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https://www.readbyqxmd.com/read/29040534/macrophages-escape-klotho-gene-silencing-in-the-mdx-mouse-model-of-duchenne-muscular-dystrophy-and-promote-muscle-growth-and-increase-satellite-cell-numbers-through-a-klotho-mediated-pathway
#1
Michelle Wehling-Henricks, Steven S Welc, Guiseppina Samengo, Chiara Rinaldi, Catherine Lindsey, Ying Wang, Jeongyoon Lee, Makoto Kuro-O, James G Tidball
Duchenne muscular dystrophy (DMD) is a muscle wasting disease in which inflammation influences the severity of pathology. We found that the onset of muscle inflammation in the mdx mouse model of DMD coincides with large increases in expression of pro-inflammatory cytokines [tumor necrosis factor-α (TNFα); interferon gamma (IFNγ)] and dramatic reductions of the pro-myogenic protein Klotho in muscle cells and large increases of Klotho in pro-regenerative, CD206+ macrophages. Furthermore, TNFα and IFNγ treatments reduced Klotho in muscle cells and increased Klotho in macrophages...
October 12, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29036909/diabetes-induced-dysfunction-of-mitochondria-and-stem-cells-in-skeletal-muscle-and-the-nervous-system
#2
REVIEW
Shin Fujimaki, Tomoko Kuwabara
Diabetes mellitus is one of the most common metabolic diseases spread all over the world, which results in hyperglycemia caused by the breakdown of insulin secretion or insulin action or both. Diabetes has been reported to disrupt the functions and dynamics of mitochondria, which play a fundamental role in regulating metabolic pathways and are crucial to maintain appropriate energy balance. Similar to mitochondria, the functions and the abilities of stem cells are attenuated under diabetic condition in several tissues...
October 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29035685/mechanistic-effect-of-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-on-the-submandibular-salivary-gland-in-ovariectomized-rats
#3
Zienab Gouda, Mohamed Khalifa, Sally Shalaby, Samia Hussein
To reveal the effect of human umbilical cord blood-derived mesenchymal stem cells (hUCB-MSCs) on the submandibular gland after bilateral ovariectomy, 21 adult Sprague-Dawley female rats were divided equally into three groups: sham-operated group (SHAM), ovariectomized group (OVX) and OVX received repeated intravenous injection of hUCB-MSCs group (OVX + hUCB-MSCs). RT-PCR for AQP3, AQP4, AQP5 and BMP6 gene expression was determined. The cellular localization and expression of anti-human CD105 anti-human CD34, anti-proliferating nuclear antigen (PCNA), anti-single stranded DNA(ssDNA), anti-Caspase 3, anti-aquaporin 1(AQP1) and anti-α smooth muscle actin(α-SMA) were determined immunohistochemically...
October 16, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29034878/generation-of-an-induced-pluripotent-stem-cell-line-cscrmi001-a-from-a-patient-with-a-new-type-of-limb-girdle-muscular-dystrophy-lgmd-due-to-a-missense-mutation-in-poglut1-rumi
#4
Jianbo Wu, Samuel D Hunt, Nadine Matthias, Emilia Servián-Morilla, Jonathan Lo, Hamed Jafar-Nejad, Carmen Paradas, Radbod Darabi
Recently, a new type of limb-girdle muscular dystrophy (LGMD type 2Z) has been identified due to a missense mutation in POGLUT1 (protein O-glucosyltransferase-Rumi), an enzyme capable of adding glucose to a distinct serine residue of epidermal growth factor-like repeats containing a C-X-S-X-(P/A)-C consensus sequence such as Notch receptors. Affected patients demonstrate reduced Notch signaling, decreased muscle stem cell pool and hypoglycosylation of α-dystroglycan, leading to LGMD phenotype. Here we report the generation and characterization of an iPSC line (CSCRMi001-A) from a LGMD-2Z patient with missense mutation in POGLUT1 which can be used for in vitro disease modeling...
October 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29034591/organ-on-a-chip-platforms-a-convergence-of-advanced-materials-cells-and-microscale-technologies
#5
REVIEW
Samad Ahadian, Robert Civitarese, Dawn Bannerman, Mohammad Hossein Mohammadi, Rick Lu, Erika Wang, Locke Davenport-Huyer, Ben Lai, Boyang Zhang, Yimu Zhao, Serena Mandla, Anastasia Korolj, Milica Radisic
Significant advances in biomaterials, stem cell biology, and microscale technologies have enabled the fabrication of biologically relevant tissues and organs. Such tissues and organs, referred to as organ-on-a-chip (OOC) platforms, have emerged as a powerful tool in tissue analysis and disease modeling for biological and pharmacological applications. A variety of biomaterials are used in tissue fabrication providing multiple biological, structural, and mechanical cues in the regulation of cell behavior and tissue morphogenesis...
October 16, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29030959/ipsc-derived-vascular-cell-spheroids-as-building-blocks-for-scaffold-free-biofabrication
#6
Leni Moldovan, April Barnard, Chang-Hyun Gil, Y Lin, Maria B Grant, Mervin C Yoder, Nutan Prasain, Nicanor I Moldovan
Recently a protocol was established to obtain large quantities of human induced pluripotent stem cells (iPSC)-derived endothelial progenitors, called endothelial colony forming cells (ECFC), and of candidate smooth-muscle forming cells (SMFC). Here, we tested their suitability for assembling in spheroids, and in larger 3D cell constructs. iPSC-derived ECFC and SMFC were labeled with tdTomato and eGFP, respectively. Spheroids were formed in ultra-low adhesive wells, and their dynamic proprieties were studied by time-lapse microscopy, or by confocal microscopy...
October 14, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29030819/single-edl-myofiber-isolation-for-analyses-of-quiescent-and-activated-muscle-stem-cells
#7
Caroline E Brun, Yu Xin Wang, Michael A Rudnicki
Adult satellite cells are quiescent, but are poised for activation in response to exercise, injury, or disease allowing adult muscle growth or repair. Once activated, satellite cells proliferate extensively to produce enough myogenic progenitors in order to regenerate the muscles. In order to self-renew, a subset of activated satellite cells can resist the myogenic differentiation and return to quiescence to replenish the satellite cell pool. These cellular processes that normally occur during skeletal muscle regeneration can be recapitulated ex vivo using isolated and cultured myofibers...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29029631/neurotrophic-support-by-traumatized-muscle-derived-multipotent-progenitor-cells-role-of-endothelial-cells-and-vascular-endothelial-growth-factor-a
#8
Heidi R H Zupanc, Peter G Alexander, Rocky S Tuan
BACKGROUND: Adult mesenchymal stem cells (MSCs) have been shown to increase nerve regeneration in animal models of nerve injury. Traumatized muscle-derived multipotent progenitor cells (MPCs) share important characteristics with MSCs and are isolated from severely damaged muscle tissue following surgical debridement. Previous investigations have shown that MPCs may be induced to increase production of several neurotrophic factors, suggesting the possible utility of autologous MPCs in peripheral nerve regeneration following injury...
October 13, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29027140/biosafety-and-antibacterial-ability-of-graphene-and-graphene-oxide-in-vitro-and-in-vivo
#9
Long Pang, Chunqiu Dai, Long Bi, Zhongshang Guo, Junjun Fan
In recent years, graphene (G) and graphene oxide (GO) nanoparticles have begun to be applied in surgical implant surface modification. However, biosafety and antibacterial ability of G and GO are still unclear. In this study, the biosafety of G and GO in vitro was evaluated by co-culture with bone marrow mesenchymal stem cells (BMSCs) and biosafety in vivo was observed by implanting materials into mice muscle tissue. Biosafety results showed that 10 μg/ml was the safety critical concentration for G and GO...
October 12, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29026781/bulge-region-as-a-putative-hair-follicle-stem-cells-niche-a-brief-review
#10
REVIEW
Sanaz Joulai Veijouye, Abazar Yari, Fatemeh Heidari, Nayereh Sajedi, Fatemeh Ghoroghi Moghani, Maliheh Nobakht
BACKGROUND: Hair follicle stem cells exist in different sites. Most of the hair follicle stem cells are reside in niche called bulge. Bulge region is located between the opening of sebaceous gland and the attachment site of the arrector pili muscle. METHODS: Data were collected using databases and resources of PubMed, Web of Science, Science Direct, Scopus, MEDLINE and their references from the earliest available published to identify English observational studies on hair follicle bulge region...
September 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/29023009/myogenic-satellite-cells-biological-milieu-and-possible-clinical-applications
#11
Raed S Said, Ayman G Mustafa, Hasan A Asfour, Emad I Shaqoura
Adult skeletal muscle is a post-mitotic terminally differentiated tissue that possesses an immense potential for regeneration after injury. This regeneration can be achieved by adult stem cells named satellite cells that inhabit the muscular tissue. These cells were first identified in 1961 and were described as being wedged between the plasma membrane of the muscle fiber and the surrounding basement membrane. Since their discovery, many researchers investigated their embryological origin and the exact role they play in muscle regeneration and repair...
2017: Pakistan Journal of Biological Sciences: PJBS
https://www.readbyqxmd.com/read/29022693/a-tri-layer-three-dimensional-hydrogel-composite-scaffold-containing-encapsulated-adipose-derived-stem-cells-promotes-bladder-reconstruction-via-sdf-1%C3%AE-cxcr4-pathway
#12
Dongdong Xiao, Hao Yan, Qiong Wang, Xiangguo Lv, Ming Zhang, Yang Zhao, Zhe Zhou, Jiping Xu, Qian Sun, Kang Sun, Wei Li, Mujun Lu
Bladder acellular matrix graft-alginate di-aldehyde-gelatin hydrogel-silk mesh (BAMG-HS) encapsulated with adipose-derived stem cells (ASCs) was evaluated in a rat model of augmentation cystoplasty, including BAMG-HS-ASCs (n = 18, subgroup n = 6 for 2, 4 and 12 weeks), acellular BAMG-HS (n = 6 for 12 weeks) and cystotomy control (n = 6 for 12 weeks) groups. Equipped with good cytocompatibility and superior mechanical properties (elastic modulus: 5.33 ± 0.96 MPa, maximum load: 28.90 ± 0.69 N), BAMG-HS acted a tri-layer "sandwich" scaffold with minimal interference in systemic homeostasis...
October 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29021711/ginsenoside-rg1-from-panax-ginseng-enhances-myoblast-differentiation-and-myotube-growth
#13
Ga-Yeon Go, Sang-Jin Lee, Ayoung Jo, Jaecheol Lee, Dong-Wan Seo, Jong-Sun Kang, Si-Kwan Kim, Su-Nam Kim, Yong Kee Kim, Gyu-Un Bae
BACKGROUND: Ginsenoside Rg1 belongs to protopanaxatriol-type ginsenosides and has diverse pharmacological activities. In this report, we investigated whether Rg1 could upregulate muscular stem cell differentiation and muscle growth. METHODS: C2C12 myoblasts, MyoD-transfected 10T1/2 embryonic fibroblasts, and HEK293T cells were treated with Rg1 and differentiated for 2 d, subjected to immunoblotting, immunocytochemistry, or immunoprecipitation. RESULTS: Rg1 activated promyogenic kinases, p38MAPK (mitogen-activated protein kinase) and Akt signaling, that in turn promote the heterodimerization with MyoD and E proteins, resulting in enhancing myogenic differentiation...
October 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29021296/lactate-promotes-synthetic-phenotype-in-vascular-smooth-muscle-cells
#14
Libang Yang, Ling Gao, Thomas J Nickel, Jing Yang, Jingyi Zhou, Adam Gilbertsen, Zhaohui Geng, Caitlin Johnson, Bernice Young, Craig Henke, Glenn R Gourley, Jianyi Zhang
Rationale: The phenotypes of vascular smooth-muscle cells (vSMCs) comprise a continuum bounded by predominantly contractile and synthetic cells. Some evidence suggests that contractile vSMCs can assume a more synthetic phenotype in response to ischemic injury, but the mechanisms that activate this phenotypic switch are poorly understood. Objective: To determine whether lactate, which increases in response to regional ischemia, may promote the synthetic phenotype in vSMCs. Methods and Results: Experiments were performed with vSMCs that had been differentiated from human induced pluripotent stem cells and then cultured in glucose-free, lactate-enriched (L(+)) medium or in standard (L(-)) medium...
October 11, 2017: Circulation Research
https://www.readbyqxmd.com/read/29018036/ccnd2-overexpression-enhances-the-regenerative-potency-of-human-induced-pluripotent-stem-cell-derived-cardiomyocytes-remuscularization-of-injured-ventricle
#15
Wuqiang Zhu, Meng Zhao, Saidulu Mattapally, Sifeng Chen, Jianyi Zhang
Rationale: The effectiveness of transplanted, human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) for treatment of ischemic myocardial injury is limited by the exceptionally low engraftment rate. Objective: To determine whether overexpression of the cell-cycle activator CCND2 in hiPSC-CMs can increase the graft size and improve myocardial recovery in a mouse model of myocardial infarction (MI) by increasing the proliferation of grafted cells. Methods and Results: Human CCND2 was delivered to hiPSCs via lenti-viral mediated gene transfection...
October 10, 2017: Circulation Research
https://www.readbyqxmd.com/read/29017029/fgf10-hippo-epithelial-mesenchymal-crosstalk-maintains-and-recruits-lung-basal-stem-cells
#16
Thomas Volckaert, Tingting Yuan, Cho-Ming Chao, Harold Bell, Alina Sitaula, Luisa Szimmtenings, Elie El Agha, Diptiman Chanda, Susan Majka, Saverio Bellusci, Victor J Thannickal, Reinhard Fässler, Stijn P De Langhe
The lung harbors its basal stem/progenitor cells (BSCs) in the protected environment of the cartilaginous airways. After major lung injuries, BSCs are activated and recruited to sites of injury. Here, we show that during homeostasis, BSCs in cartilaginous airways maintain their stem cell state by downregulating the Hippo pathway (resulting in increased nuclear Yap), which generates a localized Fgf10-expressing stromal niche; in contrast, differentiated epithelial cells in non-cartilaginous airways maintain quiescence by activating the Hippo pathway and inhibiting Fgf10 expression in airway smooth muscle cells (ASMCs)...
October 9, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28994005/characterisation-of-human-induced-pluripotent-stem-cell-derived-endothelial-cells-under-shear-stress-using-an-easy-to-use-microfluidic-cell-culture-system
#17
Rsituko Ohtani-Kaneko, Kenjiro Sato, Atsuhiro Tsutiya, Yuka Nakagawa, Kazutoshi Hashizume, Hidekatsu Tazawa
Induced pluripotent stem cell-derived endothelial cells (iPSC-ECs) can contribute to elucidating the pathogenesis of heart and vascular diseases and developing their treatments. Their precise characteristics in fluid flow however remain unclear. Therefore, the aim of the present study is to characterise these features. We cultured three types of ECs in a microfluidic culture system: commercially available human iPS-ECs, human umbilical vein endothelial cells (HUVECs) and human umbilical artery endothelial cells (HUAECs)...
October 9, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28990762/multichanneled-nerve-guidance-conduit-with-spatial-gradients-of-neurotrophic-factors-and-oriented-nanotopography-for-repairing-the-peripheral-nervous-system
#18
Yo-Cheng Chang, Ming-Hong Chen, Shih-Yung Liao, Hsi-Chin Wu, Chen-Hsiang Kuan, Jui-Sheng Sun, Tzu-Wei Wang
Peripheral nerve injuries, causing sensory and motor impairment, affect a great number of patients annually. It is therefore important to incorporate different strategies to promote nerve healing. Among the treatment options, however, the efficacy of nerve conduits is often compromised by their lack of living cells, insufficient growth factors, and absence of the extracellular matrix (ECM)-like structure. To improve the functional recovery, we aimed to develop a natural biodegradable multichanneled scaffold characterized with aligned electrospun nanofibers and neurotrophic gradient (MC/AN/NG) to guide axon outgrowth...
October 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28989053/pdgfs-and-their-receptors-in-vascular-stem-progenitor-cells-functions-and-therapeutic-potential-in-retinal-vasculopathy
#19
REVIEW
Weisi Lu, Xuri Li
Vascular stem/progenitor cells (VSCs) include endothelial progenitor cells, smooth muscle progenitor cells, pericytes, and mesenchymal stem cells. VSCs can produce functional and mature vascular cells required to build blood vessels. VSCs therefore play critical roles in vascular repair and regeneration, particularly, in various retinal vasculopathies, in which vascular defects are a devastating pathology. The platelet-derived growth factors (PDGFs) and their receptors (PDGFRs) are important regulators of numerous physiological events and diseases, and they play key roles in regulating the formation and function of blood vessels...
October 6, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28988988/human-induced-pluripotent-stem-cell-derived-cardiomyocyte-encapsulating-bioactive-hydrogels-improve-rat-heart-function-post-myocardial-infarction
#20
Andre Chow, Daniel J Stuckey, Emaddin Kidher, Mark Rocco, Richard J Jabbour, Catherine A Mansfield, Ara Darzi, Sian E Harding, Molly M Stevens, Thanos Athanasiou
Tissue engineering offers an exciting possibility for cardiac repair post myocardial infarction. We assessed the effects of combined polyethylene glycol hydrogel (PEG), human induced pluripotent stem cell-derived cardiomyocyte (iPSC-CM), and erythropoietin (EPO) therapy in a rat model of myocardial infarction. PEG with/out iPSC-CMs and EPO; iPSC-CMs in saline; or saline alone was injected into infarcted hearts shortly after infarction. Injection of almost any combination of the therapeutics limited acute elevations in chamber volumes...
October 4, 2017: Stem Cell Reports
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