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https://www.readbyqxmd.com/read/28229420/noninvasive-assessment-of-cell-fate-and-biology-in-transplanted-mesenchymal-stem-cells
#1
Federico Franchi, Martin Rodriguez-Porcel
Recently, molecular imaging has become a conditio sine qua non for cell-based regenerative medicine. Developments in molecular imaging techniques, such as reporter gene technology, have increasingly enabled the noninvasive assessment of the fate and biology of cells after cardiovascular applications. In this context, bioluminescence imaging is the most commonly used imaging modality in small animal models of preclinical studies. Here, we present a detailed protocol of a reporter gene imaging approach for monitoring the viability and biology of Mesenchymal Stem Cells transplanted in a mouse model of myocardial ischemia reperfusion injury...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28229407/assessment-of-energy-metabolic-changes-in-adipose-tissue-derived-stem-cells
#2
Ghazaleh Hajmousa, Martin C Harmsen
Adipose tissue-derived stem cells (ADSC) are promising candidates for therapeutic applications in cardiovascular regenerative medicine. By definition, the phenotype ADSCs, e.g., the ubiquitous secretion of growth factors, cytokines, and extracellular matrix components is not met in vivo, which renders ADSC a culture "artefact." The medium constituents therefore impact the efficacy of ADSC. Little attention has been paid to the energy source in medium, i.e., glucose, which feeds the cell's power plants: mitochondria...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28223232/the-versatility-and-paradox-of-gdf-11
#3
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/28223221/the-atheroma-plaque-secretome-stimulates-the-mobilization-of-endothelial-progenitor-cells-ex-vivo
#4
Francisco M Vega, Violette Gautier, Cecilia M Fernandez-Ponce, Mª Jesús Extremera, A F Maarten Altelaar, Jaime Millan, Juan C Tellez, Jose A Hernandez-Campos, Rosario Conejero, Jorge Bolivar, Ricardo Pardal, Francisco J Garcia-Cózar, Enrique Aguado, Albert J R Heck, Mª Carmen Duran-Ruiz
Endothelial progenitor cells (EPCs) constitute a promising alternative in cardiovascular regenerative medicine due to their assigned role in angiogenesis and vascular repair. In response to injury, EPCs promote vascular remodeling by replacement of damaged endothelial cells and/or by secreting angiogenic factors over the damaged tissue. Nevertheless, such mechanisms need to be further characterized. In the current approach we have evaluated the initial response of early EPCs (eEPCs) from healthy individuals after direct contact with the factors released by carotid arteries complicated with atherosclerotic plaques (AP), in order to understand the mechanisms underlying the neovascularization and remodeling properties assigned to these cells...
February 18, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28209124/rna-seq-and-metabolomic-analyses-of-akt1-mediated-muscle-growth-reveals-regulation-of-regenerative-pathways-and-changes-in-the-muscle-secretome
#5
Chia-Ling Wu, Yoshinori Satomi, Kenneth Walsh
BACKGROUND: Skeletal muscle is a major regulator of systemic metabolism as it serves as the major site for glucose disposal and the main reservoir for amino acids. With aging, cachexia, starvation, and myositis, there is a preferential loss of fast glycolytic muscle fibers. We previously reported a mouse model in which a constitutively-active Akt transgene is induced to express in a subset of muscle groups leading to the hypertrophy of type IIb myofibers with an accompanying increase in strength...
February 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28208601/surgical-neurostimulation-for-spinal-cord-injury
#6
REVIEW
Aswin Chari, Ian D Hentall, Marios C Papadopoulos, Erlick A C Pereira
Traumatic spinal cord injury (SCI) is a devastating neurological condition characterized by a constellation of symptoms including paralysis, paraesthesia, pain, cardiovascular, bladder, bowel and sexual dysfunction. Current treatment for SCI involves acute resuscitation, aggressive rehabilitation and symptomatic treatment for complications. Despite the progress in scientific understanding, regenerative therapies are lacking. In this review, we outline the current state and future potential of invasive and non-invasive neuromodulation strategies including deep brain stimulation (DBS), spinal cord stimulation (SCS), motor cortex stimulation (MCS), transcutaneous direct current stimulation (tDCS) and repetitive transcranial magnetic stimulation (rTMS) in the context of SCI...
February 10, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28207177/quaking-is-a-key-regulator-of-endothelial-cell-differentiation-neovascularization-and-angiogenesis
#7
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/28187777/gmp-conformant-on-site-manufacturing-of-a-cd133-stem-cell-product-for-cardiovascular-regeneration
#8
Anna Skorska, Paula Müller, Ralf Gaebel, Jana Große, Heiko Lemcke, Cornelia A Lux, Manuela Bastian, Frauke Hausburg, Nicole Zarniko, Sandra Bubritzki, Ulrike Ruch, Gudrun Tiedemann, Robert David, Gustav Steinhoff
BACKGROUND: CD133(+) stem cells represent a promising subpopulation for innovative cell-based therapies in cardiovascular regeneration. Several clinical trials have shown remarkable beneficial effects following their intramyocardial transplantation. Yet, the purification of CD133(+) stem cells is typically performed in centralized clean room facilities using semi-automatic manufacturing processes based on magnetic cell sorting (MACS®). However, this requires time-consuming and cost-intensive logistics...
February 10, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28185191/a-coupled-approach-utilizing-immunohistochemistry-and-immunocytochemistry-to-visualize-cellular-lipophagy
#9
Aishwarya Sathyanarayan
Aberrant liver function as a consequence of excessive fat accumulation as observed in non-alcoholic fatty liver disease (NAFLD) is responsible for a plethora of disorders leading to the incidence of cardiovascular diseases. In most cases, the cause of NAFLD is not completely understood but has been primarily linked to the occurrence of insulin resistance that often accompanies obesity, dyslipidemia, and Type 2 Diabetes. Hence, it is of paramount importance to elucidate the molecular mechanisms of lipid metabolism underlying the pathogenesis of NAFLD and its comorbidities...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28169191/stem-cell-technology-in-cardiac-regeneration-a-pluripotent-stem-cell-promise
#10
REVIEW
Robin Duelen, Maurilio Sampaolesi
Despite advances in cardiovascular biology and medical therapy, heart disorders are the leading cause of death worldwide. Cell-based regenerative therapies become a promising treatment for patients affected by heart failure, but also underline the need for reproducible results in preclinical and clinical studies for safety and efficacy. Enthusiasm has been tempered by poor engraftment, survival and differentiation of the injected adult stem cells. The crucial challenge is identification and selection of the most suitable stem cell type for cardiac regenerative medicine...
January 27, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28154736/optimizing-stem-cells-for-cardiac-repair-current-status-and-new-frontiers-in-regenerative-cardiology
#11
REVIEW
Shant Der Sarkissian, Thierry Lévesque, Nicolas Noiseux
Cell therapy has the potential to improve healing of ischemic heart, repopulate injured myocardium and restore cardiac function. The tremendous hope and potential of stem cell therapy is well understood, yet recent trials involving cell therapy for cardiovascular diseases have yielded mixed results with inconsistent data thereby readdressing controversies and unresolved questions regarding stem cell efficacy for ischemic cardiac disease treatment. These controversies are believed to arise by the lack of uniformity of the clinical trial methodologies, uncertainty regarding the underlying reparative mechanisms of stem cells, questions concerning the most appropriate cell population to use, the proper delivery method and timing in relation to the moment of infarction, as well as the poor stem cell survival and engraftment especially in a diseased microenvironment which is collectively acknowledged as a major hindrance to any form of cell therapy...
January 26, 2017: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28145902/redirecting-cardiac-growth-mechanisms-for-therapeutic-regeneration
#12
REVIEW
Ravi Karra, Kenneth D Poss
Heart failure is a major source of morbidity and mortality. Replacing lost myocardium with new tissue is a major goal of regenerative medicine. Unlike adult mammals, zebrafish and neonatal mice are capable of heart regeneration following cardiac injury. In both contexts, the regenerative program echoes molecular and cellular events that occur during cardiac development and morphogenesis, notably muscle creation through division of cardiomyocytes. Based on studies over the past decade, it is now accepted that the adult mammalian heart undergoes a low grade of cardiomyocyte turnover...
February 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28139119/proteomic-analysis-of-human-pluripotent-stem-cell-cardiomyogenesis-revealed-altered-expression-of-metabolic-enzymes-and-pdlim5-isoforms
#13
Sarah Anna Konze, Sebastian Werneburg, Astrid Oberbeck, Ruth Olmer, Henning Kempf, Monica Jara-Avaca, Andreas Pich, Robert Zweigerdt, Falk Fritz Reinhold Buettner
Human pluripotent stem cells (hPSCs), both embryonic (hESCs) and induced (hiPSCs), can be differentiated into derivatives of the three germ layers and are promising tools in regenerative medicine. Cardiovascular diseases are the top-ranking cause of premature death worldwide and cell replacement therapies based on in vitro differentiated cardiomyocytes might provide a promising perspective to cure patients in the future. The molecular processes during hPSC cardiomyogenesis are far from being fully understood and we thus have focused here on characterizing the proteome along hESC in vitro differentiation into cardiomyocytes (CMs)...
January 31, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28122380/dysregulation-of-vascular-endothelial-growth-factor-receptor-2-by-multiple-mirnas-in-endothelial-colony-forming-cells-of-coronary-artery-disease
#14
Shu-Han Su, Chun-Hsien Wu, Ya-Lin Chiu, Shing-Jyh Chang, Hung-Hao Lo, Ko-Hsun Liao, Cheng-Fong Tsai, Tsung-Neng Tsai, Chi-Hung Lin, Shu-Meng Cheng, Cheng-Chung Cheng, Hsei-Wei Wang
BACKGROUND/AIMS: Endothelial colony-forming cells (ECFCs) have the potential to be used in regenerative medicine. Dysfunction of ECFCs is correlated with the onset of cardiovascular disorders, especially coronary artery disease (CAD). Binding of vascular endothelial growth factor A (VEGFA) to vascular endothelial growth factor receptor-2 (VEGFR2) triggers cell motility and angiogenesis of ECFCs, which are crucial to vascular repair. METHODS: To identify the miRNA-VEGFR2-dependent regulation of ECFC functions, ECFCs isolated from peripheral blood of disease-free and CAD individuals were subjected to small RNA sequencing for identification of anti-VEGFR2 miRNAs...
January 26, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28114972/optimizing-mesoderm-progenitor-selection-and-three-dimensional-microniche-culture-allows-highly-efficient-endothelial-differentiation-and-ischemic-tissue-repair-from-human-pluripotent-stem-cells
#15
Fengzhi Zhang, Lin Wang, Yaqian Li, Wei Liu, Fuyu Duan, Rujin Huang, Xi Chen, Sophia Chia-Ning Chang, Yanan Du, Jie Na
BACKGROUND: Generation of large quantities of endothelial cells is highly desirable for vascular research, for the treatment of ischemia diseases, and for tissue regeneration. To achieve this goal, we developed a simple, chemically defined culture system to efficiently and rapidly differentiate endothelial cells from human pluripotent stem cells by going through an MESP1 mesoderm progenitor stage. METHODS: Mesp1 is a key transcription factor that regulates the development of early cardiovascular tissue...
January 23, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28087483/cell-number-per-spheroid-and-electrical-conductivity-of-nanowires-influence-the-function-of-silicon-nanowired-human-cardiac-spheroids
#16
Yu Tan, Dylan Richards, Robert C Coyle, Jenny Yao, Ruoyu Xu, Wenyu Gou, Hongjun Wang, Donald R Menick, Bozhi Tian, Ying Mei
: Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) provide an unlimited cell source to treat cardiovascular diseases, the leading cause of death worldwide. However, current hiPSC-CMs retain an immature phenotype that leads to difficulties for integration with adult myocardium after transplantation. To address this, we recently utilized electrically conductive silicon nanowires (e-SiNWs) to facilitate self-assembly of hiPSC-CMs to form nanowired hiPSC cardiac spheroids...
January 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28073865/angiogenic-gene-therapy-in-cardiovascular-diseases-dream-or-vision
#17
REVIEW
Seppo Ylä-Herttuala, Charles Bridges, Michael G Katz, Petra Korpisalo
Chronic cardiovascular diseases are significant health problems. Although current treatment strategies have tremendously improved disease management, up to 30% of these patients cannot be successfully treated with current treatment approaches and new treatment strategies are clearly needed. Gene therapy and therapeutic vascular growth may provide a new treatment option for these patients. Several growth factors, like vascular endothelial growth factors, fibroblast growth factors and hepatocyte growth factor have been tested in clinical trials...
January 10, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28064149/emerging-roles-for-rna-binding-proteins-as-effectors-and-regulators-of-cardiovascular-disease
#18
REVIEW
Ruben G de Bruin, Ton J Rabelink, Anton Jan van Zonneveld, Eric P van der Veer
The cardiovascular system comprises multiple cell types that possess the capacity to modulate their phenotype in response to acute or chronic injury. Transcriptional and post-transcriptional mechanisms play a key role in the regulation of remodelling and regenerative responses to damaged cardiovascular tissues. Simultaneously, insufficient regulation of cellular phenotype is tightly coupled with the persistence and exacerbation of cardiovascular disease. Recently, RNA-binding proteins such as Quaking, HuR, Muscleblind, and SRSF1 have emerged as pivotal regulators of these functional adaptations in the cardiovascular system by guiding a wide-ranging number of post-transcriptional events that dramatically impact RNA fate, including alternative splicing, stability, localization and translation...
January 6, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28063225/purification-of-small-molecule-induced-cardiomyocytes-from-human-induced-pluripotent-stem-cells-using-a-reporter-system
#19
Geun Hye Hwang, So Mi Park, Ho Jae Han, Joong Sun Kim, Seung Pil Yun, Jung Min Ryu, Ho Jin Lee, Woochul Chang, Su-Jin Lee, Jeong-Hee Choi, Jin-Sung Choi, Min Young Lee
In order to realize the practical use of human pluripotent stem cell (hPSC)-derived cardiomyocytes for the purpose of clinical use or cardiovascular research, the generation of large numbers of highly purified cardiomyocytes should be achieved. Here, we show an efficient method for cardiac differentiation of human induced pluripotent stem cells (hiPSCs) in chemically defined conditions and purification of hiPSC-derived cardiomyocytes using a reporter system. Regulation of the Wnt/β-catenin signaling pathway is implicated in the induction of the cardiac differentiation of hPSCs...
January 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28058671/possible-muscle-repair-in-the-human-cardiovascular-system
#20
REVIEW
Linda Sommese, Alberto Zullo, Concetta Schiano, Francesco P Mancini, Claudio Napoli
The regenerative potential of tissues and organs could promote survival, extended lifespan and healthy life in multicellular organisms. Niches of adult stemness are widely distributed and lead to the anatomical and functional regeneration of the damaged organ. Conversely, muscular regeneration in mammals, and humans in particular, is very limited and not a single piece of muscle can fully regrow after a severe injury. Therefore, muscle repair after myocardial infarction is still a chimera. Recently, it has been recognized that epigenetics could play a role in tissue regrowth since it guarantees the maintenance of cellular identity in differentiated cells and, therefore, the stability of organs and tissues...
January 5, 2017: Stem Cell Reviews
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