1
|
Dos Anjos S, Mavropoulos E, Alves GG, Costa AM, de Alencar Hausen M, Spiegel CN, Longuinho MM, Mir M, Granjeiro JM, Rossi AM. Impact of crystallinity and crystal size of nanostructured carbonated hydroxyapatite on pre-osteoblast in vitro biocompatibility. J Biomed Mater Res A 2019; 107:1965-1976. [PMID: 31035306 DOI: 10.1002/jbm.a.36709] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 04/24/2019] [Indexed: 01/26/2023]
Abstract
Nanostructured carbonated hydroxyapatite (nCHA) is a promising biomaterial for bone tissue engineering due to its chemical properties, similar to those of the bone mineral phase and its enhanced in vivo bioresorption. However, the biological effects of nCHA nanoparticles on cells and tissues are not sufficiently known. This study assessed the impact of exposing pre-osteoblasts to suspensions with high doses of nCHA nanoparticles with high or low crystallinity. MC3T3-E1 pre-osteoblasts were cultured for 1 or 7 days in a culture medium previously exposed to CHA nanoparticles for 1 day. Control groups were produced by centrifugation for removal of bigger nCHA aggregates before exposure. Interaction of nanoparticles with the culture medium drastically changed medium composition, promoting Ca, P, and protein adsorption. Transmission Electron microscopy revealed that exposed cells were able to internalize both materials, which seemed concentrated inside endosomes. No cytotoxicity was observed for both materials, regardless of centrifugation, and the exposure did not induce alterations in the release of pro-and anti-inflammatory cytokines. Morphological analysis revealed strong interactions of nCHA aggregates with cell surfaces, however without marked alterations in morphological features and cytoskeleton ultrastructure. The overall in vitro biocompatibility of nCHA materials, regardless of physicochemical characteristics such as crystallinity, encourages further studies on their clinical applications.
Collapse
Affiliation(s)
- Suzana Dos Anjos
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Physics Research, Urca, Rio de Janeiro, Brazil
| | - Elena Mavropoulos
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Physics Research, Urca, Rio de Janeiro, Brazil
| | - Gutemberg G Alves
- Department of Cellular and Molecular Biology, Institute of Biology, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Andrea M Costa
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Physics Research, Urca, Rio de Janeiro, Brazil
| | - Moema de Alencar Hausen
- Biomaterial's Laboratory, Faculty of Medical Sciences, Pontifical Catholic University of São Paulo, Sorocaba, São Paulo, Brazil
| | - Carolina N Spiegel
- Department of Cellular and Molecular Biology, Institute of Biology, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Mariana M Longuinho
- Universidade Federal do Rio de Janeiro, Instituto de Biofísica Carlos Chagas Filho, Rio de Janeiro, Brazil
| | - Mirta Mir
- Federal University of Alfenas, Exact Sciences Institute (ICEx) MG-Brasil, Alfenas, Brazil
| | - José M Granjeiro
- National Institute of Metrology, Duque de Caxias, Rio de Janeiro, Brazil
| | - Alexandre M Rossi
- Department of Condensed Matter, Applied Physics and Nanoscience, Brazilian Center for Physics Research, Urca, Rio de Janeiro, Brazil
| |
Collapse
|