Matrix Vesicles-Containing Microreactors as Support for Bonelike Osteoblasts to Enhance Biomineralization.
Fabian ItelJesper Skovhus ThomsenBrigitte StädlerPublished in: ACS applied materials & interfaces (2018)
Therapeutic cell mimicry aims to provide a source of cell-like assemblies, which exhibit the core structural or functional properties of their natural counterparts with broad envisioned applications in biomedicine. Bone tissue engineering (BTE) aims at promoting and inciting the natural healing process of, for instance, critically sized bone defects. Microreactors designed to co-assemble with biological bone-forming osteoblasts like SaOS-2 cells to start biomineralization are reported for the first time. The alginate-based microparticles are equipped with active alkaline phosphatase-loaded artificial liposomes or SaOS-2-derived matrix vesicles (MVs). Spheroids assembled from SaOS-2 cells and microreactors not only exhibit higher cell viability, but also show enhanced biomineralization when MVs are present. The active biomineralization stimulation of the microreactors is illustrated by colorimetric calcium quantification and micro-computed tomography. These findings show the promising potential of applying cell mimicry in BTE.
Keyphrases
- single cell
- computed tomography
- induced apoptosis
- tissue engineering
- cell therapy
- bone mineral density
- drug delivery
- cell cycle arrest
- soft tissue
- magnetic resonance imaging
- gold nanoparticles
- stem cells
- cell death
- bone regeneration
- magnetic resonance
- signaling pathway
- mesenchymal stem cells
- bone loss
- bone marrow
- postmenopausal women
- cell proliferation
- hydrogen peroxide
- oxidative stress
- climate change
- image quality
- label free