Citrate-modified bacterial cellulose as a potential scaffolding material for bone tissue regeneration

Area of Science:

• Biomaterials Science
• Biomedical Engineering
• Nanotechnology

Background:

• Bacterial cellulose (BC) is a biocompatible polymer with potential in biomedical applications, but its limited cell adhesion hinders its use.
• Modifying BC's surface chemistry is crucial for improving its integration with biological systems.

Purpose of the Study:

• To develop a hydroxyapatite-modified bacterial cellulose (BMBC) scaffold for bone tissue regeneration.
• To enhance the biocompatibility and osteoconductive properties of bacterial cellulose.

Main Methods:

• Biomimetic synthesis of hydroxyapatite (HA) into citrate-modified bacterial cellulose (MBC) in simulated body fluid (SBF).
• Characterization using FTIR, XRD, FE-SEM, TGA, and compressive modulus tests.
• In vitro evaluation of osteoblast cell viability, proliferation, and attachment using MTS, TBDE, and cell attachment assays.

Main Results:

• The biomineralized MBC (BMBC) samples exhibited successful hydroxyapatite incorporation.
• BMBC demonstrated good cell viability, proliferation, and attachment of osteoblast cells over 7 days.
• The material showed promising mechanical properties suitable for scaffolding applications.

Conclusions:

• The developed BMBC material is a promising candidate for bone tissue regeneration scaffolds.
• Enhanced BC with HA incorporation improves cellular interaction and biocompatibility.
• This biomimetic approach offers a viable strategy for creating advanced TE scaffolds.