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Modulating Alginate Hydrogels for Improved Biological Performance as Cellular 3D Microenvironments.

Mariana Isabel Neves1,2,3, Lorenzo Moroni4,5, Cristina Carvalho Barrias1,2,6

  • 1i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.

Frontiers in Bioengineering and Biotechnology
|July 23, 2020
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Summary

Alginate hydrogels, derived from seaweed, are versatile biomaterials for cell culture and delivery. Modifications enhance their biological activity and mechanical properties for improved biomedical applications.

Keywords:
3D cell culture4D systemsalginatebiofunctionalizationbiomaterial

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Biomedical Engineering

Background:

  • Alginate, a seaweed-derived polysaccharide, is widely used in biomedical applications for 3D cell culture and in vivo cell delivery.
  • While biocompatible, native alginate hydrogels often lack sufficient biological interactivity and tunable mechanical properties for advanced applications.
  • Modifications and hybrid systems are essential to overcome these limitations and expand alginate's utility.

Purpose of the Study:

  • To review the properties and current clinical applications of alginate biomaterials.
  • To explore various strategies for enhancing alginate hydrogels' performance as 3D matrices and dynamic 4D systems.
  • To highlight the importance of rational design and modification for optimizing biomaterial function in biomedical settings.

Main Methods:

  • Literature review of alginate properties, modifications, and applications.
  • Analysis of strategies for incorporating cell-interactive domains and tuning mechanical characteristics.
  • Examination of hybrid systems combining alginate with other components.

Main Results:

  • Alginate hydrogels can be significantly improved through chemical modifications and the creation of hybrid systems.
  • Enhanced alginate matrices offer greater control over biological interactions and mechanical behavior.
  • These improvements facilitate advanced in vitro cell culture and in vivo therapeutic delivery systems.

Conclusions:

  • Rational design and modification of alginate biomaterials are critical for advancing their clinical potential.
  • Tailored alginate hydrogels can better mimic native extracellular microenvironments, improving cell behavior and therapeutic outcomes.
  • Further exploration of alginate-based 3D matrices and 4D dynamic systems holds promise for innovative biomedical solutions.