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Cardiac progenitor

Wasay M Shaikh Qureshi, Lianjie Miao, David Shieh, Jingjing Li, Yangyang Lu, Saiyang Hu, Margarida Barroso, Joseph Mazurkiewicz, Mingfu Wu
Single clonal tracing and analysis at the whole-heart level can determine cardiac progenitor cell behavior and differentiation during cardiac development, and allow for the study of the cellular and molecular basis of normal and abnormal cardiac morphogenesis. Recent emerging technologies of retrospective single clonal analyses make the study of cardiac morphogenesis at single cell resolution feasible. However, tissue opacity and light scattering of the heart as imaging depth is increased hinder whole-heart imaging at single cell resolution...
October 7, 2016: Journal of Visualized Experiments: JoVE
Hsing-Hua Tsai, Chin-Pu Lin, Yi-Hui Lin, Chih-Chin Hsu, Jong-Shyan Wang
PURPOSE: Exercise training improves endothelium-dependent vasodilation, whereas hypoxic stress causes vascular endothelial dysfunction. Monocyte-derived endothelial progenitor cells (Mon-EPCs) contribute to vascular repair process by differentiating into endothelial cells. This study investigates how high-intensity interval (HIT) and moderate-intensity continuous (MCT) exercise training affect circulating Mon-EPC levels and EPC functionality under hypoxic condition. METHODS: Sixty healthy sedentary males were randomized to engage in either HIT (3-min intervals at 40 and 80 % VO2max for five repetitions, n = 20) or MCT (sustained 60 % VO2max, n = 20) for 30 min/day, 5 days/week for 6 weeks, or to a control group (CTL) that did not received exercise intervention (n = 20)...
October 19, 2016: European Journal of Applied Physiology
Martino Deidda, Rosalinda Madonna, Ruggiero Mango, Pasquale Pagliaro, Pier P Bassareo, Lucia Cugusi, Silvio Romano, Maria Penco, Francesco Romeo, Giuseppe Mercuro
Despite advances in supportive and protective therapy for myocardial function, heart failure caused by various clinical conditions, including cardiomyopathy due to antineoplastic therapy, remains a major cause of morbidity and mortality. Because of the limitations associated with current therapies, investigators have been searching for alternative treatments that can effectively repair the damaged heart and permanently restore its function. Damage to the heart can result from both traditional chemotherapeutic agents, such as anthracyclines, and new targeted therapies, such as trastuzumab...
May 2016: Journal of Cardiovascular Medicine
Salim S Hayek, Yuri Klyachkin, Ahmed Asfour, Nima Ghasemzadeh, Mosaab Awad, Iraj Hesaroieh, Hina Ahmed, Brandon Gray, Jinhee Kim, Edmund K Waller, Arshed A Quyyumi, Ahmed K Abdel-Latif
: : Bone marrow-derived progenitor cells are mobilized into the peripheral blood after acute myocardial injury and in chronic ischemic heart disease. However, the mechanisms responsible for this mobilization are poorly understood. We examined the relationship between plasma levels of bioactive lipids and number of circulating progenitor cells (CPCs) in patients (N = 437) undergoing elective or emergent cardiac catheterization. Plasma levels of sphingosine-1 phosphate (S1P) and ceramide-1 phosphate (C1P) were quantified using mass spectrometry...
October 14, 2016: Stem Cells Translational Medicine
Chiara Cencioni, Sandra Atlante, Matteo Savoia, Fabio Martelli, Antonella Farsetti, Maurizio C Capogrossi, Andreas M Zeiher, Carlo Gaetano, Francesco Spallotta
Organ-specific mesenchymal cells naturally reside in the stroma, where they are exposed to some environmental variables affecting their biology and functions. Risk factors such as diabetes or aging influence their adaptive response. In these cases, permanent epigenetic modifications may be introduced in the cells with important consequences on their local homeostatic activity and therapeutic potential. Numerous results suggest that mesenchymal cells, virtually present in every organ, may contribute to tissue regeneration mostly by paracrine mechanisms...
October 11, 2016: Pharmacology & Therapeutics
Kristin Wenzel, Rasmita Samal, Elke Hammer, Vishnu M Dhople, Stefan Gross, Uwe Völker, Stephan B Felix, Stephanie Könemann
Cardiac progenitor cells (CPCs) trigger regenerative processes via paracrine mechanisms in response to changes in their environment. In the present study we explored alterations in the secretory activity of CPCs induced by raised aldosterone levels symptomatic for heart failure. The cytokine profile of the supernatant of CPCs that were treated with the mineralocorticoid showed an induction of interleukin-6 secretion. Mass spectrometric analyses revealed an increase in the abundance of secreted proteins associated with regeneration and cell migration like gelsolin and galectin-1...
October 11, 2016: Molecular and Cellular Endocrinology
Matteo Ciocci, Egidio Iorio, Felicia Carotenuto, Haneen A Khashoggi, Francesca Nanni, Sonia Melino
The improvement of solubility and/or dissolution rate of poorly soluble natural compounds is an ideal strategy to make them optimal candidates as new potential drugs. Accordingly, the allyl sulfur compounds and omega-3 fatty acids are natural hydrophobic compounds that exhibit two important combined properties: cardiovascular protection and antitumor activity. Here, we have synthesized and characterized a novel formulation of diallyl disulfide (DADS) and α-linolenic acid (ALA) as protein-nanoemulsions (BAD-NEs), using ultrasounds...
October 12, 2016: Oncotarget
Maurizio Pesce, Elisa Messina, Isotta Chimenti, Antonio Paolo Beltrami
The life-long story of the heart starts concomitantly with primary differentiation events occurring in multipotent progenitors located in the so called heart tube. This initially tubular structure starts a looping process which leads to formation of the final four chambered heart with a primary contribution of geometric and position-associated cell sensing. While this establishes the correct patterning of the final cardiac structure, it also feedbacks to fundamental cellular machineries controlling proliferation and differentiation, thus ensuring a coordinated restriction of cell growth and a myocyte terminal differentiation...
October 13, 2016: Stem Cells and Development
Ji Hye Park, Sung Hyun Choi, Hyungtae Kim, Seung Taek Ji, Woong Bi Jang, Jae Ho Kim, Sang Hong Baek, Sang Mo Kwon
Doxorubicin (DOXO) is widely used to treat solid tumors. However, its clinical use is limited by side effects including serious cardiotoxicity due to cardiomyocyte damage. Resident cardiac progenitor cells (hCPCs) act as key regulators of homeostasis in myocardial cells. However, little is known about the function of hCPCs in DOXO-induced cardiotoxicity. In this study, we found that DOXO-mediated hCPC toxicity is closely related to calcium-related autophagy signaling and was significantly attenuated by blocking mTOR signaling in human hCPCs...
October 9, 2016: International Journal of Molecular Sciences
Arianna Mauretti, Noortje A M Bax, Mieke H van Marion, Marie José Goumans, Cecilia Sahlgren, Carlijn V C Bouten
For emerging cardiac regeneration strategies, it is essential to know if and how cardiac stem cells sense and respond to the mechanical stimuli provided by their environment in the beating heart. Here, we study the response to cyclic strain of undifferentiated and predifferentiated human cardiomyocyte progenitor cells (CMPCs), as well as the formation and activation of the cellular structures involved in mechanosensing, that we termed 'mechanosome'. Once verified that the applied uniaxial cyclic strain (10%, 0...
September 12, 2016: Integrative Biology: Quantitative Biosciences From Nano to Macro
Elena Cambria, Julia Steiger, Julia Günter, Annina Bopp, Petra Wolint, Simon P Hoerstrup, Maximilian Y Emmert
Cardiac stem cell therapy holds great potential to prompt myocardial regeneration in patients with ischemic heart disease. The selection of the most suitable cell type is pivotal for its successful application. Various cell types, including crude bone marrow mononuclear cells, skeletal myoblast, and hematopoietic and endothelial progenitors, have already advanced into the clinical arena based on promising results from different experimental and preclinical studies. However, most of these so-called first-generation cell types have failed to fully emulate the promising preclinical data in clinical trials, resulting in heterogeneous outcomes and a critical lack of translation...
July 2016: Transfusion Medicine and Hemotherapy
June Baik, Alessandro Magli, Naoyuki Tahara, Scott A Swanson, Naoko Koyano-Nakagawa, Luciene Borges, Ron Stewart, Daniel J Garry, Yasuhiko Kawakami, James A Thomson, Rita C R Perlingeiro
Mechanisms of haematopoietic and cardiac patterning remain poorly understood. Here we show that the BMP and Wnt signalling pathways are integrated in an endoglin (Eng)-dependent manner in cardiac and haematopoietic lineage specification. Eng is expressed in early mesoderm and marks both haematopoietic and cardiac progenitors. In the absence of Eng, yolk sacs inappropriately express the cardiac marker, Nkx2.5. Conversely, high levels of Eng in vitro and in vivo increase haematopoiesis and inhibit cardiogenesis...
October 7, 2016: Nature Communications
Elena Piegari, Rosa Russo, Donato Cappetta, Grazia Esposito, Konrad Urbanek, Carmela Dell'Aversana, Lucia Altucci, Liberato Berrino, Francesco Rossi, Antonella De Angelis
New strategies to prevent and early detect the cardiotoxic effects of the anticancer drug doxorubicin (DOXO) are required. MicroRNAs emerged as potential diagnostic, therapeutic and prognostic approaches in cardiovascular diseases. MiR-34a has a role in cardiac dysfunction and ageing and is involved in several cellular processes associated with DOXO cardiotoxicity. Our in vitro and in vivo results indicated that after DOXO exposure the levels of miR-34a are enhanced in cardiac cells, including Cardiac Progenitor Cells (CPCs)...
September 20, 2016: Oncotarget
Gordana Vunjak-Novakovic
Tissue-engineered regeneration of a failing human heart remains a major challenge, while cardiovascular disease continues to take more lives than all cancers combined. Much has been learned from the basic and clinical studies, with the most interesting developments happening at the interfaces of disciplines. This seems to be the right time to step back and rethink the evolving paradigm of tissue engineering, and to reflect about the most promising directions to take. We clearly need new therapeutic modalities that are effective and yet simple enough to be practical, and the field is looking into the therapeutic potential of stem-progenitor cells, cardiac and vascular, that are enabled by bioactive factors and functionalized biomaterials...
September 6, 2016: Journal of Thoracic and Cardiovascular Surgery
Aida Llucià-Valldeperas, Carolina Soler-Botija, Carolina Gálvez-Montón, Santiago Roura, Cristina Prat-Vidal, Isaac Perea-Gil, Benjamin Sanchez, Ramon Bragos, Gordana Vunjak-Novakovic, Antoni Bayes-Genis
: : Cardiac cells are subjected to mechanical and electrical forces, which regulate gene expression and cellular function. Therefore, in vitro electromechanical stimuli could benefit further integration of therapeutic cells into the myocardium. Our goals were (a) to study the viability of a tissue-engineered construct with cardiac adipose tissue-derived progenitor cells (cardiac ATDPCs) and (b) to examine the effect of electromechanically stimulated cardiac ATDPCs within a myocardial infarction (MI) model in mice for the first time...
September 29, 2016: Stem Cells Translational Medicine
Beom Seok Kim, Chang-Hee Lee, Gyeong-Eon Chang, Eunji Cheong, Injae Shin
Sirtuin 1 (SIRT1) is known to suppress differentiation of pluripotent/multipotent cells and neural progenitor cells into neurons by blocking activation of transcription factors critical for neurogenesis. EX-527 is a highly selective and potent inhibitor against SIRT1 and has been used as a chemical probe that modulates SIRT1-associated biological processes. However, the effect of EX-527 on neuronal differentiation in pluripotent cells has not been well elucidated. Here, we report an examination of EX-527 effects on neurogenesis of pluripotent P19 cells...
September 29, 2016: Scientific Reports
Amritha Yellamilli, Jop H van Berlo
The heart has a limited ability to regenerate. It is important to identify therapeutic strategies that enhance cardiac regeneration in order to replace cardiomyocytes lost during the progression of heart failure. Cardiac progenitor cells are interesting targets for new regenerative therapies because they are self-renewing, multipotent cells located in the heart. Cardiac side population cells (cSPCs), the first cardiac progenitor cells identified in the adult heart, have the ability to differentiate into cardiomyocytes, endothelial cells, smooth muscle cells, and fibroblasts...
2016: Frontiers in Cell and Developmental Biology
Zhongjian Cheng, Venkata Garikipati, Emily Nickoloff, Chunlin Wang, David J Polhemus, Jibin Zhou, Cynthia Benedict, Mohsin Khan, Suresh K Verma, Joseph E Rabinowitz, David Lefer, Raj Kishore
BACKGROUND: -Bone marrow cell-based treatment for critical limb ischemia (CLI) in diabetic patients yielded a modest therapeutic effect due to cell dysfunction. Therefore, approaches that improve diabetic stem/progenitor cell functions may provide therapeutic benefits. Here, we tested the hypotheses that restoration of hydrogen sulfide (H2S) production in diabetic bone marrow cells (BMCs) improves their reparative capacities. METHODS: -Mouse BMCs were isolated by density-gradient centrifugation...
September 22, 2016: Circulation
Tomomi Kotoku, Koji Kosaka, Miki Nishio, Yasumasa Ishida, Masashi Kawaichi, Eishou Matsuda
The molecular mechanisms underlying mesodermal and cardiac specification from embryonic stem cells (ESCs) are not fully understood. Here, we showed that the BTB domain-containing zinc finger protein CIBZ is expressed in mouse ESCs but is dramatically downregulated during ESC differentiation. CIBZ deletion in ESCs induced specification toward mesoderm phenotypes and their differentiation into cardiomyocytes, whereas overexpression of CIBZ delayed these processes. During ESC differentiation, CIBZ loss-and-gain-of-function data indicate that CIBZ negatively regulates the expressions of Brachyury (T) and Mesp1, the key transcriptional factors responsible for the specification of mammalian mesoderm and cardiac progenitors, respectively...
2016: Scientific Reports
Xin Chen, Tushar Chakravarty, Yiqiang Zhang, Xiaojin Li, Jiang F Zhong, Charles Wang
The molecular basis underlying the dedifferentiation of mammalian adult cardiomyocytes (ACMs) into myocyte-derived cardiac progenitor cells (mCPCs) during cardiac tissue regeneration is poorly understood. We present data integrating single-cell transcriptome and whole-genome DNA methylome analyses of mouse mCPCs to understand the epigenomic reprogramming governing their intrinsic cellular plasticity. Compared to parental cardiomyocytes, mCPCs display epigenomic reprogramming with many differentially-methylated regions, both hypermethylated and hypomethylated, across the entire genome...
2016: Scientific Data
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