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Biomimetic electrospun scaffolds from main extracellular matrix components for skin tissue engineering application – The role of chondroitin sulfate and sulfated hyaluronan. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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53
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Long-acting and broad-spectrum antimicrobial electrospun poly (ε-caprolactone)/gelatin micro/nanofibers for wound dressing. J Colloid Interface Sci 2017; 509:275-284. [PMID: 28915485 DOI: 10.1016/j.jcis.2017.08.092] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/24/2017] [Accepted: 08/29/2017] [Indexed: 12/19/2022]
Abstract
Trimethoxysilylpropyl octadecyldimethyl ammonium chloride (QAS), which forms facile bonds with hydroxyl groups, acts asa cationic antibacterial agent. In this work, QAS was introduced into a polycaprolactone (PCL)/gelatin hybrid in increasing concentrations to fabricate a long-acting and broad-spectrum antimicrobial micro/nanofiber membrane as a novel wound dressing. The physical interactions and chemical bonding between QAS/PCL and QAS/gelatin were demonstrated by infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS. Measured water contact angle between the PCL-gelatin/QAS (PG-Q) nanofiber membranes suggested a hydrophobic surface, which has been shown to aid in removal of wound dressings. The mechanical strength of the membranes was sufficient to meet the clinical requirements. Furthermore, the 15% QAS (PG-Q15) and 20% QAS (PG-Q20) formulated nanofiber membranes showed a considerable increase in their bacteriostatic activity towards Staphylococcus aureus (gram-positive) and Pseudomonas aeruginosa (gram-negative) bacteria, suggesting a broad-spectrum bactericidal effect by the PG-Q membranes. The PG-Q membranes with various QAS formulations demonstrated little cytotoxicity. Therefore, the long-acting and broad-spectrum antimicrobial electrospun PG-Q micro/nanofibers membrane demonstrate potential efficacy asan antibacterial wound dressing.
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Srivastava M, Ahlawat N, Srivastava A. Amniotic Fluid Stem Cells: A New Era in Regenerative Medicine. J Obstet Gynaecol India 2017; 68:15-19. [PMID: 29391670 DOI: 10.1007/s13224-017-1034-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/03/2017] [Indexed: 02/07/2023] Open
Abstract
Regenerative medicine has become an emerging field which focuses on repair, replacement or regeneration of cells, tissues and the entire organs. The regeneration may occur in patient's own body by using their system as a bioreactor, e.g., cell therapy that involves transplantation of stem cells capable of proliferating, differentiating and replacing damaged host cells. As the field of regenerative medicine advances, and sources of stem cells has been intensified. Though embryonic and adult tissues can be used for isolation of pluripotent stem cells, the amniotic fluid (AF) has been proposed as an alternative source of stem cells for tissue regeneration. AF cells could be banked and used for either allogeneic or autologous transplantation.
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Affiliation(s)
- Mala Srivastava
- 1Institute of Obstetrics and Gynaecology, Sir Ganga Ram Hospital, New Delhi, India
| | - Neha Ahlawat
- 1Institute of Obstetrics and Gynaecology, Sir Ganga Ram Hospital, New Delhi, India
| | - Ankita Srivastava
- Department of Obstetrics and Gynaecology, Lok Nayak Jay Prakash Hospital, New Delhi, India
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Kim JW, Kim MJ, Ki CS, Kim HJ, Park YH. Fabrication of bi-layer scaffold of keratin nanofiber and gelatin-methacrylate hydrogel: Implications for skin graft. Int J Biol Macromol 2017; 105:541-548. [PMID: 28711618 DOI: 10.1016/j.ijbiomac.2017.07.067] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 07/06/2017] [Accepted: 07/11/2017] [Indexed: 11/30/2022]
Abstract
Bi-layer scaffold composed of human hair keratin/chitosan nanofiber mat and gelatin methacrylate (GelMA) hydrogel was fabricated by using electrospinning and photopolymerization techniques. To prepare the nanofiber layer, the blend solution of human hair keratin and chitosan (mixture ratio: 5/5) was electrospun using formic acid as a solvent in the presence of poly(ethylene glycol), followed by cross-linking with glutaraldehyde. The tensile strength of the human hair keratin/chitosan nanofiber mat was much higher than that of pure human hair keratin nanofiber mat. Meanwhile, the blend nanofiber mat was relatively more compatible with HaCaT cell proliferation and keratinocyte differentiation than the pure chitosan nanofiber mat. The bi-layer scaffold was prepared by photopolymerization of GelMA under the cross-linked nanofiber mat. To evaluate the feasibility as a skin graft, human fibroblast was encapsulated in the hydrogel layer and HaCaT cells were cultured on the nanofiber layer and they were co-cultured for 10days. As a result, the encapsulated fibroblasts proliferated in the hydrogel matrix and HaCaT cells formed a cell layer on the top of scaffold, mimicking dermis and epidermis of skin tissue.
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Affiliation(s)
- Jong Wook Kim
- Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Min Jin Kim
- Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Chang Seok Ki
- Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyun Jeong Kim
- Department of Dental Anesthesiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Young Hwan Park
- Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea.
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Jeong KH, Park D, Lee YC. Polymer-based hydrogel scaffolds for skin tissue engineering applications: a mini-review. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1278-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hanauer N, Latreille PL, Banquy X. Mechanistic Insights into the Directed Assembly of Hydrogel Blocks Mediated by Polyelectrolytes or Microgels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3864-3870. [PMID: 28318268 DOI: 10.1021/acs.langmuir.7b00924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, we report the directed assembly of hydrogel blocks mediated by electrostatic interactions. We compared two different assembly mechanisms, one mediated by microgel particles and another mediated by direct interaction between oppositely charged blocks. The system consisted of hydrogel blocks made of an interpenetrated network of (hydroxyethyl)methacrylate-poly(ethylene glycol)dimethacrylate (HEMA-PEGDMA) and either positively charged polyethylenimine (PEI) or negatively charged hyaluronic acid (HA). Positively charged hydrogel blocks were pretreated with negatively charged microgel particles (MG) made of N-isopropylacrylamide-methacrylic acid. Both systems (PEI/HA and PEI/MG) demonstrated spontaneous directed assembly, meaning that positive blocks were systematically found in contact with oppositely charged blocks. Directed assembly in water of PEI/HA blocks resulted in large and open aggregates, while PEI/MG blocks exhibited more compact aggregates. Effects of salt and pH were also assessed for both systems. Inhibition of blocks aggregation was found to appear above a critical salt concentration (CSalt*) which was significantly higher for the PEI/HA system (80 mM) compared to the PEI/MG system (5-20 mM). The observed difference was interpreted in terms of the nanostructure of the contact area between blocks. Blocks aggregation was also found to be controlled by the content of negatively charged groups in the microgels as well as the concentration of MG in the suspension (CMG) used to treat the hydrogel block surfaces. Our results shine light on the subtle differences underlying the adhesion mechanisms between hydrogel blocks and suggest new routes toward the design of innovative complex soft materials.
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Affiliation(s)
- Nicolas Hanauer
- Canada Research Chair in Bio-inspired Materials and Interfaces, Faculty of Pharmacy, Université de Montréal C.P. 6128, succursale Centre Ville, Montréal, QC H3C 3J7, Canada
| | - Pierre Luc Latreille
- Canada Research Chair in Bio-inspired Materials and Interfaces, Faculty of Pharmacy, Université de Montréal C.P. 6128, succursale Centre Ville, Montréal, QC H3C 3J7, Canada
| | - Xavier Banquy
- Canada Research Chair in Bio-inspired Materials and Interfaces, Faculty of Pharmacy, Université de Montréal C.P. 6128, succursale Centre Ville, Montréal, QC H3C 3J7, Canada
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Nano-silver-decorated microfibrous eggshell membrane: processing, cytotoxicity assessment and optimization, antibacterial activity and wound healing. Sci Rep 2017; 7:436. [PMID: 28348388 PMCID: PMC5428678 DOI: 10.1038/s41598-017-00594-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 03/07/2017] [Indexed: 02/07/2023] Open
Abstract
An ideal wound dressing can both promote wound healing and prevent bacterial infection. Here, we report a potential dressing prepared by incorporating an optimized concentration of silver nanoparticles (AgNPs) into the microfibers of a natural eggshell membrane (EM) using environmentally friendly and mussel-inspired dopamine. Briefly, acid-treated EM was used as a porous membrane for polydopamine-reduced AgNPs synthesis. To obtain the optimal cytocompatible silver concentration, cellular attachment and MTT assay were performed with different concentrations of AgNPs. The morphology of the EM and AgNPs was confirmed by scanning electronic microscopy, scanning transmission electronic microscopy and Fourier transform infrared spectroscopy. The synthesized EM/AgNPs exhibited steady and safe AgNPs release, which was further tested for antibacterial activity against Escherichia coli and Staphylococcus aureus by disc diffusion method and bacterial suspension assay. Finally, in a murine full-thickness skin wound model, we found that EM/AgNPs could promote re-epithelialization, granulation tissue formation and wound healing via enhancing cell proliferation, as demonstrated by the expression of proliferating cell nuclear antigen (PCNA), and controlling inflammation response, as demonstrated by the expression of interleukin-1β (IL-1β). These findings suggest that EM/AgNPs may have a promising application in wound management.
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Kadia BM, Dimala CA, Aroke D, Ekabe CJ, Kadia RSM, Mefire AC. A prospective analysis of pinch grafting of chronic leg ulcers in a series of elderly patients in rural Cameroon. BMC DERMATOLOGY 2017; 17:4. [PMID: 28320360 PMCID: PMC5360079 DOI: 10.1186/s12895-017-0056-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/16/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND Chronic leg ulcers (CLUs) pose serious public health concerns worldwide. They mainly affect the elderly population. Pinch grafting (PG) could be used to treat a variety of CLUs. However, in Cameroon, there is scarce data on the outcome of PG of CLUs in elderly patients in rural hospitals where most of these patients seek for medical attention and where clinicians rely on unconventional wound dressing methods to treat CLUs. Our objective was to describe the outcome of PG of CLUs in elderly patients in rural Cameroon. METHODS This was a prospective study conducted in a rural hospital of North West Cameroon. From February 2015 to January 2016, comprehensive historical and clinical data were collected per elderly patient who presented with a chronic leg ulcer necessitating PG. PG was done using a simple procedure and each patient followed up for 8 months. Outcome was described in terms of ulcer healing and pain and donor site complications. RESULTS Our series included 13 patients: 8 males (61.54%; 95% CI: 31.58-86.14) and 5 females (38.46%; 95% CI: 13.86-68.42) aged from 69 to 88 years (mean: 77.54 ± 5.70 years). Three patients (23.08%; 95% CI: 5.04-53.81) had associated co-morbidities. All the ulcers were unilateral with durations ranging from 7 to 41 months (mean: 19.46 ± 11.03 months). The ulcers ranged in size from 9.0 to 38.1 cm2 (mean: 17.66 ± 8.35 cm 2). We registered one (7.69%; 95% CI: 0.19-36.03) graft rejection. Concerning the other ulcers, ten (83.33%; 95% CI: 51.59-97.91) had healed after 12 postoperative weeks while 2 (16.67%; 95% CI: 2.09%-48.41) had healed after 14 postoperative weeks and the mean healing time was 12.33 ± 0.78 weeks. Patients with healed ulcers had reduced ulcer site pain from the immediate postoperative period but there was no significant difference in the mean pain scores before and after graft (6.77 against 4.23, p = 0.13). These ulcers remained healed after 8 postoperative months. Each donor site had healed 2 weeks after PG. Donor site problems were minimal and included hypopigmentation. CONCLUSION The outcome of PG of CLUs in our series of older patients was satisfactory. This finding does not discount the role of conservative therapy, but we encourage clinicians in rural Cameroon to consider PG over long-term unconventional conservative therapy in the elderly.
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Affiliation(s)
- Benjamin Momo Kadia
- Presbyterian General Hospital Acha-Tugi, Acha-Tugi, Cameroon
- Grace Community Health and Development Association, Kumba, Cameroon
| | - Christian Akem Dimala
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical medicine, London, UK
- Health and Human Development (2HD) Research Group, Douala, Cameroon
- Department of Orthopaedics, Southend University Hospital, Essex, UK
| | - Desmond Aroke
- Health and Human Development (2HD) Research Group, Douala, Cameroon
| | | | | | - Alain Chichom Mefire
- Department of Surgery and Obstetrics/Gynaecology, Faculty of Health Sciences, University of Buea, Buea, Cameroon
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A Conditioned Medium of Umbilical Cord Mesenchymal Stem Cells Overexpressing Wnt7a Promotes Wound Repair and Regeneration of Hair Follicles in Mice. Stem Cells Int 2017; 2017:3738071. [PMID: 28337222 PMCID: PMC5350397 DOI: 10.1155/2017/3738071] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/25/2016] [Accepted: 10/05/2016] [Indexed: 01/19/2023] Open
Abstract
Mesenchymal stem cells (MSCs) can affect the microenvironment of a wound and thereby accelerate wound healing. Wnt proteins act as key mediators of skin development and participate in the formation of skin appendages such as hair. The mechanisms of action of MSCs and Wnt proteins on skin wounds are largely unknown. Here, we prepared a Wnt7a-containing conditioned medium (Wnt-CM) from the supernatant of cultured human umbilical cord-MSCs (UC-MSCs) overexpressing Wnt7a in order to examine the effects of this CM on cutaneous healing. Our results revealed that Wnt-CM can accelerate wound closure and induce regeneration of hair follicles. Meanwhile, Wnt-CM enhanced expression of extracellular matrix (ECM) components and cell migration of fibroblasts but inhibited the migratory ability and expression of K6 and K16 in keratinocytes by enhancing expression of c-Myc. However, we found that the CM of fibroblasts treated with Wnt-CM (HFWnt-CM-CM) can also promote wound repair and keratinocyte migration; but there was no increase in the number of hair follicles of regeneration. These data indicate that Wnt7a and UC-MSCs have synergistic effects: they can accelerate wound repair and induce hair regeneration via cellular communication in the wound microenvironment. Thus, this study opens up new avenues of research on the mechanisms underlying wound repair.
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Singh RS, Kaur N, Rana V, Kennedy JF. Recent insights on applications of pullulan in tissue engineering. Carbohydr Polym 2016; 153:455-462. [DOI: 10.1016/j.carbpol.2016.07.118] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/29/2016] [Accepted: 07/29/2016] [Indexed: 12/20/2022]
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Park IS, Chung PS, Ahn JC. Angiogenic Synergistic Effect of Adipose-Derived Stromal Cell Spheroids with Low-Level Light Therapy in a Model of Acute Skin Flap Ischemia. Cells Tissues Organs 2016; 202:307-318. [DOI: 10.1159/000445710] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2016] [Indexed: 11/19/2022] Open
Abstract
Human adipose-derived mesenchymal stem cells (hASCs) are an attractive cell source for tissue engineering. However, one obstacle to this approach is that the transplanted hASC population can decline rapidly in the recipient tissue. The aim of this study was to investigate the effects of low-level light therapy (LLLT) on transplanted spheroid hASCs in skin flaps of mice. hASCs were cultured in monolayers or spheroids. LLLT, hASCs, spheroids and spheroids transplanted with LLLT were applied to the skin flaps. Healing of the skin flaps was assessed by gross evaluation and by hematoxylin and eosin staining and elastin van Gieson staining. Compared with the spheroid group, skin flap healing was enhanced in the spheroid + LLLT group, including the neovascularization and regeneration of skin appendages. The survival of hASCs was enhanced by decreased apoptosis of hASCs in the skin flaps of the spheroid + LLLT group. The secretion of growth factors was stimulated in the spheroid + LLLT group compared with the ASC and spheroid groups. These data suggest that LLLT was an effective biostimulator of spheroid hASCs in the skin flaps, enhancing the survival of hASCs and stimulating the secretion of growth factors.
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63
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Gu Q, Zhu H, Li J, Li X, Hao J, Wallace GG, Zhou Q. Three-dimensional bioprinting speeds up smart regenerative medicine. Natl Sci Rev 2016. [DOI: 10.1093/nsr/nww037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Abstract
Biological materials can actively participate in the formation of bioactive organs and can even control cell fate to form functional tissues that we name as the smart regenerative medicine (SRM). The SRM requires interdisciplinary efforts to finalize the pre-designed organs. Three-dimensional (3D) printing, as an additive manufacturing technology, has been widely used in various fields due to its high resolution and individuation. In SRM, with the assistance of 3D printing, cells and biomaterials could be precisely positioned to construct complicated tissues. This review summarizes the state of the SRM advances and focuses in particular on the 3D printing application in biofabrication. We further discuss the issues of SRM development and finally propose some approaches for future 3D printing, which involves SRM.
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Affiliation(s)
- Qi Gu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, NSW 2522, Australia
| | - He Zhu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jing Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xia Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jie Hao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, NSW 2522, Australia
| | - Qi Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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Gurtner GC, Chapman MA. Regenerative Medicine: Charting a New Course in Wound Healing. Adv Wound Care (New Rochelle) 2016; 5:314-328. [PMID: 27366592 PMCID: PMC4900191 DOI: 10.1089/wound.2015.0663] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/13/2015] [Indexed: 12/13/2022] Open
Abstract
Significance: Chronic wounds are a prevalent and costly problem in the United States. Improved treatments are needed to heal these wounds and prevent serious complications such as infection and amputation. Recent Advances: In wound healing, as in other areas of medicine, technologies that have the potential to regenerate as opposed to repair tissue are gaining ground. These include customizable nanofiber matrices incorporating novel materials; a variety of autologous and allogeneic cell types at various stages of differentiation (e.g., pluripotent, terminally differentiated); peptides; proteins; small molecules; RNA inhibitors; and gene therapies. Critical Issues: Wound healing is a logical target for regenerative medicine due to the accessibility and structure of skin, the regenerative nature of healing, the lack of good limb salvage treatments, and the current use of cell therapies. However, more extensive knowledge of pathophysiologic targets is needed to inform regenerative strategies, and new technologies must demonstrate value in terms of outcomes and related health economic measures to achieve successful market access and penetration. Future Directions: Due to similarities in cell pathways and developmental mechanisms, regenerative technologies developed in one therapeutic area may be applicable to others. Approaches that proceed from human genomic or other big data sources to models are becoming increasingly common and will likely suggest novel therapeutic avenues. To fully capitalize on the advances in regenerative medicine, studies must demonstrate the value of new therapies in identified patient populations, and sponsors must work with regulatory agencies to develop appropriate dossiers supporting timely approval.
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Qiu M, Chen D, Shen C, Shen J, Zhao H, He Y. Platelet-Rich Plasma-Loaded Poly(d,l-lactide)-Poly(ethylene glycol)-Poly(d,l-lactide) Hydrogel Dressing Promotes Full-Thickness Skin Wound Healing in a Rodent Model. Int J Mol Sci 2016; 17:ijms17071001. [PMID: 27347938 PMCID: PMC4964377 DOI: 10.3390/ijms17071001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/16/2016] [Accepted: 06/20/2016] [Indexed: 02/05/2023] Open
Abstract
Traditional therapeutic methods for skin wounds have many disadvantages, and new wound dressings that can facilitate the healing process are thus urgently needed. Platelet-rich plasma (PRP) contains multiple growth factors (GFs) and shows a significant capacity to heal soft tissue wounds. However, these GFs have a short half-life and deactivate rapidly; we therefore need a sustained delivery system to overcome this shortcoming. In this study, poly(d,l-lactide)-poly(ethylene glycol)-poly(d,l-lactide) (PDLLA-PEG-PDLLA: PLEL) hydrogel was successfully created as delivery vehicle for PRP GFs and was evaluated systematically. PLEL hydrogel was injectable at room temperature and exhibited a smart thermosensitive in situ gel-formation behavior at body temperature. In vitro cell culture showed PRP-loaded PLEL hydrogel (PRP/PLEL) had little cytotoxicity, and promoted EaHy926 proliferation, migration and tube formation; the factor release assay additionally indicated that PLEL realized the controlled release of PRP GFs for as long as 14 days. When employed to treat rodents’ full-thickness skin defects, PRP/PLEL showed a significantly better ability to raise the number of both newly formed and mature blood vessels compared to the control, PLEL and PRP groups. Furthermore, the PRP/PLEL-treated group displayed faster wound closure, better reepithelialization and collagen formation. Taken together, PRP/PLEL provides a promising strategy for promoting angiogenesis and skin wound healing, which extends the potential of this dressing for clinical application.
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Affiliation(s)
- Manle Qiu
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China.
| | - Daoyun Chen
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China.
| | - Chaoyong Shen
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Ji Shen
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China.
| | - Huakun Zhao
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China.
| | - Yaohua He
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China.
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Bhowmick S, Scharnweber D, Koul V. Co-cultivation of keratinocyte-human mesenchymal stem cell (hMSC) on sericin loaded electrospun nanofibrous composite scaffold (cationic gelatin/hyaluronan/chondroitin sulfate) stimulates epithelial differentiation in hMSCs: In vitro study. Biomaterials 2016; 88:83-96. [PMID: 26946262 DOI: 10.1016/j.biomaterials.2016.02.034] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 12/21/2022]
Abstract
Fortifying the scaffold with bioactive molecules and glycosaminoglycans (GAGs), is an efficient way to design new generation tissue engineered biomaterials. In this study, we evaluated the synergistic effect of electrospun nanofibrous composite scaffold (cationic gelatin/hyaluronan/chondroitin sulfate) loaded with sericin and, contact co-culture of human mesenchymal stem cells (hMSCs)-keratinocytes on hMSCs' differentiation towards epithelial lineage. Cationic gelatin is prepared with one step novel synthesis process by grafting quaternary ammonium salts to the backbone of gelatin. Release kinetics studies showed that Fickian diffusion is the major release mechanism for both GAGs and sericin/gelatin. In vitro biocompatibility of the electrospun scaffold was evaluated in terms of LDH and DNA quantification assay on human foreskin fibroblast, human keratinocyte and hMSC. Significant proliferation (∼ 4-6 fold) was detected after culturing all three cell on the electrospun scaffold containing sericin. After 5 days of contact co-culture, results revealed that electrospun scaffold containing sericin promote epithelial differentiation of hMSC in terms of several protein markers (keratin 14, ΔNp63α and Pan-cytokeratin) and gene expression of some dermal proteins (keratin 14, ΔNp63α). Findings of this study will foster the progress of current skin tissue engineering scaffolds by understanding the skin regeneration and wound healing process.
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Affiliation(s)
- Sirsendu Bhowmick
- Max Bergmann Center of Biomaterials, Technische Universität Dresden, Budapester Straße 27, 01069 Dresden, Germany; Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India
| | - Dieter Scharnweber
- Max Bergmann Center of Biomaterials, Technische Universität Dresden, Budapester Straße 27, 01069 Dresden, Germany
| | - Veena Koul
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India.
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Liang D, Lu Z, Yang H, Gao J, Chen R. Novel Asymmetric Wettable AgNPs/Chitosan Wound Dressing: In Vitro and In Vivo Evaluation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:3958-3968. [PMID: 26800283 DOI: 10.1021/acsami.5b11160] [Citation(s) in RCA: 256] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel silver nanoparticles (AgNPs)/chitosan composite dressing with asymmetric wettability surfaces was successfully prepared via a simple two-step method for biomedical applications as wound healing materials. First, AgNPs were assembled into the chitosan sponge which was prepared by lyophilization process. Then one side of the sponge was modified by a thin layer of stearic acid. The incorporation of AgNPs into chitosan dressing could enhance the antibacterial activity against drug-sensitive and drug-resistant pathogenic bacteria. The asymmetric surface modification endows the dressing with both highly hydrophobic property and inherent hydrophilic nature of chitosan. The hydrophobic surface of the dressing shows waterproof and antiadhesion for contaminant properties, whereas the hydrophilic surface preserves its water-absorbing capability and efficiently inhibits the growth of bacteria. Furthermore, the AgNPs/chitosan composite dressing displays improved moisture retention and blood clotting ability compared to the unmodified dressings. Cytocompatibility test evaluated in vitro and in a wound infection model illustrates the nontoxic nature of the composite dressing. More importantly, the in vivo wound healing model evaluation in mice reveals that the asymmetric AgNPs/chitosan dressing promotes the wound healing and accelerates the reepithelialization and collagen deposition. The silver accumulation in mice body treated by the composite dressing is far lower than that of the clinically used Acasin nanosilver dressing treated mice. This work indicates the huge potential of the novel AgNPs/chitosan wound dressing with asymmetrical wettability for clinical use.
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Affiliation(s)
- Donghui Liang
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology , Xiongchu Avenue, Wuhan 430073, PR China
| | - Zhong Lu
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology , Xiongchu Avenue, Wuhan 430073, PR China
| | - Hao Yang
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology , Xiongchu Avenue, Wuhan 430073, PR China
| | - Jingting Gao
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology , Xiongchu Avenue, Wuhan 430073, PR China
| | - Rong Chen
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology , Xiongchu Avenue, Wuhan 430073, PR China
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Ahmadi-Aghkand F, Gholizadeh-Ghaleh Aziz S, Panahi Y, Daraee H, Gorjikhah F, Gholizadeh-Ghaleh Aziz S, Hsanzadeh A, Akbarzadeh A. Recent prospective of nanofiber scaffolds fabrication approaches for skin regeneration. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1635-41. [DOI: 10.3109/21691401.2015.1111232] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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69
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Morgado PI, Aguiar-Ricardo A, Correia IJ. Asymmetric membranes as ideal wound dressings: An overview on production methods, structure, properties and performance relationship. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.04.064] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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70
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Sun Q, Li F, Li H, Chen RH, Gu YZ, Chen Y, Liang HS, You XR, Ding SS, Gao L, Wang YL, Qin MD, Zhang XG. Amniotic fluid stem cells provide considerable advantages in epidermal regeneration: B7H4 creates a moderate inflammation microenvironment to promote wound repair. Sci Rep 2015; 5:11560. [PMID: 26101181 PMCID: PMC4477371 DOI: 10.1038/srep11560] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 05/18/2015] [Indexed: 11/09/2022] Open
Abstract
The current treatments for severe skin injury all involve skin grafting. However, there is a worldwide shortage of donor skin tissue. In this study, we examined the advantages of using human amniotic fluid stem (hAFS) cells in skin wound healing. In vitro, hAFS cells differentiate into keratinocytes (termed hAFS-K). Like keratinocytes, hAFS-K cells express the markers K5, K14, K10 and involucrin; display typical cellular structure, including a tonofibril-rich cytoplasm; and construct a completely pluristratified epithelium in 3D culture. In vivo, in a mouse excisional wound model, GFP-positive hAFS cells participate in wound repair. Co-localization of GFP/K14 and GFP/K10 in the repaired epidermis demonstrated that hAFS cells can differentiate into keratinocytes. Real-time PCR results confirmed that hAFS cells can initiate and promote early-stage repair of skin damage. During wound repair, hAFS cells did not directly secrete repair-related factors, such as bFGF, VEGF, CXCL12, TGF-β1 and KGF, and provided a moderate inflammation reaction with lower expression of IL-1β, IL-6, TNF-α, Cox2 and Mac3. In hAFS cells, the negative co-stimulatory molecule B7H4 regulates low immunogenicity, which can provide a modest inflammatory reaction microenvironment for wound repair. Furthermore, with their uniquely high proliferation rate, hAFS cells offer a promising alternative for epidermal regeneration.
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Affiliation(s)
- Qing Sun
- 1] The Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, Jiangsu Province, P.R. China [2] Department of Immunology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Fang Li
- 1] The Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, Jiangsu Province, P.R. China [2] Department of Human Anatomy, Histology and Embryology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Hong Li
- Center for Reproduction and Genetics, Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, Jiangsu Province,P.R. China
| | - Rui-Hua Chen
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Yan-Zheng Gu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Ying Chen
- Center for Reproduction and Genetics, Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, Jiangsu Province,P.R. China
| | - Han-Si Liang
- 1] The Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, Jiangsu Province, P.R. China [2] Department of Immunology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Xin-Ran You
- 1] The Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, Jiangsu Province, P.R. China [2] Department of Immunology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Si-Si Ding
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Ling Gao
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Yun-Liang Wang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Ming-De Qin
- 1] The Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, Jiangsu Province, P.R. China [2] Department of Immunology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, Jiangsu Province, P.R. China
| | - Xue-Guang Zhang
- 1] The Stem Cell and Biomedical Material Key Laboratory of Jiangsu Province (the State Key Laboratory Incubation Base), Soochow University, Suzhou, Jiangsu Province, P.R. China [2] Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, P.R. China
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71
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Ninan N, Muthiah M, Park IK, Wong TW, Thomas S, Grohens Y. Natural Polymer/Inorganic Material Based Hybrid Scaffolds for Skin Wound Healing. POLYM REV 2015. [DOI: 10.1080/15583724.2015.1019135] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Park IS, Chung PS, Ahn JC. Enhancement of Ischemic Wound Healing by Spheroid Grafting of Human Adipose-Derived Stem Cells Treated with Low-Level Light Irradiation. PLoS One 2015; 10:e0122776. [PMID: 26065900 PMCID: PMC4465903 DOI: 10.1371/journal.pone.0122776] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 02/12/2015] [Indexed: 12/31/2022] Open
Abstract
We investigated whether low-level light irradiation prior to transplantation of adipose-derived stromal cell (ASC) spheroids in an animal skin wound model stimulated angiogenesis and tissue regeneration to improve functional recovery of skin tissue. The spheroid, composed of hASCs, was irradiated with low-level light and expressed angiogenic factors, including vascular endothelial growth factor (VEGF), basic fibroblast growth factor (FGF), and hepatocyte growth factor (HGF). Immunochemical staining analysis revealed that the spheroid of the hASCs was CD31+, KDR+, and CD34+. On the other hand, monolayer-cultured hASCs were negative for these markers. PBS, human adipose tissue-derived stromal cells, and the ASC spheroid were transplanted into a wound bed in athymic mice to evaluate the therapeutic effects of the ASC spheroid in vivo. The ASC spheroid transplanted into the wound bed differentiated into endothelial cells and remained differentiated. The density of vascular formations increased as a result of the angiogenic factors released by the wound bed and enhanced tissue regeneration at the lesion site. These results indicate that the transplantation of the ASC spheroid significantly improved functional recovery relative to both ASC transplantation and PBS treatment. These findings suggest that transplantation of an ASC spheroid treated with low-level light may be an effective form of stem cell therapy for treatment of a wound bed.
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Affiliation(s)
- In-Su Park
- Beckman Laser Institute Korea, Dankook University, 119 Dandae-ro, Cheonan, Chungnam, 330–714, Korea
| | - Phil-Sang Chung
- Beckman Laser Institute Korea, Dankook University, 119 Dandae-ro, Cheonan, Chungnam, 330–714, Korea
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Dankook University, 119 Dandae-ro, Cheonan, Chungnam, 330–714, Korea
| | - Jin Chul Ahn
- Beckman Laser Institute Korea, Dankook University, 119 Dandae-ro, Cheonan, Chungnam, 330–714, Korea
- Department of Biomedical Science, Dankook University, Cheonan, Chungnam, 330–714, Korea
- Biomedical Translational Research Institute, Dankook University, Cheonan, Chungnam, 330–714, Korea
- * E-mail:
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Pilehvar-Soltanahmadi Y, Akbarzadeh A, Moazzez-Lalaklo N, Zarghami N. An update on clinical applications of electrospun nanofibers for skin bioengineering. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1350-64. [PMID: 25939744 DOI: 10.3109/21691401.2015.1036999] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Mimicking morphological similarities of the natural extra cellular matrix (ECM), described by ultrafine continuous fibers, high surface to volume ratio, and high porosity is valuable for effective regeneration of injured skin tissue. Electrospun nanofibers, being one of the most favorable and fast developing products of technology today, display a tremendous potential in wound healing and skin tissue engineering. Under the remarkable attention being given to electrospun nanofibrous scaffolds in promoting wound healing and skin regeneration, this review focuses on the potential of the electrospinning technique as a promising tool for constructing polymeric nanofibrous scaffolds with the favorable physicochemical properties needed for skin bioengineering. In addition, current applications of electrospun nanofibrous matrices for skin bioengineering are detailed in this review.
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Affiliation(s)
- Yones Pilehvar-Soltanahmadi
- a Stem Cell Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,b Hematology and Oncology Research Center, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Abolfazl Akbarzadeh
- a Stem Cell Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,d Department of Medical Biotechnology , and Medical Nanotechnology, School of Advanced Medical Sciences, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Nasim Moazzez-Lalaklo
- d Department of Medical Biotechnology , and Medical Nanotechnology, School of Advanced Medical Sciences, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Nosratollah Zarghami
- a Stem Cell Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,b Hematology and Oncology Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,c Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences , Tabriz , Iran
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74
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Zhao S, Li L, Wang H, Zhang Y, Cheng X, Zhou N, Rahaman MN, Liu Z, Huang W, Zhang C. Wound dressings composed of copper-doped borate bioactive glass microfibers stimulate angiogenesis and heal full-thickness skin defects in a rodent model. Biomaterials 2015; 53:379-91. [PMID: 25890736 DOI: 10.1016/j.biomaterials.2015.02.112] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 02/24/2015] [Accepted: 02/27/2015] [Indexed: 01/01/2023]
Abstract
There is a need for better wound dressings that possess the requisite angiogenic capacity for rapid in situ healing of full-thickness skin wounds. Borate bioactive glass microfibers are showing a remarkable ability to heal soft tissue wounds but little is known about the process and mechanisms of healing. In the present study, wound dressings composed of borate bioactive glass microfibers (diameter = 0.4-1.2 μm; composition 6Na2O, 8K2O, 8MgO, 22CaO, 54B2O3, 2P2O5; mol%) doped with 0-3.0 wt.% CuO were created and evaluated in vitro and in vivo. When immersed in simulated body fluid, the fibers degraded and converted to hydroxyapatite within ∼7 days, releasing ions such as Ca, B and Cu into the medium. In vitro cell culture showed that the ionic dissolution product of the fibers was not toxic to human umbilical vein endothelial cells (HUVECs) and fibroblasts, promoted HUVEC migration, tubule formation and secretion of vascular endothelial growth factor (VEGF), and stimulated the expression of angiogenic-related genes of the fibroblasts. When used to treat full-thickness skin defects in rodents, the Cu-doped fibers (3.0 wt.% CuO) showed a significantly better capacity to stimulate angiogenesis than the undoped fibers and the untreated defects (control) at 7 and 14 days post-surgery. The defects treated with the Cu-doped and undoped fibers showed improved collagen deposition, maturity and orientation when compared to the untreated defects, the improvement shown by the Cu-doped fibers was not markedly better than the undoped fibers at 14 days post-surgery. These results indicate that the Cu-doped borate glass microfibers have a promising capacity to stimulate angiogenesis and heal full-thickness skin defects. They also provide valuable data for understanding the role of the microfibers in healing soft tissue wounds.
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Affiliation(s)
- Shichang Zhao
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, People's Republic of China
| | - Le Li
- School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Hui Wang
- School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Yadong Zhang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, People's Republic of China
| | - Xiangguo Cheng
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, People's Republic of China
| | - Nai Zhou
- School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409-0340, USA.
| | - Zhongtang Liu
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Wenhai Huang
- School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Changqing Zhang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, People's Republic of China.
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Abstract
This work presents the synthesis and characterization of natural-synthetic hydrogels based on gelatin (Gel) and polyvinylpyrrolidone (PVP), with potential for skin grafts applications. The natural component, Gel insures the biocompatibility and biodegradability of the bicomponent system [1], while the synthetic counterpart, PVP, is a physiologic inert component, extensively used in medicine due to its water affinity and due to its capacity of confer elasticity to films and membranes with potential applications in skin grafts [2]. The obtained hydrogels were subjected to morpho-structural analysis and rheological and mechanical tests (traction). The water affinity of the systems was estimated and their capacity to generate porous substrates through freeze-drying was evaluated.
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76
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Bhardwaj N, Sow WT, Devi D, Ng KW, Mandal BB, Cho NJ. Silk fibroin–keratin based 3D scaffolds as a dermal substitute for skin tissue engineering. Integr Biol (Camb) 2015; 7:53-63. [DOI: 10.1039/c4ib00208c] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Development of highly vascular dermal tissue-engineered skin substitutes with appropriate mechanical properties and cellular cues is in need for significant advancement in the field of dermal reconstruction.
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Affiliation(s)
- Nandana Bhardwaj
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
- Centre for Biomimetic Sensor Science
- Nanyang Technological University
| | - Wan Ting Sow
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
| | - Dipali Devi
- Seri-Biotechnology Unit
- Life Science Division
- Institute of Advanced Study in Science and Technology
- Guwahati-781035
- India
| | - Kee Woei Ng
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
| | - Biman B. Mandal
- Department of Biotechnology
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Nam-Joon Cho
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore-639798
- Centre for Biomimetic Sensor Science
- Nanyang Technological University
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77
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High-resolution episcopic microscopy (HREM): A useful technique for research in wound care. Ann Anat 2015; 197:3-10. [DOI: 10.1016/j.aanat.2014.10.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 09/24/2014] [Accepted: 10/13/2014] [Indexed: 12/15/2022]
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78
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Abdali Z, Yeganeh H, Solouk A, Gharibi R, Sorayya M. Thermoresponsive antimicrobial wound dressings via simultaneous thiol-ene polymerization and in situ generation of silver nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra11618j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermoresponsive and antimicrobial wound dressing via thiol-ene polymerization reaction.
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Affiliation(s)
- Zahra Abdali
- Biomedical Engineering Faculty
- Amirkabir University of Technology
- Tehran
- Iran
| | | | - Atefeh Solouk
- Biomedical Engineering Faculty
- Amirkabir University of Technology
- Tehran
- Iran
| | - Reza Gharibi
- Iran Polymer and Petrochemical Institute
- Tehran
- Iran
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79
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Chang Q, Gao H, Bu S, Zhong W, Lu F, Xing M. An injectable aldehyded 1-amino-3,3-diethoxy-propane hyaluronic acid–chitosan hydrogel as a carrier of adipose derived stem cells to enhance angiogenesis and promote skin regeneration. J Mater Chem B 2015; 3:4503-4513. [DOI: 10.1039/c5tb00027k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report an injectable aldehyded 1-amino-3,3-diethoxy-propane (ADEP)–hyaluronic acid (AHA)–chitosan (CS) hydrogel.
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Affiliation(s)
- Qiang Chang
- Department of Mechanical and Manufacturing Engineering
- University of Manitoba
- Winnipeg
- Canada
- Department of Biochemistry and Medical Genetics
| | - Haiyun Gao
- Department of Mechanical and Manufacturing Engineering
- University of Manitoba
- Winnipeg
- Canada
- Manitoba Institute of Child Health
| | - Shouhan Bu
- Department of Mechanical and Manufacturing Engineering
- University of Manitoba
- Winnipeg
- Canada
- Manitoba Institute of Child Health
| | - Wen Zhong
- Department of Textile Sciences
- Faculty of Human Ecology
- University of Manitoba
- Winnipeg
- Canada
| | - Feng Lu
- Department of Plastic and Cosmetic Surgery
- Nanfang Hospital
- Southern Medical University
- 1838 Guangzhou
- P. R. China
| | - Malcolm Xing
- Department of Mechanical and Manufacturing Engineering
- University of Manitoba
- Winnipeg
- Canada
- Department of Biochemistry and Medical Genetics
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80
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Evaluation of Microcrystalline Chitosan and Fibrin Membranes as Platelet-Derived Growth Factor-BB Carriers with Amoxicillin. INT J POLYM SCI 2015. [DOI: 10.1155/2015/386251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to describe the mechanical and sorption features of homogeneous and composite membranes which consist of microcrystalline chitosan (MCCh) and fibrin (Fb) in various proportions as well as thein vitrokinetics of platelet-derived growth factor-BB (PDGF-BB) released from ten types of membranes in the presence or absence of amoxicillin (Am). The films were characterized by Fourier transform infrared (FTIR) spectroscopy, mechanical tests: breaking strength (Bs) and elongation at break (Eb), as well as SEM images, and swelling study. The influence of the form of samples (dry or wet) on Young’s modulus (E) was also examined. The homogeneous MCCh (M1) and composite M3 and M4 (MCCh : Fb = 2 : 1 and 1 : 1) membranes were characterized by good sorption properties and higher mechanical strength, when compared with Fb (M2) membrane. Connecting MCCh with Fb decreases release of PDGF-BB and increases release of Am. The most efficient release of PDGF-BB was observed in the case of M4 (the optimum MCCh : Fb ratio was 1 : 1) membrane. It was found that the degree of PDGF-BB release from the membrane is influenced by the physicochemical and mechanical characteristics of the films and by its affinity to growth factor PDGF-BB.
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81
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Collagen–poly(dialdehyde) guar gum based porous 3D scaffolds immobilized with growth factor for tissue engineering applications. Carbohydr Polym 2014; 114:399-406. [DOI: 10.1016/j.carbpol.2014.08.045] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/08/2014] [Accepted: 08/11/2014] [Indexed: 11/24/2022]
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82
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Cerqueira MT, da Silva LP, Santos TC, Pirraco RP, Correlo VM, Reis RL, Marques AP. Gellan gum-hyaluronic acid spongy-like hydrogels and cells from adipose tissue synergize promoting neoskin vascularization. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19668-19679. [PMID: 25361388 DOI: 10.1021/am504520j] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Currently available substitutes for skin wound healing often result in the formation of nonfunctional neotissue. Thus, urgent care is still needed to promote an effective and complete regeneration. To meet this need, we proposed the assembling of a construct that takes advantage of cell-adhesive gellan gum-hyaluronic acid (GG-HA) spongy-like hydrogels and a powerful cell-machinery obtained from adipose tissue, human adipose stem cells (hASCs), and microvascular endothelial cells (hAMECs). In addition to a cell-adhesive character, GG-HA spongy-like hydrogels overpass limitations of traditional hydrogels, such as reduced physical stability and limited manipulation, due to improved microstructural arrangement characterized by pore wall thickening and increased mean pore size. The proposed constructs combining cellular mediators of the healing process within the spongy-like hydrogels that intend to recapitulate skin matrix aim to promote neoskin vascularization. Stable and off-the-shelf dried GG-HA polymeric networks, rapidly rehydrated at the time of cell seeding then depicting features of both sponges and hydrogels, enabled the natural cell entrapment/encapsulation and attachment supported by cell-polymer interactions. Upon transplantation into mice full-thickness excisional wounds, GG-HA spongy-like hydrogels absorbed the early inflammatory cell infiltrate and led to the formation of a dense granulation tissue. Consequently, spongy-like hydrogel degradation was observed, and progressive wound closure, re-epithelialization, and matrix remodelling was improved in relation to the control condition. More importantly, GG-HA spongy-like hydrogels promoted a superior neovascularization, which was enhanced in the presence of human hAMECs, also found in the formed neovessels. These observations highlight the successful integration of a valuable matrix and prevascularization cues to target angiogenesis/neovascularization in skin full-thickness excisional wounds.
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Affiliation(s)
- Mariana Teixeira Cerqueira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark4806-909, Taipas, Guimarães, Portugal
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83
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Nair RP, Joseph J, Harikrishnan VS, Krishnan VK, Krishnan L. Contribution of fibroblasts to the mechanical stability of in vitro engineered dermal-like tissue through extracellular matrix deposition. Biores Open Access 2014; 3:217-25. [PMID: 25371858 PMCID: PMC4215331 DOI: 10.1089/biores.2014.0023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Tissue-engineered skin with mechanical and biological properties that match the native tissue could be a valuable graft to treat non-healing chronic wounds. Fibroblasts grown on a suitable biodegradable scaffold are a feasible strategy for the development of a dermal substitute above which epithelialization may occur naturally. Cell growth and phenotype maintenance are crucial to ensure the functional status of engineered tissue. In this study, an electrospun biodegradable polymer scaffold composed of a terpolymer PLGC [poly(lactide-glycolide-caprolactone)] with appropriate mechanical strength was used as a scaffold so that undesirable contraction of the wound could be prevented when it was implanted. To enhance cell growth, synthetic PLGC was incorporated with a fibrin-based biomimetic composite. The efficacy of the hybrid scaffold was evaluated by comparing it with bare PLGC in terms of fibroblast growth potential, extracellular matrix (ECM) deposition, polymer degradation, and mechanical strength. A significant increase was observed in fibroblast attachment, proliferation, and deposition of ECM proteins such as collagen and elastin in the hybrid scaffold. After growing fibroblasts for 20 d and 40 d, immunochemical staining of the decellularized scaffolds showed deposition of insoluble collagen and elastin on the hybrid scaffold but not on the bare scaffold. The loss of mechanical strength consequent to in vitro polymer degradation seemed to be balanced owing to the ECM deposition. Thus, tensile strength and elongation were better when cells were grown on the hybrid scaffold rather than the bare samples immersed in culture medium. Similar patterns of in vivo and in vitro degradation were observed during subcutaneous implantation and fibroblast culture, respectively. We therefore postulate that a hybrid scaffold comprising PLGC and fibrin is a potential candidate for the engineering of dermal tissue to be used in the regeneration of chronic wounds.
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Affiliation(s)
- Renjith P Nair
- Thrombosis Research Unit, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology , Trivandrum, India
| | - Jasmin Joseph
- Dental Products Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology , Trivandrum, India
| | - V S Harikrishnan
- Division of Laboratory Animal Science, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology , Trivandrum, India
| | - V K Krishnan
- Dental Products Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology , Trivandrum, India
| | - Lissy Krishnan
- Thrombosis Research Unit, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology , Trivandrum, India
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84
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Miguel SP, Ribeiro MP, Brancal H, Coutinho P, Correia IJ. Thermoresponsive chitosan–agarose hydrogel for skin regeneration. Carbohydr Polym 2014; 111:366-73. [DOI: 10.1016/j.carbpol.2014.04.093] [Citation(s) in RCA: 165] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 04/24/2014] [Accepted: 04/27/2014] [Indexed: 12/17/2022]
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85
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Häkkinen L, Larjava H, Fournier BPJ. Distinct phenotype and therapeutic potential of gingival fibroblasts. Cytotherapy 2014; 16:1171-86. [PMID: 24934304 DOI: 10.1016/j.jcyt.2014.04.004] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 03/13/2014] [Accepted: 04/04/2014] [Indexed: 01/15/2023]
Abstract
Gingiva of the oral mucosa provides a practical source to isolate fibroblasts for therapeutic purposes because the tissue is easily accessible, tissue discards are common during routine clinical procedures and wound healing after biopsy is fast and results in complete wound regeneration with very little morbidity or scarring. In addition, gingival fibroblasts have unique traits, including neural crest origin, distinct gene expression and synthetic properties and potent immunomodulatory functions. These characteristics may provide advantages for certain therapeutic approaches over other more commonly used cells, including skin fibroblasts, both in intraoral and extra-oral sites. However, identity and phenotype of gingival fibroblasts, like other fibroblasts, are still not completely understood. Gingival fibroblasts are phenotypically heterogeneous, and these…fibroblast subpopulations may play different roles in tissue maintenance, regeneration and pathologies. The purpose of this review is to summarize what is currently known about gingival fibroblasts, their distinct potential for tissue regeneration and their potential therapeutic uses in the future.
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Affiliation(s)
- Lari Häkkinen
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
| | - Hannu Larjava
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Benjamin P J Fournier
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada; Paris Diderot University, Dental School, Rotschild Hospital, AP-HP, Paris, France; UMRS872, Team 5, Molecular Oral Physiopathology, CRC Les Cordeliers, Paris, 75006, INSERM UMRS872, Pierre et Marie Curie University, Paris Descartes University, Paris, France
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86
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Abstract
Currently, the gold standard for reconstruction after rhinectomy or severe trauma to the nose, includes transposition of autologous mucosal flaps plus autologous cartilage grating and coverage using a skin flap. Difficulties with this approach arise where; cartilage and mucosa harvested from autologous donor sites is insufficient to achieve a passable aesthetic and functional reconstruction. Skin flaps are often bulky, poor color matches with hair follicles that reduce the aesthetic quality of the reconstruction. We suggest that tissue engineering could be a source of functional replacement tissues for nasal reconstructive surgery. However, the advancement of such an approach is dependent on the dissemination of scientific information into the clinical community, regarding the engineering of tissues such as mucosa, skin, and cartilage. This paper therefore reviews how the tissue engineering strategies available for producing clinically viable tissues could help resolve issues around reconstructing the human nose.
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87
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In Vivo Evaluation of Wound Bed Reaction and Graft Performance After Cold Skin Graft Storage. J Burn Care Res 2014; 35:e187-96. [DOI: 10.1097/bcr.0b013e3182a226df] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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88
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Payne KF, Balasundaram I, Deb S, Di Silvio L, Fan KF. Tissue engineering technology and its possible applications in oral and maxillofacial surgery. Br J Oral Maxillofac Surg 2014; 52:7-15. [DOI: 10.1016/j.bjoms.2013.03.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 03/09/2013] [Indexed: 12/27/2022]
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89
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Huang X, Zhang Y, Zhang X, Xu L, Chen X, Wei S. Influence of radiation crosslinked carboxymethyl-chitosan/gelatin hydrogel on cutaneous wound healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4816-24. [DOI: 10.1016/j.msec.2013.07.044] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 05/08/2013] [Accepted: 07/30/2013] [Indexed: 11/30/2022]
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90
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Improving the cellular invasion into PHEMA sponges by incorporation of the RGD peptide ligand: The use of copolymerization as a means to functionalize PHEMA sponges. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4917-22. [DOI: 10.1016/j.msec.2013.08.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 07/22/2013] [Accepted: 08/09/2013] [Indexed: 12/16/2022]
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91
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Fournier BPJ, Larjava H, Häkkinen L. Gingiva as a source of stem cells with therapeutic potential. Stem Cells Dev 2013; 22:3157-77. [PMID: 23944935 DOI: 10.1089/scd.2013.0015] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Postnatal connective tissues contain phenotypically heterogeneous cells populations that include distinct fibroblast subpopulations, pericytes, myofibroblasts, fibrocytes, and tissue-specific mesenchymal stem cells (MSCs). These cells play key roles in tissue development, maintenance, and repair and contribute to various pathologies. Depending on the origin of tissue, connective tissue cells, including MSCs, have different phenotypes. Understanding the identity and specific functions of these distinct tissue-specific cell populations may allow researchers to develop better treatment modalities for tissue regeneration and find novel approaches to prevent pathological conditions. Interestingly, MSCs from adult oral mucosal gingiva possess distinct characteristics, including neural crest origin, multipotent differentiation capacity, fetal-like phenotype, and potent immunomodulatory properties. These characteristics and an easy, relatively noninvasive access to gingival tissue, and fast tissue regeneration after tissue biopsy make gingiva an attractive target for cell isolation for therapeutic purposes aiming to promote tissue regeneration and fast, scar-free wound healing. The purpose of this review is to discuss the identity, phenotypical heterogeneity, and function of gingival MSCs and summarize what is currently known about their properties, role in scar-free healing, and their future therapeutic potential.
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Affiliation(s)
- Benjamin P J Fournier
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia , Vancouver, Canada
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92
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Wong VW, Gurtner GC, Longaker MT. Wound healing: a paradigm for regeneration. Mayo Clin Proc 2013; 88:1022-31. [PMID: 24001495 DOI: 10.1016/j.mayocp.2013.04.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 04/12/2013] [Indexed: 02/07/2023]
Abstract
Human skin is a remarkably plastic organ that sustains insult and injury throughout life. Its ability to expeditiously repair wounds is paramount to survival and is thought to be regulated by wound components such as differentiated cells, stem cells, cytokine networks, extracellular matrix, and mechanical forces. These intrinsic regenerative pathways are integrated across different skin compartments and are being elucidated on the cellular and molecular levels. Recent advances in bioengineering and nanotechnology have allowed researchers to manipulate these microenvironments in increasingly precise spatial and temporal scales, recapitulating key homeostatic cues that may drive regeneration. The ultimate goal is to translate these bench achievements into viable bedside therapies that address the growing global burden of acute and chronic wounds. In this review, we highlight current concepts in cutaneous wound repair and propose that many of these evolving paradigms may underlie regenerative processes across diverse organ systems.
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Affiliation(s)
- Victor W Wong
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University, Stanford, CA, USA
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93
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Alizadeh M, Abbasi F, Khoshfetrat AB, Ghaleh H. Microstructure and characteristic properties of gelatin/chitosan scaffold prepared by a combined freeze-drying/leaching method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3958-67. [PMID: 23910302 DOI: 10.1016/j.msec.2013.05.039] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 05/04/2013] [Accepted: 05/16/2013] [Indexed: 11/25/2022]
Abstract
A combined freeze-drying and particulate leaching method for scaffold synthesis showed an improvement in the horizontal microstructure of the gelatin/chitosan scaffolds. Type and concentration of the cross-linking agent, freezing temperature, concentration of the polymeric solution and gelatin/chitosan weight ratio were the variables affecting the scaffold properties. Assessment of the tensile properties of the scaffolds revealed that for a scaffold with 50% chitosan, glutaraldehyde, as a cross-linking agent, created much tighter polymeric network compared to N,N-(3-dimethylaminopropyl)-N'-ethyl carbodiimide (EDC). However, in the case of gelatin scaffolds, EDC was identified as the stronger cross-linker. Compressive behavior of the scaffolds satisfied formulations obtained from the theoretical modeling of the low-density, elastomeric foams. The investigation of the scaffold degradation indicated that the increase in the mechanical strength of the scaffolds would not always reduce their degradation rate.
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Affiliation(s)
- M Alizadeh
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
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94
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Pereira RF, Barrias CC, Granja PL, Bartolo PJ. Advanced biofabrication strategies for skin regeneration and repair. Nanomedicine (Lond) 2013; 8:603-21. [DOI: 10.2217/nnm.13.50] [Citation(s) in RCA: 207] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Skin is the largest organ of human body, acting as a barrier with protective, immunologic and sensorial functions. Its permanent exposure to the external environment can result in different kinds of damage with loss of variable volumes of extracellular matrix. For the treatment of skin lesions, several strategies are currently available, such as the application of autografts, allografts, wound dressings and tissue-engineered substitutes. Although proven clinically effective, these strategies are still characterized by key limitations such as patient morbidity, inadequate vascularization, low adherence to the wound bed, the inability to reproduce skin appendages and high manufacturing costs. Advanced strategies based on both bottom-up and top-down approaches offer an effective, permanent and viable alternative to solve the abovementioned drawbacks by combining biomaterials, cells, growth factors and advanced biomanufacturing techniques. This review details recent advances in skin regeneration and repair strategies, and describes their major advantages and limitations. Future prospects for skin regeneration are also outlined.
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Affiliation(s)
- Rúben F Pereira
- Centre for Rapid & Sustainable Product Development, Polytechnic Institute of Leiria, Portugal
- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Cristina C Barrias
- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Pedro L Granja
- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Metalúrgica & Materiais, Porto, Portugal
| | - Paulo J Bartolo
- Centre for Rapid & Sustainable Product Development, Polytechnic Institute of Leiria, Portugal.
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95
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Xu S, Sang L, Zhang Y, Wang X, Li X. Biological evaluation of human hair keratin scaffolds for skin wound repair and regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:648-55. [DOI: 10.1016/j.msec.2012.10.011] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 09/30/2012] [Accepted: 10/26/2012] [Indexed: 10/27/2022]
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96
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Natesan S, Zamora DO, Wrice NL, Baer DG, Christy RJ. Bilayer Hydrogel With Autologous Stem Cells Derived From Debrided Human Burn Skin for Improved Skin Regeneration. J Burn Care Res 2013; 34:18-30. [DOI: 10.1097/bcr.0b013e3182642c0e] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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97
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Kidwai FK, Liu H, Toh WS, Fu X, Jokhun DS, Movahednia MM, Li M, Zou Y, Squier CA, Phan TT, Cao T. Differentiation of human embryonic stem cells into clinically amenable keratinocytes in an autogenic environment. J Invest Dermatol 2012; 133:618-628. [PMID: 23235526 DOI: 10.1038/jid.2012.384] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Human embryonic stem cells (hESCs)-derived keratinocytes hold great clinical and research potential. However, the current techniques are hampered by the use of xenogenic components that limits their clinical application. Here we demonstrated an efficient differentiation of H9 hESCs (H9-hESCs) into keratinocytes (H9-Kert) with the minimum use of animal-derived materials. For differentiation, we established two microenvironment systems originated from H9-hESCs (autogenic microenvironment). These autogenic microenvironment systems consist of an autogenic coculture system (ACC) and an autogenic feeder-free system (AFF). In addition, we showed a stage-specific effect of Activin in promoting keratinocyte differentiation from H9-hESCs while repressing the expression of early neural markers in the ACC system. Furthermore, we also explained the effect of Activin in construction of the AFF system made up of extracellular matrix similar to basement membrane extracted from H9-hESC-derived fibroblasts. H9-Kert differentiated in both systems expressed keratinocyte markers at mRNA and protein levels. H9-Kert were also able to undergo terminal differentiation in high Ca(2+) medium. These findings support the transition toward the establishment of an animal-free microenvironment for successful differentiation of hESCs into keratinocytes for potential clinical application.
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Affiliation(s)
- Fahad K Kidwai
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore
| | - Hua Liu
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore; Centre for Stem Cell and Tissue Engineering, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Wei Seong Toh
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore
| | - Xin Fu
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore; Plastic Surgery Hospital (Institute), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
| | - Doorgesh S Jokhun
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore
| | - Mohammad M Movahednia
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore
| | - Mingming Li
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore
| | - Yu Zou
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore
| | - Christopher A Squier
- Department of Oral Pathology, Radiology and Medicine, and Dows, College of Dentistry, The University of Iowa, Iowa City, Iowa, USA
| | - Toan T Phan
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Tong Cao
- Oral Sciences Disciplines, Faculty of Dentistry, National University of Singapore, Singapore.
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98
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Liu Y, Ma L, Gao C. Facile fabrication of the glutaraldehyde cross-linked collagen/chitosan porous scaffold for skin tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2012.07.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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99
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Müller SA, van der Smissen A, von Feilitzsch M, Anderegg U, Kalkhof S, von Bergen M. Quantitative proteomics reveals altered expression of extracellular matrix related proteins of human primary dermal fibroblasts in response to sulfated hyaluronan and collagen applied as artificial extracellular matrix. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:3053-3065. [PMID: 22990618 PMCID: PMC3506194 DOI: 10.1007/s10856-012-4760-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 08/27/2012] [Indexed: 06/01/2023]
Abstract
Fibroblasts are the main matrix producing cells of the dermis and are also strongly regulated by their matrix environment which can be used to improve and guide skin wound healing processes. Here, we systematically investigated the molecular effects on primary dermal fibroblasts in response to high-sulfated hyaluronan [HA] (hsHA) by quantitative proteomics. The comparison of non- and high-sulfated HA revealed regulation of 84 of more than 1,200 quantified proteins. Based on gene enrichment we found that sulfation of HA alters extracellular matrix remodeling. The collagen degrading enzymes cathepsin K, matrix metalloproteinases-2 and -14 were found to be down-regulated on hsHA. Additionally protein expression of thrombospondin-1, decorin, collagen types I and XII were reduced, whereas the expression of trophoblast glycoprotein and collagen type VI were slightly increased. This study demonstrates that global proteomics provides a valuable tool for revealing proteins involved in molecular effects of growth substrates for further material optimization.
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Affiliation(s)
- Stephan A. Müller
- Department of Proteomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Anja van der Smissen
- Department of Dermatology Venerology and Allergology, Leipzig University, 04103 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Margarete von Feilitzsch
- Department of Dermatology Venerology and Allergology, Leipzig University, 04103 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Ulf Anderegg
- Department of Dermatology Venerology and Allergology, Leipzig University, 04103 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Stefan Kalkhof
- Department of Proteomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Martin von Bergen
- Department of Proteomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Department of Metabolomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
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100
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Huss FR, Nyman E, Gustafson CJ, Gisselfält K, Liljensten E, Kratz G. Characterization of a new degradable polymer scaffold for regeneration of the dermis: In vitro and in vivo human studies. Organogenesis 2012; 4:195-200. [PMID: 19279733 DOI: 10.4161/org.4.3.6499] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2008] [Accepted: 06/25/2008] [Indexed: 11/19/2022] Open
Abstract
Full thickness skin wounds in humans heal with scars, but without regeneration of the dermis. A degradable poly(urethane urea) scaffold (PUUR), Artelon(R) is already used to reinforce soft tissues in orthopaedics, and for treatment of osteoarthritis of the hand, wrist and foot. In this paper we have done in vitro experiments followed by in vivo studies to find out whether the PUUR is biocompatible and usable as a template for dermal regeneration. Human dermal fibroblasts were cultured on discs of PUUR, with different macrostructures (fibrous and porous). They adhered to and migrated into the scaffolds, and produced collagen. The porous scaffold was judged more suitable for clinical applications and 4 mm Ø, 2 mm-thick discs of porous scaffold (12% w/w or 9% w/w polymer solution) were inserted intradermally in four healthy human volunteers. The implants were well tolerated and increasing ingrowth of fibroblasts was seen over time in all subjects. The fibroblasts stained immunohistochemically for procollagen and von Willebrand factor, indicating neocollagenesis and angiogenesis within the scaffolds. The PUUR scaffold may be a suitable material to use as a template for dermal regeneration.
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Affiliation(s)
- Fredrik Rm Huss
- Laboratory for Experimental Plastic Surgery; Department of Clinical and Experimental Medicine; Faculty of Health Sciences; Linköping University; Linköping Sweden
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