Special Issue "Multi-Functional Collagen-Based Biomaterials for Biomedical Applications II"

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: 30 September 2023 | Viewed by 2270

Special Issue Editors

Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
Interests: regenerative medicine; medical devices; biomaterials; collagen; scaffolds; drug delivery systems
Special Issues, Collections and Topics in MDPI journals
Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
Interests: polymeric devices for biomedical applications, including scaffolds for regenerative medicine, micro- and nano-particles for controlled drug delivery, wound dressings, and perm-selective barriers for cell encapsulation
Special Issues, Collections and Topics in MDPI journals
1. Department of Biological and Environmental Sciences and Technologies (DeBEST), Università del Salento, Via per Monteroni c/o Ecotekne, 73100 Lecce, Italy
2. School of Medicine, University of Bari, P.zza Giulio Cesare, 70124 Bari, Italy
Interests: cell physiology; comparative and applied physiology; cellular homeostasis; transmembrane transport processes/systems; solute carriers (SLC); epithelial physiology; epithelial cell models; oligopeptides; immunity and inflammation; animal models; zebrafish; cytotoxicity; cell–material interactions; biomaterials; tissue engineering; tissue regeneration
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymeric biomaterials are an essential tool in the biomedical field. Their high biocompatibility and ability to provide adequate regenerative support are fundamental for the development of new successful approaches for different therapeutic purposes. In particular, biomaterials derived from living organisms exhibit not only structural roles, but also several non-structural functions implicated in cellular growth, migration, and differentiation. For example, type I collagen—an ubiquitarian structural protein present in the mammalian body—plays a dominant role in maintaining the biological and structural integrity of various tissues. In recent years, with the ultimate goal of developing multi-functional collagen-based devices that are able to better promote the functional recovery of damaged tissues, there have been numerous studies focused on the development of novel techniques and methods for the development and characterization of innovative and advanced high-performance formulations. The ability to control, modify, and tune the performance of collagen-based biomaterials by optimizing scaffold architecture—besides modifying their chemistry, blending with other materials/therapeutics, or by developing stimuli-responsive formulations—is extremely important when specific multi-functionalities are sought. The present Special Issue welcomes contributions in the form of original articles, clinical studies, or review articles on the broad topic of multi-functional collagen-based biomaterials for biomedical applications, with a focus on any aspect regarding developmental methods (including novel production, processing, and modification of innovative strategies) and a particular attention to the function enhancement of collagen-based formulations. Articles in interdisciplinary areas where the pairing of multiple approaches plays a significant role in the development of multi-functional devices are also welcome.

Dr. Nunzia Gallo
Dr. Marta Madaghiele
Dr. Alessandra Quarta
Dr. Amilcare Barca
Guest Editors

Manuscript Submission Information

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Keywords

  • biomaterials
  • collagen
  • tissue engineering
  • regenerative medicine
  • scaffold
  • crosslinking
  • medical devices
  • biomedical
  • biocompatibility

Published Papers (4 papers)

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Research

Article
Effect of the Electric Field on the Biomineralization of Collagen
Polymers 2023, 15(14), 3121; https://doi.org/10.3390/polym15143121 - 22 Jul 2023
Viewed by 408
Abstract
Collagen/hydroxyapatite hybrids are promising biomimetic materials that can replace or temporarily substitute bone tissues. The process of biomineralization was carried out through a double diffusion system. The methodological principle consisted in applying an electric field on the incubation medium to promote the opposite [...] Read more.
Collagen/hydroxyapatite hybrids are promising biomimetic materials that can replace or temporarily substitute bone tissues. The process of biomineralization was carried out through a double diffusion system. The methodological principle consisted in applying an electric field on the incubation medium to promote the opposite migration of ions into collagen membranes to form hydroxyapatite (HA) on the collagen membrane. Two physically separated solutions were used for the incubation medium, one rich in phosphate ions and the other in calcium ions, and their effects were evaluated against the traditional mineralization in Simulated Body Fluid (SBF). Pre-polarization of the organic membranes and the effect of incubation time on the biomineralization process were also assessed by FTIR and Raman spectroscopies.Our results demonstrated that the membrane pre-polarization significantly accelerated the mineralization process on collagen. On the other side, it was found that the application of the electric field influenced the collagen structure and its interactions with the mineral phase. The increment of the mineralization degree enhanced the photoluminescence properties of the collagen/HA materials, while the conductivity and the dielectric constant were reduced. These results might provide a useful approach for future applications in manufacturing biomimetic bone-like materials. Full article
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Article
Profitability of Chemically Cross-Linked Collagen Scaffold Production Using Bovine Pericardium: Revaluing Waste from the Meat Industry for Biomedical Applications
Polymers 2023, 15(13), 2797; https://doi.org/10.3390/polym15132797 - 23 Jun 2023
Viewed by 403
Abstract
The meat industry generates a large amount of waste that can be used to create useful products such as bio-implants, which are usually expensive. In this report, we present an economic analysis of a continuous process for large-scale chemically cross-linked collagen scaffold (CCLCS) [...] Read more.
The meat industry generates a large amount of waste that can be used to create useful products such as bio-implants, which are usually expensive. In this report, we present an economic analysis of a continuous process for large-scale chemically cross-linked collagen scaffold (CCLCS) production in a Mexican context. For this purpose, three production capacities were simulated using SuperPro Designer® v 12.0: 5, 15, and 25 × 103 bovine pericardium units (BPU) per month as process feedstock. Data indicated that these capacities produced 2.5, 7.5, and 12.5 kg of biomesh per batch (per day), respectively. In addition, Net Unit Production Costs (NUPC) of 784.57, 458.94, and 388.26 $USD.kg−1 were obtained, correspondingly, with selling prices of 0.16 ± 0.078 USD.cm−2, 0.086 ± 0.043 USD.cm−2, and 0.069 ± 0.035 USD.cm−2, in the same order. We found that these selling prices were significantly lower than those in the current market in Mexico. Finally, distribution of costs associated with the process followed the order: raw materials > facility-dependent > labor > royalties > quality analysis/quality control (QA/QC) > utilities. The present study showed the feasibility of producing low-cost and highly profitable CCLCS with a relatively small investment. As a result, the circular bioeconomy may be stimulated. Full article
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Article
Scaffold Chemical Model Based on Collagen—Methyl Methacrylate Graft Copolymers
Polymers 2023, 15(12), 2618; https://doi.org/10.3390/polym15122618 - 08 Jun 2023
Cited by 2 | Viewed by 528
Abstract
Polymerization of methyl methacrylate (MMA) in aqueous collagen (Col) dispersion was studied in the presence of tributylborane (TBB) and p-quinone: 2,5-di-tert-butyl-p-benzoquinone (2,5-DTBQ), p-benzoquinone (BQ), duroquinone (DQ), and p-naphthoquinone (NQ). It was found that this system leads to the [...] Read more.
Polymerization of methyl methacrylate (MMA) in aqueous collagen (Col) dispersion was studied in the presence of tributylborane (TBB) and p-quinone: 2,5-di-tert-butyl-p-benzoquinone (2,5-DTBQ), p-benzoquinone (BQ), duroquinone (DQ), and p-naphthoquinone (NQ). It was found that this system leads to the formation of a grafted cross-linked copolymer. The inhibitory effect of p-quinone determines the amount of unreacted monomer, homopolymer, and percentage of grafted poly(methyl methacrylate) (PMMA). The synthesis combines two approaches to form a grafted copolymer with a cross-linked structure—“grafting to” and “grafting from”. The resulting products exhibit biodegradation under the action of enzymes, do not have toxicity, and demonstrate a stimulating effect on cell growth. At the same time, the denaturation of collagen occurring at elevated temperatures does not impair the characteristics of copolymers. These results allow us to present the research as a scaffold chemical model. Comparison of the properties of the obtained copolymers helps to determine the optimal method for the synthesis of scaffold precursors—synthesis of a collagen and poly(methyl methacrylate) copolymer at 60 °C in a 1% acetic acid dispersion of fish collagen with a mass ratio of the components collagen:MMA:TBB:2,5-DTBQ equal to 1:1:0.015:0.25. Full article
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Article
Properties of Bovine Collagen as Influenced by High-Pressure Processing
Polymers 2023, 15(11), 2472; https://doi.org/10.3390/polym15112472 - 26 May 2023
Viewed by 578
Abstract
The physical properties and structure of collagen treated with high-pressure technologies have not yet been investigated in detail. The main goal of this work was to determine whether this modern gentle technology significantly changes the properties of collagen. High pressure in the range [...] Read more.
The physical properties and structure of collagen treated with high-pressure technologies have not yet been investigated in detail. The main goal of this work was to determine whether this modern gentle technology significantly changes the properties of collagen. High pressure in the range of 0–400 MPa was used, and the rheological, mechanical, thermal, and structural properties of collagen were measured. The rheological properties measured in the area of linear viscoelasticity do not statistically significantly change due to the influence of pressure or the duration of pressure exposure. In addition, the mechanical properties measured by compression between two plates are not statistically significantly influenced by pressure value or pressure hold time. The thermal properties Ton and ∆H measured by differential calorimetry depend on pressure value and pressure hold time. Results from amino acids and FTIR analyses show that exposure of collagenous gels to high pressure (400 MPa), regardless of applied time (5 and 10 min), caused only minor changes in the primary and secondary structure and preserved collagenous polymeric integrity. SEM analysis did not show changes in collagen fibril ordering orientation over longer distances after applying 400 MPa of pressure for 10 min. Full article
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