Characterization of hFOB 1.19 Cell Line for Studying Zn-Based Degradable Metallic Biomaterials

Area of Science:

• Biomaterials Science
• Cell Biology
• Toxicology

Background:

• In vitro testing is crucial for new biomaterial development.
• The human fetal osteoblast cell line (hFOB 1.19) is a valuable model, but its cultivation protocols vary.
• Zinc-based degradable metallic materials require thorough biocompatibility assessment.

Purpose of the Study:

• To investigate the toxicity of zinc ions on the hFOB 1.19 cell line.
• To determine the influence of cultivation temperature and geneticin (G418) on hFOB 1.19 sensitivity to zinc.
• To compare the cytotoxicity of Zn-based biomaterials using hFOB 1.19 and L929 mouse fibroblast cells.

Main Methods:

• Tested zinc ion (Zn2+) toxicity on hFOB 1.19 cells under varying conditions (temperature, G418 presence).
• Compared hFOB 1.19 cell sensitivity to zinc with L929 mouse fibroblast cells.
• Evaluated the cytotoxicity of three Zn-based biomaterials in two media types.

Main Results:

• Geneticin (G418) reduced hFOB 1.19 sensitivity to Zn2+.
• Elevated (restrictive) temperatures increased hFOB 1.19 sensitivity to Zn2+.
• hFOB 1.19 cells were less sensitive to zinc than L929 cells.

Conclusions:

• Cultivation temperature and the presence of G418 significantly alter hFOB 1.19 cell sensitivity to zinc.
• hFOB 1.19 cells exhibit lower sensitivity to zinc compared to L929 cells.
• Careful selection of hFOB 1.19 cultivation conditions is essential for accurate biomaterial testing.