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Cardiac stem cells

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https://www.readbyqxmd.com/read/28224242/next-generation-stem-cell-therapy-genetically-modified-mesenchymal-stem-cells-for-cardiac-repair-editorial-to-mesenchymal-stem-cells-with-enos-over-expression-enhance-cardiac-repair-in-rats-with-myocardial-infarction-by-leilei-chen-et-al
#1
EDITORIAL
https://www.readbyqxmd.com/read/28223232/the-versatility-and-paradox-of-gdf-11
#2
REVIEW
A Jamaiyar, W Wan, D M Janota, M K Enrick, W M Chilian, L Yin
In addition to its roles in embryonic development, Growth and Differentiation Factor 11 (GDF 11) has recently drawn much interest about its roles in other processes, such as aging. GDF 11 has been shown to play pivotal roles in the rescue of the proliferative and regenerative capabilities of skeletal muscle, neural stem cells and cardiomyocytes. We would be remiss not to point that some controversy exists regarding the role of GDF 11 in biological processes and whether it will serve as a therapeutic agent. The latest studies have shown that the level of circulating GDF 11 correlates with the outcomes of patients with cardiovascular diseases, cancer and uremia...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28223123/proarrhythmia-liability-assessment-and-the-comprehensive-in-vitro-proarrhythmia-assay-cipa-an-industry-survey-on-current-practice
#3
Simon Authier, Michael K Pugsley, John E Koerner, Bernard Fermini, William S Redfern, Jean-Pierre Valentin, Hugo M Vargas, Derek J Leishman, Krystle Correll, Michael J Curtis
INTRODUCTION: The Safety Pharmacology Society (SPS) has conducted a survey of its membership to identify industry practices related to testing considered in the Comprehensive In vitro Proarrhythmia Assay (CiPA). METHODS: Survey topics included nonclinical approaches to address proarrhythmia issues, conduct of in silico studies, in vitro ion channel testing methods used, drugs used as positive controls during the conduct of cardiac ion channel studies, types of arrhythmias observed in non-clinical studies and use of the anticipated CiPA ion channel assay...
February 18, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28220995/development-of-hydrogels-for-regenerative-engineering
#4
REVIEW
Xiaofei Guan, Meltem Avci-Adali, Emine Alarçin, Hao Cheng, Sara Saheb Kashaf, Yuxiao Li, Aditya Chawla, Hae Lin Jang, Ali Khademhosseini
The aim of regenerative engineering is to restore complex tissues and biological systems through convergence in the fields of advanced biomaterials, stem cell science, and developmental biology. Hydrogels are one of the most attractive biomaterials for regenerative engineering, since they can be engineered into tissue mimetic 3D scaffolds to support cell growth due to their similarity to native extracellular matrix. Advanced nano- and micro-technologies have dramatically increased the ability to control properties and functionalities of hydrogel materials by facilitating biomimetic fabrication of more sophisticated compositions and architectures, thus extending our understanding of cell-matrix interactions at the nanoscale...
February 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28220464/perspectives-and-challenges-of-pluripotent-stem-cells-in-cardiac-arrhythmia-research
#5
REVIEW
Alexander Goedel, Ilaria My, Daniel Sinnecker, Alessandra Moretti
PURPOSE OF REVIEW: The promises of human-induced pluripotent stem cells (hiPSCs) for modeling arrhythmogenic disease, but also for drug discovery and toxicity tests, are straightforward and exciting. However, the full potential of this new technology has not been fully realized yet. The purpose of this review is to provide an overview of the state-of-the-art research in arrhythmogenic disease modeling and drug discovery and an outlook of what can be expected from the second decade of hiPSC-based arrhythmia research...
March 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28219898/sk4-k-channels-are-therapeutic-targets-for-the-treatment-of-cardiac-arrhythmias
#6
Shiraz Haron-Khun, David Weisbrod, Hanna Bueno, Dor Yadin, Joachim Behar, Asher Peretz, Ofer Binah, Edith Hochhauser, Michael Eldar, Yael Yaniv, Michael Arad, Bernard Attali
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a stress-provoked ventricular arrhythmia, which also manifests sinoatrial node (SAN) dysfunction. We recently showed that SK4 calcium-activated potassium channels are important for automaticity of cardiomyocytes derived from human embryonic stem cells. Here SK4 channels were identified in human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from healthy and CPVT2 patients bearing a mutation in calsequestrin 2 (CASQ2-D307H) and in SAN cells from WT and CASQ2-D307H knock-in (KI) mice...
February 20, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28218286/vinculin-variant-m94i-identified-in-sudden-unexplained-nocturnal-death-syndrome-decreases-cardiac-sodium-current
#7
Jianding Cheng, John W Kyle, Brandi Wiedmeyer, Di Lang, Ravi Vaidyanathan, Jonathan C Makielski
Sudden unexplained nocturnal death syndrome (SUNDS) remains an autopsy negative disorder with unclear etiology. Vinculin (VCL) was linked to sudden arrhythmia death in VCL knockout mice prior to the appearance of cardiomyopathy. We hypothesized VCL mutations underlie risk for SUNDS. A rare heterozygous variant VCL-M94I was found in a SUNDS victim who suffered sudden nocturnal tachypnea and lacked pathogenic variants in known arrhythmia-causing genes. VCL was identified to interact with SCN5A in vitro/vivo. The VCL-M94I was co-expressed with the cardiac sodium channel in HEK293 cells and also overexpressed in induced pluripotent stem cells derived cardiomyocytes (iPSCs-CM)...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216140/expression-profiles-of-cancer-stem-cell-markers-cd133-cd44-musashi-1-and-epcam-in-the-cardiac-mucosa-barrett-s-esophagus-early-esophageal-adenocarcinoma-advanced-esophageal-adenocarcinoma-sequence
#8
Anna Mokrowiecka, Lothar Veits, Christina Falkeis, Jacek Musial, Radzislaw Kordek, Mariusz Lochowski, Jozef Kozak, Agnieszka Wierzchniewska-Lawska, Michael Vieth, Ewa Malecka-Panas
INTRODUCTION: Barrett's esophagus (BE), which develops as a result of gastroesophageal reflux disease, is a preneoplastic condition for esophageal adenocarcinoma (EAC). A new hypothesis suggests that cancer is a disease of stem cells, however, their expression and pathways in BE - EAC sequence are not fully elucidated yet. AIMS: We used a panel of putative cancer stem cells markers to identify stem cells in consecutive steps of BE-related cancer progression. METHODS: Immunohistochemistry was performed on formalin-fixed, paraffin-embedded blocks from 58 patients with normal cardiac mucosa (n=5), BE (n=14), early EAC (pT1) from mucosal resection (n=17) and advanced EAC (pT1-T4) from postoperative specimens (n=22)...
December 30, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28203568/mirna-sequence-indicates-that-mesenchymal-stem-cells-and-exosomes-have-similar-mechanism-to-enhance-cardiac-repair
#9
Lianbo Shao, Yu Zhang, Beibei Lan, Juanjuan Wang, Zhiwei Zhang, Lulu Zhang, Pengli Xiao, Qingyou Meng, Yong-Jian Geng, Xi-Yong Yu, Yangxin Li
Mesenchymal stem cells (MSCs) repair infarcted heart through paracrine mechanism. We sought to compare the effectiveness of MSCs and MSC-derived exosomes (MSC-Exo) in repairing infarcted hearts and to identify how MSC-Exo mediated cardiac repair is regulated. In a rat myocardial infarction model, we found that MSC-Exo inhibited cardiac fibrosis, inflammation, and improved cardiac function. The beneficial effects of MSC-Exo were significantly superior compared to that of MSCs. To explore the potential mechanisms underlying MSC-Exo's effects, we performed several in vitro experiments and miRNA-sequence analysis...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28202772/high-throughput-screening-of-tyrosine-kinase-inhibitor-cardiotoxicity-with-human-induced-pluripotent-stem-cells
#10
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/28202059/cardiosphere-derived-cells-do-not-improve-cardiac-function-in-rats-with-cardiac-failure
#11
Taís Hanae Kasai-Brunswick, Andréa Rodrigues da Costa, Raiana Andrade Quintanilha Barbosa, Bruna Farjun, Fernanda Cristina Paccola Mesquita, Danúbia Silva Dos Santos, Isalira Peroba Ramos, Grazielle Suhett, Guilherme Visconde Brasil, Sandro Torrentes da Cunha, José Oscar R Brito, Juliana do Amaral Passipieri, Adriana Bastos Carvalho, Antonio Carlos Campos de Carvalho
BACKGROUND: Heart failure represents an important public health issue due to its high costs and growing incidence worldwide. Evidence showing the regenerative potential of postmitotic heart tissue has suggested the existence of endogenous cardiac stem cells in adult hearts. Cardiosphere-derived cells (CDC) constitute a candidate pool of such cardiac stem cells. Previous studies using acute myocardial infarction (MI) models in rodents demonstrated an improvement in cardiac function after cell therapy with CDC...
February 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28202025/mild-electrical-stimulation-with-heat-shock-guides-differentiation-of-embryonic-stem-cells-into-pdx1-expressing-cells-within-the-definitive-endoderm
#12
Tomoaki Koga, Nobuaki Shiraki, Shuichiro Yano, Mary Ann Suico, Saori Morino-Koga, Takashi Sato, Tsuyoshi Shuto, Shoen Kume, Hirofumi Kai
BACKGROUND: Because of the increasing number of diabetic patients, it is important to generate pancreatic and duodenal homeobox gene 1 (Pdx1)-expressing cells, which are capable of differentiating into pancreatic endocrine β cells. Mild electrical stimulation was reported to modulate the differentiation of ES cells into ectoderm-derived neuronal cells or mesoderm-derived cardiac cells. RESULTS: In this study, we report that mild electrical stimulation with heat shock (MET) potentiates the differentiation of ES cells into definitive endoderm-derived Pdx1-expressing cells...
February 15, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28199972/generation-of-induced-cardiac-progenitor-cells-via-somatic-reprogramming
#13
Jianyong Xu, Wei Lian, Lingyun Li, Zhong Huang
It has been demonstrated that cardiac progenitor cells (CPCs) represent a more effective cell-based therapy for treatment of myocardial infarction. Unfortunately, their therapeutic application is limited by low yield of cell harvesting, declining quality and quantity during the ageing process, and the need for highly invasive heart biopsy. Therefore, there is an emerging interest in generating CPC-like stem cells from somatic cells via somatic reprogramming. This novel approach would provide an unlimited source of stem cells with cardiac differentiation potential...
February 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28197667/discovery-and-progress-of-direct-cardiac-reprogramming
#14
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/28195173/foxa2-identifies-a-cardiac-progenitor-population-with-ventricular-differentiation-potential
#15
Evan Bardot, Damelys Calderon, Francis Santoriello, Songyan Han, Kakit Cheung, Bharati Jadhav, Ingo Burtscher, Stanley Artap, Rajan Jain, Jonathan Epstein, Heiko Lickert, Valerie Gouon-Evans, Andrew J Sharp, Nicole C Dubois
The recent identification of progenitor populations that contribute to the developing heart in a distinct spatial and temporal manner has fundamentally improved our understanding of cardiac development. However, the mechanisms that direct atrial versus ventricular specification remain largely unknown. Here we report the identification of a progenitor population that gives rise primarily to cardiovascular cells of the ventricles and only to few atrial cells (<5%) of the differentiated heart. These progenitors are specified during gastrulation, when they transiently express Foxa2, a gene not previously implicated in cardiac development...
February 14, 2017: Nature Communications
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/28194324/cell-therapies-in-cardiomyopathy-current-status-of-clinical-trials
#17
REVIEW
Ming Hao, Richard Wang, Wen Wang
Because the human heart has limited potential for regeneration, the loss of cardiomyocytes during cardiac myopathy and ischaemic injury can result in heart failure and death. Stem cell therapy has emerged as a promising strategy for the treatment of dead myocardium, directly or indirectly, and seems to offer functional benefits to patients. The ideal candidate donor cell for myocardial reconstitution is a stem-like cell that can be easily obtained, has a robust proliferation capacity and a low risk of tumour formation and immune rejection, differentiates into functionally normal cardiomyocytes, and is suitable for minimally invasive clinical transplantation...
2017: Analytical Cellular Pathology (Amsterdam)
https://www.readbyqxmd.com/read/28191775/noninvasive-assessment-of-an-engineered-bioactive-graft-in-myocardial-infarction-impact-on-cardiac-function-and-scar-healing
#18
Carolina Gálvez-Montón, Ramon Bragós, Carolina Soler-Botija, Idoia Díaz-Güemes, Cristina Prat-Vidal, Verónica Crisóstomo, Francisco M Sánchez-Margallo, Aida Llucià-Valldeperas, Paco Bogónez-Franco, Isaac Perea-Gil, Santiago Roura, Antoni Bayes-Genis
Cardiac tissue engineering, which combines cells and biomaterials, is promising for limiting the sequelae of myocardial infarction (MI). We assessed myocardial function and scar evolution after implanting an engineered bioactive impedance graft (EBIG) in a swine MI model. The EBIG comprises a scaffold of decellularized human pericardium, green fluorescent protein-labeled porcine adipose tissue-derived progenitor cells (pATPCs), and a customized-design electrical impedance spectroscopy (EIS) monitoring system...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28191766/concise-review-mesenchymal-stem-cell-therapy-for-pediatric-disease-perspectives-on-success-and-potential-improvements
#19
Christopher R Nitkin, Tracey L Bonfield
Mesenchymal stem cells (MSCs) represent a potentially revolutionary therapy for a wide variety of pediatric diseases, but the optimal cell-based therapeutics for such diversity have not yet been specified. The published clinical trials for pediatric pulmonary, cardiac, orthopedic, endocrine, neurologic, and hematologic diseases provide evidence that MSCs are indeed efficacious, but the significant heterogeneity in therapeutic approaches between studies raises new questions. The purpose of this review is to stimulate new preclinical and clinical trials to investigate these factors...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28191759/heparin-promotes-cardiac-differentiation-of-human-pluripotent-stem-cells-in-chemically-defined-albumin-free-medium-enabling-consistent-manufacture-of-cardiomyocytes
#20
Yongshun Lin, Kaari L Linask, Barbara Mallon, Kory Johnson, Michael Klein, Jeanette Beers, Wen Xie, Yubin Du, Chengyu Liu, Yinzhi Lai, Jizhong Zou, Mark Haigney, Hushan Yang, Mahendra Rao, Guokai Chen
Cardiomyocytes can be differentiated from human pluripotent stem cells (hPSCs) in defined conditions, but efficient and consistent cardiomyocyte differentiation often requires expensive reagents such as B27 supplement or recombinant albumin. Using a chemically defined albumin-free (E8 basal) medium, we identified heparin as a novel factor that significantly promotes cardiomyocyte differentiation efficiency, and developed an efficient method to differentiate hPSCs into cardiomyocytes. The treatment with heparin helped cardiomyocyte differentiation consistently reach at least 80% purity (up to 95%) from more than 10 different hPSC lines in chemically defined Dulbecco's modified Eagle's medium/F-12-based medium on either Matrigel or defined matrices like vitronectin and Synthemax...
February 2017: Stem Cells Translational Medicine
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