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hair follicle stem cell

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https://www.readbyqxmd.com/read/29227728/use-of-low-level-laser-therapy-in-treatment-of-the-androgenic-alopecia-the-first-systematic-review
#1
Ibrahim Najem, Hongxiang Chen
Alopecia is a common disease affecting more than half of the world total number of people. Alopecia exists in different types, but one of the most common of these types is the Androgenic Alopecia which has affected approximately 51% of the total number of males ranging between the age bracket of 40 years and 75 years. This type of alopecia is more common in females who are above the age of 65 years and above. Despite this widespread effect, much has not been done regarding identifying the possible drugs for treating this disease...
December 11, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/29204389/platelet-rich-plasma-by-single-spin-process-in-male-pattern-androgenetic-alopecia-is-it-an-effective-treatment
#2
Azin Ayatollahi, Hamed Hosseini, Majid Shahdi, Saman AhmadNasrollahi, Mansour NassiriKashani, Somaye Yadangi, Farid H Firooz, Alireza Firooz
Introduction and Objective: Platelet-rich plasma (PRP) is an autologous preparation of platelets in concentrated plasma. The platelet is a natural source of different growth factors and cytokines. These growth factors act on stem cells in the bulge area of the follicles and stimulate the development of new follicles, and promote neovascularization. The aim of this study was to investigate the efficacy and safety of PRP injections in androgenetic alopecia (AGA) in men. Patients and Methods: Fifteen male patients (mean age: 39 ± 9...
November 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29201190/pigment-epithelium-derived-factor-short-peptides-facilitate-full-thickness-cutaneous-wound-healing-by-promoting-epithelial-basal-cell-and-hair-follicle-stem-cell-proliferation
#3
Shawn H Tsai, Li-Pen Tsao, Shih-Hsin Chang, Tsung-Chuan Ho, Kwang-Yi Tung, Ai-Ching Wu, Yeou-Ping Tsao
A previous study by our group showed that a 44-amino-acid fragment of pigment epithelium-derived factor (PEDF) facilitated corneal epithelial wound healing. In the present study this fragment was shortened to obtain peptides of 18, 20 and 29 amino acids in length, and their promoting effects on the healing of full-thickness skin wounds were assessed. Peptides were delivered periodically by topical application to punch wounds of mice. The wound healing speed was evaluated by measuring the reduction of wound areas at 4 and 7 days after injury...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29199946/stimulation-of-hair-follicle-stem-cell-proliferation-through-an-il-1-dependent-activation-of-%C3%AE-%C3%AE-t-cells
#4
Pedro Lee, Rupali Gund, Abhik Dutta, Neha Pincha, Isha Rana, Subhasri Ghosh, Deborah Witherden, Eve Kandyba, Amanda MacLeod, Krzysztof Kobielak, Wendy L Havran, Colin Jamora
The cutaneous wound-healing program is a product of a complex interplay among diverse cell types within the skin. One fundamental process that is mediated by these reciprocal interactions is the mobilization of local stem cell pools to promote tissue regeneration and repair. Using the ablation of epidermal caspase-8 as a model of wound healing in Mus musculus, we analyzed the signaling components responsible for epithelial stem cell proliferation. We found that IL-1α and IL-7 secreted from keratinocytes work in tandem to expand the activated population of resident epidermal γδT-cells...
December 4, 2017: ELife
https://www.readbyqxmd.com/read/29190822/the-tumor-suppressor-phosphatase-pp2a-b56%C3%AE-regulates-stemness-and-promotes-the-initiation-of-malignancies-in-a-novel-murine-model
#5
Mahnaz Janghorban, Ellen M Langer, Xiaoyan Wang, Derek Zachman, Colin J Daniel, Jody Hooper, William H Fleming, Anupriya Agarwal, Rosalie C Sears
Protein phosphatase 2A (PP2A) is a ubiquitously expressed Serine-Threonine phosphatase mediating 30-50% of protein phosphatase activity. PP2A functions as a heterotrimeric complex, with the B subunits directing target specificity to regulate the activity of many key pathways that control cellular phenotypes. PP2A-B56α has been shown to play a tumor suppressor role and to negatively control c-MYC stability and activity. Loss of B56α promotes cellular transformation, likely at least in part through its regulation of c-MYC...
2017: PloS One
https://www.readbyqxmd.com/read/29181098/characterization-of-hair-follicle-side-population-cells-in-mouse-epidermis-and-skin-tumors
#6
Sun Hye Kim, Christopher Sistrunk, Paula L Miliani de Marval, Marcelo L Rodriguez-Puebla
A subset of cells, termed side-population (SP), which have the ability to efflux Hoeschst 33342, have previously been demonstrated to act as a potential method to isolate stem cells. Numerous stem/progenitor cells have been localized in different regions of the mouse hair follicle (HF). The present study identified a SP in the mouse HF expressing the ABCG2 transporter and MTS24 surface marker. These cells are restricted to the upper isthmus of the HF and have previously been described as progenitor cells. Consistent with their SP characteristic, they demonstrated elevated expression of ABCG2 transporter, which participates in the dye efflux...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29138430/extracellular-vesicles-derived-from-mscs-activates-dermal-papilla-cell-in-vitro-and-promotes-hair-follicle-conversion-from-telogen-to-anagen-in-mice
#7
Ramya Lakshmi Rajendran, Prakash Gangadaran, Soon Sun Bak, Ji Min Oh, Senthilkumar Kalimuthu, Ho Won Lee, Se Hwan Baek, Liya Zhu, Young Kwan Sung, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Hair loss is a common medical problem. In this study, we investigated the proliferation, migration, and growth factor expression of human dermal papilla (DP) cells in the presence or absence of treatment with mesenchymal stem cell extracellular vesicles (MSC-EVs). In addition, we tested the efficacy of MSC-EV treatment on hair growth in an animal model. MSC-EV treatment increased DP cell proliferation and migration, and elevated the levels of Bcl-2, phosphorylated Akt and ERK. In addition; DP cells treated with MSC-EVs displayed increased expression and secretion of VEGF and IGF-1...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29123134/divergent-proliferation-patterns-of-distinct-human-hair-follicle-epithelial-progenitor-niches-in-situ-and-their-differential-responsiveness-to-prostaglandin-d2
#8
Talveen S Purba, Michael Peake, Bessam Farjo, Nilofer Farjo, Ranjit K Bhogal, Gail Jenkins, Ralf Paus
Human scalp hair follicles (hHF) harbour several epithelial stem (eHFSC) and progenitor cell sub-populations organised into spatially distinct niches. However, the constitutive cell cycle activity of these niches remains to be characterized in situ. Therefore, the current study has studied these characteristics of keratin 15+ (K15), CD200+ or CD34+ cells within anagen VI hHFs by immunohistomorphometry, using Ki-67 and 5-ethynyl-2'-deoxyuridine (EdU). We quantitatively demonstrate in situ the relative cell cycle inactivity of the CD200+/K15+ bulge compared to other non-bulge CD34+ and K15+ progenitor compartments and found that in each recognized eHFSC/progenitor niche, proliferation associates negatively with eHFSC-marker expression...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29115537/lncrna-plncrna%C3%A2-1-regulates-proliferation-and-differentiation-of-hair-follicle-stem-cells-through-tgf%C3%A2-%C3%AE-1%C3%A2-mediated-wnt-%C3%AE-%C3%A2-catenin-signal-pathway
#9
Yuan Si, Jingzhu Bai, Jiang Wu, Qun Li, You Mo, Ruihua Fang, Wei Lai
The present study demonstrated that hair follicle stem cells (HFSc) have multidirectional differentiation potential and participate in skin wound healing processes. Long non‑coding RNAs (lncRNAs) are defined as non‑protein coding transcripts longer than 200 nucleotides, which are important in the proliferation and differentiation of cells. The purpose of the present study was to investigate the role of PlncRNA‑1 in the proliferation and differentiation of HFSc. Results revealed that PlncRNA‑1, transforming growth factor (TGF)‑β1, Wnt and β‑catenin expression levels were significantly downregulated in HFSc...
November 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29106930/topical-inhibition-of-the-electron-transport-chain-can-stimulate-the-hair-cycle
#10
M Miranda, H Christofk, D L Jones, W E Lowry
While many signaling pathways have been implicated in control of activation of adult hair follicle stem cells and the hair cycle, less is known about cell intrinsic mechanisms of stem cell control. We previously identified lactate production as a key cell intrinsic regulator of hair follicle stem cell activity, suggesting that cellular metabolism is important in stem cell activation. Others have used transgenic methods to suggest that transgenic blockade of the Electron Transport Chain (ETC) leads to degeneration of the hair follicle...
October 26, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29106928/epithelial-mesenchymal-stem-cell-transition-in-a-human-organ-lessons-from-lichen-planopilaris
#11
H Imanishi, D M Ansell, J Chéret, M Harries, M Bertolini, N Sepp, T Bíró, E Poblet, F Jimenez, J Hardman, S Parameswara Panicker, C M Ward, R Paus
Epithelial-to-mesenchymal transition (EMT) is critical for embryonic development and wound healing, and occurs in fibrotic disease and carcinoma. Here, we show that EMT also occurs within the bulge, the epithelial stem cell (eSC) niche of human scalp hair follicles (HFs), during the inflammatory permanent alopecia, lichen planopilaris (LPP). We show that a molecular EMT signature can be experimentally induced in healthy human eSCs in situ by antagonizing E-cadherin, combined with TGF-ß1, EGF, and interferon-γ administration, which to our knowledge is previously unreported...
October 26, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29104609/a-discrete-transition-zone-between-cuticle-and-cortex-layers-of-a-human-hair-fibre-changes-observed-in-the-presence-of-breast-cancer
#12
Donald Lyman, Paula Gerstmann
Attenuated total reflection Fourier transform infrared (ATR-FT-IR) spectroscopy of hair fibres shows a discrete transition zone (DTZ) between the hard protective cuticle layer and the softer elongated cortical cells of the cortex. The DTZ is composed of flattened orthocortical cells located on the outer perimeter of the cortex and appears to range in thickness between 2 and 3.6 μm. The inner surface of the DTZ, adjacent to the elongated cortical cells that make up the core of the hair fibre, is irregular. ATR-FT-IR analyses of these flattened orthocortical cells indicate major changes in the molecular structure of keratins found in this transition zone...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/29084289/neuronal-differentiation-of-hair-follicle-bulge-derived-stem-cells-co-cultured-with-mouse-cochlear-modiolus-explants
#13
Timo Schomann, Laura Mezzanotte, John C M J De Groot, Marcelo N Rivolta, Sanne H Hendriks, Johan H M Frijns, Margriet A Huisman
Stem-cell-based repair of auditory neurons may represent an attractive therapeutic option to restore sensorineural hearing loss. Hair-follicle-bulge-derived stem cells (HFBSCs) are promising candidates for this type of therapy, because they (1) have migratory properties, enabling migration after transplantation, (2) can differentiate into sensory neurons and glial cells, and (3) can easily be harvested in relatively high numbers. However, HFBSCs have never been used for this purpose. We hypothesized that HFBSCs can be used for cell-based repair of the auditory nerve and we have examined their migration and incorporation into cochlear modiolus explants and their subsequent differentiation...
2017: PloS One
https://www.readbyqxmd.com/read/29079536/restoration-of-skin-pigmentation-after-deep-partial-or-full-thickness-burn-injury
#14
Niann-Tzyy Dai, Hsin-I Chang, Yi-Wen Wang, Keng-Yen Fu, Tai-Chun Huang, Nien-Chi Huang, Jhen-Kai Li, Pai-Shan Hsieh, Lien-Guo Dai, Chao-Kuei Hsu, Peter K Maitz
Significant skin pigmentation changes occur when patients suffer deep burn injuries. These pigmentation disorders may cause not only cosmetic and psychological issues, but more importantly it increases the risk of skin cancer or photoaging. Severe burns significantly effect on the process of repigmentation as the pigmentation is tightly regulated by cell proliferation and differentiation of melanocytes and melanocyte stem cells which are housing in the epidermis and hair follicles of the skin. In the present review, we discuss the possible mechanisms to replenish the melanocytes from the healthy epidermis and hair follicles surrounding burn wounds...
October 24, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29065140/novel-insights-into-the-pathways-regulating-the-canine-hair-cycle-and-their-deregulation-in-alopecia-x
#15
Magdalena A T Brunner, Vidhya Jagannathan, Dominik P Waluk, Petra Roosje, Monika Linek, Lucia Panakova, Tosso Leeb, Dominique J Wiener, Monika M Welle
Alopecia X is a hair cycle arrest disorder in Pomeranians. Histologically, kenogen and telogen hair follicles predominate, whereas anagen follicles are sparse. The induction of anagen relies on the activation of hair follicle stem cells and their subsequent proliferation and differentiation. Stem cell function depends on finely tuned interactions of signaling molecules and transcription factors, which are not well defined in dogs. We performed transcriptome profiling on skin biopsies to analyze altered molecular pathways in alopecia X...
2017: PloS One
https://www.readbyqxmd.com/read/29061525/characterization-of-a-new-inducible-transgenic-mouse-model-with-gfp-expression-in-melanocytes-and-their-precursors
#16
Sandeep S Joshi, Bishal Tandukar, Maira Castaneda, Shunlin Jiang, Ganesh Diwakar, Ronna P Hertzano, Thomas J Hornyak
Melanocytes are neural crest-derived cells that are responsible for mammalian hair follicle (HF) pigmentation. The Dct-LacZ transgenic mouse is extensively used to study melanocyte biology but lacks conditionally-inducible labelling and fluorescent labelling, enabling specific, viable isolation of melanocytes using fluorescence-activated cell sorting (FACS). Here, we have generated a Tet-off bitransgenic mouse model, Dct-H2BGFP, containing Dct-tTA and TRE-H2BGFP transgenes. Characterization of Dct-H2BGFP mice confirmed a pattern of Dct-H2BGFP expression in melanoblasts, melanocyte stem cells (McSCs), and terminally differentiated melanocytes similar to the expression pattern of previously published mouse models Dct-LacZ and iDct-GFP...
October 21, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29056331/alkaline-ceramidase-1-protects-mice-from-premature-hair-loss-by-maintaining-the-homeostasis-of-hair-follicle-stem-cells
#17
Chih-Li Lin, Ruijuan Xu, Jae Kyo Yi, Fang Li, Jiang Chen, Evan C Jones, Jordan B Slutsky, Liqun Huang, Basil Rigas, Jian Cao, Xiaoming Zhong, Ashley J Snider, Lina M Obeid, Yusuf A Hannun, Cungui Mao
Ceramides and their metabolites are important for the homeostasis of the epidermis, but much remains unknown about the roles of specific pathways of ceramide metabolism in skin biology. With a mouse model deficient in the alkaline ceramidase (Acer1) gene, we demonstrate that ACER1 plays a key role in the homeostasis of the epidermis and its appendages by controlling the metabolism of ceramides. Loss of Acer1 elevated the levels of various ceramides and sphingoid bases in the skin and caused progressive hair loss in mice...
November 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/29055410/getting-to-the-core-of-the-dermal%C3%A2-papilla
#18
Mingxing Lei, Li Yang, Cheng-Ming Chuong
Through coordinated and reciprocal interactions between the epithelium and mesenchyme, diverse integumentary organs form and undergo cyclic renewal. The hair follicle has become the main model to understand this extraordinary regenerative behavior. At the core is the dermal papilla, the organizing center, and the epithelial stem cells that respond to dermal papilla signaling. Two recent papers by Telerman et al. and Yang et al. unravel new molecular landscapes within the dermal papilla.
November 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29055061/preservation-of-stem-cells-in-androgenetic-alopecia
#19
Hend Gamil, Magda Assaf, Manal Elsayed, Khaled Gharib, Mohamed Soliman, Naglaa A Mostafa
Androgenetic alopecia is characterized by progressive, patterned hair loss from the scalp that occurs in both men and women. Suggested that genetically predisposed hair follicles are target for androgen-stimulated follicle miniaturization, with gradual replacement of terminal hairs by vellus hairs. We aimed at evaluating the expression of stem and progenitor cell markers using IHC in scalp biopsies from affected and unaffected areas of patients with AGA. This article is protected by copyright. All rights reserved...
October 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29054607/repigmentation-of-human-vitiligo-skin-by-nbuvb-is-controlled-by-transcription-of-gli1-and-activation-of-%C3%AE-catenin-pathway-in-the-hair-follicle-bulge-stem-cells
#20
Nathaniel B Goldstein, Maranke I Koster, Kenneth L Jones, Bifeng Gao, Laura G Hoaglin, Steven E Robinson, Michael J Wright, Smaranda I Birlea, Abigail Luman, Karoline A Lambert, Yiqun G Shellman, Mayumi Fujita, William A Robinson, Dennis R Roop, David A Norris, Stanca A Birlea
Vitiligo repigmentation is a complex process in which the melanocyte-depleted interfollicular epidermis (IE) is repopulated by melanocyte precursors from hair follicle (HF) bulge that proliferate, migrate, and differentiate into mature melanocytes on their way to the epidermis. The strongest stimulus for vitiligo repigmentation is narrow band UVB (NBUVB), but how the HF melanocyte precursors are activated by UV light has not been extensively studied. To better understand this process, we developed an application that combined laser capture microdissection and subsequent whole transcriptome RNA sequencing of HF bulge melanocyte precursors, and compared their gene signature to that of regenerated mature epidermal melanocytes from the NBUVB-treated vitiligo skin...
October 17, 2017: Journal of Investigative Dermatology
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