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hair follicle stem cell

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https://www.readbyqxmd.com/read/28702144/establishment-of-human-hair-follicle-mesenchymal-stem-cells-with-overexpressed-human-hepatocyte-growth-factor
#1
Dan Zhou, Hongjing Cheng, Jinyu Liu, Lei Zhang
OBJECTIVES: Chronic liver disease has become a major health problem that causes serious damage to human health. Since the existing treatment effect was not ideal, we need to seek new treatment methods. MATERIALS AND METHODS: We utilized the gene recombination technology to obtain the human hair mesenchymal stem cells which overexpression of human hepatocyte growth factor (hHGF). Furthermore, we verified the property of transfected cells through detecting surface marker by flow cytometry...
June 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28699278/regulatory-t-cells-in-skin
#2
REVIEW
Niwa Ali, Michael D Rosenblum
Foxp3+ CD4+ Regulatory T cells (Tregs) are a subset of immune cells that function to regulate tissue inflammation. Skin is one of the largest organs and is home to a large proportion of the body's Tregs. However, relative to other tissues (such as the spleen and gastrointestinal tract) the function of Tregs in skin is less well defined. Here, we review our understanding of how Tregs migrate to skin and the cellular and molecular pathways required for their maintenance in this tissue. In addition, we outline what is known about the specialized functions of Tregs in skin...
July 12, 2017: Immunology
https://www.readbyqxmd.com/read/28687932/spatial-and-temporal-expression-of-sox9-during-murine-incisor-development
#3
Zhi-Cheng Yang, Dan Li, Shuang Feng, Xiao-Dong Sui, Zhi Chen, Li Zhang
Mouse incisors are capable of continuously growing due to the renewal of dental epithelium stem cells and mesenchymal stem cells residing at the proximal ends. The transcription factor Sox9 plays important roles in maintaining the stem cells of hair follicles, retinal progenitor cells and neural crest stem cells. Whether Sox9 is involved during mouse incisor development is not reported yet. In this study, we examined the expression pattern of Sox9 during mouse incisor development by in situ hybridization and immunohistochemistry...
August 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28680144/transplanted-adipose-derived-stem-cells-can-be-short-lived-yet-accelerate-healing-of-acid-burn-skin-wounds-a-multimodal-imaging-study
#4
Ghulam Muhammad, Jiadi Xu, Jeff W M Bulte, Anna Jablonska, Piotr Walczak, Miroslaw Janowski
The incidence of accidental and intentional acid skin burns is rising. Current treatment strategies are mostly inadequate, leaving victims disfigured and without treatment options. Here, we have shown that transplantation of adipose-derived stem cells (ASCs) accelerates the process of acid burn wound-healing. Pre-conditioning of ASCs using ascorbic acid (AA) or hypoxic conditions provided additional benefit. While the wounds were ultimately healed in all mice, histological analysis revealed that, in non-transplanted animals, the number of hair follicles was reduced...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28672930/isolation-and-characterization-of-in-vitro-culture-of-hair-follicle-cells-differentiated-from-umbilical-cord-blood-mesenchymal-stem-cells
#5
Zhang-Yu Bu, Li-Min Wu, Xiao-Hong Yu, Jian-Bo Zhong, Ping Yang, Jian Chen
The present investigation explored the in vitro culture, isolation and characterization of hair follicle cell differentiation from umbilical cord blood mesenchymal stem cells (MSCs). Flow cytometry was used to obtain MSCs from the isolation and purification of human umbilical cord blood MSCs. Culture suspension of hair follicle organ was centrifuged and the supernatant used in the culture medium of MSCs, and the entire process of induced differentiation was recorded by photomicroscopy. The expression level of surface marker CK15 of hair follicle cells obtained from induced differentiation was detected with immunofluorescence...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28670819/emerging-roles-of-transit-amplifying-cells-in-tissue-regeneration-and-cancer
#6
REVIEW
Bing Zhang, Ya-Chieh Hsu
Most regenerative tissues employ transit-amplifying cells (TACs) that are positioned in between stem cells and differentiated progeny. In a classical hierarchical model, stem cells undergo limited divisions to produce TACs, which then proliferate rapidly to expand the system and produce diverse differentiated cell types. Although TACs are indispensable for generating tissues, they have been largely viewed as a transit point between stem cells and downstream lineages. Studies in the past few years, however, have revealed some fascinating biology and unanticipated functions of TACs...
July 3, 2017: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/28670518/hair-follicle-generation-by-injections-of-adult-human-follicular-epithelial-and-dermal-papilla-cells-into-nude-mice
#7
Mohammadali Nilforoushzadeh, Elham Rahimi Jameh, Fariba Jaffary, Ehsan Abolhasani, Gelavizh Keshtmand, Hajar Zarkob, Parvaneh Mohammadi, Nasser Aghdami
OBJECTIVE: Dermal papilla and hair epithelial stem cells regulate hair formation and the growth cycle. Damage to or loss of these cells can cause hair loss. Although several studies claim to reconstitute hairs using rodent cells in an animal model, additional research is needed to develop a stable human hair follicle reconstitution protocol. In this study, we have evaluated hair induction by injecting adult cultured human dermal papilla cells and a mixture of hair epithelial and dermal papilla cells in a mouse model...
July 2017: Cell Journal
https://www.readbyqxmd.com/read/28647027/targeting-of-stem-cell-niches-using-unconventional-genetic-tools
#8
Vasily V Shinin, Andrey A Panteleyev
Maintenance of hair follicle (HF) stem cell quiescence and self-renewal are key functions of a specific cellular niche represented by the HF bulge and adjacent cell populations. The unique context of this niche is crucial for normal HF functioning, but mechanisms implicated in its maintenance are still not quite clear. The Letter to the Editor by Sada et al. introduces a novel Slc1a3-CreER genetic mouse model which, in contrast to previously reported marking tools, selectively and highly efficiently demarcates the telogen bulge inner layer, one of the critical structural components of the bulge stem cell niche...
July 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28636968/t-regulating-hair-follicle-stem-cells
#9
Maria Maryanovich, Paul S Frenette
Regulatory T (Treg) cells are well known to modulate inflammatory responses. In a recent issue of Cell, Ali et al. (2017) reveal a function for Treg cells in stem cell maintenance by showing that skin-resident Foxp3(+) Treg cells preferentially localize to the hair follicle stem cell (HFSC) niche to control HFSC-mediated hair regeneration.
June 20, 2017: Immunity
https://www.readbyqxmd.com/read/28630424/characterization-of-slow-cycling-corneal-limbal-epithelial-cells-identifies-putative-stem-cell-markers
#10
R Sartaj, C Zhang, P Wan, Z Pasha, V Guaiquil, A Liu, J Liu, Y Luo, E Fuchs, M I Rosenblatt
In order to identify reliable markers of corneal epithelial stem cells, we employed an inducible transgenic "pulse-chase" murine model (K5Tta × TRE-H2BGFP) to localize, purify, and characterize slow cycling cells in the cornea. The retention of GFP labeling in slowly dividing cells allowed for localization of these cells to the corneal limbus and their subsequent purification by FACS. Transcriptome analysis from slow cycling cells identified differentially expressed genes when comparing to GFP(-) faster-dividing cells...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28627318/effects-of-gamma-rays-on-the-regeneration-of-murine-hair-follicles-in-the-natural-hair-cycle
#11
Kimihiko Sugaya
PURPOSE: This review evaluates the effects of γ-rays on the regeneration of murine hair follicles in the natural hair cycle. A series of studies were performed to investigate this issue, in which the whole bodies of C57BL/10JHir mice in the 1st telogen phase of the hair cycle were irradiated with γ-rays. RESULTS: The dermis of the irradiated skin showed a decrease in hair follicle density and induction of curved hair follicles along with the presence of white hairs and hypopigmented hair bulbs in the 2nd and 3rd anagen phases...
July 7, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28602615/pten-mediates-activation-of-core-clock-protein-bmal1-and-accumulation-of-epidermal-stem-cells
#12
Chiara Zagni, Luciana O Almeida, Tarek Balan, Marco T Martins, Luciana K Rosselli-Murai, Petros Papagerakis, Rogerio M Castilho, Cristiane H Squarize
Tissue integrity requires constant maintenance of a quiescent, yet responsive, population of stem cells. In the skin, hair follicle stem cells (HFSCs) that reside within the bulge maintain tissue homeostasis in response to activating cues that occur with each new hair cycle or upon injury. We found that PTEN, a major regulator of the PI3K-AKT pathway, controlled HFSC number and size in the bulge and maintained genomically stable pluripotent cells. This regulatory function is central for HFSC quiescence, where PTEN-deficiency phenotype is in part regulated by BMAL1...
July 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28595997/hpv8-field-cancerization-in-a-transgenic-mouse-model-is-due-to-lrig1-keratinocyte-stem-cell-expansion
#13
Simone Lanfredini, Carlotta Olivero, Cinzia Borgogna, Federica Calati, Kathryn Powell, Kelli-Jo Davies, Marco De Andrea, Sarah Harries, Hiu Kwan Carolyn Tang, Herbert Pfister, Marisa Gariglio, Girish K Patel
β-HPV cause near ubiquitous latent skin infection within long-lived hair follicle keratinocyte stem cells (HF KSC). In patients with epidermodysplasia verruciformis (EV), β-HPV viral replication is associated with skin keratosis and cutaneous squamous cell carcinoma (SCC). To determine the role of HF KSC in β-HPV induced skin carcinogenesis, we utilized a transgenic mouse model in which the keratin 14 promoter drives expression of the entire HPV8 early region (HPV8tg). HPV8tg mice developed thicker skin in comparison to wild type littermates consistent with a hyperproliferative epidermis...
June 5, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28593683/aging-in-hair-follicle-stem-cells-and-niche-microenvironment
#14
REVIEW
Jiang Ji, Bryan Siu-Yin Ho, Ge Qian, Xiao-Ming Xie, Paul Lorenz Bigliardi, Mei Bigliardi-Qi
Hair graying and hair loss are prominent and common characteristics of the elderly population. In some individuals these processes can significantly impact their quality of life, leading to depression, anxiety and other serious mental health problems. Accordingly, there has been much interest in understanding the complex physiological changes within the hair follicle in the aging individual. It is now known that hair follicles represent a prototypical stem cell niche, where both micro- and macroenvironmental influences are integrated alongside stem cell-stem cell and stem cell-stem niche interactions to determine hair growth or hair follicle senescence...
June 8, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28592171/next-generation-human-skin-constructs-as-advanced-tools-for-drug-development
#15
H E Abaci, Zongyou Guo, Yanne Doucet, Joanna Jacków, Angela Christiano
Many diseases, as well as side effects of drugs, manifest themselves through skin symptoms. Skin is a complex tissue that hosts various specialized cell types and performs many roles including physical barrier, immune and sensory functions. Therefore, modeling skin in vitro presents technical challenges for tissue engineering. Since the first attempts at engineering human epidermis in 1970s, there has been a growing interest in generating full-thickness skin constructs mimicking physiological functions by incorporating various skin components, such as vasculature and melanocytes for pigmentation...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28589954/wnt10a-mutation-causes-ectodermal-dysplasia-by-impairing-progenitor-cell-proliferation-and-klf4-mediated-differentiation
#16
Mingang Xu, Jeremy Horrell, Melinda Snitow, Jiawei Cui, Heather Gochnauer, Camille M Syrett, Staci Kallish, John T Seykora, Fei Liu, Dany Gaillard, Jonathan P Katz, Klaus H Kaestner, Brooke Levin, Corinne Mansfield, Jennifer E Douglas, Beverly J Cowart, Michael Tordoff, Fang Liu, Xuming Zhu, Linda A Barlow, Adam I Rubin, John A McGrath, Edward E Morrisey, Emily Y Chu, Sarah E Millar
Human WNT10A mutations are associated with developmental tooth abnormalities and adolescent onset of a broad range of ectodermal defects. Here we show that β-catenin pathway activity and adult epithelial progenitor proliferation are reduced in the absence of WNT10A, and identify Wnt-active self-renewing stem cells in affected tissues including hair follicles, sebaceous glands, taste buds, nails and sweat ducts. Human and mouse WNT10A mutant palmoplantar and tongue epithelia also display specific differentiation defects that are mimicked by loss of the transcription factor KLF4...
June 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28586641/tregs-expand-the-skin-stem-cell-niche
#17
Valerie Horsley, Shruti Naik
Regulatory T cells (Tregs) are emerging as an essential stem cell niche component that promotes wound repair in adipose, muscle, and lung tissues. Recently in Cell, Ali et al. (2017) report that skin resident Tregs facilitate the proliferation and differentiation of hair follicle stem cells through Notch signaling.
June 5, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28565767/hair-follicle-derived-mesenchymal-cells-support-undifferentiated-growth-of-embryonic-stem-cells
#18
Vanessa Carvalho Coelho de Oliveira, Danúbia Silva Dos Santos, Leandro Vairo, Tais Hanae Kasai Brunswick, Luiz Alberto Soares Pimentel, Adriana Bastos Carvalho, Antonio Carlos Campos de Carvalho, Regina Coeli Dos Santos Goldenberg
The aim of the present study was to investigate whether feeder layers composed of human hair follicle-derived mesenchymal stem cells (hHFDCs) are able to support human embryonic stem cells (hESCs). hHFDCs and mouse embryonic fibroblasts (MEFs) were isolated and cultured in Dulbecco's modified Eagle's medium (DMEM)/F-12 and low-glucose DMEM, respectively. hHFDCs were passaged three times and subsequently characterized. hHFDCs and MEFs were mitotically inactivated with mitomycin C for 3 h prior to co-culture with H9-hESCs...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28553937/stem-cell-plasticity-enables-hair-regeneration-following-lgr5-cell-loss
#19
Joerg D Hoeck, Brian Biehs, Antonina V Kurtova, Noelyn M Kljavin, Felipe de Sousa E Melo, Bruno Alicke, Hartmut Koeppen, Zora Modrusan, Robert Piskol, Frederic J de Sauvage
Under injury conditions, dedicated stem cell populations govern tissue regeneration. However, the molecular mechanisms that induce stem cell regeneration and enable plasticity are poorly understood. Here, we investigate stem cell recovery in the context of the hair follicle to understand how two molecularly distinct stem cell populations are integrated. Utilizing diphtheria-toxin-mediated cell ablation of Lgr5(+) (leucine-rich repeat-containing G-protein-coupled receptor 5) stem cells, we show that killing of Lgr5(+) cells in mice abrogates hair regeneration but this is reversible...
June 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28552347/regulatory-t-cells-in-skin-facilitate-epithelial-stem-cell-differentiation
#20
Niwa Ali, Bahar Zirak, Robert Sanchez Rodriguez, Mariela L Pauli, Hong-An Truong, Kevin Lai, Richard Ahn, Kaitlin Corbin, Margaret M Lowe, Tiffany C Scharschmidt, Keyon Taravati, Madeleine R Tan, Roberto R Ricardo-Gonzalez, Audrey Nosbaum, Marta Bertolini, Wilson Liao, Frank O Nestle, Ralf Paus, George Cotsarelis, Abul K Abbas, Michael D Rosenblum
The maintenance of tissue homeostasis is critically dependent on the function of tissue-resident immune cells and the differentiation capacity of tissue-resident stem cells (SCs). How immune cells influence the function of SCs is largely unknown. Regulatory T cells (Tregs) in skin preferentially localize to hair follicles (HFs), which house a major subset of skin SCs (HFSCs). Here, we mechanistically dissect the role of Tregs in HF and HFSC biology. Lineage-specific cell depletion revealed that Tregs promote HF regeneration by augmenting HFSC proliferation and differentiation...
June 1, 2017: Cell
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