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Heart stem cell

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https://www.readbyqxmd.com/read/27913896/mesenchymal-stem-cells-with-enos-over-expression-enhance-cardiac-repair-in-rats-with-myocardial-infarction
#1
Leilei Chen, Yuan Zhang, Liangliang Tao, Zhijian Yang, Liansheng Wang
PURPOSE: Transplantation of mesenchymal stem cells (MSCs) is a promising therapeutic option for patients with acute myocardial infarction. METHODS: We show here that the ectopic overexpression of endothelial nitric oxide synthases (eNOS), an endothelial form of NOS, could enhance the ability of MSCs in treating ischemic heart damage after the occlusion of the coronary artery. RESULTS: Adenoviral delivery of human eNOS gene into mouse bone marrow-derived MSCs (BM-MSCs) conferred resistance to oxygen glucose deprivation (OGD)-induced cell death in vitro, and elevated the bioavailability of nitric oxide when injected into the myocardium in vivo...
December 3, 2016: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/27910046/exosomes-based-gene-therapy-for-microrna-delivery
#2
Prabhu Mathiyalagan, Susmita Sahoo
Despite recent advances in scientific knowledge and clinical practice, cardiovascular disease management and treatment remain a major burden. While several treatment strategies using drugs and surgeries are being developed for cardiovascular manifestations, gene-based therapies hold significant promise. Recent findings from our laboratory unveiled a novel mechanism that exosomes, secreted nanovesicles from stem cells, mediate cardiac repair via transferring their unique repertoire of microRNAs (miRNA) to recipient cells in the heart...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27908351/pim1-kinase-overexpression-enhances-ckit-cardiac-stem-cell-cardiac-repair-following-myocardial-infarction-in-swine
#3
Shathiyah Kulandavelu, Vasileios Karantalis, Julia Fritsch, Konstantinos E Hatzistergos, Viky Y Loescher, Frederic McCall, Bo Wang, Luiza Bagno, Samuel Golpanian, Ariel Wolf, Justin Grenet, Adam Williams, Aaron Kupin, Aaron Rosenfeld, Sadia Mohsin, Mark A Sussman, Azorides Morales, Wayne Balkan, Joshua M Hare
BACKGROUND: Pim1 kinase plays an important role in cell division, survival, and commitment of precursor cells towards a myocardial lineage, and overexpression of Pim1 in ckit(+) cardiac stem cells (CSCs) enhances their cardioreparative properties. OBJECTIVES: The authors sought to validate the effect of Pim1-modified CSCs in a translationally relevant large animal preclinical model of myocardial infarction (MI). METHODS: Human cardiac stem cells (hCSCs, n = 10), hckit(+) CSCs overexpressing Pim1 (Pim1(+); n = 9), or placebo (n = 10) were delivered by intramyocardial injection to immunosuppressed Yorkshire swine (n = 29) 2 weeks after MI...
December 6, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27908225/regen-med-california-institute-for-regenerative-medicine-profile-cirm-2-0
#4
Kevin McCormack
The California Institute for Regenerative Medicine was created by the voters of California in 2004 to accelerate stem cell treatments to patients with unmet medical needs. By the end of its first 10 years, the agency was funding ten projects in clinical trials, including work in heart disease and cancer, HIV/AIDS and Type 1 diabetes. The goal now is to significantly increase that number, adding another 50 clinical trial projects funded by California Institute for Regenerative Medicine over the next 5 years...
December 2, 2016: Regenerative Medicine
https://www.readbyqxmd.com/read/27906881/stem-cells-and-clinical-practice-new-advances-and-challenges-at-the-time-of-emerging-problems-with-induced-pluripotent-stem-cell-therapies
#5
Mariusz Z Ratajczak, Kamila Bujko, Wojciech Wojakowski
Humans, like other species that reproduce sexually, originate from a fertilized oocyte (zygote), which is a totipotent stem cell giving rise to an adult organism. During the process of embryogenesis, stem cells at different levels of the developmental hierarchy establish all 3 germ layers and give rise to tissue‑committed stem cells, which are responsible for rejuvenation of a given tissue or organ. The robustness of the stem cell compartment is one of the major factors that directly impact life quality as well as lifespan...
November 10, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27906085/tissue-engineered-cardiac-patch-seeded-with-human-induced-pluripotent-stem-cell-derived-cardiomyocytes-promoted-the-regeneration-of-host-cardiomyocytes-in-a-rat-model
#6
Tadahisa Sugiura, Narutoshi Hibino, Christopher K Breuer, Toshiharu Shinoka
BACKGROUND: Thousands of babies are born with congenital heart defects that require surgical repair involving a prosthetic implant. Lack of growth in prosthetic grafts is especially detrimental in pediatric surgery. Cell seeded biodegradable tissue engineered grafts are a novel solution to this problem. The purpose of the present study is to evaluate the feasibility of seeding human induced pluripotent stem cell derived cardiomyocytes (hiPS-CMs) onto a biodegradable cardiac patch. METHODS: The hiPS-CMs were cultured on a biodegradable patch composed of a polyglycolic acid (PGA) and a 50:50 poly (l-lactic-co-ε-caprolactone) copolymer (PLCL) for 1 week...
December 1, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27903535/magnetic-resonance-imaging-of-cardiac-strain-pattern-following-transplantation-of-human-tissue-engineered-heart-muscles
#7
Xulei Qin, Johannes Riegler, Malte Tiburcy, Xin Zhao, Tony Chour, Babacar Ndoye, Michael Nguyen, Jackson Adams, Mohamed Ameen, Thomas S Denney, Phillip C Yang, Patricia Nguyen, Wolfram H Zimmermann, Joseph C Wu
BACKGROUND: The use of tissue engineering approaches in combination with exogenously produced cardiomyocytes offers the potential to restore contractile function after myocardial injury. However, current techniques assessing changes in global cardiac performance after such treatments are plagued by relatively low detection ability. Since the treatment is locally performed, this detection could be improved by myocardial strain imaging that measures regional contractility. METHODS AND RESULTS: Tissue engineered heart muscles (EHMs) were generated by casting human embryonic stem cell-derived cardiomyocytes with collagen in preformed molds...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27903222/sustained-elabela-gene-therapy-in-high-salt-induced-hypertensive-rats
#8
Claire A Schreiber, Sara J Holditch, Alex Generous, Yasuhiro Ikeda
BACKGROUND: Elabela (ELA) is a recently identified apelin receptor agonist essential for cardiac development, but its biology and therapeutic potential are unclear. In humans ELA transcripts are detected in embryonic stem cells, induced pluripotent stem cells, kidney, heart and blood vessels. ELA through the apelin receptor promotes angiogenesis in vitro, relaxes murine aortic blood vessels and attenuates high blood pressure in vivo. The apelin receptor when bound to its original ligand, apelin, exerts peripheral vasodilatory and positive inotropic effects, conferring cardioprotection in vivo...
November 21, 2016: Current Gene Therapy
https://www.readbyqxmd.com/read/27903111/electric-stimulation-enhances-cardiac-differentiation-of-human-induced-pluripotent-stem-cells-for-myocardial-infarction-therapy
#9
Ruilian Ma, Jialiang Liang, Wei Huang, Linlin Guo, WenFeng Cai, Lei Wang, Christian Paul, Huang-Tian Yang, Ha Won Kim, Yigang Wang
AIM: Electrical stimulation (EleS) can promote cardiac differentiation, but the underlying mechanism is not well known. This study investigated the effect of EleS on cardiomyocyte (CM) differentiation of human induced pluripotent stem cells (hiPSCs) and evaluated the therapeutic effects for the treatment of myocardial infarction (MI). RESULTS: Cardiac differentiation of hiPSCs was induced with EleS after embryoid body formation. Spontaneously beating hiPSCs were observed as early at 2 days when treated with EleS as compared to control treatment...
November 30, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27899394/stress-activated-kinase-mkk7-governs-epigenetics-of-cardiac-repolarization-for-arrhythmia-prevention
#10
Sanjoy K Chowdhury, Wei Liu, Min Zi, Yatong Li, Shunyao Wang, Hoyee Tsui, Sukhpal Prehar, Simon J Castro, Henggui Zhang, Yong Ji, Xiuqin Zhang, Rui-Ping Xiao, Rongli Zhang, Ming Lei, Lukas Cyganek, Kaomei Guan, Catherine B Millar, Xudong Liao, Mukesh K Jain, Mark R Boyett, Elizabeth J Cartwright, Holly A Shiels, Xin Wang
BACKGROUND: -Ventricular arrhythmia is a leading cause of cardiac mortality. Most antiarrhythmics present paradoxical pro-arrhythmic side effects, culminating in a greater risk of sudden death. METHODS: -We describe a new regulatory mechanism linking mitogen-activated kinase kinase-7 (MKK7) deficiency with increased arrhythmia vulnerability in hypertrophied and failing hearts using mouse models harbouring MKK7 knockout or overexpression. The human relevance of this arrhythmogenic mechanism is evaluated in human induced pluripotent stem cells-derived cardiomyocytes (iPSC-CMs)...
November 29, 2016: Circulation
https://www.readbyqxmd.com/read/27890729/maturation-of-human-embryonic-stem-cell-derived-cardiomyocytes-hesc-cms-in-3d-collagen-matrix-effects-of-niche-cell-supplementation-and-mechanical-stimulation
#11
W Zhang, C W Kong, M H Tong, W H Chooi, N Huang, R A Li, B P Chan
: Cardiomyocytes derived from human embryonic stem cells (hESC-CMs) are regarded as a promising source for regenerative medicine, drug testing and disease modeling. Nevertheless, cardiomyocytes are immature in terms of their contractile structure, metabolism and electrophysiological properties. Here, we fabricate cardiac muscle strips by encapsulating hESC-CMs in collagen-based biomaterials. Supplementation of niche cells at 3% to the number of hESC-CMs enhance the maturation of the hESC-CMs in 3D tissue matrix...
November 24, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27888809/human-adipose-tissue-derived-mesenchymal-stem-cells-alleviate-atopic-dermatitis-via-regulation-of-b-lymphocyte-maturation
#12
Tae-Hoon Shin, Byung-Chul Lee, Soon Won Choi, Ji-Hee Shin, Insung Kang, Jin Young Lee, Jae-Jun Kim, Hong-Ki Lee, Jae-Eon Jung, Yong-Woon Choi, Sung-Hoon Lee, Jin-Sang Yoon, Jin-Sub Choi, Chi-Seung Lee, Yoojin Seo, Hyung-Sik Kim, Kyung-Sun Kang
Mesenchymal stem cell (MSC) has been applied for the therapy of allergic disorders due to its beneficial immunomodulatory abilities. However, the underlying mechanisms for therapeutic efficacy are reported to be diverse according to the source of cell isolation or the route of administration. We sought to investigate the safety and the efficacy of human adipose tissue-derived MSCs (hAT-MSCs) in mouse atopic dermatitis (AD) model and to determine the distribution of cells after intravenous administration. Murine AD model was established by multiple treatment of Dermatophagoides farinae...
November 19, 2016: Oncotarget
https://www.readbyqxmd.com/read/27882158/functional-characterization-of-human-umbilical-cord-derived-mesenchymal-stem-cells-for-treatment-of-systolic-heart-failure
#13
Zhihua Fang, Xiaoguang Yin, Jianzhong Wang, Na Tian, Qiang Ao, Yongquan Gu, Ying Liu
Congestive heart failure (HF) is a leading cause of morbidity and mortality worldwide. Although advances in medical therapy, mechanical support and heart transplantation have been made, almost half of all patients with HF succumb to the disease within five years of the initial diagnosis. Therefore, treatment methods need to be identified to restore the structure and function of cardiac muscle. Three patients with HF caused by ischemic cardiomyopathy received human umbilical cord-derived mesenchymal stem cell (HUC-MSC) intravenous infusion were included in the present study...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27880068/human-hair-follicle-associated-pluripotent-hhap-stem-cells-differentiate-to-cardiac-muscle-cells
#14
Natsuko Tohgi, Koya Obara, Masateru Yashiro, Yuko Hamada, Nobuko Arakawa, Sumiyuki Mii, Ryoichi Aki, Robert M Hoffman, Yasuyuki Amoh
We have previously demonstrated that the nestin-expressing hair follicle-associated-pluripotent (HAP) stem cells are located in the bulge area. HAP stem cells have been previously shown to differentiate to neurons, glial cells, keratinocytes, smooth-muscle cells, melanocytes and cardiac-muscle cells in vitro. Subsequently, we demonstrated that HAP stem cells could effect nerve and spinal cord regeneration in mouse models, differentiating to Schwann cells and neurons. In previous studies, we established an efficient protocol for the differentiation of cardiac-muscle cells from mouse HAP stem cells...
November 23, 2016: Cell Cycle
https://www.readbyqxmd.com/read/27879210/murine-transgenic-ips-cell-line-for-monitoring-and-selection-of-cardiomyocytes
#15
Azra Fatima, Guoxing Xu, Filomain Nguemo, Alexey Kuzmenkin, Karsten Burkert, Jürgen Hescheler, Tomo Šarić
We report here a transgenic murine induced pluripotent stem cell (iPSC) line expressing puromycin N-acetyltransferase (PAC) and enhanced green fluorescent protein (EGFP) under the control of α-myosin heavy chain promoter. This transgenic cell line reproducibly differentiates into EGFP-expressing cardiomyocytes (CMs) which can be generated at high purity with puromycin treatment and exhibit molecular and functional properties of immature heart muscle cells. This genetically modified iPSC line can be used for assessment of the utility of CMs for myocardial repair, pharmacological and toxicological applications and development of improved cardiac differentiation protocols...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27878916/can-the-outcomes-of-mesenchymal-stem-cell-based-therapy-for-myocardial-infarction-be-improved-providing-weapons-and-armour-to-cells
#16
REVIEW
Andrey A Karpov, Daria V Udalova, Michael G Pliss, Michael M Galagudza
Use of mesenchymal stem cell (MSC) transplantation after myocardial infarction (MI) has been found to have infarct-limiting effects in numerous experimental and clinical studies. However, recent meta-analyses of randomized clinical trials on MSC-based MI therapy have highlighted the need for improving its efficacy. There are two principal approaches for increasing therapeutic effect of MSCs: (i) preventing massive MSC death in ischaemic tissue and (ii) increasing production of cardioreparative growth factors and cytokines with transplanted MSCs...
November 23, 2016: Cell Proliferation
https://www.readbyqxmd.com/read/27878328/targeting-the-hedgehog-signaling-pathway-for-cardiac-repair-and-regeneration
#17
REVIEW
Y Wang, P Lu, D Zhao, J Sheng
The hedgehog (Hh) signaling pathway is involved in the angiogenesis and development of the coronary vasculature in the embryonic heart. Recently, the Hh signal pathway has emerged as an important regulator that can increase cardiomyocyte proliferation, inhibit cardiomyocyte death and apoptosis, recruit endothelial progenitor cell (EPCs) into sites of myocardial ischemia, and direct stem cells to differentiate into cardiac muscle lineage. Experimental studies have tried to target the Hh signaling pathway for cardiac repair and regeneration...
November 22, 2016: Herz
https://www.readbyqxmd.com/read/27877076/cardiomyogenic-differentiation-of-human-dental-follicle-derived-stem-cells-by-suberoylanilide-hydroxamic-acid-and-their-in-vivo-homing-property
#18
Iel-Yong Sung, Han-Na Son, Imran Ullah, Dinesh Bharti, Ju-Mi Park, Yeong-Cheol Cho, June-Ho Byun, Young-Hoon Kang, Su-Jin Sung, Jong-Woo Kim, Gyu-Jin Rho, Bong-Wook Park
The purpose of the present study was to investigate the in vitro cardiomyogenic differentiation potential of human dental follicle-derived stem cells (DFCs) under the influence of suberoylanilide hydroxamic acid (SAHA), a member of the histone deacetylase inhibitor family, and analyze the in vivo homing capacity of induced cardiomyocytes (iCMs) when transplanted systemically. DFCs from extracted wisdom teeth showed mesenchymal stem cell (MSC) characteristics such as plate adherent growing, expression of MSC markers (CD44, CD90, and CD105), and mesenchymal lineage-specific differentiation potential...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27875722/progenitor-cells-from-atria-ventricle-and-peripheral-blood-of-the-same-patients-exhibit-functional-differences-associated-with-cardiac-repair
#19
Parul Dixit, Hayden Donnelly, Midori Edamatsu, Ivor Galvin, Richard Bunton, Rajesh Katare
AIM: Deciding the best cell type for cardiac regeneration remains a big challenge. No studies have directly compared the functional efficacy of cardiac progenitor cells (CPCs) with extra-cardiac stem cells isolated from the same patient. METHODS AND RESULTS: We compared the functional characteristics of endothelial progenitor cells (EPCs), right atrial (RAA) CPCs and left ventricular (LV) CPCs isolated from the same patients (n=14). Within the same heart, RAA and LV CPCs exhibited marked differences in surface marker expression, with RAA CPCs exhibiting better expansion potential and migration properties...
November 19, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27872447/evolving-approaches-to-heart-regeneration-by-therapeutic-stimulation-of-resident-cardiomyocyte-cell-cycle
#20
Raife Dilek Turan, Galip Servet Aslan, Doğacan Yücel, Remziye Döğer, Fatih Kocabaş
Heart has long been considered a terminally differentiated organ. Recent studies, however, have suggested that there is a modest degree of cardiomyocyte (CM) turnover in adult mammalian heart, albeit not sufficient for replacement of lost CMs following cardiac injuries. Cardiac regeneration studies in various model organisms including zebrafish, newt, and more recently in neonatal mouse, have demonstrated that CM dedifferentiation and concomitant proliferation play important roles in replacement of lost CMs and restoration of cardiac contractility...
November 2016: Anatolian Journal of Cardiology
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