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- W4224272647 endingPage "212735" @default.
- W4224272647 startingPage "212735" @default.
- W4224272647 abstract "Developing multifunctional nanostructures that promote bone repair while fighting infection is highly desirable in bone regenerative therapies. Previous efforts have focused on achieving one property or another by altering the chemical makeup of nanostructures or using growth factors or antibiotics. We present nanostructures with several simultaneous functional attributes including positive effects of strontium on bone formation and prevention of osteoclast differentiation along with incorporation of antimicrobial peptides (AMP) to prevent infection. To form these multifunctional nanostructures, mesoporous calcium silicate (CaMSN) was modified with high levels of strontium. For this, CaMSNs were either partially substituted (20 wt% Ca) or completely replaced with strontium (Sr) to form Sr-CaMSN or SrMSN. The mesoporous nature of these bioactive silicate nanostructures rendered a configuration for substantial AMP loading as well as their effective delivery. The physico-chemical and structural characterization of synthesized MSNs confirmed the mesoporous nature of the synthesized MSNs and their total surface area, pore size, pore volume and SBF-mediated bioactivity remained unaltered with the incorporation of Sr. However, biological evaluation confirmed that synthesized SrMSN upregulated osteogenic differentiation of mesenchymal stromal cells and significantly downregulated osteoclast differentiation. Also, the AMP-loaded MSNs prevented formation and growth of methicillin resistant Staphylococcus aureus (MRSA) biofilms. Thus, high Sr-containing AMP-loaded SrMSNs may combat MRSA-associated infection while promoting bone regeneration. The controlled availability of therapeutic Sr and AMP release as SrMSN degrade enables its potential application in bone tissue regeneration." @default.
- W4224272647 created "2022-04-26" @default.
- W4224272647 creator A5025360487 @default.
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- W4224272647 creator A5058410767 @default.
- W4224272647 creator A5079285384 @default.
- W4224272647 creator A5080464734 @default.
- W4224272647 date "2022-04-01" @default.
- W4224272647 modified "2023-10-14" @default.
- W4224272647 title "Strontium- and peptide-modified silicate nanostructures for dual osteogenic and antimicrobial activity" @default.
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- W4224272647 doi "https://doi.org/10.1016/j.bioadv.2022.212735" @default.
- W4224272647 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35929201" @default.
- W4224272647 hasPublicationYear "2022" @default.
- W4224272647 type Work @default.