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Ergui I, Griffith N, Salama J, Ebner B, Dangl M, Vincent L, Razuk V, Marzouka G, Colombo R. In-Hospital Outcomes in Patients With Non-ST Segment Elevation Myocardial Infarction and Concomitant Neurodevelopmental Disorders in the United States: Insights From the National Inpatient Sample 2011-2020. Cureus 2024; 16:e60289. [PMID: 38746481 PMCID: PMC11093150 DOI: 10.7759/cureus.60289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2024] [Indexed: 05/16/2024] Open
Abstract
Patients with neurodevelopmental disorders (NDDs) encounter significant barriers to receiving quality health care, particularly for acute conditions such as non-ST segment elevation myocardial infarction (NSTEMI). This study addresses the critical gap in knowledge regarding in-hospital outcomes and the use of invasive therapies in this demographic. By analyzing data from the National Inpatient Sample database from 2011 to 2020 using the International Classification of Diseases, Ninth Edition (ICD-9) and Tenth Edition (ICD-10) codes, we identified patients with NSTEMI, both with and without NDDs, and compared baseline characteristics, in-hospital outcomes, and the application of invasive treatments. The analysis involved a weighted sample of 7,482,216 NSTEMI hospitalizations, of which 30,168 (0.40%) patients had NDDs. There were significantly higher comorbidity-adjusted odds of in-hospital mortality, cardiac arrest, endotracheal intubation, infectious complications, ventricular arrhythmias, and restraint use among the NDD cohort. Conversely, this group exhibited lower adjusted odds of undergoing left heart catheterization, percutaneous coronary intervention, or coronary artery bypass graft surgery. These findings underscore the disparities faced by patients with NDDs in accessing invasive cardiac interventions, highlighting the need for further research to address these barriers and improve care quality for this vulnerable population.
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Affiliation(s)
- Ian Ergui
- Internal Medicine, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - Nayrana Griffith
- Cardiology, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - Joshua Salama
- Internal Medicine, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - Bertrand Ebner
- Cardiology, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - Michael Dangl
- Internal Medicine, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - Louis Vincent
- Cardiology, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - Victor Razuk
- Cardiology, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
| | - George Marzouka
- Cardiology, Miami Department of Veterans Affairs, Miami, USA
| | - Rosario Colombo
- Cardiology, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, USA
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2
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Cao Y, Zheng M, Sewani MA, Wang J. The miR-17-92 cluster in cardiac health and disease. Birth Defects Res 2024; 116:e2273. [PMID: 37984445 DOI: 10.1002/bdr2.2273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
MicroRNAs (miRs) are small noncoding RNAs that play important roles in both physiological and pathological processes through post-transcriptional regulation. The miR-17-92 cluster includes six individual members: miR-17, miR-18a, miR-19a, miR-19b-1, miR-20a, and miR-92a-1. The miR-17-92 cluster has been extensively studied and reported to broadly function in cancer biology, immunology, neurology, pulmonology, and cardiology. This review focuses on its roles in heart development and cardiac diseases. We briefly introduce the nature of the miR-17-92 cluster and its crucial roles in both normal development and the pathogenesis of various diseases. We summarize the recent progress in understanding the versatile roles of miR-17-92 during cardiac development, regeneration, and aging. Additionally, we highlight the indispensable roles of the miR-17-92 cluster in pathogenesis and therapeutic potential in cardiac birth defects and adult cardiac diseases.
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Affiliation(s)
- Yuhan Cao
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, The University of Texas, Houston, Texas, USA
| | - Mingjie Zheng
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Maham A Sewani
- Department of BioSciences, Wiess School of Natural Sciences, Rice University, Houston, Texas, USA
| | - Jun Wang
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, The University of Texas, Houston, Texas, USA
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3
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Gabriel GC, Wu YL, Lo CW. Establishment of Cardiac Laterality. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1441:167-183. [PMID: 38884711 DOI: 10.1007/978-3-031-44087-8_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Formation of the vertebrate heart with its complex arterial and venous connections is critically dependent on patterning of the left-right axis during early embryonic development. Abnormalities in left-right patterning can lead to a variety of complex life-threatening congenital heart defects. A highly conserved pathway responsible for left-right axis specification has been uncovered. This pathway involves initial asymmetric activation of a nodal signaling cascade at the embryonic node, followed by its propagation to the left lateral plate mesoderm and activation of left-sided expression of the Pitx2 transcription factor specifying visceral organ asymmetry. Intriguingly, recent work suggests that cardiac laterality is encoded by intrinsic cell and tissue chirality independent of Nodal signaling. Thus, Nodal signaling may be superimposed on this intrinsic chirality, providing additional instructive cues to pattern cardiac situs. The impact of intrinsic chirality and the perturbation of left-right patterning on myofiber organization and cardiac function warrants further investigation. We summarize recent insights gained from studies in animal models and also some human clinical studies in a brief overview of the complex processes regulating cardiac asymmetry and their impact on cardiac function and the pathogenesis of congenital heart defects.
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Affiliation(s)
- George C Gabriel
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Yijen L Wu
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Cecilia W Lo
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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4
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Shafi O, Siddiqui G, Jaffry HA. The benign nature and rare occurrence of cardiac myxoma as a possible consequence of the limited cardiac proliferative/ regenerative potential: a systematic review. BMC Cancer 2023; 23:1245. [PMID: 38110859 PMCID: PMC10726542 DOI: 10.1186/s12885-023-11723-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND Cardiac Myxoma is a primary tumor of heart. Its origins, rarity of the occurrence of primary cardiac tumors and how it may be related to limited cardiac regenerative potential, are not yet entirely known. This study investigates the key cardiac genes/ transcription factors (TFs) and signaling pathways to understand these important questions. METHODS Databases including PubMed, MEDLINE, and Google Scholar were searched for published articles without any date restrictions, involving cardiac myxoma, cardiac genes/TFs/signaling pathways and their roles in cardiogenesis, proliferation, differentiation, key interactions and tumorigenesis, with focus on cardiomyocytes. RESULTS The cardiac genetic landscape is governed by a very tight control between proliferation and differentiation-related genes/TFs/pathways. Cardiac myxoma originates possibly as a consequence of dysregulations in the gene expression of differentiation regulators including Tbx5, GATA4, HAND1/2, MYOCD, HOPX, BMPs. Such dysregulations switch the expression of cardiomyocytes into progenitor-like state in cardiac myxoma development by dysregulating Isl1, Baf60 complex, Wnt, FGF, Notch, Mef2c and others. The Nkx2-5 and MSX2 contribute predominantly to both proliferation and differentiation of Cardiac Progenitor Cells (CPCs), may possibly serve roles based on the microenvironment and the direction of cell circuitry in cardiac tumorigenesis. The Nkx2-5 in cardiac myxoma may serve to limit progression of tumorigenesis as it has massive control over the proliferation of CPCs. The cardiac cell type-specific genetic programming plays governing role in controlling the tumorigenesis and regenerative potential. CONCLUSION The cardiomyocytes have very limited proliferative and regenerative potential. They survive for long periods of time and tightly maintain the gene expression of differentiation genes such as Tbx5, GATA4 that interact with tumor suppressors (TS) and exert TS like effect. The total effect such gene expression exerts is responsible for the rare occurrence and benign nature of primary cardiac tumors. This prevents the progression of tumorigenesis. But this also limits the regenerative and proliferative potential of cardiomyocytes. Cardiac Myxoma develops as a consequence of dysregulations in these key genes which revert the cells towards progenitor-like state, hallmark of CM. The CM development in carney complex also signifies the role of TS in cardiac cells.
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Affiliation(s)
- Ovais Shafi
- Sindh Medical College - Jinnah Sindh Medical University / Dow University of Health Sciences, Karachi, Pakistan.
| | - Ghazia Siddiqui
- Sindh Medical College - Jinnah Sindh Medical University / Dow University of Health Sciences, Karachi, Pakistan
| | - Hassam A Jaffry
- Sindh Medical College - Jinnah Sindh Medical University / Dow University of Health Sciences, Karachi, Pakistan
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5
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Wang F, Yin L, Zhang W, Tang Y, Wang X, Huang C. The method of sinus node-like pacemaker cells from human induced pluripotent stem cells by BMP and Wnt signaling. Cell Biol Toxicol 2023; 39:2725-2741. [PMID: 36856942 DOI: 10.1007/s10565-023-09797-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/15/2023] [Indexed: 03/02/2023]
Abstract
The embryonic development of sinus nodes (SAN) is co-regulated by multiple signaling pathways. Among these, the bone morphogenetic protein (BMP) and Wnt signaling pathways are involved in the development of SAN. In this study, the effects of BMP and Wnt signaling on the differentiation of SAN-like pacemaker cells (SANLPCs) were investigated. Human induced pluripotent stem cells (hiPSCs) were divided into four groups: control, BMP4, CHIR-3, and BMP4 + CHIR (CHIR: a Wnt signaling activator). The samples were tested at day (D) 15 of differentiation. The final protocol for the activation of BMP signaling at D0-D3 and reactivation of Wnt signaling at D5-D7 in the differentiation of hiPSCs were determined. The results showed that the mRNA levels of pacemaker markers (TBX18, SHOX2, TBX3, HCN4, and HCN1) were higher in the BMP4 + CHIR group than in the control group, and working myocardial genes were downregulated. The immunofluorescence assay revealed that the expression of SHOX2 and HCN4 increased in the BMP4 + CHIR group compared to that in the other groups. In addition, the results of patch clamps revealed that a funny current of higher density and typical SAN action potentials were recorded, except in the control group, in which the L-type calcium current was higher in the BMP4 + CHIR group than in the other groups. Finally, the proportion of SANLPCs (cTnT+ NKX2.5-) was further enhanced by the combination of BMP4 and CHIR treatment. In summary, the combination of BMP and Wnt signaling promotes the differentiation of SANLPCs from hiPSCs.
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Affiliation(s)
- Fengyuan Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, 238 Jiefang Road, Wuchang, Wuhan, Hubei, 430060, People's Republic of China
| | - Lin Yin
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, 238 Jiefang Road, Wuchang, Wuhan, Hubei, 430060, People's Republic of China
| | - Wei Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, 238 Jiefang Road, Wuchang, Wuhan, Hubei, 430060, People's Republic of China
| | - Yanhong Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, 238 Jiefang Road, Wuchang, Wuhan, Hubei, 430060, People's Republic of China
| | - Xi Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, 238 Jiefang Road, Wuchang, Wuhan, Hubei, 430060, People's Republic of China
| | - Congxin Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, 238 Jiefang Road, Wuchang, Wuhan, Hubei, 430060, People's Republic of China.
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6
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Park J, Hong T, An G, Park H, Song G, Lim W. Triadimenol promotes the production of reactive oxygen species and apoptosis with cardiotoxicity and developmental abnormalities in zebrafish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160761. [PMID: 36502969 DOI: 10.1016/j.scitotenv.2022.160761] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/30/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Various types of fungicides, especially triazole fungicides, are used to prevent fungal diseases on farmlands. However, the developmental toxicity of one of the triazole fungicides, triadimenol, remains unclear. Therefore, we used the zebrafish animal model, a representative toxicological model, to investigate it. Triadimenol induced morphological alterations in the eyes and body length along with yolk sac and heart edema. It also stimulated the production of reactive oxygen species and expression of inflammation-related genes and caused apoptosis in the anterior regions of zebrafish, especially in the heart. The phosphorylation levels of Akt, ERK, JNK, and p38 proteins involved in the PI3K and MAPK pathways, which are important for the development process, were also reduced by triadimenol. These changes led to malformation of the heart and vascular structures, as observed in the flk1:eGFP transgenic zebrafish models and a reduction in the heart rate. In addition, the expression of genes associated with cardiac and vascular development was also reduced. Therefore, we elucidated the mechanisms associated with triadimenol toxicity that leads to various abnormalities and developmental toxicity in zebrafish.
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Affiliation(s)
- Junho Park
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Taeyeon Hong
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Garam An
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Hahyun Park
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Gwonhwa Song
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Whasun Lim
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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7
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Sogo T, Nakao S, Tsukamoto T, Ueyama T, Harada Y, Ihara D, Ishida T, Nakahara M, Hasegawa K, Akagi Y, Kida YS, Nakagawa O, Nagamune T, Kawahara M, Kawamura T. Canonical Wnt signaling activation by chimeric antigen receptors for efficient cardiac differentiation from mouse embryonic stem cells. Inflamm Regen 2023; 43:11. [PMID: 36765434 PMCID: PMC9912504 DOI: 10.1186/s41232-023-00258-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 01/15/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Canonical Wnt signaling is involved in a variety of biological processes including stem cell renewal and differentiation, embryonic development, and tissue regeneration. Previous studies reported the stage-specific roles of the Wnt signaling in heart development. Canonical Wnt signal activation by recombinant Wnt3a in the early phase of differentiation enhances the efficiency of myocardial cell production from pluripotent stem cells. However, the hydrophobicity of Wnt proteins results in high cost to produce the recombinant proteins and presents an obstacle to their preparation and application for therapeutics, cell therapy, or molecular analysis of Wnt signaling. METHODS To solve this problem, we generated an inexpensive molecule-responsive differentiation-inducing chimeric antigen receptor (designated as diCAR) that can activate Wnt3a signaling. The extracellular domains of low-density-lipoprotein receptor-related protein 6 (LRP6) and frizzeled-8 (FZD8) were replaced with single-chain Fv of anti-fluorescein (FL) antibody, which can respond to FL-conjugated bovine serum albumin (BSA-FL) as a cognate ligand. We then analyzed the effect of this diCAR on Wnt signal activation and cardiomyocyte differentiation of mouse embryonic stem cells in response to BSA-FL treatment. RESULTS Embryonic stem cell lines stably expressing this paired diCAR, named Wnt3a-diCAR, showed TCF/β-catenin-dependent transactivation by BSA-FL in a dose-dependent manner. Treatment with either Wnt3a recombinant protein or BSA-FL in the early phase of differentiation revealed similar changes of global gene expressions and resulted in efficient myocardial cell differentiation. Furthermore, BSA-FL-mediated signal activation was not affected by a Wnt3a antagonist, Dkk1, suggesting that the signal transduction via Wnt3a-diCAR is independent of endogenous LRP6 or FZD8. CONCLUSION We anticipate that Wnt3a-diCAR enables target-specific signal activation, and could be an economical and powerful tool for stem cell-based regeneration therapy.
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Affiliation(s)
- Takahiro Sogo
- grid.262576.20000 0000 8863 9909Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan
| | - Shu Nakao
- grid.262576.20000 0000 8863 9909Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan ,grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan ,grid.416698.4Division of Translational Research, Kyoto Medical Center, National Hospital Organization, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto, 612-8555 Japan
| | - Tasuku Tsukamoto
- grid.262576.20000 0000 8863 9909Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan ,grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan
| | - Tomoe Ueyama
- grid.262576.20000 0000 8863 9909Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan ,grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan
| | - Yukihiro Harada
- grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan ,grid.410796.d0000 0004 0378 8307Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565 Japan
| | - Dai Ihara
- grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan ,grid.410796.d0000 0004 0378 8307Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565 Japan
| | - Tomoaki Ishida
- grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan
| | - Masato Nakahara
- grid.262576.20000 0000 8863 9909Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577 Japan
| | - Koji Hasegawa
- grid.416698.4Division of Translational Research, Kyoto Medical Center, National Hospital Organization, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto, 612-8555 Japan
| | - Yuka Akagi
- grid.208504.b0000 0001 2230 7538Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 Japan ,grid.20515.330000 0001 2369 4728Tsukuba Life Science Innovation Program (T-LSI), School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572 Japan
| | - Yasuyuki S. Kida
- grid.208504.b0000 0001 2230 7538Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 Japan ,grid.20515.330000 0001 2369 4728School of Integrative & Global Majors, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572 Japan
| | - Osamu Nakagawa
- grid.410796.d0000 0004 0378 8307Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565 Japan
| | - Teruyuki Nagamune
- grid.26999.3d0000 0001 2151 536XDepartment of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656 Japan
| | - Masahiro Kawahara
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan. .,Laboratory of Cell Vaccine, Center for Vaccine and Adjuvant Research, National Institutes of Biomedical Innovation, Health, and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Osaka, Ibaraki City, 567-0085, Japan.
| | - Teruhisa Kawamura
- Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan. .,Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan. .,Division of Translational Research, Kyoto Medical Center, National Hospital Organization, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto, 612-8555, Japan.
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Yang W, Lu S, Peng L, Zhang Z, Zhang Y, Guo D, Ma F, Hua Y, Chen X. Integrated analysis of necroptosis-related genes for evaluating immune infiltration and colon cancer prognosis. Front Immunol 2022; 13:1085038. [PMID: 36618366 PMCID: PMC9814966 DOI: 10.3389/fimmu.2022.1085038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Background Colon cancer (CC) is the second most common gastrointestinal malignancy. About one in five patients have already developed distant metastases at the time of initial diagnosis, and up to half of patients develop distant metastases from initial local disease, which leads to a poor prognosis for CC patients. Necroptosis plays a key role in promoting tumor growth in different tumors. The purpose of this study was to construct a prognostic model composed of necroptosis-related genes (NRGs) in CC. Methods The Cancer Genome Atlas was used to obtain information on clinical features and gene expression. Gene expression differential analysis, weighted gene co-expression network analysis, univariate Cox regression analysis and the least absolute shrinkage and selection operator regression algorithm were utilized to identify prognostic NRGs. Thereafter, a risk scoring model was established based on the NRGs. Biological processes and pathways were identified by gene ontology and gene set enrichment analysis (GSEA). Further, protein-protein interaction and ceRNA networks were constructed based on mRNA-miRNA-lncRNA. Finally, the effect of necroptosis related risk score on different degrees of immune cell infiltration was evaluated. Results CALB1, CHST13, and SLC4A4 were identified as NRGs of prognostic significance and were used to establish a risk scoring model. The time-dependent receiver operating characteristic curve analysis revealed that the model could well predict the 1-, 3-, and 5-year overall survival (OS). Further, GSEA suggested that the NRGs may participate in biological processes, such as the WNT pathway and JAK-Stat pathway. Eight key hub genes were identified, and a ceRNA regulatory network, which comprised 1 lncRNA, 5 miRNAs and 3 mRNAs, was constructed. Immune infiltration analysis revealed that the low-risk group had significantly higher immune-related scores than the high-risk group. A nomogram of the model was constructed based on the risk score, necroptosis, and the clinicopathological features (age and TNM stage). The calibration curves implied that the model was effective at predicting the 1-, 3-, and 5-year OS of CC. Conclusion Our NRG-based prognostic model can assist in the evaluation of CC prognosis and the identification of therapeutic targets for CC.
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Affiliation(s)
- Wei Yang
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Shuaibing Lu
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Liangqun Peng
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Zhandong Zhang
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Yonglei Zhang
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Dandan Guo
- Department of Radiology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Fei Ma
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Yawei Hua
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Xiaobing Chen
- Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China,Zhengzhou Key Laboratory for Precision Therapy of Gastrointestinal Cancer, Zhengzhou, China,*Correspondence: Xiaobing Chen,
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9
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Li YH, Wu MH, Lee WJ, Lee IT. A Synergistic Effect between Plasma Dickkopf-1 and Obstructive Coronary Artery Disease on the Prediction of Major Adverse Cardiac Events in Patients with Angina: An Observational Study. Biomolecules 2022; 12:biom12101408. [PMID: 36291617 PMCID: PMC9599804 DOI: 10.3390/biom12101408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/19/2022] [Accepted: 09/29/2022] [Indexed: 11/25/2022] Open
Abstract
The canonical β-catenin-dependent wingless (Wnt) pathway is associated with endothelial function. We examined the effect of plasma dickkopf-1 (DKK-1), an inhibitor of the Wnt pathway, on the prediction of major adverse cardiac events (MACEs). We enrolled patients who had undergone selective coronary angiography for angina. DKK-1 levels were determined using plasma collected at the outpatient visit after fasting. MACEs served as the primary endpoint. All 470 enrolled patients were divided into four groups according to their median plasma DKK-1 levels and the presence of obstructive coronary artery disease (CAD). Forty-eight patients reached the primary endpoint during a median follow-up time of 4.8 years. Kaplan–Meier survival analysis indicated that the group with high DKK-1 and obstructive CAD had a significantly higher mortality rate than the other three groups (log-rank test p = 0.001). Compared with the low plasma DKK-1 without significant coronary obstruction group, the high DKK-1 with obstructive CAD group had a hazard ratio of 10.640 (95% confidence interval: 1.350–83.874) for MACEs, as determined by multivariable Cox proportional hazard regression analysis. In conclusion, we observed a synergistic effect between high plasma DKK-1 and obstructive CAD on the prediction of MACEs in patients with angina.
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Affiliation(s)
- Yu-Hsuan Li
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- Department of Computer Science & Information Engineering, National Taiwan University, Taipei 106216, Taiwan
| | - Min-Huan Wu
- Bachelor of Science in Senior Wellness and Sport Science, Tunghai University, Taichung 407224, Taiwan
- Senior Life and Innovation Technology Center, Tunghai University, Taichung 407224, Taiwan
- Life Science Research Center, Tunghai University, Taichung 407224, Taiwan
| | - Wen-Jane Lee
- Department of Medical Research, Taichung Veterans General Hospital, Taichung 407219, Taiwan
| | - I-Te Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung 402306, Taiwan
- Correspondence:
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10
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Assimopoulos S, Hammill C, Fernandes DJ, Spencer Noakes TL, Zhou YQ, Nutter LMJ, Ellegood J, Anagnostou E, Sled JG, Lerch JP. Genetic mouse models of autism spectrum disorder present subtle heterogenous cardiac abnormalities. Autism Res 2022; 15:1189-1208. [PMID: 35445787 PMCID: PMC9325472 DOI: 10.1002/aur.2728] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/16/2022] [Accepted: 03/28/2022] [Indexed: 12/13/2022]
Abstract
Autism spectrum disorder (ASD) and congenital heart disease (CHD) are linked on a functional and genetic level. Most work has investigated CHD‐related neurodevelopmental abnormalities. Cardiac abnormalities in ASD have been less studied. We investigated the prevalence of cardiac comorbidities relative to ASD genetic contributors. Using high frequency ultrasound imaging, we screened 9 ASD‐related genetic mouse models (Arid1b(+/−), Chd8(+/−), 16p11.2 (deletion), Sgsh(+/−), Sgsh(−/−), Shank3 Δexon 4–9(+/−), Shank3 Δexon 4–9(−/−), Fmr1(−/−), Vps13b(+/−)), and pooled wild‐type littermates (WTs). We measured heart rate (HR), aorta diameter (AoD), thickness and thickening of the left‐ventricular (LV) anterior and posterior walls, LV chamber diameter, fractional shortening, stroke volume and cardiac output, mitral inflow Peak E and A velocity ratio, ascending aorta velocity time integral (VTI). Mutant groups presented small‐scale alterations in cardiac structure and function compared to WTs (LV anterior wall thickness and thickening, chamber diameter and fractional shortening, HR). A greater number of significant differences was observed among mutant groups than between mutant groups and WTs. Mutant groups differed primarily in structural measures (LV chamber diameter and anterior wall thickness, HR, AoD). The mutant groups with most differences to WTs were 16p11.2 (deletion), Fmr1(−/−), Arid1b(+/−). The mutant groups with most differences from other mutant groups were 16p11.2 (deletion), Sgsh(+/−), Fmr1(−/−). Our results recapitulate the associated clinical findings. The characteristic ASD heterogeneity was recapitulated in the cardiac phenotype. The type of abnormal measures (morphological, functional) can highlight common underlying mechanisms. Clinically, knowledge of cardiac abnormalities in ASD can be essential as even non‐lethal abnormalities impact normal development.
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Affiliation(s)
- Stephania Assimopoulos
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Christopher Hammill
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Darren J Fernandes
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Tara Leigh Spencer Noakes
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Yu-Qing Zhou
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Lauryl M J Nutter
- Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada.,The Centre for Phenogenomics, Toronto, Ontario, Canada
| | - Jacob Ellegood
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Evdokia Anagnostou
- Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Toronto, Ontario, Canada
| | - John G Sled
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Jason P Lerch
- Mouse Imaging Centre, Hospital for Sick Children, Toronto, Ontario, Canada.,Sickkids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.,Wellcome Centre for Integrative Neuroimaging, The University of Oxford, Oxford, UK
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11
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The Human Induced Pluripotent Stem Cell Test as an Alternative Method for Embryotoxicity Testing. Int J Mol Sci 2022; 23:ijms23063295. [PMID: 35328717 PMCID: PMC8950674 DOI: 10.3390/ijms23063295] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 02/01/2023] Open
Abstract
The evaluation of substances for their potency to induce embryotoxicity is controlled by safety regulations. Test guidelines for reproductive and developmental toxicity rely mainly on animal studies, which make up the majority of animal usage in regulatory toxicology. Therefore, there is an urgent need for alternative in vitro methods to follow the 3R principles. To improve human safety, cell models based on human cells are of great interest to overcome species differences. Here, human induced pluripotent stem cells (hiPSCs) are an ideal cell source as they largely recapitulate embryonic stem cells without bearing ethical concerns and they are able to differentiate into most cell types of the human body. Here, we set up and characterized a fetal bovine serum (FBS)-free hiPSC-based in vitro test method, called the human induced pluripotent stem cell test (hiPS Test), to evaluate the embryotoxic potential of substances. After 10 days in culture, hiPSCs develop into beating cardiomyocytes. As terminal endpoint evaluations, cell viability, qPCR analyses as well as beating frequency and area of beating cardiomyocytes by video analyses are measured. The embryotoxic positive and non-embryotoxic negative controls, 5-Fluorouracil (5-FU) and Penicillin G (PenG), respectively, were correctly assessed in the hiPS Test. More compounds need to be screened in the future for defining the assay’s applicability domain, which will inform us of the suitability of the hiPS Test for detecting adverse effects of substances on embryonic development.
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12
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Cao YJ, Li JY, Wang PX, Lin ZR, Yu WJ, Zhang JG, Lu J, Liu PQ. PKC-ζ Aggravates Doxorubicin-Induced Cardiotoxicity by Inhibiting Wnt/β-Catenin Signaling. Front Pharmacol 2022; 13:798436. [PMID: 35237161 PMCID: PMC8883055 DOI: 10.3389/fphar.2022.798436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 01/03/2022] [Indexed: 11/25/2022] Open
Abstract
Doxorubicin (Dox) is a chemotherapeutic drug used to treat a wide range of cancers, but its clinical application is limited due to its cardiotoxicity. Protein kinase C-ζ (PKC-ζ) is a serine/threonine kinase belonging to atypical protein kinase C (PKC) subfamily, and is activated by its phosphorylation. We and others have reported that PKC-ζ induced cardiac hypertrophy by activating the inflammatory signaling pathway. This study focused on whether PKC-ζ played an important role in Dox-induced cardiotoxicity. We found that PKC-ζ phosphorylation was increased by Dox treatment in vivo and in vitro. PKC-ζ overexpression exacerbated Dox-induced cardiotoxicity. Conversely, knockdown of PKC-ζ by siRNA relieved Dox-induced cardiotoxicity. Similar results were observed when PKC-ζ enzyme activity was inhibited by its pseudosubstrate inhibitor, Myristoylated. PKC-ζ interacted with β-catenin and inhibited Wnt/β-catenin signaling pathway. Activation of Wnt/β-catenin signaling by LiCl protected against Dox-induced cardiotoxicity. The Wnt/β-catenin inhibitor XAV-939 aggravated Dox-caused decline of β-catenin and cardiomyocyte apoptosis and mitochondrial damage. Moreover, activation of Wnt/β-catenin suppressed aggravation of Dox-induced cardiotoxicity due to PKC-ζ overexpression. Taken together, our study revealed that inhibition of PKC-ζ activity was a potential cardioprotective approach to preventing Dox-induced cardiac injury.
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Affiliation(s)
- Yan-Jun Cao
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jing-Yan Li
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
- School of Pharmaceutical Science, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Pan-Xia Wang
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhi-Rong Lin
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wen-Jing Yu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ji-Guo Zhang
- School of Pharmaceutical Sciences, Shandong Academy of Medical Sciences, Shandong First Medical University, Taian, China
- *Correspondence: Ji-Guo Zhang, ; Jing Lu, ; Pei-Qing Liu,
| | - Jing Lu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Ji-Guo Zhang, ; Jing Lu, ; Pei-Qing Liu,
| | - Pei-Qing Liu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
- School of Pharmaceutical Sciences, Shandong Academy of Medical Sciences, Shandong First Medical University, Taian, China
- *Correspondence: Ji-Guo Zhang, ; Jing Lu, ; Pei-Qing Liu,
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13
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A Novel High-Content Screening-Based Method for Anti- Trypanosoma cruzi Drug Discovery Using Human-Induced Pluripotent Stem Cell-Derived Cardiomyocytes. Stem Cells Int 2021; 2021:2642807. [PMID: 34434238 PMCID: PMC8380504 DOI: 10.1155/2021/2642807] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/05/2021] [Accepted: 08/01/2021] [Indexed: 11/18/2022] Open
Abstract
Chagas disease is caused by Trypanosoma cruzi infection and remains a relevant cause of chronic heart failure in Latin America. The pharmacological arsenal for Chagas disease is limited, and the available anti-T. cruzi drugs are not effective when administered during the chronic phase. Cardiomyocytes derived from human-induced pluripotent stem cells (hiPSC-CMs) have the potential to accelerate the process of drug discovery for Chagas disease, through predictive preclinical assays in target human cells. Here, we aimed to establish a novel high-content screening- (HCS-) based method using hiPSC-CMs to simultaneously evaluate anti-T. cruzi activity and cardiotoxicity of chemical compounds. To provide proof-of-concept data, the reference drug benznidazole and three compounds with known anti-T. cruzi activity (a betulinic acid derivative named BA5 and two thiazolidinone compounds named GT5A and GT5B) were evaluated in the assay. hiPSC-CMs were infected with T. cruzi and incubated for 48 h with serial dilutions of the compounds for determination of EC50 and CC50 values. Automated multiparametric analyses were performed using an automated high-content imaging system. Sublethal toxicity measurements were evaluated through morphological measurements related to the integrity of the cytoskeleton by phalloidin staining, nuclear score by Hoechst 33342 staining, mitochondria score following MitoTracker staining, and quantification of NT-pro-BNP, a peptide released upon mechanical myocardial stress. The compounds showed EC50 values for anti-T. cruzi activity similar to those previously described for other cell types, and GT5B showed a pronounced trypanocidal activity in hiPSC-CMs. Sublethal changes in cytoskeletal and nucleus scores correlated with NT-pro-BNP levels in the culture supernatant. Mitochondrial score changes were associated with increased cytotoxicity. The assay was feasible and allowed rapid assessment of anti-T. cruzi action of the compounds, in addition to cardiotoxicity parameters. The utilization of hiPSC-CMs in the drug development workflow for Chagas disease may help in the identification of novel compounds.
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14
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Abstract
Cardiomyogenesis, the process by which the body generates cardiomyocytes, is poorly understood. We have recently shown that Sfrp2 promotes cardiomyogenesis in vitro. The objective of this study was to determine if Sfrp2 would similarly promote cardiomyogenesis in vivo. To test this hypothesis, we tracked multipotent cKit(+) cells in response to Sfrp2 treatment. In control adult mice, multipotent cKit(+) cells typically differentiated into endothelial cells but not cardiomyocytes. In contrast, Sfrp2 switched the fate of these cells. Following Sfrp2 injection, multipotent cKit(+) cells differentiated solely into cardiomyocytes. Sfrp2-derived cardiomyocytes integrated into the myocardium and exhibited identical physiological properties to preexisting native cardiomyocytes. The ability of Sfrp2 to promote cardiomyogenesis was further supported by tracking EdU-labeled cells. In addition, Sfrp2 did not promote the formation of new cardiomyocytes when the cKit(+) cell population was selectively ablated in vivo using a diphtheria toxin receptor-diphtheria toxin model. Notably, Sfrp2-induced cardiomyogenesis was associated with significant functional improvements in a cardiac injury model. In summary, our study further demonstrates the importance of Sfrp2 in cardiomyogenesis.
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15
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Gao Y, Pu J. Differentiation and Application of Human Pluripotent Stem Cells Derived Cardiovascular Cells for Treatment of Heart Diseases: Promises and Challenges. Front Cell Dev Biol 2021; 9:658088. [PMID: 34055788 PMCID: PMC8149736 DOI: 10.3389/fcell.2021.658088] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/25/2021] [Indexed: 12/15/2022] Open
Abstract
Human pluripotent stem cells (hPSCs) are derived from human embryos (human embryonic stem cells) or reprogrammed from human somatic cells (human induced pluripotent stem cells). They can differentiate into cardiovascular cells, which have great potential as exogenous cell resources for restoring cardiac structure and function in patients with heart disease or heart failure. A variety of protocols have been developed to generate and expand cardiovascular cells derived from hPSCs in vitro. Precisely and spatiotemporally activating or inhibiting various pathways in hPSCs is required to obtain cardiovascular lineages with high differentiation efficiency. In this concise review, we summarize the protocols of differentiating hPSCs into cardiovascular cells, highlight their therapeutic application for treatment of cardiac diseases in large animal models, and discuss the challenges and limitations in the use of cardiac cells generated from hPSCs for a better clinical application of hPSC-based cardiac cell therapy.
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Affiliation(s)
- Yu Gao
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Pu
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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16
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Lauschke K, Volpini L, Liu Y, Vinggaard AM, Hall VJ. A Comparative Assessment of Marker Expression Between Cardiomyocyte Differentiation of Human Induced Pluripotent Stem Cells and the Developing Pig Heart. Stem Cells Dev 2021; 30:374-385. [PMID: 33599158 DOI: 10.1089/scd.2020.0184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The course of differentiation of pluripotent stem cells into cardiomyocytes and the intermediate cell types are characterized using molecular markers for different stages of development. These markers have been selected primarily from studies in the mouse and from a limited number of human studies. However, it is not clear how well mouse cardiogenesis compares with human cardiogenesis at the molecular level. We tackle this issue by analyzing and comparing the expression of common cardiomyogenesis markers [platelet-derived growth factor receptor, alpha polypeptide (PDGFR-α), fetal liver kinase 1 (FLK1), ISL1, NK2 homeobox 5 (NKX2.5), cardiac troponin T (CTNT), connexin43 (CX43), and myosin heavy chain 7 (MYHC-B)] in the developing pig heart at embryonic day (E)15, E16, E18, E20, E22, and E24 and in differentiating cardiomyocytes from human induced pluripotent stem cells (hiPSCs). We found that porcine expression of the mesoderm marker FLK1 and the cardiac progenitor marker ISL1 was in line with our differentiating hiPSC and reported murine expression. The cardiac lineage marker NKX2.5 was expressed at almost all stages in the pig and hiPSC, with an earlier onset in the hiPSC compared with reported murine expression. Markers of immature cardiomyocytes, CTNT, and MYHC-B were consistently expressed throughout E16-E70 in the pig, which is comparable with mouse development, whereas the markers increased over time in the hiPSC. However, the commonly used mature cardiomyocyte marker, CX43, should be used with caution, as it was also expressed in the pig mesoderm, as well as hiPSC immature cardiomyocytes, while this has not been reported in mice. Based on our observations in the various species, we suggest to use FLK1/PDGFR-α for identifying cardiac mesoderm and ISL1/NKX2.5 for cardiac progenitors. Furthermore, a combination of two or more of the following, CTNT+/MYHC-B+/ISL1+ could mark immature cardiomyocytes and CTNT+/ISL1- mature cardiomyocytes. CX43 should be used together with sarcomeric proteins. This knowledge may help improving differentiation of hiPSC into more in vivo-like cardiac tissue in the future.
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Affiliation(s)
- Karin Lauschke
- National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark.,Department for Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Luca Volpini
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Yong Liu
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Anne Marie Vinggaard
- National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Vanessa Jane Hall
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
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17
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Hsueh YC, Hodgkinson CP, Gomez JA. The role of Sfrp and DKK proteins in cardiomyocyte development. Physiol Rep 2021; 9:e14678. [PMID: 33587322 PMCID: PMC7883806 DOI: 10.14814/phy2.14678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/11/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
In this review, we summarize the role of Wnt proteins in cardiomyogenesis. More specifically, we focus on how the development of cardiomyocytes from precursor cells involves a complex interplay between Wnt canonical β-catenin signaling pathways and Wnt noncanonical signaling pathways involving PCP and JNK. We also describe recent literature which suggests that endogenous Wnt inhibitors such as the Sfrp and DKK proteins play important roles in regulating the cardiomyocyte differentiation.
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Affiliation(s)
- Ying-Chang Hsueh
- Mandel Center for Heart and Vascular Research, and the Duke Cardiovascular Research Center, Duke University Medical Center, Durham, NC, USA
| | - Conrad P Hodgkinson
- Mandel Center for Heart and Vascular Research, and the Duke Cardiovascular Research Center, Duke University Medical Center, Durham, NC, USA
| | - Jose A Gomez
- Department of Medicine, Clinical Pharmacology Division, Vanderbilt University Medical Center, Nashville, TN, USA
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18
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Kemmler CL, Riemslagh FW, Moran HR, Mosimann C. From Stripes to a Beating Heart: Early Cardiac Development in Zebrafish. J Cardiovasc Dev Dis 2021; 8:17. [PMID: 33578943 PMCID: PMC7916704 DOI: 10.3390/jcdd8020017] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 12/18/2022] Open
Abstract
The heart is the first functional organ to form during vertebrate development. Congenital heart defects are the most common type of human birth defect, many originating as anomalies in early heart development. The zebrafish model provides an accessible vertebrate system to study early heart morphogenesis and to gain new insights into the mechanisms of congenital disease. Although composed of only two chambers compared with the four-chambered mammalian heart, the zebrafish heart integrates the core processes and cellular lineages central to cardiac development across vertebrates. The rapid, translucent development of zebrafish is amenable to in vivo imaging and genetic lineage tracing techniques, providing versatile tools to study heart field migration and myocardial progenitor addition and differentiation. Combining transgenic reporters with rapid genome engineering via CRISPR-Cas9 allows for functional testing of candidate genes associated with congenital heart defects and the discovery of molecular causes leading to observed phenotypes. Here, we summarize key insights gained through zebrafish studies into the early patterning of uncommitted lateral plate mesoderm into cardiac progenitors and their regulation. We review the central genetic mechanisms, available tools, and approaches for modeling congenital heart anomalies in the zebrafish as a representative vertebrate model.
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Affiliation(s)
| | | | | | - Christian Mosimann
- Department of Pediatrics, Section of Developmental Biology, University of Colorado School of Medicine and Children’s Hospital Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA; (C.L.K.); (F.W.R.); (H.R.M.)
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19
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Pappas MP, Peifer LN, Chan SSK. Dual TGFβ and Wnt inhibition promotes Mesp1-mediated mouse pluripotent stem cell differentiation into functional cardiomyocytes. Dev Growth Differ 2020; 62:487-494. [PMID: 33048365 DOI: 10.1111/dgd.12694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/26/2020] [Accepted: 09/11/2020] [Indexed: 12/15/2022]
Abstract
Efficient derivation of cardiomyocytes from mouse pluripotent stem cells has proven challenging, and existing approaches rely on expensive supplementation or extensive manipulation. Mesp1 is a transcription factor that regulates cardiovascular specification during embryo development, and its overexpression has been shown to promote cardiogenesis. Here, we utilize a doxycycline-inducible Mesp1-expressing mouse embryonic stem cell system to develop an efficient differentiation protocol to generate functional cardiomyocytes. Our cardiac differentiation method involves transient Mesp1 induction following by subsequent dual inhibition of TGFβ and Wnt signaling pathways using small molecules. We discovered that whereas TGFβ inhibition promoted Mesp1-induced cardiac differentiation, Wnt inhibition was ineffective. Nevertheless, a combined inhibition of both pathways was superior to either inhibition alone in generating cardiomyocytes. These observations suggested a potential interaction between TGFβ and Wnt signaling pathways in the context of Mesp1-induced cardiac differentiation. Using a step-by-step approach, we have further optimized the windows of Mesp1 induction, TGFβ inhibition and Wnt inhibition to yield a maximal cardiomyocyte output - Mesp1 was induced first, followed by dual inhibition of TGFβ and Wnt signaling. Our protocol is capable of producing approximately 50% of cardiomyocytes in 12 days, which is comparable to existing methods, and have the advantages of being technically simple and inexpensive. Moreover, cardiomyocytes thus derived are functional, displaying intrinsic contractile capacity and contraction in response to electric stimulus. Derivation of mouse cardiomyocytes without the use of growth factors or other costly supplementation provides an accessible cell source for future applications.
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Affiliation(s)
- Matthew P Pappas
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Lindsay N Peifer
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Sunny S K Chan
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA.,Paul and Shelia Wellstone Muscular Dystrophy Center, Stem Cell Institute, Lillehei Heart Institute, University of Minnesota, Minneapolis, MN, USA
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20
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Shen Y, Lu H, Chen R, Zhu L, Song G. MicroRNA-29c affects zebrafish cardiac development via targeting Wnt4. Mol Med Rep 2020; 22:4675-4684. [PMID: 33173954 PMCID: PMC7646856 DOI: 10.3892/mmr.2020.11584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 09/18/2020] [Indexed: 01/07/2023] Open
Abstract
As a single cardiac malformation, ventricular septal defect (VSD) is the most common form of congenital heart disease. However, the precise molecular mechanisms underlying VSD are not completely understood. Numerous microRNAs (miRs/miRNAs) are associated with ventricular septal defects. miR-29c inhibits the proliferation and promotes the apoptosis and differentiation of P19 embryonal carcinoma cells, possibly via suppressing Wnt4 signaling. However, to the best of our knowledge, no in vivo studies have been published to determine whether overexpression of miR-29c leads to developmental abnormalities. The present study was designed to observe the effect of miRNA-29c on cardiac development and its possible mechanism in vivo. Zebrafish embryos were microinjected with different doses (1, 1.6 and 2 µmol) miR-29c mimics or negative controls, and hatchability, mortality and cardiac malformation were subsequently observed. The results showed that in zebrafish embryos, miR-29c overexpression attenuated heart development in a dose-dependent manner, manifested by heart rate slowdown, pericardial edema and heart looping disorder. Further experiments showed that overexpression of miR-29c was associated with the Wnt4/β-catenin signaling pathway to regulate zebrafish embryonic heart development. In conclusion, the present results demonstrated that miR-29c regulated the lateral development and cardiac circulation of zebrafish embryo by targeting Wnt4.
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Affiliation(s)
- Yahui Shen
- Department of Respiratory and Critical Care Medicine, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Huiyu Lu
- Department of Respiratory and Critical Care Medicine, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Rong Chen
- Department of Respiratory and Critical Care Medicine, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Li Zhu
- Department of Cardiology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Guixian Song
- Department of Cardiology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
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21
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Liu Y, Neogi A, Mani A. The role of Wnt signalling in development of coronary artery disease and its risk factors. Open Biol 2020; 10:200128. [PMID: 33081636 PMCID: PMC7653355 DOI: 10.1098/rsob.200128] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/23/2020] [Indexed: 02/05/2023] Open
Abstract
The Wnt signalling pathways are composed of a highly conserved cascade of events that govern cell differentiation, apoptosis and cell orientation. Three major and distinct Wnt signalling pathways have been characterized: the canonical Wnt pathway (or Wnt/β-catenin pathway), the non-canonical planar cell polarity pathway and the non-canonical Wnt/Ca2+ pathway. Altered Wnt signalling pathway has been associated with diverse diseases such as disorders of bone density, different malignancies, cardiac malformations and heart failure. Coronary artery disease is the most common type of heart disease in the United States. Atherosclerosis is a multi-step pathological process, which starts with lipid deposition and endothelial cell dysfunction, triggering inflammatory reactions, followed by recruitment and aggregation of monocytes. Subsequently, monocytes differentiate into tissue-resident macrophages and transform into foam cells by the uptake of modified low-density lipoprotein. Meanwhile, further accumulations of lipids, infiltration and proliferation of vascular smooth muscle cells, and deposition of the extracellular matrix occur under the intima. An atheromatous plaque or hyperplasia of the intima and media is eventually formed, resulting in luminal narrowing and reduced blood flow to the myocardium, leading to chest pain, angina and even myocardial infarction. The Wnt pathway participates in all different stages of this process, from endothelial dysfunction to lipid deposit, and from initial inflammation to plaque formation. Here, we focus on the role of Wnt cascade in pathophysiological mechanisms that take part in coronary artery disease from both clinical and experimental perspectives.
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Affiliation(s)
- Ya Liu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Arpita Neogi
- Yale Cardiovascular Genetics Program, Yale University, New Haven, CT, USA
| | - Arya Mani
- Yale Cardiovascular Genetics Program, Yale University, New Haven, CT, USA
- Yale Cardiovascular Research Center, Department of Medicine, Yale University, New Haven, CT, USA
- Department of Genetics, Yale University School of Medicine, Yale University, New Haven, CT, USA
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22
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Protze SI, Lee JH, Keller GM. Human Pluripotent Stem Cell-Derived Cardiovascular Cells: From Developmental Biology to Therapeutic Applications. Cell Stem Cell 2020; 25:311-327. [PMID: 31491395 DOI: 10.1016/j.stem.2019.07.010] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Advances in our understanding of cardiovascular development have provided a roadmap for the directed differentiation of human pluripotent stem cells (hPSCs) to the major cell types found in the heart. In this Perspective, we review the state of the field in generating and maturing cardiovascular cells from hPSCs based on our fundamental understanding of heart development. We then highlight their applications for studying human heart development, modeling disease-performing drug screening, and cell replacement therapy. With the advancements highlighted here, the promise that hPSCs will deliver new treatments for degenerative and debilitating diseases may soon be fulfilled.
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Affiliation(s)
- Stephanie I Protze
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Jee Hoon Lee
- BlueRock Therapeutics ULC, Toronto, ON M5G 1L7, Canada
| | - Gordon M Keller
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada; Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada.
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Tyson J, Bundy K, Roach C, Douglas H, Ventura V, Segars MF, Schwartz O, Simpson CL. Mechanisms of the Osteogenic Switch of Smooth Muscle Cells in Vascular Calcification: WNT Signaling, BMPs, Mechanotransduction, and EndMT. Bioengineering (Basel) 2020; 7:bioengineering7030088. [PMID: 32781528 PMCID: PMC7552614 DOI: 10.3390/bioengineering7030088] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/27/2020] [Accepted: 08/01/2020] [Indexed: 12/16/2022] Open
Abstract
Characterized by the hardening of arteries, vascular calcification is the deposition of hydroxyapatite crystals in the arterial tissue. Calcification is now understood to be a cell-regulated process involving the phenotypic transition of vascular smooth muscle cells into osteoblast-like cells. There are various pathways of initiation and mechanisms behind vascular calcification, but this literature review highlights the wingless-related integration site (WNT) pathway, along with bone morphogenic proteins (BMPs) and mechanical strain. The process mirrors that of bone formation and remodeling, as an increase in mechanical stress causes osteogenesis. Observing the similarities between the two may aid in the development of a deeper understanding of calcification. Both are thought to be regulated by the WNT signaling cascade and bone morphogenetic protein signaling and can also be activated in response to stress. In a pro-calcific environment, integrins and cadherins of vascular smooth muscle cells respond to a mechanical stimulus, activating cellular signaling pathways, ultimately resulting in gene regulation that promotes calcification of the vascular extracellular matrix (ECM). The endothelium is also thought to contribute to vascular calcification via endothelial to mesenchymal transition, creating greater cell plasticity. Each of these factors contributes to calcification, leading to increased cardiovascular mortality in patients, especially those suffering from other conditions, such as diabetes and kidney failure. Developing a better understanding of the mechanisms behind calcification may lead to the development of a potential treatment in the future.
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Guzzolino E, Pellegrino M, Ahuja N, Garrity D, D'Aurizio R, Groth M, Baumgart M, Hatcher CJ, Mercatanti A, Evangelista M, Ippolito C, Tognoni E, Fukuda R, Lionetti V, Pellegrini M, Cremisi F, Pitto L. miR-182-5p is an evolutionarily conserved Tbx5 effector that impacts cardiac development and electrical activity in zebrafish. Cell Mol Life Sci 2020; 77:3215-3229. [PMID: 31686119 PMCID: PMC11104936 DOI: 10.1007/s00018-019-03343-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 10/14/2019] [Indexed: 12/20/2022]
Abstract
To dissect the TBX5 regulatory circuit, we focused on microRNAs (miRNAs) that collectively contribute to make TBX5 a pivotal cardiac regulator. We profiled miRNAs in hearts isolated from wild-type, CRE, Tbx5lox/+and Tbx5del/+ mice using a Next Generation Sequencing (NGS) approach. TBX5 deficiency in cardiomyocytes increased the expression of the miR-183 cluster family that is controlled by Kruppel-like factor 4, a transcription factor repressed by TBX5. MiR-182-5p, the most highly expressed miRNA of this family, was functionally analyzed in zebrafish. Transient overexpression of miR-182-5p affected heart morphology, calcium handling and the onset of arrhythmias as detected by ECG tracings. Accordingly, several calcium channel proteins identified as putative miR-182-5p targets were downregulated in miR-182-5p overexpressing hearts. In stable zebrafish transgenic lines, we demonstrated that selective miRNA-182-5p upregulation contributes to arrhythmias. Moreover, cardiac-specific down-regulation of miR-182-5p rescued cardiac defects in a zebrafish model of Holt-Oram syndrome. In conclusion, miR-182-5p exerts an evolutionarily conserved role as a TBX5 effector in the onset of cardiac propensity for arrhythmia, and constitutes a relevant target for mediating the relationship between TBX5, arrhythmia and heart development.
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Affiliation(s)
- Elena Guzzolino
- Institute of Clinical Physiology, National Research Council, IFC via Moruzzi 1, 56124, Pisa, Italy
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | | | - Neha Ahuja
- Department of Biology, Colorado State University (CSU), Fort Collins, CO, USA
| | - Deborah Garrity
- Department of Biology, Colorado State University (CSU), Fort Collins, CO, USA
| | | | - Marco Groth
- The Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Mario Baumgart
- The Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Cathy J Hatcher
- Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
| | - Alberto Mercatanti
- Institute of Clinical Physiology, National Research Council, IFC via Moruzzi 1, 56124, Pisa, Italy
| | - Monica Evangelista
- Institute of Clinical Physiology, National Research Council, IFC via Moruzzi 1, 56124, Pisa, Italy
| | - Chiara Ippolito
- Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy
| | | | - Ryuichi Fukuda
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Vincenzo Lionetti
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
- UOS Anesthesiology, Fondazione Toscana "G.Monasterio", Pisa, Italy
| | | | | | - Letizia Pitto
- Institute of Clinical Physiology, National Research Council, IFC via Moruzzi 1, 56124, Pisa, Italy.
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Wood KA, Rowlands CF, Thomas HB, Woods S, O’Flaherty J, Douzgou S, Kimber SJ, Newman WG, O’Keefe RT. Modelling the developmental spliceosomal craniofacial disorder Burn-McKeown syndrome using induced pluripotent stem cells. PLoS One 2020; 15:e0233582. [PMID: 32735620 PMCID: PMC7394406 DOI: 10.1371/journal.pone.0233582] [Citation(s) in RCA: 12] [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: 05/04/2020] [Accepted: 07/06/2020] [Indexed: 12/15/2022] Open
Abstract
The craniofacial developmental disorder Burn-McKeown Syndrome (BMKS) is caused by biallelic variants in the pre-messenger RNA splicing factor gene TXNL4A/DIB1. The majority of affected individuals with BMKS have a 34 base pair deletion in the promoter region of one allele of TXNL4A combined with a loss-of-function variant on the other allele, resulting in reduced TXNL4A expression. However, it is unclear how reduced expression of this ubiquitously expressed spliceosome protein results in craniofacial defects during development. Here we reprogrammed peripheral mononuclear blood cells from a BMKS patient and her unaffected mother into induced pluripotent stem cells (iPSCs) and differentiated the iPSCs into induced neural crest cells (iNCCs), the key cell type required for correct craniofacial development. BMKS patient-derived iPSCs proliferated more slowly than both mother- and unrelated control-derived iPSCs, and RNA-Seq analysis revealed significant differences in gene expression and alternative splicing. Patient iPSCs displayed defective differentiation into iNCCs compared to maternal and unrelated control iPSCs, in particular a delay in undergoing an epithelial-to-mesenchymal transition (EMT). RNA-Seq analysis of differentiated iNCCs revealed widespread gene expression changes and mis-splicing in genes relevant to craniofacial and embryonic development that highlight a dampened response to WNT signalling, the key pathway activated during iNCC differentiation. Furthermore, we identified the mis-splicing of TCF7L2 exon 4, a key gene in the WNT pathway, as a potential cause of the downregulated WNT response in patient cells. Additionally, mis-spliced genes shared common sequence properties such as length, branch point to 3’ splice site (BPS-3’SS) distance and splice site strengths, suggesting that splicing of particular subsets of genes is particularly sensitive to changes in TXNL4A expression. Together, these data provide the first insight into how reduced TXNL4A expression in BMKS patients might compromise splicing and NCC function, resulting in defective craniofacial development in the embryo.
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Affiliation(s)
- Katherine A. Wood
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Charlie F. Rowlands
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Huw B. Thomas
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Steven Woods
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Julieta O’Flaherty
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Sofia Douzgou
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Susan J. Kimber
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - William G. Newman
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, Manchester Academic Health Science Centre, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Raymond T. O’Keefe
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- * E-mail:
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Du B, Wang J, Zang S, Mao X, Du Y. Long non-coding RNA MALAT1 suppresses the proliferation and migration of endothelial progenitor cells in deep vein thrombosis by regulating the Wnt/β-catenin pathway. Exp Ther Med 2020; 20:3138-3146. [PMID: 32855682 PMCID: PMC7444359 DOI: 10.3892/etm.2020.9066] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 02/14/2020] [Indexed: 12/18/2022] Open
Abstract
Deep vein thrombosis (DVT) is one of the most common circulating vascular diseases with an incidence of ~0.1% worldwide. Although anticoagulant medication remains to be the main therapeutic approach for patients with DVT, existing thrombus and pulmonary embolisms still pose as a threat to patient life. Therefore, effective targeted therapies need to be developed and studies are required to improve understanding of this condition. Endothelial progenitor cells (EPCs) originate from the bone marrow, are located in the peripheral blood and are involved in thrombus resolution. Long non-coding RNAs (lncRNAs) are non-coding RNAs that are >200 nucleotides in length. LncRNAs are associated with the development of numerous vascular diseases. Among these lncRNAs, metastasis associated lung adenocarcinoma transcript 1 (MALAT1) is downregulated in human atherosclerotic plaques. Furthermore, MALAT1 polymorphism resulted in vascular disease in Chinese populations. In the present study, the expression profile and potential functions of MALAT1 in DVT were investigated. The results revealed that MALAT1 was upregulated in DVT tissues. Furthermore, MALAT1 was able to regulate the biological behaviors of EPCs, including proliferation, migration, cell cycle arrest and apoptosis. In addition, the Wnt/β-catenin signaling pathway is a promising downstream target of MALAT1 in DVT. The changes in biological behaviors in EPCs caused by silenced MALAT1 were reversed by inhibition of the Wnt/β-catenin signaling pathway. In summary, the data indicated the roles of MALAT1 in the pathogenesis of DVT, and the MALAT1/Wnt/β-catenin axis could be a novel therapeutic target for the treatment of DVT.
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Affiliation(s)
- Binghui Du
- Department of Vascular Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Jian Wang
- Department of Vascular Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Sheng Zang
- Department of Vascular Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Xin Mao
- Department of Vascular Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Yaming Du
- Department of Vascular Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
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Noack C, Iyer LM, Liaw NY, Schoger E, Khadjeh S, Wagner E, Woelfer M, Zafiriou MP, Milting H, Sossalla S, Streckfuss-Boemeke K, Hasenfuß G, Zimmermann WH, Zelarayán LC. KLF15-Wnt-Dependent Cardiac Reprogramming Up-Regulates SHISA3 in the Mammalian Heart. J Am Coll Cardiol 2020; 74:1804-1819. [PMID: 31582141 DOI: 10.1016/j.jacc.2019.07.076] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 05/31/2019] [Accepted: 07/12/2019] [Indexed: 01/14/2023]
Abstract
BACKGROUND The combination of cardiomyocyte (CM) and vascular cell (VC) fetal reprogramming upon stress culminates in end-stage heart failure (HF) by mechanisms that are not fully understood. Previous studies suggest KLF15 as a key regulator of CM hypertrophy. OBJECTIVES This study aimed to characterize the impact of KLF15-dependent cardiac transcriptional networks leading to HF progression, amenable to therapeutic intervention in the adult heart. METHODS Transcriptomic bioinformatics, phenotyping of Klf15 knockout mice, Wnt-signaling-modulated hearts, and pressure overload and myocardial ischemia models were applied. Human KLF15 knockout embryonic stem cells and engineered human myocardium, and human samples were used to validate the relevance of the identified mechanisms. RESULTS The authors identified a sequential, postnatal transcriptional repression mediated by KLF15 of pathways implicated in pathological tissue remodeling, including distinct Wnt-pathways that control CM fetal reprogramming and VC remodeling. The authors further uncovered a vascular program induced by a cellular crosstalk initiated by CM, characterized by a reduction of KLF15 and a concomitant activation of Wnt-dependent transcriptional signaling. Within this program, a so-far uncharacterized cardiac player, SHISA3, primarily expressed in VCs in fetal hearts and pathological remodeling was identified. Importantly, the KLF15 and Wnt codependent SHISA3 regulation was demonstrated to be conserved in mouse and human models. CONCLUSIONS The authors unraveled a network interplay defined by KLF15-Wnt dynamics controlling CM and VC homeostasis in the postnatal heart and demonstrated its potential as a cardiac-specific therapeutic target in HF. Within this network, they identified SHISA3 as a novel, evolutionarily conserved VC marker involved in pathological remodeling in HF.
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Affiliation(s)
- Claudia Noack
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Research & Development, Pharmaceuticals, Bayer AG, Berlin, Germany
| | - Lavanya M Iyer
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Computational and Systems Biology, Genome Institute of Singapore (GIS), Singapore
| | - Norman Y Liaw
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany
| | - Eric Schoger
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany
| | - Sara Khadjeh
- DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany
| | - Eva Wagner
- DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany
| | - Monique Woelfer
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany
| | - Maria-Patapia Zafiriou
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany
| | - Hendrik Milting
- Erich and Hanna Klessmann Institute, Heart and Diabetes Centre NRW, University Hospital of the Ruhr-University Bochum, Bad Oeynhausen, Germany
| | - Samuel Sossalla
- DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Katrin Streckfuss-Boemeke
- DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany
| | - Gerd Hasenfuß
- DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany; Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany
| | - Wolfram-Hubertus Zimmermann
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany
| | - Laura C Zelarayán
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen, Germany; DZHK (German Center for Cardiovascular Research), partner site Goettingen, Germany.
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Yin L, Yao J, Deng G, Wang X, Cai W, Shen J. Identification of candidate lncRNAs and circRNAs regulating WNT3/β-catenin signaling in essential hypertension. Aging (Albany NY) 2020; 12:8261-8288. [PMID: 32392180 PMCID: PMC7244030 DOI: 10.18632/aging.103137] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022]
Abstract
Mounting evidence suggests that noncoding RNAs (ncRNAs) contribute to the pathogenesis of cardiovascular diseases. However, their role in essential hypertension (EH) is still unclear. We therefore identified differentially expressed long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) in EH patients from a high-risk population group and constructed a competing endogenous RNA regulatory network that predicts interactions of potential diagnostic and therapeutic relevance between specific lncRNA/circRNA-microRNA-mRNA triplets. Our analysis identified two lncRNAs, transmembrane protein 183A pseudogene (LOC646616) and leucine aminopeptidase 3 pseudogene 2 (LAP3P2), and two circRNAs, hsa_circ_0039388 and hsa_circ_0038648, that are highly co-expressed with both wingless-type MMTV integration site family member 3 (WNT3) and calcium/calmodulin-dependent protein kinase II inhibitor 2 (CAMK2N2) mRNAs and also share common microRNA binding sites with these two transcripts. We also confirmed that a mutually regulated network composed of LOC646616/microRNA-637/WNT3 controls WNT3 expression and influences viability and invasive properties in human arterial smooth muscle cells in vitro. These findings highlight a novel ncRNA-based regulatory mechanism potentially driving WNT/β-catenin activation in EH, and suggest that the identified ncRNAs may represent useful biomarkers and therapeutic targets for this condition.
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Affiliation(s)
- Liang Yin
- Department of Endocrinology, Shunde Hospital of Southern Medical University, Shunde 528300, China
| | - Jie Yao
- Shunde Hospital of Southern Medical University, Shunde 528300, China
| | - Guangxue Deng
- Department of Endocrinology, Shunde Hospital of Southern Medical University, Shunde 528300, China
| | - Xuemei Wang
- State Key Laboratory of Bioelectronics, Chien-Shiung Wu Lab, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Weijuan Cai
- Shunde Hospital of Southern Medical University, Shunde 528300, China.,State Key Laboratory of Bioelectronics, Chien-Shiung Wu Lab, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Jie Shen
- Department of Endocrinology, Shunde Hospital of Southern Medical University, Shunde 528300, China
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Tarbit E, Singh I, Peart JN, Rose'Meyer RB. Biomarkers for the identification of cardiac fibroblast and myofibroblast cells. Heart Fail Rev 2020; 24:1-15. [PMID: 29987445 DOI: 10.1007/s10741-018-9720-1] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Experimental research has recognized the importance of cardiac fibroblast and myofibroblast cells in heart repair and function. In a normal healthy heart, the cardiac fibroblast plays a central role in the structural, electrical, and chemical aspects within the heart. Interestingly, the transformation of cardiac fibroblast cells to cardiac myofibroblast cells is suspected to play a vital part in the development of heart failure. The ability to differentiate between the two cells types has been a challenge. Myofibroblast cells are only expressed in the stressed or failing heart, so a better understanding of cell function may identify therapies that aid repair of the damaged heart. This paper will provide an outline of what is currently known about cardiac fibroblasts and myofibroblasts, the physiological and pathological roles within the heart, and causes for the transition of fibroblasts into myoblasts. We also reviewed the potential markers available for characterizing these cells and found that there is no single-cell specific marker that delineates fibroblast or myofibroblast cells. To characterize the cells of fibroblast origin, vimentin is commonly used. Cardiac fibroblasts can be identified using discoidin domain receptor 2 (DDR2) while α-smooth muscle actin is used to distinguish myofibroblasts. A known cytokine TGF-β1 is well established to cause the transformation of cardiac fibroblasts to myofibroblasts. This review will also discuss clinical treatments that inhibit or reduce the actions of TGF-β1 and its contribution to cardiac fibrosis and heart failure.
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Affiliation(s)
- Emiri Tarbit
- School of Medical Sciences, Griffith University, Griffith, QLD, 4222, Australia
| | - Indu Singh
- School of Medical Sciences, Griffith University, Griffith, QLD, 4222, Australia
| | - Jason N Peart
- School of Medical Sciences, Griffith University, Griffith, QLD, 4222, Australia
| | - Roselyn B Rose'Meyer
- School of Medical Sciences, Griffith University, Griffith, QLD, 4222, Australia.
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30
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Congenital heart diseases: genetics, non-inherited risk factors, and signaling pathways. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2020. [DOI: 10.1186/s43042-020-0050-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Abstract
Background
Congenital heart diseases (CHDs) are the most common congenital anomalies with an estimated prevalence of 8 in 1000 live births. CHDs occur as a result of abnormal embryogenesis of the heart. Congenital heart diseases are associated with significant mortality and morbidity. The damage of the heart is irreversible due to a lack of regeneration potential, and usually, the patients may require surgical intervention. Studying the developmental biology of the heart is essential not only in understanding the mechanisms and pathogenesis of congenital heart diseases but also in providing us with insight towards developing new preventive and treatment methods.
Main body
The etiology of congenital heart diseases is still elusive. Both genetic and environmental factors have been implicated to play a role in the pathogenesis of the diseases. Recently, cardiac transcription factors, cardiac-specific genes, and signaling pathways, which are responsible for early cardiac morphogenesis have been extensively studied in both human and animal experiments but leave much to be desired. The discovery of novel genetic methods such as next generation sequencing and chromosomal microarrays have led to further study the genes, non-coding RNAs and subtle chromosomal changes, elucidating their implications to the etiology of congenital heart diseases. Studies have also implicated non-hereditary risk factors such as rubella infection, teratogens, maternal age, diabetes mellitus, and abnormal hemodynamics in causing CHDs.
These etiological factors raise questions on multifactorial etiology of CHDs. It is therefore important to endeavor in research based on finding the causes of CHDs. Finding causative factors will enable us to plan intervention strategies and mitigate the consequences associated with CHDs. This review, therefore, puts forward the genetic and non-genetic causes of congenital heart diseases. Besides, it discusses crucial signaling pathways which are involved in early cardiac morphogenesis. Consequently, we aim to consolidate our knowledge on multifactorial causes of CHDs so as to pave a way for further research regarding CHDs.
Conclusion
The multifactorial etiology of congenital heart diseases gives us a challenge to explicitly establishing specific causative factors and therefore plan intervention strategies. More well-designed studies and the use of novel genetic technologies could be the way through the discovery of etiological factors implicated in the pathogenesis of congenital heart diseases.
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miR-128a Acts as a Regulator in Cardiac Development by Modulating Differentiation of Cardiac Progenitor Cell Populations. Int J Mol Sci 2020; 21:ijms21031158. [PMID: 32050579 PMCID: PMC7038042 DOI: 10.3390/ijms21031158] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/04/2020] [Accepted: 02/06/2020] [Indexed: 11/18/2022] Open
Abstract
MicroRNAs (miRs) appear to be major, yet poorly understood players in regulatory networks guiding cardiogenesis. We sought to identify miRs with unknown functions during cardiogenesis analyzing the miR-profile of multipotent Nkx2.5 enhancer cardiac progenitor cells (NkxCE-CPCs). Besides well-known candidates such as miR-1, we found about 40 miRs that were highly enriched in NkxCE-CPCs, four of which were chosen for further analysis. Knockdown in zebrafish revealed that only miR-128a affected cardiac development and function robustly. For a detailed analysis, loss-of-function and gain-of-function experiments were performed during in vitro differentiations of transgenic murine pluripotent stem cells. MiR-128a knockdown (1) increased Isl1, Sfrp5, and Hcn4 (cardiac transcription factors) but reduced Irx4 at the onset of cardiogenesis, (2) upregulated Isl1-positive CPCs, whereas NkxCE-positive CPCs were downregulated, and (3) increased the expression of the ventricular cardiomyocyte marker Myl2 accompanied by a reduced beating frequency of early cardiomyocytes. Overexpression of miR-128a (4) diminished the expression of Isl1, Sfrp5, Nkx2.5, and Mef2c, but increased Irx4, (5) enhanced NkxCE-positive CPCs, and (6) favored nodal-like cardiomyocytes (Tnnt2+, Myh6+, Shox2+) accompanied by increased beating frequencies. In summary, we demonstrated that miR-128a plays a so-far unknown role in early heart development by affecting the timing of CPC differentiation into various cardiomyocyte subtypes.
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32
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Kuipers AL, Miljkovic I, Barinas-Mitchell E, Nestlerode CS, Cvejkus RK, Wheeler VW, Zhang Y, Zmuda JM. Wnt Pathway Gene Expression Is Associated With Arterial Stiffness. J Am Heart Assoc 2020; 9:e014170. [PMID: 32013702 PMCID: PMC7033870 DOI: 10.1161/jaha.119.014170] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Animal and in vitro experiments implicate the Wnt pathway in cardiac development, fibrosis, vascular calcification, and atherosclerosis, but research in humans is lacking. We examined peripheral blood Wnt pathway gene expression and arterial stiffness in 369 healthy African ancestry men (mean age, 64 years). Methods and Results Gene expression was assessed using a custom Nanostring nCounter gene expression panel (N=43 genes) and normalized to housekeeping genes and background signal. Arterial stiffness was assessed via brachial‐ankle pulse‐wave velocity. Fourteen Wnt genes showed detectable expression and were tested individually as predictors of pulse‐wave velocity using linear regression, adjusting for age, height, weight, blood pressure, medication use, resting heart rate, current smoking, alcohol intake, and sedentary lifestyle. Adenomatous polyposis coli regulator of Wnt signaling pathway (APC), glycogen synthase kinase 3β (GSK3B), and transcription factor 4 (TCF4) were significantly associated with arterial stiffness (P<0.05 for all). When entered into a single model, APC and TCF4 expression remained independently associated with arterial stiffness (P=0.04 and 0.003, respectively), and each explained ≈3% of the variance in pulse‐wave velocity. Conclusions The current study establishes a novel association between in vivo expression of the Wnt pathway genes, APC and TCF4, with arterial stiffness in African ancestry men, a population at high risk of hypertensive vascular disease.
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Affiliation(s)
| | - Iva Miljkovic
- Department of Epidemiology University of Pittsburgh Pittsburgh PA
| | | | | | - Ryan K Cvejkus
- Department of Epidemiology University of Pittsburgh Pittsburgh PA
| | | | - Yingze Zhang
- Department of Medicine University of Pittsburgh Pittsburgh PA
| | - Joseph M Zmuda
- Department of Epidemiology University of Pittsburgh Pittsburgh PA
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33
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Witman N, Zhou C, Grote Beverborg N, Sahara M, Chien KR. Cardiac progenitors and paracrine mediators in cardiogenesis and heart regeneration. Semin Cell Dev Biol 2019; 100:29-51. [PMID: 31862220 DOI: 10.1016/j.semcdb.2019.10.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/13/2019] [Accepted: 10/21/2019] [Indexed: 12/17/2022]
Abstract
The mammalian hearts have the least regenerative capabilities among tissues and organs. As such, heart regeneration has been and continues to be the ultimate goal in the treatment against acquired and congenital heart diseases. Uncovering such a long-awaited therapy is still extremely challenging in the current settings. On the other hand, this desperate need for effective heart regeneration has developed various forms of modern biotechnologies in recent years. These involve the transplantation of pluripotent stem cell-derived cardiac progenitors or cardiomyocytes generated in vitro and novel biochemical molecules along with tissue engineering platforms. Such newly generated technologies and approaches have been shown to effectively proliferate cardiomyocytes and promote heart repair in the diseased settings, albeit mainly preclinically. These novel tools and medicines give somehow credence to breaking down the barriers associated with re-building heart muscle. However, in order to maximize efficacy and achieve better clinical outcomes through these cell-based and/or cell-free therapies, it is crucial to understand more deeply the developmental cellular hierarchies/paths and molecular mechanisms in normal or pathological cardiogenesis. Indeed, the morphogenetic process of mammalian cardiac development is highly complex and spatiotemporally regulated by various types of cardiac progenitors and their paracrine mediators. Here we discuss the most recent knowledge and findings in cardiac progenitor cell biology and the major cardiogenic paracrine mediators in the settings of cardiogenesis, congenital heart disease, and heart regeneration.
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Affiliation(s)
- Nevin Witman
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Department of Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Chikai Zhou
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Niels Grote Beverborg
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Makoto Sahara
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Department of Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Department of Surgery, Yale University School of Medicine, CT, USA.
| | - Kenneth R Chien
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Department of Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
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34
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Cardioprotective mechanisms of salvianic acid A sodium in rats with myocardial infarction based on proteome and transcriptome analysis. Acta Pharmacol Sin 2019; 40:1513-1522. [PMID: 31253938 PMCID: PMC7468552 DOI: 10.1038/s41401-019-0265-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/27/2019] [Indexed: 12/28/2022] Open
Abstract
Ischemic heart diseases (IHDs) cause great morbidity and mortality worldwide, necessitating effective treatment. Salvianic acid A sodium (SAAS) is an active compound derived from the well-known herbal medicine Danshen, which has been widely used for clinical treatment of cardiovascular diseases in China. This study aimed to confirm the cardioprotective effects of SAAS in rats with myocardial infarction and to investigate the underlying molecular mechanisms based on proteome and transcriptome profiling of myocardial tissue. The results showed that SAAS effectively protected against myocardial injury and improved cardiac function. The differentially expressed proteins and genes included important structural molecules, receptors, transcription factors, and cofactors. Functional enrichment analysis indicated that SAAS participated in the regulation of actin cytoskeleton, phagosome, focal adhesion, tight junction, apoptosis, MAPK signaling, and Wnt signaling pathways, which are closely related to cardiovascular diseases. SAAS may exert its cardioprotective effect by targeting multiple pathways at both the proteome and transcriptome levels. This study has provided not only new insights into the pathogenesis of myocardial infarction but also a road map of the cardioprotective molecular mechanisms of SAAS, which may provide pharmacological evidence to aid in its clinical application.
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35
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Choe MS, Yeo HC, Bae CM, Han HJ, Baek KM, Kim JS, Lim KS, Shin IS, Chang W, Yun SP, Lee HJ, Lee MY. Trolox-induced cardiac differentiation is mediated by the inhibition of Wnt/β-catenin signaling in human embryonic stem cells. Cell Biol Int 2019; 43:1505-1515. [PMID: 31293030 DOI: 10.1002/cbin.11200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 07/07/2019] [Indexed: 01/24/2023]
Abstract
Cardiac differentiation of human pluripotent stem cells may be induced under chemically defined conditions, wherein the regulation of Wnt/β-catenin pathway is often desirable. Here, we examined the effect of trolox, a vitamin E analog, on the cardiac differentiation of human embryonic stem cells (hESCs). 6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid (Trolox) significantly enhanced cardiac differentiation in a time- and dose-dependent manner after the mesodermal differentiation of hESCs. Trolox promoted hESC cardiac differentiation through its inhibitory activity against the Wnt/β-catenin pathway. This study demonstrates an efficient cardiac differentiation method and reveals a novel Wnt/β-catenin regulator.
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Affiliation(s)
- Mu Seog Choe
- Department of Molecular Pharmacology, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Korea
| | - Han Cheol Yeo
- Department of Molecular Pharmacology, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Korea
| | - Chang Min Bae
- Department of Molecular Pharmacology, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Korea
| | - Ho Jae Han
- Department of Veterinary Physiology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Seoul, 08826, Korea
| | - Kyung Min Baek
- Department of Cardiovascular and Neurologic Disease, College of Oriental Medicine, Daegu Haany University, 136 Sincheondong-ro, Daegu, 42158, Korea
| | - Joong Sun Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do 58245, Korea
| | - Kyung Seob Lim
- Futuristic Animal Resource and Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Cheongju, Chungcheongbuk-do 28116, Korea
| | - In-Sik Shin
- Department of Veterinary Pharmacology, College of Veterinary Medicine (BK21 Project Team), Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Korea
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, 2 Busandaehak-ro, Busan, 46241, Korea
| | - Seung Pil Yun
- Department of Pharmacology, School of Medicine, Gyeongsang National University, 15 Jinjudae-ro 816, Jinju, 52727, Korea
| | - Ho Jin Lee
- Department of Pharmacology, School of Medicine, Yale University, 333 Cedar street, New Haven, Connecticut, 06520, USA
| | - Min Young Lee
- Department of Molecular Pharmacology, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Korea
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36
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Bejoy J, Yuan X, Song L, Hua T, Jeske R, Sart S, Sang QXA, Li Y. Genomics Analysis of Metabolic Pathways of Human Stem Cell-Derived Microglia-Like Cells and the Integrated Cortical Spheroids. Stem Cells Int 2019; 2019:2382534. [PMID: 31827525 PMCID: PMC6885849 DOI: 10.1155/2019/2382534] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/18/2019] [Accepted: 10/09/2019] [Indexed: 12/27/2022] Open
Abstract
Brain spheroids or organoids derived from human pluripotent stem cells (hiPSCs) are still not capable of completely recapitulating in vivo human brain tissue, and one of the limitations is lack of microglia. To add built-in immune function, coculture of the dorsal forebrain spheroids with isogenic microglia-like cells (D-MG) was performed in our study. The three-dimensional D-MG spheroids were analyzed for their transcriptome and compared with isogenic microglia-like cells (MG). Cortical spheroids containing microglia-like cells displayed different metabolic programming, which may affect the associated phenotype. The expression of genes related to glycolysis and hypoxia signaling was increased in cocultured D-MG spheroids, indicating the metabolic shift to aerobic glycolysis, which is in favor of M1 polarization of microglia-like cells. In addition, the metabolic pathways and the signaling pathways involved in cell proliferation, cell death, PIK3/AKT/mTOR signaling, eukaryotic initiation factor 2 pathway, and Wnt and Notch pathways were analyzed. The results demonstrate the activation of mTOR and p53 signaling, increased expression of Notch ligands, and the repression of NF-κB and canonical Wnt pathways, as well as the lower expression of cell cycle genes in the cocultured D-MG spheroids. This analysis indicates that physiological 3-D microenvironment may reshape the immunity of in vitro cortical spheroids and better recapitulate in vivo brain tissue function for disease modeling and drug screening.
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Affiliation(s)
- Julie Bejoy
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, USA
| | - Xuegang Yuan
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, USA
| | - Liqing Song
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, USA
| | - Thien Hua
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida, USA
| | - Richard Jeske
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, USA
| | - Sébastien Sart
- Hydrodynamics Laboratory (LadHyX)-Department of Mechanics, Ecole Polytechnique, CNRS-UMR7646, 91128 Palaiseau, France
| | - Qing-Xiang Amy Sang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida, USA
- Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, USA
| | - Yan Li
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, USA
- Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, USA
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37
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Moore ER, Chen JC, Jacobs CR. Prx1-Expressing Progenitor Primary Cilia Mediate Bone Formation in response to Mechanical Loading in Mice. Stem Cells Int 2019; 2019:3094154. [PMID: 31814831 PMCID: PMC6877967 DOI: 10.1155/2019/3094154] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 09/14/2019] [Accepted: 09/26/2019] [Indexed: 11/25/2022] Open
Abstract
Increases in mechanical loading can enhance the addition of new bone, altering geometry and density such that bones better withstand higher forces. Bone-forming osteoblasts have long been thought to originate from progenitors, but the exact source is yet to be identified. Previous studies indicate osteogenic precursors arise from Prx1-expressing progenitors during embryonic development and adult fracture repair. However, it is unknown whether this cell population is also a source for mechanically induced active osteoblasts. We first identified that Prx1 is expressed in skeletally mature mouse periosteum, a thin tissue covering the surface of the bone that is rich in osteoprogenitors. We then traced Prx1 progenitor lineage using a transgenic mouse model carrying both a Prx1-driven tamoxifen-inducible Cre and a ROSA-driven lacZ reporter gene. Cells that expressed Prx1 when compressive axial loading was applied were detected within the cortical bone days after stimulation, indicating osteocytes are of Prx1-expressing cell origin. In addition, we evaluated how these cells sense and respond to physical stimulation in vivo by disrupting their primary cilia, which are antenna-like sensory organelles known to enhance mechanical and chemical signaling kinetics. Although Prx1-driven primary cilium disruption did not affect osteoblast recruitment to the bone surface, the relative mineral apposition and bone formation rates were decreased by 53% and 34%, respectively. Thus, this cell population contributes to load-induced bone formation, and primary cilia are needed for a complete response. Interestingly, Prx1-expressing progenitors are easily extracted from periosteum and are perhaps an attractive alternative to marrow stem cells for bone tissue regeneration strategies.
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Affiliation(s)
- Emily R. Moore
- Department of Biomedical Engineering, Columbia University, 500 W 120th Street New York, NY 10027, USA
| | - Julia C. Chen
- Department of Biomedical Engineering, Columbia University, 500 W 120th Street New York, NY 10027, USA
| | - Christopher R. Jacobs
- Department of Biomedical Engineering, Columbia University, 500 W 120th Street New York, NY 10027, USA
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38
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Li HX, Lin J, Jiang B, Yang XJ. Wnt11 preserves mitochondrial membrane potential and protects cardiomyocytes against hypoxia through paracrine signaling. J Cell Biochem 2019; 121:1144-1155. [PMID: 31463993 DOI: 10.1002/jcb.29349] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 08/13/2019] [Indexed: 12/15/2022]
Abstract
We investigated the effect of Wnt11 on mitochondrial membrane integrity in cardiomyocytes (CMs) and the underlying mechanism of Wnt11-mediated CM protection against hypoxic injury. A rat mesenchymal stem cell (MSC) line that overexpresses Wnt11 (MSCWnt11 ) and a control cell line transduced with empty vector (MSCNull ) were established to determine the cardioprotective role of Wnt11 in response to hypoxia. Mitochondrial membrane integrity in MSCWnt11 cells was assessed using fluorescence assays. The role of paracrine signaling mediated by vascular endothelial growth factor (VEGF), basic fibroblast growth factor (b-FGF), and insulin-like growth factor 1 (IGF-1) in protecting CMs against hypoxia were investigated using cocultures of primary CMs from neonatal rats with conditioned medium (CdM) from MSCWnt11 . MSCWnt11 cells exposed to hypoxia reduced lactate dehydrogenase release from CMs and increased CM survival under hypoxia. In addition, CMs cocultured with CdM that were exposed to hypoxia showed reduced CM apoptosis and necrosis. There was significantly higher VEGF and IGF-1 release in the MSCWnt11 group compared with the MSCNull group, and the addition of anti-VEGF and anti-IGF-1 antibodies inhibited secretion. Moreover, mitochondrial membrane integrity was maintained in the MSCWnt11 cell line. In conclusion, overexpression of Wnt11 in MSCs promotes IGF-1 and VEGF release, thereby protecting CMs against hypoxia.
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Affiliation(s)
- Hong-Xia Li
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jia Lin
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Bin Jiang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xiang-Jun Yang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
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39
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Iyer LM, Nagarajan S, Woelfer M, Schoger E, Khadjeh S, Zafiriou MP, Kari V, Herting J, Pang ST, Weber T, Rathjens FS, Fischer TH, Toischer K, Hasenfuss G, Noack C, Johnsen SA, Zelarayán LC. A context-specific cardiac β-catenin and GATA4 interaction influences TCF7L2 occupancy and remodels chromatin driving disease progression in the adult heart. Nucleic Acids Res 2019; 46:2850-2867. [PMID: 29394407 PMCID: PMC5887416 DOI: 10.1093/nar/gky049] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/18/2018] [Indexed: 12/17/2022] Open
Abstract
Chromatin remodelling precedes transcriptional and structural changes in heart failure. A body of work suggests roles for the developmental Wnt signalling pathway in cardiac remodelling. Hitherto, there is no evidence supporting a direct role of Wnt nuclear components in regulating chromatin landscapes in this process. We show that transcriptionally active, nuclear, phosphorylated(p)Ser675-β-catenin and TCF7L2 are upregulated in diseased murine and human cardiac ventricles. We report that inducible cardiomyocytes (CM)-specific pSer675-β-catenin accumulation mimics the disease situation by triggering TCF7L2 expression. This enhances active chromatin, characterized by increased H3K27ac and TCF7L2 occupancies to cardiac developmental and remodelling genes in vivo. Accordingly, transcriptomic analysis of β-catenin stabilized hearts shows a strong recapitulation of cardiac developmental processes like cell cycling and cytoskeletal remodelling. Mechanistically, TCF7L2 co-occupies distal genomic regions with cardiac transcription factors NKX2–5 and GATA4 in stabilized-β-catenin hearts. Validation assays revealed a previously unrecognized function of GATA4 as a cardiac repressor of the TCF7L2/β-catenin complex in vivo, thereby defining a transcriptional switch controlling disease progression. Conversely, preventing β-catenin activation post-pressure-overload results in a downregulation of these novel TCF7L2-targets and rescues cardiac function. Thus, we present a novel role for TCF7L2/β-catenin in CMs-specific chromatin modulation, which could be exploited for manipulating the ubiquitous Wnt pathway.
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Affiliation(s)
- Lavanya M Iyer
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Sankari Nagarajan
- Clinic for General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,Cancer Research UK (CRUK-CI), Cambridge CB2 0RE, UK
| | - Monique Woelfer
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Eric Schoger
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Sara Khadjeh
- German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany.,Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Maria Patapia Zafiriou
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Vijayalakshmi Kari
- Clinic for General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Jonas Herting
- German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany.,Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Sze Ting Pang
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Tobias Weber
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Franziska S Rathjens
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Thomas H Fischer
- German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany.,Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Karl Toischer
- German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany.,Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Gerd Hasenfuss
- German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany.,Department of Cardiology and Pneumology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Claudia Noack
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
| | - Steven A Johnsen
- Clinic for General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany
| | - Laura C Zelarayán
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen, Georg-August University, Goettingen 37075, Germany.,German Center for Cardiovascular Research (DZHK) partner site Goettingen, Goettingen 37075, Germany
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40
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Doyle MJ, Magli A, Estharabadi N, Amundsen D, Mills LJ, Martin CM. Sox7 Regulates Lineage Decisions in Cardiovascular Progenitor Cells. Stem Cells Dev 2019; 28:1089-1103. [PMID: 31154937 DOI: 10.1089/scd.2019.0040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Specification of the mesodermal lineages requires a complex set of morphogenetic events orchestrated by interconnected signaling pathways and gene regulatory networks. The transcription factor Sox7 has critical functions in differentiation of multiple mesodermal lineages, including cardiac, endothelial, and hematopoietic. Using a doxycycline-inducible mouse embryonic stem cell line, we have previously shown that expression of Sox7 in cardiovascular progenitor cells promotes expansion of endothelial progenitor cells (EPCs). In this study, we show that the ability of Sox7 to promote endothelial cell fate occurs at the expense of the cardiac lineage. Using ChIP-Seq coupled with ATAC-Seq we identify downstream target genes of Sox7 in cardiovascular progenitor cells and by integrating these data with transcriptomic analyses, we define Sox7-dependent gene programs specific to cardiac and EPCs. Furthermore, we demonstrate a protein-protein interaction between SOX7 and GATA4 and provide evidence that SOX7 interferes with the transcriptional activity of GATA4 on cardiac genes. In addition, we show that Sox7 modulates WNT and BMP signaling during cardiovascular differentiation. Our data represent the first genome-wide analysis of Sox7 function and reveal a critical role for Sox7 in regulating signaling pathways that affect cardiovascular progenitor cell differentiation.
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Affiliation(s)
- Michelle J Doyle
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Alessandro Magli
- 2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota.,3Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota
| | - Nima Estharabadi
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Danielle Amundsen
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Lauren J Mills
- 4Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Cindy M Martin
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
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41
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Abstract
The vertebrate heart tube forms from epithelial progenitor cells in the early embryo and subsequently elongates by progressive addition of second heart field (SHF) progenitor cells from adjacent splanchnic mesoderm. Failure to maximally elongate the heart results in a spectrum of morphological defects affecting the cardiac poles, including outflow tract alignment and atrioventricular septal defects, among the most common congenital birth anomalies. SHF cells constitute an atypical apicobasally polarized epithelium with dynamic basal filopodia, located in the dorsal wall of the pericardial cavity. Recent studies have highlighted the importance of epithelial architecture and cell adhesion in the SHF, particularly for signaling events that control the progenitor cell niche during heart tube elongation. The 22q11.2 deletion syndrome gene Tbx1 regulates progenitor cell status through modulating cell shape and filopodial activity and is required for SHF contributions to both cardiac poles. Noncanonical Wnt signaling and planar cell polarity pathway genes control epithelial polarity in the dorsal pericardial wall, as progenitor cells differentiate in a transition zone at the arterial pole. Defects in these pathways lead to outflow tract shortening. Moreover, new biomechanical models of heart tube elongation have been proposed based on analysis of tissue-wide forces driving epithelial morphogenesis in the SHF, including regional cell intercalation, cell cohesion, and epithelial tension. Regulation of the epithelial properties of SHF cells is thus emerging as a key step during heart tube elongation, adding a new facet to our understanding of the mechanisms underlying both heart morphogenesis and congenital heart defects.
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Affiliation(s)
- Claudio Cortes
- From Aix-Marseille University, CNRS UMR 7288, Developmental Biology Institute of Marseille, France
| | - Alexandre Francou
- From Aix-Marseille University, CNRS UMR 7288, Developmental Biology Institute of Marseille, France
| | - Christopher De Bono
- From Aix-Marseille University, CNRS UMR 7288, Developmental Biology Institute of Marseille, France
| | - Robert G Kelly
- From Aix-Marseille University, CNRS UMR 7288, Developmental Biology Institute of Marseille, France.
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42
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Kaplan NA, Wang W, Christiaen L. Initial characterization of Wnt-Tcf functions during Ciona heart development. Dev Biol 2019; 448:199-209. [PMID: 30635127 PMCID: PMC6487219 DOI: 10.1016/j.ydbio.2018.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 12/16/2022]
Abstract
In vertebrate embryos, the cardiopharyngeal mesoderm gives rise to both cardiac and branchiomeric head muscles. The canonical Wnt signaling pathway regulates many aspects of cardiomyocyte specification, and modulates a balance between skeletal and cardiac myogenesis during vertebrate head muscle development. However, the role of Wnt signaling during ascidian cardiopharyngeal development remains elusive. Here, we documented the expression of Wnt pathway components during cardiopharyngeal development in Ciona, and generated tools to investigate potential roles for Wnt signaling, and its transcriptional effector Tcf, on heart vs. pharyngeal muscle fate specification. Neither focused functional analyses nor lineage-specific transcriptome profiling uncovered a significant role for Tcf during early cardiac vs. pharyngeal muscle fate choice. By contrast, Wnt gene expression patterns of Frizzled4 and Lrp4/8 and CRISPR/Cas9-mediated Tcf knock-down suggested a later requirement for Wnt signaling during heart morphogenesis and/or cardiomyocyte differentiation. This study provides a provisional set of reagents to study Wnt signaling function in Ciona, and promising insights for future analyses of Wnt functions during heart organogenesis.
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Affiliation(s)
- Nicole A Kaplan
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA
| | - Wei Wang
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA
| | - Lionel Christiaen
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA.
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Over-expression of Hsp83 in grossly depleted hsrω lncRNA background causes synthetic lethality and l(2)gl phenocopy in Drosophila. J Biosci 2019. [DOI: 10.1007/s12038-019-9852-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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44
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Ghosh LD, Ravi V, Jain A, Panicker AG, Sundaresan NR, Chatterjee K. Sirtuin 6 mediated stem cell cardiomyogenesis on protein coated nanofibrous scaffolds. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 19:145-155. [PMID: 30926577 DOI: 10.1016/j.nano.2019.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 02/11/2019] [Accepted: 03/12/2019] [Indexed: 12/26/2022]
Abstract
The cellular niche provides combination of biomolecular and biophysical cues to control stem cell fate. Three-dimensional (3D) aligned nanofibrous scaffolds can effectively augment stem cell cardiomyogenesis. This work aims to understand the role of biomolecular signals from extracellular matrix (ECM) proteins and leverage them to further promote cardiomyogenesis on nanofibrous scaffolds. Human mesenchymal stem cells (hMSCs) were cultured on 3D aligned polycaprolactone scaffolds coated with different ECM proteins. Among multiple coatings tested, collagen coated fibers were most effective in promoting cardiomyogenesis as determined from increased expression of cardiac biomarkers and intracellular calcium flux. At molecular level, enhanced differentiation on collagen coated fibers was associated with an increased level of sirtuin 6 (SIRT6). Depletion of SIRT6 using siRNA attenuated the differentiation process through activation of Wnt signaling pathway. This study, thus, demonstrates that protein coated scaffolds can augment cardiomyogenic differentiation of stem cells through a combination of topographical and biomolecular signals.
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Affiliation(s)
- Lopamudra Das Ghosh
- Department of Materials Engineering, Indian Institute of Science, Bangalore, India
| | - Venkatraman Ravi
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India
| | - Aditi Jain
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Arpana G Panicker
- Department of Materials Engineering, Indian Institute of Science, Bangalore, India
| | - Nagalingam R Sundaresan
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India; Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India.
| | - Kaushik Chatterjee
- Department of Materials Engineering, Indian Institute of Science, Bangalore, India; Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India.
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45
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Hernández-Acevedo GN, López-Portales OH, Gutiérrez-Reyna DY, Cuevas-Fernández E, Kempis-Calanis LA, Labastida-Conde RG, Aguilar-Luviano OB, Ramírez-Pliego O, Spicuglia S, Lino-Alfaro B, Chagolla-López A, González-de la Vara LE, Santana MA. Protein complexes associated with β-catenin differentially influence the differentiation profile of neonatal and adult CD8 + T cells. J Cell Physiol 2019; 234:18639-18652. [PMID: 30924167 DOI: 10.1002/jcp.28502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 02/13/2019] [Accepted: 02/19/2019] [Indexed: 02/04/2023]
Abstract
The canonical Wnt signaling pathway is a master cell regulator involved in CD8+ T cell proliferation and differentiation. In human CD8+ T cells, this pathway induces differentiation into memory cells or a "stem cell memory like" population, which is preferentially present in cord blood. To better understand the role of canonical Wnt signals in neonatal or adult blood, we compared the proteins associated with β-catenin, in nonstimulated and Wnt3a-stimulated human neonatal and adult naive CD8+ T cells. Differentially recruited proteins established different complexes in adult and neonatal cells. In the former, β-catenin-associated proteins were linked to cell signaling and immunological functions, whereas those of neonates were linked to proliferation and metabolism. Wnt3a stimulation led to the recruitment and overexpression of Wnt11 in adult cells and Wnt5a in neonatal cells, suggesting a differential connexion with planar polarity and Wnt/Ca2+ noncanonical pathways, respectively. The chromatin immunoprecipitation polymerase chain reaction β-catenin was recruited to a higher level on the promoters of cell renewal genes in neonatal cells and of differentiation genes in those of adults. We found a preferential association of β-catenin with CBP in neonatal cells and with p300 in the adult samples, which could be involved in a higher self-renewal capacity of the neonatal cells and memory commitment in those of adults. Altogether, our results show that different proteins associated with β-catenin during Wnt3a activation mediate a differential response of neonatal and adult human CD8+ T cells.
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Affiliation(s)
- Gerson N Hernández-Acevedo
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Oscar H López-Portales
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Darely Y Gutiérrez-Reyna
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Erick Cuevas-Fernández
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Linda A Kempis-Calanis
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Rosario G Labastida-Conde
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Oscar B Aguilar-Luviano
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Oscar Ramírez-Pliego
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Salvatore Spicuglia
- Aix-Marseille University, Inserm, TAGC, UMR1090, Marseille, France.,Equipe Labélisée Ligue Contre le Cancer, Marseille, France
| | - Bárbara Lino-Alfaro
- Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Irapuato, Mexico
| | - Alicia Chagolla-López
- Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Irapuato, Mexico
| | | | - María Angélica Santana
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
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46
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Amin M, Kushida Y, Wakao S, Kitada M, Tatsumi K, Dezawa M. Cardiotrophic Growth Factor-Driven Induction of Human Muse Cells Into Cardiomyocyte-Like Phenotype. Cell Transplant 2019; 27:285-298. [PMID: 29637816 PMCID: PMC5898685 DOI: 10.1177/0963689717721514] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Multilineage-differentiating stress-enduring (Muse) cells are endogenous nontumorigenic stem cells collectable as stage-specific embryonic antigen 3 (SSEA-3) + from various organs including the bone marrow and are pluripotent-like. The potential of human bone marrow-derived Muse cells to commit to cardiac lineage cells was evaluated. We found that (1) initial treatment of Muse cells with 5'-azacytidine in suspension culture successfully accelerated demethylation of cardiac marker Nkx2.5 promoter; (2) then transferring the cells onto adherent culture and treatment with early cardiac differentiation factors including wingless-int (Wnt)-3a, bone morphogenetic proteins (BMP)-2/4, and transforming growth factor (TGF) β1; and (3) further treatment with late cardiac differentiation cytokines including cardiotrophin-1 converted Muse cells into cardiomyocyte-like cells that expressed α-actinin and troponin-I with a striation-like pattern. MLC2a expression in the final step suggested differentiation of the cells into an atrial subtype. MLC2v, a marker for a mature ventricular subtype, was expressed when cells were treated with Dickkopf-related protein 1 (DKK-1) and Noggin, inhibitors of Wnt3a and BMP-4, respectively, between steps (2) and (3). None of the steps included exogenous gene transfection, making induced cells feasible for future clinical application.
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Affiliation(s)
- Mohamed Amin
- 1 Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Japan.,2 Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahlia, Egypt
| | - Yoshihiro Kushida
- 1 Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shohei Wakao
- 1 Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masaaki Kitada
- 1 Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazuki Tatsumi
- 1 Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Japan.,3 Life Science Institute Inc., Regenerative Medicine Division, Nagoya, Japan
| | - Mari Dezawa
- 1 Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Japan
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47
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Bartoli-Leonard F, Wilkinson FL, Langford-Smith AWW, Alexander MY, Weston R. The Interplay of SIRT1 and Wnt Signaling in Vascular Calcification. Front Cardiovasc Med 2018; 5:183. [PMID: 30619890 PMCID: PMC6305318 DOI: 10.3389/fcvm.2018.00183] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/04/2018] [Indexed: 12/24/2022] Open
Abstract
Vascular calcification is a major health risk and is highly correlated with atherosclerosis, diabetes, and chronic kidney disease. The development of vascular calcification is an active and complex process linked with a multitude of signaling pathways, which regulate promoters and inhibitors of osteogenesis, the balance of which become deregulated in disease conditions. SIRT1, a protein deacetylase, known to be protective in inhibiting oxidative stress and inflammation within the vessel wall, has been shown as a possible key player in modulating the cell-fate determining canonical Wnt signaling pathways. Suppression of SIRT1 has been reported in patients suffering with cardiovascular pathologies, suggesting that the sustained acetylation of osteogenic factors could contribute to their activation and in turn, lead to the progression of calcification. There is clear evidence of the synergy between β-Catenin and elevated Runx2, and with Wnt signaling being β-Catenin dependent, further understanding is needed as to how these molecular pathways converge and interact, in order to provide novel insight into the mechanism by which smooth muscle cells switch to an osteogenic differentiation programme. Therefore, this review will describe the current concepts of pathological soft tissue mineralization, with a focus on the contribution of SIRT1 as a regulator of Wnt signaling and its targets, discussing SIRT1 as a potential target for manipulation and therapy.
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Affiliation(s)
- Francesca Bartoli-Leonard
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - Fiona L Wilkinson
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - Alex W W Langford-Smith
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - M Y Alexander
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - Ria Weston
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
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Giannakou A, Sicko RJ, Kay DM, Zhang W, Romitti PA, Caggana M, Shaw GM, Jelliffe-Pawlowski LL, Mills JL. Copy number variants in hypoplastic right heart syndrome. Am J Med Genet A 2018; 176:2760-2767. [DOI: 10.1002/ajmg.a.40527] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 06/23/2018] [Accepted: 08/04/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Andreas Giannakou
- Division of Intramural Population Health Research, Department of Health and Human Services; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda Maryland
| | - Robert J. Sicko
- Division of Genetics, Wadsworth Center, New York State Department of Health; Albany New York
| | - Denise M. Kay
- Division of Genetics, Wadsworth Center, New York State Department of Health; Albany New York
| | - Wei Zhang
- Division of Intramural Population Health Research, Department of Health and Human Services; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda Maryland
| | - Paul A. Romitti
- Department of Epidemiology, College of Public Health; The University of Iowa; Iowa City Iowa
| | - Michele Caggana
- Division of Genetics, Wadsworth Center, New York State Department of Health; Albany New York
| | - Gary M. Shaw
- Department of Pediatrics; Stanford University School of Medicine; Stanford California
| | | | - James L. Mills
- Division of Intramural Population Health Research, Department of Health and Human Services; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda Maryland
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49
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He X, Chen Y, Zhang C, Gong W, Zhang X, Nie S. Polycyclic Aromatic Hydrocarbons from Particulate Matter 2.5 (PM2.5) in Polluted Air Changes miRNA Profile Related to Cardiovascular Disease. Med Sci Monit 2018; 24:5925-5934. [PMID: 30144390 PMCID: PMC6120165 DOI: 10.12659/msm.908106] [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] [Indexed: 12/31/2022] Open
Abstract
Background Particulate matter 2.5 (PM2.5) in air pollution is regarded as a risk factor for cardiovascular disease (CVDs). Recently, it has become well accepted that polycyclic aromatic hydrocarbons (PAHs) in PM2.5 impacts human CVDs. However, few studies have shown miRNAs affected by PAHs play a critical role in transcriptional regulation related to cardiovascular development and disease. Material/Methods Human umbilical cord vein cells (HUVECs) incubated prior to treatment with PAHs at various concentrations (0, 100, 200, 300, 400, and 500 μg/ml) of PAHs particle solutions were added to the culture medium for 24 h. We performed isolation and sequencing of small RNAs and analysis of small RNA sequences and differential expression. The M3RNA database was used to predict miRNA-miRNA interactions. Tools from the DAVID database were used to perform the GO functional analysis of predicted miRNA target genes. A First-Strand cDNA Synthesis Kit was used to synthesis cDNA. Results miRNA155 was revealed as a key regulator in PAHs treatment. The putative targets of upregulated miRNA in PAHs treatment indicated that the downregulated genes were enriched in biological pathways such as Wnt signaling and ErbB signaling, which are crucial for the development of vasculature. Conclusions In general, our results suggest that PAHs taken by PM2.5 can decrease cardiovascular-related gene expression through upregulating miRNA, which may be a new target for therapy in the future.
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Affiliation(s)
- Xiaonan He
- Emergency Citical Care Center, Beijing AnZhen Hospital, Capital Medical University, Beijing, China (mainland)
| | - Yu Chen
- Department of Cardiology, China-Japan United Hospital Affiliated Jilin University, Changchun, Jilin, China (mainland)
| | - Cheng Zhang
- Department of Cardiology, China-Japan United Hospital Affiliated Jilin University, Changchun, Jilin, China (mainland)
| | - Wei Gong
- Emergency Citical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China (mainland)
| | - Xinyong Zhang
- Emergency Citical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China (mainland)
| | - Shaoping Nie
- Emergency Citical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China (mainland)
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50
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Allam AH, Charnley M, Russell SM. Context-Specific Mechanisms of Cell Polarity Regulation. J Mol Biol 2018; 430:3457-3471. [PMID: 29886017 DOI: 10.1016/j.jmb.2018.06.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/04/2018] [Accepted: 06/04/2018] [Indexed: 12/31/2022]
Abstract
Cell polarity is an essential process shared by almost all animal tissues. Moreover, cell polarity enables cells to sense and respond to the cues provided by the neighboring cells and the surrounding microenvironment. These responses play a critical role in regulating key physiological processes, including cell migration, proliferation, differentiation, vesicle trafficking and immune responses. The polarity protein complexes regulating these interactions are highly evolutionarily conserved between vertebrates and invertebrates. Interestingly, these polarity complexes interact with each other and key signaling pathways in a cell-polarity context-dependent manner. However, the exact mechanisms by which these interactions take place are poorly understood. In this review, we will focus on the roles of the key polarity complexes SCRIB, PAR and Crumbs in regulating different forms of cell polarity, including epithelial cell polarity, cell migration, asymmetric cell division and the T-cell immunological synapse assembly and signaling.
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Affiliation(s)
- Amr H Allam
- Centre for Micro-Photonics, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Australia; Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Australia.
| | - Mirren Charnley
- Centre for Micro-Photonics, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Australia; Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Australia; Biointerface Engineering Group, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia.
| | - Sarah M Russell
- Centre for Micro-Photonics, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Australia; Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Australia; Department of Pathology, The University of Melbourne, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Australia.
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