1
|
Araújo M, Silveira J, Sousa A, Bessa-Gonçalves M, Santos SG, Barrias CC. A bioinspired multifunctional hydrogel patch targeting inflammation and regeneration in chronic intestinal wounds. Biomater Sci 2021; 9:6510-6527. [PMID: 34582531 DOI: 10.1039/d1bm00118c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Healing of intestinal chronic wounds remains a major challenge as current therapies are ineffective in promoting proper regeneration of the damaged intestinal wall. An innovative concept, based on a bioinspired multifunctional alginate-melanin hybrid 3D scaffold, to target both inflammatory and regenerative processes, is proposed herein. Hydrogel-entrapped melanin nanoparticles demonstrated free-radical scavenging activity, supported by the neutralization of free-radicals in solution (90%), and the in vitro capture of reactive oxygen species (ROS) produced by stimulated macrophages in an inflammatory-mimicking environment. Notably, scaffolds could be reused (at least 3 times), while maintaining these properties. The extracellular matrix (ECM)-inspired biomaterial, containing protease-sensitive and integrin-binding domains, exhibited remarkable ability for cell colonisation. Human intestinal fibroblasts and epithelial cells (Caco-2) co-seeded on lyophilized scaffolds were able to invade/colonize the construct and produce endogenous ECM, key for neo-tissue formation and re-epithelialization. Scaffolds presented tuneable mechanical properties and could be used both in hydrated and freeze-dried states, maintaining their performance upon rehydration, which are attractive features for clinical application. Collectively, our results highlight the potential of biofunctionalized alginate-melanin hybrid 3D scaffolds as multi-therapeutic patches for modulating inflammation and tissue regeneration in chronic intestinal wounds, which address a major but still unmet clinical need. The proposed multi-therapeutic strategy may potentially be extended to the treatment of other chronic wounds.
Collapse
Affiliation(s)
- Marco Araújo
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal
| | - João Silveira
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,FEUP - Faculdade de Engenharia da Universidade do Porto, University of Porto, 4200-135, Portugal
| | - Aureliana Sousa
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal
| | - Mafalda Bessa-Gonçalves
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4050-313, Portugal
| | - Susana G Santos
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4050-313, Portugal
| | - Cristina C Barrias
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4050-313, Portugal
| |
Collapse
|
2
|
Karabulut HRF, Mert B, Altinkok C, Karatavuk AO, Acik G, Turkyilmaz M. Synthesis of new bio‐based hydrogels derived from bile acids by free‐radical photo‐polymerization. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | - Berk Mert
- Department of Chemistry, Faculty of Science Trakya University Edirne Turkey
| | - Cagatay Altinkok
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
| | | | - Gokhan Acik
- Department of Chemistry, Faculty of Science and Letters Piri Reis University Istanbul Turkey
| | - Murat Turkyilmaz
- Department of Chemistry, Faculty of Science Trakya University Edirne Turkey
| |
Collapse
|
3
|
Nouh SA, Benthami K, Abou Elfadl A, El-Shamy NT, Tommalieh MJ. Structural, thermal and optical characteristics of laser-exposed Pd/PVA nanocomposite. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03188-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
6
|
Konuray O, Fernández-Francos X, Ramis X, Serra À. State of the Art in Dual-Curing Acrylate Systems. Polymers (Basel) 2018; 10:E178. [PMID: 30966214 PMCID: PMC6415122 DOI: 10.3390/polym10020178] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 11/16/2022] Open
Abstract
Acrylate chemistry has found widespread use in dual-curing systems over the years. Acrylates are cheap, easily handled and versatile monomers that can undergo facile chain-wise or step-wise polymerization reactions that are mostly of the "click" nature. Their dual-curing processes yield two distinct and temporally stable sets of material properties at each curing stage, thereby allowing process flexibility. The review begins with an introduction to acrylate-based click chemistries behind dual-curing systems and relevant reaction mechanisms. It then provides an overview of reaction combinations that can be encountered in these systems. It finishes with a survey of recent and breakthrough research in acrylate dual-curing materials for shape memory polymers, optical materials, photolithography, protective coatings, structured surface topologies, and holographic materials.
Collapse
Affiliation(s)
- Osman Konuray
- Thermodynamics Laboratory, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain.
| | - Xavier Fernández-Francos
- Thermodynamics Laboratory, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain.
| | - Xavier Ramis
- Thermodynamics Laboratory, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain.
| | - Àngels Serra
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain.
| |
Collapse
|