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The physiological polyphosphate as a healing biomaterial for chronic wounds:Crucial roles of its antibacterial and unique metabolic energy supplying properties

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Journal of Materials Science & Technology 2023年第4期135卷 170-185页

作者： Werner E.G.Müller hadrian schepler Meik Neufurth Shunfeng Wang Veronica Ferrucci Massimo Zollo Rongwei Tan Heinz C.Schröder Xiaohong Wang ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry University Medical Center of the Johannes Gutenberg UniversityDuesbergweg 6Mainz D-55128Germany Department of Dermatology University Clinic MainzLangenbeckstr.1Mainz D-55131Germany Dipartimento di Medicina Molecolare e Biotecnologie Mediche Universitàdegli Studi di Napoli Federico IIVia Sergio Pansini 5Naples 80131Italy Ceinge Biotecnologie Avanzate Francesco Salvatore Via G.Salvatore 486Naples 80145Italy Shenzhen Lando Biomaterials Co. Ltd.Shenzhen 518107China

Insufficient metabolic energy,in the form of adenosine triphosphate(ATP),and bacterial infections are among the main causes for the development of chronic *** we showed that the physi-ological inorganic polymer polyphosphate(polyP)massively accelerates wound healing both in animals(diabetic mice)and,when incorporated into mats,in patients with chronic ***,we focused on a hydrogel-based gel formulation,supplemented with both soluble sodium polyP(Na-polyP)and amor-phous calcium polyP nanoparticles(Ca-polyP-NP).Exposure of human epidermal keratinocytes to the gel caused a significant increase in extracellular ATP level,an effect that was even enhanced when Na-polyP was combined with ***,it is shown that the added polyP in the gel is converted into a coacervate,leading to encapsulation and killing of *** data on human chronic wounds showed that the administration of hydrogel leads to the complete closure of these *** analysis of biopsies showed an increased granulation of the wounds and an enhanced microvessel *** results indicate that the polyP hydrogel,due to its properties to entrap bacteria and generate metabolic energy,is a very promising formulation for a new therapy for chronic wounds.

关键词： Inorganic polyphosphate Nanoparticles Hydrogel Coacervate Human chronic wounds Antibacterial activity Metabolic energy

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