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Seaweed cellulose scaffolds derived from green macroalgae for tissue engineering.

Nurit Bar-Shai1, Orna Sharabani-Yosef2, Meiron Zollmann3

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Seaweed cellulose scaffolds from Ulva and Cladophora species offer a biocompatible, non-toxic alternative extracellular matrix for mammalian cell growth. Their distinct structures influence cell behavior and proliferation, showing potential for biomedical applications.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Marine Biotechnology

Background:

  • The extracellular matrix (ECM) is crucial for cell function and fate.
  • Marine macroalgae possess unique structural properties suitable for biomaterial development.
  • Developing novel, sustainable biomaterials is essential for advanced biomedical applications.

Purpose of the Study:

  • To evaluate Ulva sp. and Cladophora sp. cellulose as novel extracellular matrix (ECM) candidates.
  • To fabricate and characterize seaweed cellulose-based scaffolds for in-vitro mammalian cell culture.
  • To investigate the impact of distinct seaweed scaffold structures on fibroblast behavior and proliferation.

Main Methods:

  • Decellularization-recellularization approach to create seaweed cellulose scaffolds.
  • In-vitro culture of mammalian fibroblasts on Ulva sp. (porous) and Cladophora sp. (fibrous) scaffolds.
  • Assessment of cell viability, morphology, spreading, and proliferation rates over 40 days.

Main Results:

  • Both seaweed cellulose scaffolds were non-toxic to fibroblasts, maintaining high cell viability for up to 40 days.
  • The Cladophora sp. scaffold promoted elongated cell spreading along fibers and linear growth.
  • The Ulva sp. scaffold supported rapid, multi-directional cell growth, reaching saturation by week 3.

Conclusions:

  • Seaweed-derived cellulose is a promising, biocompatible, and environmentally friendly biomaterial for tissue engineering.
  • Structural variations in seaweed scaffolds (porous vs. fibrous) differentially modulate cell behavior and proliferation.
  • These novel biomaterials hold potential for diverse biomedical applications, supporting aquaculture and ecological sustainability.