Macrophage polarization by plasma sprayed ceria coatings on titanium-based implants: Cerium valence state matters

doi:10.1016/j.apsusc.2019.144070

SIC OpenIR

	Macrophage polarization by plasma sprayed ceria coatings on titanium-based implants: Cerium valence state matters
	Shao, DD; Li, K; You, MY; Liu, SW; Hu, T; Huang, LP; Xie, YT; Zheng, XB
	2020-02-28
Source Publication	APPLIED SURFACE SCIENCE
ISSN	0169-4332
Subtype	Article
Abstract	With inflammation increasingly recognized as a key factor that influences fracture healing, the immune response is considered as a critical component in determining biomaterial-mediated osteogenesis. Here, the ceria coatings are applied to the titanium substrates via plasma spraying under different process gas compositions, forming A-III (low Ce4+ /Ce3+ ratio) and B-IV (high Ce4+ /Ce3+ ratio) coatings. Results of protein adsorption and conformation indicated that the exposed cell-binding sites of fibronectin and subsequent cell morphology were associated with the Ce valence states. The A-III and B-IV coatings clearly restricted and promoted the spreading of the adherent RAW264.7 macrophages, respectively. Cell morphology differences between the coatings correlated with a change in the percentage of RAW cells expressing M2 surface markers Cd206/163, together with expression of anti-inflammatory cytokines Il10/1ra, while there was no significant difference between them in the percentage of Ml-type macrophages. Owing to its higher catalase-mimetic activity, the B-IV coating exerted stronger inhibitory effects on reactive oxygen species generation and Nfkb activity than either A-III coating or Ti substrate. Consistently, the lowest expression levels of Nficb-regulated pro-inflammatory cytokines 1l6 and Tnfa were found for the B-IV coating. The manipulation of cerium valence states could be a good strategy in the design of orthopedic/dental implant coatings with beneficial immune response.
DOI	10.1016/j.apsusc.2019.144070
WOS Keyword	NF-KAPPA-B ; MESENCHYMAL STEM-CELL ; OXIDE NANOPARTICLES ; MIMETIC ACTIVITY ; INFLAMMATION ; SURFACES ; CEO2 ; XPS ; ROS ; DIFFERENTIATION
Language	英语
WOS Research Area	Chemistry ; Materials Science ; Physics
Publisher	ELSEVIER
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28284
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Shao, DD,Li, K,You, MY,et al. Macrophage polarization by plasma sprayed ceria coatings on titanium-based implants: Cerium valence state matters[J]. APPLIED SURFACE SCIENCE,2020.
APA	Shao, DD.,Li, K.,You, MY.,Liu, SW.,Hu, T.,...&Zheng, XB.(2020).Macrophage polarization by plasma sprayed ceria coatings on titanium-based implants: Cerium valence state matters.APPLIED SURFACE SCIENCE.
MLA	Shao, DD,et al."Macrophage polarization by plasma sprayed ceria coatings on titanium-based implants: Cerium valence state matters".APPLIED SURFACE SCIENCE (2020).

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