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Induced pluripotent stem

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https://www.readbyqxmd.com/read/28211642/biomechanical-strain-exacerbates-inflammation-on-a-progeria-on-a-chip-model
#1
João Ribas, Yu Shrike Zhang, Patrícia R Pitrez, Jeroen Leijten, Mario Miscuglio, Jeroen Rouwkema, Mehmet Remzi Dokmeci, Xavier Nissan, Lino Ferreira, Ali Khademhosseini
Organ-on-a-chip platforms seek to recapitulate the complex microenvironment of human organs using miniaturized microfluidic devices. Besides modeling healthy organs, these devices have been used to model diseases, yielding new insights into pathophysiology. Hutchinson-Gilford progeria syndrome (HGPS) is a premature aging disease showing accelerated vascular aging, leading to the death of patients due to cardiovascular diseases. HGPS targets primarily vascular cells, which reside in mechanically active tissues...
February 17, 2017: Small
https://www.readbyqxmd.com/read/28210629/cellular-mechanisms-of-liver-regeneration-and-cell-based-therapies-of-liver-diseases
#2
REVIEW
Irina V Kholodenko, Konstantin N Yarygin
The emerging field of regenerative medicine offers innovative methods of cell therapy and tissue/organ engineering as a novel approach to liver disease treatment. The ultimate scientific foundation of both cell therapy of liver diseases and liver tissue and organ engineering is delivered by the in-depth studies of the cellular and molecular mechanisms of liver regeneration. The cellular mechanisms of the homeostatic and injury-induced liver regeneration are unique. Restoration of the mass of liver parenchyma is achieved by compensatory hypertrophy and hyperplasia of the differentiated parenchymal cells, hepatocytes, while expansion and differentiation of the resident stem/progenitor cells play a minor or negligible role...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28209385/a-comparison-of-the-pro-angiogenic-potential-of-human-induced-pluripotent-stem-cell-derived-endothelial-cells-and-induced-endothelial-cells-in-a-murine-model-of-peripheral-arterial-disease
#3
Zoe E Clayton, Gloria S C Yuen, Sara Sadeghipour, Jack D Hywood, Jack W T Wong, Ngan F Huang, Martin K C Ng, John P Cooke, Sanjay Patel
BACKGROUND: Endothelial cells derived from human induced pluripotent stem cells (iPSC-ECs) promote angiogenesis, and more recently induced endothelial cells (iECs) have been generated via fibroblast trans-differentiation. These cell types have potential as treatments for peripheral arterial disease (PAD). However, it is unknown whether different reprogramming methods produce cells that are equivalent in terms of their pro-angiogenic capabilities. OBJECTIVES: We aimed to directly compare iPSC-ECs and iECs in an animal model of PAD, in order to identify which cell type, if any, displays superior therapeutic potential...
January 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28207177/quaking-is-a-key-regulator-of-endothelial-cell-differentiation-neovascularization-and-angiogenesis
#4
Amy Cochrane, Sophia Kelaini, Marianna Tsifaki, James Bojdo, Marta Vilà-González, Daiana Drehmer, Rachel Caines, Corey Magee, Magdalini Eleftheriadou, Yanhua Hu, David Grieve, Alan W Stitt, Lingfang Zeng, Qingbo Xu, Andriana Margariti
The capability to derive endothelial cell (ECs) from induced Pluripotent Stem (iPS) cells holds huge therapeutic potential for cardiovascular disease. Objective- This study elucidates the precise role of the RNA-binding protein Quaking isoform 5 (QKI-5) during EC differentiation from both mouse and human iPS cells and dissects how RNA-binding proteins can improve differentiation efficiency towards cell therapy for important vascular diseases. iPS cells represent an attractive cellular approach for regenerative medicine today since they can be used to generate patient-specific therapeutic cells towards autologous cell therapy...
February 16, 2017: Stem Cells
https://www.readbyqxmd.com/read/28203597/intra-articular-implantation-of-mesenchymal-stem-cells-part-1-a-review-of-the-literature-for-prevention-of-postmeniscectomy-osteoarthritis
#5
Matthew J Kraeutler, Justin J Mitchell, Jorge Chahla, Eric C McCarty, Cecilia Pascual-Garrido
Osteoarthritis (OA) after a partial or total meniscectomy procedure is a common pathology. Because of the high incidence of meniscectomy in the general population, as well as the significant burden of knee OA, there is increasing interest in determining methods for delaying postmeniscectomy OA. Biological therapies, including mesenchymal stem cells (MSCs), induced pluripotent stem cells (iPSCs), and platelet-rich plasma (PRP), have been proposed as possible therapies that could delay OA in this and other settings...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28202998/-comparative-study-of-proliferative-and-periodontal-differentiation-propensity-of-induced-pluripotent-stem-cells-at-different-passages
#6
J W Li, X H Yin, Q X Luan
OBJECTIVE: To compare the proliferative and periodontal specific differentiation abilities of induced pluripotent stem cells (iPSCs) at different passages, and to investigate whether long term culturing would have a negative influence on their proliferation and specific differentiation capacity, thus providing a theoretical basis for further in-depth research on periodontal regeneration and the possible clinical applications of iPSCs. METHODS: IPSCs derived from human gingival fibroblasts at passages 5, 10, 15 and 20 were recovered and cultured in vitro...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202772/high-throughput-screening-of-tyrosine-kinase-inhibitor-cardiotoxicity-with-human-induced-pluripotent-stem-cells
#7
Arun Sharma, Paul W Burridge, Wesley L McKeithan, Ricardo Serrano, Praveen Shukla, Nazish Sayed, Jared M Churko, Tomoya Kitani, Haodi Wu, Alexandra Holmström, Elena Matsa, Yuan Zhang, Anusha Kumar, Alice C Fan, Juan C Del Álamo, Sean M Wu, Javid J Moslehi, Mark Mercola, Joseph C Wu
Tyrosine kinase inhibitors (TKIs), despite their efficacy as anticancer therapeutics, are associated with cardiovascular side effects ranging from induced arrhythmias to heart failure. We used human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs), generated from 11 healthy individuals and 2 patients receiving cancer treatment, to screen U.S. Food and Drug Administration-approved TKIs for cardiotoxicities by measuring alterations in cardiomyocyte viability, contractility, electrophysiology, calcium handling, and signaling...
February 15, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28201845/regenerative-medicine-and-the-biliary-tree
#8
Thiago M De Assuncao, Nidhi Jalan-Sakrikar, Robert C Huebert
Despite decades of basic research, biliary diseases remain prevalent, highly morbid, and notoriously difficult to treat. We have, however, dramatically increased our understanding of biliary developmental biology, cholangiocyte pathophysiology, and the endogenous mechanisms of biliary regeneration and repair. All of this complex and rapidly evolving knowledge coincides with an explosion of new technological advances in the area of regenerative medicine. New breakthroughs such as induced pluripotent stem cells and organoid culture are increasingly being applied to the biliary system; it is only a matter of time until new regenerative therapeutics for the cholangiopathies are unveiled...
February 2017: Seminars in Liver Disease
https://www.readbyqxmd.com/read/28199843/the-sin3a-hdac-corepressor-complex-functionally-cooperates-with-nanog-to-promote-pluripotency
#9
Arven Saunders, Xin Huang, Miguel Fidalgo, Michael H Reimer, Francesco Faiola, Junjun Ding, Carlos Sánchez-Priego, Diana Guallar, Carmen Sáenz, Dan Li, Jianlong Wang
Although SIN3A is required for the survival of early embryos and embryonic stem cells (ESCs), the role of SIN3A in the maintenance and establishment of pluripotency remains unclear. Here, we find that the SIN3A/HDAC corepressor complex maintains ESC pluripotency and promotes the generation of induced pluripotent stem cells (iPSCs). Members of the SIN3A/HDAC corepressor complex are enriched in an extended NANOG interactome and function in transcriptional coactivation in ESCs. We also identified a critical role for SIN3A and HDAC2 in efficient reprogramming of somatic cells...
February 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28199003/applications-of-induced-pluripotent-stem-cell-technologies-in-spinal-cord-injury
#10
REVIEW
Narihito Nagoshi, Hideyuki Okano
Numerous basic research studies have suggested the potential efficacy of neural precursor cell (NPC) transplantation in spinal cord injury (SCI). However, in most such studies the origin of the cells used was mainly fetal tissue or embryonic stem cells, both of which carry potential ethical concerns with respect to clinical use. The development of induced pluripotent stem cells (iPSCs) opened a new path toward regenerative medicine for SCI. iPSCs can be generated from somatic cells by induction of transcription factors, and induced to differentiate into NPCs with characteristics of cells of the central nervous system...
February 15, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28198124/long-distance-axonal-growth-and-protracted-functional-maturation-of-neurons-derived-from-human-induced-pluripotent-stem-cells-after-intracerebral-transplantation
#11
Jonathan C Niclis, Christopher Turner, Jennifer Durnall, Stuart McDougal, Jessica A Kauhausen, Bryan Leaw, Mirella Dottori, Clare L Parish, Lachlan H Thompson
The capacity for induced pluripotent stem (iPS) cells to be differentiated into a wide range of neural cell types makes them an attractive donor source for autologous neural transplantation therapies aimed at brain repair. Translation to the in vivo setting has been difficult, however, with mixed results in a wide variety of preclinical models of brain injury and limited information on the basic in vivo properties of neural grafts generated from human iPS cells. Here we have generated a human iPS cell line constitutively expressing green fluorescent protein as a basis to identify and characterize grafts resulting from transplantation of neural progenitors into the adult rat brain...
February 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28197667/discovery-and-progress-of-direct-cardiac-reprogramming
#12
REVIEW
Hidenori Kojima, Masaki Ieda
Cardiac disease remains a major cause of death worldwide. Direct cardiac reprogramming has emerged as a promising approach for cardiac regenerative therapy. After the discovery of MyoD, a master regulator for skeletal muscle, other single cardiac reprogramming factors (master regulators) have been sought. Discovery of cardiac reprogramming factors was inspired by the finding that multiple, but not single, transcription factors were needed to generate induced pluripotent stem cells (iPSCs) from fibroblasts. We first reported a combination of cardiac-specific transcription factors, Gata4, Mef2c, and Tbx5 (GMT), that could convert mouse fibroblasts into cardiomyocyte-like cells, which were designated as induced cardiomyocyte-like cells (iCMs)...
February 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28196690/gata6-plays-an-important-role-in-the-induction-of-human-definitive-endoderm-development-of-the-pancreas-and-functionality-of-pancreatic-%C3%AE-%C3%A2-cells
#13
Amita Tiyaboonchai, Fabian L Cardenas-Diaz, Lei Ying, Jean Ann Maguire, Xiuli Sim, Chintan Jobaliya, Alyssa L Gagne, Siddharth Kishore, Diana E Stanescu, Nkecha Hughes, Diva D De Leon, Deborah L French, Paul Gadue
Induced pluripotent stem cells were created from a pancreas agenesis patient with a mutation in GATA6. Using genome-editing technology, additional stem cell lines with mutations in both GATA6 alleles were generated and demonstrated a severe block in definitive endoderm induction, which could be rescued by re-expression of several different GATA family members. Using the endodermal progenitor stem cell culture system to bypass the developmental block at the endoderm stage, cell lines with mutations in one or both GATA6 alleles could be differentiated into β-like cells but with reduced efficiency...
February 8, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28196470/proteasome-impairment-in-neural-cells-derived-from-hmsn-p-patient-ipscs
#14
Nagahisa Murakami, Keiko Imamura, Yuishin Izumi, Naohiro Egawa, Kayoko Tsukita, Takako Enami, Takuya Yamamoto, Toshitaka Kawarai, Ryuji Kaji, Haruhisa Inoue
Hereditary motor and sensory neuropathy with proximal dominant involvement (HMSN-P) is caused by a heterozygous mutation (P285L) in Tropomyosin-receptor kinase Fused Gene (TFG), histopathologically characterized by progressive spinal motor neuron loss with TFG cytosolic aggregates. Although the TFG protein, found as a type of fusion oncoprotein, is known to facilitate vesicle transport from endoplasmic reticulum (ER) to Golgi apparatus at ER exit site, it is unclear how mutant TFG causes motor neuron degeneration...
February 15, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28194778/blood-brain-barrier-models-derived-from-individual-patients-a-new-frontier-an-editorial-highlight-on-an-isogenic-blood-brain-barrier-model-comprising-brain-endothelial-cells-astrocytes-and-neurons-derived-from-human-induced-pluripotent-stem-cells
#15
EDITORIAL
Jianming Xiang, Anuska V Andjelkovic, Michael M Wang, Richard F Keep
Read the highlighted article 'An isogenic blood-brain barrier model comprising brain endothelial cells, astrocytes, and neurons derived from human induced pluripotent stem cells' on doi: 10.1111/jnc.13923.
February 14, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28194397/a-novel-human-tissue-engineered-3-d-functional-vascularized-cardiac-muscle-construct
#16
Mani T Valarmathi, John W Fuseler, Jeffrey M Davis, Robert L Price
Organ tissue engineering, including cardiovascular tissues, has been an area of intense investigation. The major challenge to these approaches has been the inability to vascularize and perfuse the in vitro engineered tissue constructs. Attempts to provide oxygen and nutrients to the cells contained in the biomaterial constructs have had varying degrees of success. The aim of this current study is to develop a three-dimensional (3-D) model of vascularized cardiac tissue to examine the concurrent temporal and spatial regulation of cardiomyogenesis in the context of postnatal de novo vasculogenesis during stem cell cardiac regeneration...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28194187/effect-of-hypoxia-on-the-differentiation-and-the-self-renewal-of-metanephrogenic-mesenchymal-stem-cells
#17
Shaopeng Liu, Nana Song, Jianqiang He, Xiaofang Yu, Jia Guo, Xiaoyan Jiao, Xiaoqiang Ding, Jie Teng
Hypoxia is an important and influential factor in development. The embryonic kidney is exposed to a hypoxic environment throughout its development. The Wnt/β-catenin pathway plays vital roles in the differentiation and self-renewal of metanephrogenic mesenchymal stem cells (MMSCs) from which the kidney is derived. Thus, we hypothesized that hypoxia can regulate the differentiation and pluripotency of MMSCs through the Wnt/β-catenin pathway. To test this hypothesis, MMSCs from rats at embryonic day 18.5 were cultured in normoxic (21% O2) and hypoxic (1% O2) conditions...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28194183/regulation-of-stem-cell-properties-of-m%C3%A3-ller-glia-by-jak-stat-and-mapk-signaling-in-the-mammalian-retina
#18
REVIEW
Krista M Beach, Jianbo Wang, Deborah C Otteson
In humans and other mammals, the neural retina does not spontaneously regenerate, and damage to the retina that kills retinal neurons results in permanent blindness. In contrast to embryonic stem cells, induced pluripotent stem cells, and embryonic/fetal retinal stem cells, Müller glia offer an intrinsic cellular source for regenerative strategies in the retina. Müller glia are radial glial cells within the retina that maintain retinal homeostasis, buffer ion flux associated with phototransduction, and form the blood/retinal barrier within the retina proper...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28193519/thiamine-deficiency-induces-endoplasmic-reticulum-stress-and-oxidative-stress-in-human-neurons-derived-from-induced-pluripotent-stem-cells
#19
Xin Wang, Mei Xu, Jacqueline A Frank, Zun-Ji Ke, Jia Luo
Thiamine (vitamin B1) deficiency (TD) plays a major role in the etiology of Wernicke's encephalopathy (WE) which is a severe neurological disorder. TD induces selective neuronal cell death, neuroinflammation, endoplasmic reticulum (ER) stress and oxidative stress in the brain which are commonly observed in many aging-related neurodegenerative diseases, such as Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD) and progressive supranuclear palsy (PSP). However, the underlying cellular and molecular mechanisms remain unclear...
February 10, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28193206/inducing-goat-pluripotent-stem-cells-with-four-transcription-factor-mrnas-that-activate-endogenous-promoters
#20
Hao Chen, Qisheng Zuo, Yingjie Wang, Jiuzhou Song, Huilin Yang, Yani Zhang, Bichun Li
BACKGROUND: Traditional approaches for generating goat pluripotent stem cells (iPSCs) suffer from complexity and low preparation efficiency. Therefore, we tried to derive goat iPSCs with a new method by transfecting exogenous Oct4, Sox2, Klf4 and c-Myc mRNAs into goat embryonic fibroblasts (GEFs), and explore the mechanisms regarding the transcription regulation of the reprogramming factors in goat iPSCs induction. RESULTS: mRNAs of the four reprogramming factors were transfected into GEFs, and were localized in nucleus with approximately 90% transfection efficiency...
February 13, 2017: BMC Biotechnology
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