Journal of Porous Materials, 2026 (SCI-Expanded, Scopus)
This study aimed to characterize a natural clinoptilolite-type zeolite and evaluate its effects on proliferation and migration in L929 (fibroblast) and HEK293T (epithelial) cell lines. XRD analysis confirmed the material's high purity, with clinoptilolite as the dominant phase (72.9%). XRF and ICP-MS analyses demonstrated that the Si/Al ratio (4.8–5.4) and cation exchange capacity (CEC: 2.38 meq/g) were consistent with typical clinoptilolite. SEM revealed irregular, aggregated particles (7–10 µm) with high porosity. Cell proliferation (MTT assay) and migration (Scratch Wound Assay) were assessed. The zeolite showed a significant dose- and time-dependent proliferative effect on both cell lines. Notable increases in proliferation were observed at 500 µg/mL in L929 cells at 72 h (p < 0.0001) and at 600 µg/mL in HEK293T cells (p < 0.0001). Cell migration was also enhanced, particularly at 200 µg/mL in L929 ( p < 0.01) and 100 µg/mL in HEK293T ( p < 0.001). Overall, these results indicate that this high-purity clinoptilolite zeolite possesses the potential to support the proliferation and migration of key cell types involved in wound healing and thus holds great promise as a bioactive material for biomedical applications.