Functional Titanium Substrates Synergetic Photothermal Therapy for Enhanced Antibacterial and Osteogenic Performance via Immunity Regulation
© 2023 Wiley-VCH GmbH..
Implant-associated infections (IAIs) significantly impair the integration between titanium (Ti) implants and bone tissues. Bacteria colonized on the surface of the implant can induce innate immune suppression of the host to resist clearance. Herein, an interfacial functionalization strategy is employed to introduce FeIII TA nanoparticles (NPs) and acetyl Bletilla striata polysaccharide (acBSP) on the Ti substrate to obtain the Ti-TF-acBSP system. Under near-infrared (NIR) irradiation, the hyperthermal effect induced by FeIII TA NPs directly killed bacteria. Meanwhile, macrophages are induced by acBSP to polarize into pro-inflammatory M1 phenotype, which enhanced the phagocytosis ability of macrophages and activated host innate immunity. Moreover, the asBSP instructed macrophages to secrete pro-osteogenic cytokine, which promoted osteogenic differentiation of MSCs. The results of the animal experiment in vivo confirmed that the Ti-TF-acBSP implant effectively eliminated bacterial infection under NIR irradiation, enhanced the expression of pro-inflammatory cytokine, and induced the production of bone-forming related factors. In a word, the functionalized Ti implant not only have a direct bactericidal effect but also regulate macrophage polarization as well as macrophage-mediated bactericidal and osteogenic effect. The strategy of combining photothermal therapy with immunoregulation will present a potential candidate for the development of novel antibacterial orthopedic devices.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:12 |
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| Enthalten in: |
Advanced healthcare materials - 12(2023), 19 vom: 01. Juli, Seite e2300494 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Xu, Kun [VerfasserIn] |
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| Links: |
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| Themen: |
Anti-Bacterial Agents |
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| Anmerkungen: |
Date Completed 28.07.2023 Date Revised 30.07.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1002/adhm.202300494 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM354351664 |
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| 520 | |a Implant-associated infections (IAIs) significantly impair the integration between titanium (Ti) implants and bone tissues. Bacteria colonized on the surface of the implant can induce innate immune suppression of the host to resist clearance. Herein, an interfacial functionalization strategy is employed to introduce FeIII TA nanoparticles (NPs) and acetyl Bletilla striata polysaccharide (acBSP) on the Ti substrate to obtain the Ti-TF-acBSP system. Under near-infrared (NIR) irradiation, the hyperthermal effect induced by FeIII TA NPs directly killed bacteria. Meanwhile, macrophages are induced by acBSP to polarize into pro-inflammatory M1 phenotype, which enhanced the phagocytosis ability of macrophages and activated host innate immunity. Moreover, the asBSP instructed macrophages to secrete pro-osteogenic cytokine, which promoted osteogenic differentiation of MSCs. The results of the animal experiment in vivo confirmed that the Ti-TF-acBSP implant effectively eliminated bacterial infection under NIR irradiation, enhanced the expression of pro-inflammatory cytokine, and induced the production of bone-forming related factors. In a word, the functionalized Ti implant not only have a direct bactericidal effect but also regulate macrophage polarization as well as macrophage-mediated bactericidal and osteogenic effect. The strategy of combining photothermal therapy with immunoregulation will present a potential candidate for the development of novel antibacterial orthopedic devices | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a antibacterial property | |
| 650 | 4 | |a immunoregulation | |
| 650 | 4 | |a osseointegration | |
| 650 | 4 | |a photothermal therapy | |
| 650 | 4 | |a titanium | |
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| 650 | 7 | |a D1JT611TNE |2 NLM | |
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| 700 | 1 | |a He, Ye |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Xuan |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Chuanchuan |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Jing |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Shaopeng |e verfasserin |4 aut | |
| 700 | 1 | |a Ding, Yao |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Yulu |e verfasserin |4 aut | |
| 700 | 1 | |a Gou, Shuangquan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Peng |e verfasserin |4 aut | |
| 700 | 1 | |a Cai, Kaiyong |e verfasserin |4 aut | |
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