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Madaan A, Verma R, Singh AT, Jaggi M. Review of Hair Follicle Dermal Papilla cells as in vitro screening model for hair growth. Int J Cosmet Sci 2018; 40:429-450. [PMID: 30144361 DOI: 10.1111/ics.12489] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/20/2018] [Indexed: 12/15/2022]
Abstract
Hair disorders such as hair loss (alopecia) and androgen dependent, excessive hair growth (hirsutism, hypertrichosis) may impact the social and psychological well-being of an individual. Recent advances in understanding the biology of hair have accelerated the research and development of novel therapeutic and cosmetic hair growth agents. Preclinical models aid in dermocosmetic efficacy testing and claim substantiation of hair growth modulators. The in vitro models to investigate hair growth utilize the hair follicle Dermal Papilla cells (DPCs), specialized mesenchymal cells located at the base of hair follicle that play essential roles in hair follicular morphogenesis and postnatal hair growth cycles. In this review, we have compiled and discussed the extensively reported literature citing DPCs as in vitro model to study hair growth promoting and inhibitory effects. A variety of agents such as herbal and natural extracts, growth factors and cytokines, platelet-rich plasma, placental extract, stem cells and conditioned medium, peptides, hormones, lipid-nanocarrier, light, electrical and electromagnetic field stimulation, androgens and their analogs, stress-serum and chemotherapeutic agents etc. have been examined for their hair growth modulating effects in DPCs. Effects on DPCs' activity were determined from untreated (basal) or stress induced levels. Cell proliferation, apoptosis and secretion of growth factors were included as primary end-point markers. Effects on a wide range of biomolecules and mechanistic pathways that play key role in the biology of hair growth were also investigated. This consolidated and comprehensive review summarizes the up-to-date information and understanding regarding DPCs based screening models for hair growth and may be helpful for researchers to select the appropriate assay system and biomarkers. This review highlights the pivotal role of DPCs in the forefront of hair research as screening platforms by providing insights into mechanistic action at cellular level, which may further direct the development of novel hair growth modulators.
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Affiliation(s)
- Alka Madaan
- Cell Biology Lab, Dabur Research Foundation, 22, Site IV, Sahibabad, Ghaziabad, Uttar Pradesh, 201010, India
| | - Ritu Verma
- Cell Biology Lab, Dabur Research Foundation, 22, Site IV, Sahibabad, Ghaziabad, Uttar Pradesh, 201010, India
| | - Anu T Singh
- Cell Biology Lab, Dabur Research Foundation, 22, Site IV, Sahibabad, Ghaziabad, Uttar Pradesh, 201010, India
| | - Manu Jaggi
- Cell Biology Lab, Dabur Research Foundation, 22, Site IV, Sahibabad, Ghaziabad, Uttar Pradesh, 201010, India
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Transcutaneous implantation of valproic acid-encapsulated dissolving microneedles induces hair regrowth. Biomaterials 2018; 167:69-79. [PMID: 29554482 DOI: 10.1016/j.biomaterials.2018.03.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 03/01/2018] [Accepted: 03/12/2018] [Indexed: 01/05/2023]
Abstract
The interest in alternative material systems and delivery methods for treatment of androgenetic alopecia has been increasing in the recent decades. Topical application of valproic acid (VPA), an FDA-approved anticonvulsant drug, has been shown to effectively stimulate hair follicle (HF) regrowth by upregulating Wnt/β-catenin, a key pathway involved in initiation of HF development. Moreover, a majority of studies have suggested that cutaneous wound re-epithelialization is capable of inducing HF through Wnt/β-catenin pathway. Here, we report fabrication and evaluation of a novel VPA-encapsulating dissolving microneedle (DMN-VPA) that creates minimally invasive dermal micro-wounds upon application, significantly improving the VPA delivery efficiency. DMN-VPA not only delivers encapsulated VPA with higher accuracy than topical application, it also stimulates wound re-epithelialization signals involved in HF regrowth. Through a series of in vivo studies, we show that micro-wounding-mediated implantation of DMN-VPA upregulates expression of Wnt/β-catenin pathway, alkaline phosphatase, proliferating cell nuclear antigen, loricrin and HF stem cell markers, including keratin 15, and CD34 more effectively than topical application.
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Han L, Liu B, Chen X, Chen H, Deng W, Yang C, Ji B, Wan M. Activation of Wnt/β-catenin signaling is involved in hair growth-promoting effect of 655-nm red light and LED in in vitro culture model. Lasers Med Sci 2018; 33:637-645. [PMID: 29468283 DOI: 10.1007/s10103-018-2455-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/23/2018] [Indexed: 01/08/2023]
Abstract
Activation of the Wnt/β-catenin signaling pathway plays an important role in hair follicle morphogenesis and hair growth. Recently, low-level laser therapy (LLLT) was evaluated for stimulating hair growth in numerous clinical studies, in which 655-nm red light was found to be most effective and practical for stimulating hair growth. We evaluated whether 655-nm red light + light-emitting diode (LED) could promote human hair growth by activating Wnt/β-catenin signaling. An in vitro culture of human hair follicles (HFs) was irradiated with different intensities of 655-nm red light + LED, 21 h7 (an inhibitor of β-catenin), or both. Immunofluorescence staining was performed to assess the expression of β-catenin, GSK3β, p-GSK3β, and Lef1 in the Wnt/β-catenin signaling. The 655-nm red light + LED not only enhanced hair shaft elongation, but also reduced catagen transition in human hair follicle organ culture, with the greatest effectiveness observed at 5 min (0.839 J/cm2). Additionally, 655-nm red light + LED enhanced the expression of β-catenin, p-GSK3β, and Lef1, signaling molecules of the Wnt/β-catenin pathway, in the hair matrix. Activation of Wnt/β-catenin signaling is involved in hair growth-promoting effect of 655-nm red light and LED in vitro and therefore may serve as an alternative therapeutic option for alopecia.
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Affiliation(s)
- Le Han
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, China
| | - Ben Liu
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, China
| | - Xianyan Chen
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, China
| | - Haiyan Chen
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, China
| | - Wenjia Deng
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, China
| | - Changsheng Yang
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, No. 381 Wushan Road, Guangzhou, 510640, China
| | - Bin Ji
- Department of Hair Transplantation, Yuexiu Plastic Surgery Hospital, No.133 Guangzhou Road, Guangzhou, 510601, China
| | - Miaojian Wan
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, China.
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Michler JK, Hillmann A, Savkovic V, Mülling CKW. Horse hair follicles: A novel dermal stem cell source for equine regenerative medicine. Cytometry A 2017; 93:104-114. [DOI: 10.1002/cyto.a.23198] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/07/2017] [Accepted: 08/05/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Jule K. Michler
- Faculty of Veterinary Medicine; Institute of Anatomy, Histology and Embryology, Leipzig University, Leipzig, Germany
| | - Aline Hillmann
- Saxon Incubator for Clinical Translation; Leipzig University, Leipzig, Germany
| | - Vuk Savkovic
- Saxon Incubator for Clinical Translation; Leipzig University, Leipzig, Germany
| | - Christoph K. W. Mülling
- Faculty of Veterinary Medicine; Institute of Anatomy, Histology and Embryology, Leipzig University, Leipzig, Germany
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Chen J, Roop DR. Mimicking hair disorders by genetic manipulation of organ-cultured human hair follicles. J Invest Dermatol 2013; 132:2312-2314. [PMID: 22971919 DOI: 10.1038/jid.2012.243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human hair follicles can be dissected out of scalp skin and cultured in vitro in defined growth medium. Hair follicle organ cultures have previously been used to investigate the molecular and cellular mechanisms through which various factors regulate the maintenance and cycling of adult hair follicles. In this issue, Samuelov et al. transfected organ-cultured human hair follicles with siRNA nucleotides and suppressed the expression of the endogenous P-cadherin gene in follicular keratinocytes. Knocking down the expression of P-cadherin in hair follicles in vitro recapitulated the hair follicle phenotype observed in patients with hypotrichosis with juvenile macular dystrophy (HJMD) and enabled the authors to establish a cause-effect relationship between loss of P-cadherin and suppression of the canonical Wnt signaling pathway and upregulation of TGFβ2 during development of the hair abnormalities observed in HJMD patients.
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Affiliation(s)
- Jiang Chen
- Department of Dermatology and Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
| | - Dennis R Roop
- Department of Dermatology and Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Types of hair loss and treatment options, including the novel low-level light therapy and its proposed mechanism. South Med J 2010; 103:917-21. [PMID: 20689478 DOI: 10.1097/smj.0b013e3181ebcf71] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Androgenetic alopecia (AGA) is the most common form of hair loss in men, and female pattern hair loss (FPHL) is the most common form of hair loss in women. Traditional methods of treating hair loss have included minoxidil, finasteride, and surgical transplantation. Currently there is a myriad of new and experimental treatments. In addition, low-level light therapy (LLLT) has recently been approved by the United States Food and Drug Administration (FDA) for the treatment of hair loss. There are several theories and minimal clinical evidence of the safety and efficacy of LLLT, although most experts agree that it is safe. More in vitro studies are necessary to elucidate the mechanism and effectiveness at the cellular level, and more controlled studies are necessary to assess the role of this new treatment in the general population.
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Al-Nuaimi Y, Baier G, Watson REB, Chuong CM, Paus R. The cycling hair follicle as an ideal systems biology research model. Exp Dermatol 2010; 19:707-13. [PMID: 20590819 PMCID: PMC4383261 DOI: 10.1111/j.1600-0625.2010.01114.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the postgenomic era, systems biology has rapidly emerged as an exciting field predicted to enhance the molecular understanding of complex biological systems by the use of quantitative experimental and mathematical approaches. Systems biology studies how the components of a biological system (e.g. genes, transcripts, proteins, metabolites) interact to bring about defined biological function or dysfunction. Living systems may be divided into five dimensions of complexity: (i) molecular; (ii) structural; (iii) temporal; (iv) abstraction and emergence; and (v) algorithmic. Understanding the details of these dimensions in living systems is the challenge that systems biology aims to address. Here, we argue that the hair follicle (HF), one of the signature features of mammals, is a perfect and clinically relevant model for systems biology research. The HF represents a stem cell-rich, essentially autonomous mini-organ, whose cyclic transformations follow a hypothetical intrafollicular "hair cycle clock" (HCC). This prototypic neuroectodermal-mesodermal interaction system, at the cross-roads of systems and chronobiology, encompasses various levels of complexity as it is subject to both intrafollicular and extrafollicular inputs (e.g. intracutaneous timing mechanisms with neural and systemic stimuli). Exploring how the cycling HF addresses the five dimensions of living systems, we argue that a systems biology approach to the study of hair growth and cycling, in man and mice, has great translational medicine potential. Namely, the easily accessible human HF invites preclinical and clinical testing of novel hypotheses generated with this approach.
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Affiliation(s)
- Yusur Al-Nuaimi
- Doctoral Training Centre in Integrative Systems Biology, Manchester Interdisciplinary Biocentre, University of Manchester, Manchester, UK
- Epithelial Sciences, School of Translational Medicine, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Gerold Baier
- Doctoral Training Centre in Integrative Systems Biology, Manchester Interdisciplinary Biocentre, University of Manchester, Manchester, UK
| | - Rachel E. B. Watson
- Epithelial Sciences, School of Translational Medicine, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, USA
| | - Ralf Paus
- Epithelial Sciences, School of Translational Medicine, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
- Department of Dermatology, University of Lübeck, Lübeck, Germany
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van Egmond S, Hoedemaker C, Sinclair R. Short anagen hair naevus: improvement after treatment with 5% topical minoxidil. Int J Dermatol 2007; 46:757-9. [PMID: 17614811 DOI: 10.1111/j.1365-4632.2007.03276.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sylvia van Egmond
- University of Melbourne, Department of Medicine (Dermatology), St Vincent's Hospital, Australia
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