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Song H, Hao D, Zhou J, Farmer D, Wang A. Development of pro-angiogenic skin substitutes for wound healing. Wound Repair Regen 2024; 32:208-216. [PMID: 38308588 DOI: 10.1111/wrr.13154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/13/2023] [Accepted: 12/12/2023] [Indexed: 02/05/2024]
Abstract
Wounds pose significant challenges to public health, primarily due to the loss of the mechanical integrity and barrier function of the skin and impaired angiogenesis, causing physical morbidities and psychological trauma to affect patients. Reconstructing the vasculature of the wound bed is crucial for promoting wound healing, reducing scar formation and enhancing the quality of life for patients. The development of pro-angiogenic skin substitutes has emerged as a promising strategy to facilitate vascularization and expedite the healing process of burn wounds. This review provides an overview of the various types of skin substitutes employed in wound healing, explicitly emphasising those designed to enhance angiogenesis. Synthetic scaffolds, biological matrices and tissue-engineered constructs incorporating stem cells and primary cells, cell-derived extracellular vesicles (EVs), pro-angiogenic growth factors and peptides, as well as gene therapy-based skin substitutes are thoroughly examined. The review summarises the existing challenges, future directions and potential innovations in pro-angiogenic dressing for skin substitutes. It highlights the need for continued research to develop new technologies and combine multiple strategies and factors, and to overcome obstacles and advance the field, ultimately leading to improved outcomes for wound patients.
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Affiliation(s)
- Hengyue Song
- Center for Surgical Bioengineering, Department of Surgery, UC Davis Health, Sacramento, California, USA
- Department of Burns and Plastic Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California, USA
| | - Dake Hao
- Center for Surgical Bioengineering, Department of Surgery, UC Davis Health, Sacramento, California, USA
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California, USA
| | - Jianda Zhou
- Department of Burns and Plastic Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China
| | - Diana Farmer
- Center for Surgical Bioengineering, Department of Surgery, UC Davis Health, Sacramento, California, USA
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California, USA
| | - Aijun Wang
- Center for Surgical Bioengineering, Department of Surgery, UC Davis Health, Sacramento, California, USA
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, California, USA
- Department of Biomedical Engineering, UC Davis, Davis, California, USA
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Yu Q, Wang Q, Zhang L, Deng W, Cao X, Wang Z, Sun X, Yu J, Xu X. The applications of 3D printing in wound healing: the external delivery of stem cells and antibiosis. Adv Drug Deliv Rev 2023; 197:114823. [PMID: 37068658 DOI: 10.1016/j.addr.2023.114823] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 04/19/2023]
Abstract
As the global number of chronic wound patients rises, the financial burden and social pressure on patients increase daily. Stem cells have emerged as promising tissue engineering seed cells due to their enriched sources, multidirectional differentiation ability, and high proliferation rate. However, delivering them in vitro for the treatment of skin injury is still challenging. In addition, bacteria from the wound site and the environment can significantly impact wound healing. In the last decade, 3D bioprinting has dramatically enriched cell delivery systems. The produced scaffolds by this technique can be precisely localized within cells and perform antibacterial actions. In this review, we summarized the 3D bioprinting-based external delivery of stem cells and their antibiosis to improve wound healing.
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Affiliation(s)
- Qingtong Yu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Qilong Wang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Linzhi Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Wenwen Deng
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Xia Cao
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Zhe Wang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Xuan Sun
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Jiangnan Yu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Ximing Xu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China.
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3
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Dash BC, Korutla L, Vallabhajosyula P, Hsia HC. Unlocking the Potential of Induced Pluripotent Stem Cells for Wound Healing: The Next Frontier of Regenerative Medicine. Adv Wound Care (New Rochelle) 2022; 11:622-638. [PMID: 34155919 DOI: 10.1089/wound.2021.0049] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Significance: Nonhealing wounds are a significant burden for the health care system all over the world. Existing treatment options are not enough to promote healing, highlighting the urgent need for improved therapies. In addition, the current advancements in tissue-engineered skin constructs and stem cell-based therapies are facing significant hurdles due to the absence of a renewable source of functional cells. Recent Advances: Induced pluripotent stem cell technology (iPSC) is emerging as a novel tool to develop the next generation of personalized medicine for the treatment of chronic wounds. The iPSC provides unlimited access to various skin cells to generate complex personalized three-dimensional skin constructs for disease modeling and autologous grafts. Furthermore, the iPSC-based therapies can target distinct wound healing phases and have shown accelerating wound closure by enhancing angiogenesis, cell migration, tissue regeneration, and modulating inflammation. Critical Issues: Since the last decade, iPSC has been revolutionizing the field of wound healing and skin tissue engineering. Despite the current progress, safety and heterogeneity among iPSC lines are still major hurdles in addition to the lack of large animal studies. These challenges need to be addressed before translating an iPSC-based therapy to the clinic. Future Directions: Future considerations should be given to performing large animal studies to check the safety and efficiency of iPSC-based therapy in a wound healing setup. Furthermore, strategies should be developed to overcome variation between hiPSC lines, develop an efficient manufacturing process for iPSC-derived products, and generate complex skin constructs with vasculature and skin appendages.
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Affiliation(s)
- Biraja C Dash
- Department of Surgery (Plastic), Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Laxminarayana Korutla
- Department of Surgery (Cardiac), Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Prashanth Vallabhajosyula
- Department of Surgery (Cardiac), Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Henry C Hsia
- Department of Surgery (Plastic), Yale School of Medicine, Yale University, New Haven, Connecticut, USA.,Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA
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FLIM for Evaluation of Difference in Metabolic Status between Native and Differentiated from iPSCs Dermal Papilla Cells. Cells 2022; 11:cells11172730. [PMID: 36078136 PMCID: PMC9454864 DOI: 10.3390/cells11172730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 12/29/2022] Open
Abstract
iPSCs and their derivatives are the most promising cell sources for creating skin equivalents. However, their properties are not fully understood. In addition, new approaches and parameters are needed for studying cells in 3D models without destroying their organization. Thus, the aim of our work was to study and compare the metabolic status and pH of dermal spheroids created from dermal papilla cells differentiated from pluripotent stem cells (iDP) and native dermal papilla cells (hDP) using fluorescence microscopy and fluorescence lifetime imaging microscopy (FLIM). For this purpose, fluorescence intensities of NAD(P)H and FAD, fluorescence lifetimes, and the contributions of NAD(P)H, as well as the fluorescence intensities of SypHer-2 and BCECF were measured. iDP in spheroids were characterized by a more glycolytic phenotype and alkaline intra-cellular pH in comparison with hDP cells. Moreover, the metabolic activity of iDP in spheroids depends on the source of stem cells from which they were obtained. So, less differentiated and condensed spheroids from iDP-iPSDP and iDP-iPSKYOU are characterized by a more glycolytic phenotype compared to dense spheroids from iDP-DYP0730 and iDP-hES. FLIM and fluorescent microscopy in combination with the metabolism and pH are promising tools for minimally invasive and long-term analyses of 3D models based on stem cells.
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Zhong J, Wang H, Yang K, Wang H, Duan C, Ni N, An L, Luo Y, Zhao P, Gou Y, Sheng S, Shi D, Chen C, Wagstaff W, Hendren-Santiago B, Haydon RC, Luu HH, Reid RR, Ho SH, Ameer GA, Shen L, He TC, Fan J. Reversibly immortalized keratinocytes (iKera) facilitate re-epithelization and skin wound healing: Potential applications in cell-based skin tissue engineering. Bioact Mater 2022; 9:523-540. [PMID: 34820586 PMCID: PMC8581279 DOI: 10.1016/j.bioactmat.2021.07.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/09/2021] [Accepted: 07/19/2021] [Indexed: 12/15/2022] Open
Abstract
Skin injury is repaired through a multi-phase wound healing process of tissue granulation and re-epithelialization. Any failure in the healing process may lead to chronic non-healing wounds or abnormal scar formation. Although significant progress has been made in developing novel scaffolds and/or cell-based therapeutic strategies to promote wound healing, effective management of large chronic skin wounds remains a clinical challenge. Keratinocytes are critical to re-epithelialization and wound healing. Here, we investigated whether exogenous keratinocytes, in combination with a citrate-based scaffold, enhanced skin wound healing. We first established reversibly immortalized mouse keratinocytes (iKera), and confirmed that the iKera cells expressed keratinocyte markers, and were responsive to UVB treatment, and were non-tumorigenic. In a proof-of-principle experiment, we demonstrated that iKera cells embedded in citrate-based scaffold PPCN provided more effective re-epithelialization and cutaneous wound healing than that of either PPCN or iKera cells alone, in a mouse skin wound model. Thus, these results demonstrate that iKera cells may serve as a valuable skin epithelial source when, combining with appropriate biocompatible scaffolds, to investigate cutaneous wound healing and skin regeneration.
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Affiliation(s)
- Jiamin Zhong
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Hao Wang
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Ke Yang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- The Pediatric Research Institute, The Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Huifeng Wang
- Biomedical Engineering Department, Northwestern University, Evanston, IL, 60208, USA
| | - Chongwen Duan
- Biomedical Engineering Department, Northwestern University, Evanston, IL, 60208, USA
| | - Na Ni
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Liqin An
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yetao Luo
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Piao Zhao
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Yannian Gou
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Shiyan Sheng
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Deyao Shi
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Orthopaedics, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Connie Chen
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - William Wagstaff
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Bryce Hendren-Santiago
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Rex C. Haydon
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Hue H. Luu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Russell R. Reid
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Surgery, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Center for Advanced Regenerative Engineering (CARE), Evanston, IL, 60208, USA
| | - Sherwin H. Ho
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Guillermo A. Ameer
- Biomedical Engineering Department, Northwestern University, Evanston, IL, 60208, USA
- Center for Advanced Regenerative Engineering (CARE), Evanston, IL, 60208, USA
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60616, USA
| | - Le Shen
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Surgery, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Surgery, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Center for Advanced Regenerative Engineering (CARE), Evanston, IL, 60208, USA
| | - Jiaming Fan
- Ministry of Education Key Laboratory of Diagnostic Medicine, And Department of Clinical Biochemistry, School of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
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6
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Aavani F, Biazar E, Kheilnezhad B, Amjad F. 3D Bio-printing For Skin Tissue Regeneration: Hopes and Hurdles. Curr Stem Cell Res Ther 2022; 17:415-439. [DOI: 10.2174/1574888x17666220204144544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/10/2021] [Accepted: 12/03/2021] [Indexed: 11/22/2022]
Abstract
Abstract:
For many years, discovering the appropriate methods for the treatment of skin irritation has been challenging for specialists and researchers. Bio-printing can be extensively applied to address the demand for proper skin substitutes to improve skin damage. Nowadays, to make more effective bio-mimicking of natural skin, many research teams have developed cell-seeded bio-inks for bioprinting of skin substitutes. These loaded cells can be single or co-cultured in these structures. The present review gives a comprehensive overview of the methods, substantial parameters of skin bioprinting, examples of in vitro and in vivo studies, and current advances and challenges for skin tissue engineering.
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Affiliation(s)
- Farzaneh. Aavani
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Esmaeil Biazar
- Tissue Engineering Group, Department of Biomedical Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Bahareh Kheilnezhad
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Fatemeh Amjad
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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Boyd KP, Asumda FZ, Hand JL. Update on Clinically Relevant Genetic Testing in Pediatric Dermatology. Dermatol Clin 2021; 40:1-8. [PMID: 34799030 DOI: 10.1016/j.det.2021.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Clinical genetic testing enables the detection of specific gene mutations and variants that predispose individuals and their family members to disease. In recent years, tremendous strides have been made in the variety of clinically useful tests. Targeted testing for specific mutations that cause well-known syndromes enables the efficient diagnosis of genetic diseases with cutaneous manifestations. Testing for specific genes, however, may not always reveal a diagnosis. Expanded options are available. This review outlines the major types of available technology with a focus on those tests most useful for pediatric dermatologists.
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Affiliation(s)
- Kevin P Boyd
- Department of Dermatology, Mayo Clinic, 200 1st Street Southwest, Rochester, MN 55905, USA
| | - Faizal Z Asumda
- Department of Clinical Genomics, Mayo Clinic, 200 1st Street Southwest, Rochester, MN 55905, USA
| | - Jennifer L Hand
- Department of Dermatology, Mayo Clinic, 200 1st Street Southwest, Rochester, MN 55905, USA; Department of Clinical Genomics, Mayo Clinic, 200 1st Street Southwest, Rochester, MN 55905, USA; Department of Pediatric and Adolescent Medicine, Mayo Clinic, 200 1st Street Southwest, Rochester, MN 55905, USA.
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8
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Fukuyama M, Tsukashima A, Kimishima M, Yamazaki Y, Okano H, Ohyama M. Human iPS Cell-Derived Cell Aggregates Exhibited Dermal Papilla Cell Properties in in vitro Three-Dimensional Assemblage Mimicking Hair Follicle Structures. Front Cell Dev Biol 2021; 9:590333. [PMID: 34409023 PMCID: PMC8365839 DOI: 10.3389/fcell.2021.590333] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 07/07/2021] [Indexed: 12/11/2022] Open
Abstract
Current approaches for human hair follicle (HF) regeneration mostly adopt cell-autonomous tissue reassembly in a permissive murine intracorporeal environment. This, together with the limitation in human-derived trichogenic starting materials, potentially hinders the bioengineering of human HF structures, especially for the drug discovery and treatment of hair loss disorders. In this study, we attempted to reproduce the anatomical relationship between an epithelial main body and the dermal papilla (DP) within HF in vitro by three-dimensionally assembling columnarly molded human keratinocytes (KCs) and the aggregates of DP cells and evaluated how HF characteristics were reproduced in the constructs. The replaceability of human-induced pluripotent stem cell (hiPSC)-derived DP substitutes was assessed using the aforementioned reconstruction assay. Human DP cell aggregates were embedded into Matrigel as a cluster. Subsequently, highly condensed human KCs were cylindrically injected onto DP spheroids. After 2-week culture, the structures visually mimicking HFs were obtained. KC-DP constructs partially reproduced HF microanatomy and demonstrated differential keratin (KRT) expression pattern in HFs: KRT14 in the outermost part and KRT13, KRT17, and KRT40, respectively, in the inner portion of the main body. KC-DP constructs tended to upregulate HF-related genes, KRT25, KRT33A, KRT82, WNT5A, and LEF1. Next, DP substitutes were prepared by exposing hiPSC-derived mesenchymal cells to retinoic acid and subsequently to WNT, BMP, and FGF signal activators, followed by cell aggregation. The resultant hiPSC-derived DP substitutes (iDPs) were combined with KCs in the invented assay. KC-iDP constructs morphologically resemble KC-DP constructs and analogously mimicked KRT expression pattern in HF. iDP in the constructs expressed DP-related markers, such as vimentin and versican. Intriguingly, KC-iDP constructs more intensely expressed KRT33A, KRT82, and LEF1, which were stepwisely upregulated by the addition of WNT ligand and the mixture of WNT, SHH, and EDA signaling activators, supporting the idea that iDP exhibited biological properties analogous to DP cell aggregates in the constructs in vitro. These preliminary findings suggested the possibility of regenerating DP equivalents with in vitro hair-inductive capacity using hiPSC-derived cell composites, which potentially reduce the necessity of human tissue-derived trichogenic cell subset and eventually allow xeno-free bioengineering of human HFs.
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Affiliation(s)
- Masahiro Fukuyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Aki Tsukashima
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Momoko Kimishima
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Yoshimi Yamazaki
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Manabu Ohyama
- Department of Dermatology, Kyorin University Faculty of Medicine, Tokyo, Japan
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Harman RM, Theoret CL, Van de Walle GR. The Horse as a Model for the Study of Cutaneous Wound Healing. Adv Wound Care (New Rochelle) 2021; 10:381-399. [PMID: 34042536 DOI: 10.1089/wound.2018.0883] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Significance: Cutaneous wounds are a major problem in both human and equine medicine. The economic cost of treating skin wounds and related complications in humans and horses is high, and in both species, particular types of chronic wounds do not respond well to current therapies, leading to suffering and morbidity. Recent Advances: Conventional methods for the treatment of cutaneous wounds are generic and have not changed significantly in decades. However, as more is learned about the mechanisms involved in normal skin wound healing, and how failure of these processes leads to chronic nonhealing wounds, novel therapies targeting the specific pathologies of hard-to-heal wounds are being developed and evaluated. Critical Issues: Physiologically relevant animal models are needed to (1) study the mechanisms involved in normal and impaired skin wound healing and (2) test newly developed therapies. Future Directions: Similarities in normal wound healing in humans and horses, and the natural development of distinct types of hard-to-heal chronic wounds in both species, make the horse a physiologically relevant model for the study of mechanisms involved in wound repair. Horses are also well-suited models to test novel therapies. In addition, studies in horses have the potential to benefit veterinary, as well as human medicine.
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Affiliation(s)
- Rebecca M. Harman
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York
| | | | - Gerlinde R. Van de Walle
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York
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10
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Rodrigues SC, Cardoso RMS, Duarte FV. Mitochondrial microRNAs: A Putative Role in Tissue Regeneration. BIOLOGY 2020; 9:biology9120486. [PMID: 33371511 PMCID: PMC7767490 DOI: 10.3390/biology9120486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 12/12/2022]
Abstract
The most famous role of mitochondria is to generate ATP through oxidative phosphorylation, a metabolic pathway that involves a chain of four protein complexes (the electron transport chain, ETC) that generates a proton-motive force that in turn drives the ATP synthesis by the Complex V (ATP synthase). An impressive number of more than 1000 mitochondrial proteins have been discovered. Since mitochondrial proteins have a dual genetic origin, it is predicted that ~99% of these proteins are nuclear-encoded and are synthesized in the cytoplasmatic compartment, being further imported through mitochondrial membrane transporters. The lasting 1% of mitochondrial proteins are encoded by the mitochondrial genome and synthesized by the mitochondrial ribosome (mitoribosome). As a result, an appropriate regulation of mitochondrial protein synthesis is absolutely required to achieve and maintain normal mitochondrial function. Regarding miRNAs in mitochondria, it is well-recognized nowadays that several cellular mechanisms involving mitochondria are regulated by many genetic players that originate from either nuclear- or mitochondrial-encoded small noncoding RNAs (sncRNAs). Growing evidence collected from whole genome and transcriptome sequencing highlight the role of distinct members of this class, from short interfering RNAs (siRNAs) to miRNAs and long noncoding RNAs (lncRNAs). Some of the mechanisms that have been shown to be modulated are the expression of mitochondrial proteins itself, as well as the more complex coordination of mitochondrial structure and dynamics with its function. We devote particular attention to the role of mitochondrial miRNAs and to their role in the modulation of several molecular processes that could ultimately contribute to tissue regeneration accomplishment.
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Affiliation(s)
- Sílvia C. Rodrigues
- Exogenus Therapeutics, 3060-197 Cantanhede, Portugal;
- Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research (IIIUC), University of Coimbra, 3004-504 Coimbra, Portugal
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
| | | | - Filipe V. Duarte
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
- Correspondence:
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Hsieh MK, Wu CJ, Su XC, Chen YC, Tsai TT, Niu CC, Lai PL, Wu SC. Bone regeneration in Ds-Red pig calvarial defect using allogenic transplantation of EGFP-pMSCs - A comparison of host cells and seeding cells in the scaffold. PLoS One 2019; 14:e0215499. [PMID: 31318872 PMCID: PMC6638893 DOI: 10.1371/journal.pone.0215499] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/31/2019] [Indexed: 12/13/2022] Open
Abstract
Background Cells, scaffolds, and factors are the triad of regenerative engineering; however, it is difficult to distinguish whether cells in the regenerative construct are from the seeded cells or host cells via the host blood supply. We performed a novel in vivo study to transplant enhanced green fluorescent pig mesenchymal stem cells (EGFP-pMSCs) into calvarial defect of DsRed pigs. The cell distribution and proportion were distinguished by the different fluorescent colors through the whole regenerative period. Method/Results Eight adult domestic Ds-Red pigs were treated with five modalities: empty defects without scaffold (group 1); defects filled only with scaffold (group 2); defects filled with osteoinduction medium-loaded scaffold (group 3); defects filled with 5 x 103 cells/scaffold (group 4); and defects filled with 5 x 104 cells/scaffold (group 5). The in vitro cell distribution, morphology, osteogenic differentiation, and fluorescence images of groups 4 and 5 were analyzed. Two animals were sacrificed at 1, 2, 3, and 4 weeks after transplantation. The in vivo fluorescence imaging and quantification data showed that EGFP-pMSCs were represented in the scaffolds in groups 4 and 5 throughout the whole regenerative period. A higher seeded cell density resulted in more sustained seeded cells in bone regeneration compared to a lower seeded cell density. Host cells were recruited by seeded cells if enough space was available in the scaffold. Host cells in groups 1 to 3 did not change from the 1st week to 4th week, which indicates that the scaffold without seeded cells cannot recruit host cells even when enough space is available for cell ingrowth. The histological and immunohistochemical data showed that more cells were involved in osteogenesis in scaffolds with seeded cells. Conclusion Our in vivo results showed that more seeded cells recruit more host cells and that both cell types participate in osteogenesis. These results suggest that scaffolds without seeded cells may not be effective in bone transplantation.
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Affiliation(s)
- Ming-Kai Hsieh
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Jung Wu
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Xuan-Chun Su
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Yi-Chen Chen
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
- Center for Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Tsung-Ting Tsai
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chi-Chien Niu
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Po-Liang Lai
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- * E-mail: (PLL); (SCW)
| | - Shinn-Chih Wu
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
- Center for Biotechnology, National Taiwan University, Taipei, Taiwan
- * E-mail: (PLL); (SCW)
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Ohyama M. Use of human intra-tissue stem/progenitor cells and induced pluripotent stem cells for hair follicle regeneration. Inflamm Regen 2019; 39:4. [PMID: 30834027 PMCID: PMC6388497 DOI: 10.1186/s41232-019-0093-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/23/2019] [Indexed: 01/07/2023] Open
Abstract
Background The hair follicle (HF) is a unique miniorgan, which self-renews for a lifetime. Stem cell populations of multiple lineages reside within human HF and enable its regeneration. In addition to resident HF stem/progenitor cells (HFSPCs), the cells with similar biological properties can be induced from human-induced pluripotent stem cells (hiPSCs). As approaches to regenerate HF by combining HF-derived cells have been established in rodents and a huge demand exists to treat hair loss diseases, attempts have been made to bioengineer human HF using HFSPCs or hiPSCs. Main body of the abstract The aim of this review is to comprehensively summarize the strategies to regenerate human HF using HFSPCs or hiPSCs. HF morphogenesis and regeneration are enabled by well-orchestrated epithelial-mesenchymal interactions (EMIs). In rodents, various combinations of keratinocytes with mesenchymal (dermal) cells with trichogenic capacity, which were transplanted into in vivo environment, have successfully generated HF structures. The regeneration efficiency was higher, when epithelial or dermal HFSPCs were adopted. The success in HF formation most likely depended on high receptivity to trichogenic dermal signals and/or potent hair inductive capacity of HFSPCs. In theory, the use of epithelial HFSPCs in the bulge area and dermal papilla cells, their precursor cells in the dermal sheath, or trichogenic neonatal dermal cells should elicit intense EMI sufficient for HF formation. However, technical hurdles, represented by the limitation in starting materials and the loss of intrinsic properties during in vitro expansion, hamper the stable reconstitution of human HFs with this approach. Several strategies, including the amelioration of culture condition or compartmentalization of cells to strengthen EMI, can be conceived to overcome this obstacle. Obviously, use of hiPSCs can resolve the shortage of the materials once reliable protocols to induce wanted HFSPC subsets have been developed, which is in progress. Taking advantage of their pluripotency, hiPSCs may facilitate previously unthinkable approaches to regenerate human HFs, for instance, via bioengineering of 3D integumentary organ system, which can also be applied for the treatment of other diseases. Short conclusion Further development of methodologies to reproduce bona fide EMI in HF formation is indispensable. However, human HFSPCs and hiPSCs hold promise as materials for human HF regeneration.
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Affiliation(s)
- Manabu Ohyama
- Department of Dermatology, Kyorin University Faculty of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo, 181-8611 Japan
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Hsieh MK, Wu CJ, Chen CC, Tsai TT, Niu CC, Wu SC, Lai PL. BMP-2 gene transfection of bone marrow stromal cells to induce osteoblastic differentiation in a rat calvarial defect model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:806-816. [PMID: 30033316 DOI: 10.1016/j.msec.2018.06.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 05/09/2018] [Accepted: 06/07/2018] [Indexed: 12/22/2022]
Abstract
Gene therapy for bone tissue engineering has been widely developed. Recently, non-viral DNA-based gene therapy has been reported to be a safer and more efficient method of delivering DNA into target cells. We used a non-viral gene transfection reagent to delivery bone morphogenetic protein-2 (BMP-2) gene into bone marrow stromal cells (BMSCs). Primary BMSCs were isolated from rat femurs and transfected with BMP-2 plasmids. The transfection rate was analyzed using flow cytometry. The concentration of BMP-2 protein was quantified using an enzyme-linked immunosorbent assay. Levels of osteopontin and osteocalcin were measured to evaluate osteogenic differentiation. In vivo, we designed a critical-size calvarial defect rat model to study new bone regeneration, using Matrigel as a scaffold to carry BMP-2-transfected bone marrow stromal cells into the defect site. New bone formation was assessed by micro-computed tomography, X-ray, immunohistochemical staining and histomophometry. The transfection rate after 72 h was 31.5%. The BMP-2 protein level as well as osteopontin and osteocalcin expressions were higher in the experimental group (transfected with BMP-2) than the control group (transfected with green fluorescent protein, GFP). The in vivo study suggested that bone healing occurred 12 weeks after scaffold implantation. In addition, BMP-2-transfected bone marrow stromal cells provided better osteogenic differentiation than primary bone marrow stromal cells. Our findings suggest that non-viral gene therapy may be useful in bone tissue engineering. SIGNIFICANCE The study has clinical implications for the wider use of BMP-2-transfected BMSCs for cell-based transplantation therapy in bone regeneration.
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Affiliation(s)
- Ming-Kai Hsieh
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan; Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Jung Wu
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chun-Chieh Chen
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Tsung-Ting Tsai
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chi-Chien Niu
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shinn-Chih Wu
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan; Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan.
| | - Po-Liang Lai
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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Veraitch O, Mabuchi Y, Matsuzaki Y, Sasaki T, Okuno H, Tsukashima A, Amagai M, Okano H, Ohyama M. Induction of hair follicle dermal papilla cell properties in human induced pluripotent stem cell-derived multipotent LNGFR(+)THY-1(+) mesenchymal cells. Sci Rep 2017; 7:42777. [PMID: 28220862 PMCID: PMC5318903 DOI: 10.1038/srep42777] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 01/16/2017] [Indexed: 12/19/2022] Open
Abstract
The dermal papilla (DP) is a specialised mesenchymal component of the hair follicle (HF) that plays key roles in HF morphogenesis and regeneration. Current technical difficulties in preparing trichogenic human DP cells could be overcome by the use of highly proliferative and plastic human induced pluripotent stem cells (hiPSCs). In this study, hiPSCs were differentiated into induced mesenchymal cells (iMCs) with a bone marrow stromal cell phenotype. A highly proliferative and plastic LNGFR(+)THY-1(+) subset of iMCs was subsequently programmed using retinoic acid and DP cell activating culture medium to acquire DP properties. The resultant cells (induced DP-substituting cells [iDPSCs]) exhibited up-regulated DP markers, interacted with human keratinocytes to up-regulate HF related genes, and when co-grafted with human keratinocytes in vivo gave rise to fibre structures with a hair cuticle-like coat resembling the hair shaft, as confirmed by scanning electron microscope analysis. Furthermore, iDPSCs responded to the clinically used hair growth reagent, minoxidil sulfate, to up-regulate DP genes, further supporting that they were capable of, at least in part, reproducing DP properties. Thus, LNGFR(+)THY-1(+) iMCs may provide material for HF bioengineering and drug screening for hair diseases.
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Affiliation(s)
- Ophelia Veraitch
- Department of Dermatology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yo Mabuchi
- Department of Physiology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Yumi Matsuzaki
- Department of Physiology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Laboratory of Tumor Biology, Department of Life Sciences, Faculty of Medicine, Shimane University, Shiojicho 89-1, Izumo-shi, Shimane, 693-8501, Japan
| | - Takashi Sasaki
- KOSÉ Endowed Program for Skin Care and Allergy Prevention, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hironobu Okuno
- Department of Physiology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Aki Tsukashima
- Department of Dermatology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Dermatology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka-shi, Tokyo, Japan
| | - Masayuki Amagai
- Department of Dermatology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Manabu Ohyama
- Department of Dermatology, Keio University School of Medicine 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Dermatology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka-shi, Tokyo, Japan
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Mohammadi P, Youssef KK, Abbasalizadeh S, Baharvand H, Aghdami N. Human Hair Reconstruction: Close, But Yet So Far. Stem Cells Dev 2016; 25:1767-1779. [PMID: 27649771 DOI: 10.1089/scd.2016.0137] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Billions of dollars are annually invested in pharmaceutical industry and cosmetic sector with intent to develop new drugs and treatment strategies for alopecia. Because the hair looks an important characteristic of humans-an effective appendage in perception, expression of beauty, and preservation of self-esteem-the global market for hair loss treatment products is exponentially increasing. However, current methods to treat hair loss endure yet multiple challenges, such as unfavorable outcomes, nonpermanent and patient-dependent results, as well as unpredictable impacts, which limit their application. Over recent years, remarkable advances in the fields of regenerative medicine and hair tissue engineering have raised new hopes for introducing novel cell-based approaches to treat hair loss. Through cell-based approaches, it is possible to produce hair-like structures in the laboratory setting or manipulate cells in their native niche (in vivo lineage reprogramming) to reconstruct the hair follicle. However, challenging issues still exist with the functionality of cultured human hair cells, the proper selection of nonhair cell sources in cases of shortage of donor hair, and the development of defined culture conditions. Moreover, in the case of in vivo lineage reprogramming, selecting appropriate induction factors and their efficient delivery to guide resident cells into a hair fate-with the aim of reconstructing functional hair-still needs further explorations. In this study, we highlight recent advances and current challenges in hair loss treatment using cell-based approaches and provide novel insights for crucial steps, which must be taken into account to develop reproducible, safe, and efficient cell-based treatment.
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Affiliation(s)
- Parvaneh Mohammadi
- 1 Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology , ACECR, Tehran, Iran .,2 Department of Developmental Biology, University of Science and Culture , Tehran, Iran
| | - Khalil Kass Youssef
- 3 Department of Developmental Neurobiology, Instituto de Neurociencias CSIC-UMH , San Juan de Alicante, Spain
| | - Saeed Abbasalizadeh
- 1 Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology , ACECR, Tehran, Iran
| | - Hossein Baharvand
- 1 Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology , ACECR, Tehran, Iran .,2 Department of Developmental Biology, University of Science and Culture , Tehran, Iran
| | - Nasser Aghdami
- 1 Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology , ACECR, Tehran, Iran
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Oral biosciences: The annual review 2015. J Oral Biosci 2016. [DOI: 10.1016/j.job.2015.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Singh D, Singh D, Han SS. 3D Printing of Scaffold for Cells Delivery: Advances in Skin Tissue Engineering. Polymers (Basel) 2016; 8:polym8010019. [PMID: 30979115 PMCID: PMC6432526 DOI: 10.3390/polym8010019] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/08/2016] [Accepted: 01/08/2016] [Indexed: 01/01/2023] Open
Abstract
Injury or damage to tissue and organs is a major health problem, resulting in about half of the world’s annual healthcare expenditure every year. Advances in the fields of stem cells (SCs) and biomaterials processing have provided a tremendous leap for researchers to manipulate the dynamics between these two, and obtain a skin substitute that can completely heal the wounded areas. Although wound healing needs a coordinated interplay between cells, extracellular proteins and growth factors, the most important players in this process are the endogenous SCs, which activate the repair cascade by recruiting cells from different sites. Extra cellular matrix (ECM) proteins are activated by these SCs, which in turn aid in cellular migrations and finally secretion of growth factors that can seal and heal the wounds. The interaction between ECM proteins and SCs helps the skin to sustain the rigors of everyday activity, and in an attempt to attain this level of functionality in artificial three-dimensional (3D) constructs, tissue engineered biomaterials are fabricated using more advanced techniques such as bioprinting and laser assisted printing of the organs. This review provides a concise summary of the most recent advances that have been made in the area of polymer bio-fabrication using 3D bio printing used for encapsulating stem cells for skin regeneration. The focus of this review is to describe, in detail, the role of 3D architecture and arrangement of cells within this system that can heal wounds and aid in skin regeneration.
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Affiliation(s)
- Deepti Singh
- Department of Surgery, Yale School of Medicine, Yale University, New Haven, CT-06510, CT, USA.
| | - Dolly Singh
- Biomaterials Lab, Department of Nano, Medical & Polymer Materials, College of Engineering, Yeungnam University, 280 Daehak-ko, Gyeongsan, Gyeongsanbukdo 712-749, Korea.
| | - Sung Soo Han
- Biomaterials Lab, Department of Nano, Medical & Polymer Materials, College of Engineering, Yeungnam University, 280 Daehak-ko, Gyeongsan, Gyeongsanbukdo 712-749, Korea.
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20
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Yue J, Wu J, Liu D, Zhao X, Lu WW. BMP2 gene delivery to bone mesenchymal stem cell by chitosan-g-PEI nonviral vector. NANOSCALE RESEARCH LETTERS 2015; 10:203. [PMID: 25977673 PMCID: PMC4420764 DOI: 10.1186/s11671-015-0906-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 04/18/2015] [Indexed: 05/21/2023]
Abstract
Nanotechnology has made a significant impact on the development of nanomedicine. Nonviral vectors have been attracting more attention for the advantage of biosafety in gene delivery. Polyethylenimine (PEI)-conjugated chitosan (chitosan-g-PEI) emerged as a promising nonviral vector and has been demonstrated in many tumor cells. However, there is a lack of study focused on the behavior of this vector in stem cells which hold great potential in regenerative medicine. Therefore, in this study, in vitro gene delivering effect of chitosan-g-PEI was investigated in bone marrow stem cells. pIRES2-ZsGreen1-hBMP2 dual expression plasmid containing both the ZsGreen1 GFP reporter gene and the BMP2 functional gene was constructed for monitoring the transgene expression level. Chitosan-g-PEI-mediated gene transfer showed 17.2% of transfection efficiency and more than 80% of cell viability in stem cells. These values were higher than that of PEI. The expression of the delivered BMP2 gene in stem cells enhanced the osteogenic differentiation. These results demonstrated that chitosan-g-PEI is capable of applying in delivering gene to stem cells and providing potential applications in stem cell-based gene therapy.
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Affiliation(s)
- Jianhui Yue
- />Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Rd., Shenzhen, 518055 People’s Republic of China
- />Shenzhen Key Laboratory of Marine Biomedical Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Rd., Shenzhen, 518055 People’s Republic of China
| | - Jun Wu
- />Department of Orthopaedic and Traumatology, The University of Hong Kong, 21 Sassoon Rd., Pokfulam, Hong Kong, 999077 People’s Republic of China
| | - Di Liu
- />Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Rd., Shenzhen, 518055 People’s Republic of China
- />Department of Pharmacology, Harbin Medical University, 157 Baojian Rd., Harbin, 150081 People’s Republic of China
| | - Xiaoli Zhao
- />Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Rd., Shenzhen, 518055 People’s Republic of China
- />Shenzhen Key Laboratory of Marine Biomedical Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Rd., Shenzhen, 518055 People’s Republic of China
| | - William W Lu
- />Department of Orthopaedic and Traumatology, The University of Hong Kong, 21 Sassoon Rd., Pokfulam, Hong Kong, 999077 People’s Republic of China
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Thangapazham RL, Darling TN, Meyerle J. Alteration of skin properties with autologous dermal fibroblasts. Int J Mol Sci 2014; 15:8407-27. [PMID: 24828202 PMCID: PMC4057739 DOI: 10.3390/ijms15058407] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 04/19/2014] [Accepted: 05/06/2014] [Indexed: 12/16/2022] Open
Abstract
Dermal fibroblasts are mesenchymal cells found between the skin epidermis and subcutaneous tissue. They are primarily responsible for synthesizing collagen and glycosaminoglycans; components of extracellular matrix supporting the structural integrity of the skin. Dermal fibroblasts play a pivotal role in cutaneous wound healing and skin repair. Preclinical studies suggest wider applications of dermal fibroblasts ranging from skin based indications to non-skin tissue regeneration in tendon repair. One clinical application for autologous dermal fibroblasts has been approved by the Food and Drug Administration (FDA) while others are in preclinical development or various stages of regulatory approval. In this context, we outline the role of fibroblasts in wound healing and discuss recent advances and the current development pipeline for cellular therapies using autologous dermal fibroblasts. The microanatomic and phenotypic differences of fibroblasts occupying particular locations within the skin are reviewed, emphasizing the therapeutic relevance of attributes exhibited by subpopulations of fibroblasts. Special focus is provided to fibroblast characteristics that define regional differences in skin, including the thick and hairless skin of the palms and soles as compared to hair-bearing skin. This regional specificity and functional identity of fibroblasts provides another platform for developing regional skin applications such as the induction of hair follicles in bald scalp or alteration of the phenotype of stump skin in amputees to better support their prosthetic devices.
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Affiliation(s)
- Rajesh L Thangapazham
- Department of Dermatology, Uniformed Services University of the Health Sciences, Bethesda, MD 20851, USA.
| | - Thomas N Darling
- Department of Dermatology, Uniformed Services University of the Health Sciences, Bethesda, MD 20851, USA.
| | - Jon Meyerle
- Department of Dermatology, Uniformed Services University of the Health Sciences, Bethesda, MD 20851, USA.
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