photocrosslinkable agent may be crosslinked within a polymer network by a one-step process, with minimal disruption to the molecular network or crosslinking density and may be formulated for use as one or more of an imaging contrast agent, a therapeutic, or a reinforcement, a transducer.