51
|
Svystonyuk DA, Mewhort HEM, Fedak PWM. Using Acellular Bioactive Extracellular Matrix Scaffolds to Enhance Endogenous Cardiac Repair. Front Cardiovasc Med 2018; 5:35. [PMID: 29696148 PMCID: PMC5904207 DOI: 10.3389/fcvm.2018.00035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/22/2018] [Indexed: 01/16/2023] Open
Abstract
An inability to recover lost cardiac muscle following acute ischemic injury remains the biggest shortcoming of current therapies to prevent heart failure. As compared to standard medical and surgical treatments, tissue engineering strategies offer the promise of improved heart function by inducing regeneration of functional heart muscle. Tissue engineering approaches that use stem cells and genetic manipulation have shown promise in preclinical studies but have also been challenged by numerous critical barriers preventing effective clinical translational. We believe that surgical intervention using acellular bioactive ECM scaffolds may yield similar therapeutic benefits with minimal translational hurdles. In this review, we outline the limitations of cellular-based tissue engineering strategies and the advantages of using acellular biomaterials with bioinductive properties. We highlight key anatomic targets enriched with cellular niches that can be uniquely activated using bioactive scaffold therapy. Finally, we review the evolving cardiovascular tissue engineering landscape and provide critical insights into the potential therapeutic benefits of acellular scaffold therapy.
Collapse
Affiliation(s)
- Daniyil A Svystonyuk
- Section of Cardiac Surgery, Department of Cardiac Sciences, Cumming School of Medicine, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| | - Holly E M Mewhort
- Section of Cardiac Surgery, Department of Cardiac Sciences, Cumming School of Medicine, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| | - Paul W M Fedak
- Section of Cardiac Surgery, Department of Cardiac Sciences, Cumming School of Medicine, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| |
Collapse
|
52
|
Becker M, Maring JA, Schneider M, Herrera Martin AX, Seifert M, Klein O, Braun T, Falk V, Stamm C. Towards a Novel Patch Material for Cardiac Applications: Tissue-Specific Extracellular Matrix Introduces Essential Key Features to Decellularized Amniotic Membrane. Int J Mol Sci 2018; 19:E1032. [PMID: 29596384 PMCID: PMC5979550 DOI: 10.3390/ijms19041032] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/26/2018] [Accepted: 03/27/2018] [Indexed: 12/18/2022] Open
Abstract
There is a growing need for scaffold material with tissue-specific bioactivity for use in regenerative medicine, tissue engineering, and for surgical repair of structural defects. We developed a novel composite biomaterial by processing human cardiac extracellular matrix (ECM) into a hydrogel and combining it with cell-free amniotic membrane via a dry-coating procedure. Cardiac biocompatibility and immunogenicity were tested in vitro using human cardiac fibroblasts, epicardial progenitor cells, murine HL-1 cells, and human immune cells derived from buffy coat. Processing of the ECM preserved important matrix proteins as demonstrated by mass spectrometry. ECM coating did not alter the mechanical characteristics of decellularized amniotic membrane but did cause a clear increase in adhesion capacity, cell proliferation and viability. Activated monocytes secreted less pro-inflammatory cytokines, and both macrophage polarization towards the pro-inflammatory M1 type and T cell proliferation were prevented. We conclude that the incorporation of human cardiac ECM hydrogel shifts and enhances the bioactivity of decellularized amniotic membrane, facilitating its use in future cardiac applications.
Collapse
Affiliation(s)
- Matthias Becker
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
| | - Janita A Maring
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
| | - Maria Schneider
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
| | - Aarón X Herrera Martin
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, 13353 Berlin, Germany.
| | - Martina Seifert
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
| | - Oliver Klein
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
| | - Thorsten Braun
- Department of Obstetrics and Gynecology, Charite Medical University, 13353 Berlin, Germany.
| | - Volkmar Falk
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 13316 Berlin, Germany.
- Deutsches Herzzentrum Berlin (DHZB), Augustenburger Platz 1, 13353 Berlin, Germany.
| | - Christof Stamm
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), 13353 Berlin, Germany.
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 13316 Berlin, Germany.
- Deutsches Herzzentrum Berlin (DHZB), Augustenburger Platz 1, 13353 Berlin, Germany.
| |
Collapse
|
53
|
Abstract
Despite therapeutic advances that have prolonged life, myocardial infarction (MI) remains a leading cause of death worldwide and imparts a significant economic burden. The advancement of treatments to improve cardiac repair post-MI requires the discovery of new targeted treatment strategies. Recent studies have highlighted the importance of the epicardial covering of the heart in both cardiac development and lower vertebrate cardiac regeneration. The epicardium serves as a source of cardiac cells including smooth muscle cells, endothelial cells and cardiac fibroblasts. Mammalian adult epicardial cells are typically quiescent. However, the fetal genetic program is reactivated post-MI, and epicardial epithelial-to-mesenchymal transition (EMT) occurs as an inherent mechanism to support neovascularization and cardiac healing. Unfortunately, endogenous EMT is not enough to encourage sufficient repair. Recent developments in our understanding of the mechanisms supporting the EMT process has led to a number of studies directed at augmenting epicardial EMT post-MI. With a focus on the role of the primary cilium, this review outlines the newly demonstrated mechanisms supporting EMT, the role of epicardial EMT in cardiac development, and promising advances in augmenting epicardial EMT as potential therapeutics to support cardiac repair post-MI.
Collapse
|
54
|
Zhou P, Tan YZ, Wang HJ, Wang GD. Hypoxic preconditioning-induced autophagy enhances survival of engrafted endothelial progenitor cells in ischaemic limb. J Cell Mol Med 2017; 21:2452-2464. [PMID: 28374977 PMCID: PMC5618704 DOI: 10.1111/jcmm.13167] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 02/17/2017] [Indexed: 01/08/2023] Open
Abstract
Recent clinical studies have suggested that endothelial progenitor cells (EPCs) transplantation provides a modest benefit for treatment of the ischaemic diseases such as limb ischaemia. However, cell‐based therapies have been limited by poor survival of the engrafted cells. This investigation was designed to establish optimal hypoxia preconditioning and evaluate effects of hypoxic preconditioning‐induced autophagy on survival of the engrafted EPCs. Autophagy of CD34+VEGFR‐2+EPCs isolated from rat bone marrow increased after treatment with 1% O2. The number of the apoptotic cells in the hypoxic cells increased significantly after autophagy was inhibited with 3‐methyladenine. According to balance of autophagy and apoptosis, treatment with 1% O2 for 2 hrs was determined as optimal preconditioning for EPC transplantation. To examine survival of the hypoxic cells, the cells were implanted into the ischaemic pouch of the abdominal wall in rats. The number of the survived cells was greater in the hypoxic group. After the cells loaded with fibrin were transplanted with intramuscular injection, blood perfusion, arteriogenesis and angiogenesis in the ischaemic hindlimb were analysed with laser Doppler‐based perfusion measurement, angiogram and the density of the microvessels in histological sections, respectively. Repair of the ischaemic tissue was improved significantly in the hypoxic preconditioning group. Loading the cells with fibrin has cytoprotective effect on survival of the engrafted cells. These results suggest that activation of autophagy with hypoxic preconditioning is an optimizing strategy for EPC therapy of limb ischaemia.
Collapse
Affiliation(s)
- Pei Zhou
- Department of Anatomy, Histology and Embryology, Shanghai Medical School of Fudan University, Shanghai, China
| | - Yu-Zhen Tan
- Department of Anatomy, Histology and Embryology, Shanghai Medical School of Fudan University, Shanghai, China
| | - Hai-Jie Wang
- Department of Anatomy, Histology and Embryology, Shanghai Medical School of Fudan University, Shanghai, China
| | - Guo-Dong Wang
- Department of Anatomy, Histology and Embryology, Shanghai Medical School of Fudan University, Shanghai, China
| |
Collapse
|