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Cardiac progenitor

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https://www.readbyqxmd.com/read/28210871/repeated-doses-of-cardiac-mesenchymal-cells-are-therapeutically-superior-to-a-single-dose-in-mice-with-old-myocardial-infarction
#1
Yiru Guo, Marcin Wysoczynski, Yibing Nong, Alex Tomlin, Xiaoping Zhu, Anna M Gumpert, Marjan Nasr, Senthikumar Muthusamy, Hong Li, Michael Book, Abdur Khan, Kyung U Hong, Qianhong Li, Roberto Bolli
We have recently demonstrated that repeated administrations of c-kit(POS) cardiac progenitor cells (CPCs) have cumulative beneficial effects in rats with old myocardial infarction (MI), resulting in markedly greater improvement in left ventricular (LV) function compared with a single administration. To determine whether this paradigm applies to other species and cell types, mice with a 3-week-old MI received one or three doses of cardiac mesenchymal cells (CMCs), a novel cell type that we have recently described...
March 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28209789/exosomal-micrornas-released-by-pediatric-cardiac-progenitor-cells
#2
EDITORIAL
Ke Xiao, Thomas Thum
No abstract text is available yet for this article.
February 17, 2017: Circulation Research
https://www.readbyqxmd.com/read/28199972/generation-of-induced-cardiac-progenitor-cells-via-somatic-reprogramming
#3
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/28195173/foxa2-identifies-a-cardiac-progenitor-population-with-ventricular-differentiation-potential
#4
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/28191775/noninvasive-assessment-of-an-engineered-bioactive-graft-in-myocardial-infarction-impact-on-cardiac-function-and-scar-healing
#5
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/28191018/thymosin-%C3%AE-4-improves-differentiation-and-vascularization-of-ehts
#6
Tilman Ziegler, Rabea Hinkel, Andrea Stöhr, Thomas Eschenhagen, Karl-Ludwig Laugwitz, Ferdinand le Noble, Robert David, Arne Hansen, Christian Kupatt
Induced pluripotent stem cells (iPSC) constitute a powerful tool to study cardiac physiology and represents a promising treatment strategy to tackle cardiac disease. However, iPSCs remain relatively immature after differentiation. Additionally, engineered heart tissue (EHT) has been investigated as a therapy option in preclinical disease models with promising results, although their vascularization and functionality leave room for improvement. Thymosin β4 (Tβ4) has been shown to promote the differentiation of progenitor cell lines to cardiomyocytes while it also induces angiogenic sprouting and vascular maturation...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28188262/mapk-signaling-pathways-and-hdac3-activity-are-disrupted-during-emerin-null-myogenic-progenitor-differentiation
#7
Carol M Collins, Joseph Ellis, James M Holaska
Mutations in the gene encoding emerin cause Emery-Dreifuss muscular dystrophy (EDMD). Emerin is an integral inner nuclear membrane protein and a component of the nuclear lamina. EDMD is characterized by skeletal muscle wasting, cardiac conduction defects and tendon contractures. The failure to regenerate skeletal muscle is predicted to contribute to the skeletal muscle pathology of EDMD. We hypothesize muscle regeneration defects are caused by impaired muscle stem cell differentiation. Myogenic progenitors derived from emerin-null mice were used to confirm their impaired differentiation and analyze selected myogenic molecular pathways...
February 10, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28167794/gata4-potentiates-second-heart-field-proliferation-and-hedgehog-signaling-for-cardiac-septation
#8
Lun Zhou, Jielin Liu, Menglan Xiang, Patrick Olson, Alexander Guzzetta, Ke Zhang, Ivan P Moskowitz, Linglin Xie
GATA4, an essential cardiogenic transcription factor, provides a model for dominant transcription factor mutations in human disease. Dominant GATA4 mutations cause congenital heart disease (CHD), specifically atrial and atrioventricular septal defects (ASDs and AVSDs). We found that second heart field (SHF)-specific Gata4 heterozygote embryos recapitulated the AVSDs observed in germline Gata4 heterozygote embryos. A proliferation defect of SHF atrial septum progenitors and hypoplasia of the dorsal mesenchymal protrusion, rather than anlage of the atrioventricular septum, were observed in this model...
February 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28165052/light-sheet-fluorescence-imaging-to-localize-cardiac-lineage-and-protein-distribution
#9
Yichen Ding, Juhyun Lee, Jianguo Ma, Kevin Sung, Tomohiro Yokota, Neha Singh, Mojdeh Dooraghi, Parinaz Abiri, Yibin Wang, Rajan P Kulkarni, Atsushi Nakano, Thao P Nguyen, Peng Fei, Tzung K Hsiai
Light-sheet fluorescence microscopy (LSFM) serves to advance developmental research and regenerative medicine. Coupled with the paralleled advances in fluorescence-friendly tissue clearing technique, our cardiac LSFM enables dual-sided illumination to rapidly uncover the architecture of murine hearts over 10 by 10 by 10 mm(3) in volume; thereby allowing for localizing progenitor differentiation to the cardiomyocyte lineage and AAV9-mediated expression of exogenous transmembrane potassium channels with high contrast and resolution...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163043/p53-modulates-the-fate-of-cardiac-progenitor-cells-ex-vivo-and-in-the-diabetic-heart-in-vivo
#10
Ramaswamy Kannappan, Alex Matsuda, João Ferreira-Martins, Eric Zhang, Giorgia Palano, Anna Czarna, Mauricio Castro Cabral-Da-Silva, Adriana Bastos-Carvalho, Fumihiro Sanada, Noriko Ide, Marcello Rota, Maria A Blasco, Manuel Serrano, Piero Anversa, Annarosa Leri
p53 is an important modulator of stem cell fate, but its role in cardiac progenitor cells (CPCs) is unknown. Here, we tested the effects of a single extra-copy of p53 on the function of CPCs in the presence of oxidative stress mediated by doxorubicin in vitro and type-1 diabetes in vivo. CPCs were obtained from super-p53 transgenic mice (p53-tg), in which the additional allele is regulated in a manner similar to the endogenous protein. Old CPCs with increased p53 dosage showed a superior ability to sustain oxidative stress, repair DNA damage and restore cell division...
January 31, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28139736/young-bone-marrow-sca-1-stem-cells-rejuvenate-the-aged-heart-and-improve-function-after-injury-through-pdgfr%C3%AE-akt-pathway
#11
Shu-Hong Li, Lu Sun, Lei Yang, Jiao Li, Zhengbo Shao, Guo-Qing Du, Jun Wu, Richard D Weisel, Ren-Ke Li
Bone marrow (BM) reconstitution with young BM cells in aged recipients restores the functionality of cardiac resident BM-derived progenitors. This study investigated the cell type primarily responsible for this effect. We reconstituted old mice with BM cells from young or old mice and found that the number of stem cell antigen 1 (Sca-1) cells homing to the heart was significantly greater in young than old chimeras. We then reconstituted old mice with young BM Sca-1(+) or Sca-1(-) cells. We found that Sca-1 cells repopulated the recipient BM and homed to the heart...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28131704/notch3-deficiency-impairs-coronary-microvascular-maturation-and-reduces-cardiac-recovery-after-myocardial-ischemia
#12
Yong-Kang Tao, Heng Zeng, Guo-Qiang Zhang, Sean T Chen, Xue-Jiao Xie, Xiaochen He, Shuo Wang, Hongyan Wen, Jian-Xiong Chen
RATIONALE: Vascular maturation plays an important role in wound repair post-myocardial infarction (MI). The Notch3 is critical for pericyte recruitment and vascular maturation during embryonic development. OBJECTIVE: This study is to test whether Notch3 deficiency impairs vascular maturation and blunts cardiac functional recovery post-MI. APPROACH AND RESULTS: Wild type (WT) and Notch3 knockout (Notch3KO) mice were subjected to MI by the ligation of left anterior descending coronary artery (LAD)...
January 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28125926/coordinated-proliferation-and-differentiation-of-human-ips-cell-derived-cardiac-progenitor-cells-depends-on-bmp-signaling-regulation-by-gremlin-2
#13
Jeffery Bylund, Cassandra P Awgulewitsch, Linh T Trinh, David T Paik, Christopher Jetter, Rajneesh Jha, Jianhua Zhang, Kristof Nolan, Chunhui Xu, Thomas Thompson, Timothy J Kamp, Antonis K Hatzopoulos
Heart development depends on coordinated proliferation and differentiation of cardiac progenitor cells, but how the two processes are synchronized is not well understood. Here, we show that the secreted BMP antagonist GREMLIN2 (GREM2) is induced in cardiac progenitor cells shortly after cardiac mesoderm specification. GREM2 expression follows cardiac lineage differentiation independently of the differentiation protocol used, or the origin of human pluripotent stem cells, suggesting GREM2 is linked to cardiogenesis...
January 26, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28123351/involvement-of-rictor-mtorc2-in-cardiomyocyte-differentiation-of-mouse-embryonic-stem-cells-in-vitro
#14
Bei Zheng, Jiadan Wang, Leilei Tang, Chao Tan, Zhe Zhao, Yi Xiao, Renshan Ge, Danyan Zhu
Rictor is a key regulatory/structural subunit of the mammalian target of rapamycin complex 2 (mTORC2) and is required for phosphorylation of Akt at serine 473. It plays an important role in cell survival, actin cytoskeleton organization and other processes in embryogenesis. However, the role of Rictor/mTORC2 in the embryonic cardiac differentiation has been uncovered. In the present study, we examined a possible link between Rictor expression and cardiomyocyte differentiation of the mouse embryonic stem (mES) cells...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28122306/hydroxysafflor-yellow-a-promotes-neovascularization-and-cardiac-function-recovery-through-ho-1-vegf-a-sdf-1%C3%AE-cascade
#15
Guo Wei, Ying Yin, Jialin Duan, Chao Guo, Yanrong Zhu, Yanhua Wang, Miaomiao Xi, Aidong Wen
AIM: The present study was to investigate the proangiogenic and cardioprotective effects of hydroxysafflor yellow A (HSYA) against myocardial infarction (MI) injury and the underlying mechanisms. METHODS: MI model was induced by ligation of the left coronary artery in normal and heme oxygenase-1 (HO-1) knockout mice and the ones receiving vascular endothelial growth factor-A (VEGF-A) or stromal cell-derived factor-1α (SDF-1α) antagonists. They were treated with three doses or single dose of HSYA for 28days...
January 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28122228/temporally-distinct-six2-positive-second-heart-field-progenitors-regulate-mammalian-heart-development-and-disease
#16
Zhengfang Zhou, Jingying Wang, Chaoshe Guo, Weiting Chang, Jian Zhuang, Ping Zhu, Xue Li
The embryonic process of forming a complex structure such as the heart remains poorly understood. Here, we show that Six2 marks a dynamic subset of second heart field progenitors. Six2-positive (Six2(+)) progenitors are rapidly recruited and assigned, and their descendants are allocated successively to regions of the heart from the right ventricle (RV) to the pulmonary trunk. Global ablation of Six2(+) progenitors resulted in RV hypoplasia and pulmonary atresia. An early stage-specific ablation of a small subset of Six2(+) progenitors did not cause any apparent structural defect at birth but rather resulted in adult-onset cardiac hypertrophy and dysfunction...
January 24, 2017: Cell Reports
https://www.readbyqxmd.com/read/28120944/identification-of-cardiac-progenitors-that-survive-in-the-ischemic-human-heart-after-ventricular-myocyte-death
#17
Mariko Omatsu-Kanbe, Nozomi Nozuchi, Yuka Nishino, Ken-Ichi Mukaisho, Hiroyuki Sugihara, Hiroshi Matsuura
Atypically-shaped cardiomyocytes (ACMs) are beating heart cells identified in the cultures of cardiomyocyte-removed fractions obtained from adult mouse hearts. Since ACMs spontaneously develop into beating cells in the absence of hormones or chemicals, these cells are likely to be a type of cardiac progenitors rather than stem cells. "Native ACMs" are found as small interstitial cells among ventricular myocytes that co-express cellular prion protein (PrP) and cardiac troponin T (cTnT) in mouse and human heart tissues...
January 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28118945/ro52-autoantibodies-arise-from-self-reactive-progenitors-in-a-mother-of-a-child-with-neonatal-lupus
#18
Joanne H Reed, Miroslaw K Gorny, Liuzhe Li, Timothy Cardozo, Jill P Buyon, Robert M Clancy
The detection of cardiac conduction defects in an 18-24 week old foetus in the absence of structural abnormalities predicts with near certainty the presence of autoantibodies against 60kD and 52kD SSA/Ro in the mother regardless of her health status. Previous studies have emphasized these autoantibodies as key mediators of tissue injury. The aim of this study was to focus on the anti-Ro52 response to determine whether these autoantibodies originate from progenitors that are inherently self-reactive or from B-cells that acquire self-reactivity during an immune response...
January 21, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28117403/minimizing-the-risk-of-allo-sensitization-to-optimize-the-benefit-of-allogeneic-cardiac-derived-stem-progenitor-cells
#19
Hocine R Hocine, Hicham E L Costa, Noemie Dam, Jerome Giustiniani, Itziar Palacios, Pascale Loiseau, Armand Benssusan, Luis R Borlado, Dominique Charron, Caroline Suberbielle, Nabila Jabrane-Ferrat, Reem Al-Daccak
Allogeneic human cardiac-derived stem/progenitor cells (hCPC) are currently under clinical investigation for cardiac repair. While cellular immune response against allogeneic hCPC could be part of their beneficial-paracrine effects, their humoral immune response remains largely unexplored. Donor-specific HLA antibodies (DSA-HLA-I/DSA-HLA-II), primary elements of antibody-mediated allograft injury, might present an unidentified risk to allogeneic hCPC therapy. Here we established that the binding strength of anti-HLA monoclonal antibodies delineates hCPC proneness to antibody-mediated injury...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28115549/a-discrete-in-continuous-mathematical-model-of-cardiac-progenitor-cells-formation-and-growth-as-spheroid-clusters-cardiospheres
#20
Ezio Di Costanzo, Alessandro Giacomello, Elisa Messina, Roberto Natalini, Giuseppe Pontrelli, Fabrizio Rossi, Robert Smits, Monika Twarogowska
We propose a discrete in continuous mathematical model describing the in vitro growth process of biophsy-derived mammalian cardiac progenitor cells growing as clusters in the form of spheres (Cardiospheres). The approach is hybrid: discrete at cellular scale and continuous at molecular level. In the present model, cells are subject to the self-organizing collective dynamics mechanism and, additionally, they can proliferate and differentiate, also depending on stochastic processes The two latter processes are triggered and regulated by chemical signals present in the environment...
January 23, 2017: Mathematical Medicine and Biology: a Journal of the IMA
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