PMID- 32021183 OWN - NLM STAT- MEDLINE DCOM- 20200518 LR - 20240328 IS - 1178-2013 (Electronic) IS - 1176-9114 (Print) IS - 1176-9114 (Linking) VI - 15 DP - 2020 TI - Incorporation of ROS-Responsive Substance P-Loaded Zeolite Imidazolate Framework-8 Nanoparticles into a Ca(2+)-Cross-Linked Alginate/Pectin Hydrogel for Wound Dressing Applications. PG - 333-346 LID - 10.2147/IJN.S225197 [doi] AB - PURPOSE: Wound healing, especially of extensive full-thickness wounds, is one of the most difficult problems in clinical studies. In this study, we prepared a novel substance P (SP)-delivery system using zeolite imidazolate framework-8 (ZIF-8) nanoparticles. METHODS: We synthesized ZIF-8 nanoparticles using a modified biomimetic mineralization method. We then coated SP-loaded ZIF-8 nanoparticles (SP@ZIF-8) with polyethylene glycol-thioketal (PEG-TK) to fabricate SP@ZIF-8-PEG-TK nanoparticles, and encapsulated them in injectable hydrogel composed of sodium alginate and pectin and cross-linked using calcium chloride. The final hydrogel wound dressing containing SP@ZIF-8-PEG-TK nanoparticles was called SP@ZIF-8-PEG-TK@CA. RESULTS: The fabricated ZIF-8 nanoparticles had high SP-loading efficiency. SP-release assay showed that the SP@ZIF-8-PEG-TK nanoparticles maintained drug activity and showed responsive release under stimulation by reactive oxygen species. The SP@ZIF-8-PEG-TK nanoparticles promoted proliferation of human dermal fibroblasts, up-regulated expression levels of inflammation-related genes in macrophages, and exhibited favorable cytocompatibility in vitro. Full-thickness excision wound models in vivo confirmed that SP@ZIF-8-PEG-TK@CA dressings had excellent wound-healing efficacy by promoting an early inflammatory response and subsequent M2 macrophage polarization in the wound-healing process. CONCLUSION: In conclusion, these findings indicated that SP@ZIF-8-PEG-TK@CA dressings might be useful for wound dressing applications in the clinic. CI - (c) 2020 Zhu et al. FAU - Zhu, Yiming AU - Zhu Y AD - Department of General Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China. FAU - Yao, Zuochao AU - Yao Z AD - Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China. FAU - Liu, Yushu AU - Liu Y AD - Department of Burns and Plastic Surgery, Binzhou Medical University Hospital, Binzhou City, Shandong Province, China. FAU - Zhang, Wen AU - Zhang W AD - Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China. FAU - Geng, Lele AU - Geng L AUID- ORCID: 0000-0002-0165-7675 AD - Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China. FAU - Ni, Tao AU - Ni T AD - Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China. LA - eng PT - Journal Article DEP - 20200120 PL - New Zealand TA - Int J Nanomedicine JT - International journal of nanomedicine JID - 101263847 RN - 0 (Alginates) RN - 0 (Cross-Linking Reagents) RN - 0 (Hydrogels) RN - 0 (Imidazoles) RN - 0 (Reactive Oxygen Species) RN - 1318-02-1 (Zeolites) RN - 33507-63-0 (Substance P) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 89NA02M4RX (Pectins) RN - M4I0D6VV5M (Calcium Chloride) SB - IM MH - Alginates/chemistry MH - Animals MH - *Bandages MH - Calcium Chloride/chemistry MH - Cell Proliferation/drug effects MH - Cross-Linking Reagents/chemistry MH - Drug Delivery Systems/methods MH - Fibroblasts/cytology/drug effects MH - Humans MH - Hydrogels/chemistry MH - Imidazoles/chemistry MH - Mice, Inbred BALB C MH - Nanoparticles/administration & dosage/*chemistry MH - Pectins/chemistry MH - Polyethylene Glycols/chemistry MH - Reactive Oxygen Species/*metabolism MH - Substance P/*administration & dosage/pharmacokinetics MH - Wound Healing/*drug effects MH - Zeolites/*chemistry PMC - PMC6980861 OTO - NOTNLM OT - hydrogel OT - metal-organic framework OT - nanoparticles OT - substance P OT - wound healing COIS- The authors declared that they have no competing interests. EDAT- 2020/02/06 06:00 MHDA- 2020/05/19 06:00 PMCR- 2020/01/20 CRDT- 2020/02/06 06:00 PHST- 2019/07/29 00:00 [received] PHST- 2020/01/02 00:00 [accepted] PHST- 2020/02/06 06:00 [entrez] PHST- 2020/02/06 06:00 [pubmed] PHST- 2020/05/19 06:00 [medline] PHST- 2020/01/20 00:00 [pmc-release] AID - 225197 [pii] AID - 10.2147/IJN.S225197 [doi] PST - epublish SO - Int J Nanomedicine. 2020 Jan 20;15:333-346. doi: 10.2147/IJN.S225197. eCollection 2020.