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Jahn P, Karger RK, Soso Khalaf S, Hamad S, Peinkofer G, Sahito RGA, Pieroth S, Nitsche F, Lu J, Derichsweiler D, Brockmeier K, Hescheler J, Schmidt A, Pfannkuche KP. Engineering of cardiac microtissues by microfluidic cell encapsulation in thermoshrinking non-crosslinked PNIPAAm gels. Biofabrication 2022; 14. [PMID: 35617928 DOI: 10.1088/1758-5090/ac73b5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 05/26/2022] [Indexed: 11/11/2022]
Abstract
Multicellular agglomerates in form of irregularly shaped or spherical clusters can recapitulate cell-cell interactions and are referred to as microtissues. Microtissues gain increasing attention in several fields including cardiovascular research. Cardiac microtissues are evolving as excellent model systems for drug testing in vitro (organ-on-a-chip), are used as tissue bricks in 3D printing processes and pave the way for improved cell replacement therapies in vivo. Microtissues are formed for example in hanging drop culture or specialized microwell plates; truly scalable methods are not yet available. In this study, a novel method of encapsulation of cells in Poly-N-isopropylacrylamid (PNIPAAm) spheres is introduced. Murine induced pluripotent stem cell-derived cardiomyocytes (CMs) and bone marrow-derived mesenchymal stem cells (MSCs) were encapsulated in PNIPAAm by raising the temperature of droplets formed in a microfluidics setup above the lower critical solute temperature (LCST) of 32°C. PNIPAAM precipitates to a water-insoluble physically linked gel above the LCST and shrinks by the expulsion of water, thereby trapping the cells in a collapsing polymer network and increasing the cell density by one order of magnitude. Within 24 hours, stable cardiac microtissues were first formed and later released from their polymer shell by washout of PNIPAAm at temperatures below the LCST. Rhythmically contracting microtissues showed homogenous cell distribution, age-dependent sarcomere organizations and action potential generation. The novel approach is applicable for microtissue formation from various cell types and can be implemented into scalable workflows.
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Affiliation(s)
- Philipp Jahn
- University Hospital Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50924, GERMANY
| | - Rebecca Katharina Karger
- Center for Physiology and Pathophysiology, University of Cologne, Robert Koch Str. 39, Cologne, Nordrhein-Westfalen, 50931, GERMANY
| | - Shahab Soso Khalaf
- University Hospital Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50931, GERMANY
| | - Sarkawt Hamad
- University of Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50931, GERMANY
| | - Gabriel Peinkofer
- University Hospital Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50931, GERMANY
| | | | - Stephanie Pieroth
- Department of Chemistry, University of Cologne, Greinstr. 4-6, Koln, 50923, GERMANY
| | - Frank Nitsche
- Institute of Zoology, University of Cologne, Zülpicher Str. 47b, Cologne, Nordrhein-Westfalen, 50674, GERMANY
| | - Junqi Lu
- Department of Chemistry, University of Cologne, Greinstraße 4-6, Cologne, Nordrhein-Westfalen, 50939, GERMANY
| | - Daniel Derichsweiler
- University Hospital Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50931, GERMANY
| | - Konrad Brockmeier
- Department of Pediatric Cardiology, University Hospital of Cologne, Kerpener Str. 62, Cologne, 50924, GERMANY
| | - Jürgen Hescheler
- University Hospital Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50931, GERMANY
| | - Annette Schmidt
- Department Chemistry, University of Cologne, Greinstr. 4-6, Koln, Nordrhein-Westfalen, 50923, GERMANY
| | - Kurt Paul Pfannkuche
- University Hospital Cologne, Robert Koch Str. 39, Koln, Nordrhein-Westfalen, 50931, GERMANY
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Hussain T, Murtaza G, Metwally E, Kalhoro DH, Kalhoro MS, Rahu BA, Sahito RGA, Yin Y, Yang H, Chughtai MI, Tan B. The Role of Oxidative Stress and Antioxidant Balance in Pregnancy. Mediators Inflamm 2021; 2021:9962860. [PMID: 34616234 PMCID: PMC8490076 DOI: 10.1155/2021/9962860] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/16/2021] [Accepted: 09/04/2021] [Indexed: 12/30/2022] Open
Abstract
It has been widely known that oxidative stress disrupts the balance between reactive oxygen species (ROS) and the antioxidant system in the body. During pregnancy, the physiological generation of ROS is involved in a variety of developmental processes ranging from oocyte maturation to luteolysis and embryo implantation. While abnormal overproduction of ROS disrupts these processes resulting in reproductive failure. In addition, excessive oxidative stress impairs maternal and placental functions and eventually results in fetal loss, IUGR, and gestational diabetes mellitus. Although some oxidative stress is inevitable during pregnancy, a balancing act between oxidant and antioxidant production is necessary at different stages of the pregnancy. The review aims to highlight the importance of maintaining oxidative and antioxidant balance throughout pregnancy. Furthermore, we highlight the role of oxidative stress in pregnancy-related diseases.
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Affiliation(s)
- Tarique Hussain
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128 Hunan, China
- Animal Science Division, Nuclear Institute for Agriculture and Biology College, Pakistan Institute of Engineering and Applied Sciences (NIAB-C, PIEAS), Faisalabad 38000, Pakistan
| | - Ghulam Murtaza
- Department of Animal Reproduction, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh 70050, Pakistan
| | - Elsayed Metwally
- Department of Cytology & Histology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Dildar Hussain Kalhoro
- Department of Veterinary Microbiology, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh 70050, Pakistan
| | - Muhammad Saleem Kalhoro
- Department of Animal Products Technology, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh 70050, Pakistan
| | - Baban Ali Rahu
- Department of Animal Reproduction, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh 70050, Pakistan
| | | | - Yulong Yin
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125 Hunan, China
| | - Huansheng Yang
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Muhammad Ismail Chughtai
- Animal Science Division, Nuclear Institute for Agriculture and Biology College, Pakistan Institute of Engineering and Applied Sciences (NIAB-C, PIEAS), Faisalabad 38000, Pakistan
| | - Bie Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128 Hunan, China
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3
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Hanna M, Sahito RGA, Rateb M, Kachiwal AB, Seddiek HA, Bhutto B, Hescheler J. Generation of transgene-free induced pluripotent stem cells from cardiac fibroblasts of goat embryos. J Stem Cells Regen Med 2020; 16:34-43. [PMID: 33414579 DOI: 10.46582/jsrm.1602007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 04/11/2020] [Indexed: 11/19/2022]
Abstract
Induced pluripotent stem cells (iPSCs) hold a great potential for therapeutic regenerative medicine. The aim of this study was to generate induced pluripotent stem cells from goat embryonic cardiac tissue derived fibroblasts. The isolated cardiac fibroblasts from the cardiac tissue of goat embryos were positive for alfa smooth muscle actin, vimentin and discoidin domain receptor2. From these cells, we generated transgene free iPSCs using piggyBac transposons / transposase using five transcription factors (Oct4, Sox2, Klf, Myc and Lin 28). The generated iPSCs were SSEA1, SSEA4 and Oct4 positive. They were cultured on neofeeders using 20% Serum replacement - IMDM with bFGF. They could form cystic and compact embryoid bodies that showed differentiated ectodermal and mesodermal like cells when cultured using 20% FBS-IMDM without bFGF. The iPSCs, generated in the frame of this approach were produced without the use of integrating virus and the reprogramming transgenes were removed at the end of the process. Though there were limitations in the approach used, a substantial sign of reprogramming was obtained.
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Affiliation(s)
- Mira Hanna
- Institute of Neurophysiology, University of Cologne, Robert-Koch-Strasse 39, 50931 Cologne, Germany.,Department of physiology, Faculty of medicine (Kasr El-Aini) Cairo University, El-Maniel, Cairo 11451, Egypt
| | | | - Moshira Rateb
- Department of physiology, Faculty of medicine (Kasr El-Aini) Cairo University, El-Maniel, Cairo 11451, Egypt
| | - Allah Bux Kachiwal
- Department of Veterinary Physiology and Biochemistry, Sindh Agriculture University Tandojam, Pakistan
| | - Hanan A Seddiek
- Department of physiology, Faculty of medicine (Kasr El-Aini) Cairo University, El-Maniel, Cairo 11451, Egypt
| | - Bachal Bhutto
- Department of Veterinary Parasitology, Sindh Agriculture University Tandojam, Pakistan
| | - Jürgen Hescheler
- Institute of Neurophysiology, University of Cologne, Robert-Koch-Strasse 39, 50931 Cologne, Germany
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4
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Sahito RGA, Sheng X, Maass M, Mikhael N, Hamad S, Heras-Bautista CO, Derichsweiler D, Spitkovsky D, Suhr F, Khalil M, Brockmeier K, Halbach M, Saric T, Hescheler J, Krausgrill B, Pfannkuche K. In Vitro Grown Micro-Tissues for Cardiac Cell Replacement Therapy in Vivo. Cell Physiol Biochem 2019; 52:1309-1324. [PMID: 31050280 DOI: 10.33594/000000092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 04/29/2019] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND/AIMS Different approaches have been considered to improve heart reconstructive medicine and direct delivery of pluripotent stem cell-derived cardiomyocytes (PSC-CMs) appears to be highly promising in this context. However, low cell persistence post-transplantation remains a bottleneck hindering the approach. Here, we present a novel strategy to overcome the low engraftment of PSC-CMs during the early post-transplantation phase into the myocardium of both healthy and cryoinjured syngeneic mice. METHODS Adult murine bone marrow mesenchymal stem cells (MSCs) and PSC-CMs were co-cultured on thermo-responsive polymers and later detached through temperature reduction, resulting in the protease-free generation of cell clusters (micro-tissues) composed of both cells types. Micro-tissues were transplanted into healthy and cryo-injured murine hearts. Short term cell retention was quantified by real-time-PCR. Longitudinal cell tracking was performed by bioluminescence imaging for four weeks. Transplanted cells were further detected by immunofluorescence staining of tissue sections. RESULTS We demonstrated that in vitro grown micro-tissues consisting of PSC-CMs and MSCs can increase cardiomyocyte retention by >10fold one day post-transplantation, but could not fully rescue a further cell loss between day 1 and day 2. Neutrophil infiltration into the transplanted area was detected in healthy hearts and could be attributed to the cellular implantation rather than tissue damage exerted by the transplantation cannula. Injected PSC-CMs were tracked and successfully detected for up to four weeks by bioluminescence imaging. CONCLUSION This approach demonstrated that in vitro grown micro-tissues might contribute to the development of cardiac cell replacement therapies.
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Affiliation(s)
- Raja Ghazanfar Ali Sahito
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Xiaowu Sheng
- Hunan Cancer Hospital and Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Martina Maass
- Department III of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Nelly Mikhael
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Sarkawt Hamad
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Carlos O Heras-Bautista
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Daniel Derichsweiler
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Dimitry Spitkovsky
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Frank Suhr
- Exercise Physiology Research Group, Department of Movement Sciences, Group of Biomedical Sciences, KU Leuven, Leuven, Belgium
| | - Markus Khalil
- Department for Pediatric Cardiology, University of Giessen, Giessen, Germany
| | - Konrad Brockmeier
- Department for Pediatric Cardiology, University Hospital of Cologne, Cologne, Germany
| | - Marcel Halbach
- Department III of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Tomo Saric
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Jürgen Hescheler
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Benjamin Krausgrill
- Department III of Internal Medicine, University Hospital of Cologne, Cologne, Germany,
| | - Kurt Pfannkuche
- Center for Physiology and Pathophysiology, Institute of Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany.,Department for Pediatric Cardiology, University Hospital of Cologne, Cologne, Germany,
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Frank S, Ahuja G, Bartsch D, Russ N, Yao W, Kuo JCC, Derks JP, Akhade VS, Kargapolova Y, Georgomanolis T, Messling JE, Gramm M, Brant L, Rehimi R, Vargas NE, Kuroczik A, Yang TP, Sahito RGA, Franzen J, Hescheler J, Sachinidis A, Peifer M, Rada-Iglesias A, Kanduri M, Costa IG, Kanduri C, Papantonis A, Kurian L. yylncT Defines a Class of Divergently Transcribed lncRNAs and Safeguards the T-mediated Mesodermal Commitment of Human PSCs. Cell Stem Cell 2019; 24:318-327.e8. [PMID: 30554961 DOI: 10.1016/j.stem.2018.11.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 07/31/2018] [Accepted: 11/01/2018] [Indexed: 01/04/2023]
Abstract
Human protein-coding genes are often accompanied by divergently transcribed non-coding RNAs whose functions, especially in cell fate decisions, are poorly understood. Using an hESC-based cardiac differentiation model, we define a class of divergent lncRNAs, termed yin yang lncRNAs (yylncRNAs), that mirror the cell-type-specific expression pattern of their protein-coding counterparts. yylncRNAs are preferentially encoded from the genomic loci of key developmental cell fate regulators. Most yylncRNAs are spliced polyadenylated transcripts showing comparable expression patterns in vivo in mouse and in human embryos. Signifying their developmental function, the key mesoderm specifier BRACHYURY (T) is accompanied by yylncT, which localizes to the active T locus during mesoderm commitment. yylncT binds the de novo DNA methyltransferase DNMT3B, and its transcript is required for activation of the T locus, with yylncT depletion specifically abolishing mesodermal commitment. Collectively, we report a lncRNA-mediated regulatory layer safeguarding embryonic cell fate transitions.
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Affiliation(s)
- Stefan Frank
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Gaurav Ahuja
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Deniz Bartsch
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Nicole Russ
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Wenjie Yao
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Joseph Chao-Chung Kuo
- Institute for Computational Genomics, Joint Research Center for Computational Biomedicine, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Jens-Peter Derks
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Vijay Suresh Akhade
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Yulia Kargapolova
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Department of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Theodore Georgomanolis
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Department of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Jan-Erik Messling
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Marie Gramm
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Lilija Brant
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Department of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Rizwan Rehimi
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Natalia Emilse Vargas
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Alina Kuroczik
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Tsun-Po Yang
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
| | | | - Julia Franzen
- RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Juergen Hescheler
- Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany
| | - Agapios Sachinidis
- Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany
| | - Martin Peifer
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
| | - Alvaro Rada-Iglesias
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Meena Kanduri
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Ivan G Costa
- Institute for Computational Genomics, Joint Research Center for Computational Biomedicine, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Chandrasekhar Kanduri
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Argyris Papantonis
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Department of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Leo Kurian
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Neurophysiology, University of Cologne, 50931 Cologne, Germany; CECAD, Cologne Cluster of Excellence in Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, 50931 Cologne, Germany.
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Ghazanfar Ali Sahito R, Sureshkumar P, Sotiriadou I, Perumal Srinivasan S, Sabour D, Hescheler J, Pfannkuche K, Sachinidis A. The Potential Application of Biomaterials in Cardiac Stem Cell Therapy. Curr Med Chem 2016; 23:589-602. [DOI: 10.2174/092986732306160303151041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 12/03/2015] [Accepted: 01/05/2016] [Indexed: 11/22/2022]
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7
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Baumgartner S, Halbach M, Krausgrill B, Maass M, Srinivasan SP, Sahito RGA, Peinkofer G, Nguemo F, Müller-Ehmsen J, Hescheler J. Electrophysiological and morphological maturation of murine fetal cardiomyocytes during electrical stimulation in vitro. J Cardiovasc Pharmacol Ther 2014; 20:104-12. [PMID: 24917562 DOI: 10.1177/1074248414536273] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of this study was to investigate whether continuous electrical stimulation affects electrophysiological properties and cell morphology of fetal cardiomyocytes (FCMs) in culture. Fetal cardiomyocytes at day 14.5 post coitum were harvested from murine hearts and electrically stimulated for 6 days in culture using a custom-made stimulation chamber. Subsequently, action potentials of FCM were recorded with glass microelectrodes. Immunostainings of α-Actinin, connexin 43, and vinculin were performed. Expression of ion channel subunits Kcnd2, Slc8a1, Cacna1, Kcnh2, and Kcnb1 was analyzed by quantitative reverse-transcriptase polymerase chain reaction. Action potential duration to 50% and 90% repolarization (APD50 and APD90) of electrically stimulated FCMs were significantly decreased when compared to nonstimulated control FCM. Alignment of cells was significantly higher in stimulated FCM when compared to control FCM. The expression of connexin 43 was significantly increased in stimulated FCM when compared to control FCM. The ratio between cell length and cell width of the stimulated FCM was significantly higher than in control FCM. Kcnh2 and Kcnd2 were upregulated in stimulated FCM when compared to control FCM. Expression of Slc8a1, Cacna1c, and Kcnb1 was not different in stimulated and control FCMs. The decrease in APD50 observed after electrical stimulation of FCM in vitro corresponds to the electrophysiological maturation of FCM in vivo. Expression levels of ion channels suggest that some important but not all aspects of the complex process of electrophysiological maturation are promoted by electrical stimulation. Parallel alignment, increased connexin 43 expression, and elongation of FCM are signs of a morphological maturation induced by electrical stimulation.
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Affiliation(s)
- Sven Baumgartner
- Department of Internal Medicine III-Cardiology, University of Cologne, Cologne, Germany Institute of Neurophysiology, University of Cologne, Cologne, Germany
| | - Marcel Halbach
- Department of Internal Medicine III-Cardiology, University of Cologne, Cologne, Germany Institute of Neurophysiology, University of Cologne, Cologne, Germany
| | - Benjamin Krausgrill
- Department of Internal Medicine III-Cardiology, University of Cologne, Cologne, Germany Institute of Neurophysiology, University of Cologne, Cologne, Germany
| | - Martina Maass
- Department of Internal Medicine III-Cardiology, University of Cologne, Cologne, Germany
| | | | | | - Gabriel Peinkofer
- Department of Internal Medicine III-Cardiology, University of Cologne, Cologne, Germany Institute of Neurophysiology, University of Cologne, Cologne, Germany
| | - Filomain Nguemo
- Institute of Neurophysiology, University of Cologne, Cologne, Germany
| | | | - Jürgen Hescheler
- Institute of Neurophysiology, University of Cologne, Cologne, Germany
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8
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Halbach M, Baumgartner S, Sahito RGA, Krausgrill B, Maass M, Peinkofer G, Ladage D, Hescheler J, Müller-Ehmsen J. Cell persistence and electrical integration of transplanted fetal cardiomyocytes from different developmental stages. Int J Cardiol 2014; 171:e122-4. [PMID: 24439862 DOI: 10.1016/j.ijcard.2013.12.115] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 12/20/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Marcel Halbach
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Institute of Neurophysiology, University of Cologne, Robert-Koch-Str. 39, 50931 Cologne, Germany
| | - Sven Baumgartner
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Institute of Neurophysiology, University of Cologne, Robert-Koch-Str. 39, 50931 Cologne, Germany
| | | | - Benjamin Krausgrill
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Institute of Neurophysiology, University of Cologne, Robert-Koch-Str. 39, 50931 Cologne, Germany
| | - Martina Maass
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany
| | - Gabriel Peinkofer
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Institute of Neurophysiology, University of Cologne, Robert-Koch-Str. 39, 50931 Cologne, Germany
| | - Dennis Ladage
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany
| | - Jürgen Hescheler
- Institute of Neurophysiology, University of Cologne, Robert-Koch-Str. 39, 50931 Cologne, Germany
| | - Jochen Müller-Ehmsen
- Department of Internal Medicine III, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany.
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Halbach M, Krausgrill B, Hannes T, Wiedey M, Peinkofer G, Baumgartner S, Sahito RGA, Pfannkuche K, Pillekamp F, Reppel M, Müller-Ehmsen J, Hescheler J. Time-course of the electrophysiological maturation and integration of transplanted cardiomyocytes. J Mol Cell Cardiol 2012; 53:401-8. [PMID: 22728218 DOI: 10.1016/j.yjmcc.2012.06.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 05/15/2012] [Accepted: 06/13/2012] [Indexed: 12/30/2022]
Abstract
Electrophysiological maturation and integration of transplanted cardiomyocytes are essential to enhance safety and efficiency of cell replacement therapy. Yet, little is known about these important processes. The aim of our study was to perform a detailed analysis of electrophysiological maturation and integration of transplanted cardiomyocytes. Fetal cardiomyocytes expressing enhanced green fluorescent protein were transplanted into cryoinjured mouse hearts. At 6, 9 and 12 days after transplantation, viable slices of recipient hearts were prepared and action potentials of transplanted and host cardiomyocytes within the slices were recorded by microelectrodes. In transplanted cells embedded in healthy host myocardium, action potential duration at 50% repolarization (APD50) decreased from 32.2 ± 3.3 ms at day 6 to 27.9 ± 2.6 ms at day 9 and 19.6 ± 1.6 ms at day 12. The latter value matched the APD50 of host cells (20.5 ± 3.2 ms, P=0.78). Integration improved in the course of time: 26% of cells at day 6 and 53% at day 12 revealed no conduction blocks up to a stimulation frequency of 10 Hz. APD50 was inversely correlated to the quality of electrical integration. In transplanted cells embedded into the cryoinjury, which showed no electrical integration, APD50 was 49.2 ± 4.3 ms at day 12. Fetal cardiomyocytes transplanted into healthy myocardium integrate electrically and mature after transplantation, their action potential properties after 12 days are comparable to those of host cardiomyocytes. Quality of electrical integration improves over time, but conduction blocks still occur at day 12 after transplantation. The pace of maturation correlates with the quality of electrical integration. Transplanted cells embedded in cryoinjured tissue still possess immature electrophysiological properties after 12 days.
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Affiliation(s)
- Marcel Halbach
- Department of Internal Medicine III, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany
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