1
|
Inomata Y, Kawatani N, Yamashita H, Hattori F. Lgr6-expressing functional nail stem-like cells differentiated from human-induced pluripotent stem cells. PLoS One 2024; 19:e0303260. [PMID: 38743670 PMCID: PMC11093308 DOI: 10.1371/journal.pone.0303260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 04/23/2024] [Indexed: 05/16/2024] Open
Abstract
The nail matrix containing stem cell populations produces nails and may contribute to fingertip regeneration. Nails are important tissues that maintain the functions of the hand and foot for handling objects and locomotion. Tumor chemotherapy impairs nail growth and, in many cases, loses them, although not permanently. In this report, we have achieved the successful differentiation of nail stem (NS)-like cells from human-induced pluripotent stem cells (iPSCs) via digit organoids by stepwise stimulation, tracing the molecular processes involved in limb development. Comprehensive mRNA sequencing analysis revealed that the digit organoid global gene expression profile fits human finger development. The NS-like cells expressed Lgr6 mRNA and protein and produced type-I keratin, KRT17, and type-II keratin, KRT81, which are abundant in nails. Furthermore, we succeeded in producing functional Lgr6-reporter human iPSCs. The reporter iPSC-derived Lgr6-positive cells also produced KRT17 and KRT81 proteins in the percutaneously transplanted region. To the best of our knowledge, this is the first report of NS-like cell differentiation from human iPSCs. Our differentiation method and reporter construct enable the discovery of drugs for nail repair and possibly fingertip-regenerative therapy.
Collapse
Affiliation(s)
- Yukino Inomata
- Innovative Regenerative Medicine, Graduate School of Medicine, Kansai Medical University, Hirakata city, Osaka, Japan
- Osaka College of High-Technology, Osaka City, Osaka, Japan
| | - Nano Kawatani
- Innovative Regenerative Medicine, Graduate School of Medicine, Kansai Medical University, Hirakata city, Osaka, Japan
- Osaka College of High-Technology, Osaka City, Osaka, Japan
| | - Hiromi Yamashita
- Innovative Regenerative Medicine, Graduate School of Medicine, Kansai Medical University, Hirakata city, Osaka, Japan
| | - Fumiyuki Hattori
- Innovative Regenerative Medicine, Graduate School of Medicine, Kansai Medical University, Hirakata city, Osaka, Japan
| |
Collapse
|
2
|
Danielian A, Danielian M, Cheng MY, Burton J, Han PS, Kerr RPR. Antiaging Effects of Topical Defensins. Facial Plast Surg Clin North Am 2023; 31:535-546. [PMID: 37806687 DOI: 10.1016/j.fsc.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Topical defensins have recently gained attention as agents to improve skin composition. This study aimed to aggregate and synthesize studies in the literature assessing the effects of topical defensins on skin composition in the context of its ability to combat signs of aging.
Collapse
Affiliation(s)
- Arman Danielian
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, 200 Medical Plaza, Suite 550, Los Angeles, CA 90095, USA
| | - Marie Danielian
- Independent Researcher, 200 Medical Plaza, Suite 550, Los Angeles, CA 90095, USA
| | - Melodyanne Y Cheng
- David Geffen School of Medicine at UCLA, 10833 Le Conte Ave, Los Angeles, CA 90095, USA
| | - Jason Burton
- University of California Los Angeles, 200 Medical Plaza, Suite 550, Los Angeles, CA 90095, USA
| | - Peter S Han
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, 200 Medical Plaza, Suite 550, Los Angeles, CA 90095, USA
| | - Rhorie P R Kerr
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, 200 Medical Plaza, Suite 550, Los Angeles, CA 90095, USA.
| |
Collapse
|
3
|
Eggerstedt M, Torres-Maldonado S, Danielian A, Hwang SHJ, Echanique KA. Impact of defensins-containing body cream on skin composition. J Cosmet Dermatol 2023; 22:620-627. [PMID: 35621235 PMCID: PMC10087582 DOI: 10.1111/jocd.15118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 05/25/2022] [Accepted: 04/29/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND AIMS Defensins are peptides capable of reactivating latent LGR6 stem cells in the basal layer. When applied topically, these peptides can reduce signs of skin aging and increase dermal thickness. This study investigates the effects of a topical defensin formulation on extremity skin composition. METHODS An open label, single arm clinical trial was conducted on participants with dry, photoaged, or dull skin. A defensin-containing hand and body cream was applied twice daily for 6 weeks to the hands, forearms, elbows, and knees. Photographs and objective measurements of skin hydration, viscoelasticity (VE), retraction time (RT), thickness, density/transepidermal water loss (TEWL), as well as self-evaluation of skin quality and characteristics were obtained pre- and post- intervention. RESULTS After the study period, RT decreased by 56% across all body sites (p < 0.001) and VE improved at the elbow (125%, p = 0.009) and knee (110%, p < 0.001). Skin density also increased in all 4 body sites (40%, p < 0.001), while skin thickness increased at the elbow (29%, p = 0.03) and knee (17%, p = 0.04). Skin hydration increased at the elbow, knee, and forearm by 99%, 28%, and 16%, respectively (p < 0.05), while TEWL improved at the elbow only (-39%, p = 0.02). Patients' self-evaluations showed improvements in overall skin quality and in the domains of dryness, ashiness, wrinkling, pigmentation, redness, roughness, and discomfort (p < 0.05). CONCLUSIONS Following 6-week use of a defensin-containing cream, subjects reported significant improvement across many subjective skin domains. Similarly, objective measurements demonstrated significant improvement in skin architecture at select sites.
Collapse
Affiliation(s)
- Michael Eggerstedt
- Department of Head and Neck Surgery, University of California, Los Angeles Medical Center, Los Angeles, California, USA.,Division of Facial Plastic and Reconstructive Surgery, Department of Head and Neck Surgery, University of California, Los Angeles Medical Center, Los Angeles, California, USA
| | - Solymar Torres-Maldonado
- Department of Head and Neck Surgery, University of California, Los Angeles Medical Center, Los Angeles, California, USA
| | - Arman Danielian
- Department of Head and Neck Surgery, University of California, Los Angeles Medical Center, Los Angeles, California, USA
| | - Song Hon Josh Hwang
- Department of Head and Neck Surgery, University of California, Los Angeles Medical Center, Los Angeles, California, USA
| | - Kristen A Echanique
- Department of Head and Neck Surgery, University of California, Los Angeles Medical Center, Los Angeles, California, USA
| |
Collapse
|
4
|
Li G, Wang Q, Feng J, Wang J, Wang Y, Huang X, Shao T, Deng X, Cao Y, Zhou M, Zhao C. Recent insights into the role of defensins in diabetic wound healing. Biomed Pharmacother 2022; 155:113694. [PMID: 36099789 DOI: 10.1016/j.biopha.2022.113694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/28/2022] Open
Abstract
Diabetic wound, one of the most common serious complications of diabetic patients, is an important factor in disability and death. Much of the research on the pathophysiology of diabetic wound healing has long focused on mechanisms mediated by hyperglycemia, chronic inflammation, microcirculatory and macrocirculatory dysfunction. However, recent evidence suggests that defensins may play a crucial role in the development and perpetuation of diabetic wound healing. The available findings suggest that defensins exert a beneficial influence on diabetic wound healing through antimicrobial, immunomodulatory, angiogenic, tissue regenerator effects, and insulin resistance improvement. Therefore, summarizing the existing research progress on defensins in the diabetic wound may present a promising strategy for diabetic patients.
Collapse
Affiliation(s)
- Gen Li
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Qixue Wang
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Institute for Interdisciplinary Medicine Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiawei Feng
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jialin Wang
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yuqing Wang
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xiaoting Huang
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Tengteng Shao
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China
| | - Xiaofei Deng
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China
| | - Yemin Cao
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China
| | - Mingmei Zhou
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China; Institute for Interdisciplinary Medicine Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Cheng Zhao
- Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China.
| |
Collapse
|
5
|
Wang X, Liu Y, He J, Wang J, Chen X, Yang R. Regulation of signaling pathways in hair follicle stem cells. BURNS & TRAUMA 2022; 10:tkac022. [PMID: 35795256 PMCID: PMC9250793 DOI: 10.1093/burnst/tkac022] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/07/2022] [Indexed: 11/21/2022]
Abstract
Hair follicle stem cells (HFSCs) reside in the bulge region of the outer root sheath of the hair follicle. They are considered slow-cycling cells that are endowed with multilineage differentiation potential and superior proliferative capacity. The normal morphology and periodic growth of HFSCs play a significant role in normal skin functions, wound repair and skin regeneration. The HFSCs involved in these pathophysiological processes are regulated by a series of cell signal transduction pathways, such as lymphoid enhancer factor/T-cell factor, Wnt/β-catenin, transforming growth factor-β/bone morphogenetic protein, Notch and Hedgehog. The mechanisms of the interactions among these signaling pathways and their regulatory effects on HFSCs have been previously studied, but many mechanisms are still unclear. This article reviews the regulation of hair follicles, HFSCs and related signaling pathways, with the aims of summarizing previous research results, revealing the regulatory mechanisms of HFSC proliferation and differentiation and providing important references and new ideas for treating clinical diseases.
Collapse
Affiliation(s)
| | | | - Jia He
- Department of Burn Surgery, The First People’s Hospital of Foshan, Foshan 528000, China
| | - Jingru Wang
- Department of Burn Surgery, The First People’s Hospital of Foshan, Foshan 528000, China
| | - Xiaodong Chen
- Correspondence. Xiaodong Chen, E-mail: ; Ronghua Yang,
| | - Ronghua Yang
- Correspondence. Xiaodong Chen, E-mail: ; Ronghua Yang,
| |
Collapse
|
6
|
de Souza GS, de Jesus Sonego L, Santos Mundim AC, de Miranda Moraes J, Sales-Campos H, Lorenzón EN. Antimicrobial-wound healing peptides: Dual-function molecules for the treatment of skin injuries. Peptides 2022; 148:170707. [PMID: 34896165 DOI: 10.1016/j.peptides.2021.170707] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 12/20/2022]
Abstract
Chronic non-healing wounds caused by microbial infections extend the necessity for hospital care and constitute a public health problem and a great financial burden. Classic therapies include a wide range of approaches, from wound debridement to vascular surgery. Antimicrobial peptides (AMPs) are a preserved trait of the innate immune response among different animal species, with known effects on the immune system and microorganisms. Thus, AMPs may represent promising candidates for the treatment of chronic wounds with dual functionality in two of the main agents that lead to this condition, proliferation of microorganisms and uncontrolled inflammation. Here, our goal is to critically review AMPs with wound healing properties. We strongly believe that these dual-function peptides alone, or in combination with other wound healing strategies, constitute an underexplored field that researchers can take advantage of.
Collapse
Affiliation(s)
| | | | | | | | - Helioswilton Sales-Campos
- Instituto de Patologia Tropical e Saúde Pública, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Goiás, Brazil
| | | |
Collapse
|
7
|
Hu XM, Li ZX, Zhang DY, Yang YC, Fu SA, Zhang ZQ, Yang RH, Xiong K. A systematic summary of survival and death signalling during the life of hair follicle stem cells. Stem Cell Res Ther 2021; 12:453. [PMID: 34380571 PMCID: PMC8359037 DOI: 10.1186/s13287-021-02527-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/26/2021] [Indexed: 12/13/2022] Open
Abstract
Hair follicle stem cells (HFSCs) are among the most widely available resources and most frequently approved model systems used for studying adult stem cells. HFSCs are particularly useful because of their self-renewal and differentiation properties. Additionally, the cyclic growth of hair follicles is driven by HFSCs. There are high expectations for the use of HFSCs as favourable systems for studying the molecular mechanisms that contribute to HFSC identification and can be applied to hair loss therapy, such as the activation or regeneration of hair follicles, and to the generation of hair using a tissue-engineering strategy. A variety of molecules are involved in the networks that critically regulate the fate of HFSCs, such as factors in hair follicle growth and development (in the Wnt pathway, Sonic hedgehog pathway, Notch pathway, and BMP pathway), and that suppress apoptotic cues (the apoptosis pathway). Here, we review the life cycle, biomarkers and functions of HFSCs, concluding with a summary of the signalling pathways involved in HFSC fate for promoting better understanding of the pathophysiological changes in the HFSC niche. Importantly, we highlight the potential mechanisms underlying the therapeutic targets involved in pathways associated with the treatment of hair loss and other disorders of skin and hair, including alopecia, skin cancer, skin inflammation, and skin wound healing.
Collapse
Affiliation(s)
- Xi-Min Hu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China.,Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Zhi-Xin Li
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China
| | - Dan-Yi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China
| | - Yi-Chao Yang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China
| | - Shen-Ao Fu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China
| | - Zai-Qiu Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China
| | - Rong-Hua Yang
- Department of Burn Surgery, The First People's Hospital of Foshan, #81, Lingnan North Road, Foshan, 528000, China.
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Morphological Sciences Building, 172 Tongzi Po Road, Changsha, 410013, China. .,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, China.
| |
Collapse
|
8
|
Luo G, Sun Y, Zhang J, Xu Z, Lu W, Wang H, Zhang Y, Li H, Mao Z, Ye S, Cheng B, Fang X. Nanodefensin-encased hydrogel with dual bactericidal and pro-regenerative functions for advanced wound therapy. Am J Cancer Res 2021; 11:3642-3660. [PMID: 33664853 PMCID: PMC7914350 DOI: 10.7150/thno.53089] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/31/2020] [Indexed: 12/25/2022] Open
Abstract
Background: Host defense peptides (HDPs) have emerged as a novel therapeutic paradigm for wound management; however, their clinical applications remain a challenge owing to their poor pharmacological properties and lack of suitable pharmaceutical formulations. Nanodefensin (ND), a nanoengineered human α-defensin 5 (HD5), has shown improved pharmacological properties relative to the parent compound. In this study, we engineered a nanodefensin-encased hydrogel (NDEFgel), investigated the effects of NDEFgel on wound healing, and elucidated underlying mechanisms. Method: ND was chemically synthesized and tested functions by in vitro antimicrobial and scratch assays and western blotting. Different NDEFgels were evaluated by in vitro characterizations including degradation, drug release and antimicrobial activity. In full-thickness excisional murine models, the optimal NDEFgel was directly applied onto wound sites, and the efficacy was assessed. Moreover, the underlying mechanisms of pro-regenerative effect developed by NDEFgel were also explored. Results: Apart from bactericidal effects, ND modulated fibroblast behaviors by promoting migration and differentiation. Among the tested hydrogels, the Pluronic F127 (Plu) hydrogel represented the most desirable carrier for ND delivery owing to its favorable controlled release and compatibility with ND. Local treatment of NDEFgel on the wound bed resulted in accelerated wound regeneration and attenuated bacterial burden. We further demonstrated that NDEFgel therapy significantly upregulated genes related to collagen deposition and fibroblasts, and increased the expression of myofibroblasts and Rac1. We therefore found that Rac1 is a critical factor in the ND-induced modulation of fibroblast behaviors in vitro through a Rac1-dependent cytoskeletal rearrangement. Conclusion: Our results indicate that NDEFgel may be a promising dual-action therapeutic option for advanced wound management in the future.
Collapse
|
9
|
Berens AM, Ghazizadeh S. Effect of defensins-containing eye cream on periocular rhytids and skin quality. J Cosmet Dermatol 2020; 19:2000-2005. [PMID: 32614135 DOI: 10.1111/jocd.13424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 01/20/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Defensins are peptides shown to activate LGR6 stem cells to stimulate the production of new basal stem cells in the epidermis. Use of topical definsin-containing products has been shown to address signs of global skin aging including decrease of wrinkles and increase of epidermal thickness. AIMS To investigate the ability of a topical defensin-containing skincare product in improving the structure and function of aging periocular skin using objective and subjective outcome measures. PATIENTS/METHODS A prospective pilot trial of a defensin-containing eye cream was performed in patients with periocular rhytids over 6 weeks. Subjective changes in skin quality and aging characteristics were compared using a patient survey tool. Objective changes in periocular skin quality were analyzed using the QuantifiCare imaging system and the DermLab ultrasound scanner by blinded reviewers. RESULTS A total of eight patients completed treatment; two were male, and six were female. The average age was 51 years (range 37-63). Compliance with product application as reported on the participant application log was over 90%. Overall, there was an average 2.1 point improvement in subjective measures of skin quality on the consumer questionnaire (P = .002). QuantifiCare imaging of pores, wrinkles, and oiliness showed 370% improvement, 55% improvement, and 12% improvement, respectively. DermaLab noninvasive measurements of elasticity, skin thickness, and hydration showed improvement of 120%, 28%, and 6%, respectively. CONCLUSION The use of topical formulations of definsin-containing eye cream statically improves patient-reported outcomes of skin quality, especially redness, sensitivity to weather, age spots, and crow's feet.
Collapse
Affiliation(s)
- Angelique M Berens
- Gregory Keller Plastic Surgery, Santa Barbara, California.,Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California
| | | |
Collapse
|
10
|
Yang R, Liu F, Wang J, Chen X, Xie J, Xiong K. Epidermal stem cells in wound healing and their clinical applications. Stem Cell Res Ther 2019; 10:229. [PMID: 31358069 PMCID: PMC6664527 DOI: 10.1186/s13287-019-1312-z] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The skin has important barrier, sensory, and immune functions, contributing to the health and integrity of the organism. Extensive skin injuries that threaten the entire organism require immediate and effective treatment. Wound healing is a natural response, but in severe conditions, such as burns and diabetes, this process is insufficient to achieve effective treatment. Epidermal stem cells (EPSCs) are a multipotent cell type and are committed to the formation and differentiation of the functional epidermis. As the contributions of EPSCs in wound healing and tissue regeneration have been increasingly attracting the attention of researchers, a rising number of therapies based on EPSCs are currently under development. In this paper, we review the characteristics of EPSCs and the mechanisms underlying their functions during wound healing. Applications of EPSCs are also discussed to determine the potential and feasibility of using EPSCs clinically in wound healing.
Collapse
Affiliation(s)
- Ronghua Yang
- Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, 528000, China
| | - Fengxia Liu
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Urumqi, 830001, China
| | - Jingru Wang
- Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, 528000, China
| | - Xiaodong Chen
- Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, 528000, China
| | - Julin Xie
- Department of Burn Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 512100, China.
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Morphological Sciences Building, Central South University, 172 Tongzi Po Road, Changsha, 410013, Hunan, China.
| |
Collapse
|
11
|
Relevant Topical Skin Care Products for Prevention and Treatment of Aging Skin. Facial Plast Surg Clin North Am 2019; 27:413-418. [PMID: 31280856 DOI: 10.1016/j.fsc.2019.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Options for skin care are varied. New products are introduced constantly and it is important for the practitioner to have an understanding of products that impart beneficial results for aging skin. Educating patients to use products with scientifically proven benefits leads to better outcomes. Patients should be encouraged to use daily sunscreen, a topical retinoid every night, and a topical antioxidant daily. Supplementing the routine skin care regimen with alpha hydroxy acids, growth factors, heparin sulfate, and defensins can be addressed individually. Exogenous stem cells do not have sufficient evidence to warrant recommending them currently.
Collapse
|
12
|
|
13
|
|
14
|
Baumann L. How to Use Oral and Topical Cosmeceuticals to Prevent and Treat Skin Aging. Facial Plast Surg Clin North Am 2018; 26:407-413. [PMID: 30213422 DOI: 10.1016/j.fsc.2018.06.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Skin aging is caused by DNA damage in nuclei and mitochondria, inflammation, glycation, decreased function of keratinocytes and fibroblasts and breakdown of heparan sulfate, hyaluronic acid, collagen, and elastin. Identifying patients at an increased risk of skin aging using a standardized methodology to diagnose the Baumann Skin Type will allow doctors to prescribe an efficacious antiaging skin care regimen. Cosmeceuticals can activate LGR6+ stem cells, improve cell response to signals such as growth factors, stimulate collagen genes, neutralize free radicals, and decrease breakdown of collagen and elastin. Giving written instructions will increase patient compliance and improve outcomes.
Collapse
Affiliation(s)
- Leslie Baumann
- Division of Cosmetic Dermatology, University of Miami, 4500 Biscayne Boulevard Suite 101, Miami, FL 33137, USA.
| |
Collapse
|
15
|
Rauner G, Kudinov T, Gilad S, Hornung G, Barash I. High Expression of CD200 and CD200R1 Distinguishes Stem and Progenitor Cell Populations within Mammary Repopulating Units. Stem Cell Reports 2018; 11:288-302. [PMID: 29937142 PMCID: PMC6067058 DOI: 10.1016/j.stemcr.2018.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 05/23/2018] [Accepted: 05/23/2018] [Indexed: 01/13/2023] Open
Abstract
Aiming to unravel the top of the mammary epithelial cell hierarchy, a subset of the CD49fhighCD24med mammary repopulating units (MRUs) was identified by flow cytometry, expressing high levels of CD200 and its receptor CD200R1. These MRUCD200/CD200R1 repopulated a larger area of de-epithelized mammary fat pads than the rest of the MRUs, termed MRUnot CD200/CD200R1. MRUCD200/CD200R1 maintained a much lower number of divergently defined, highly expressed genes and pathways that support better cell growth, development, differentiation, and progenitor activity than their MRUnot CD200/CD200R1 counterparts. A defined profile of hierarchically associated genes supporting a single-lineage hypothesis was confirmed by in vitro mammosphere analysis that assembled 114 genes with decreased expression from MRUCD200/CD200R1 via MRUnot CD200/CD200R1 toward CD200+CD200R1- and CD200R1+CD200- cells. About 40% of these genes were shared by a previously published database of upregulated genes in mammary/breast stem cells and may represent the core genes involved in mammary stemness.
Collapse
Affiliation(s)
- Gat Rauner
- Institute of Animal Science, ARO, The Volcani Center, Bet-Dagan 50250, Israel; The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Jerusalem 7610001, Israel
| | - Tania Kudinov
- Institute of Animal Science, ARO, The Volcani Center, Bet-Dagan 50250, Israel; The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Jerusalem 7610001, Israel
| | - Shlomit Gilad
- The Nancy & Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Gil Hornung
- The Nancy & Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Itamar Barash
- Institute of Animal Science, ARO, The Volcani Center, Bet-Dagan 50250, Israel.
| |
Collapse
|
16
|
Jin X, Zhang M, Zhu XM, Fan YR, Du CG, Bao HE, Xu SG, Tian QZ, Wang YH, Yang YF. Modulation of ovine SBD-1 expression by Saccharomyces cerevisiae in ovine ruminal epithelial cells. BMC Vet Res 2018; 14:134. [PMID: 29673353 PMCID: PMC5907711 DOI: 10.1186/s12917-018-1445-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 03/26/2018] [Indexed: 11/10/2022] Open
Abstract
Background The ovine rumen is involved in host defense responses and acts as the immune interface with the environment. The ruminal mucosal epithelium plays an important role in innate immunity and secretes antimicrobial innate immune molecules that have bactericidal activity against a variety of pathogens. Defensins are cationic peptides that are produced by the mucosal epithelia and have broad-spectrum antimicrobial activity. Sheep β-defensin-1 (SBD-1) is one of the most important antibacterial peptides in the rumen. The expression of SBD-1 is regulated by the probiotic, Saccharomyces cerevisiae (S.c); however, the regulatory mechanism has not yet been elucidated. In the current study, the effects of S.c on the expression and secretion of SBD-1 in ovine ruminal epithelial cells were investigated using quantitative real-time PCR (qPCR) and enzyme-linked immunosorbent assay (ELISA). In addition, specific inhibitors were used to block the nuclear factor kappa-light-chain enhancer of activated B cells (NF-κB), p38, JNK, and ERK1/2 signalling pathways separately or simultaneously, to determine the regulatory mechanism(s) governing S.c-induced SBD-1 upregulation. Results Incubation with S.c induced release of SBD-1 by ovine ruminal epithelial cells, with SBD-1 expression peaking after 12 h of incubation. The highest SBD-1 expression levels were achieved after treatment with 5.2 × 107 CFU∙mL− 1 S.c. Treatment with S.c resulted in significantly increased NF-κB, p38, JNK, ERK1/2, TLR2, and MyD88 mRNA expression. Whereas inhibition of mitogen-activated protein kinases (MAPKs) and NF-κB gene expression led to a decrease in SBD-1 expression. Conclusions S.c was induced SBD-1 expression and the S.c-induced up-regulation of SBD-1 expression may be related to TLR2 and MyD88 in ovine ruminal epithelial cells. This is likely simultaneously regulated by the MAPKs and NF-κB pathways with the p38 axis of the MAPKs pathway acting as the primary regulator. Thus, the pathways regulating S.c-induced SBD-1 expression may be related to TLR2-MyD88-NF-κB/MAPKs, with the TLR2-MyD88-p38 component of the TLR2-MyD88-MAPKs signalling acting as the main pathway.
Collapse
Affiliation(s)
- Xin Jin
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Man Zhang
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Xue-Min Zhu
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China.,College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471000, People's Republic of China
| | - Yan-Ru Fan
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Chen-Guang Du
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China.,Vocational and Technical College of Inner Mongolia Agricultural University, Baotou, 014109, People's Republic of China
| | - Hua-Er Bao
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Siri-Guleng Xu
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Qiao-Zhen Tian
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Yun-He Wang
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China.,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China
| | - Yin-Feng Yang
- Veterinary Medicine College of Inner Mongolia Agricultural University, Hohhot, 010018, People's Republic of China. .,Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture, Hohhot, 010018, People's Republic of China.
| |
Collapse
|
17
|
Felgueiras HP, Amorim MTP. Functionalization of electrospun polymeric wound dressings with antimicrobial peptides. Colloids Surf B Biointerfaces 2017; 156:133-148. [PMID: 28527357 DOI: 10.1016/j.colsurfb.2017.05.001] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 04/28/2017] [Accepted: 05/01/2017] [Indexed: 12/31/2022]
Abstract
Wound dressings have evolved considerably since ancient times. Modern dressings are now important systems that combine the physical and biochemical properties of natural and synthetic polymers with active compounds that are beneficial to wound healing. Antimicrobial peptides (AMPs) are the most recent addition to these systems. These aim to control the microbial proliferation and colonization of pathogens and to modulate the host's immune response. In the last decade, electrospun wound dressings have been extensively studied and the electrospinning technique recognized as an efficient approach for the production of nanoscale fibrous mats. The control of the electrospinning processing parameters, the selection of the polymer and AMPs, and the definition of the most appropriate AMPs' functionalization method contribute to the successful treatment of acute and chronic wounds. Although the use of electrospinning in wound dressings' production has been previously reviewed, the increased development of AMPs and the establishment of functionalization methods for wound dressings over recent years has increased the need for such research. In the present review, we approach all these subjects and reveal the promising therapeutic potential of wound dressings functionalized with AMPs.
Collapse
Affiliation(s)
- Helena P Felgueiras
- 2C2T, Centre for Science and Textile Technology, Department of Textile Engineering, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal.
| | - M Teresa P Amorim
- 2C2T, Centre for Science and Textile Technology, Department of Textile Engineering, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal
| |
Collapse
|
18
|
Sankaran-Walters S, Hart R, Dills C. Guardians of the Gut: Enteric Defensins. Front Microbiol 2017; 8:647. [PMID: 28469609 PMCID: PMC5395650 DOI: 10.3389/fmicb.2017.00647] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 03/29/2017] [Indexed: 01/01/2023] Open
Abstract
Enteric defensins likely play a key role in the management of the human microbiome throughout development. The functional and mechanistic diversity of defensins is much greater than was initially thought. Defensin expression and overall Paneth cell physiology likely plays a key role in the development of colitis and other inflammatory or dysbiotic diseases of the gut. As our understanding of enteric defensins grows, their potential as tools of clinical intervention becomes more apparent. In this review, we focus on the function and activity of Paneth Cell defensins and highlight their role in disease.
Collapse
|
19
|
Funahashi SI, Suzuki Y, Nakano K, Kawai S, Suzuki M. Generation and characterization of monoclonal antibodies against human LGR6. J Biochem 2017; 161:361-368. [PMID: 28013222 DOI: 10.1093/jb/mvw077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/20/2016] [Indexed: 02/05/2023] Open
Abstract
Leucine-rich repeat-containing G protein-coupled receptor 6 (LGR6) is a seven-pass transmembrane protein known to be a marker of stem cells in several organs. To deepen our understanding of the cell biology of LGR6-positive cells, including stem cells, we generated monoclonal antibodies (mAbs) against human LGR6. DNA immunization followed by whole-cell immunization with LGR6-expressing transfectants was performed to obtain mAbs that recognized the native form of LGR6. Hybridomas were screened by flow cytometry using LGR6-transfected cells. Because the molecules of LGR4, LGR5, and LGR6 are 50% homologous at the amino acid level, specificity of the mAbs was confirmed by transfectants expressing LGR4, LGR5, or LGR6. Three LGR6-specific mAbs were generated. Two of the three mAbs (designated 43A6 and 43D10) recognized the large N-terminal extracellular domain of LGR6, and competitively blocked the binding of R-spondin 1, which is known to be the ligand for LGR6. The other mAb, 43A25, recognized the seven-pass transmembrane domain of LGR6, and was able to be used for immunoblot analysis. In addition, mAbs 43A6 and 43D10 detected endogenous expression of LGR6 in cancer cell lines. We expect that our mAbs will contribute to widening our understanding of LGR6-positive cells in humans.
Collapse
Affiliation(s)
- Shin-Ichi Funahashi
- Forerunner Pharma Research Co., Ltd., Komaba Open Laboratory, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Yasunori Suzuki
- Forerunner Pharma Research Co., Ltd., Komaba Open Laboratory, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Kiyotaka Nakano
- Forerunner Pharma Research Co., Ltd., Komaba Open Laboratory, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Shigeto Kawai
- Forerunner Pharma Research Co., Ltd., Komaba Open Laboratory, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Masami Suzuki
- Forerunner Pharma Research Co., Ltd., Komaba Open Laboratory, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| |
Collapse
|
20
|
Houschyar KS, Momeni A, Pyles MN, Maan ZN, Whittam AJ, Siemers F. Wnt signaling induces epithelial differentiation during cutaneous wound healing. Organogenesis 2016; 11:95-104. [PMID: 26309090 DOI: 10.1080/15476278.2015.1086052] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Cutaneous wound repair in adult mammals typically does not regenerate original dermal architecture. Skin that has undergone repair following injury is not identical to intact uninjured skin. This disparity may be caused by differences in the mechanisms that regulate postnatal cutaneous wound repair compared to embryonic skin development and thus we seek a deeper understanding of the role that Wnt signaling plays in the mechanisms of skin repair in both fetal and adult wounds. The influence of secreted Wnt signaling proteins in tissue homeostasis has galvanized efforts to identify small molecules that target Wnt-mediated cellular responses. Wnt signaling is activated by wounding and participates in every subsequent stage of the healing process from the control of inflammation and programmed cell death, to the mobilization of stem cell reservoirs within the wound site. Endogenous Wnt signaling augmentation represents an attractive option to aid in the restoration of cutaneous wounds, as the complex mechanisms of the Wnt pathway have been increasingly investigated over the years. In this review, we summarize recent data elucidating the roles that Wnt signaling plays in cutaneous wound healing process.
Collapse
Affiliation(s)
- Khosrow S Houschyar
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA. ,b Clinic for Plastic and Reconstructive Surgery ; Bergmannstrost Halle , Germany
| | - Arash Momeni
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Malcolm N Pyles
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Zeshaan N Maan
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Alexander J Whittam
- a Division of Plastic and Reconstructive Surgery; Department of Surgery; Stanford School of Medicine ; Stanford , CA USA
| | - Frank Siemers
- b Clinic for Plastic and Reconstructive Surgery ; Bergmannstrost Halle , Germany
| |
Collapse
|
21
|
Smith AA, Li J, Liu B, Hunter D, Pyles M, Gillette M, Dhamdhere GR, Abo A, Oro A, Helms JA. Activating Hair Follicle Stem Cells via R-spondin2 to Stimulate Hair Growth. J Invest Dermatol 2016; 136:1549-1558. [DOI: 10.1016/j.jid.2016.01.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 12/23/2015] [Accepted: 01/18/2016] [Indexed: 12/31/2022]
|
22
|
Maiese K. Forkhead transcription factors: new considerations for alzheimer's disease and dementia. JOURNAL OF TRANSLATIONAL SCIENCE 2016; 2:241-247. [PMID: 27390624 PMCID: PMC4932907 DOI: 10.15761/jts.1000146] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Life expectancy of individuals in both developed and undeveloped nations continues to rise at an unprecedented rate. Coupled to this increase in longevity for individuals is the rise in the incidence of chronic neurodegenerative disorders that includes Alzheimer's disease (AD). Currently, almost ten percent of the population over the age of 65 suffers from AD, a disorder that is presently without definitive therapy to prevent the onset or progression of cognitive loss. Yet, it is estimated that AD will continue to significantly increase throughout the world to impact millions of individuals and foster the escalation of healthcare costs. One potential target for the development of novel strategies against AD and other cognitive disorders involves the mammalian forkhead transcription factors of the O class (FoxOs). FoxOs are present in "cognitive centers" of the brain to include the hippocampus, the amygdala, and the nucleus accumbens and may be required for memory formation and consolidation. FoxOs play a critical role in determining survival of multiple cell types in the nervous system, drive pathways of apoptosis and autophagy, and control stem cell proliferation and differentiation. FoxOs also interface with multiple cellular pathways that include growth factors, Wnt signaling, Wnt1 inducible signaling pathway protein 1 (WISP1), and silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1) that ultimately may control FoxOs and determine the fate and function of cells in the nervous system that control memory and cognition. Future work that can further elucidate the complex relationship FoxOs hold over cell fate and cognitive function could yield exciting prospects for the treatment of a number of neurodegenerative disorders including AD.
Collapse
Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, Newark, New Jersey 07101
| |
Collapse
|
23
|
Garcin CL, Ansell DM, Headon DJ, Paus R, Hardman MJ. Hair Follicle Bulge Stem Cells Appear Dispensable for the Acute Phase of Wound Re-epithelialization. Stem Cells 2016; 34:1377-85. [PMID: 26756547 PMCID: PMC4985639 DOI: 10.1002/stem.2289] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 12/01/2015] [Indexed: 11/09/2022]
Abstract
The cutaneous healing response has evolved to occur rapidly, in order to minimize infection and to re‐establish epithelial homeostasis. Rapid healing is achieved through complex coordination of multiple cell types, which importantly includes specific cell populations within the hair follicle (HF). Under physiological conditions, the epithelial compartments of HF and interfollicular epidermis remain discrete, with K15+ve bulge stem cells contributing progeny for HF reconstruction during the hair cycle and as a basis for hair shaft production during anagen. Only upon wounding do HF cells migrate from the follicle to contribute to the neo‐epidermis. However, the identity of the first‐responding cells, and in particular whether this process involves a direct contribution of K15+ve bulge cells to the early stage of epidermal wound repair remains unclear. Here we demonstrate that epidermal injury in murine skin does not induce bulge activation during early epidermal wound repair. Specifically, bulge cells of uninjured HFs neither proliferate nor appear to migrate out of the bulge niche upon epidermal wounding. In support of these observations, Diphtheria toxin‐mediated partial ablation of K15+ve bulge cells fails to delay wound healing. Our data suggest that bulge cells only respond to epidermal wounding during later stages of repair. We discuss that this response may have evolved as a protective safeguarding mechanism against bulge stem cell exhaust and tumorigenesis. Stem Cells2016;34:1377–1385
Collapse
Affiliation(s)
- Clare L Garcin
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom
| | - David M Ansell
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom.,Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom
| | - Denis J Headon
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | - Ralf Paus
- Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom.,Department of Dermatology, University of Münster, Münster, Germany
| | - Matthew J Hardman
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom
| |
Collapse
|
24
|
Transplantation of an LGR6+ Epithelial Stem Cell–Enriched Scaffold for Repair of Full-Thickness Soft-Tissue Defects. Plast Reconstr Surg 2016; 137:495-507. [DOI: 10.1097/01.prs.0000475761.09451.00] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
25
|
Ectodysplasin A Pathway Contributes to Human and Murine Skin Repair. J Invest Dermatol 2016; 136:1022-1030. [PMID: 26829034 PMCID: PMC4967474 DOI: 10.1016/j.jid.2015.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 09/08/2015] [Accepted: 09/22/2015] [Indexed: 12/27/2022]
Abstract
The highly conserved ectodysplasin A (EDA)/EDA receptor signaling pathway is critical during development for the formation of skin appendages. Mutations in genes encoding components of the EDA pathway disrupt normal appendage development, leading to the human disorder hypohidrotic ectodermal dysplasia. Spontaneous mutations in the murine Eda (Tabby) phenocopy human X-linked hypohidrotic ectodermal dysplasia. Little is known about the role of EDA signaling in adult skin homeostasis or repair. Because wound healing largely mimics the morphogenic events that occur during development, we propose a role for EDA signaling in adult wound repair. Here we report a pronounced delay in healing in Tabby mice, demonstrating a functional role for EDA signaling in adult skin. Moreover, pharmacological activation of the EDA pathway in both Tabby and wild-type mice significantly accelerates healing, influencing multiple processes including re-epithelialization and granulation tissue matrix deposition. Finally, we show that the healing promoting effects of EDA receptor activation are conserved in human skin repair. Thus, targeted manipulation of the EDA/EDA receptor pathway has clear therapeutic potential for the future treatment of human pathological wound healing.
Collapse
|
26
|
Skin Stem Cells: At the Frontier Between the Laboratory and Clinical Practice. Part 1: Epidermal Stem Cells. ACTAS DERMO-SIFILIOGRAFICAS 2015. [DOI: 10.1016/j.adengl.2015.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
27
|
Su Y, Liu H, Wang J, Lin B, Miao Y, Hu Z. Antimicrobial peptide lysozyme has the potential to promote mouse hair follicle growth in vitro. Acta Histochem 2015; 117:798-802. [PMID: 26257011 DOI: 10.1016/j.acthis.2015.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 07/22/2015] [Accepted: 07/27/2015] [Indexed: 01/12/2023]
Abstract
Lysozyme is a well-known antimicrobial peptide that exists widely in mammalian skin and it is also expressed by pilosebaceous units. However, the exact location of lysozyme in hair follicles and whether it exerts any direct effects on hair follicle growth are unclear. To determine whether lysozyme affected hair growth in vitro, micro-dissected mouse vibrissae follicles (VFs) were treated in serum-free organ culture for 3 days with lysozyme (1-10μg/ml). After that, the effects of lysozyme on dermal papilla (DP) cells were also investigated. Lysozyme was mainly identified in DP and dermal sheath regions of VF by immunochemistry. In addition, 5-10μg/ml lysozyme had a promoting effect on shaft production. It was also associated with significant proliferation of matrix keratinocytes by immunofluorescence observation. Furthermore, lysozyme promoted hair growth by increasing the levels of alkaline phosphatase and lymphoid enhancer factor 1 in DP, as determined by Western blotting. These results indicate that lysozyme is a promoter of VF growth via enhancing the hair-inductive capacity of DP cells during organ culture.
Collapse
Affiliation(s)
- Yongsheng Su
- Department of Burn and Plastic Surgery, The People's Hospital of Baoan Shenzhen Affiliated to Southern Medical University, Shenzhen, China
| | - Hui Liu
- Department of Burn and Plastic Surgery, The People's Hospital of Baoan Shenzhen Affiliated to Southern Medical University, Shenzhen, China
| | - Jin Wang
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Bojie Lin
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yong Miao
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Zhiqi Hu
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| |
Collapse
|
28
|
Maiese K. Stem cell guidance through the mechanistic target of rapamycin. World J Stem Cells 2015; 7:999-1009. [PMID: 26328016 PMCID: PMC4550632 DOI: 10.4252/wjsc.v7.i7.999] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 06/29/2015] [Accepted: 07/17/2015] [Indexed: 02/06/2023] Open
Abstract
Stem cells offer great promise for the treatment of multiple disorders throughout the body. Critical to this premise is the ability to govern stem cell pluripotency, proliferation, and differentiation. The mechanistic target of rapamycin (mTOR), 289-kDa serine/threonine protein kinase, that is a vital component of mTOR Complex 1 and mTOR Complex 2 represents a critical pathway for the oversight of stem cell maintenance. mTOR can control the programmed cell death pathways of autophagy and apoptosis that can yield variable outcomes in stem cell survival and be reliant upon proliferative pathways that include Wnt signaling, Wnt1 inducible signaling pathway protein 1 (WISP1), silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1), and trophic factors. mTOR also is a necessary component for the early development and establishment of stem cells as well as having a significant impact in the regulation of the maturation of specific cell phenotypes. Yet, as a proliferative agent, mTOR can not only foster cancer stem cell development and tumorigenesis, but also mediate cell senescence under certain conditions to limit invasive cancer growth. mTOR offers an exciting target for the oversight of stem cell therapies but requires careful consideration of the diverse clinical outcomes that can be fueled by mTOR signaling pathways.
Collapse
|
29
|
Pastushenko I, Prieto-Torres L, Gilaberte Y, Blanpain C. Skin Stem Cells: At the Frontier Between the Laboratory and Clinical Practice. Part 1: Epidermal Stem Cells. ACTAS DERMO-SIFILIOGRAFICAS 2015; 106:725-32. [PMID: 26189363 DOI: 10.1016/j.ad.2015.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 11/30/2022] Open
Abstract
Stem cells are characterized by their ability to self-renew and differentiate into the different cell lineages of their tissue of origin. The discovery of stem cells in adult tissues, together with the description of specific markers for their isolation, has opened up new lines of investigation, expanding the horizons of biomedical research and raising new hope in the treatment of many diseases. In this article, we review in detail the main characteristics of the stem cells that produce the specialized cells of the skin (epidermal, mesenchymal, and melanocyte stem cells) and their potential implications and applications in diseases affecting the skin. Part I deals with the principal characteristics and potential applications of epidermal stem cells in dermatology.
Collapse
Affiliation(s)
- I Pastushenko
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), Université Libre de Bruxelles (ULB), Bruselas, Bélgica.
| | - L Prieto-Torres
- Servicio de Dermatología, Hospital Clínico Lozano Blesa, Zaragoza, España
| | - Y Gilaberte
- Servicio de Dermatología, Hospital San Jorge, Huesca, España; Instituto Aragonés de Ciencias de la Salud, Zaragoza, España
| | - C Blanpain
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), Université Libre de Bruxelles (ULB), Bruselas, Bélgica; Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Université Libre de Bruxelles (ULB), Bruselas, Bélgica
| |
Collapse
|
30
|
The Use of Stem Cells in Burn Wound Healing: A Review. BIOMED RESEARCH INTERNATIONAL 2015; 2015:684084. [PMID: 26236731 PMCID: PMC4508388 DOI: 10.1155/2015/684084] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 01/15/2023]
Abstract
Burn wound healing involves a series of complex processes which are subject to intensive investigations to improve the outcomes, in particular, the healing time and the quality of the scar. Burn injuries, especially severe ones, are proving to have devastating effects on the affected patients. Stem cells have been recently applied in the field to promote superior healing of the wounds. Not only have stem cells been shown to promote better and faster healing of the burn wounds, but also they have decreased the inflammation levels with less scar progression and fibrosis. This review aims to highlight the beneficial therapeutic effect of stem cells in burn wound healing and to discuss the involved pathways and signaling molecules. The review covers various types of burn wound healing like skin and corneal burns, along with the alternative recent therapies being studied in the field of burn wound healing. The current reflection of the attitudes of people regarding the use of stem cells in burn wound healing is also stated.
Collapse
|
31
|
Maiese K. FoxO proteins in the nervous system. Anal Cell Pathol (Amst) 2015; 2015:569392. [PMID: 26171319 PMCID: PMC4478359 DOI: 10.1155/2015/569392] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 05/31/2015] [Indexed: 02/07/2023] Open
Abstract
Acute as well as chronic disorders of the nervous system lead to significant morbidity and mortality for millions of individuals globally. Given the ability to govern stem cell proliferation and differentiated cell survival, mammalian forkhead transcription factors of the forkhead box class O (FoxO) are increasingly being identified as potential targets for disorders of the nervous system, such as Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, and auditory neuronal disease. FoxO proteins are present throughout the body, but they are selectively expressed in the nervous system and have diverse biological functions. The forkhead O class transcription factors interface with an array of signal transduction pathways that include protein kinase B (Akt), serum- and glucocorticoid-inducible protein kinase (SgK), IκB kinase (IKK), silent mating type information regulation 2 homolog 1 (S. cerevisiae) (SIRT1), growth factors, and Wnt signaling that can determine the activity and integrity of FoxO proteins. Ultimately, there exists a complex interplay between FoxO proteins and their signal transduction pathways that can significantly impact programmed cell death pathways of apoptosis and autophagy as well as the development of clinical strategies for the treatment of neurodegenerative disorders.
Collapse
|
32
|
New Insights for Oxidative Stress and Diabetes Mellitus. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:875961. [PMID: 26064426 PMCID: PMC4443788 DOI: 10.1155/2015/875961] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 04/15/2015] [Indexed: 12/12/2022]
Abstract
The release of reactive oxygen species (ROS) and the generation of oxidative stress are considered critical factors for the pathogenesis of diabetes mellitus (DM), a disorder that is growing in prevalence and results in significant economic loss. New therapeutic directions that address the detrimental effects of oxidative stress may be especially warranted to develop effective care for the millions of individuals that currently suffer from DM. The mechanistic target of rapamycin (mTOR), silent mating type information regulation 2 homolog 1 (S. cerevisiae) (SIRT1), and Wnt1 inducible signaling pathway protein 1 (WISP1) are especially justified to be considered treatment targets for DM since these pathways can address the complex relationship between stem cells, trophic factors, impaired glucose tolerance, programmed cell death pathways of apoptosis and autophagy, tissue remodeling, cellular energy homeostasis, and vascular biology that greatly impact the biology and disease progression of DM. The translation and development of these pathways into viable therapies will require detailed understanding of their proliferative nature to maximize clinical efficacy and limit adverse effects that have the potential to lead to unintended consequences.
Collapse
|
33
|
Maiese K. Novel applications of trophic factors, Wnt and WISP for neuronal repair and regeneration in metabolic disease. Neural Regen Res 2015; 10:518-28. [PMID: 26170801 PMCID: PMC4424733 DOI: 10.4103/1673-5374.155427] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2015] [Indexed: 12/13/2022] Open
Abstract
Diabetes mellitus affects almost 350 million individuals throughout the globe resulting in significant morbidity and mortality. Of further concern is the growing population of individuals that remain undiagnosed but are susceptible to the detrimental outcomes of this disorder. Diabetes mellitus leads to multiple complications in the central and peripheral nervous systems that include cognitive impairment, retinal disease, neuropsychiatric disease, cerebral ischemia, and peripheral nerve degeneration. Although multiple strategies are being considered, novel targeting of trophic factors, Wnt signaling, Wnt1 inducible signaling pathway protein 1, and stem cell tissue regeneration are considered to be exciting prospects to overcome the cellular mechanisms that lead to neuronal injury in diabetes mellitus involving oxidative stress, apoptosis, and autophagy. Pathways that involve insulin-like growth factor-1, fibroblast growth factor, epidermal growth factor, and erythropoietin can govern glucose homeostasis and are intimately tied to Wnt signaling that involves Wnt1 and Wnt1 inducible signaling pathway protein 1 (CCN4) to foster control over stem cell proliferation, wound repair, cognitive decline, β-cell proliferation, vascular regeneration, and programmed cell death. Ultimately, cellular metabolism through Wnt signaling is driven by primary metabolic pathways of the mechanistic target of rapamycin and AMP activated protein kinase. These pathways offer precise biological control of cellular metabolism, but are exquisitely sensitive to the different components of Wnt signaling. As a result, unexpected clinical outcomes can ensue and therefore demand careful translation of the mechanisms that govern neural repair and regeneration in diabetes mellitus.
Collapse
Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, Newark, New Jersey 07101, USA
| |
Collapse
|
34
|
Wang W, Yang SF, Ren LH, Zhang XX, Yu SL. Effect of bifidobacterium on defensin-5 expression in intestinal injury of preweaning rats. World J Gastroenterol 2015; 21:2638-2644. [PMID: 25759531 PMCID: PMC4351213 DOI: 10.3748/wjg.v21.i9.2638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 12/08/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the protective effect of bifidobacterium in endotoxin-induced intestinal injury in preweaning rats.
METHODS: Preweaning rats were randomly divided into three groups (n = 40 for each): a control group (group C), a model group (group E) and a treatment group (group T). Both groups E and T were intraperitoneally injected with lipopolysaccharide (LPS) at a dose of 5 mg/kg (5 mg/L in normal saline), and group T was intragastrically administrated with bifidobacterium suspension (2.0 × 109 CFU/mL, 0.5 mL each time, twice a day, until the end of the experiment) 7 d before LPS administration. Group C was intraperitoneally injected with normal saline. After intraperitoneal injection and intragastric administration, the rats were placed back to the initial cage to receive breast feeding. The rats were killed at 2, 6, 12, 24 or 72 h, respectively, after endotoxin or physiological saline injection to collect serum and ileal tissue samples. Myeloperoxidase (MPO) contents in serum and ileum were detected at different times, and expression of ileal defensin-5 mRNA was evaluated by reverse transcription-polymerase chain reaction.
RESULTS: Serum and ileal MPO contents in group E were significantly higher than those in group C (serum contents: 107.50 ± 17.70 vs 157.14 ± 24.67, P < 0.05; ileal contents: 1.03 ± 0.21 vs 1.57 ± 0.33, P < 0.05), which peaked at 12 h and 6 h, respectively. MPO contents in group T were significantly lower than those in group E (serum contents: 114.38 ± 24.56 vs 145.25 ± 23.62, P < 0.05; ileal contents: 1.25 ± 0.24 vs 1.57 ± 0.33, P < 0.05). The expression of defensin-5 mRNA in group E was significantly higher than that in group C (0.953 ± 0.238 vs 0.631 ± 0.146, P < 0.05), which peaked at 2 h, and then decreased gradually. The expression of defensin-5 mRNA in group T was significantly lower than that in group E (0.487 ± 0.149 vs 0.758 ± 0.160, P < 0.05) apparently in 24 h. The expression of defensin-5 mRNA at 2 h in group T was significantly higher than that in group C (0.824 ± 0.158 vs 0.631 ± 0.146, P < 0.05).
CONCLUSION: MPO and defensin-5 mRNA increase in preweaning rats with LPS-induced intestinal injury. Bifidobacterium protects the gut by inhibiting MPO activity, not by increasing defensin-5 secretion.
Collapse
|
35
|
Maiese K. Programming apoptosis and autophagy with novel approaches for diabetes mellitus. Curr Neurovasc Res 2015; 12:173-88. [PMID: 25742566 PMCID: PMC4380829 DOI: 10.2174/1567202612666150305110929] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 02/16/2015] [Accepted: 02/19/2015] [Indexed: 12/13/2022]
Abstract
According to the World Health Organization, diabetes mellitus (DM) in the year 2030 will be ranked the seventh leading cause of death in the world. DM impacts all systems of the body with oxidant stress controlling cell fate through endoplasmic reticulum stress, mitochondrial dysfunction, alterations in uncoupling proteins, and the induction of apoptosis and autophagy. Multiple treatment approaches are being entertained for DM with Wnt1 inducible signaling pathway protein 1 (WISP1), mechanistic target of rapamycin (mTOR), and silent mating type information regulation 2 homolog) 1 (S. cerevisiae) (SIRT1) generating significant interest as target pathways that can address maintenance of glucose homeostasis as well as prevention of cellular pathology by controlling insulin resistance, stem cell proliferation, and the programmed cell death pathways of apoptosis and autophagy. WISP1, mTOR, and SIRT1 can rely upon similar pathways such as AMP activated protein kinase as well as govern cellular metabolism through cytokines such as EPO and oral hypoglycemics such as metformin. Yet, these pathways require precise biological control to exclude potentially detrimental clinical outcomes. Further elucidation of the ability to translate the roles of WISP1, mTOR, and SIRT1 into effective clinical avenues offers compelling prospects for new therapies against DM that can benefit hundreds of millions of individuals throughout the globe.
Collapse
Affiliation(s)
- Kenneth Maiese
- MD, Cellular and Molecular Signaling, Newark, New Jersey 07101, USA.
| |
Collapse
|