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muscle stem cells

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https://www.readbyqxmd.com/read/29223160/cathelicidin-ll37-promotes-epithelial-and-smooth-muscle-like-differentiation-of-adipose-derived-stem-cells-through-the-wnt-%C3%AE-catenin-and-nf-%C3%AE%C2%BAb-pathways
#1
Yongwei Li, Zhengfei Shan, Bin Yang, Diandong Yang, Changping Men, Yuanshan Cui, Jitao Wu
Ureter reconstruction is a difficult procedure in urology. Adipose-derived stem cells (ADSCs), along with multipotency and self-renewal capacity, are a preferred choice for tissue engineering-based ureteral reconstruction. We explored the synergic role of cathelicidin LL37 (LL37) in epithelial and smooth-muscle-like differentiation. ADSCs were separated from adipose tissues of mouse and characterized by flow cytometry. The ADSCs were then stably transfected with pGC-FU-GFP (pGC) or pGC containing full-length LL37 (pGC-LL37), respectively...
November 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/29222849/bone-marrow-transplantation-improves-motor-activity-in-a-mouse-model-of-ataxia
#2
David Díaz, Marina Piquer-Gil, Javier Sánchez Recio, María Magdalena Martínez-Losa, José Ramón Alonso, Eduardo Weruaga, Manuel Álvarez-Dolado
Ataxias are locomotor disorders that can have an origin both neural and muscular, although both impairments are related. Unfortunately, ataxia has no cure and the current therapies are aimed at motor re-education or muscular reinforcement. Nevertheless, cell therapy is becoming a promising approach to deal with incurable neural diseases, including neuro-muscular ataxias. Here we have used a model of ataxia, the PCD mutant mouse, to study the effect of healthy (wild-type) bone marrow transplantation on the restoration of defective mobility...
December 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29221805/skeletal-muscle-regenerative-potential-of-human-mustem-cells-following-transplantation-into-injured-mice-muscle
#3
Judith Lorant, Charlotte Saury, Cindy Schleder, Florence Robriquet, Blandine Lieubeau, Elisa Négroni, Isabelle Leroux, Lucie Chabrand, Sabrina Viau, Candice Babarit, Mireille Ledevin, Laurence Dubreil, Antoine Hamel, Armelle Magot, Chantal Thorin, Laëtitia Guevel, Bruno Delorme, Yann Péréon, Gillian Butler-Browne, Vincent Mouly, Karl Rouger
After intra-arterial delivery in the dystrophic dog, allogeneic muscle-derived stem cells, termed MuStem cells, contribute to long-term stabilization of the clinical status and preservation of the muscle regenerative process. However, it remains unknown whether the human counterpart could be identified, considering recent demonstrations of divergent features between species for several somatic stem cells. Here, we report that MuStem cells reside in human skeletal muscle and display a long-term ability to proliferate, allowing generation of a clinically relevant amount of cells...
October 20, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29221154/expression-of-ganglioside-gd2-reprogram-the-lipid-metabolism-and-emt-phenotype-in-bladder-cancer
#4
Venkatrao Vantaku, Sri Ramya Donepudi, Chandrashekar R Ambati, Feng Jin, Vasanta Putluri, Khoa Nguyen, Kimal Rajapakshe, Cristian Coarfa, Venkata Lokesh Battula, Yair Lotan, Nagireddy Putluri
High-grade Bladder Cancer (BLCA) represents the most aggressive and treatment-resistant cancer that renders the patients with poor survival. However, only a few biomarkers have been identified for the detection and treatment of BLCA. Recent studies show that ganglioside GD2 can be used as cancer biomarker and/or therapeutic target for various cancers. Despite its potential relevance in cancer diagnosis and therapeutics, the role of GD2 is unknown in BLCA. Here, we report for the first time that high-grade BLCA tissues and cell lines have higher expression of GD2 compared to low-grade by high-resolution Mass Spectrometry...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220665/mtorc1-activation-during-repeated-regeneration-impairs-somatic-stem-cell-maintenance
#5
Samantha Haller, Subir Kapuria, Rebeccah R Riley, Monique N O'Leary, Katherine H Schreiber, Julie K Andersen, Simon Melov, Jianwen Que, Thomas A Rando, Jason Rock, Brian K Kennedy, Joseph T Rodgers, Heinrich Jasper
The balance between self-renewal and differentiation ensures long-term maintenance of stem cell (SC) pools in regenerating epithelial tissues. This balance is challenged during periods of high regenerative pressure and is often compromised in aged animals. Here, we show that target of rapamycin (TOR) signaling is a key regulator of SC loss during repeated regenerative episodes. In response to regenerative stimuli, SCs in the intestinal epithelium of the fly and in the tracheal epithelium of mice exhibit transient activation of TOR signaling...
December 7, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/29216542/loss-of-heme-oxygenase-1-accelerates-mesodermal-gene-expressions-during-embryoid-body-development-from-mouse-embryonic-stem-cells
#6
Yan-Liang Lai, Chen-Yu Lin, Wei-Cheng Jiang, Yen-Chun Ho, Chung-Huang Chen, Shaw-Fang Yet
Heme oxygenase (HO)-1 is an inducible stress response protein and well known to protect cells and tissues against injury. Despite its important function in cytoprotection against physiological stress, the role of HO-1 in embryonic stem cell (ESC) differentiation remains largely unknown. We showed previously that induced pluripotent stem (iPS) cells that lack HO-1 are more sensitive to oxidant stress-induced cell death and more prone to lose pluripotent markers upon LIF withdrawal. To elucidate the role of HO-1 in ESC differentiation and to rule out the controversy of potential gene flaws in iPS cells, we derived and established mouse HO-1 knockout ESC lines from HO-1 knockout blastocysts...
November 22, 2017: Redox Biology
https://www.readbyqxmd.com/read/29215185/potential-of-autologous-adipose-derived-stem-cells-to-regenerate-atrophied-muscle-in-a-rat-model
#7
Ji Ung Park, Sung Tack Kwon
Muscle atrophy results in severe functional impairment and is a significant clinical problem. We examined and characterized the therapeutic effects of autologous adipose-derived stem cells (ADCSs) using an in vivo muscle atrophy rat model. To identify the effect of injected ADSCs into muscle, we developed the following two models of muscle atrophy in rats: induction of denervation by sciatic nerve defects; and nerve repair after severing the sciatic nerve. The inguinal fat pads were harvested from each rat and autologous ADSCs were cultured and ADSCs were injected in the right hind limbs as the experimental group, while normal saline was injected in the left hind limbs, which served as the control group...
December 7, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29214379/dual-contribution-of-mesenchymal-stem-cells-employed-for-tissue-engineering-of-peripheral-nerves-trophic-activity-and-differentiation-into-connective-tissue-cells
#8
F Evaristo-Mendonça, A Carrier-Ruiz, R de Siqueira-Santos, R M P Campos, B Rangel, T H Kasai-Brunswick, V T Ribeiro-Resende
Adult peripheral nerves in vertebrates can regrow their axons and re-establish function after crush lesion. However, when there is extensive loss of a nerve segment, due to an accident or compressive damage caused by tumors, regeneration is strongly impaired. In order to overcome this problem, bioengineering strategies have been employed, using biomaterials formed by key cell types combined with biodegradable polymers. Many of these strategies are successful, and regenerated nerve tissue can be observed 12 weeks after the implantation...
December 7, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/29212899/novel-mutation-in-flnc-filamin-c-causes-familial-restrictive-cardiomyopathy
#9
Nathan R Tucker, Micheal A McLellan, Dongjian Hu, Jiangchuan Ye, Victoria A Parsons, Robert W Mills, Sebastian Clauss, Elena Dolmatova, Marisa A Shea, David J Milan, Nandita S Scott, Mark Lindsay, Steven A Lubitz, Ibrahim J Domian, James R Stone, Honghuang Lin, Patrick T Ellinor
BACKGROUND: Restrictive cardiomyopathy (RCM) is a rare cardiomyopathy characterized by impaired diastolic ventricular function resulting in a poor clinical prognosis. Rarely, heritable forms of RCM have been reported, and mutations underlying RCM have been identified in genes that govern the contractile function of the cardiomyocytes. METHODS AND RESULTS: We evaluated 8 family members across 4 generations by history, physical examination, electrocardiography, and echocardiography...
December 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/29212896/the-novel-desmin-mutation-p-glu401asp-impairs-filament-formation-disrupts-cell-membrane-integrity-and-causes-severe-arrhythmogenic-left-ventricular-cardiomyopathy-dysplasia
#10
Francisco José Bermúdez-Jiménez, Víctor Carriel, Andreas Brodehl, Miguel Alaminos, Antonio Campos, Ilona Schirmer, Hendrik Milting, Beatriz Álvarez Abril, Miguel Álvarez, Silvia López-Fernández, Diego García-Giustiniani, Lorenzo Monserrat, Luis Tercedor, Juan Jiménez-Jáimez
Background -Desmin (DES) mutations cause severe skeletal and cardiac muscle disease with heterogeneous phenotypes. Recently, DES mutations were described in patients with inherited arrhythmogenic right ventricular cardiomyopathy/dysplasia (iARVC/D), although their cellular and molecular pathomechanisms are not precisely known. Our aim is to describe clinically and functionally the novel DES-p.Glu401Asp mutation as a cause of inherited left ventricular arrhythmogenic cardiomyopathy/dysplasia (iLVAC/D). Methods -We identified the novel DES mutation p...
December 6, 2017: Circulation
https://www.readbyqxmd.com/read/29210111/stro-1-confers-myofibroblast-transdifferentiation-in-fibroblasts-derived-from-oral-submucous-fibrosis
#11
Cheng-Chia Yu, Yi-Wen Liao, Chuan-Hang Yu, Yu-Chao Chang
BACKGROUND: STRO-1 is a mesenchymal cell marker present on all clonogenic stromal precursors. Current evidence has indicated that the pathogenesis of fibrotic changes may be mediated by stemness properties. The aim of this study was to investigate the role of STRO-1 in areca quid chewing-associated oral submucous fibrosis (OSF). METHODS: Thirty OSF specimens and ten normal buccal mucosa were examined by immunohistochemistry. The activity of STRO-1 from fibroblasts cultured from normal buccal mucosa (BMFs) and OSF (OSFFs) were measureed and the effects of arecoline, a major areca nut alkaloid, on STRO-1 in BMFs...
December 6, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/29207055/therapeutic-effects-of-conditioned-medium-from-bone-marrow-derived-mesenchymal-stem-cells-on-epithelial-mesenchymal-transition-in-a549-cells
#12
Xin Wang, Jun-Ling Gao, Man-Man Zhao, Hui-Xing Zhu, Yan-Xia Tian, Ran Li, Xiao-Hua Jiang, Lei Yu, Jing-Rui Tian, Jian-Zhong Cui
Pulmonary fibrosis (PF) is a chronic lung disease. The transforming growth factor-β1 (TGF-β1)/Smad3 signaling pathway plays an important role in the pathogenesis of pulmonary fibrosis. Bone marrow-derived mesenchymal stem cells (BMSCs) have been shown to be a modulator of the molecular aspects of the fibrosis pathway. However, it is still unknown as to whether the conditioned medium from BMSCs (BMSCs-CM) inhibits the epithelial-mesenchymal transition (EMT) process. This study confirmed the hypothesis that BMSCs-CM exerts an anti-fibrotic effect on human type II alveolar epithelial cells (A549) by suppressing the phosphorylation of Smad3...
November 24, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29206194/adipose-derived-stem-cells-for-corneal-wound-healing-after-laser-induced-corneal-lesions-in-mice
#13
Marco Zeppieri, Maria Letizia Salvetat, Antonio Beltrami, Daniela Cesselli, Rossella Russo, Ignacio Alcalde, Jesús Merayo-Lloves, Paolo Brusini, Pier Camillo Parodi
The aim of our study was to assess the clinical effectiveness of topical adipose derived stem cell (ADSC) treatment in laser induced corneal wounds in mice by comparing epithelial repair, inflammation, and histological analysis between treatment arms. Corneal lesions were performed on both eyes of 40 mice by laser induced photorefractive keratectomy. All eyes were treated with topical azythromycin bid for three days. Mice were divided in three treatment groups (n = 20), which included: control, stem cells and basic serum; which received topical treatment three times daily for five consecutive days...
December 5, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29204832/plasticity-of-the-muscle-stem-cell-microenvironment
#14
Ivana Dinulovic, Regula Furrer, Christoph Handschin
Satellite cells (SCs) are adult muscle stem cells capable of repairing damaged and creating new muscle tissue throughout life. Their functionality is tightly controlled by a microenvironment composed of a wide variety of factors, such as numerous secreted molecules and different cell types, including blood vessels, oxygen, hormones, motor neurons, immune cells, cytokines, fibroblasts, growth factors, myofibers, myofiber metabolism, the extracellular matrix and tissue stiffness. This complex niche controls SC biology-quiescence, activation, proliferation, differentiation or renewal and return to quiescence...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29204825/stem-cell-microenvironments-and-beyond
#15
Alexander Birbrair
Endogenous stem cells are indispensable to keep tissue homeostasis due to their unique ability to generate more specialized cell types in an organized way depending on the body needs. Precise control over stem cell differentiation is essential for organogenesis and tissue homeostasis. Stem cells reside in specialized microenvironments, also called niches, which maintain them in an undifferentiated and self-renewing state. The cellular and molecular mechanisms of stem cell maintenance are key to the regulation of homeostasis and likely contribute to several disorders when altered during adulthood...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29203538/high-mobility-group-box-1-orchestrates-tissue-regeneration-via-cxcr4
#16
Mario Tirone, Ngoc Lan Tran, Chiara Ceriotti, Andrea Gorzanelli, Monica Canepari, Roberto Bottinelli, Angela Raucci, Stefania Di Maggio, César Santiago, Mario Mellado, Marielle Saclier, Stéphanie François, Giorgia Careccia, Mingzhu He, Francesco De Marchis, Valentina Conti, Sabrina Ben Larbi, Sylvain Cuvellier, Maura Casalgrandi, Alessandro Preti, Bénédicte Chazaud, Yousef Al-Abed, Graziella Messina, Giovanni Sitia, Silvia Brunelli, Marco Emilio Bianchi, Emilie Vénéreau
Inflammation and tissue regeneration follow tissue damage, but little is known about how these processes are coordinated. High Mobility Group Box 1 (HMGB1) is a nuclear protein that, when released on injury, triggers inflammation. We previously showed that HMGB1 with reduced cysteines is a chemoattractant, whereas a disulfide bond makes it a proinflammatory cytokine. Here we report that fully reduced HMGB1 orchestrates muscle and liver regeneration via CXCR4, whereas disulfide HMGB1 and its receptors TLR4/MD-2 and RAGE (receptor for advanced glycation end products) are not involved...
December 4, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29201230/inhibition-of-penile-tunica-albuginea-myofibroblasts-activity-by-adipose-derived-stem-cells
#17
Hesong Jiang, Qingqiang Gao, Xiaoyan Che, Leilei Zhu, Zheng Zhang, Yun Chen, Yutian Dai
The activation of tunica albuginea myofibroblasts (MFs) serves an essential role in Peyronie's disease (PD). Increasing evidence has reported that adipose tissue-derived stem cells (ADSCs) have been demonstrated to attenuate the symptoms of PD in animal models. However, the mechanisms of the antifibrotic effects of ADSCs in PD remain to be fully elucidated. In the present study, the inhibitory effects and possible mechanism of ADSCs on the activation of MFs derived from rat penile tunica albuginea were investigated...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29198825/coupling-between-myogenesis-and-angiogenesis-during-skeletal-muscle-regeneration-is-stimulated-by-restorative-macrophages
#18
Claire Latroche, Michèle Weiss-Gayet, Laurent Muller, Cyril Gitiaux, Pascal Leblanc, Sophie Liot, Sabrina Ben-Larbi, Rana Abou-Khalil, Nicolas Verger, Paul Bardot, Mélanie Magnan, Fabrice Chrétien, Rémi Mounier, Stéphane Germain, Bénédicte Chazaud
In skeletal muscle, new functions for vessels have recently emerged beyond oxygen and nutrient supply, through the interactions that vascular cells establish with muscle stem cells. Here, we demonstrate in human and mouse that endothelial cells (ECs) and myogenic progenitor cells (MPCs) interacted together to couple myogenesis and angiogenesis in vitro and in vivo during skeletal muscle regeneration. Kinetics of gene expression of ECs and MPCs sorted at different time points of regeneration identified three effectors secreted by both ECs and MPCs...
November 24, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/29198704/ischemic-flap-survival-improvement-by-composition-selective-fat-grafting-with-novel-adipose-tissue-derived-product-stromal-vascular-fraction-gel
#19
Pan Zhang, Jingwei Feng, Yunjun Liao, Junrong Cai, Tao Zhou, Mingliang Sun, Jianhua Gao, Kai Gao
BACKGROUND: Flap necrosis due to insufficient blood supply is a common postoperative complication in random pattern flaps. Stem cell therapies have emerged as promising biologics for tissue ischemia. A novel fat derived product, stromal vascular fraction gel (SVF-gel), can be prepared with lipoaspirate through simple mechanical processing, removing only the lipid content. SVF-gel enriches adipose-derived stem cells and potentially beneficial for flap necrosis. METHODS: Nude mice ischemic flaps were treated with human SVF-gel, stromal vascular fraction (SVF) cell suspension or saline (n = 10)...
November 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29197029/vasculogenic-and-angiogenic-potential-of-adipose-stromal-vascular-fraction-cell-populations-in-vitro
#20
Joseph S Zakhari, Jacob Zabonick, Brian Gettler, Stuart K Williams
Adipose-derived stromal vascular fraction (SVF) is a heterogeneous cell source that contains endothelial cells, pericytes, smooth muscle cells, stem cells, and other accessory immune and stromal cells. The SVF cell population has been shown to support vasculogenesis in vitro as well vascular maturation in vivo. Matrigel, an extracellular matrix (ECM) mixture has been utilized in vitro to evaluate tube formation of purified endothelial cell systems. We have developed an in vitro system that utilizes freshly isolated SVF and ECM molecules both in pure form (fibrin, laminin, collagen) as well as premixed form (Matrigel) to evaluate endothelial tip cell formation, endothelial stalk elongation, and early stages of branching and inosculation...
December 1, 2017: In Vitro Cellular & Developmental Biology. Animal
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