Particles of vaterite, a metastable CaCO3 polymorph, exhibit high biocompatibility for human osteoblasts and endothelial cells and may serve as a biomaterial for rapid bone regeneration

Journal of Tissue Engineering and Regenerative Medicine
Romina SchröderRonald E Unger

Abstract

We have previously described a promising alternative to conventional synthetic bone biomaterials using vaterite, a metastable CaCO3 polymorph that increases the local Ca2+ concentration in vitro and leads to an oversaturation of phosphate, the primary bone mineral. This stimulates a natural bone-like mineralisation in a short period of time. In this study, sterile and endotoxin-free vaterite particles were synthesised in a nearly quantitative yield. The 500-1,000 nm vaterite particles did not exhibit any cytotoxic effects as measured by MTS, lactate dehydrogenase, or crystal violet assays on the human osteoblast cell line (MG-63) exposed to concentrations up to 500 μg/ml vaterite up to 72 hr. MG-63, primary human osteoblasts or human umbilical vein endothelial cells in the presence of vaterite up to 500 μg/ml for 7 days exhibited typical growth patterns. Endothelial cells exhibited a normal induction of E-selectin after exposure to LPS and MG-63 cells in osteogenic differentiation medium showed an increased expression of alkaline phosphatase compared with the respective control cells without vaterite. MG-63 cultured on a vaterite-containing degradable poly(ethylene glycol)-hydrogel exhibited strong adhesion and proliferation, s...Continue Reading

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Citations

May 8, 2020·Advanced Healthcare Materials·Elena StengelinSebastian Seiffert
Jun 23, 2021·Chemical Society Reviews·Xianwen WangLiang Cheng

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