Osteoblast studied on gelatin based biomaterials in rabbit Bone Bioengineering.

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Cell Biology

Background:

• Bone-derived-osteoblast seeded biomaterial scaffolds are crucial in tissue engineering for osseous defect treatment.
• Investigating in vitro osteogenesis of rabbit osteoblast cells (rOb) from bone tissue (rT) and mesenchymal stem cell-derived rOb from bone marrow (rM) on Gelatin-Hydroxyapatite (HG) biomaterials is essential.
• The role of amorphous chitosan (C) in enhancing the biocompatibility of HG-based biomaterials was explored.

Purpose of the Study:

• To evaluate the osteogenic potential of different rabbit osteoblast sources on a novel Gelatin-Hydroxyapatite-Chitosan biomaterial.
• To characterize the biomaterial's morphology and the cellular response to it.
• To determine the effectiveness of this biomaterial in mimicking bone extracellular matrix and promoting osteogenesis.

Main Methods:

• Preparation of lyophilized Gelatin-Hydroxyapatite-Chitosan (HCG) biomaterial.
• Seeding of rabbit osteoblast cells (rOb) from bone tissue (rT) and bone marrow (rM).
• Assessment of cell proliferation (CLSM, flow cytometry), morphology (SEM-EDX, AFM), metabolic activity (Alamar Blue assay), DNA content (Hoechst 33258), ALP activity, and calcium deposition (Alizarin Red S assay).

Main Results:

• The HCG biomaterial demonstrated good biocompatibility and structural integrity.
• Co-culture of bone tissue-derived rOb (rT) with HCG showed superior extracellular matrix (ECM) mimicking properties compared to bone marrow-derived rOb (rM).
• Enhanced osteogenesis was observed with rT on HCG, indicated by increased ALP activity and calcium deposition.

Conclusions:

• The novel HCG biomaterial effectively supports osteogenesis.
• Bone tissue-derived osteoblasts exhibit superior performance on this biomaterial for bone regeneration applications.
• This combination holds significant promise for bone bioengineering and the treatment of osseous defects.