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Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
Published on: February 7, 2021
Hydrogel design at anatomical extremes: Lessons learned from ocular and intraperitoneal applications
Ragna Haegebaert1, Léa Guerassimoff2, Luca Paoletti2
1Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent University, Belgium.
Hydrogels offer versatile drug delivery solutions for tissues like the eye and peritoneal cavity. Comparing these sites reveals shared and unique challenges, guiding future hydrogel design for broader applications.
Area of Science:
- Biomaterials Science
- Drug Delivery Systems
- Regenerative Medicine
Background:
- Hydrogels are adaptable biomaterials utilized in drug delivery, wound healing, and vision correction.
- Their properties (e.g., stiffness, adhesion) can be tuned using natural or synthetic polymers for specific tissue applications.
- While the eye and skin are common targets, the peritoneal cavity is less explored for hydrogel applications.
Purpose of the Study:
- To compare the physiological characteristics of the eye and peritoneal cavity and their influence on hydrogel formulation and performance.
- To explore the transferability of hydrogel design strategies between these two distinct anatomical sites.
- To assess the feasibility of a universal hydrogel design for both ocular and peritoneal applications.
Main Methods:
- Review of existing literature on hydrogel applications in the eye and peritoneal cavity.
- Comparative analysis of anatomical and physiological factors influencing hydrogel behavior in each site.
- Identification of common and distinct challenges in hydrogel design for ocular versus peritoneal delivery.
Main Results:
- Both the eye and peritoneal cavity present unique challenges (e.g., transparency for the eye, volume for the peritoneum) alongside shared requirements like biocompatibility and sterility.
- Design principles for ocular hydrogels may offer insights for peritoneal applications, and vice versa, particularly concerning injectability and biocompatibility.
- Significant differences in physiological environments necessitate tailored approaches, questioning the practicality of a single hydrogel design for both sites.
Conclusions:
- Hydrogel design must consider specific organ physiology, even when sharing some application requirements.
- Cross-disciplinary insights between ocular and peritoneal hydrogel research can advance biomaterial development.
- Further research is needed to determine if a single hydrogel formulation can effectively serve both the eye and the peritoneal cavity.
