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Kukumberg M, Phermthai T, Wichitwiengrat S, Wang X, Arjunan S, Chong SY, Fong CY, Wang JW, Rufaihah AJ, Mattar CNZ. Hypoxia-induced amniotic fluid stem cell secretome augments cardiomyocyte proliferation and enhances cardioprotective effects under hypoxic-ischemic conditions. Sci Rep 2021; 11:163. [PMID: 33420256 PMCID: PMC7794288 DOI: 10.1038/s41598-020-80326-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 12/17/2020] [Indexed: 12/19/2022] Open
Abstract
Secretome derived from human amniotic fluid stem cells (AFSC-S) is rich in soluble bioactive factors (SBF) and offers untapped therapeutic potential for regenerative medicine while avoiding putative cell-related complications. Characterization and optimal generation of AFSC-S remains challenging. We hypothesized that modulation of oxygen conditions during AFSC-S generation enriches SBF and confers enhanced regenerative and cardioprotective effects on cardiovascular cells. We collected secretome at 6-hourly intervals up to 30 h following incubation of AFSC in normoxic (21%O2, nAFSC-S) and hypoxic (1%O2, hAFSC-S) conditions. Proliferation of human adult cardiomyocytes (hCM) and umbilical cord endothelial cells (HUVEC) incubated with nAFSC-S or hAFSC-S were examined following culture in normoxia or hypoxia. Lower AFSC counts and richer protein content in AFSC-S were observed in hypoxia. Characterization of AFSC-S by multiplex immunoassay showed higher concentrations of pro-angiogenic and anti-inflammatory SBF. hCM demonstrated highest proliferation with 30h-hAFSC-S in hypoxic culture. The cardioprotective potential of concentrated 30h-hAFSC-S treatment was demonstrated in a myocardial ischemia-reperfusion injury mouse model by infarct size and cell apoptosis reduction and cell proliferation increase when compared to saline treatment controls. Thus, we project that hypoxic-generated AFSC-S, with higher pro-angiogenic and anti-inflammatory SBF, can be harnessed and refined for tailored regenerative applications in ischemic cardiovascular disease.
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Affiliation(s)
- Marek Kukumberg
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tatsanee Phermthai
- Stem Cell Research and Development for Medical Therapy Unit, Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Suparat Wichitwiengrat
- Stem Cell Research and Development for Medical Therapy Unit, Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Xiaoyuan Wang
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
| | - Subramanian Arjunan
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Suet Yen Chong
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
| | - Chui-Yee Fong
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jiong-Wei Wang
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Research Institute, National University Heart Centre Singapore, Singapore, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Abdul Jalil Rufaihah
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Citra Nurfarah Zaini Mattar
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
- Department of Obstetrics and Gynaecology, National University Health System, Singapore, Singapore.
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Liu YW, Fang YH, Su CT, Hwang SM, Liu PY, Wu SN. The biochemical and electrophysiological profiles of amniotic fluid-derived stem cells following Wnt signaling modulation cardiac differentiation. Cell Death Discov 2019; 5:59. [PMID: 30701091 PMCID: PMC6349909 DOI: 10.1038/s41420-019-0143-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/31/2018] [Accepted: 01/08/2019] [Indexed: 12/12/2022] Open
Abstract
Owing to the beneficial properties of amniotic fluid-derived stem cells (AFSCs), including pluripotency and the lack of ethical issues associated with embryonic stem cells (ESCs), they should be a promising cell source for regenerative medicine. However, how to differentiate AFSCs into contracting cardiomyocytes has not been established. In this study, a well-established, direct cardiac differentiation protocol involving the modulation of Wnt signaling was used to differentiate Oct 3/4+ AFSCs into cardiomyocytes. By day 14 of cardiomyocyte differentiation, these AFSCs expressed cardiac-specific genes (i.e., cardiac troponin T and myosin light chain 2v) and proteins but could not spontaneously contract. Using the patch-clamp technique, we further characterized the electrophysiological properties of human ESC-derived cardiomyocytes (hESC-CMs) and differentiated AFSCs. We used different configurations to investigate membrane potentials and ion currents in differentiated AFSCs and hESC-CMs. Under cell-attached voltage- or whole-cell current-clamp modes, we recorded spontaneous action currents (ACs) or action potentials (APs) in hESC-CMs but not in differentiated AFSCs. Compared to hESC-CMs, differentiated AFSCs showed significantly diminished activity of both BKCa and IKCa channels, which might lead to a lack of spontaneous ACs and APs in differentiated AFSCs. These results indicated that this well-established Wnt signaling modulating cardiac differentiation protocol was insufficient to induce the differentiation of functional cardiomyocytes from Oct 3/4+ AFSCs. Therefore, AFSC may not be an ideal candidate for cardiomyocyte differentiation.
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Affiliation(s)
- Yen-Wen Liu
- 1Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd. North District, Tainan, 70403 Taiwan.,2Institute of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Hsein Fang
- 2Institute of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Ting Su
- 3Division of Nephrology, Department of Internal Medicine, National Taiwan University Hospital, Yun-Lin Branch, Yun-Lin, Taiwan
| | - Shiaw-Min Hwang
- 4Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan
| | - Ping-Yen Liu
- 1Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd. North District, Tainan, 70403 Taiwan.,2Institute of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Nan Wu
- 5Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, 1 University Rd, East District, Tainan, Taiwan.,6Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Tsao CJ, Taraballi F, Pandolfi L, Velasquez-Mao AJ, Ruano R, Tasciotti E, Jacot JG. Controlled Release of Small Molecules for Cardiac Differentiation of Pluripotent Stem Cells. Tissue Eng Part A 2018; 24:1798-1807. [PMID: 30129882 DOI: 10.1089/ten.tea.2018.0054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) have been shown to differentiate to functional cardiomyocytes (CM) with high efficiency through temporally controlled inhibition of the GSK3/Wnt signaling pathways. In this study, we investigated the ability of temporally controlled release of GSK3/Wnt small-molecule inhibitors to drive cardiac differentiation of iPSC without manual intervention. Porous silica particles were loaded with GSK3 inhibitor CHIR99021 or Wnt inhibitor IWP2, and the particles containing IWP2 were coated with 5 wt% poly(lactic-co-glycolic acid) 50:50 to delay release by ∼72 h. iPSCs reprogrammed through mRNA transfection were cultured with these particles up to 30 days. High-performance liquid chromatography suggests a burst release of CHIR99021 within the first 24 h and a delayed release of IWP2 after 72 h. Annexin V/propidium iodide staining did not show a significant effect on apoptosis or necrosis rates. Cultured cells upregulated both early (Nkx 2.5, Isl-1) and late (cTnT, MHC, Cx43) cardiac markers, assayed with a quantitative real-time polymerase chain reaction, and began spontaneous contraction at 3.0 ± 0.6 Hz at 15-21 days after the start of differentiation. CM had clear sarcomeric striations when stained for β-myosin heavy chain, and showed expression and punctate membrane localization of gap junction protein Connexin43. Calcium and voltage-sensitive imaging showed both action potential and calcium transients typical of immature CM. This study showed that the cardiac differentiation of pluripotent stem cells can be directed by porous silica vectors with temporally controlled release of small-molecule inhibitors. These results suggest methods for automating and eliminating variability in manual maintenance of inhibitor concentrations in the differentiation of pluripotent stem cells to CM.
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Affiliation(s)
| | - Francesca Taraballi
- Department of Regenerative Medicine, Houston Methodist Research Institute, Houston, Texas
| | - Laura Pandolfi
- Department of Regenerative Medicine, Houston Methodist Research Institute, Houston, Texas
| | | | - Rodrigo Ruano
- Department of Obstetrics and Gynecology, Fetal Diagnostic and Intervention Center, Rochester, Minnesota
| | - Ennio Tasciotti
- Department of Regenerative Medicine, Houston Methodist Research Institute, Houston, Texas
| | - Jeffrey G Jacot
- Department of Bioengineering, Rice University, Houston, Texas
- Congenital Heart Surgery Service, Texas Children's Hospital, Houston, Texas
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado
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4
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Cardiomyocytes Derived from Human CardiopoieticAmniotic Fluids. Sci Rep 2018; 8:12028. [PMID: 30104705 PMCID: PMC6089907 DOI: 10.1038/s41598-018-30537-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 08/01/2018] [Indexed: 02/08/2023] Open
Abstract
Human amniotic fluid (hAF) cells share characteristics of both embryonic and adult stem cells. They proliferate rapidly and can differentiate into cells of all embryonic germ layers but do not form teratomas. Embryoid-bodies obtained from hAF have cardiac differentiation potential, but terminal differentiation to cardiomyocytes (CMs) has not yet been described. Our purpose was to promote cardiac differentiation in hAFcells. Cells were exposed to inducing factors for up to 15 days. Only the subset of hAF cells expressing the multipotency markers SSEA4, OCT4 and CD90 (CardiopoieticAF cells) responded to the differentiation process by increasing the expression of the cardiac transcription factors Nkx2.5 and GATA4, sarcomeric proteins (cTnT, α-MHC, α-SA), Connexin43 and atrial and ventricular markers. Furthermore, differentiated cells were positive for the calcium pumps CACNA1C and SERCA2a, with approximately 30% of CardiopoieticAF-derived CM-like cells responding to caffeine or adrenergic stimulation. Some spontaneous rare beating foci were also observed. In conclusion, we demonstrated that CardiopoieticAF cells might differentiate toward the cardiac lineage giving rise to CM-like cells characterized by several cardiac-specific molecular, structural, and functional properties.
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Kunisaki SM. Amniotic Fluid Stem Cells for the Treatment of Surgical Disorders in the Fetus and Neonate. Stem Cells Transl Med 2018; 7:767-773. [PMID: 30085416 PMCID: PMC6216434 DOI: 10.1002/sctm.18-0018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 05/14/2018] [Accepted: 06/08/2018] [Indexed: 12/11/2022] Open
Abstract
Over the past decade, amniotic fluid‐derived stem cells have emerged as a novel experimental approach aimed at improving outcomes in children with congenital anomalies, including spina bifida, heart defects, and diaphragmatic hernia. Interest in these cells for the treatment of prenatally diagnosed diseases has arisen based on numerous studies demonstrating the relative ease of harvesting an abundant quantity of amniocytes from a small aliquot of fluid, the unique properties of amniocytes themselves, and the beneficial effects of amniotic fluid‐derived stem cells in experimental animal models. This report gives a brief overview of the rationale and current status of amniotic fluid stem cell‐based therapies, focusing on its relevance to birth defects affecting the fetus and neonate. The author proposes a roadmap for further study that would be required prior to clinical application of amniotic fluid stem cell technologies. stem cells translational medicine2018;7:767–773
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Affiliation(s)
- Shaun M Kunisaki
- Department of Surgery, Fetal Diagnosis and Treatment Center and Section of Pediatric Surgery, University of Michigan, C.S. Mott Children's and Von Voigtlander Women's Hospital, Ann Arbor, Michigan, USA
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6
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Bollini S, Silini AR, Banerjee A, Wolbank S, Balbi C, Parolini O. Cardiac Restoration Stemming From the Placenta Tree: Insights From Fetal and Perinatal Cell Biology. Front Physiol 2018; 9:385. [PMID: 29695981 PMCID: PMC5904405 DOI: 10.3389/fphys.2018.00385] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/28/2018] [Indexed: 12/27/2022] Open
Abstract
Efficient cardiac repair and ultimate regeneration still represents one of the main challenges of modern medicine. Indeed, cardiovascular disease can derive from independent conditions upsetting heart structure and performance: myocardial ischemia and infarction (MI), pharmacological cardiotoxicity, and congenital heart defects, just to name a few. All these disorders have profound consequences on cardiac tissue, inducing the onset of heart failure over time. Since the cure is currently represented by heart transplantation, which is extremely difficult due to the shortage of donors, much effort is being dedicated to developing innovative therapeutic strategies based on stem cell exploitation. Among the broad scenario of stem/progenitor cell subpopulations, fetal and perinatal sources, namely amniotic fluid and term placenta, have gained interest due to their peculiar regenerative capacity, high self-renewal capability, and ease of collection from clinical waste material. In this review, we will provide the state-of-the-art on fetal perinatal stem cells for cardiac repair and regeneration. We will discuss different pathological conditions and the main therapeutic strategies proposed, including cell transplantation, putative paracrine therapy, reprogramming, and tissue engineering approaches.
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Affiliation(s)
- Sveva Bollini
- Regenerative Medicine Laboratory, Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Antonietta R Silini
- Centro di Ricerca E. Menni, Fondazione Poliambulanza - Istituto Ospedaliero, Brescia, Italy
| | - Asmita Banerjee
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Susanne Wolbank
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Carolina Balbi
- Regenerative Medicine Laboratory, Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Ornella Parolini
- Centro di Ricerca E. Menni, Fondazione Poliambulanza - Istituto Ospedaliero, Brescia, Italy.,Institute of Human Anatomy and Cell Biology, "A. Gemelli" Faculty of Medicine and Surgery, Catholic University of the Sacred Heart, Rome, Italy
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7
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Velasquez-Mao AJ, Tsao CJM, Monroe MN, Legras X, Bissig-Choisat B, Bissig KD, Ruano R, Jacot JG. Differentiation of spontaneously contracting cardiomyocytes from non-virally reprogrammed human amniotic fluid stem cells. PLoS One 2017; 12:e0177824. [PMID: 28545044 PMCID: PMC5435315 DOI: 10.1371/journal.pone.0177824] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 05/03/2017] [Indexed: 11/18/2022] Open
Abstract
Congenital heart defects are the most common birth defect. The limiting factor in tissue engineering repair strategies is an autologous source of functional cardiomyocytes. Amniotic fluid contains an ideal cell source for prenatal harvest and use in correction of congenital heart defects. This study aims to investigate the potential of amniotic fluid-derived stem cells (AFSC) to undergo non-viral reprogramming into induced pluripotent stem cells (iPSC) followed by growth-factor-free differentiation into functional cardiomyocytes. AFSC from human second trimester amniotic fluid were transfected by non-viral vesicle fusion with modified mRNA of OCT4, KLF4, SOX2, LIN28, cMYC and nuclear GFP over 18 days, then differentiated using inhibitors of GSK3 followed 48 hours later by inhibition of WNT. AFSC-derived iPSC had high expression of OCT4, NANOG, TRA-1-60, and TRA-1-81 after 18 days of mRNA transfection and formed teratomas containing mesodermal, ectodermal, and endodermal germ layers in immunodeficient mice. By Day 30 of cardiomyocyte differentiation, cells contracted spontaneously, expressed connexin 43 and β-myosin heavy chain organized in sarcomeric banding patterns, expressed cardiac troponin T and β-myosin heavy chain, showed upregulation of NKX2.5, ISL-1 and cardiac troponin T with downregulation of POU5F1, and displayed calcium and voltage transients similar to those in developing cardiomyocytes. These results demonstrate that cells from human amniotic fluid can be differentiated through a pluripotent state into functional cardiomyocytes.
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Affiliation(s)
| | | | - Madeline N. Monroe
- Department of Bioengineering, Rice University, Houston, TX, United States of America
| | - Xavier Legras
- Department of Molecular and Cellular Biology, Center for Cell and Gene Therapy, Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, United States of America
| | - Beatrice Bissig-Choisat
- Department of Molecular and Cellular Biology, Center for Cell and Gene Therapy, Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, United States of America
| | - Karl-Dimiter Bissig
- Department of Molecular and Cellular Biology, Center for Cell and Gene Therapy, Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, United States of America
| | - Rodrigo Ruano
- Department of Obstetrics and Gynecology, Maternal Fetal Medicine Texas Children’s Hospital, Houston, TX, United States of America
| | - Jeffrey G. Jacot
- Department of Bioengineering, Rice University, Houston, TX, United States of America
- Congenital Heart Surgery Service, Texas Children’s Hospital, Houston, TX, United States of America
- University of Colorado Denver, Department of Bioengineering, Aurora, CO, United States of America
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8
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Jiang G, Herron TJ, Di Bernardo J, Walker KA, O'Shea KS, Kunisaki SM. Human Cardiomyocytes Prior to Birth by Integration-Free Reprogramming of Amniotic Fluid Cells. Stem Cells Transl Med 2016; 5:1595-1606. [PMID: 27465073 DOI: 10.5966/sctm.2016-0016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 06/13/2016] [Indexed: 01/26/2023] Open
Abstract
: The establishment of an abundant source of autologous cardiac progenitor cells would represent a major advance toward eventual clinical translation of regenerative medicine strategies in children with prenatally diagnosed congenital heart disease. In support of this concept, we sought to examine whether functional, transgene-free human cardiomyocytes (CMs) with potential for patient-specific and autologous applications could be reliably generated following routine amniocentesis. Under institutional review board approval, amniotic fluid specimens (8-10 ml) at 20 weeks gestation were expanded and reprogrammed toward pluripotency using nonintegrating Sendai virus (SeV) expressing OCT4, SOX2, cMYC, and KLF4. Following exposure of these induced pluripotent stem cells to cardiogenic differentiation conditions, spontaneously beating amniotic fluid-derived cardiomyocytes (AF-CMs) were successfully generated with high efficiency. After 6 weeks, quantitative gene expression revealed a mixed population of differentiated atrial, ventricular, and nodal AF-CMs, as demonstrated by upregulation of multiple cardiac markers, including MYH6, MYL7, TNNT2, TTN, and HCN4, which were comparable to levels expressed by neonatal dermal fibroblast-derived CM controls. AF-CMs had a normal karyotype and demonstrated loss of NANOG, OCT4, and the SeV transgene. Functional characterization of SIRPA+ AF-CMs showed a higher spontaneous beat frequency in comparison with dermal fibroblast controls but revealed normal calcium transients and appropriate chronotropic responses after β-adrenergic agonist stimulation. Taken together, these data suggest that somatic cells present within human amniotic fluid can be used to generate a highly scalable source of functional, transgene-free, autologous CMs before a child is born. This approach may be ideally suited for patients with prenatally diagnosed cardiac anomalies. SIGNIFICANCE This study presents transgene-free human amniotic fluid-derived cardiomyocytes (AF-CMs) for potential therapy in tissue engineering and regenerative medicine applications. Using 8-10 ml of amniotic fluid harvested at 20 weeks gestation from normal pregnancies, a mixed population of atrial, ventricular, and nodal AF-CMs were reliably generated after Sendai virus reprogramming toward pluripotency. Functional characterization of purified populations of beating AF-CMs revealed normal calcium transients and appropriate chronotropic responses after β-adrenergic agonist stimulation in comparison with dermal fibroblast controls. Because AF-CMs can be generated in fewer than 16 weeks, this approach may be ideally suited for eventual clinical translation at birth in children with prenatally diagnosed cardiac anomalies.
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Affiliation(s)
- Guihua Jiang
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Pluripotent Stem Cell Laboratory, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Todd J Herron
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Julie Di Bernardo
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Kendal A Walker
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Pluripotent Stem Cell Laboratory, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - K Sue O'Shea
- Pluripotent Stem Cell Laboratory, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Shaun M Kunisaki
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Pluripotent Stem Cell Laboratory, University of Michigan Medical School, Ann Arbor, Michigan, USA
- C.S. Mott Children's Hospital and Von Voigtlander Women's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
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Affiliation(s)
- Milica Radisic
- Institute of Biomaterials and Biomedical Engineering, Department of Chemical Engineering and Applied Chemistry, University of Toronto, Canada. Heart and Stroke
- Richard Lewar Centre of Excellence, University of Toronto, Canada
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