{"id":7018,"date":"2023-01-19T16:25:44","date_gmt":"2023-01-19T16:25:44","guid":{"rendered":"https:\/\/polymer.bas.bg\/projects\/national-science-fund\/%d0%bf%d0%be%d0%bb%d0%b8%d0%bc%d0%b5%d1%80%d0%bd%d0%b8-%d0%bc%d0%b0%d1%82%d0%b5%d1%80%d0%b8%d0%b0%d0%bb%d0%b8-%d1%81-%d1%83%d0%bb%d1%82%d1%80%d0%b0-%d0%bd%d0%b8%d1%81%d0%ba%d0%b0-%d0%bf%d1%80%d0%be\/"},"modified":"2023-07-28T11:38:04","modified_gmt":"2023-07-28T11:38:04","slug":"%d0%bf%d0%be%d0%bb%d0%b8%d0%bc%d0%b5%d1%80%d0%bd%d0%b8-%d0%bc%d0%b0%d1%82%d0%b5%d1%80%d0%b8%d0%b0%d0%bb%d0%b8-%d1%81-%d1%83%d0%bb%d1%82%d1%80%d0%b0-%d0%bd%d0%b8%d1%81%d0%ba%d0%b0-%d0%bf%d1%80%d0%be","status":"publish","type":"page","link":"https:\/\/polymer.bas.bg\/en\/projects\/national-science-fund\/%d0%bf%d0%be%d0%bb%d0%b8%d0%bc%d0%b5%d1%80%d0%bd%d0%b8-%d0%bc%d0%b0%d1%82%d0%b5%d1%80%d0%b8%d0%b0%d0%bb%d0%b8-%d1%81-%d1%83%d0%bb%d1%82%d1%80%d0%b0-%d0%bd%d0%b8%d1%81%d0%ba%d0%b0-%d0%bf%d1%80%d0%be\/","title":{"rendered":"Nonfouling polymer materials based on polyzwitterons for wound healing"},"content":{"rendered":"\t\t
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Nonfouling polymer materials based on polyzwitterons for wound healing <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Coordinator:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Assoc. Prof. Elena Vassileva, PhD<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Base organization:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”
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Partner organizations:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Institute of Polymers – Bulgarian Academy of Sciences
Institute of organic Chemistry with Center of Phytochemistry (IOCCP), Bulgarian Academy of Sciences
Institute of Exoperimental Morphology, Pathology and Parasitology and Antropology with Musee (IEMPAM), Bulgarian Academy of Sciences
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Start:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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December, 2014
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Duration:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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36 months<\/em><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Summary:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The aim of the project is to study what lies behind the ultra low non specific protein adsorption ever measured on synthetic biomaterial, i.e. the relationship \u201cstructure – non fouling properties\u201d for polyzwiterionic materials. Polyzwitterions (PZI) and polyethyleneglycols (PEG) are known as polymers with very low bioadhesion and high biocompatibility. They are usually studied in a competitive way \u2013 which one shows better biocompatibility. The current project takes a new approach \u2013 combine them in one material (double polymer networks (DM)). This new material is expected to possess transparency, hydrophilicity, biocompatibility, non fouling properties, good mechanical performance (thanks to DM approach) and higher swelling under physiological conditions than in pure water. All these properties make the new materials very appropriate as hydrogel layer for wound healing as they will absorb wound exudate keeping at the same time the necessary level of moisture to promote wound healing.
This application is very new for PZI based materials and here the project could also go beyond state of the art. Because of its non fouling properties, the new PZI-PEG DM will ensure painless wound dressings changing preserving at the same time higher concentration of the naturally produced growth factors and cells that help the wound to heal. The structure-properties relationship enlightening for these materials will open new avenues in biomaterials design and synthesis and will allow for controlling the biological response to them for variety of applications.
Beside the low bioadhesion, PZI are known to be very gentle when interacting with proteins, non destroying their native structure and thus not hampering their natural therapeutic properties. This fact is especially important having in mind that proteins are still not widely used as drugs exactly because they are very unstable even under physiological conditions which significantly reduces their drug efficacy and performance. In the current project we will seek an answer to the question why exactly PZI are these polymers that not only do not destroy the protein native structure but even enhance the protein performance. To this purpose, new PZI (polysulfobetaine)-protein conjugates will be synthesized and used as model systems for detailed study on their structure-performance relationship. PEGylation is the \u201cgolden\u201d standard in this respect although PEG only stabilizes the proteins without enhancing their performance. Two types of model proteins will be used \u2013 collagen hydrolyzates and enzymes that remove the necrotic tissue from wound. These enzymes are known to be very effective in wounds cleaning and thus successfully used in gels and ointments, developed by one of the project\u2019 partners.
DM of PZI and PEG will be loaded with PZI-protein conjugates taking advantage of the specific dipole-dipole interaction which occurs between PZI macromolecules in the protein conjugates and PZI from the DM matrix. This interaction will ensure gentle anchoring of the proteins and later on their slow release under physiological conditions. The question why exactly PZI are so \u201cgentle\u201d when interacting with proteins still needs and answer and this is the second scientific challenge that the project aims to meet.
The project is interdisciplinary and gathers together scientists with different but complementary backgrounds to meet the project challenges. Part of the partners are already collaborators in similar topics and their common interest on the project will ensure sustainability of the project results after the project end.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Keywords:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Double polymer networks, polyzwitterions, polyethylene glycol, polymer-protein conjugates, non biofouling polymer materials
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Nonfouling polymer materials based on polyzwitterons for wound healing Coordinator: Assoc. Prof. Elena Vassileva, PhD Base organization: Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski” Partner organizations: Institute of Polymers – Bulgarian Academy of SciencesInstitute of organic Chemistry with Center of Phytochemistry (IOCCP), Bulgarian Academy of Sciences Institute of Exoperimental Morphology, Pathology and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":6625,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7018","page","type-page","status-publish","hentry"],"yoast_head":"\nNonfouling polymer materials based on polyzwitterons for wound healing - polymer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/polymer.bas.bg\/en\/projects\/national-science-fund\/\u043f\u043e\u043b\u0438\u043c\u0435\u0440\u043d\u0438-\u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0438-\u0441-\u0443\u043b\u0442\u0440\u0430-\u043d\u0438\u0441\u043a\u0430-\u043f\u0440\u043e\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nonfouling polymer materials based on polyzwitterons for wound healing - polymer\" \/>\n<meta property=\"og:description\" content=\"Nonfouling polymer materials based on polyzwitterons for wound healing Coordinator: Assoc. Prof. Elena Vassileva, PhD Base organization: Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski” Partner organizations: Institute of Polymers – Bulgarian Academy of SciencesInstitute of organic Chemistry with Center of Phytochemistry (IOCCP), Bulgarian Academy of Sciences Institute of Exoperimental Morphology, Pathology and […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/polymer.bas.bg\/en\/projects\/national-science-fund\/\u043f\u043e\u043b\u0438\u043c\u0435\u0440\u043d\u0438-\u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0438-\u0441-\u0443\u043b\u0442\u0440\u0430-\u043d\u0438\u0441\u043a\u0430-\u043f\u0440\u043e\/\" \/>\n<meta property=\"og:site_name\" content=\"polymer\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-28T11:38:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/polymer.bas.bg\/wp-content\/uploads\/2022\/10\/fni-logo.png\" \/>\n\t<meta property=\"og:image:width\" content=\"592\" \/>\n\t<meta property=\"og:image:height\" content=\"120\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/polymer.bas.bg\/en\/projects\/national-science-fund\/%d0%bf%d0%be%d0%bb%d0%b8%d0%bc%d0%b5%d1%80%d0%bd%d0%b8-%d0%bc%d0%b0%d1%82%d0%b5%d1%80%d0%b8%d0%b0%d0%bb%d0%b8-%d1%81-%d1%83%d0%bb%d1%82%d1%80%d0%b0-%d0%bd%d0%b8%d1%81%d0%ba%d0%b0-%d0%bf%d1%80%d0%be\/\",\"url\":\"https:\/\/polymer.bas.bg\/en\/projects\/national-science-fund\/%d0%bf%d0%be%d0%bb%d0%b8%d0%bc%d0%b5%d1%80%d0%bd%d0%b8-%d0%bc%d0%b0%d1%82%d0%b5%d1%80%d0%b8%d0%b0%d0%bb%d0%b8-%d1%81-%d1%83%d0%bb%d1%82%d1%80%d0%b0-%d0%bd%d0%b8%d1%81%d0%ba%d0%b0-%d0%bf%d1%80%d0%be\/\",\"name\":\"Nonfouling polymer materials based on polyzwitterons for wound healing - 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