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Tettey F, Saudi S, Davies D, Shrestha S, Johnson K, Fialkova S, Subedi K, Bastakoti BP, Sankar J, Desai S, Bhattarai N. Fabrication and Characterization of Zn Particle Incorporated Fibrous Scaffolds for Potential Application in Tissue Healing and Regeneration. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48913-48929. [PMID: 37847523 DOI: 10.1021/acsami.3c09793] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Zinc (Zn) metal and its alloys have received a lot of interest in biomedical applications due to their biodegradability, biocompatibility, antimicrobial activity, and ability to stimulate tissue regeneration. Bulk Zn has been successfully utilized in a variety of implant applications, most notably as bioabsorbable cardiac stents and orthopedic fixation devices, where it provides adequate mechanical properties while also releasing helpful Zn ions (Zn2+) during degradation. Such beneficial ions are dose-dependent and, when released in excess, can induce cellular toxicity. In this study, we hypothesize that embedding Zn metal particles into a polymer nanofibrous scaffold will enable control of the degradation and time release of the Zn2+. We designed and fabricated two polymer scaffolds, polycaprolactone (PCL) and polycaprolactone-chitosan (PCL-CH). Each scaffold had an increasing amount of Zn. Several physicochemical properties such as fiber morphology, crystallinity, mechanical strength, hydrophilicity, degradation and release of Zn2+, thermal properties, chemical compositions, and so forth were characterized and compared with the PCL fibrous scaffold. The biological properties of the scaffolds were evaluated in vitro utilizing direct and indirect cytotoxicity assays and cell viability. All the data show that the addition of Zn changed various physical properties of the PCL and PCL-CH scaffolds except their chemical structure. Further investigation reveals that the PCL-CH scaffolds degrade the Zn particles relatively faster than the PCL because the presence of the hydrophilic CH influences the faster release of Zn2+ in cell culture conditions as compared to the PCL fibrous scaffold. The combined advantages of CH and Zn in the PCL scaffold enriched 3T3 fibroblast cells' survival and proliferation except the ones with the higher concentration of Zn particles. These new composite scaffolds are promising and can be further considered for tissue healing and regeneration applications.
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Affiliation(s)
- Felix Tettey
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Department of Industrial and Systems Engineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Sheikh Saudi
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Dekonti Davies
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Department of Mechanical Engineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Sita Shrestha
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Kalene Johnson
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Svitlana Fialkova
- Department of Mechanical Engineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Kiran Subedi
- College of Agriculture and Environmental Sciences, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Bishnu P Bastakoti
- Department of Chemistry, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Jagannathan Sankar
- Department of Mechanical Engineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Salil Desai
- Department of Industrial and Systems Engineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
| | - Narayan Bhattarai
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
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2
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Teymori M, Karimi E, Saburi E. Evaluation of osteoconductive effect of polycaprolactone (PCL) scaffold treated with Aloe vera on adipose-derived mesenchymal stem cells (ADSCs). AMERICAN JOURNAL OF STEM CELLS 2023; 12:83-91. [PMID: 38021455 PMCID: PMC10658133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Adipose-derived mesenchymal stem cells (ADSCs) hold promise for bone tissue engineering because of their ability to differentiate into a variety of cell lineages. In tissue engineering, composite scaffolds made of natural and synthetic polymers have also attracted interest. Modification of scaffolds with various substances, including Aloe Vera, is expected to play a useful role in the repair of damaged tissues, including bone. METHOD ADSCs were isolated and seeded in three groups on an Aloe Vera-modified PCL scaffold: 1. Polycaprolactone (PCL) scaffold group, 2. PCL/Aloe Vera scaffold group, and 3. TCPS (Tissue Culture Polystyrene) group. Subsequently, staining with Oil red and Alizarin Red was performed to assess the ability of ADSCs to differentiate into fat and bone cells. Cell viability was determined by the resazurin assay on days 1, 3, and 5. Calcium content and alkaline phosphatase activity (ALP) were determined with kits on days 7, 14, and 21. RNA was extracted, and cDNA was synthesized. Finally, the expression of marker genes for bone differentiation like osteogenic markers such as Osteonectin (ON), Osteocalcin (OC), RUNX Family Transcription Factor 2 (RUNX2), Collagen type I alpha 1 (COL1) was evaluated by real-time PCR. RESULTS Aloe vera-treated PCL scaffolds showed improved biocompatibility compared with untreated scaffolds (P<0.05). In addition, treated scaffolds promoted osteogenic differentiation of ADSCs, as evidenced by increased expression of osteogenic markers such ON, OC, RUNX2, COL1 compared with PCL scaffold and TCPS (P<0.05). Furthermore, ALP and calcium content assay confirmed improved mineral deposition on PCL scaffolds treated with Aloe vera, indicating enhanced osteoconductivity (P<0.05). CONCLUSION Our data suggest that a PCL scaffold mixed with Aloe Vera gel has promising osteoconductive potential, which can be used as a natural polymer for tissue engineering of bone and promote bone regeneration.
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Affiliation(s)
- Maryam Teymori
- Department of Biology, Mashhad Branch, Islamic Azad UniversityMashhad, Iran
| | - Ehsan Karimi
- Department of Biology, Mashhad Branch, Islamic Azad UniversityMashhad, Iran
| | - Ehsan Saburi
- Medical Genetics Research Center, School of Medicine, Mashhad University of Medical SciencesMashhad, Iran
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical SciencesMashhad, Iran
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3
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Sharma A, Dheer D, Singh I, Puri V, Kumar P. Phytoconstituent-Loaded Nanofibrous Meshes as Wound Dressings: A Concise Review. Pharmaceutics 2023; 15:pharmaceutics15041058. [PMID: 37111544 PMCID: PMC10143731 DOI: 10.3390/pharmaceutics15041058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/12/2023] [Accepted: 03/16/2023] [Indexed: 03/29/2023] Open
Abstract
In the past, wounds were treated with natural materials, but modern wound dressings include functional elements to expedite the process of healing and to improve skin recovery. Due to their exceptional properties, nanofibrous wound dressings are now the most cutting-edge and desirable option. Similar in structure to the skin’s own extracellular matrix (ECM), these dressings can promote tissue regeneration, wound fluid transportation, and air ductility for cellular proliferation and regeneration owing to their nanostructured fibrous meshes or scaffolds. Many academic search engines and databases, such as Google Scholar, PubMed, and Sciencedirect, were used to conduct a comprehensive evaluation of the literature for the purposes of this investigation. Using the term “nanofibrous meshes” as a keyword, this paper focuses on the importance of phytoconstituents. This review article summarizes the most recent developments and conclusions from studies on bioactive nanofibrous wound dressings infused with medicinal plants. Several wound-healing methods, wound-dressing materials, and wound-healing components derived from medicinal plants were also discussed.
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Affiliation(s)
- Ameya Sharma
- Chitkara School of Pharmacy, Chitkara University, Baddi 174103, Himachal Pradesh, India
| | - Divya Dheer
- Chitkara School of Pharmacy, Chitkara University, Baddi 174103, Himachal Pradesh, India
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, Punjab, India
| | - Inderbir Singh
- Chitkara College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India
| | - Vivek Puri
- Chitkara School of Pharmacy, Chitkara University, Baddi 174103, Himachal Pradesh, India
- Correspondence: (V.P.); (P.K.)
| | - Pradeep Kumar
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2050, South Africa
- Correspondence: (V.P.); (P.K.)
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4
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Fadilah NIM, Phang SJ, Kamaruzaman N, Salleh A, Zawani M, Sanyal A, Maarof M, Fauzi MB. Antioxidant Biomaterials in Cutaneous Wound Healing and Tissue Regeneration: A Critical Review. Antioxidants (Basel) 2023; 12:antiox12040787. [PMID: 37107164 DOI: 10.3390/antiox12040787] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/21/2023] [Accepted: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
Natural-based biomaterials play an important role in developing new products for medical applications, primarily in cutaneous injuries. A large panel of biomaterials with antioxidant properties has revealed an advancement in supporting and expediting tissue regeneration. However, their low bioavailability in preventing cellular oxidative stress through the delivery system limits their therapeutic activity at the injury site. The integration of antioxidant compounds in the implanted biomaterial should be able to maintain their antioxidant activity while facilitating skin tissue recovery. This review summarises the recent literature that reported the role of natural antioxidant-incorporated biomaterials in promoting skin wound healing and tissue regeneration, which is supported by evidence from in vitro, in vivo, and clinical studies. Antioxidant-based therapies for wound healing have shown promising evidence in numerous animal studies, even though clinical studies remain very limited. We also described the underlying mechanism of reactive oxygen species (ROS) generation and provided a comprehensive review of ROS-scavenging biomaterials found in the literature in the last six years.
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5
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Pebdeni AB, Hosseini M, Barkhordari A. Smart fluorescence aptasensor using nanofiber functionalized with carbon quantum dot for specific detection of pathogenic bacteria in the wound. Talanta 2022; 246:123454. [DOI: 10.1016/j.talanta.2022.123454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 01/23/2023]
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6
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A review on structural and magnetic properties of magnesium ferrite nanoparticles. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00368-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sadek K, Mamdouh W, Habib SI, El Deftar M, Habib ANA. In Vitro Biological Evaluation of a Fabricated Polycaprolactone/Pomegranate Electrospun Scaffold for Bone Regeneration. ACS OMEGA 2021; 6:34447-34459. [PMID: 34963930 PMCID: PMC8697390 DOI: 10.1021/acsomega.1c04608] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Different scaffold biomaterials are being investigated as a solution for bone loss due to disease or trauma. The aim of this study is the fabrication, characterization, and in vitro biological evaluation of a novel polycaprolactone (PCL) nanoscaffold incorporating pomegranate peel extract (PG) for bone regeneration. Using electrospinning, three groups of scaffolds were prepared: the control group PCL and two groups of PCL with PG concentrations (11 and 18 weight %). The antioxidant activity and the total phenolic content (TPC) of the fabricated nanoscaffolds were evaluated, in addition to the porosity and degradation measurement. Cultured osteoblasts derived from rabbit bone marrow mesenchymal stem cells were used for the assessment of cell proliferation and attachment on the scaffold's surface. Scaffolds' characterization showed uniform nanofibers (NFs) with a fiber diameter range of 149-168 nm. Meanwhile, higher antioxidant activity and TPC of the PG groups were detected. Furthermore, total porosities of 59 and 62% were determined for the PCL-PG scaffolds. An increased degradation rate and significant improvement in cell proliferation and cell attachment were revealed for the PCL-PG fabricated scaffolds. Such incorporation of natural food waste, PG, in PCL NFs offered novel PCL-PG scaffolds as a promising candidate for bone regeneration applications.
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Affiliation(s)
- Khadiga
M. Sadek
- Biomaterials
Department, Faculty of Dentistry, Cairo
University, 11 El-Saraya
St.—Manial, Cairo, 11562 Cairo, Egypt
| | - Wael Mamdouh
- Department
of Chemistry, School of Sciences and Engineering (SSE), The American University in Cairo, AUC Avenue, 11835 New Cairo, Egypt
| | - Shaymaa I. Habib
- Biomaterials
Department, Faculty of Dentistry, Cairo
University, 11 El-Saraya
St.—Manial, Cairo, 11562 Cairo, Egypt
| | - Mervat El Deftar
- Pathology
Department, Tissue Culture Unit, National Cancer Institute, Cairo University, Kornish El-Nile, Fom El- Khaleg, 11796 Cairo, Egypt
| | - A. Nour A. Habib
- Biomaterials
Department, Faculty of Dentistry, Cairo
University, 11 El-Saraya
St.—Manial, Cairo, 11562 Cairo, Egypt
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Wang T, Hole C, Ren Z, Zhang P, Shi P, Zhu J, Luo H, Wang F, Sciau P. Morphological and structural study of crystals in black-to-brown glazes of Yaozhou ware (Song dynasty) using imaging and spectroscopic techniques. Ann Ital Chir 2021. [DOI: 10.1016/j.jeurceramsoc.2021.05.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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9
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Shoushrah SH, Transfeld JL, Tonk CH, Büchner D, Witzleben S, Sieber MA, Schulze M, Tobiasch E. Sinking Our Teeth in Getting Dental Stem Cells to Clinics for Bone Regeneration. Int J Mol Sci 2021; 22:6387. [PMID: 34203719 PMCID: PMC8232184 DOI: 10.3390/ijms22126387] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/27/2021] [Accepted: 06/02/2021] [Indexed: 12/12/2022] Open
Abstract
Dental stem cells have been isolated from the medical waste of various dental tissues. They have been characterized by numerous markers, which are evaluated herein and differentiated into multiple cell types. They can also be used to generate cell lines and iPSCs for long-term in vitro research. Methods for utilizing these stem cells including cellular systems such as organoids or cell sheets, cell-free systems such as exosomes, and scaffold-based approaches with and without drug release concepts are reported in this review and presented with new pictures for clarification. These in vitro applications can be deployed in disease modeling and subsequent pharmaceutical research and also pave the way for tissue regeneration. The main focus herein is on the potential of dental stem cells for hard tissue regeneration, especially bone, by evaluating their potential for osteogenesis and angiogenesis, and the regulation of these two processes by growth factors and environmental stimulators. Current in vitro and in vivo publications show numerous benefits of using dental stem cells for research purposes and hard tissue regeneration. However, only a few clinical trials currently exist. The goal of this review is to pinpoint this imbalance and encourage scientists to pick up this research and proceed one step further to translation.
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Affiliation(s)
| | | | | | | | | | | | | | - Edda Tobiasch
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig- Strasse. 20, 53359 Rheinbach, Germany; (S.H.S.); (J.L.T.); (C.H.T.); (D.B.); (S.W.); (M.A.S.); (M.S.)
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10
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Baskar S, Yuvaraj S, Partha Sarathi S, Sundararajan M, Chandra Sekhar D. Influence of Sr
2+
ion substitution on structural, morphological, optical, thermal, and magnetic behavior of MgFe
2
O
4
cubic spinel. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S Baskar
- PG & Research Department of Physics, Paavendhar College of Arts and Science Salem Tamil Nadu India
| | - S Yuvaraj
- Department of Physics, Loyola College of Arts and Science Namakkal Tamil Nadu India
| | - Subudhi Partha Sarathi
- Department of Electrical Engineering Konark Institute of Science and Technology, Techno Park Bhubaneswar Odisha India
| | - M Sundararajan
- PG & Research Department of Physics, Paavendhar College of Arts and Science Salem Tamil Nadu India
| | - Dash Chandra Sekhar
- Department of Electronics and Communication Engineering Centurion University of Technology and Management Bhubaneswar Odisha India
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Liang J, Cui L, Li J, Guan S, Zhang K, Li J. Aloe vera: A Medicinal Plant Used in Skin Wound Healing. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:455-474. [PMID: 33066720 DOI: 10.1089/ten.teb.2020.0236] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Skin injury is a major problem threatening human physical and mental health, and how to promote wound healing has been the focus. Developing new wound dressings is an important strategy in skin regeneration. Aloe vera is a medicinal plant with a long history, complex constituents, and various pharmacological activities. Many studies have shown that A. vera plays an important role in promoting wound healing. Adding A. vera to wound dressing has become an ideal way. This review will describe the process of skin injury and wound healing and analyze the role of A. vera in wound healing. In addition, the types of wound dressing and the applications of A. vera in wound dressing will be discussed.
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Affiliation(s)
- Jiaheng Liang
- School of Life Science, Zhengzhou University, Zhengzhou, P.R. China
| | - Longlong Cui
- School of Life Science, Zhengzhou University, Zhengzhou, P.R. China
| | - Jiankang Li
- School of Life Science, Zhengzhou University, Zhengzhou, P.R. China
| | - Shuaimeng Guan
- School of Life Science, Zhengzhou University, Zhengzhou, P.R. China
| | - Kun Zhang
- School of Life Science, Zhengzhou University, Zhengzhou, P.R. China
| | - Jingan Li
- School of Materials Science and Engineering and Henan Key Laboratory of Advanced Magnesium Alloy, Zhengzhou University, Zhengzhou, P.R. China
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12
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Marrazzo P, O’Leary C. Repositioning Natural Antioxidants for Therapeutic Applications in Tissue Engineering. Bioengineering (Basel) 2020; 7:E104. [PMID: 32887327 PMCID: PMC7552777 DOI: 10.3390/bioengineering7030104] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 12/15/2022] Open
Abstract
Although a large panel of natural antioxidants demonstrate a protective effect in preventing cellular oxidative stress, their low bioavailability limits therapeutic activity at the targeted injury site. The importance to deliver drug or cells into oxidative microenvironments can be realized with the development of biocompatible redox-modulating materials. The incorporation of antioxidant compounds within implanted biomaterials should be able to retain the antioxidant activity, while also allowing graft survival and tissue recovery. This review summarizes the recent literature reporting the combined role of natural antioxidants with biomaterials. Our review highlights how such functionalization is a promising strategy in tissue engineering to improve the engraftment and promote tissue healing or regeneration.
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Affiliation(s)
- Pasquale Marrazzo
- Department for Life Quality Studies, Alma Mater Studiorum, University of Bologna, Corso d’Augusto 237, 47921 Rimini (RN), Italy
| | - Cian O’Leary
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland (RCSI), 123 St Stephen’s Green, 2 D02 Dublin, Ireland;
- Science Foundation Ireland Advanced Materials and Bioengineering (AMBER) Centre, RCSI, 2 D02 Dublin, Ireland
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13
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Mohammadzadeh L, Rahbarghazi R, Salehi R, Mahkam M. A novel egg-shell membrane based hybrid nanofibrous scaffold for cutaneous tissue engineering. J Biol Eng 2019; 13:79. [PMID: 31673286 PMCID: PMC6815433 DOI: 10.1186/s13036-019-0208-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/23/2019] [Indexed: 01/17/2023] Open
Abstract
Background The main issue in cutaneous regeneration is to develop engineered scaffolds based on natural extracellular matrix to promote dynamics of skin progenitor cells and accelerate differentiation into mature keratinocytes. Methods In this study, nanofibrous scaffolds composed of a blend poly (ɛ-caprolactone) (PCL), silk fibroin (SF), soluble eggshell membrane (SESM), and Aloe vera (AV) gel were developed by electrospinning method and human basal cells were used to examine differentiation capacity toward keratinocyte-like cells. For this propose, cells were allocated to four distinct groups; control, PCL/SF, PCL/SF/SESM, and PCL/SF/SESM/AV. In all groups, cells were incubated with differentiation medium. Morphology, composition, hydrophilicity and mechanical features of PCL/SF, PCL/SF/SESM and PCL/SF/SESM/AV nanofibers were studied by scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FT-IR), water contact angle and tensile tests. To examine the orientation of basal cells to mature keratinocytes, we performed immunofluorescence analysis by monitoring cytokeratin-19. The expression of genes such as involucrin, keratin-14 and -5 was monitored by real-time PCR assay. Results PCL/SF, PCL/SF/SESM, and PCL/SF/SESM/AV had suitable physic chemical indices and biological activities to be applied as biomimetic scaffolds for the restoration cutaneous tissue. Compared to control, we found an increased basal cell proliferation at 7 and 14 days after plating on scaffolds and reach maximum levels in group PCL/SF/SESM/AV on day 14 (p < 0.05). Electron microscopy showed cell flattening, morphological adaptation. An integrated cell-to-cell connection was generated after cell seeding on scaffolds in all groups. Immunofluorescence imaging showed the ability of basal cells to synthesize cytokeratin-19 in PCL/SF, PCL/SF/SESM, and positive control cells after exposure to differentiation medium. However, these values were less in PCL/SF/SESM/AV compared to other groups. Real-time PCR analysis showed the potency of all scaffolds to induce the transcription of involucrin, keratin-14 and -5, especially involucrin in PCL/SF/SESM/AV group compared to the negative control. Conclusion Modulation of scaffolds with natural biopolymers could enable us to synthesize structures appropriate for cutaneous regeneration.
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Affiliation(s)
- Leila Mohammadzadeh
- 1Chemistry Department, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Reza Rahbarghazi
- 2Stem Cell research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Salehi
- 3Drug Applied Research Center and Department of Medical Nanotechnology, Faculty of Advanced Medical Science, Tabriz University of Medical Science, Tabriz, Iran
| | - Mehrdad Mahkam
- 1Chemistry Department, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz, Iran
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14
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Multi-Functional Electrospun Nanofibers from Polymer Blends for Scaffold Tissue Engineering. FIBERS 2019. [DOI: 10.3390/fib7070066] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Electrospinning and polymer blending have been the focus of research and the industry for their versatility, scalability, and potential applications across many different fields. In tissue engineering, nanofiber scaffolds composed of natural fibers, synthetic fibers, or a mixture of both have been reported. This review reports recent advances in polymer blended scaffolds for tissue engineering and the fabrication of functional scaffolds by electrospinning. A brief theory of electrospinning and the general setup as well as modifications used are presented. Polymer blends, including blends with natural polymers, synthetic polymers, mixture of natural and synthetic polymers, and nanofiller systems, are discussed in detail and reviewed.
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15
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Gupta A, Kim BS. Shape Memory Polyurethane Biocomposites Based on Toughened Polycaprolactone Promoted by Nano-Chitosan. NANOMATERIALS 2019; 9:nano9020225. [PMID: 30736481 PMCID: PMC6410130 DOI: 10.3390/nano9020225] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 01/31/2019] [Accepted: 02/04/2019] [Indexed: 11/16/2022]
Abstract
The distinctive ability to remember their original form after partial or complete deformation makes shape memory polymers remarkable materials for several engineering and biomedical applications. In the present work, the development of a polycaprolactone based toughened shape memory polyurethane biocomposite promoted by in situ incorporation of chitosan flakes has been demonstrated. The chitosan flakes were homogeneously present in the polymer matrix in the form of nanoflakes, as confirmed by the electron microscopic analysis and probably developed a crosslinked node that promoted toughness (a > 500% elongation at break) and led to a ~130% increment in ultimate tensile strength, as analyzed using a universal testing machine. During a tensile pull, X-ray analysis revealed the development of crystallites, which resulted from a stress induced crystallization process that may retain the shape and melting of the crystallites stimulating shape recovery (with a ~100% shape recovery ratio), even after permanent deformation. The biodegradable polyurethane biocomposite also demonstrates relatively high thermal stability (Tmax at ~360 °C). The prepared material possesses a unique shape memory behavior, even after permanent deformation up to a > 500% strain, which may have great potential in several biomedical applications.
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Affiliation(s)
- Arvind Gupta
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Korea.
| | - Beom Soo Kim
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Korea.
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16
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Moradi SL, Golchin A, Hajishafieeha Z, Khani M, Ardeshirylajimi A. Bone tissue engineering: Adult stem cells in combination with electrospun nanofibrous scaffolds. J Cell Physiol 2018; 233:6509-6522. [DOI: 10.1002/jcp.26606] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 03/16/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Sadegh L. Moradi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Ali Golchin
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Zahra Hajishafieeha
- Department of Microbiology Qazvin University of Medical Sciences Qazvin Iran
| | - Mohammad‐Mehdi Khani
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Abdolreza Ardeshirylajimi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
- Edward A. Doisy Department of Biochemistry and Molecular Biology Saint Louis University School of Medicine Saint Louis MO
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