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Aguilar-Vázquez R, Romero-Montero A, Del Prado-Audelo ML, Cariño-Calvo L, González-Del Carmen M, Vizcaíno-Dorado PA, Caballero-Florán IH, Peña-Corona SI, Chávez-Corona JI, Bernad-Bernad MJ, Magaña JJ, Cortés H, Leyva-Gómez G. Biopolymeric Insulin Membranes for Antimicrobial, Antioxidant, and Wound Healing Applications. Pharmaceutics 2024; 16:1012. [PMID: 39204356 PMCID: PMC11360745 DOI: 10.3390/pharmaceutics16081012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/12/2024] [Accepted: 07/26/2024] [Indexed: 09/04/2024] Open
Abstract
Delayed wound healing increases the wound's vulnerability to possible infections, which may have lethal outcomes. The treatments available can be effective, but the urgency is not fully encompassed. The drug repositioning strategy proposes effective alternatives for enhancing medical therapies for chronic diseases. Likewise, applying wound dressings as biodegradable membranes is extremely attractive due to their ease of application, therapeutic effectiveness, and feasibility in industrial manufacturing. This article aims to demonstrate the pleiotropic effects during insulin repositioning in wound closure by employing a biopolymeric membrane-type formulation with insulin. We prepared biopolymeric membranes with sodium alginate cross-linked with calcium chloride, supported in a mixture of xanthan gum and guar gum, and plasticized with glycerol and sorbitol. Human insulin was combined with poloxamer 188 as a protein stabilizing agent. Our investigation encompassed physicochemical and mechanical characterization, antioxidant and biological activity through antibacterial tests, cell viability assessments, and scratch assays as an in vitro and in vivo wound model. We demonstrated that our biopolymeric insulin membranes exhibited adequate manipulation and suitable mechanical resistance, transparency, high swelling capability (1100%), and 30% antioxidant activity. Furthermore, they exhibited antibacterial activity (growth inhibition of S. aureus at 85% and P. aeruginosa at 75%, respectively), and insulin promoted wound closure in vitro with a 5.5-fold increase and 72% closure at 24 h. Also, insulin promoted in vivo wound closure with a 3.2-fold increase and 92% closure at 10 days compared with the groups without insulin, and this is the first report that demonstrates this therapeutic effect with two administrations of 0.7 IU. In conclusion, we developed a multifunctional insulin-loaded biopolymeric membrane in this study, with the main activity derived from insulin's role in wound closure and antioxidant activity, augmented by the antimicrobial effect attributed to the polymer poloxamer 188. The synergistic combination of excipients enhances its usefulness and highlights our innovation as a promising material in wound healing materials.
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Affiliation(s)
- Rocío Aguilar-Vázquez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (R.A.-V.); (A.R.-M.); (S.I.P.-C.); (J.I.C.-C.); (M.J.B.-B.)
| | - Alejandra Romero-Montero
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (R.A.-V.); (A.R.-M.); (S.I.P.-C.); (J.I.C.-C.); (M.J.B.-B.)
| | - María L. Del Prado-Audelo
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Ciudad de Mexico, Ciudad de Mexico 14380, Mexico; (M.L.D.P.-A.); (I.H.C.-F.); (J.J.M.)
| | | | | | - Pablo Adrián Vizcaíno-Dorado
- Laboratorio de Medicina Genómica, Departamento de Genómica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México 14389, Mexico; (P.A.V.-D.); (H.C.)
| | - Isaac Hiram Caballero-Florán
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Ciudad de Mexico, Ciudad de Mexico 14380, Mexico; (M.L.D.P.-A.); (I.H.C.-F.); (J.J.M.)
| | - Sheila Iraís Peña-Corona
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (R.A.-V.); (A.R.-M.); (S.I.P.-C.); (J.I.C.-C.); (M.J.B.-B.)
| | - Juan Isaac Chávez-Corona
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (R.A.-V.); (A.R.-M.); (S.I.P.-C.); (J.I.C.-C.); (M.J.B.-B.)
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica, Universidad Nacional Autónoma de México-FESC, Campus 1, Cuautitlán Izcalli 54714, Mexico
| | - María Josefa Bernad-Bernad
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (R.A.-V.); (A.R.-M.); (S.I.P.-C.); (J.I.C.-C.); (M.J.B.-B.)
| | - Jonathan J. Magaña
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Ciudad de Mexico, Ciudad de Mexico 14380, Mexico; (M.L.D.P.-A.); (I.H.C.-F.); (J.J.M.)
- Laboratorio de Medicina Genómica, Departamento de Genómica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México 14389, Mexico; (P.A.V.-D.); (H.C.)
| | - Hernán Cortés
- Laboratorio de Medicina Genómica, Departamento de Genómica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México 14389, Mexico; (P.A.V.-D.); (H.C.)
| | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico; (R.A.-V.); (A.R.-M.); (S.I.P.-C.); (J.I.C.-C.); (M.J.B.-B.)
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México 04510, Mexico
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Özcolak B, Erenay B, Odabaş S, Jandt KD, Garipcan B. Effects of bone surface topography and chemistry on macrophage polarization. Sci Rep 2024; 14:12721. [PMID: 38830871 PMCID: PMC11148019 DOI: 10.1038/s41598-024-62484-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 05/17/2024] [Indexed: 06/05/2024] Open
Abstract
Surface structure plays a crucial role in determining cell behavior on biomaterials, influencing cell adhesion, proliferation, differentiation, as well as immune cells and macrophage polarization. While grooves and ridges stimulate M2 polarization and pits and bumps promote M1 polarization, these structures do not accurately mimic the real bone surface. Consequently, the impact of mimicking bone surface topography on macrophage polarization remains unknown. Understanding the synergistic sequential roles of M1 and M2 macrophages in osteoimmunomodulation is crucial for effective bone tissue engineering. Thus, exploring the impact of bone surface microstructure mimicking biomaterials on macrophage polarization is critical. In this study, we aimed to sequentially activate M1 and M2 macrophages using Poly-L-Lactic acid (PLA) membranes with bone surface topographical features mimicked through the soft lithography technique. To mimic the bone surface topography, a bovine femur was used as a model surface, and the membranes were further modified with collagen type-I and hydroxyapatite to mimic the bone surface microenvironment. To determine the effect of these biomaterials on macrophage polarization, we conducted experimental analysis that contained estimating cytokine release profiles and characterizing cell morphology. Our results demonstrated the potential of the hydroxyapatite-deposited bone surface-mimicked PLA membranes to trigger sequential and synergistic M1 and M2 macrophage polarizations, suggesting their ability to achieve osteoimmunomodulatory macrophage polarization for bone tissue engineering applications. Although further experimental studies are required to completely investigate the osteoimmunomodulatory effects of these biomaterials, our results provide valuable insights into the potential advantages of biomaterials that mimic the complex microenvironment of bone surfaces.
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Affiliation(s)
- Birgün Özcolak
- Biomimetic and Bioinspired Biomaterials Research Laboratory, Institute of Biomedical Engineering, Boğaziçi University, 34684, Istanbul, Turkey
- Department of Biomedical Engineering, School of Engineering and Natural Sciences, Istanbul Medipol University, 34810, Istanbul, Turkey
| | - Berkay Erenay
- Biomimetic and Bioinspired Biomaterials Research Laboratory, Institute of Biomedical Engineering, Boğaziçi University, 34684, Istanbul, Turkey
| | - Sedat Odabaş
- Biomaterials and Tissue Engineering Laboratory (bteLAB), Department of Chemistry, Faculty of Science, Ankara University, 06560, Ankara, Turkey
- Interdisciplinary Research Unit for Advanced Materials (INTRAM), Ankara University, 06560, Ankara, Turkey
| | - Klaus D Jandt
- Chair of Materials Science (CMS), Otto Schott Institute of Materials Research, Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743, Jena, Germany
| | - Bora Garipcan
- Biomimetic and Bioinspired Biomaterials Research Laboratory, Institute of Biomedical Engineering, Boğaziçi University, 34684, Istanbul, Turkey.
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Shi X, Si W, Zhu J, Zhang S. Boosting the Electrical Performance of PLA-Based Triboelectric Nanogenerators for Sustainable Power Sources and Self-Powered Sensing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307620. [PMID: 38009487 DOI: 10.1002/smll.202307620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/31/2023] [Indexed: 11/29/2023]
Abstract
Triboelectric nanogenerators (TENGs) have emerged as a promising technology for harvesting mechanical energy from the ambient environment. However, developing tribopositive materials with strong piezoelectric effects and high electron-donating ability still remains a challenge. Herein, poly(ethylene glycol) monomethyl ether (mPEG) to soft poly(lactic acid) (PLA) is adopted, then PLA/mPEG nanofibers are fabricated under electrospinning and used as the tribopositive material for fabricating robust power density TENGs. The crystallinity and dynamic mechanical properties of PLA/mPEG nanofibers are investigated. The results revealed that the incorporation of mPEG provided an effective approach to elevate the electron-donating ability and charge transfer efficiency in PLA. The PLA/mPEG-based TENGs achieved a high open-circuit voltage of 342.8 V, a short-circuit current of 38.5 µA, and a maximum power density of 116.21 W m-2 over a 2 cm2 contact area at an external load of 106 Ω, respectively. Strikingly, excellent stability and durability are demonstrated after continuous cycles up to 104 cycles. Noteworthy, the TENGs are explored for self-powered sensing applications, with seven TENG units integrated to act as self-powered sensors playing music through buzzers when pressed by fingers. Eventually, this work provides new insights into tuning the structures and properties of electrospun polymers to reinforce the TENG output and self-powered systems.
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Affiliation(s)
- Xingxing Shi
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
- Institute of Emergent Elastomers, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Wanjie Si
- Institute of Emergent Elastomers, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Jingyi Zhu
- Institute of Emergent Elastomers, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Shuidong Zhang
- Institute of Emergent Elastomers, South China University of Technology, Guangzhou, Guangdong, 510640, China
- Guangdong Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology, Guangzhou, 510640, China
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Zhu W, Li W, Yao M, Wang Y, Zhang W, Li C, Wang X, Chen W, Lv H. Mineralized Collagen/Polylactic Acid Composite Scaffolds for Load-Bearing Bone Regeneration in a Developmental Model. Polymers (Basel) 2023; 15:4194. [PMID: 37896438 PMCID: PMC10610794 DOI: 10.3390/polym15204194] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/23/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Repairing load-bearing bone defects in children remains a big clinical challenge. Mineralized collagen (MC) can effectively simulate natural bone composition and hierarchical structure and has a good biocompatibility and bone conductivity. Polylactic acid (PLA) is regarded as a gold material because of its mechanical properties and degradability. In this study, we prepare MC/PLA composite scaffolds via in situ mineralization and freeze-drying. Cell, characterization, and animal experiments compare and evaluate the biomimetic properties and repair effects of the MC/PLA scaffolds. Phalloidin and DAPI staining results show that the MC/PLA scaffolds are not cytotoxic. CCK-8 and scratch experiments prove that the scaffolds are superior to MC and hydroxyapatite (HA)/PLA scaffolds in promoting cell proliferation and migration. The surface and interior of the MC/PLA scaffolds exhibit rich interconnected pore structures with a porosity of ≥70%. The XRD patterns are typical HA waveforms. X-ray, micro-CT, and H&E staining reveal that the defect boundary disappears, new bone tissue grows into MC/PLA scaffolds in a large area, and the scaffolds are degraded after six months of implantation. The MC/PLA composite scaffold has a pore structure and composition similar to cancellous bone, with a good biocompatibility and bone regeneration ability.
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Affiliation(s)
- Wenbo Zhu
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Wenjing Li
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Mengxuan Yao
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Yan Wang
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Wei Zhang
- Department of Pathology, Hebei Medical University, No. 361 Zhongshan Road, Shijiazhuang 050017, China;
| | - Chao Li
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, No. 30 Shuangqing Road, Beijing 100084, China;
| | - Wei Chen
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Hongzhi Lv
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
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Vascular Endothelial Growth Factor-Capturing Aligned Electrospun Polycaprolactone/Gelatin Nanofibers Promote Patellar Ligament Regeneration. Acta Biomater 2022; 140:233-246. [PMID: 34852300 DOI: 10.1016/j.actbio.2021.11.040] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 11/21/2021] [Accepted: 11/24/2021] [Indexed: 01/11/2023]
Abstract
Ligament injuries are common in sports and other rigorous activities. It is a great challenge to achieve ligament regeneration after an injury due the avascular structure and low self-renewal capability. Herein, we developed vascular endothelial growth factor (VEGF)-binding aligned electrospun poly(caprolactone)/gelatin (PCL/Gel) scaffolds by incorporating prominin-1-binding peptide (BP) sequence and exploited them for patellar ligament regeneration. The adsorption of BP onto scaffolds was discerned by various techniques, such as Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and confocal laser scanning microscope. The accumulation of VEGF onto scaffolds correlated with the concentration of the peptide in vitro. BP-anchored PCL/Gel scaffolds (BP@PCL/Gel) promoted the tubular formation of human umbilical vein endothelial cells (HUVECs) and wound healing in vitro. Besides, BP containing scaffolds exhibited higher content of CD31+ cells than that of the control scaffolds at 1 week after implantation in vivo. Moreover, BP containing scaffolds improved biomechanical properties and facilitated the regeneration of matured collagen in patellar ligament 4 weeks after implantation in mice. Overall, this strategy of peptide-mediated orchestration of VEGF provides an enticing platform for the ligament regeneration, which may also have broad implications for tissue repair applications. STATEMENT OF SIGNIFICANCE: Ligament injuries are central to sports and other rigorous activities. Given to the avascular nature and poor self-healing capability of injured ligament tissues, it is a burgeoning challenge to fabricate tissue-engineered scaffolds for ligament reconstruction. Vascular endothelial growth factor (VEGF) is pivotal to the neo-vessel formation. However, the high molecular weight of VEGF as well as its short half-life in vitro and in vivo limits its therapeutic potential. To circumvent these limitations, herein, we functionalized aligned electrospun polycaprolactone/gelatin (PCL/Gel)-based scaffolds with VEGF-binding peptide (BP) and assessed their biocompatibility and performance in vitro and in vivo. BP-modified scaffolds accumulated VEGF, improved tube formation of HUVECs, and induced wound healing in vitro, which may have broad implications for regenerative medicine and tissue engineering.
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Advances in amphiphilic polylactide/vinyl polymer based nano-assemblies for drug delivery. Adv Colloid Interface Sci 2021; 294:102483. [PMID: 34274723 DOI: 10.1016/j.cis.2021.102483] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/28/2021] [Accepted: 07/02/2021] [Indexed: 01/14/2023]
Abstract
Micelles from self-assembled amphiphilic copolymers are highly attractive in drug delivery, due to their small size and hydrophilic stealth corona allowing prolonged lifetimes in the bloodstream and thus improved drug bioavailability. Polylactide (PLA)-based amphiphilic copolymer micelles are key candidates in this field, owing to the well-established biodegradability and biocompatibility of PLA. While PLA-b-poly(ethylene glycol) (PEG) block copolymer micelles can be seen as the "gold standard" in drug delivery research so far, the progresses in controlled radical polymerizations (Atom Transfer Radical Polymerization, Reversible Addition-Fragmentation Transfer and Nitroxide Mediated Polymerization) have offered new opportunities in the design of advanced amphiphilic copolymers for drug delivery due to their flexibility in many regards: (i) they can be easily combined with ring-opening polymerization (ROP) of lactide, with a diversity in types of architectures (e.g., block, graft, star), (ii) they allow (co)polymerization of a wide range of vinyl monomers, possibly circumventing PEG limitations, (iii) functionalization (with biomolecules or stimuli-cleavable moieties) is versatile due to end-group fidelity and copolymerization ability with reactive/functional comonomers. In this review, we report on the advances in the past decade of such amphiphilic PLA/vinyl polymer based nano-carriers, regarding key properties such as stealth character, cell targeting and stimuli-responsiveness.
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Chi HY, Chan V, Li C, Hsieh JH, Lin PH, Tsai YH, Chen Y. Fabrication of polylactic acid/paclitaxel nano fibers by electrospinning for cancer therapeutics. BMC Chem 2020; 14:63. [PMID: 33111062 PMCID: PMC7585315 DOI: 10.1186/s13065-020-00711-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/17/2020] [Indexed: 12/19/2022] Open
Abstract
Polylactic acid (PLA) is a thermoplastic and biodegradable polyester, largely derived from renewable resources such as corn starch, cassava starch and sugarcane. However, PLA is only soluble in a narrow range of solvents such as tetrahydrofuran, dioxane, chlorinated solvents and heated benzene. The limited choices of solvent for PLA dissolution have imposed significant challenges in the development of specifically engineered PLA nanofibers with electrospinning techniques. Generally, the electrospun polymeric materials have been rendered with unique properties such as high porosity and complex geometry while maintaining its biodegradability and biocompatibility for emerging biomedical applications. In this study, a new anticancer drug delivery system composed of PLA nanofibers with encapsulated paclitaxel was developed by the electrospinning of the respective nanofibers on top of a spin-coated thin film with the same chemical compositions. Our unique approach is meant for promoting strong bonding between PLA-based nanofibers and their respective films in order to improve the prolonged release properties and composite film stability within a fluctuative physiochemical environment during cell culture. PLA/paclitaxel nanofiber supported on respective polymeric films were probed by scanning electronic microscope, Fourier transform infrared spectrometer and water contact measurement for determining their surface morphologies, fibers’ diameters, molecular vibrational modes, and wettability, respectively. Moreover, PLA/paclitaxel nanofibers supported on respective spin-coated films at different loadings of paclitaxel were evaluated for their abilities in killing human colorectal carcinoma cells (HCT-116). More importantly, MTT assays showed that regardless of the concentrations of paclitaxel, the growth of HCT-116 was effectively inhibited by the prolonged release of paclitaxel from PLA/paclitaxel nanofibers. An effective prolonged delivery system of paclitaxel based on PLA nanofiber-based film has demonstrated exciting potentials for emerging applications as implantable drug delivery patch in post-surgical cancer eradication.
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Affiliation(s)
- H Y Chi
- Division of Cardiovascular Surgery, Department of Surgery, Taoyuan Armed Forces General Hospital, Taoyuan, 32551 Taiwan.,Department of Biomedical Engineering, National Yang Ming University, Taipei, 11221 Taiwan
| | - Vincent Chan
- Department of Biomedical Engineering, Khalifa University, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - Chuan Li
- Department of Biomedical Engineering, National Yang Ming University, Taipei, 11221 Taiwan
| | - J H Hsieh
- Department of Materials Engineering, Ming Chi University of Technology, Taishan, New Taipei City, 24301 Taiwan
| | - P H Lin
- Department of Biomedical Engineering, National Yang Ming University, Taipei, 11221 Taiwan
| | - Ya-Hui Tsai
- Department of Surgery, Far Eastern Memorial Hospital, Banqiao, New Taipei City, 22060 Taiwan
| | - Yun Chen
- Department of Surgery, Far Eastern Memorial Hospital, Banqiao, New Taipei City, 22060 Taiwan
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Perez-Puyana V, Jiménez-Rosado M, Romero A, Guerrero A. Fabrication and Characterization of Hydrogels Based on Gelatinised Collagen with Potential Application in Tissue Engineering. Polymers (Basel) 2020; 12:E1146. [PMID: 32429544 PMCID: PMC7284593 DOI: 10.3390/polym12051146] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 01/08/2023] Open
Abstract
Regenerative medicine is increasingly focused on the development of biomaterials that facilitate cell adhesion and proliferation through the use of natural polymers, which have better biocompatibility and biodegradability. In this way, the use of hydrogels has been considered as a potential option for tissue engineering due to their physical and chemical characteristics. However, few studies associate the raw materials properties and processing conditions with the final characteristics of hydrogels, which could condition their use as scaffolds for tissue engineering. In this context, the main objective of this work was the evaluation of type I collagen as raw material for the elaboration of hydrogels. In addition, gelation time, pH and temperature were evaluated as the most influential variables in the hydrogel processing method by rheological (time, strain and frequency sweep tests) and microstructural (Cryo-SEM) measurements. The results indicate that it is possible to obtain collagen hydrogels with adequate rheological and microstructural characteristics by selecting optimal processing conditions. However, further studies are necessary to assess their suitability for cell accommodation and growth.
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Affiliation(s)
- Victor Perez-Puyana
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; (V.P.-P.); (A.R.)
| | - Mercedes Jiménez-Rosado
- Departamento de Ingeniería Química, Escuela Politécnica Superior, Universidad de Sevilla, 41011 Sevilla, Spain;
| | - Alberto Romero
- Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; (V.P.-P.); (A.R.)
| | - Antonio Guerrero
- Departamento de Ingeniería Química, Escuela Politécnica Superior, Universidad de Sevilla, 41011 Sevilla, Spain;
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Durán IR, Vanslambrouck S, Chevallier P, Hoesli CA, Laroche G. Atmospheric pressure cold plasma versus wet-chemical surface treatments for carboxyl functionalization of polylactic acid: A first step toward covalent immobilization of bioactive molecules. Colloids Surf B Biointerfaces 2020; 189:110847. [PMID: 32086024 DOI: 10.1016/j.colsurfb.2020.110847] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 01/07/2020] [Accepted: 02/04/2020] [Indexed: 12/12/2022]
Abstract
The use of polylactic acid (PLA) has attracted growing interest, particularly in recent years, for biomedical applications because of its mechanical properties, biocompatibility, and biodegradability. Despite this, features such as surface hydrophobicity and the absence of suitable functional groups for covalent immobilization of bioactive molecules, make it challenging to endow PLA-based medical devices with additional features and thus broaden their range of applicability. In the present study, we demonstrate the suitability of atmospheric pressure dielectric barrier discharges operating in the Townsend regime as a promising alternative to other surface treatments, such as diazonium and alkali hydrolytic treatments, for carboxyl functionalization of PLA. Chemical changes in PLA surfaces are evaluated by contact angle measurements and by X-ray photoelectron spectroscopy while physical changes are investigated by scanning electron microscopy and atomic force microscopy. The amount of carboxyl groups generated on PLA surfaces is assessed by toluidine blue O assay and substantiated by grafting, through carboxyl groups, a fluorescent probe containing amino functionalities. All of the surface treatments have proven to be very effective in generating carboxylic groups on the PLA surface. Nevertheless, plasma treatment is shown to not degrade the PLA surface, in sharp contrast with diazonium and alkali hydrolytic treatments.
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Affiliation(s)
- Iván Rodríguez Durán
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada
| | - Stéphanie Vanslambrouck
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada
| | - Pascale Chevallier
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada
| | - Corinne A Hoesli
- Stem Cell Bioprocessing Laboratory, Department of Chemical Engineering, McGill University, Wong Building, 3610 University Street, Montreal, H3A 0C5, Canada
| | - Gaétan Laroche
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada.
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10
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Ravindran Girija A, Palaninathan V, Strudwick X, Balasubramanian S, Dasappan Nair S, Cowin AJ. Collagen-functionalized electrospun smooth and porous polymeric scaffolds for the development of human skin-equivalent. RSC Adv 2020; 10:26594-26603. [PMID: 35515800 PMCID: PMC9055397 DOI: 10.1039/d0ra04648e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/07/2020] [Indexed: 01/22/2023] Open
Abstract
Electrospun polymer fibers have garnered substantial importance in regenerative medicine owing to their intrinsic 3D topography, extracellular matrix microenvironment, biochemical flexibility, and mechanical support. In particular, a material's nano-topography can have a significant effect on cellular responses, including adhesion, proliferation, differentiation, and migration. In this study, poly(l-lactic acid) (PLLA), a biodegradable polymer with excellent biocompatibility was electrospun into fibers with either smooth or porous topologies. The scaffolds were further modified and biofunctionalized with 0.01% and 0.1% collagen to enhance bioactivity and improve cellular interactions. Human keratinocytes (HaCaTs) and fibroblasts (human foreskin fibroblasts-HFF) were cultured on the scaffolds using a modified co-culture technique, where keratinocytes were grown on the dorsal plane for 5 days, followed by flipping, seeding with fibroblasts on the ventral plane and culturing for a further 5 days. Following this, cellular adhesion of the skin cells on both the unmodified and collagen-modified scaffolds (smooth and porous) was performed using scanning electron microscopy (SEM) and immunofluorescence. Distinct outcomes were observed with the unmodified smooth scaffolds showing superior cell adhesion than the porous scaffolds. Modification of the porous and smooth scaffolds with 0.1% collagen enhanced the adhesion and migration of both keratinocytes and fibroblasts to these scaffolds. Further, the collagen-modified scaffolds (both porous and smooth) produced confluent and uniform epidermal sheets of keratinocytes on one plane with healthy fibroblasts populated within the scaffolds. Thus, presenting a vast potential to serve as a self-organized skin substitute this may be a promising biomaterial for development as a dressing for patients suffering from wounds. Collagen-functionalized electrospun smooth and porous poly(l-lactide) scaffolds supporting keratinocytes and fibroblasts as a potential model to serve as self-organized skin substitute.![]()
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Affiliation(s)
| | | | - Xanthe Strudwick
- Future Industries Institute
- University of South Australia
- Adelaide
- Australia
| | | | | | - Allison J. Cowin
- Future Industries Institute
- University of South Australia
- Adelaide
- Australia
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11
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Boonpavanitchakul K, Jarussophon S, Pimpha N, Kangwansupamonkon W, Magaraphan R. Silk sericin as a bio-initiator for grafting from synthesis of polylactide via ring-opening polymerization. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109265] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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12
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Biomimetic Properties of Force-Spun PHBV Membranes Functionalised with Collagen as Substrates for Biomedical Application. COATINGS 2019. [DOI: 10.3390/coatings9060350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The force-spinning process parameters (i.e., spin speed, spinneret-collector distance, and polymer concentration), optimised and characterised in previous work by this group, allowed the rapid fabrication of large quantities of high surface area poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) (PHBV) polymeric fibre membranes. This paper examined the potential application for force-spun PHBV fibres functionalised with type I collagen for tissue regeneration applications. PHBV fibre scaffolds provide a biologically suitable substrate to guide the regeneration of dermal tissues, however, have poor cellular adhesion properties. The grafting of collagen type-I to PHBV fibres demonstrated improved cell adhesion and growth in Neo-NHDF (neonatal human dermal fibroblasts) fibroblasts. The examination of fibre morphology, thermal properties, collagen content, and degradability was used to contrast the physicochemical properties of the PHBV and PHBV-Collagen fibres. Biodegradation models using phosphate buffered saline determined there was no appreciable change in mass over the course of 6 weeks; a Sirius Red assay was performed on degraded samples, showing no change in the quantity of collagen. Cell metabolism studies showed an increase in cell metabolism on conjugated samples after three and 7 days. In addition, in vitro cytocompatibility studies demonstrated superior cell activity and adhesion on conjugated samples over 7 days.
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13
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Vázquez N, Sánchez-Arévalo F, Maciel-Cerda A, Garnica-Palafox I, Ontiveros-Tlachi R, Chaires-Rosas C, Piñón-Zarate G, Herrera-Enríquez M, Hautefeuille M, Vera-Graziano R, Castell-Rodríguez A. Influence of the PLGA/gelatin ratio on the physical, chemical and biological properties of electrospun scaffolds for wound dressings. ACTA ACUST UNITED AC 2019; 14:045006. [PMID: 30959495 DOI: 10.1088/1748-605x/ab1741] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Chronic wounds are a global health problem, and their treatments are difficult and long lasting. The development of medical devices through tissue engineering has been conducted to heal this type of wound. In this study, it was demonstrated that the combination of natural and synthetic polymers, such as poly (D-L lactide-co-glycolide) (PLGA) and gelatin (Ge), were useful for constructing scaffolds for wound healing. The aim of this study was to evaluate the influence of different PLGA/gelatin ratios (9:1, 7:3 and 5:5 (v/v)) on the physical, chemical and biological properties of electrospun scaffolds for wound dressings. These PLGA/Ge scaffolds had randomly oriented fibers with smooth surfaces and exhibited distances between fibers of less than 10 μm. The 7:3 and 5:5 PLGA/Ge scaffolds showed higher swelling, hydrophilicity and degradation rates than pure PLGA and 9:1 (v/v) PLGA/Ge scaffolds. Young's moduli of the scaffolds were 72 ± 10, 48 ± 6, 58 ± 6 and 6 ± 1 MPa for the pure PLGA scaffold and the 9:1, 7:3 and 5:5 (v/v) PLGA/Ge scaffolds, respectively. Mesenchymal stem cells (MSCs) seeded on all the PLGA/Ge scaffolds were viable, and the cells were attached to the fibers at the different analyzed timepoints. The most significant proliferation rate was observed for cells on the 7:3 PLGA/Ge scaffolds. Biocompatibility analysis showed that all the scaffolds produced inflammation at the first week postimplantation; however, the 7:3 and 5:5 (v/v) PLGA/Ge scaffolds were degraded completely, and there was no inflammatory reaction observed at the fourth week after implantation. In contrast, the 9:1 PLGA/Ge scaffolds persisted in the tissue for more than four weeks; however, at the eighth week, no traces of the scaffolds were found. In conclusion, the scaffolds with the 7:3 PLGA/Ge ratio showed suitable physical, chemical and biological properties for applications in chronic wound treatments.
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Affiliation(s)
- Nadia Vázquez
- Facultad de Medicina, UNAM, Ciudad de México, C.P. 04510, México
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14
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Khatami N, Khoshfetrat AB, Khaksar M, Zamani ARN, Rahbarghazi R. Collagen‐alginate‐nano‐silica microspheres improved the osteogenic potential of human osteoblast‐like MG‐63 cells. J Cell Biochem 2019; 120:15069-15082. [DOI: 10.1002/jcb.28768] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 03/14/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Neda Khatami
- Chemical Engineering Faculty Sahand University of Technology Tabriz Iran
| | | | - Majid Khaksar
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
| | | | - Reza Rahbarghazi
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
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15
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Rapa M, Darie-Nita RN, Preda P, Coroiu V, Tatia R, Vasile C, Matei E, Predescu AM, Maxim ME. PLA/collagen hydrolysate/silver nanoparticles bionanocomposites for potential antimicrobial urinary drains. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2019.1603999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Maria Rapa
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, Bucharest, Romania
| | - Raluca Nicoleta Darie-Nita
- Department of Physical Chemistry of Polymers, „Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
| | - Petruta Preda
- Laboratory for Micro- and Nano- Fluidics, National Institute for Research and Development in Microtechnologies, Voluntari, Romania
| | - Viorica Coroiu
- Cellular and Molecular Biology, National Institute of Research and Development for Biological Sciences, Bucharest, Romania
| | - Rodica Tatia
- Cellular and Molecular Biology, National Institute of Research and Development for Biological Sciences, Bucharest, Romania
| | - Cornelia Vasile
- Department of Physical Chemistry of Polymers, „Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
| | - Ecaterina Matei
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, Bucharest, Romania
| | - Andra Mihaela Predescu
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, Bucharest, Romania
| | - Monica-Elisabeta Maxim
- Department of Colloids, Institute of Physical Chemistry “Ilie Murgulescu”, Bucharest, Romania
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16
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Effect of hydrolyzed collagen on thermal, mechanical and biological properties of poly(lactic acid) bionanocomposites. IRANIAN POLYMER JOURNAL 2019. [DOI: 10.1007/s13726-019-00694-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Riaz T, Zeeshan R, Zarif F, Ilyas K, Muhammad N, Safi SZ, Rahim A, Rizvi SAA, Rehman IU. FTIR analysis of natural and synthetic collagen. APPLIED SPECTROSCOPY REVIEWS 2018; 53:703-746. [DOI: 10.1080/05704928.2018.1426595] [Citation(s) in RCA: 242] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
Affiliation(s)
- Tehseen Riaz
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Rabia Zeeshan
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Faiza Zarif
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Kanwal Ilyas
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Nawshad Muhammad
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Sher Zaman Safi
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Abdur Rahim
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Syed A. A. Rizvi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, Florida, USA
| | - Ihtesham Ur Rehman
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
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18
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Lin CW, Chen YK, Lu M, Lou KL, Yu J. Photo-Crosslinked Keratin/Chitosan Membranes as Potential Wound Dressing Materials. Polymers (Basel) 2018; 10:E987. [PMID: 30960912 PMCID: PMC6403811 DOI: 10.3390/polym10090987] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/28/2018] [Accepted: 08/28/2018] [Indexed: 12/25/2022] Open
Abstract
In this study, we combined two kinds of natural polymers, chitosan and keratin, to develop a portable composite membrane via UV irradiation. UV-crosslinking without an additional chemical agent makes the fabrication more ideal by reducing reactants and avoiding residual toxic chemicals. This novel composite could perform synergistic functions benefitting from chitosan and keratin; including a strong mechanical strength, biodegradability, biocompatibility, better cell adhesion, and proliferation characteristics. Furthermore, compared with our previous research, this keratin-chitosan composite membrane was improved in that it was made to be portable, enabling it to be versatile and have various applications in vitro and in vivo. Based on these facts, this innovative composite membrane has high potential for serving as an outstanding candidate for wound healing or other biomedical applications.
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Affiliation(s)
- Che-Wei Lin
- Institute of Biotechnology, National Taiwan University, Taipei 10617, Taiwan.
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Yi-Kai Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Min Lu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Kuo-Long Lou
- Institute of Biotechnology, National Taiwan University, Taipei 10617, Taiwan.
| | - Jiashing Yu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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19
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Łopusiewicz Ł, Jędra F, Mizielińska M. New Poly(lactic acid) Active Packaging Composite Films Incorporated with Fungal Melanin. Polymers (Basel) 2018; 10:E386. [PMID: 30966422 PMCID: PMC6415272 DOI: 10.3390/polym10040386] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/23/2018] [Accepted: 03/27/2018] [Indexed: 12/21/2022] Open
Abstract
In this work, fungal melanin was used for the first time to prepare poly(lactic acid)-based composites. The films of various melanin concentrations (0.025%, 0.05% and 0.2% w/w) were prepared using an extrusion method. The mechanical, antioxidant, antimicrobial, water vapor and UV-Vis barrier properties, as well as available polyphenolics on the surface, were studied. FT-IR and Raman spectroscopy studies were carried out to analyze the chemical composition of the resulting films. The hydrophobicity, color response, thermal, optical properties, and opacity values were also determined. The results of this study show that the addition of fungal melanin to poly(lactic acid) (PLA) as a modifier influenced mechanical and water vapor barrier properties depending on melanin concentration. In low concentration, melanin enhanced the mechanical and barrier properties of the modified films, but in larger amounts, the properties were decreased. The UV-Vis barrier properties of PLA/melanin composites were marginally improved. Differential Scanning Calorimetry (DSC) analysis indicated that crystallinity of PLA increased by the addition of melanin, but this did not affect the thermal stability of the films. Modified PLA/melanin films showed good antioxidant activity and were active against Enterococcus faecalis, Pseudomonas aeruginosa and Pseudomonas putida. The addition of melanin caused changes in color values, decreasing lightness and increasing the redness and yellowness of films. Based on the results of this study, fungal melanin has good potential to be exploited as a value-added modifier that can improve the overall properties of PLA.
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Affiliation(s)
- Łukasz Łopusiewicz
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
| | - Filip Jędra
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
| | - Małgorzata Mizielińska
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
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20
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Sadeghi-Avalshahr AR, Khorsand-Ghayeni M, Nokhasteh S, Molavi AM, Naderi-Meshkin H. Synthesis and characterization of PLGA/collagen composite scaffolds as skin substitute produced by electrospinning through two different approaches. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:14. [PMID: 27995492 DOI: 10.1007/s10856-016-5789-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
Skin damage can occur for many reasons, including burns and injuries, which in extreme cases can even lead to death. Different methods such as electrospinning are used to produce scaffolds used in skin tissue engineering. Natural and synthetic polymers were used in this method. It was observed that the use of both natural and synthetic polymers gives better results for cell culturing rather than using of each material solely. In this study, scaffolds of poly(lactic-co-glycolic acid) and collagen were prepared using coating and common solvent methods. The characteristics of samples were evaluated through scanning electron microscopy, porosimetry, mechanical testing, degradation behavior, and in vitro assays. The mechanical and biocompatibility test results of the scaffold prepared by coating method were better than the other one. However, the degradation rate of the common solvent was nearly five times more than coating sample that leads to cytotoxicity in contact with the skin cells.
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Affiliation(s)
- Ali Reza Sadeghi-Avalshahr
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, Iran.
| | - Mohammad Khorsand-Ghayeni
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, Iran
| | - Samira Nokhasteh
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, Iran
| | - Amir Mahdi Molavi
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, Iran
- Materials Engineering Department, Tarbiat Modares University, Tehran, Iran
| | - Hojjat Naderi-Meshkin
- Stem Cell and Regenerative Medicine Research Department, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, Iran
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21
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Stoleru E, Munteanu BS, Darie-Niţă RN, Pricope GM, Lungu M, Irimia A, Râpă M, Lipşa RD, Vasile C. Complex poly(lactic acid)-based biomaterial for urinary catheters: II. Biocompatibility. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2016. [DOI: 10.1680/jbibn.15.00012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The present paper is focused on the surface and bulk characterization of poly(lactic acid) (PLA)-based composites that contain hydrolyzed collagen as a biological polymer, silver nanoparticles and vitamin E and epoxidized soybean oil as a plasticizer. The bionanocomposites were obtained by melt processing and evaluated for structural and surface characteristics, biocompatibility, functional properties such as antimicrobial and antioxidant activity and hydrolytic degradation behavior. It has been established that the optimal composition to impart functional properties to the PLA matrix is a formulation containing 15% epoxidized soybean oil, 15% hydrolyzed collagen, 5% Pluronic, 5% vitamin E and 0·3% silver nanoparticles. This bionanocomposite inhibits the growth of both Gram-positive bacteria, Escherichia coli and Salmonella typhimurium, and Gram-negative bacteria, Listeria monocytogenes, and reaches 100% radical-scavenging activity. The PLA-based biomaterials obtained in this study are stable in biological media in the short and medium terms and therefore are recommended as multifunctional biomaterials for the manufacture of medical devices, such as urinary catheters.
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Affiliation(s)
- Elena Stoleru
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | | | | | - Gina M. Pricope
- Veterinary and the Food Safety Laboratory, Food Safety Department, Iași, Romania
| | - Maria Lungu
- National Institute for Biological Sciences, Bucharest, Romania
| | - Anamaria Irimia
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Maria Râpă
- S.C. ICPE BISTRITA S.A., Bistrița, Romania
| | - Rodica D. Lipşa
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Cornelia Vasile
- Petru Poni Institute of Macromolecular Chemistry, Iași, Romania
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22
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Darie-Niţă RN, Munteanu BS, Tudorachi N, Lipşa R, Stoleru E, Spiridon I, Vasile C. Complex poly(lactic acid)-based biomaterial for urinary catheters: I. Influence of AgNP on properties. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2016. [DOI: 10.1680/jbibn.15.00011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The present study focused on the development of biocompatible antimicrobial/antioxidant biodegradable bionanocomposite renewable resources based on poly(lactic acid) (PLA) plasticised with epoxidised soybean oil. To the main PLA matrix hydrolysed collagen (HC) (to enhance biocompatibility), vitamin E (as antioxidant agent) and silver (Ag) nanoparticles (NPs) (for imparting antimicrobial properties for medical applications and also for active packaging) were incorporated. The blends were produced by using the classical technological flow of melt processing. The presence of the additives in the PLA matrix improved the processability and flexibility and slightly decreased the thermal properties. The specific interactions of silver NPs with the other components of nanocomposites, mainly with HC protein and vitamin E (by ionic and other types of secondary bonds), led to a better HC and vitamin E dispersion in the samples with a higher silver content (1·5%), which further caused the enhancement of the mechanical properties for high silver NP concentration. Therefore, the silver NPs were successfully embedded into the polymer matrix. The aim of this research was to improve the flexibility, biocompatibility and functionality of PLA and to obtain bionanocomposites destined for medical applications such as catheters. This first part of research deals with mechanical and thermal characterisation correlated with morphological features.
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Affiliation(s)
| | | | - Niţă Tudorachi
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Rodica Lipşa
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Elena Stoleru
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Iuliana Spiridon
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Cornelia Vasile
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
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Lih E, Park KW, Chun SY, Kim H, Kwon TG, Joung YK, Han DK. Biomimetic Porous PLGA Scaffolds Incorporating Decellularized Extracellular Matrix for Kidney Tissue Regeneration. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21145-21154. [PMID: 27456613 DOI: 10.1021/acsami.6b03771] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Chronic kidney disease is now recognized as a major health problem, but current therapies including dialysis and renal replacement have many limitations. Consequently, biodegradable scaffolds to help repairing injured tissue are emerging as a promising approach in the field of kidney tissue engineering. Poly(lactic-co-glycolic acid) (PLGA) is a useful biomedical material, but its insufficient biocompatibility caused a reduction in cell behavior and function. In this work, we developed the kidney-derived extracellular matrix (ECM) incorporated PLGA scaffolds as a cell supporting material for kidney tissue regeneration. Biomimetic PLGA scaffolds (PLGA/ECM) with different ECM concentrations were prepared by an ice particle leaching method, and their physicochemical and mechanical properties were characterized through various analyses. The proliferation of renal cortical epithelial cells on the PLGA/ECM scaffolds increased with an increase in ECM concentrations (0.2, 1, 5, and 10%) in scaffolds. The PLGA scaffold containing 10% of ECM has been shown to be an effective matrix for the repair and reconstitution of glomerulus and blood vessels in partially nephrectomized mice in vivo, compared with only PLGA control. These results suggest that not only can the tissue-engineering techniques be an effective alternative method for treatment of kidney diseases, but also the ECM incorporated PLGA scaffolds could be promising materials for biomedical applications including tissue engineered scaffolds and biodegradable implants.
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Affiliation(s)
- Eugene Lih
- Center for Biomaterials, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
| | - Ki Wan Park
- Center for Biomaterials, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Sogang University , Seoul 04107, Republic of Korea
| | - So Young Chun
- Department of Urology, School of Medicine, Kyungpook National University , Daegu 41566, Republic of Korea
| | - Hyuncheol Kim
- Department of Chemical and Biomolecular Engineering, Sogang University , Seoul 04107, Republic of Korea
| | - Tae Gyun Kwon
- Department of Urology, School of Medicine, Kyungpook National University , Daegu 41566, Republic of Korea
| | - Yoon Ki Joung
- Center for Biomaterials, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
- Department of Biomedical Engineering, Korea University of Science and Technology , Daejeon 34113, Republic of Korea
| | - Dong Keun Han
- Center for Biomaterials, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
- Department of Biomedical Engineering, Korea University of Science and Technology , Daejeon 34113, Republic of Korea
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Grafting collagen on poly (lactic acid) by a simple route to produce electrospun scaffolds, and their cell adhesion evaluation. Tissue Eng Regen Med 2016; 13:375-387. [PMID: 30603419 DOI: 10.1007/s13770-016-9097-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/13/2015] [Accepted: 11/17/2015] [Indexed: 12/20/2022] Open
Abstract
Increasing bioactivity and mechanical properties of polymers to produce more suitable scaffold for tissue engineering is a recurrent goal in the development of new biomedical materials. In this study, collagen-functionalized poly (lactic acid), PLA, was obtained by means of a simple grafting route, and electrospun scaffolds were produced to grow cells in vitro; their bioactivity was compared with scaffolds made of physical blends of PLA and collagen. Grafting was verified via nuclear magnetic resonance, attenuated total reflection-Fourier transform infrared and X-ray photoelectron spectroscopy. The cell adhesion performance of the scaffolds was studied using macrophages. Elastic modulus (74.7 megapascals) and tensile strength (3.0 megapascals) of the scaffold made from PLA grafted with collagen were substantially higher than the scaffolds made from physical blends of collagen and PLA: 32 and 2.16 megapascals, respectively, implying a more resistant material because of the chemical bond of the polypeptide to PLA. Besides, the fibers had more uniform diameter without defects. Scaffolds made from PLA grafted with collagen presented four-fold increase in cell adhesion than those of PLA blended with collagen. Furthermore, cell spreading within the scaffolds occurred only when collagen-functionalized poly (lactic acid) was used. These results open a new option for the easy tailoring of nanofiber-based scaffolds in three dimensions for tissue engineering.
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