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Microfluidic generation of PEG-b-PLA polymersomes containing alginate-based core hydrogel
Chiara Martino1, Tae Yong Lee2, Shin-Hyun Kim2
1Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering , ETH Zurich, Vladimir Prelog Weg 1, Zürich 8093, Switzerland.
Biomicrofluidics
|April 1, 2015
Summary
We developed a new method using microfluidics to create cell-like hydrogel structures with responsive membranes. This technique enables controlled gelation of the inner core via calcium ion diffusion, offering potential for advanced biomaterials.
Area of Science:
- Biomaterials Science
- Chemical Engineering
- Cellular Engineering
Background:
- Developing artificial cell-like structures is crucial for mimicking biological functions.
- Creating biocompatible hydrogels with responsive membranes presents significant challenges.
Purpose of the Study:
- To present a novel microfluidic method for generating monodisperse, cell-like structures.
- To investigate the controlled gelation of an alginate core within a responsive polymersome membrane.
Main Methods:
- Utilizing droplet-based microfluidics to create polyethylene glycol-polylactic acid (PEG-PLA) polymersomes.
- Encapsulating liquid alginate within the polymersomes.
- Inducing alginate gelation via an osmotic pressure gradient to facilitate calcium ion influx.
Main Results:
- Successfully generated monodisperse PEG-PLA polymersomes encapsulating alginate.
- Demonstrated controlled alginate core gelation by manipulating calcium ion concentration.
- Showcased the membrane's responsiveness to chemical cues (calcium ions).
Conclusions:
- The developed microfluidic method offers a robust platform for creating functional, cell-like hydrogel structures.
- The chemically responsive membrane allows for precise control over internal hydrogel formation.
- These structures hold promise for applications in drug delivery, tissue engineering, and regenerative medicine.
