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https://www.readbyqxmd.com/read/29055061/preservation-of-stem-cells-in-androgenetic-alopecia
#1
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/29054350/what-can-we-learn-from-ineffective-erythropoiesis-in-thalassemia
#2
REVIEW
Paraskevi Rea Oikonomidou, Stefano Rivella
Erythropoiesis is a dynamic process regulated at multiple levels to balance proliferation, differentiation and survival of erythroid progenitors. Ineffective erythropoiesis is a key feature of various diseases, including β-thalassemia. The pathogenic mechanisms leading to ineffective erythropoiesis are complex and still not fully understood. Altered survival and decreased differentiation of erythroid progenitors are both critical processes contributing to reduced production of mature red blood cells. Recent studies have identified novel important players and provided major advances in the development of targeted therapeutic approaches...
October 3, 2017: Blood Reviews
https://www.readbyqxmd.com/read/29053779/cell-based-therapeutic-strategies-for-multiple-sclerosis
#3
Neil J Scolding, Marcelo Pasquini, Stephen C Reingold, Jeffrey A Cohen
The availability of multiple disease-modifying medications with regulatory approval to treat multiple sclerosis illustrates the substantial progress made in therapy of the disease. However, all are only partially effective in preventing inflammatory tissue damage in the central nervous system and none directly promotes repair. Cell-based therapies, including immunoablation followed by autologous haematopoietic stem cell transplantation, mesenchymal and related stem cell transplantation, pharmacologic manipulation of endogenous stem cells to enhance their reparative capabilities, and transplantation of oligodendrocyte progenitor cells, have generated substantial interest as novel therapeutic strategies for immune modulation, neuroprotection, or repair of the damaged central nervous system in multiple sclerosis...
July 21, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29053691/quantitative-whole-mount-immunofluorescence-analysis-of-cardiac-progenitor-populations-in-mouse-embryos
#4
Evan Bardot, Nikos Tzavaras, Deanna L Benson, Nicole C Dubois
The use of ever-advancing imaging techniques has contributed broadly to our increased understanding of embryonic development. Pre-implantation development and organogenesis are two areas of research that have benefitted greatly from these advances, due to the high quality of data that can be obtained directly from imaging pre-implantation embryos or ex vivo organs. While pre-implantation embryos have yielded data with especially high spatial resolution, later stages have been less amenable to three-dimensional reconstruction...
October 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29052842/shear-stress-upregulates-regeneration-related-immediate-early-genes-in-liver-progenitors-in-3d-ecm-like-microenvironments
#5
Kenichiro Nishii, Erik Brodin, Taylor Renshaw, Rachael Weesner, Emma Moran, Shay Soker, Jessica L Sparks
The role of fluid stresses in activating the hepatic stem/progenitor cell regenerative response is not well understood. This study hypothesized that immediate early genes (IEGs) with known links to liver regeneration will be upregulated in liver progenitor cells (LPCs) exposed to in vitro shear stresses on the order of those produced from elevated interstitial flow after partial hepatectomy. The objectives were: (1) to develop a shear flow chamber for application of fluid stress to LPCs in 3D culture; and (2) to determine the effects of fluid stress on IEG expression in LPCs...
October 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29052615/effects-of-alcohol-abuse-on-proliferating-cells-stem-progenitor-cells-and-immature-neurons-in-the-adult-human-hippocampus
#6
Tara Wardi Le Maître, Gopalakrishnan Dhanabalan, Nenad Bogdanovic, Kanar Alkass, Henrik Druid
In animal studies, impaired adult hippocampal neurogenesis is associated with behavioral pathologies including addiction to alcohol. We hypothesize that alcohol abuse may have a detrimental effect on the neurogenic pool of the dentate gyrus in the human hippocampus. In this study we investigate whether alcohol abuse affects the number of proliferating cells, stem/progenitor cells and immature neurons in samples from postmortem human hippocampus. The specimens were isolated from deceased donors with an on-going alcohol abuse, and from controls with no alcohol overconsumption...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052594/corrigendum-minimizing-the-risk-of-allo-sensitization-to-optimize-the-benefit-of-allogeneic-cardiac-derived-stem-progenitor-cells
#7
Hocine R Hocine, Hicham El Costa, Noemie Dam, Jerome Giustiniani, Itziar Palacios, Pascale Loiseau, Armand Bensussan, Luis R Borlado, Dominique Charron, Caroline Suberbielle, Nabila Jabrane-Ferrat, Reem Al-Daccak
This corrects the article DOI: 10.1038/srep41125.
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29052586/corrigendum-epigenomic-reprogramming-of-adult-cardiomyocyte-derived-cardiac-progenitor-cells
#8
Yiqiang Zhang, Jiang F Zhong, Hongyu Qiu, W Robb MacLellan, Eduardo Marbán, Charles Wang
This corrects the article DOI: 10.1038/srep17686.
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29052516/pure-exercise-intolerance-and-ophthalmoplegia-associated-with-the-m-12-294g%C3%A2-%C3%A2-a-mutation-in-the-mt-tl2-gene-a-case-report
#9
Patrick Soldath, Karen Lindhardt Madsen, Astrid Emilie Buch, Morten Duno, Flemming Wibrand, John Vissing
BACKGROUND: Pure exercise intolerance associated with exclusive affection of skeletal muscle is a very rare phenotype of patients with mitochondrial myopathy. Moreover, the exercise intolerance in these rare patients is yet not well explored, as most of known cases have not been assessed by objective testing, but only by interview. We report a patient with a mitochondrial DNA (mtDNA) mutation that gives rise to an exclusive myopathy associated with exercise intolerance and ophthalmoplegia...
October 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29052507/metabolic-shift-in-density-dependent-stem-cell-differentiation
#10
Simar J Singh, William Turner, Drew E Glaser, Kara E McCloskey, Fabian V Filipp
BACKGROUND: Vascular progenitor cells (VPCs) derived from embryonic stem cells (ESCs) are a valuable source for cell- and tissue-based therapeutic strategies. During the optimization of endothelial cell (EC) inductions from mouse ESCs using our staged and chemically-defined induction methods, we found that cell seeding density but not VEGF treatment between 10 ng/mL and 40 ng/mL was a significant variable directing ESCs into FLK1(+) VPCs during stage 1 induction. Here, we examine potential contributions from cell-to-cell signaling or cellular metabolism in the production of VPCs from ESCs seeded at different cell densities...
October 20, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/29052350/platelet-lysate-activates-quiescent-cell-proliferation-and-reprogramming-in-human-articular-cartilage-involvement-of-hypoxia-inducible-factor-1
#11
Van Thi Nguyen, Ranieri Cancedda, Fiorella Descalzi
The idea of rescuing the body self-repair capability lost during evolution is progressively gaining ground in Regenerative Medicine. In particular, growth factors and bioactive molecules derived from activated platelets emerged as promising therapeutic agents acting as trigger for repair of tissue lesions and restoration of tissue functions. Aim of this study was to assess the potential of a Platelet Lysate (PL) for human articular cartilage repair considering its activity on progenitor cells and differentiated chondrocytes...
October 19, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29051854/an-important-function-of-petrosiol-e-in-inducing-the-differentiation-of-neuronal-progenitors-and-in-protecting-them-against-oxidative-stress
#12
Jing Liu, Linlin Wang, Yuguo Du, Sijin Liu
Insufficient endogenous neurotrophin supply contributes to neurodegeneration. Meanwhile, neuronal injuries are also attributed to oxidative stress upon toxin exposure. Thus, reconstruction neurite extension and antioxidative stress are the potential strategies for ameliorating neuronal injuries. However, there is no well-defined therapeutic developed in this regard. In search of such therapeutics, Petrosiol E is identified here as a potent inducer to guide the differentiation of neuronal progenitor cells. Petrosiol E also considerably promotes embryonic stem cell differentiation into neural ectoderm features...
October 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29050915/decellularized-matrix-of-adipose-derived-mesenchymal-stromal-cells-enhanced-retinal-progenitor-cell-proliferation-via-the-akt-erk-pathway-and-neuronal-differentiation
#13
Jing Ji, Dandan Zhang, Wei Wei, Bingqiao Shen, Yi Zhang, Yuyao Wang, Zhimin Tang, Ni Ni, Hao Sun, Jiaqiang Liu, Xianqun Fan, Ping Gu
BACKGROUND AIMS: Retinal progenitor cells (RPCs) are a promising cell therapy treatment for retinal degenerative diseases. However, problems with limited proliferation ability and differentiation preference toward glia rather than neurons restrict the clinical application of these RPCs. The extracellular matrix (ECM) has been recognized to provide an appropriate microenvironment to support stem cell adhesion and direct cell behaviors, such as self-renewal and differentiation. METHODS: In this study, decellularized matrix of adipose-derived mesenchymal stromal cells (DMA) was manufactured using a chemical agent method (0...
October 16, 2017: Cytotherapy
https://www.readbyqxmd.com/read/29050872/manf-promotes-differentiation-and-migration-of-neural-progenitor-cells-with-potential-neural-regenerative-effects-in-stroke
#14
Kuan-Yin Tseng, Jenni E Anttila, Konstantin Khodosevich, Raimo K Tuominen, Maria Lindahl, Andrii Domanskyi, Mikko Airavaara
Cerebral ischemia activates endogenous reparative processes, such as increased proliferation of neural stem cells (NSCs) in the subventricular zone (SVZ) and migration of neural progenitor cells (NPCs) toward the ischemic area. However, this reparative process is limited because most of the NPCs die shortly after injury or are unable to arrive at the infarct boundary. In this study, we demonstrate for the first time that endogenous mesencephalic astrocyte-derived neurotrophic factor (MANF) protects NSCs against oxygen-glucose-deprivation-induced injury and has a crucial role in regulating NPC migration...
September 21, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29050516/human-bone-marrow-mesenchymal-stromal-cell-derived-osteoblasts-promote-the-expansion-of-hematopoietic-progenitors-through-beta-catenin-and-notch-signaling-pathways
#15
Matthew Michalicka, Gavin Boisjoli, Suria Jahan, Owen Hovey, Emily Doxtator, Ahmad Abu-Khader, Roya Pasha, Nicolas Pineault
Coculture of hematopoietic stem cells (HSC) with primary stromal cells from HSC niches supports the maintenance and expansion of HSC and progenitors ex vivo. However, a major drawback is the availability of primary human samples for research and clinical applications. We investigated the use of in vitro derived osteoblasts as a new source of feeder cells and characterized the molecular pathways that mediate their growth promoting activities. First, we compared the growth and differentiation modulating activities of mesenchymal stromal cells (MSC)-derived osteoblasts (M-OST) to that of their undifferentiated precursor on umbilical cord blood (UCB) progenitors...
October 19, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/29050206/wnt-%C3%AE-catenin-signaling-promotes-aging-associated-hair-graying-in-mice
#16
Zhihui Zhang, Mingxing Lei, Haoran Xin, Chunyan Hu, Tian Yang, Yizhan Xing, Yuhong Li, Haiying Guo, Xiaohua Lian, Fang Deng
Canities is an obvious sign of aging in mouse and human, shown as hair graying. Melanocytes in the hair follicle show cyclic activity with hair cycling, which transitions from anagen, catagen to telogen. How the hairs turn gray during aging is not completely uncovered. Here, by using immunostaining and LacZ staining in Dct-LacZ mice, we show that β-catenin is expressed in melanocytes during hair cycling. RT-PCR, western blot and immunostaining show that β-catenin expression is significantly increased in both anagen and telogen skin of aged mice, when compared to the anagen and telogen skin of young mice, respectively...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050203/loss-of-egr1-a-human-del5q-gene-accelerates-bcr-abl-driven-chronic-myelogenous-leukemia
#17
Silvia Maifrede, Andrew Magimaidas, Xiaojin Sha, Kaushiki Mukherjee, Dan A Liebermann, Barbara Hoffman
There is substantial evidence that early growth response-1 (Egr1) gene, a zinc-finger transcription factor, behaves as a tumor suppressor in leukemia. This includes reports from this laboratory that constitutive Egr1 overrides leukemia conferred by deregulated c-Myc or E2F-1 in the M1 myeloid leukemic cell line by promoting differentiation. To investigate the effect of Egr1 on the initiation and progression of Chronic Myelogenous Leukemia (CML), lethally irradiated syngeneic wild type mice were reconstituted with bone marrow (BM) from either wild type or Egr1 null mice transduced with a 210-kD BCR-ABL-expressing MSCV-retrovirus (bone marrow transplantation {BMT})...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29049716/bone-marrow-derived-cell-recruitment-to-the-neurosensory-retina-and-retinal-pigment-epithelial-cell-layer-following-subthreshold-retinal-phototherapy
#18
Sergio Caballero, David L Kent, Nilanjana Sengupta, Sergio Li Calzi, Lynn Shaw, Eleni Beli, Leni Moldovan, James M Dominguez, Ramana S Moorthy, Maria B Grant
Purpose: We investigated whether subthreshold retinal phototherapy (SRPT) was associated with recruitment of bone marrow (BM)-derived cells to the neurosensory retina (NSR) and RPE layer. Methods: GFP chimeric mice and wild-type (WT) mice were subjected to SRPT using a slit-lamp infrared laser. Duty cycles of 5%, 10%, 15%, and 20% (0.1 seconds, 250 mW, spot size 50 μm) with 30 applications were placed 50 to 100 μm from the optic disc. In adoptive transfer studies, GFP+ cells were given intravenously immediately after WT mice received SRPT...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29049289/a-molecular-atlas-of-the-developing-ectoderm-defines-neural-neural-crest-placode-and-nonneural-progenitor-identity-in-vertebrates
#19
Jean-Louis Plouhinec, Sofía Medina-Ruiz, Caroline Borday, Elsa Bernard, Jean-Philippe Vert, Michael B Eisen, Richard M Harland, Anne H Monsoro-Burq
During vertebrate neurulation, the embryonic ectoderm is patterned into lineage progenitors for neural plate, neural crest, placodes and epidermis. Here, we use Xenopus laevis embryos to analyze the spatial and temporal transcriptome of distinct ectodermal domains in the course of neurulation, during the establishment of cell lineages. In order to define the transcriptome of small groups of cells from a single germ layer and to retain spatial information, dorsal and ventral ectoderm was subdivided along the anterior-posterior and medial-lateral axes by microdissections...
October 19, 2017: PLoS Biology
https://www.readbyqxmd.com/read/29048400/cd10-aldh-cells-are-the-sole-cisplatin-resistant-component-of-a-novel-ovarian-cancer-stem-cell-hierarchy
#20
Brendan Ffrench, Claudia Gasch, Karsten Hokamp, Cathy Spillane, Gordon Blackshields, Thamir Mahmoud Mahgoub, Mark Bates, Louise Kehoe, Aoibhinn Mooney, Ronan Doyle, Brendan Doyle, Dearbhaile O'Donnell, Noreen Gleeson, Bryan T Hennessy, Britta Stordal, Ciaran O'Riain, Helen Lambkin, Sharon O'Toole, John J O'Leary, Michael F Gallagher
It is long established that tumour-initiating cancer stem cells (CSCs) possess chemoresistant properties. However, little is known of the mechanisms involved, particularly with respect to the organisation of CSCs as stem-progenitor-differentiated cell hierarchies. Here we aimed to elucidate the relationship between CSC hierarchies and chemoresistance in an ovarian cancer model. Using a single cell-based approach to CSC discovery and validation, we report a novel, four-component CSC hierarchy based around the markers cluster of differentiation 10 (CD10) and aldehyde dehydrogenase (ALDH)...
October 19, 2017: Cell Death & Disease
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