scholarly journals Injectable Hydrogels for Cardiac Tissue Repair after Myocardial Infarction

2015 ◽  
Vol 2 (11) ◽  
pp. 1500122 ◽  
Author(s):  
Anwarul Hasan ◽  
Ahmad Khattab ◽  
Mohammad Ariful Islam ◽  
Khaled Abou Hweij ◽  
Joya Zeitouny ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Tissue Repair ◽  
Cardiac Tissue ◽  
Injectable Hydrogels

scholarly journals Stem cell-derived cell sheet transplantation for heart tissue repair in myocardial infarction

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Rui Guo ◽  
Masatoshi Morimatsu ◽  
Tian Feng ◽  
Feng Lan ◽  
Dehua Chang ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Stem Cell ◽  
Tissue Repair ◽  
Cardiac Tissue ◽  
Cell Sheet ◽  
Clinical Manifestations ◽  
Induced Pluripotent Stem Cell ◽  
Heart Tissue ◽  
Therapeutic Effects ◽  
Cell Sheets

AbstractStem cell-derived sheet engineering has been developed as the next-generation treatment for myocardial infarction (MI) and offers attractive advantages in comparison with direct stem cell transplantation and scaffold tissue engineering. Furthermore, induced pluripotent stem cell-derived cell sheets have been indicated to possess higher potential for MI therapy than other stem cell-derived sheets because of their capacity to form vascularized networks for fabricating thickened human cardiac tissue and their long-term therapeutic effects after transplantation in MI. To date, stem cell sheet transplantation has exhibited a dramatic role in attenuating cardiac dysfunction and improving clinical manifestations of heart failure in MI. In this review, we retrospectively summarized the current applications and strategy of stem cell-derived cell sheet technology for heart tissue repair in MI.

Adult Stem Cells and Biocompatible Scaffolds as Smart Drug Delivery Tools for Cardiac Tissue Repair

2013 ◽  
Vol 20 (28) ◽  
pp. 3429-3447 ◽  
Author(s):  
Stefania Pagliari ◽  
Sara Romanazzo ◽  
Diogo Mosqueira ◽  
Perpetua Pinto-do-O ◽  
Takao Aoyagi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Stem Cells ◽  
Tissue Repair ◽  
Adult Stem Cells ◽  
Cardiac Tissue ◽  
Smart Drug ◽  
Smart Drug Delivery

Flow Cytometric Evaluation of the Ongoing Angiogenic Response in Rat Cardiac Tissue Following Myocardial Infarction

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Cecilie Hoeeg ◽  
Lars Ringgaard ◽  
Esben Christensen ◽  
Bjarke Follin ◽  
Simon Bentsen ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Cardiac Tissue ◽  
Angiogenic Response ◽  
Flow Cytometric ◽  
Flow Cytometric Evaluation

Involvement of monocytes/macrophages as key factors in the development and progression of cardiovascular diseases

2014 ◽  
Vol 458 (2) ◽  
pp. 187-193 ◽  
Author(s):  
María Fernández-Velasco ◽  
Silvia González-Ramos ◽  
Lisardo Boscá
Keyword(s):  
Myocardial Infarction ◽  
Immune System ◽  
Cardiovascular Diseases ◽  
Cardiac Tissue ◽  
Initial Period ◽  
Cardiac Injury ◽  
Key Factors ◽  
Cardiac Damage ◽  
Inflammatory Profile

Emerging evidence points to the involvement of specialized cells of the immune system as key drivers in the pathophysiology of cardiovascular diseases. Monocytes are an essential cell component of the innate immune system that rapidly mobilize from the bone marrow to wounded tissues where they differentiate into macrophages or dendritic cells and trigger an immune response. In the healthy heart a limited, but near-constant, number of resident macrophages have been detected; however, this number significantly increases during cardiac damage. Shortly after initial cardiac injury, e.g. myocardial infarction, a large number of macrophages harbouring a pro-inflammatory profile (M1) are rapidly recruited to the cardiac tissue, where they contribute to cardiac remodelling. After this initial period, resolution takes place in the wound, and the infiltrated macrophages display a predominant deactivation/pro-resolution profile (M2), promoting cardiac repair by mediating pro-fibrotic responses. In the present review we focus on the role of the immune cells, particularly in the monocyte/macrophage population, in the progression of the major cardiac pathologies myocardial infarction and atherosclerosis.

Hypoxia-inducible factors individually facilitate inflammatory myeloid metabolism and inefficient cardiac repair

2021 ◽  
Vol 218 (9) ◽  
Author(s):  
Matthew DeBerge ◽  
Connor Lantz ◽  
Shirley Dehn ◽  
David P. Sullivan ◽  
Anja M. van der Laan ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Tissue Repair ◽  
Myeloid Cell ◽  
Selective Inhibition ◽  
Mitochondrial Metabolism ◽  
Hypoxia Inducible Factors ◽  
Low Oxygen ◽  
Ischemic Tissue ◽  
Anti Inflammatory ◽  
Parenchymal Cells

Hypoxia-inducible factors (HIFs) are activated in parenchymal cells in response to low oxygen and as such have been proposed as therapeutic targets during hypoxic insult, including myocardial infarction (MI). HIFs are also activated within macrophages, which orchestrate the tissue repair response. Although isoform-specific therapeutics are in development for cardiac ischemic injury, surprisingly, the unique role of myeloid HIFs, and particularly HIF-2α, is unknown. Using a murine model of myocardial infarction and mice with conditional genetic loss and gain of function, we uncovered unique proinflammatory roles for myeloid cell expression of HIF-1α and HIF-2α during MI. We found that HIF-2α suppressed anti-inflammatory macrophage mitochondrial metabolism, while HIF-1α promoted cleavage of cardioprotective MerTK through glycolytic reprogramming of macrophages. Unexpectedly, combinatorial loss of both myeloid HIF-1α and HIF-2α was catastrophic and led to macrophage necroptosis, impaired fibrogenesis, and cardiac rupture. These findings support a strategy for selective inhibition of macrophage HIF isoforms and promotion of anti-inflammatory mitochondrial metabolism during ischemic tissue repair.

scholarly journals Human embryonic stem cell-derived microvascular grafts for cardiac tissue preservation after myocardial infarction

Biomaterials ◽  
2011 ◽  
Vol 32 (4) ◽  
pp. 1102-1109 ◽  
Author(s):  
Thomas P. Kraehenbuehl ◽  
Lino S. Ferreira ◽  
Alison M. Hayward ◽  
Matthias Nahrendorf ◽  
André J. van der Vlies ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Stem Cell ◽  
Embryonic Stem Cell ◽  
Human Embryonic Stem Cell ◽  
Cardiac Tissue ◽  
Embryonic Stem ◽  
Tissue Preservation

Abstract 341: Transplantation of Cardiac Tissue Sheets Including Defined Cardiovascular Cell Populations Differentiated from Human-Induced Pluripotent Stem Cells Ameliorates Cardiac Dysfunction After Subacute Myocardial Infarction

2012 ◽  
Vol 111 (suppl_1) ◽  
Author(s):  
Hidetoshi Masumoto ◽  
Tadashi Ikeda ◽  
Tatsuya Shimizu ◽  
Teruo Okano ◽  
Ryuzo Sakata ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Stem Cells ◽  
Induced Pluripotent Stem Cells ◽  
Pluripotent Stem Cells ◽  
Cardiac Dysfunction ◽  
Cardiac Tissue ◽  
Vascular Endothelial Cell ◽  
Cell Populations ◽  
Cardiac Cell ◽  
Induced Pluripotent

BACKGROUNDS: To realize cardiac regeneration with human induced pluripotent stem cells (hiPSCs), efficient differentiation from hiPSCs to defined cardiac cell populations (cardiomyocytes [CMs]/ endothelial cells [ECs]/ vascular mural cells [MCs]), and transplantation technique for fair engraftment are required. Recently, we reported that mouse ES cell-derived cardiac tissue sheet transplantation to rat myocardial infarction (MI) model ameliorated cardiac function after MI (Stem Cells, in press). Here we tried to extend this technique to hiPSCs. METHODS & RESULTS: We have reported an efficient cardiomyocyte differentiation protocol based on a monolayer culture (PLoS One, 2011), in which cardiac troponin-T (cTnT)-positive CMs robustly appeared with 50-80% efficiency. In this study, we further modified the protocol to induce vascular cells (ECs/MCs) together with CMs by vascular endothelial cell growth factor supplementation, resulted in proportional differentiation of cTnT+-CMs (62.7±11.7% of total cells), VE-cadherin+-ECs (7.8±4.9%) and PDGFRb+-MCs (18.2±11.0%) at differentiation day 15 (n=12). Then, these cells were transferred onto temperature-responsive culture dishes (UpCell dishes; CellSeed, Tokyo, Japan) to form cardiac tissue sheets including defined cardiac populations. After 4 days of culture, we successfully collected self-pulsating cardiac tissue sheets with 7.0×10 5 ±2.3 (n=12) of cells consisted of CMs (46.9±15.9% of total cells), ECs (4.1±3.7%), and MCs (22.5±15.7%). Three-layered hiPSC-derived cardiac sheets were transplanted to a MI model of athymic rat heart one week after MI. In transplantation group, echocardiogram showed a significant improvement of systolic function of left ventricle (fractional shortening: 22.6±5.0 vs 36.5±8.0%, p<0.001, n=20) and a decrease in akinetic length (20.8±9.7 vs 2.5±7.7%, p<0.001, n=20) (pre-treatment vs 4weeks after transplantation). We also succeeded in generation of larger sheets (1.6 inch diameter) with the same method. CONCLUTIONS: Transplantation of hiPSC-derived cardiac tissue sheets significantly ameliorates cardiac dysfunction after MI. Thus, we developed a valuable technological basis for hiPSC-based cardiac cell therapy.

Sign in / Sign up

Export Citation Format

Share Document