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hair follicle stem cell

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https://www.readbyqxmd.com/read/29451559/linking-chromatin-dynamics-cell-fate-plasticity-and-tissue-homeostasis-in-adult-mouse-hair-follicle-stem-cells
#1
Jayhun Lee, Tudorita Tumbar
Cellular plasticity for fate acquisition is associated with distinct chromatin states, which include histone modifications, dynamic association of chromatin factors with the DNA, and global chromatin compaction and nuclear organization. While embryonic stem cell (ESC) plasticity in vitro and its link with chromatin states have been characterized in depth, little is known about tissue stem cell plasticity in vivo , during adult tissue homeostasis. Recently, we reported a distinct globally low level of histone H3 K4/9/27me3 in mouse hair follicle stem cells (HFSCs) during quiescence...
July 2017: Mol Life
https://www.readbyqxmd.com/read/29429517/in-vitro-identification-of-a-stem-cell-population-from-canine-hair-follicle-bulge-region
#2
Raquel V G de Castro, Mariana R Tavares, Fabiana F Bressan, Naira C G Pieri, Amanda Baracho Trindade Hill, Aline F Souza, Nathan da R N Cruz, Daniele S Martins, Carlos E Ambrósio, Flávio V Meirelles, Joaquim M Garcia
Skin is an extensive and easily accessible organ possessing various cell types that are constantly renewed. Previous studies have suggested the presence of a stem cell niche at the bulge region of the hair follicle, which contains cells positive for CD200 and CD34. Thus, this study sought to identify these cell populations in canine skin cells using the following methods 1- collecting samples of adult and fetal skin and isolating and culturing these cells using a method of simple enzymatic digestion and 2- testing the cell cultures for CD200 and CD34 in vitro and comparing them with skin tissue samples (in situ)...
February 2018: Tissue & Cell
https://www.readbyqxmd.com/read/29428355/dissecting-wnt-signaling-for-melanocyte-regulation-during-wound-healing
#3
Qi Sun, Piul Rabbani, Makoto Takeo, Soung-Hoon Lee, Chae Ho Lim, En-Nekema Shandi Noel, M Mark Taketo, Peggy Myung, Sarah Millar, Mayumi Ito
Abnormal pigmentation is commonly seen in the wound scar. Despite advancements in the research of wound healing, little is known about the repopulation of melanocytes in the healed skin. Previous studies have demonstrated the capacity of melanocyte stem cells (McSCs) in the hair follicle to contribute skin epidermal melanocytes following injury in mice and humans. Here, we focused on the Wnt pathway, known to be a vital regulator of McSCs in efforts to better understand the regulation of follicle-derived epidermal melanocytes during wound healing...
February 8, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29393477/long-non%C3%A2-coding-rna-regulates-hair-follicle-stem-cell-proliferation-and-differentiation-through-pi3k-akt-signal-pathway
#4
Bingjie Cai, Yunpeng Zheng, Shanshan Ma, Qu Xing, Xinxin Wang, Bo Yang, Guangwen Yin, Fangxia Guan
Long non-coding RNAs (lncRNAs) are defined as non-coding transcripts (>200 nucleotides) that serve important roles in the proliferation and differentiation of stem cells. Hair follicle stem cells (HFTs) have multidirectional differentiation potential and are able to differentiate into skin, hair follicles and sebaceous glands, serving a role in skin wound healing. The aim of the present study was to analyze the regulatory role of lncRNA AK015322 (IncRNA5322) in HFTs and the potential mechanism of IncRNA5322‑mediated differentiation of HFTs...
February 2, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29363542/ruxolitinib-protects-skin-stem-cells-and-maintains-skin-homeostasis-in-murine-graft-versus-host-disease
#5
Shuichiro Takahashi, Daigo Hashimoto, Eiko Hayase, Reiki Ogasawara, Hiroyuki Ohigashi, Takahide Ara, Emi Yokoyama, Ko Ebata, Satomi Matsuoka, Geoffrey Hill, Junichi Sugita, Masahiro Onozawa, Takanori Teshima
Graft-versus-host disease (GVHD) is the major complication after allogeneic stem cell transplantation (SCT). Emerging evidence indicates that GVHD leads to injury of intestinal stem cells. However, it remains to be investigated whether skin stem cells could be targeted in skin GVHD. Lgr5+ hair follicle stem cells (HFSCs) contribute to folliculogenesis and have a multipotent capacity to regenerate all epithelial cells in repair. We studied the fate of Lgr5+ HFSCs after SCT and explored the novel treatment to protect Lgr5+ HFSCs against GVHD using murine models of SCT...
January 23, 2018: Blood
https://www.readbyqxmd.com/read/29341216/primary-scarring-alopecia-a-retrospective-study-of-89-patients-in-taiwan
#6
Hsing-Jou Su, An-Yu Cheng, Cheng-Han Liu, Chia-Bau Chu, Chaw-Ning Lee, Chao-Kai Hsu, Julia Yu-Yun Lee, Chao-Chun Yang
Primary scarring alopecia (PSA) is caused by irreversible damage to the hair epithelial stem cells that reside in hair follicles. There is limited published work regarding PSA amongst the Asian population. The aim of this study was to evaluate the clinical features and to characterize the subtypes of PSA in southern Taiwan. In this retrospective case series, we reviewed 89 patients with pathology-confirmed PSA. The data was collected from National Cheng Kung University Hospital between 1988 through 2016. The clinical and histological data were reviewed, and the patients were characterized into different subtypes of PSA based on the clinical features and histological findings...
January 16, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29337183/temporal-layering-of-signaling-effectors-drives-chromatin-remodeling-during-hair-follicle-stem-cell-lineage-progression
#7
Rene C Adam, Hanseul Yang, Yejing Ge, Wen-Hui Lien, Ping Wang, Yilin Zhao, Lisa Polak, John Levorse, Sanjeethan C Baksh, Deyou Zheng, Elaine Fuchs
Tissue regeneration relies on resident stem cells (SCs), whose activity and lineage choices are influenced by the microenvironment. Exploiting the synchronized, cyclical bouts of tissue regeneration in hair follicles (HFs), we investigate how microenvironment dynamics shape the emergence of stem cell lineages. Employing epigenetic and ChIP-seq profiling, we uncover how signal-dependent transcription factors couple spatiotemporal cues to chromatin dynamics, thereby choreographing stem cell lineages. Using enhancer-driven reporters, mutagenesis, and genetics, we show that simultaneous BMP-inhibitory and WNT signals set the stage for lineage choices by establishing chromatin platforms permissive for diversification...
January 9, 2018: Cell Stem Cell
https://www.readbyqxmd.com/read/29327704/emerging-nonmetabolic-functions-of-skin-fat
#8
REVIEW
Christian F Guerrero-Juarez, Maksim V Plikus
Although the major white adipose depots evolved primarily to store energy, secrete hormones and thermo-insulate the body, multiple secondary depots developed additional specialized and unconventional functions. Unlike any other fat tissue, dermal white adipose tissue (dWAT) evolved a large repertoire of novel features that are central to skin physiology, which we discuss in this Review. dWAT exists in close proximity to hair follicles, the principal appendages of the skin that periodically grow new hairs. Responding to multiple hair-derived signals, dWAT becomes closely connected to cycling hair follicles and periodically cycles itself...
January 12, 2018: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/29321681/in-vivo-monitoring-of-hair-cycle-stages-via-bioluminescence-imaging-of-hair-follicle-ng2-cells
#9
Yasuhisa Tamura, Kumi Takata, Asami Eguchi, Yosky Kataoka
Hair growth occurs periodically in a cycle that consists of three different phases: growth, regression, and resting. The length of each phase is regulated by both intrinsic and extrinsic factors throughout life, and influenced by physiological and pathological conditions. Elongation of the resting phase and shortening of the growth phase occur during physiological ageing and in baldness, respectively. In vivo discrimination of each phase of the hair cycle can be used to research for regeneration of hair follicles as well as to evaluate the efficacy of hair regrowth treatments in the same individual...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29320711/anatomical-physiological-and-functional-diversity-of-adipose-tissue
#10
REVIEW
Rachel K Zwick, Christian F Guerrero-Juarez, Valerie Horsley, Maksim V Plikus
Adipose tissue depots can exist in close association with other organs, where they assume diverse, often non-traditional functions. In stem cell-rich skin, bone marrow, and mammary glands, adipocytes signal to and modulate organ regeneration and remodeling. Skin adipocytes and their progenitors signal to hair follicles, promoting epithelial stem cell quiescence and activation, respectively. Hair follicles signal back to adipocyte progenitors, inducing their expansion and regeneration, as in skin scars. In mammary glands and heart, adipocytes supply lipids to neighboring cells for nutritional and metabolic functions, respectively...
January 9, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29298425/hair-follicle-development-in-mouse-pluripotent-stem-cell-derived-skin-organoids
#11
Jiyoon Lee, Robert Bӧscke, Pei-Ciao Tang, Byron H Hartman, Stefan Heller, Karl R Koehler
The mammalian hair follicle arises during embryonic development from coordinated interactions between the epidermis and dermis. It is currently unclear how to recapitulate hair follicle induction in pluripotent stem cell cultures for use in basic research studies or in vitro drug testing. To date, generation of hair follicles in vitro has only been possible using primary cells isolated from embryonic skin, cultured alone or in a co-culture with stem cell-derived cells, combined with in vivo transplantation...
January 2, 2018: Cell Reports
https://www.readbyqxmd.com/read/29282803/hair-follicle-stem-cell-faith-is-dependent-on-chromatin-remodeling-capacity-following-low-dose-radiation
#12
Nadine Schuler, Sara Timm, Claudia E Rübe
The main function of the skin, to protect against the environment, is supported by the activity of different stem cell populations. The main focus of this study was elucidating the coping mechanisms of stem cells against the stimulation of constant exposure to genotoxic stresses, both endogenous and exogenous, to ensure long-term function. Investigation of various mouse strains, differing in their DNA repair capacity, enables us to clarify fractionated low-dose irradiation (LDR)-induced consequences for different stem cell populations of the murine hair follicle in their physiological stem cell niche...
December 28, 2017: Stem Cells
https://www.readbyqxmd.com/read/29245976/gsdma3-regulates-hair-follicle-differentiation-via-wnt5a-mediated-non-canonical-wnt-signaling-pathway
#13
Long He, Mingxing Lei, Yizhan Xing, Yuhong Li, Chunyan Hu, Peixing Chen, Xiaohua Lian, Tian Yang, Wanqian Liu, Li Yang
Hair follicle is a mini-organ that consists of complex but well-organized structures, which are differentiated from hair follicle progenitor or stem cells. How non-canonical Wnt signaling pathway is involved in regulating hair follicle differentiation remains elusive. Here we showed that Wnt5a regulates hair follicle differentiation through an epithelial-mesenchymal interaction mechanism in mice. We first observed that Wnt5a is expressed in the epithelial and dermal papilla cells during hair follicle development and growth...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29244903/dermal-fibroblast-in-cutaneous-development-and-healing
#14
REVIEW
Venkata Thulabandu, Demeng Chen, Radhika P Atit
The skin is the largest organ of the body and is composed of two layers: the overlying epidermis and the underlying dermis. The dermal fibroblasts originate from distinct locations of the embryo and contain the positional identity and patterning information in the skin. The dermal fibroblast progenitors differentiate into various cell types that are fated to perform specific functions such as hair follicle initiation and scar formation during wound healing. Recent studies have revealed the heterogeneity and plasticity of dermal fibroblasts within skin, which has implications for skin disease and tissue engineering...
December 15, 2017: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/29227728/use-of-low-level-laser-therapy-in-treatment-of-the-androgenic-alopecia-the-first-systematic-review
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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