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He X, Dutta S, Liang J, Paul C, Huang W, Xu M, Chang V, Ao I, Wang Y. Direct cellular reprogramming techniques for cardiovascular regenerative therapeutics. Can J Physiol Pharmacol 2024; 102:1-13. [PMID: 37903419 DOI: 10.1139/cjpp-2023-0088] [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] [Indexed: 11/01/2023]
Abstract
Cardiovascular diseases remain a leading cause of hospitalization affecting approximately 38 million people worldwide. While pharmacological and revascularization techniques can improve the patient's survival and quality of life, they cannot help reversing myocardial infarction injury and heart failure. Direct reprogramming of somatic cells to cardiomyocyte and cardiac progenitor cells offers a new approach to cellular reprogramming and paves the way for translational regenerative medicine. Direct reprogramming can bypass the pluripotent stage with the potential advantage of non-immunogenic cell products, reduced carcinogenic risk, and no requirement for embryonic tissue. The process of directly reprogramming cardiac cells was first achieved through the overexpression of transcription factors such as GATA4, MEF2C, and TBX5. However, over the past decade, significant work has been focused on enhancing direct reprogramming using a mixture of transcription factors, microRNAs, and small molecules to achieve cardiac cell fate. This review discusses the evolution of direct reprogramming, recent progress in achieving efficient cardiac cell fate conversion, and describes the reprogramming mechanisms at a molecular level. We also explore various viral and non-viral delivery methods currently being used to aid in the delivery of reprogramming factors to improve efficiency. However, further studies will be needed to overcome molecular and epigenetic barriers to successfully achieve translational cardiac regenerative therapeutics.
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Affiliation(s)
- Xingyu He
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Suchandrima Dutta
- Department of Internal MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Jialiang Liang
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Christian Paul
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Wei Huang
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Meifeng Xu
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Vivian Chang
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Ian Ao
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
| | - Yigang Wang
- Department of Pathology & Laboratory MedicineCollege of Medicine, University of Cincinnati, Cincinnati, OH 45267-0529, USA
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Trąbska-Kluch B, Braun M, Orzechowska M, Paszek S, Zuchowska A, Sołek J, Kluska A, Fijuth J, Jesionek-Kupnicka D, Zawlik I. Potential Prognostic Value of GATA4 Depends on the p53 Expression in Primary Glioblastoma Patients. Genes (Basel) 2023; 14:1146. [PMID: 37372326 DOI: 10.3390/genes14061146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND Primary glioblastoma is characterized by an extremely poor prognosis. The promoter methylation of GATA4 leads to the loss of its expression in many cancer types. The formation of high-grade astrocytomas can be promoted by the concurrent loss of TP53 and GATA4 in normal human astrocytes. Nevertheless, the impact of GATA4 alterations with linkage to TP53 changes in gliomagenesis is poorly understood. This study aimed to evaluate GATA4 protein expression, GATA4 promoter methylation, p53 expression, TP53 promoter methylation, and mutation status in patients with primary glioblastoma and to assess the possible prognostic impact of these alterations on overall survival. MATERIALS AND METHODS Thirty-one patients with primary glioblastoma were included. GATA4 and p53 expressions were determined immunohistochemically, and GATA4 and TP53 promoter methylations were analyzed via methylation-specific PCR. TP53 mutations were investigated via Sanger sequencing. RESULTS The prognostic value of GATA4 depends on p53 expression. Patients without GATA4 protein expression were more frequently negative for TP53 mutations and had better prognoses than the GATA4 positive patients. In patients positive for GATA4 protein expression, p53 expression was associated with the worst outcome. However, in patients positive for p53 expression, the loss of GATA4 protein expression seemed to be associated with improved prognosis. GATA4 promoter methylation was not associated with a lack of GATA4 protein expression. CONCLUSIONS Our data indicate that there is a possibility that GATA4 could function as a prognostic factor in glioblastoma patients, but in connection with p53 expression. A lack of GATA4 expression is not dependent on GATA4 promoter methylation. GATA4 alone has no influence on survival time in glioblastoma patients.
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Affiliation(s)
- Berenika Trąbska-Kluch
- Department of Teleradiotherapy, Copernicus Memorial Hospital, 93-513 Lodz, Poland
- Department of Radiotherapy, Chair of Oncology, Medical University of Lodz, 93-513 Lodz, Poland
| | - Marcin Braun
- Department of Pathology, Chair of Oncology, Medical University of Lodz, 93-513 Lodz, Poland
| | - Magdalena Orzechowska
- Department of Molecular Carcinogenesis, Medical University of Lodz, 93-513 Lodz, Poland
| | - Sylwia Paszek
- Laboratory of Molecular Biology, Centre for Innovative Research in Medical and Natural Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
- Department of General Genetics, Institute of Medical Sciences, College of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
| | - Alina Zuchowska
- Laboratory of Molecular Biology, Centre for Innovative Research in Medical and Natural Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
- Department of General Genetics, Institute of Medical Sciences, College of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
| | - Julia Sołek
- Department of Pathology, Chair of Oncology, Medical University of Lodz, 93-513 Lodz, Poland
| | - Adam Kluska
- Brachytherapy Department, Greater Poland Cancer Centre, 61-866 Poznan, Poland
| | - Jacek Fijuth
- Department of Teleradiotherapy, Copernicus Memorial Hospital, 93-513 Lodz, Poland
- Department of Radiotherapy, Chair of Oncology, Medical University of Lodz, 93-513 Lodz, Poland
| | | | - Izabela Zawlik
- Laboratory of Molecular Biology, Centre for Innovative Research in Medical and Natural Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
- Department of General Genetics, Institute of Medical Sciences, College of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
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Karatsai O, Lehka L, Wojton D, Grabowska AI, Duda MK, Lenartowski R, Redowicz MJ. Unconventional myosin VI in the heart: Involvement in cardiac dysfunction progressing with age. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166748. [PMID: 37169038 DOI: 10.1016/j.bbadis.2023.166748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
Hypertrophic cardiomyopathy is the most common cardiovascular disease, which is characterized by structural and functional myocardial abnormalities. It is caused predominantly by autosomal dominant mutations, mainly in genes encoding cardiac sarcomeric proteins, resulting in diverse phenotypical patterns and a heterogenic clinical course. Unconventional myosin VI (MVI) is one of the proteins important for heart function, as it was shown that a point mutation within MYO6 is associated with left ventricular hypertrophy. Previously, we showed that MVI is expressed in the cardiac muscle, where it localizes to the sarcoplasmic reticulum and intercalated discs. Here, we addressed the mechanisms of its involvement in cardiac dysfunction in Snell's waltzer mice (natural MVI knockouts) during heart development. We showed that heart enlargement was already seen in the E14.5 embryos and newborn animals (P0), and was maintained throughout the examined lifespan (up to 12 months). The higher levels of MVI were observed in the hearts of E14.5 embryos and P0 of control heterozygous mice. A search for the mechanisms behind the observed phenotype revealed several changes, accumulation of which resulted in age-progressing heart dysfunction. The main changes that mostly contribute to this functional impairment are the increase in cardiomyocyte proliferation in newborns, disorganization of intercalated discs, and overexpression of SERCA2 in hearts isolated from 12-month-old mice, indicative of functional alterations of sarcoplasmic reticulum. Also, possible aberrations in the heart vascularization, observed in 12-month-old animals could be additional factors responsible for MVI-associated heart dysfunction.
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Affiliation(s)
- Olena Karatsai
- Laboratory of Molecular Basis of Cell Motility, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur St., 02-093 Warsaw, Poland.
| | - Lilya Lehka
- Laboratory of Molecular Basis of Cell Motility, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur St., 02-093 Warsaw, Poland.
| | - Dominika Wojton
- Laboratory of Molecular Basis of Cell Motility, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur St., 02-093 Warsaw, Poland.
| | - Anna Izabela Grabowska
- Laboratory of Molecular Basis of Cell Motility, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur St., 02-093 Warsaw, Poland.
| | - Monika Katarzyna Duda
- Department of Clinical Physiology, Centre of Postgraduate Medical Education, 99/103 Marymoncka St., 01-813 Warsaw, Poland.
| | - Robert Lenartowski
- Faculty of Biological and Veterinary Sciences, The Nicolaus Copernicus University in Torun, 1 Lwowska St., 87-100 Torun, Poland.
| | - Maria Jolanta Redowicz
- Laboratory of Molecular Basis of Cell Motility, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur St., 02-093 Warsaw, Poland.
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Jiang Q, Palombo V, Sherlock DN, Vailati-Riboni M, D’Andrea M, Yoon I, Loor JJ. Alterations in ileal transcriptomics during an intestinal barrier challenge in lactating Holstein cows fed a Saccharomyces cerevisiae fermentation product identify potential regulatory processes. J Anim Sci 2023; 101:skad277. [PMID: 37616596 PMCID: PMC10576520 DOI: 10.1093/jas/skad277] [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: 04/21/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023] Open
Abstract
Stressors such as lack of access to feed, hot temperatures, transportation, and pen changes can cause impairment of ruminal and intestinal barrier function, also known as "leaky gut". Despite the known benefits of some nutritional approaches during periods of stress, little is understood regarding the underlying mechanisms, especially in dairy cows. We evaluated the effect of feeding a Saccharomyces cerevisiae fermentation product (SCFP; NutriTek, Diamond V, Cedar Rapids, IA) on the ileal transcriptome in response to feed restriction (FR), an established model to induce intestinal barrier dysfunction. Multiparous cows [97.1 ± 7.6 days in milk (DIM); n = 5/group] fed a control diet or control plus 19 g/d SCFP for 9 wk were subjected to an FR challenge for 5 d during which they were fed 40% of their ad libitum intake from the 7 d before FR. All cows were slaughtered at the end of FR, and ileal scrapping RNA was used for RNAseq (NovaSeq 6000, 100 bp read length). Statistical analysis was performed in R and bioinformatics using the KEGG (Kyoto Encyclopedia of Genes and Genomes) and GO databases. One thousand six hundred and ninety-six differentially expressed genes (DEG; FDR-adjusted P ≤ 0.10) were detected in SCFP vs. control, with 451 upregulated and 1,245 downregulated. "Mucin type O-glycan biosynthesis" was the top downregulated KEGG pathway due to downregulation of genes catalyzing glycosylation of mucins (GCNT3, GALNT5, B3GNT3, GALNT18, and GALNT14). An overall downregulation of cell and tissue structure genes (e.g., extracellular matrix proteins) associated with collagen (COL6A1, COL1A1, COL4A1, COL1A2, and COL6A2), laminin (LAMB2), and integrins (ITGA8, ITGA2, and ITGA5) also were detected with SCFP. A subset of DEG enriched in the GO term "extracellular exosome" and "extracellular space". Chemokines within "Cytokine-cytokine receptor interaction pathways" such as CCL16, CCL21, CCL14, CXCL12, and CXCL14 were downregulated by SCFP. The "Glutathione metabolism" pathway was upregulated by SCFP, including GSTA1 and RRM2B among the top upregulated genes, and GSTM1 and GPX8 as top downregulated genes. There were 9 homeobox transcription factors among the top 50 predicted transcription factors using the RNAseq DEG dataset, underscoring the importance of cell differentiation as a potential target of dietary SCFP. Taken together, SCFP downregulated immune-, ECM-, and mucin synthesis-related genes during FR. Homeobox transcription factors appear important for the transcriptional response of SCFP.
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Affiliation(s)
- Qianming Jiang
- Department of Animal Sciences, University of Illinois, Urbana 61801, IL, USA
| | | | - Danielle N Sherlock
- Department of Animal Sciences, University of Illinois, Urbana 61801, IL, USA
| | | | | | | | - Juan J Loor
- Department of Animal Sciences, University of Illinois, Urbana 61801, IL, USA
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Chen G, Wang M, Zhu P, Wang G, Hu T. Adverse effects of SYP-3343 on zebrafish development via ROS-mediated mitochondrial dysfunction. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129382. [PMID: 35749898 DOI: 10.1016/j.jhazmat.2022.129382] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 06/01/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
As a newly-invented and highly-efficiency strobilurin fungicide, pyraoxystrobin (SYP-3343) has been recognized as a highly poisonous toxin for a variety of aquatic organisms. Nevertheless, the developmental toxicity and potential mechanism of SYP-3343 have not been well-documented. The results showed that SYP-3343 was relatively stable and maintained within the range of 20 % in 24 h, and the LC50 value to embryos at 72 hpf was 17.13 μg/L. The zebrafish embryotoxicity induced by 1, 2, 4, and 8 μg/L SYP-3343 is demonstrated by repressive embryo incubation, enhancive mortality rate, abnormal heart rate, malformed morphological characteristic, and impaired spontaneous coiling, indicating SYP-3343 mostly exerted its toxicity in a dose- and time-dependent manner. Besides SYP-3343 was critically involved in regulating cell cycle, mitochondrial membrane potential, and reactive oxygen species production as well as zebrafish primary cells apoptosis, which can be mitigated using antioxidant N-acetyl-L-cysteine. A significant change occurred in total protein content, the biochemical indices, and antioxidant capacities owing to SYP-3343 exposure. Additionally, SYP-3343 altered the mRNA levels of heart development-, mitochondrial function-, and apoptosis-related genes in zebrafish embryos. These results indicated that SYP-3343 induced apoptosis accompanying reactive oxygen species-initiated mitochondrial dysfunction in zebrafish embryos.
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Affiliation(s)
- Guoliang Chen
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Mingxing Wang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Panpan Zhu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Guixue Wang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Tingzhang Hu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400030, China.
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Zhang C, Zhao H, Song X, Wang J, Zhao S, Deng H, He L, Zhou X, Yin X, Zhang K, Zhang Y, Wu Z, Chen Q, Du J, Yu D, Zhang S, Deng W. Transcription factor GATA4 drives RNA polymerase III-directed transcription and transformed cell proliferation through a filamin A/GATA4/SP1 pathway. J Biol Chem 2022; 298:101581. [PMID: 35038452 PMCID: PMC8857480 DOI: 10.1016/j.jbc.2022.101581] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/31/2021] [Accepted: 01/03/2022] [Indexed: 11/27/2022] Open
Abstract
RNA polymerase III (pol III) products play fundamental roles in a variety of cellular processes, including protein synthesis and cancer cell proliferation. In addition, dysregulation of pol III-directed transcription closely correlates with tumorigenesis. It is therefore of interest to identify novel pathways or factors governing pol III-directed transcription. Here, we show that transcription factor (TF) GATA binding protein 4 (GATA4) expression in SaOS2 cells was stimulated by the silencing of filamin A (FLNA), a repressor of pol III-directed transcription, suggesting that GATA4 is potentially associated with the regulation of pol III-directed transcription. Indeed, we show that GATA4 expression positively correlates with pol III-mediated transcription and tumor cell proliferation. Mechanistically, we found that GATA4 depletion inhibits the occupancies of the pol III transcription machinery factors at the loci of pol III target genes by reducing expression of both TFIIIB subunit TFIIB-related factor 1 and TFIIIC subunit general transcription factor 3C subunit 2 (GTF3C2). GATA4 has been shown to activate specificity factor 1 (Sp1) gene transcription by binding to the Sp1 gene promoter, and Sp1 has been confirmed to activate pol III gene transcription by directly binding to both Brf1 and Gtf3c2 gene promoters. Thus, the findings from this study suggest that GATA4 links FLNA and Sp1 signaling to form an FLNA/GATA4/Sp1 axis to modulate pol III-directed transcription and transformed cell proliferation. Taken together, these results provide novel insights into the regulatory mechanism of pol III-directed transcription.
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Affiliation(s)
- Cheng Zhang
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Houliang Zhao
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Xiaoye Song
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Juan Wang
- School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
| | - Shasha Zhao
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Huan Deng
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Liu He
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Xiangyu Zhou
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Xiaomei Yin
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Kewei Zhang
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Yue Zhang
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Zhongyu Wu
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Qiyue Chen
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Jiannan Du
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Deen Yu
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China
| | - Shihua Zhang
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China.
| | - Wensheng Deng
- School of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China.
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Viger RS, de Mattos K, Tremblay JJ. Insights Into the Roles of GATA Factors in Mammalian Testis Development and the Control of Fetal Testis Gene Expression. Front Endocrinol (Lausanne) 2022; 13:902198. [PMID: 35692407 PMCID: PMC9178088 DOI: 10.3389/fendo.2022.902198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 04/22/2022] [Indexed: 12/28/2022] Open
Abstract
Defining how genes get turned on and off in a correct spatiotemporal manner is integral to our understanding of the development, differentiation, and function of different cell types in both health and disease. Testis development and subsequent male sex differentiation of the XY fetus are well-orchestrated processes that require an intricate network of cell-cell communication and hormonal signals that must be properly interpreted at the genomic level. Transcription factors are at the forefront for translating these signals into a coordinated genomic response. The GATA family of transcriptional regulators were first described as essential regulators of hematopoietic cell differentiation and heart morphogenesis but are now known to impact the development and function of a multitude of tissues and cell types. The mammalian testis is no exception where GATA factors play essential roles in directing the expression of genes crucial not only for testis differentiation but also testis function in the developing male fetus and later in adulthood. This minireview provides an overview of the current state of knowledge of GATA factors in the male gonad with a particular emphasis on their mechanisms of action in the control of testis development, gene expression in the fetal testis, testicular disease, and XY sex differentiation in humans.
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Affiliation(s)
- Robert S. Viger
- Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle and Department of Obstetrics, Gynecology, and Reproduction, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
- Reproduction, Mother and Child Health, Centre de recherche du centre hospitalier universitaire de Québec—Université Laval, Quebec City, QC, Canada
- *Correspondence: Robert S. Viger,
| | - Karine de Mattos
- Reproduction, Mother and Child Health, Centre de recherche du centre hospitalier universitaire de Québec—Université Laval, Quebec City, QC, Canada
| | - Jacques J. Tremblay
- Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle and Department of Obstetrics, Gynecology, and Reproduction, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
- Reproduction, Mother and Child Health, Centre de recherche du centre hospitalier universitaire de Québec—Université Laval, Quebec City, QC, Canada
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Abbasi S, Mohsen-Pour N, Naderi N, Rahimi S, Maleki M, Kalayinia S. In silico analysis of GATA4 variants demonstrates main contribution to congenital heart disease. J Cardiovasc Thorac Res 2021; 13:336-354. [PMID: 35047139 PMCID: PMC8749364 DOI: 10.34172/jcvtr.2021.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/05/2021] [Accepted: 09/24/2021] [Indexed: 12/05/2022] Open
Abstract
Introduction: Congenital heart disease (CHD) is the most common congenital abnormality and the main cause of infant mortality worldwide. Some of the mutations that occur in the GATA4 gene region may result in different types of CHD. Here, we report our in silico analysis of gene variants to determine the effects of the GATA4 gene on the development of CHD.
Methods: Online 1000 Genomes Project, ExAC, gnomAD, GO-ESP, TOPMed, Iranome, GME, ClinVar, and HGMD databases were drawn upon to collect information on all the reported GATA4 variations.The functional importance of the genetic variants was assessed by using SIFT, MutationTaster, CADD,PolyPhen-2, PROVEAN, and GERP prediction tools. Thereafter, network analysis of the GATA4protein via STRING, normal/mutant protein structure prediction via HOPE and I-TASSER, and phylogenetic assessment of the GATA4 sequence alignment via ClustalW were performed.
Results: The most frequent variant was c.874T>C (45.58%), which was reported in Germany.Ventricular septal defect was the most frequent type of CHD. Out of all the reported variants of GATA4,38 variants were pathogenic. A high level of pathogenicity was shown for p.Gly221Arg (CADD score=31), which was further analyzed.
Conclusion: The GATA4 gene plays a significant role in CHD; we, therefore, suggest that it be accorded priority in CHD genetic screening.
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Affiliation(s)
- Shiva Abbasi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Neda Mohsen-Pour
- Zanjan Pharmaceutical Biotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Niloofar Naderi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Shahin Rahimi
- Department of Cardiology, Rajaie Cardiovascular Medical and Research Centre, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Maleki
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Kalayinia
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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Triptolide impairs glycolysis by suppressing GATA4/Sp1/PFKP signaling axis in mouse Sertoli cells. Toxicol Appl Pharmacol 2021; 425:115606. [PMID: 34087332 DOI: 10.1016/j.taap.2021.115606] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 11/23/2022]
Abstract
Triptolide (TP), a primary bioactive ingredient isolated from the traditional Chinese herbal medicine Tripterygium wilfordii Hook. F. (TWHF), has attracted great interest for its therapeutic biological activities in inflammation and autoimmune disease. However, its clinical use is limited by severe testicular toxicity, and the underlying mechanism has not been elucidated. Our preliminary evidence demonstrated that TP disrupted glucose metabolism and caused testicular toxicity. During spermatogenesis, Sertoli cells (SCs) provide lactate as an energy source to germ cells by glycolysis. The transcription factors GATA-binding protein 4 (GATA4) and specificity protein 1 (Sp1) can regulate glycolysis. Based on this evidence, we speculate that TP causes abnormal glycolysis in SCs by influencing the expression of the transcription factors GATA4 and Sp1. The mechanism of TP-induced testicular toxicity was investigated in vitro and in vivo. The data indicated that TP decreased glucose consumption, lactate production, and the mRNA levels of glycolysis-related transporters and enzymes. TP also downregulated the protein expression of the transcription factors GATA4 and Sp1, as well as the glycolytic enzyme phosphofructokinase platelet (PFKP). Phosphorylated GATA4 and nuclear GATA4 protein levels were reduced in a dose- and time-dependent manner after TP incubation. Similar effects were observed in shGata4-treated TM4 cells and BALB/c mice administered 0.4 mg/kg TP for 28 days, and glycolysis was also inhibited. Gata4 knockdown downregulated Sp1 and PFKP expression. Furthermore, the Sp1 inhibitor plicamycin inhibited PFKP protein levels in TM4 cells. In conclusion, TP inhibited GATA4-mediated glycolysis by suppressing Sp1-dependent PFKP expression in SCs and caused testicular toxicity.
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Dai W, Kesaraju S, Weber CR. Transcriptional factors in calcium mishandling and atrial fibrillation development. Pflugers Arch 2021; 473:1177-1197. [PMID: 34003377 DOI: 10.1007/s00424-021-02553-y] [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: 11/04/2020] [Revised: 01/19/2021] [Accepted: 02/05/2021] [Indexed: 12/19/2022]
Abstract
Healthy cardiac conduction relies on the coordinated electrical activity of distinct populations of cardiomyocytes. Disruption of cell-cell conduction results in cardiac arrhythmias, a leading cause of morbidity and mortality worldwide. Recent genetic studies have highlighted a major heritable component and identified numerous loci associated with risk of atrial fibrillation, including transcription factor genes, particularly those important in cardiac development, microRNAs, and long noncoding RNAs. Identification of such genetic factors has prompted the search to understand the mechanisms that underlie the genetic component of AF. Recent studies have found several mechanisms by which genetic alterations can result in AF formation via disruption of calcium handling. Loss of developmental transcription factors in adult cardiomyocytes can result in disruption of SR calcium ATPase, sodium calcium exchanger, calcium channels, among other ion channels, which underlie action potential abnormalities and triggered activity that can contribute to AF. This review aims to summarize the complex network of transcription factors and their roles in calcium handling.
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Affiliation(s)
- Wenli Dai
- Department of Pathology, University of Chicago, Chicago, IL, USA
| | - Sneha Kesaraju
- Department of Pathology, University of Chicago, Chicago, IL, USA
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Scărlătescu AI, Micheu MM, Popa-Fotea NM, Dorobanțu M. MicroRNAs in Acute ST Elevation Myocardial Infarction-A New Tool for Diagnosis and Prognosis: Therapeutic Implications. Int J Mol Sci 2021; 22:4799. [PMID: 33946541 PMCID: PMC8124280 DOI: 10.3390/ijms22094799] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 02/07/2023] Open
Abstract
Despite diagnostic and therapeutic advances, coronary artery disease and especially its extreme manifestation, ST elevation myocardial infarction (STEMI), remain the leading causes of morbidity and mortality worldwide. Early and prompt diagnosis is of great importance regarding the prognosis of STEMI patients. In recent years, microRNAs (miRNAs) have emerged as promising tools involved in many pathophysiological processes in various fields, including cardiovascular diseases. In acute coronary syndromes (ACS), circulating levels of miRNAs are significantly elevated, as an indicator of cardiac damage, making them a promising marker for early diagnosis of myocardial infarction. They also have prognostic value and great potential as therapeutic targets considering their key function in gene regulation. This review aims to summarize current information about miRNAs and their role as diagnostic, prognostic and therapeutic targets in STEMI patients.
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Affiliation(s)
- Alina Ioana Scărlătescu
- Department of Cardiology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (N.-M.P.-F.); (M.D.)
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, 014461 Bucharest, Romania;
| | - Miruna Mihaela Micheu
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, 014461 Bucharest, Romania;
| | - Nicoleta-Monica Popa-Fotea
- Department of Cardiology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (N.-M.P.-F.); (M.D.)
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, 014461 Bucharest, Romania;
| | - Maria Dorobanțu
- Department of Cardiology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (N.-M.P.-F.); (M.D.)
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, 014461 Bucharest, Romania;
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12
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Lin HB, Naito K, Oh Y, Farber G, Kanaan G, Valaperti A, Dawood F, Zhang L, Li GH, Smyth D, Moon M, Liu Y, Liang W, Rotstein B, Philpott DJ, Kim KH, Harper ME, Liu PP. Innate Immune Nod1/RIP2 Signaling Is Essential for Cardiac Hypertrophy but Requires Mitochondrial Antiviral Signaling Protein for Signal Transductions and Energy Balance. Circulation 2020; 142:2240-2258. [PMID: 33070627 DOI: 10.1161/circulationaha.119.041213] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Cardiac hypertrophy is a key biological response to injurious stresses such as pressure overload and, when excessive, can lead to heart failure. Innate immune activation by danger signals, through intracellular pattern recognition receptors such as nucleotide-binding oligomerization domain 1 (Nod1) and its adaptor receptor-interacting protein 2 (RIP2), might play a major role in cardiac remodeling and progression to heart failure. We hypothesize that Nod1/RIP2 are major contributors to cardiac hypertrophy, but may not be sufficient to fully express the phenotype alone. METHODS To elucidate the contribution of Nod1/RIP2 signaling to cardiac hypertrophy, we randomized Nod1-/-, RIP2-/-, or wild-type mice to transverse aortic constriction or sham operations. Cardiac hypertrophy, fibrosis, and cardiac function were examined in these mice. RESULTS Nod1 and RIP2 proteins were upregulated in the heart after transverse aortic constriction, and this was paralleled by increased expression of mitochondrial proteins, including mitochondrial antiviral signaling protein (MAVS). Nod1-/- and RIP2-/- mice subjected to transverse aortic constriction exhibited better survival, improved cardiac function, and decreased cardiac hypertrophy. Downstream signal transduction pathways that regulate inflammation and fibrosis, including NF (nuclear factor) κB and MAPK (mitogen-activated protein kinase)-GATA4/p300, were reduced in both Nod1-/- and RIP2-/- mice after transverse aortic constriction compared with wild-type mice. Coimmunoprecipitation of extracted cardiac proteins and confocal immunofluorescence microscopy showed that Nod1/RIP2 interaction was robust and that this complex also included MAVS as an essential component. Suppression of MAVS expression attenuated the complex formation, NF κB signaling, and myocyte hypertrophy. Interrogation of mitochondrial function compared in the presence or ablation of MAVS revealed that MAVS serves to suppress mitochondrial energy output and mediate fission/fusion related dynamic changes. The latter is possibly linked to mitophagy during cardiomyocytes stress, which may provide an intriguing link between innate immune activation and mitochondrial energy balance under stress or injury conditions. CONCLUSIONS We have identified that innate immune Nod1/RIP2 signaling is a major contributor to cardiac remodeling after stress. This process is critically joined by and regulated through the mitochondrial danger signal adapter MAVS. This novel complex coordinates remodeling, inflammatory response, and mitochondrial energy metabolism in stressed cardiomyocytes. Thus, Nod1/RIP2/MAVS signaling complex may represent an attractive new therapeutic approach toward heart failure.
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Affiliation(s)
- Han-Bin Lin
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Kotaro Naito
- Cardiology, Keiyu Hospital, Yokohama, Japan (K.N.).,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Yena Oh
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Gedaliah Farber
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Georges Kanaan
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine (G.K., B.R., M.-E.H.), University of Ottawa, Canada
| | - Alan Valaperti
- Department of Clinical Immunology of the University Hospital Zurich, Switzerland (A.V.).,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Fayez Dawood
- University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Liyong Zhang
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Guo Hua Li
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - David Smyth
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Mark Moon
- Department of Physiology, Institute of Medical Science (M.M., P.P.L.), University of Toronto, Canada.,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Youan Liu
- University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Wenbin Liang
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Benjamin Rotstein
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine (G.K., B.R., M.-E.H.), University of Ottawa, Canada
| | | | - Kyoung-Han Kim
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Mary-Ellen Harper
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine (G.K., B.R., M.-E.H.), University of Ottawa, Canada
| | - Peter P Liu
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada.,Department of Physiology, Institute of Medical Science (M.M., P.P.L.), University of Toronto, Canada.,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
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13
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Sekuła-Stryjewska M, Noga S, Dźwigońska M, Adamczyk E, Karnas E, Jagiełło J, Szkaradek A, Chytrosz P, Boruczkowski D, Madeja Z, Kotarba A, Lipińska L, Zuba-Surma EK. Graphene-based materials enhance cardiomyogenic and angiogenic differentiation capacity of human mesenchymal stem cells in vitro - Focus on cardiac tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111614. [PMID: 33321657 DOI: 10.1016/j.msec.2020.111614] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/28/2020] [Accepted: 10/05/2020] [Indexed: 12/22/2022]
Abstract
Cell-based therapies have recently emerged as promising strategies for the treatment of cardiovascular disease. Mesenchymal stem cells (MSCs) are a promising cell type that represent a class of adult stem cells characterized by multipotency, high proliferative capacity, paracrine activity, and low immunogenicity. To improve the functional and therapeutic efficacy of MSCs, novel biomaterials are considered as scaffolds/surfaces that promote MSCs growth and differentiation. One of them are graphene-based materials, including graphene oxide (GO) and reduced graphene oxide (rGO). Due to the unique physical, chemical, and biological properties of graphene, scaffolds comprising GO/rGO have been examined as novel platforms to improve the differentiation potential of human MSCs in vitro. We verified different i) size of GO flakes, ii) reduction level, and iii) layer thickness to select the most suitable artificial niche for MSCs culture. The results revealed that graphene-based substrates constitute non-toxic substrates for MSCs. Surfaces with large flakes of GO as well as low reduced rGO are the most biocompatible for MSCs propagation and do not affect their proliferation and survival. Interestingly, small GO flakes and highly reduced rGO decreased MSCs proliferation and induced their apoptosis. We also found that GO and rGO substrates did not alter the MSCs phenotype, cell cycle progression and might modulate the adhesive capabilities of these cells. Importantly, we demonstrated that both materials promoted the cardiomyogenic and angiogenic differentiation capacity of MSCs in vitro. Thus, our data indicates that graphene-based surfaces represent promising materials that may influence the therapeutic application of MSCs via supporting their pro-regenerative potential.
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Affiliation(s)
- Małgorzata Sekuła-Stryjewska
- Laboratory of Stem Cell Biotechnology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Sylwia Noga
- Laboratory of Stem Cell Biotechnology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland; Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Monika Dźwigońska
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Edyta Adamczyk
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Elżbieta Karnas
- Laboratory of Stem Cell Biotechnology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland; Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Joanna Jagiełło
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, Warsaw, Poland
| | - Agnieszka Szkaradek
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | | | | | - Zbigniew Madeja
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, Krakow, Poland
| | - Ludwika Lipińska
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, Warsaw, Poland
| | - Ewa K Zuba-Surma
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland.
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14
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Wu X, You W, Wu Z, Ye F, Chen S. Zinc finger protein 91 loss induces cardiac hypertrophy through adenosine A1 receptor down-regulation under pressure overload status. J Cell Mol Med 2020; 24:10189-10201. [PMID: 32677376 PMCID: PMC7520255 DOI: 10.1111/jcmm.15630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/15/2020] [Accepted: 06/23/2020] [Indexed: 01/22/2023] Open
Abstract
The function of zfp91 is mainly studied in vitro, but there is no study in vivo. Accumulative data suggest that zfp91 may be an important gene to regulate all aspects of human response. However, there are no data to date about the function of zfp91 on cardiac homeostasis. Thus, we aimed to observe the role of zfp91 gene in mouse cardiomyocytes on myocardial homeostasis and related mechanisms under pressure overload. In the study, zfp91 mRNA and protein levels were significantly reduced in TAC-operated WT mice as compared with controls. Genetic ablation of zfp91 dramatically led to pathological cardiac dysfunction and hypertrophy after transverse aortic constriction (TAC). Adenosine A1 receptor (Adora1) mRNA and protein expressions were significantly down-regulated in the heart of zfp91-deletion mice with TAC. Zfp91 overexpression reversed isoproterenol-induced cardiomyocyte hypertrophy, which was abolished by selective Adora1 antagonist. Dual-luciferase reporter and ChIP-qPCR assays indicated that zfp91 acted on Adora1 promoter through its binding site. Last, Adora1 agonist rescued heart dysfunction and cardiac hypertrophy in zfp91 loss mice after TAC. Zfp91 may transcriptionally regulate Adora1 expression in the heart, which mainly maintained cardiac homeostasis under pressure overload status. It will provide a new approach to treat cardiac hypertrophy.
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Affiliation(s)
- Xiangqi Wu
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Wei You
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zhiming Wu
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Fei Ye
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Shaoliang Chen
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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15
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GATA4-targeted compound exhibits cardioprotective actions against doxorubicin-induced toxicity in vitro and in vivo: establishment of a chronic cardiotoxicity model using human iPSC-derived cardiomyocytes. Arch Toxicol 2020; 94:2113-2130. [PMID: 32185414 PMCID: PMC7303099 DOI: 10.1007/s00204-020-02711-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 03/09/2020] [Indexed: 12/14/2022]
Abstract
Doxorubicin is a widely used anticancer drug that causes dose-related cardiotoxicity. The exact mechanisms of doxorubicin toxicity are still unclear, partly because most in vitro studies have evaluated the effects of short-term high-dose doxorubicin treatments. Here, we developed an in vitro model of long-term low-dose administration of doxorubicin utilizing human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs). Moreover, given that current strategies for prevention and management of doxorubicin-induced cardiotoxicity fail to prevent cancer patients developing heart failure, we also investigated whether the GATA4-targeted compound 3i-1000 has cardioprotective potential against doxorubicin toxicity both in vitro and in vivo. The final doxorubicin concentration used in the chronic toxicity model in vitro was chosen based on cell viability data evaluation. Exposure to doxorubicin at the concentrations of 1–3 µM markedly reduced (60%) hiPSC-CM viability already within 48 h, while a 14-day treatment with 100 nM doxorubicin concentration induced only a modest 26% reduction in hiPCS-CM viability. Doxorubicin treatment also decreased DNA content in hiPSC-CMs. Interestingly, the compound 3i-1000 attenuated doxorubicin-induced increase in pro-B-type natriuretic peptide (proBNP) expression and caspase-3/7 activation in hiPSC-CMs. Moreover, treatment with 3i-1000 for 2 weeks (30 mg/kg/day, i.p.) inhibited doxorubicin cardiotoxicity by restoring left ventricular ejection fraction and fractional shortening in chronic in vivo rat model. In conclusion, the results demonstrate that long-term exposure of hiPSC-CMs can be utilized as an in vitro model of delayed doxorubicin-induced toxicity and provide in vitro and in vivo evidence that targeting GATA4 may be an effective strategy to counteract doxorubicin-induced cardiotoxicity.
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16
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Jurado Acosta A, Rysä J, Szabo Z, Moilanen AM, Serpi R, Ruskoaho H. Phosphorylation of GATA4 at serine 105 is required for left ventricular remodelling process in angiotensin II-induced hypertension in rats. Basic Clin Pharmacol Toxicol 2020; 127:178-195. [PMID: 32060996 PMCID: PMC7496669 DOI: 10.1111/bcpt.13398] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/25/2022]
Abstract
In this study, we investigated whether local intramyocardial GATA4 overexpression affects the left ventricular (LV) remodelling process and the importance of phosphorylation at serine 105 (S105) for the actions of GATA4 in an angiotensin II (AngII)‐induced hypertension rat model. Adenoviral constructs overexpressing wild‐type GATA4 or GATA4 mutated at S105 were delivered into the anterior LV free wall. AngII (33.3 µg/kg/h) was administered via subcutaneously implanted minipumps. Cardiac function and structure were examined by echocardiography, followed by histological immunostainings of LV sections and gene expression measurements by RT‐qPCR. The effects of GATA4 on cultured neonatal rat ventricular fibroblasts were evaluated. In AngII‐induced hypertension, GATA4 overexpression repressed fibrotic gene expression, reversed the hypertrophic adult‐to‐foetal isoform switch of myofibrillar genes and prevented apoptosis, whereas histological fibrosis was not affected. Overexpression of GATA4 mutated at S105 resulted in LV chamber dilatation, cardiac dysfunction and had minor effects on expression of myocardial remodelling genes. Fibrotic gene expression in cardiac fibroblasts was differently affected by overexpression of wild‐type or mutated GATA4. Our results indicate that GATA4 reduces AngII‐induced responses by interfering with pro‐fibrotic and hypertrophic gene expressions. GATA4 actions on LV remodelling and fibroblasts are dependent on phosphorylation site S105.
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Affiliation(s)
- Alicia Jurado Acosta
- Pharmacology and Toxicology, Biomedicine Research Unit, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Jaana Rysä
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Zoltan Szabo
- Pharmacology and Toxicology, Biomedicine Research Unit, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Anne-Mari Moilanen
- Cancer and Translational Medicine Research Unit, University of Oulu, Oulu, Finland.,Oulu University Hospital and Medical Research Center Oulu, Oulu, Finland
| | - Raisa Serpi
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Oulu, Finland
| | - Heikki Ruskoaho
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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17
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RNA-seq Reveals Dysregulation of Novel Melanocyte Genes upon Oxidative Stress: Implications in Vitiligo Pathogenesis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2841814. [PMID: 31871544 PMCID: PMC6913168 DOI: 10.1155/2019/2841814] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 10/01/2019] [Indexed: 01/01/2023]
Abstract
Oxidative stress is known to induce melanocyte death, but the underlying mechanisms are incompletely understood. To identify oxidative stress-induced global gene expression changes in melanocytes, we treated PIG1 melanocytes with H2O2 in a dose- and time-dependent manner and performed RNA-seq. This approach allowed us to capture the events occurring early as well as late phase after treatment with H2O2. Our bioinformatics analysis identified differentially expressed genes involved in various biological processes of melanocytes which are known to contribute to the vitiligo development, such as apoptosis, autophagy, cell cycle regulation, cell adhesion, immune and inflammatory responses, melanocyte pluripotency, and developmental signaling such as WNT and NOTCH pathways. We uncovered several novel genes that are not previously described to be involved in melanocytic response to stress nor in vitiligo pathogenesis. Quantitative PCR and western blot analysis of selected proteins, performed on PIG1 and primary human epidermal melanocytes, confirmed the RNA-seq data. Interestingly, we discovered an aberrant regulation of several transcription factors that are involved in diabetes, neurological, and psychiatric diseases, all of which are comorbid conditions in patients with vitiligo. Our results may lead to a better understanding of the molecular mechanisms underlying vitiligo pathogenesis and help developing new drug targets for effective treatment.
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18
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Zlabinger K, Spannbauer A, Traxler D, Gugerell A, Lukovic D, Winkler J, Mester-Tonczar J, Podesser B, Gyöngyösi M. MiR-21, MiR-29a, GATA4, and MEF2c Expression Changes in Endothelin-1 and Angiotensin II Cardiac Hypertrophy Stimulated Isl-1 +Sca-1 +c-kit + Porcine Cardiac Progenitor Cells In Vitro. Cells 2019; 8:cells8111416. [PMID: 31717562 PMCID: PMC6912367 DOI: 10.3390/cells8111416] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 12/16/2022] Open
Abstract
Cost- and time-intensive porcine translational disease models offer great opportunities to test drugs and therapies for pathological cardiac hypertrophy and can be supported by porcine cell culture models that provide further insights into basic disease mechanisms. Cardiac progenitor cells (CPCs) residing in the adult heart have been shown to differentiate in vitro into cardiomyocytes and could contribute to cardiac regeneration. Therefore, it is important to evaluate their changes on the cellular level caused by disease. We successfully isolated Isl1+Sca1+cKit+ porcine CPCs (pCPCs) from pig hearts and stimulated them with endothelin-1 (ET-1) and angiotensin II (Ang II) in vitro. We also performed a cardiac reprogramming transfection and tested the same conditions. Our results show that undifferentiated Isl1+Sca1+cKit+ pCPCs were significantly upregulated in GATA4, MEF2c, and miR-29a gene expressions and in BNP and MCP-1 protein expressions with Ang II stimulation, but they showed no significant changes in miR-29a and MCP-1 when stimulated with ET-1. Differentiated Isl1+Sca1+cKit+ pCPCs exhibited significantly higher levels of MEF2c, GATA4, miR-29a, and miR-21 as well as Cx43 and BNP with Ang II stimulation. pMx-MGT-transfected Isl1+Sca1+cKit+ pCPCs showed significant elevations in MEF2c, GATA4, and BNP expressions when stimulated with ET-1. Our model demonstrates that in vitro stimulation leads to successful Isl1+Sca1+cKit+ pCPC hypertrophy with upregulation of cardiac remodeling associated genes and profibrotic miRNAs and offers great possibilities for further investigations of disease mechanisms and treatment.
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Affiliation(s)
- Katrin Zlabinger
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
- Correspondence: (K.Z.); (M.G.); Tel.: +43(0)-140-400-48520 (K.Z.)
| | - Andreas Spannbauer
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
| | - Denise Traxler
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
| | - Alfred Gugerell
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
| | - Dominika Lukovic
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
| | - Johannes Winkler
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
| | - Julia Mester-Tonczar
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
| | - Bruno Podesser
- Medical University of Vienna, Department of Biomedical Research, 1090 Vienna, Austria;
| | - Mariann Gyöngyösi
- Medical University of Vienna, Department of Cardiology, 1090 Vienna, Austria; (A.S.); (D.T.); (A.G.); (D.L.); (J.W.); (J.M.-T.)
- Correspondence: (K.Z.); (M.G.); Tel.: +43(0)-140-400-48520 (K.Z.)
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19
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He JG, Li HR, Li BB, Xie QL, Yan D, Wang XJ. Bone marrow mesenchymal stem cells overexpressing GATA-4 improve cardiac function following myocardial infarction. Perfusion 2019; 34:696-704. [PMID: 31090492 DOI: 10.1177/0267659119847442] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
INTRODUCTION The present study aimed to examine whether GATA-4 overexpressing bone marrow mesenchymal stem cells can improve cardiac function in a murine myocardial infarction model compared with bone marrow mesenchymal stem cells alone. METHODS A lentiviral-based transgenic system was used to generate bone mesenchymal stem cells which stably expressed GATA-4 (GATA-4-bone marrow mesenchymal stem cells). Apoptosis and the myogenic phenotype of the bone marrow mesenchymal stem cells were measured using Western blot and immunofluorescence assays co-cultured with cardiomyocytes. Cardiac function, bone marrow mesenchymal stem cell homing, cardiac cell apoptosis, and vessel number following transplantation were assessed, as well as the expression of c-Kit. RESULTS In GATA-4-bone marrow mesenchymal stem cells-cardiomyocyte co-cultures, expression of myocardial-specific antigens, cTnT, connexin-43, desmin, and α-actin was increased compared with bone marrow mesenchymal stem cells alone. Caspase 8 and cytochrome C expression was lower, and the apoptotic rate was significantly lower in GATA-4 bone marrow mesenchymal stem cells. Cardiac function following myocardial infarction was also increased in the GATA-4 bone marrow mesenchymal stem cell group as demonstrated by enhanced ejection fraction and left ventricular fractional shortening. Analysis of the cardiac tissue revealed that the GATA-4 bone marrow mesenchymal stem cell group had a greater number of DiR-positive cells suggestive of increased homing and/or survival. Transplantation with GATA-4-bone marrow mesenchymal stem cells significantly increased the number of blood vessels, decreased the proportion of apoptotic cells, and increased the mean number of cardiac c-kit-positive cells. CONCLUSION GATA-4 overexpression in bone marrow mesenchymal stem cells exerts anti-apoptotic effects by targeting cytochrome C and Fas pathways, promotes the aggregation of bone marrow mesenchymal stem cells in cardiac tissue, facilitates angiogenesis, and effectively mobilizes c-kit-positive cells following myocardial infarction, leading to the improvement of cardiac function after MI.
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Affiliation(s)
- Ji-Gang He
- Department of Cardiovascular Surgery, First People's Hospital of Yunnan Province, Kunming, China
| | - Hong-Rong Li
- Department of Cardiovascular Surgery, First People's Hospital of Yunnan Province, Kunming, China
| | - Bei-Bei Li
- Department of Cardiovascular Surgery, First People's Hospital of Yunnan Province, Kunming, China
| | - Qiao-Li Xie
- Department of Cardiovascular Surgery, First People's Hospital of Yunnan Province, Kunming, China
| | - Dan Yan
- Department of Emergency Intensive Care Unit, First People's Hospital of Yunnan Province, Kunming, China
| | - Xue-Juan Wang
- Department of Emergency Intensive Care Unit, First People's Hospital of Yunnan Province, Kunming, China
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20
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Inhibition of microRNA-429 attenuates oxygen-glucose deprivation/reoxygenation-induced neuronal injury by promoting expression of GATA-binding protein 4. Neuroreport 2019; 29:723-730. [PMID: 29624520 DOI: 10.1097/wnr.0000000000001023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
MicroRNAs (miRNAs) have been documented as critical regulators in ischemia/reperfusion-induced neuronal death. A better understanding of miRNA-mediated molecular mechanisms in ischemia/reperfusion-induced neuronal death may provide therapeutic targets for cerebral ischemia/reperfusion injury. A growing body of evidence suggests that miR-429 is a apoptosis-related miRNA that is also induced by hypoxia. However, whether miR-429 is involved in regulating neuronal apoptosis during cerebral ischemia/reperfusion injury remains unclear. In this study, the effect of miR-429 on oxygen-glucose deprivation and reoxygenation (OGD/R)-induced neuronal injury was investigated in vitro. The results showed that miR-429 expression levels were upregulated in cultured neurons with OGD/R treatment. The downregulation of miR-429 significantly alleviated OGD/R-induced neuronal injury, whereas upregulation of miR-429 aggravated it. Bioinformatic analysis showed that miR-429 could directly target the 3'-untranslated region of GATA-binding protein 4 (GATA4), which was verified by dual-luciferase reporter assay. Moreover, we found that miR-429 negatively regulated GATA4 expression. Overexpression of GATA4 also significantly alleviated OGD/R-induced neuronal injury. However, knockdown of GATA4 partially reversed the protective effect induced by miR-429 downregulation. Overall, our data showed that downregulation of miR-429 protected neurons against OGD/R-induced injury by promoting GATA4 and suggested a potential therapeutic target for the treatment of cerebral ischemia/reperfusion injury.
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21
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Jarrar YB, Jarrar Q, abed A, Abu-Shalhoob M. Effects of nonsteroidal anti-inflammatory drugs on the expression of arachidonic acid-metabolizing Cyp450 genes in mouse hearts, kidneys and livers. Prostaglandins Other Lipid Mediat 2019; 141:14-21. [DOI: 10.1016/j.prostaglandins.2019.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/31/2019] [Accepted: 02/05/2019] [Indexed: 02/04/2023]
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22
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Bergeron F, Boulende Sab A, Bouchard MF, Taniguchi H, Souchkova O, Brousseau C, Tremblay JJ, Pilon N, Viger RS. Phosphorylation of GATA4 serine 105 but not serine 261 is required for testosterone production in the male mouse. Andrology 2019; 7:357-372. [PMID: 30793514 DOI: 10.1111/andr.12601] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND GATA4 is a transcription factor essential for male sex determination, testicular differentiation during fetal development, and male fertility in the adult. GATA4 exerts part of its function by regulating multiple genes in the steroidogenic enzyme pathway. In spite of these crucial roles, how the activity of this factor is regulated remains unclear. OBJECTIVES Studies in gonadal cell lines have shown that GATA4 is phosphorylated on at least two serine residues-serine 105 (S105) and serine 261 (S261)-and that this phosphorylation is important for GATA4 activity. The objective of the present study is to characterize the endogenous role of GATA4 S105 and S261 phosphorylation in the mouse testis. MATERIALS AND METHODS We examined both previously described GATA4 S105A mice and a novel GATA4 S261A knock-in mouse that we generated by CRISPR/Cas9 gene editing. The male phenotype of the mutants was characterized by assessing androgen-dependent organ weights, hormonal profiles, and expression of multiple testicular target genes using standard biochemical and molecular biology techniques. RESULTS The fecundity of crosses between GATA4 S105A mice was reduced but without a change in sex ratio. The weight of androgen-dependent organs was smaller when compared to wild-type controls. Plasma testosterone levels showed a 70% decrease in adult GATA4 S105A males. This decrease was associated with a reduction in Cyp11a1, Cyp17a1, and Hsd17b3 expression. GATA4 S261A mice were viable and testis morphology appeared normal. Testosterone production and steroidogenic enzyme expression were not altered in GATA4 S261A males. DISCUSSION AND CONCLUSION Our analysis showed that blocking GATA4 S105 phosphorylation is associated with decreased androgen production in males. In contrast, S261 phosphorylation by itself is dispensable for GATA4 function. These results confirm that endogenous GATA4 action is essential for normal steroid production in males and that this activity requires phosphorylation on at least one serine residue.
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Affiliation(s)
- F Bergeron
- Reproduction, Mother and Child Health, Centre de Recherche du CHU de Québec-Université Laval, Quebec, QC, Canada.,Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Quebec, QC, Canada
| | - A Boulende Sab
- Département des Sciences Biologiques and Centre d'excellence en Recherche sur les Maladies Orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal (UQAM), Montreal, QC, Canada
| | - M F Bouchard
- Reproduction, Mother and Child Health, Centre de Recherche du CHU de Québec-Université Laval, Quebec, QC, Canada.,Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Quebec, QC, Canada
| | - H Taniguchi
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Jastrzebiec, Poland
| | - O Souchkova
- Département des Sciences Biologiques and Centre d'excellence en Recherche sur les Maladies Orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal (UQAM), Montreal, QC, Canada
| | - C Brousseau
- Reproduction, Mother and Child Health, Centre de Recherche du CHU de Québec-Université Laval, Quebec, QC, Canada.,Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Quebec, QC, Canada
| | - J J Tremblay
- Reproduction, Mother and Child Health, Centre de Recherche du CHU de Québec-Université Laval, Quebec, QC, Canada.,Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Quebec, QC, Canada.,Department of Obstetrics, Gynecology, and Reproduction, Université Laval, Quebec, QC, Canada
| | - N Pilon
- Département des Sciences Biologiques and Centre d'excellence en Recherche sur les Maladies Orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal (UQAM), Montreal, QC, Canada
| | - R S Viger
- Reproduction, Mother and Child Health, Centre de Recherche du CHU de Québec-Université Laval, Quebec, QC, Canada.,Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Quebec, QC, Canada.,Department of Obstetrics, Gynecology, and Reproduction, Université Laval, Quebec, QC, Canada
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23
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Gene Expression Profiling of NFATc1-Knockdown in RAW 264.7 Cells: An Alternative Pathway for Macrophage Differentiation. Cells 2019; 8:cells8020131. [PMID: 30736420 PMCID: PMC6406727 DOI: 10.3390/cells8020131] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/18/2019] [Accepted: 02/05/2019] [Indexed: 01/12/2023] Open
Abstract
NFATc1, which is ubiquitous in many cell types, is the master regulator of osteoclastogenesis. However, the molecular mechanisms by which NFATc1 drives its transcriptional program to produce osteoclasts from macrophages (M) remains poorly understood. We performed quantitative PCR (QPCR) arrays and bioinformatic analyses to discover new direct and indirect NFATc1 targets. The results revealed that NFATc1 significantly modified the expression of 55 genes in untransfected cells and 31 genes after NFATc1-knockdown (≥2). Among them, we focused on 19 common genes that showed changes in the PCR arrays between the two groups of cells. Gene Ontology (GO) demonstrated that genes related to cell differentiation and the development process were significantly (p > 0.05) affected by NFATc1-knockdown. Among all the genes analyzed, we focused on GATA2, which was up-regulated in NFATc1-knockdown cells, while its expression was reduced after NFATc1 rescue. Thus, we suggest GATA2 as a new target of NFATc1. Ingenuity Pathway Analysis (IPA) identified up-regulated GATA2 and the STAT family members as principal nodes involved in cell differentiation. Mechanistically, we demonstrated that STAT6 was activated in parallel with GATA2 in NFATc1-knockdown cells. We suggest an alternative pathway for macrophage differentiation in the absence of NFATc1 due to the GATA2 transcription factor.
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24
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Yi SW, Kim HJ, Oh HJ, Shin H, Lee JS, Park JS, Park KH. Gene expression profiling of chondrogenic differentiation by dexamethasone-conjugated polyethyleneimine with SOX trio genes in stem cells. Stem Cell Res Ther 2018; 9:341. [PMID: 30526665 PMCID: PMC6286596 DOI: 10.1186/s13287-018-0998-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 08/16/2018] [Accepted: 08/28/2018] [Indexed: 12/27/2022] Open
Abstract
Background During differentiation of stem cells, it is recognized that molecular mechanisms of transcription factors manage stem cells towards the intended lineage. In this study, using microarray-based technology, gene expression profiling was examined during the process of chondrogenic differentiation of human mesenchymal stem cells (hMSCs). To induce chondrogenic differentiation of hMSCs, the cationic polymer polyethyleneimine (PEI) was coupled with the synthetic glucocorticoid dexamethasone (DEX). DEX/PEI could be polyplexed with anionic plasmid DNAs (pDNAs) harboring the chondrogenesis-inducing factors SOX5, SOX6, and SOX9. These are named differentiation-inducing nanoparticles (DI-NPs). Methods A DI-NP system for inducing chondrogenic differentiation was designed and characterized by dynamic light scattering and scanning electron microscopy (SEM). Chondrogenic induction of hMSCs was evaluated using various tools such as reverse-transcription polymerase chain reaction (RT-PCR), Western blotting, confocal fluorescent microscopy, and immunohistochemistry analysis. The gene expression profiling of DI-NP-treated hMSCs was performed by microarray analysis. Results The hMSCs were more efficiently transfected with pDNAs using DI-NPs than using PEI. Moreover, microarray analysis demonstrated the gene expression profiling of hMSCs transfected with DI-NPs. Chondrogenic factors including SOX9, collagen type II (COLII), Aggrecan, and cartilage oligometric matrix protein (COMP) were upregulated while osteogenic factors including collagen type I (COLI) was downregulated. Chondrogenesis-induced hMSCs were better differentiated as assessed by RT-PCR, Western blotting analyses, and immunohistochemistry. Conclusion DI-NPs are good gene delivery carriers and induce chondrogenic differentiation of hMSCs. Additionally, comprehensive examination of the gene expression was attempted to identify specific genes related to differentiation by microarray analysis. Graphical abstract ![]()
Electronic supplementary material The online version of this article (10.1186/s13287-018-0998-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Se Won Yi
- Department of Nano-regenerative Medical Engineering, College of Life Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Hye Jin Kim
- Department of Nano-regenerative Medical Engineering, College of Life Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Hyun Jyung Oh
- Department of Nano-regenerative Medical Engineering, College of Life Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Heejun Shin
- Department of Biotechnology, Catholic University 43-1, Yeokgok 2-dong, Wonmi-gu, Bucheon-si, Gyeonggi-do, 420-743, Republic of Korea
| | - Jung Sun Lee
- Department of Nano-regenerative Medical Engineering, College of Life Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Ji Sun Park
- Department of Nano-regenerative Medical Engineering, College of Life Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea.
| | - Keun-Hong Park
- Department of Nano-regenerative Medical Engineering, College of Life Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea.
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25
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Semantic Multi-Classifier Systems Identify Predictive Processes in Heart Failure Models across Species. Biomolecules 2018; 8:biom8040158. [PMID: 30486323 PMCID: PMC6315933 DOI: 10.3390/biom8040158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/21/2018] [Accepted: 11/21/2018] [Indexed: 11/29/2022] Open
Abstract
Genetic model organisms have the potential of removing blind spots from the underlying gene regulatory networks of human diseases. Allowing analyses under experimental conditions they complement the insights gained from observational data. An inevitable requirement for a successful trans-species transfer is an abstract but precise high-level characterization of experimental findings. In this work, we provide a large-scale analysis of seven weak contractility/heart failure genotypes of the model organism zebrafish which all share a weak contractility phenotype. In supervised classification experiments, we screen for discriminative patterns that distinguish between observable phenotypes (homozygous mutant individuals) as well as wild-type (homozygous wild-types) and carriers (heterozygous individuals). As the method of choice we use semantic multi-classifier systems, a knowledge-based approach which constructs hypotheses from a predefined vocabulary of high-level terms (e.g., Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways or Gene Ontology (GO) terms). Evaluating these models leads to a compact description of the underlying processes and guides the screening for new molecular markers of heart failure. Furthermore, we were able to independently corroborate the identified processes in Wistar rats.
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26
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Li T, He Z, Zhang X, Tian M, Jiang K, Cheng G, Wang Y. The status of MAPK cascades contributes to the induction and activation of Gata4 and Nkx2.5 during the stepwise process of cardiac differentiation. Cell Signal 2018; 54:17-26. [PMID: 30471465 DOI: 10.1016/j.cellsig.2018.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 12/28/2022]
Abstract
Cardiac differentiation in vitro is a complex, stepwise process that is rigidly governed by a subset of transcription factors and signaling cascades. In this study, we investigated the cooperation of cardiac-specific transcription factors Gata4 and Nkx2.5, as well as mitogen-activated protein kinase (MAPK) cascades. P19 embryonic carcinoma cells were induced into spontaneously beating cardiomyocytes utilizing a two-step protocol that comprised an early stage and a late stage of differentiation. During early-stage differentiation in suspension culture, P19 cells aggregated to form embryoid bodies (EBs), and the Gata4 and Nkx2.5 genes were induced. However, Gata4 expressed at the early stage of differentiation was incapable of activating downstream gene expression, as it was localized in the cytoplasm and prone to degradation. After EBs were plated for late-stage differentiation in adherent culture, the MAPK cascades were highly activated and contributed to the activation of Gata4 and Nkx2.5. Specifically, we revealed that p38 signaling participated in regulating the localization and stabilization of Gata4 and Nkx2.5. Additionally, the JNK cascade regulated late-stage cardiac differentiation; JNK kinase reduced Gata4 stabilization and conversely alleviated Nkx2.5 degradation by direct interaction and phosphorylation of Nkx2.5. Finally, we found that the C-terminal domain of Nkx2.5 was required for its stabilization under conditions of oxidative stress and JNK activation. Overall, our results indicated that the induction and activation of Gata4 and Nkx2.5 during early- and late-stage cardiac differentiation was closely associated with the function of the MAPK signaling cascades.
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Affiliation(s)
- Tao Li
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Zezhao He
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xia Zhang
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China
| | - Mei Tian
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China
| | - Kesheng Jiang
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Guanchang Cheng
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng, Henan 475000, China
| | - Yunlong Wang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China.
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27
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Coffman LG, Pearson AT, Frisbie LG, Freeman Z, Christie E, Bowtell DD, Buckanovich RJ. Ovarian Carcinoma-Associated Mesenchymal Stem Cells Arise from Tissue-Specific Normal Stroma. Stem Cells 2018; 37:257-269. [PMID: 30353617 PMCID: PMC6392140 DOI: 10.1002/stem.2932] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 09/14/2018] [Accepted: 09/22/2018] [Indexed: 02/02/2023]
Abstract
Carcinoma-associated mesenchymal stem cells (CA-MSCs) are critical stromal progenitor cells within the tumor microenvironment (TME). We previously demonstrated that CA-MSCs differentially express bone morphogenetic protein family members, promote tumor cell growth, increase cancer "stemness," and chemotherapy resistance. Here, we use RNA sequencing of normal omental MSCs and ovarian CA-MSCs to demonstrate global changes in CA-MSC gene expression. Using these expression profiles, we create a unique predictive algorithm to classify CA-MSCs. Our classifier accurately distinguishes normal omental, ovary, and bone marrow MSCs from ovarian cancer CA-MSCs. Suggesting broad applicability, the model correctly classifies pancreatic and endometrial cancer CA-MSCs and distinguishes cancer associated fibroblasts from CA-MSCs. Using this classifier, we definitively demonstrate ovarian CA-MSCs arise from tumor mediated reprograming of local tissue MSCs. Although cancer cells alone cannot induce a CA-MSC phenotype, the in vivo ovarian TME can reprogram omental or ovary MSCs to protumorigenic CA-MSCs (classifier score of >0.96). In vitro studies suggest that both tumor secreted factors and hypoxia are critical to induce the CA-MSC phenotype. Interestingly, although the breast cancer TME can reprogram bone marrow MSCs into CA-MSCs, the ovarian TME cannot, demonstrating for the first time that tumor mediated CA-MSC conversion is tissue and cancer type dependent. Together these findings (a) provide a critical tool to define CA-MSCs and (b) highlight cancer cell influence on distinct normal tissues providing powerful insights into the mechanisms underlying cancer specific metastatic niche formation. Stem Cells 2019;37:257-269.
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Affiliation(s)
- Lan G Coffman
- Division of Hematology Oncology, Department of Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Alexander T Pearson
- Division of Hematology Oncology, Department of Internal Medicine, University of Chicago, Illinois, USA
| | - Leonard G Frisbie
- Division of Hematology Oncology, Department of Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Zachary Freeman
- Unit for Laboratory Animal Medicine, Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Elizabeth Christie
- Research Division Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
| | - David D Bowtell
- Research Division Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
| | - Ronald J Buckanovich
- Division of Hematology Oncology, Department of Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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28
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Zhou Y, Chang H, Yang B. GATA4 is upregulated in nasopharyngeal cancer and facilitates epithelial-mesenchymal transition and metastasis through regulation of SLUG. Exp Ther Med 2018; 16:5318-5326. [PMID: 30542490 DOI: 10.3892/etm.2018.6826] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/29/2018] [Indexed: 12/21/2022] Open
Abstract
GATA4, a member of the GATA family, serves a key function in several types of cancer, including hepatoblastoma, gastric cancer and breast cancer. However, the function of GATA4 in nasopharyngeal cancer (NPC) is largely unknown. The present study revealed that GATA4 was upregulated in NPC tissue samples and the NPC cell line, 5-8F. Furthermore, the expression of GATA4 was associated with tumor size, metastasis and poor prognosis. Transwell invasion and wound healing analyses demonstrated that GATA4 promoted cell invasion and migration, respectively. Western blotting and reverse transcription-quantitative polymerase chain reaction revealed that GATA4 overexpression decreased the expression of epithelial markers and increased the expression of mesenchymal markers. By contrast, GATA4 inhibition increased the expression of epithelial markers and decreased the mesenchymal markers. Additionally, chromatin immunoprecipitation and dual-luciferase reporter assays revealed that GATA4 promoted epithelial-mesenchymal transition through transcriptionally activating SLUG. Cell counting kit-8 and colony formation assays were performed to analyze the effect of GATA4 on cell proliferation. The results indicated that GATA4 facilitated cell proliferation in NPC. In conclusion, GATA4 acts as an oncogene and serves crucial roles in NPC and GATA4 may find a potential application as therapeutic option in NPC.
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Affiliation(s)
- Yibin Zhou
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, P.R. China
| | - Huiyu Chang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, P.R. China
| | - Beibei Yang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, P.R. China
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29
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Dixit R, Narasimhan C, Balekundri VI, Agrawal D, Kumar A, Mohapatra B. Functionally significant, novel GATA4
variants are frequently associated with Tetralogy of Fallot. Hum Mutat 2018; 39:1957-1972. [DOI: 10.1002/humu.23620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 08/13/2018] [Accepted: 08/20/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Ritu Dixit
- Cytogenetics Laboratory; Department of Zoology; Banaras Hindu University; Varanasi Uttar Pradesh India
| | - Chitra Narasimhan
- Department of Pediatric Cardiology; Sri Jayadeva Institute of Cardiovascular Sciences and Research; Bengaluru Karnataka India
| | - Vijyalakshmi I. Balekundri
- Super Speciality Hospital; Prime Minister Swasth Suraksha Yojana (PMSSY); Bengaluru Medical College and Research Institute; Bengaluru Karnataka India
| | - Damyanti Agrawal
- Department of Cardio-vascular and Thoracic Surgery; Institute of Medical Science; Banaras Hindu University; Varanasi Uttar Pradesh India
| | - Ashok Kumar
- Department of Pediatrics; Institute of Medical Sciences; Banaras Hindu University; Varanasi Uttar Pradesh India
| | - Bhagyalaxmi Mohapatra
- Cytogenetics Laboratory; Department of Zoology; Banaras Hindu University; Varanasi Uttar Pradesh India
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30
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Stepniewski J, Pacholczak T, Skrzypczyk A, Ciesla M, Szade A, Szade K, Bidanel R, Langrzyk A, Grochowski R, Vandermeeren F, Kachamakova-Trojanowska N, Jez M, Drabik G, Nakanishi M, Jozkowicz A, Dulak J. Heme oxygenase-1 affects generation and spontaneous cardiac differentiation of induced pluripotent stem cells. IUBMB Life 2018; 70:129-142. [DOI: 10.1002/iub.1711] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 12/20/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Jacek Stepniewski
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Tomasz Pacholczak
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Aniela Skrzypczyk
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Maciej Ciesla
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Agata Szade
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Krzysztof Szade
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Romain Bidanel
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | | | - Radoslaw Grochowski
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Felix Vandermeeren
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Neli Kachamakova-Trojanowska
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Mateusz Jez
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Grazyna Drabik
- Pathology Department; University Children's Hospital of Cracow; Krakow Poland
| | - Mahito Nakanishi
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Ibaraki Japan
| | - Alicja Jozkowicz
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
| | - Jozef Dulak
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology; Jagiellonian University; Krakow Poland
- Kardio-Med Silesia; Zabrze Poland
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Jan MI, Khan RA, Ali T, Bilal M, Bo L, Sajid A, Malik A, Urehman N, Waseem N, Nawab J, Ali M, Majeed A, Ahmad H, Aslam S, Hamera S, Sultan A, Anees M, Javed Q, Murtaza I. Interplay of mitochondria apoptosis regulatory factors and microRNAs in valvular heart disease. Arch Biochem Biophys 2017; 633:50-57. [DOI: 10.1016/j.abb.2017.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 12/31/2022]
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McLaughlin D, Zhao Y, O'Neill KM, Edgar KS, Dunne PD, Kearney AM, Grieve DJ, McDermott BJ. Signalling mechanisms underlying doxorubicin and Nox2 NADPH oxidase-induced cardiomyopathy: involvement of mitofusin-2. Br J Pharmacol 2017; 174:3677-3695. [PMID: 28261787 PMCID: PMC5647180 DOI: 10.1111/bph.13773] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE The anthracycline doxorubicin (DOX), although successful as a first-line cancer treatment, induces cardiotoxicity linked with increased production of myocardial ROS, with Nox2 NADPH oxidase-derived superoxide reported to play a key role. The aim of this study was to identify novel mechanisms underlying development of cardiac remodelling/dysfunction further to DOX-stimulated Nox2 activation. EXPERIMENTAL APPROACH Nox2-/- and wild-type (WT) littermate mice were administered DOX (12 mg·kg-1 over 3 weeks) prior to study at 4 weeks. Detailed mechanisms were investigated in murine HL-1 cardiomyocytes, employing a robust model of oxidative stress, gene silencing and pharmacological tools. KEY RESULTS DOX-induced cardiac dysfunction, cardiomyocyte remodelling, superoxide production and apoptosis in WT mice were attenuated in Nox2-/- mice. Transcriptional analysis of left ventricular tissue identified 152 differentially regulated genes (using adjusted P < 0.1) in DOX-treated Nox2-/- versus WT mice, and network analysis highlighted 'Cell death and survival' as the biological function most significant to the dataset. The mitochondrial membrane protein, mitofusin-2 (Mfn2), appeared as a strong candidate, with increased expression (1.5-fold), confirmed by qPCR (1.3-fold), matching clear published evidence of promotion of cardiomyocyte cell death. In HL-1 cardiomyocytes, targeted siRNA knockdown of Nox2 decreased Mfn2 protein expression, but not vice versa. While inhibition of Nox2 activity along with DOX treatment attenuated its apoptotic and cytotoxic effects, reduced apoptosis after Mfn2 silencing reflected a sustained cytotoxic response and reduced cell viability. CONCLUSIONS AND IMPLICATIONS DOX-induced and Nox2-mediated up-regulation of Mfn2, rather than contributing to cardiomyocyte dysfunction through apoptotic pathways, appears to promote a protective mechanism. LINKED ARTICLES This article is part of a themed section on New Insights into Cardiotoxicity Caused by Chemotherapeutic Agents. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.21/issuetoc.
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Affiliation(s)
- Declan McLaughlin
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Youyou Zhao
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Karla M O'Neill
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Kevin S Edgar
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Philip D Dunne
- Centre for Cancer Research and Cell BiologyQueen's University BelfastBelfastUK
| | - Anna M Kearney
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - David J Grieve
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Barbara J McDermott
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
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Cesselli D, Aleksova A, Sponga S, Cervellin C, Di Loreto C, Tell G, Beltrami AP. Cardiac Cell Senescence and Redox Signaling. Front Cardiovasc Med 2017; 4:38. [PMID: 28612009 PMCID: PMC5447053 DOI: 10.3389/fcvm.2017.00038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 05/10/2017] [Indexed: 12/12/2022] Open
Abstract
Aging is characterized by a progressive loss of the ability of the organism to cope with stressors and to repair tissue damage. As a result, chronic diseases, including cardiovascular disease, increase their prevalence with aging, underlining the existence of common mechanisms that lead to frailty and age-related diseases. In this frame, the progressive decline of the homeostatic and reparative function of primitive cells has been hypothesized to play a major role in the evolution of cardiac pathology to heart failure. Although initially it was believed that reactive oxygen species (ROS) were produced in an unregulated manner as a byproduct of cellular metabolism, causing macromolecular damage and aging, accumulating evidence indicate the major role played by redox signaling in physiology. Aim of this review is to critically revise evidence linking ROS to cell senescence and aging and to provide evidence of the primary role played by redox signaling, with a particular emphasis on the multifunctional protein APE1/Ref in stem cell biology. Finally, we will discuss evidence supporting the role of redox signaling in cardiovascular cells.
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Affiliation(s)
| | - Aneta Aleksova
- Cardiovascular Department, Azienda Sanitaria Universitaria Integrata di Trieste, University of Trieste, Trieste, Italy
| | - Sandro Sponga
- Cardiothoracic Surgery, Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
| | | | | | - Gianluca Tell
- Department of Medicine, University of Udine, Udine, Italy
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Bana N, Sanooghi D, Soleimani M, Hayati Roodbari N, Alavi Moghaddam S, Joghataei MT, Sayahpour FA, Faghihi F. A Comparative Study to Evaluate Myogenic Differentiation Potential of Human Chorion versus Umbilical Cord Blood-derived Mesenchymal Stem Cells. Tissue Cell 2017; 49:495-502. [PMID: 28601197 DOI: 10.1016/j.tice.2017.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 05/01/2017] [Accepted: 05/10/2017] [Indexed: 01/11/2023]
Abstract
OBJECTIVE Musculodegenerative diseases threaten the life of many patients in the world. Since drug administration is not efficient in regeneration of damaged tissues, stem cell therapy is considered as a good strategy to restore the lost cells. Since the efficiency of myogenic differentiation potential of human Chorion- derived Mesenchymal Stem Cells (C-MSCs) has not been addressed so far; we set out to evaluate myogenic differentiation property of these cells in comparison with Umbilical Cord Blood- derived Mesenchymal Stem Cells (UCB-MSCs) in the presence of 5-azacytidine. MATERIALS & METHODS To do that, neonate placenta Umbilical Cord Blood were transferred to the lab. After characterization of the isolated cells using flowcytometry and multilineage differentiation capacity, the obtained Mesenchymal Stem Cells were cultured in DMEM/F12 supplemented with 2% FBS and 10μM of 5-azacytidine to induce myogenic differentiation. Real-time PCR and immunocytochemistry were used to assess the myogenic properties of the cells. RESULTS Our data showed that C-MSCs and UCB-MSCs were spindle shape in morphology. They were positive for CD90, CD73 and CD44 antigens, and negative for hematopoietic markers. They also differentiated into osteoblast and adipoblast lineages. Real-time PCR results showed that the cells could express MyoD, desmin and α-MHC at the end of the first week (P<0.05). No significant upregulation was detected in the expression of GATA-4 in both groups. Immunocytochemical staining revealed the expression of Desmin, cTnT and α-MHC. CONCLUSIONS Results showed that these cells are potent to differentiate into myoblast- like cells. An upregulation in the expression of some myogenic markers (desmin, α- MHC) was observed in C-MSCs in comparison with UCB-MSCs.
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Affiliation(s)
- Nikoo Bana
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Davood Sanooghi
- Department of Genetics, Faculty of Biological Sciences, Shahid Beheshti University, Tehran, Iran
| | - Mansoureh Soleimani
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Nasim Hayati Roodbari
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Mohammad Taghi Joghataei
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Neuroscience, School of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Forough Azam Sayahpour
- Department of Stem Cells and Developmental Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Faezeh Faghihi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
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Chen Z, Zhang S, Guo C, Li J, Sang W. Downregulation of miR-200c protects cardiomyocytes from hypoxia-induced apoptosis by targeting GATA-4. Int J Mol Med 2017; 39:1589-1596. [PMID: 28440427 DOI: 10.3892/ijmm.2017.2959] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/22/2017] [Indexed: 11/05/2022] Open
Abstract
Hypoxia-induced cardiomyocyte apoptosis plays an important role in the development of ischemic heart disease. MicroRNAs (miRNAs or miRs) are emerging as critical regulators of hypoxia-induced cardiomyocyte apoptosis. miR-200c is an miRNA that has been reported to be related to apoptosis in various pathological processes; however, its role in hypoxia‑induced cardiomyocyte apoptosis remains unclear. In the present study, we aimed to investigate the potential role and underlying mechanism of miR-200c in regulating hypoxia‑induced cardiomyocyte apoptosis. We found that miR-200c was significantly upregulated by hypoxia in cardiomyocytes, as detected by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The lactate dehydrogenase, MTT, Annexin V/propidium iodide apoptosis and caspase-3 activity assays showed that downregulation of miR-200c markedly improved cell survival and suppressed the apoptosis of cardiomyocytes in response to hypoxia. Bioinformatics analysis and the dual-luciferase reporter assay demonstrated that miR-200c directly targeted the 3'-untranslated region of GATA-4, an important transcription factor for cardiomyocyte survival. RT-qPCR and western blot analysis showed that suppression of miR-200c significantly increased GATA-4 expression. Furthermore, downregulation of miR-200c upregulated the expression of the anti-apoptotic gene Bcl-2. However, the protective effects against hypoxia induced by the downregulation of miR‑200c were significantly abolished by GATA-4 knockdown. Taken together, our results suggest that downregulation of miR-200c protects cardiomyocytes from hypoxia-induced apoptosis by targeting GATA-4, providing a potential therapeutic molecular target for the treatment of ischemic heart disease.
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Affiliation(s)
- Zhigang Chen
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Shaoli Zhang
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Changlei Guo
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Jianhua Li
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Wenfeng Sang
- Department of Internal Medicine Nursing, College of Nursing, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
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Yang S, Yuan Q, Niu M, Hou J, Zhu Z, Sun M, Li Z, He Z. BMP4 promotes mouse iPS cell differentiation to male germ cells via Smad1/5, Gata4, Id1 and Id2. Reproduction 2016; 153:211-220. [PMID: 27864336 DOI: 10.1530/rep-16-0292] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 10/27/2016] [Accepted: 11/18/2016] [Indexed: 12/13/2022]
Abstract
Generation of male germ cells from pluripotent cells could provide male gametes for treating male infertility and offer an ideal model for unveiling molecular mechanisms of spermatogenesis. However, the influence and exact molecular mechanisms, especially downstream effectors of BMP4 signaling pathways, in male germ cell differentiation of the induce pluripotent stem (iPS) cells, remain unknown. This study was designed to explore the role and mechanism of BMP4 signaling in the differentiation of mouse iPS cells to male germ cells. Embryoid body (EB) formation and recombinant BMP4 or Noggin were utilized to evaluate the effect of BMP4 on male germ cell generation from mouse iPS cells. Germ cell-specific genes and proteins as well as the downstream effectors of BMP4 signaling pathway were assessed using real-time PCR and Western blots. We found that BMP4 ligand and its multiple receptors, including BMPR1a, BMPR1b and BMPR2, were expressed in mouse iPS cells. Real-time PCR and Western blots revealed that BMP4 could upregulate the levels of genes and proteins for germ cell markers in iPS cells-derived EBs, whereas Noggin decreased their expression in these cells. Moreover, Smad1/5 phosphorylation, Gata4 transcription and the transcripts of Id1 and Id2 were enhanced by BMP4 but decreased when exposed to Noggin. Collectively, these results suggest that BMP4 promotes the generation of male germ cells from iPS cells via Smad1/5 pathway and the activation of Gata4, Id1 and Id2 This study thus offers novel insights into molecular mechanisms underlying male germ cell development.
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Affiliation(s)
| | - Qingqing Yuan
- State Key Laboratory of Oncogenes and Related GenesRenji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Human Sperm Bank, Shanghai, China
| | - Minghui Niu
- State Key Laboratory of Oncogenes and Related GenesRenji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Human Sperm Bank, Shanghai, China
| | - Jingmei Hou
- State Key Laboratory of Oncogenes and Related GenesRenji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Human Sperm Bank, Shanghai, China
| | - Zijue Zhu
- Department of AndrologyUrologic Medical Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Min Sun
- State Key Laboratory of Oncogenes and Related GenesRenji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Human Sperm Bank, Shanghai, China
| | - Zheng Li
- Department of AndrologyUrologic Medical Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zuping He
- State Key Laboratory of Oncogenes and Related GenesRenji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Human Sperm Bank, Shanghai, China .,Department of UrologyRen Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Andrology, Shanghai, China.,Shanghai Key Laboratory of Assisted Reproduction and Reproductive GeneticsShanghai, China.,Shanghai Key Laboratory of Reproductive MedicineShanghai, China
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Liang W, Guo J, Li J, Bai C, Dong Y. Downregulation of miR-122 attenuates hypoxia/reoxygenation (H/R)-induced myocardial cell apoptosis by upregulating GATA-4. Biochem Biophys Res Commun 2016; 478:1416-22. [PMID: 27569279 DOI: 10.1016/j.bbrc.2016.08.139] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 08/24/2016] [Indexed: 01/28/2023]
Abstract
MicroRNA-122 has been reported to play a potential role in the apoptosis of myocardial cells. However, the effect of miR-122 in regulating myocardial ischemic injury has not been previously addressed. This study aimed to investigate the effect and the molecular basis of miR-122 on myocardial ischemic injury. Using the hypoxia/reoxygenation (H/R) model of rat cardiomyocytes H9C2 in vitro, we found that miR-122 was highly expressed in H9C2 cells after H/R treatment. Overexpression of miR-122 by recombinant adeno-associated viral vector infection markedly promoted the apoptosis of H9C2 cells induced by H/R treatment, whereas miR-122 inhibition significantly decreased cell apoptosis. Dual-luciferase reporter assay and western blot assay revealed that GATA-4 was a direct target gene of miR-122, and miR-122 suppressed the expression of GATA-4 via binding to its 3'-UTR. We further identified that overexpression of miR-122 inhibited the expression of GATA-4 at the mRNA and protein levels, whereas the inhibition of miR-122 upregulated the expression of GATA-4. Moreover, GATA-4 was poorly expressed in H/R H9C2 cells and the apoptosis induced by H/R was associated with the decrease in GATA-4 expression. Importantly, silencing of GATA-4 apparently abrogated the inhibitory effect of anti-miR-122 on H/R-induced cell apoptosis. In conclusion, these findings indicate that downregulation of miR-122 alleviates cardiomyocyte H/R injury through upregulation of GATA-4 expression, supplying a novel molecular target for myocardial ischemic injury.
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Affiliation(s)
- Wanqian Liang
- The Third Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453100, China.
| | - Junxia Guo
- The Second Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453100, China
| | - Jianhua Li
- The Third Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453100, China
| | - Caiyan Bai
- The Third Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453100, China
| | - Yuan Dong
- Neonatal Intensive Care Unit, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453100, China
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Flores NM, Oviedo NJ, Sage J. Essential role for the planarian intestinal GATA transcription factor in stem cells and regeneration. Dev Biol 2016; 418:179-188. [PMID: 27542689 PMCID: PMC5055475 DOI: 10.1016/j.ydbio.2016.08.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 08/10/2016] [Accepted: 08/13/2016] [Indexed: 12/14/2022]
Abstract
The cellular turnover of adult tissues and injury-induced repair proceed through an exquisite integration of proliferation, differentiation, and survival signals that involve stem/progenitor cell populations, their progeny, and differentiated tissues. GATA factors are DNA binding proteins that control stem cells and the development of tissues by activating or repressing transcription. Here we examined the role of GATA transcription factors in Schmidtea mediterranea, a freshwater planarian that provides an excellent model to investigate gene function in adult stem cells, regeneration, and differentiation. Smed-gata4/5/6, the homolog of the three mammalian GATA-4,-5,-6 factors is expressed at high levels in differentiated gut cells but also at lower levels in neoblast populations, the planarian stem cells. Smed-gata4/5/6 knock-down results in broad differentiation defects, especially in response to injury. These defects are not restricted to the intestinal lineage. In particular, at late time points during the response to injury, loss of Smed-gata4/5/6 leads to decreased neoblast proliferation and to gene expression changes in several neoblast subpopulations. Thus, Smed-gata4/5/6 plays a key evolutionary conserved role in intestinal differentiation in planarians. These data further support a model in which defects in the intestinal lineage can indirectly affect other differentiation pathways in planarians.
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Affiliation(s)
- Natasha M Flores
- Department of Pediatrics, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Néstor J Oviedo
- Department of Molecular Cell Biology, School of Natural Sciences, Health Sciences Research Institute, University of California at Merced, 5200 North Lake Road, Merced, CA 95343, USA
| | - Julien Sage
- Department of Pediatrics, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
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Stem cells and injectable hydrogels: Synergistic therapeutics in myocardial repair. Biotechnol Adv 2016; 34:362-379. [PMID: 26976812 DOI: 10.1016/j.biotechadv.2016.03.003] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 02/27/2016] [Accepted: 03/07/2016] [Indexed: 02/08/2023]
Abstract
One of the major problems in the treatment of cardiovascular diseases is the inability of myocardium to self-regenerate. Current therapies are unable to restore the heart's function after myocardial infarction. Myocardial tissue engineering is potentially a key approach to regenerate damaged heart muscle. Myocardial patches are applied surgically, whereas injectable hydrogels provide effective minimally invasive approaches to recover functional myocardium. These hydrogels are easily administered and can be either cell free or loaded with bioactive agents and/or cardiac stem cells, which may apply paracrine effects. The aim of this review is to investigate the advantages and disadvantages of injectable stem cell-laden hydrogels and highlight their potential applications for myocardium repair.
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40
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Tao YF, Fang F, Hu SY, Lu J, Cao L, Zhao WL, Xiao PF, Li ZH, Wang NN, Xu LX, Du XJ, Sun LC, Li YH, Li YP, Xu YY, Ni J, Wang J, Feng X, Pan J. Hypermethylation of the GATA binding protein 4 (GATA4) promoter in Chinese pediatric acute myeloid leukemia. BMC Cancer 2015; 15:756. [PMID: 26490736 PMCID: PMC4618362 DOI: 10.1186/s12885-015-1760-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 10/09/2015] [Indexed: 12/12/2022] Open
Abstract
Background Acute myeloid leukemia (AML) is the second-most common form of leukemia in children. Aberrant DNA methylation patterns are a characteristic feature of AML. GATA4 has been suggested to be a tumor suppressor gene regulated by promoter hypermethylation in various types of human cancers although the expression and promoter methylation of GATA4 in pediatric AML is still unclear. Methods Transcriptional expression levels of GATA4 were evaluated by semi-quantitative and real-time PCR. Methylation status was investigated by methylation-specific PCR (MSP) and bisulfate genomic sequencing (BGS). The prognostic significance of GATA4 expression and promoter methylation was assessed in 105 cases of Chinese pediatric acute myeloid leukemia patients with clinical follow-up records. Results MSP and BGS analysis showed that the GATA4 gene promoter is hypermethylated in AML cells, such as the HL-60 and MV4-11 human myeloid leukemia cell lines. 5-Aza treatment significantly upregulated GATA4 expression in HL-60 and MV4-11 cells. Aberrant methylation of GATA4 was observed in 15.0 % (3/20) of the normal bone marrow control samples compared to 56.2 % (59/105) of the pediatric AML samples. GATA4 transcript levels were significantly decreased in AML patients (33.06 ± 70.94; P = 0.011) compared to normal bone marrow/idiopathic thrombocytopenic purpura controls (116.76 ± 105.39). GATA4 promoter methylation was correlated with patient leukocyte counts (WBC, white blood cells) (P = 0.035) and minimal residual disease MRD (P = 0.031). Kaplan-Meier survival analysis revealed significantly shorter overall survival time in patients with GATA4 promoter methylation (P = 0.014). Conclusions Epigenetic inactivation of GATA4 by promoter hypermethylation was observed in both AML cell lines and pediatric AML samples; our study implicates GATA4 as a putative tumor suppressor gene in pediatric AML. In addition, our findings imply that GATA4 promoter methylation is correlated with WBC and MRD. Kaplan-Meier survival analysis revealed significantly shorter overall survival in pediatric AML with GATA4 promoter methylation but multivariate analysis shows that it is not an independent factor. However, further research focusing on the mechanism of GATA4 in pediatric leukemia is required. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1760-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yan-Fang Tao
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Fang Fang
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Shao-Yan Hu
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Jun Lu
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Lan Cao
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Wen-Li Zhao
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Pei-Fang Xiao
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Zhi-Heng Li
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Na-Na Wang
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Li-Xiao Xu
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Xiao-Juan Du
- Department of Gastroenterology, the 5th Hospital of Chinese PLA, Yin chuan, China.
| | - Li-Chao Sun
- Department of Cell and Molecular Biology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
| | - Yan-Hong Li
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Yi-Ping Li
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Yun-Yun Xu
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Jian Ni
- Translational Research Center, Second Hospital, The Second Clinical School, Nanjing Medical University, Nanjing, China.
| | - Jian Wang
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Xing Feng
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
| | - Jian Pan
- Department of Hematology and Oncology, Childrens Hospital of Soochow University, Suzhou, China.
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Orphan Nuclear Receptor Nur77 Inhibits Cardiac Hypertrophic Response to Beta-Adrenergic Stimulation. Mol Cell Biol 2015. [PMID: 26195821 DOI: 10.1128/mcb.00229-15] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The orphan nuclear receptor Nur77 plays critical roles in cardiovascular diseases, and its expression is markedly induced in the heart after beta-adrenergic receptor (β-AR) activation. However, the functional significance of Nur77 in β-AR signaling in the heart remains unclear. By using Northern blot, Western blot, and immunofluorescent staining assays, we showed that Nur77 expression was markedly upregulated in cardiomyocytes in response to multiple hypertrophic stimuli, including isoproterenol (ISO), phenylephrine (PE), and endothelin-1 (ET-1). In a time- and dose-dependent manner, ISO increases Nur77 expression in the nuclei of cardiomyocytes. Overexpression of Nur77 markedly inhibited ISO-induced cardiac hypertrophy by inducing nuclear translocation of Nur77 in cardiomyocytes. Furthermore, cardiac overexpression of Nur77 by intramyocardial injection of Ad-Nur77 substantially inhibited cardiac hypertrophy and ameliorated cardiac dysfunction after chronic infusion of ISO in mice. Mechanistically, we demonstrated that Nur77 functionally interacts with NFATc3 and GATA4 and inhibits their transcriptional activities, which are critical for the development of cardiac hypertrophy. These results demonstrate for the first time that Nur77 is a novel negative regulator for the β-AR-induced cardiac hypertrophy through inhibiting the NFATc3 and GATA4 transcriptional pathways. Targeting Nur77 may represent a potentially novel therapeutic strategy for preventing cardiac hypertrophy and heart failure.
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Block DHS, Twumasi-Boateng K, Kang HS, Carlisle JA, Hanganu A, Lai TYJ, Shapira M. The Developmental Intestinal Regulator ELT-2 Controls p38-Dependent Immune Responses in Adult C. elegans. PLoS Genet 2015; 11:e1005265. [PMID: 26016853 PMCID: PMC4446034 DOI: 10.1371/journal.pgen.1005265] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 05/06/2015] [Indexed: 12/28/2022] Open
Abstract
GATA transcription factors play critical roles in cellular differentiation and development. However, their roles in mature tissues are less understood. In C. elegans larvae, the transcription factor ELT-2 regulates terminal differentiation of the intestine. It is also expressed in the adult intestine, where it was suggested to maintain intestinal structure and function, and where it was additionally shown to contribute to infection resistance. To study the function of elt-2 in adults we characterized elt-2-dependent gene expression following its knock-down specifically in adults. Microarray analysis identified two ELT-2-regulated gene subsets: one, enriched for hydrolytic enzymes, pointed at regulation of constitutive digestive functions as a dominant role of adult elt-2; the second was enriched for immune genes that are induced in response to Pseudomonas aeruginosa infection. Focusing on the latter, we used genetic analyses coupled to survival assays and quantitative RT-PCR to interrogate the mechanism(s) through which elt-2 contributes to immunity. We show that elt-2 controls p38-dependent gene induction, cooperating with two p38-activated transcription factors, ATF-7 and SKN-1. This demonstrates a mechanism through which the constitutively nuclear elt-2 can impact induced responses, and play a dominant role in C. elegans immunity.
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Affiliation(s)
- Dena H. S. Block
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
| | - Kwame Twumasi-Boateng
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
- Graduate Group in Microbiology, University of California Berkeley, Berkeley, California, United States of America
| | - Hae Sung Kang
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
| | - Jolie A. Carlisle
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
| | - Alexandru Hanganu
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
| | - Ty Yu-Jen Lai
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
| | - Michael Shapira
- Department of Integrative Biology, University of California, Berkeley, Berkeley, California, United States of America
- Graduate Group in Microbiology, University of California Berkeley, Berkeley, California, United States of America
- * E-mail:
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Na+/H+ exchanger isoform 1 induced cardiomyocyte hypertrophy involves activation of p90 ribosomal s6 kinase. PLoS One 2015; 10:e0122230. [PMID: 25830299 PMCID: PMC4382094 DOI: 10.1371/journal.pone.0122230] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 02/10/2015] [Indexed: 01/30/2023] Open
Abstract
Studies using pharmacological and genetic approaches have shown that increased activity/expression of the Na+/H+ exchanger isoform 1 (NHE1) play a critical role in the pathogenesis of cardiac hypertrophy. Despite the importance of NHE1 in cardiac hypertrophy, severe cerebrovascular side effects were associated with the use of NHE1 inhibitors when administered to patients with myocardial infarctions. p90 ribosomal S6 Kinase (RSK), a downstream regulator of the mitogen-activated protein kinase pathway, has also been implicated in cardiac hypertrophy. We hypothesized that RSK plays a role in the NHE1 induced cardiomyocyte hypertrophic response. Infection of H9c2 cardiomyoblasts with the active form of the NHE1 adenovirus induced hypertrophy and was associated with an increase in the phosphorylation of RSK (P<0.05). Parameters of hypertrophy such as cell area, protein content and atrial natriuretic mRNA expression were significantly reduced in H9c2 cardiomyoblasts infected with active NHE1 in the presence of dominant negative RSK (DN-RSK) (P<0.05). These results confirm that NHE1 lies upstream of RSK. Increased phosphorylation and activation of GATA4 at Ser261 was correlated with increased RSK phosphorylation. This increase was reversed upon inhibition of RSK or NHE1. These findings demonstrate for the first time that the NHE1 mediated hypertrophy is accounted for by increased activation and phosphorylation of RSK, which subsequently increased the phosphorylation of GATA4; eventually activating fetal gene transcriptional machinery.
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Stastna M, Van Eyk JE. Posttranslational modifications of lysine and evolving role in heart pathologies-recent developments. Proteomics 2015; 15:1164-80. [PMID: 25430483 DOI: 10.1002/pmic.201400312] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/29/2014] [Accepted: 11/24/2014] [Indexed: 02/06/2023]
Abstract
The alteration in proteome composition induced by environmental changes and various pathologies is accompanied by the modifications of proteins by specific cotranslational and PTMs. The type and site stoichiometry of PTMs can affect protein functions, alter cell signaling, and can have acute and chronic effects. The particular interest is drawn to those amino acid residues that can undergo several different PTMs. We hypothesize that these selected amino acid residues are biologically rare and act within the cell as molecular switches. There are, at least, 12 various lysine modifications currently known, several of them have been shown to be competitive and they influence the ability of a particular lysine to be modified by a different PTM. In this review, we discuss the PTMs that occur on lysine, specifically neddylation and sumoylation, and the proteomic approaches that can be applied for the identification and quantification of these PTMs. Of interest are the emerging roles for these modifications in heart disease and what can be inferred from work in other cell types and organs.
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Affiliation(s)
- Miroslava Stastna
- Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic, v. v. i, Brno, Czech Republic
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Cardiopathogenic mediators generated by GATA4 signaling upon co-activation with endothelin-1 and Trypanosoma cruzi infection. Microb Pathog 2014; 73:47-52. [DOI: 10.1016/j.micpath.2014.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 05/26/2014] [Accepted: 06/03/2014] [Indexed: 01/17/2023]
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Ikeda S, Satoh K, Kikuchi N, Miyata S, Suzuki K, Omura J, Shimizu T, Kobayashi K, Kobayashi K, Fukumoto Y, Sakata Y, Shimokawa H. Crucial role of rho-kinase in pressure overload-induced right ventricular hypertrophy and dysfunction in mice. Arterioscler Thromb Vasc Biol 2014; 34:1260-71. [PMID: 24675663 DOI: 10.1161/atvbaha.114.303320] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Right ventricular (RV) failure is the leading cause of death in various cardiopulmonary diseases, including pulmonary hypertension. It is generally considered that the RV is vulnerable to pressure overload as compared with the left ventricle (LV). However, as compared with LV failure, the molecular mechanisms of RV failure are poorly understood, and hence therapeutic targets of the disorder remain to be elucidated. Thus, we aimed to identify molecular therapeutic targets for RV failure in a mouse model of pressure overload. APPROACH AND RESULTS To induce pressure overload to respective ventricles, we performed pulmonary artery constriction or transverse aortic constriction in mice. We first performed microarray analysis and found that the molecules related to RhoA/Rho-kinase and integrin pathways were significantly upregulated in the RV with pulmonary artery constriction compared with the LV with transverse aortic constriction. Then, we examined the responses of both ventricles to chronic pressure overload in vivo. We demonstrated that compared with transverse aortic constriction, pulmonary artery constriction caused greater extents of mortality, Rho-kinase expression (especially ROCK2 isoform), and oxidative stress in pressure-overloaded RV, reflecting the weakness of the RV in response to pressure overload. Furthermore, mice with myocardial-specific overexpression of dominant-negative Rho-kinase showed resistance to pressure overload-induced hypertrophy and dysfunction associated with reduced oxidative stress. Finally, dominant-negative Rho-kinase mice showed a significantly improved long-term survival in both pulmonary artery constriction and transverse aortic constriction as compared with littermate controls. CONCLUSION These results indicate that the Rho-kinase pathway plays a crucial role in RV hypertrophy and dysfunction, suggesting that the pathway is a novel therapeutic target of RV failure in humans.
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Affiliation(s)
- Shohei Ikeda
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Kimio Satoh
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Nobuhiro Kikuchi
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Satoshi Miyata
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Kota Suzuki
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Junichi Omura
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Toru Shimizu
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Kenta Kobayashi
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Kazuto Kobayashi
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Yoshihiro Fukumoto
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Yasuhiko Sakata
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi)
| | - Hiroaki Shimokawa
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (S.I., K.S., N.K., S.M., K.S., J.O., T.S., Y.F., Y.S., H.S.); and Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan (Ke. Kobayashi, Ka. Kobayashi).
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Serizawa K, Yogo K, Tashiro Y, Aizawa K, Ishizuka N. GATA-4 transcription factor regulates cardiac COX-2 expression induced by nicorandil in left ventricle of rats. Pharmacology 2014; 93:129-36. [PMID: 24642889 DOI: 10.1159/000360008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 01/27/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND AIMS Cardioprotective effects induced by delayed ischemic preconditioning and by nicorandil are mediated via expression of cardioprotective factors such as COX-2. The present study was undertaken to evaluate whether nicorandil could induce COX-2 in rats and to elucidate its mode of induction pharmacologically. METHODS AND RESULTS Three hours after administration of nicorandil (10 mg/kg, p.o.), COX-2 mRNA and protein were significantly increased in the left ventricle, although other cardioprotective factors (Bcl-2, eNOS, hexokinase, HSP, and iNOS) were not increased. This COX-2 induction in the left ventricle was preceded by induction of GATA-4, which was significant from 1 h after administration. Ventricular levels of 6-keto-prostaglandin F1α were increased 6 h after administration. Although pinacidil or isosorbide dinitrate alone did not increase COX-2 mRNA, their combined application significantly increased COX-2 mRNA. Moreover, although glibenclamide or ODQ each partly inhibited the induction of COX-2 mRNA by nicorandil, their combined application significantly inhibited it. These results suggest that nicorandil induces COX-2 protein through both the activation of KATP channels and guanylate cyclase. CONCLUSION The present study demonstrated that nicorandil induces COX-2 via GATA-4 induction in the heart through both KATP channel activation and its nitrate-like properties.
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Affiliation(s)
- Kenichi Serizawa
- Product Research Department, Chugai Pharmaceutical Co., Ltd., Gotemba, Japan
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Hsieh YP, Huang CH, Lee CY, Lin CY, Chang CC. Silencing of hepcidin enforces the apoptosis in iron-induced human cardiomyocytes. J Occup Med Toxicol 2014; 9:11. [PMID: 24641804 PMCID: PMC3995429 DOI: 10.1186/1745-6673-9-11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 03/10/2014] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Iron is essential not only for erythropoisis but also for several bioenergetics' processes in myocardium. Hepcidin is a well-known regulator of iron homeostasis. Recently, researchers identified low hepcidin was independently associated with increased 3-year mortality among systolic heart failure patients. In addition, our previous in vivo study revealed that the left ventricular mass index increased in chronic kidney disease patients with lower serum hepcidin. We hypothesize that hepcidin interacts with the apoptotic pathway of cardiomyocytes during oxidative stress conditions. METHODS To test this hypothesis, human cardiomyocytes were cultured and treated with ferrous iron. The possible underlying signaling pathways of cardiotoxicity were examined following knockdown studies using siRNAs of hepcidin (siRNA1 was used as a negative control and siRNA2 was used to silence hepcidin). RESULTS We found that ferrous iron induces apoptosis in human cardiomyocytes in a dose-dependent manner. This iron-induced apoptosis was linked to enhanced caspase 8, reduced Bcl-2, Bcl-xL, phosphorylated Akt and GATA-4. Hepcidin levels increased in human cardiomyocytes pretreated with ferrous iron and returned to non-iron treated levels following siRNA2 transfection. In iron pretreated cardiomyocytes, the siRNA2 transfection further increased caspase 8 expression and decreased the expression of GATA-4, Bcl-2, Bcl-xL and phosphorylated Akt than iron pretreatment alone, but caspase 9 levels remained unchanged. CONCLUSIONS Our findings suggest that hepcidin can rescue human cardiomyocytes from iron-induced apoptosis through the regulation of GATA-4/Bcl-2 and the extrinsic apoptotic pathway.
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Affiliation(s)
- Yao-Peng Hsieh
- Division of Nephrology, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao St., Changhua 500, Taiwan.,Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan
| | - Ching-Hui Huang
- Division of Cardiology, Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Chia-Ying Lee
- Division of Pediatric Nephrology, China Medical University Hospital, Changhua, Taiwan
| | - Ching-Yuang Lin
- Clinical Immunological Center, China Medical University Hospital, No. 2, Yuh-Der Road, Taichung, Taiwan.,Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan.,Program for Aging, China Medical University, Taichung, Taiwan
| | - Chia-Chu Chang
- Division of Nephrology, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao St., Changhua 500, Taiwan.,Program for Aging, China Medical University, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
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Helmer RA, Martínez-Zaguilán R, Dertien JS, Fulford C, Foreman O, Peiris V, Chilton BS. Helicase-like transcription factor (Hltf) regulates G2/M transition, Wt1/Gata4/Hif-1a cardiac transcription networks, and collagen biogenesis. PLoS One 2013; 8:e80461. [PMID: 24278285 PMCID: PMC3835564 DOI: 10.1371/journal.pone.0080461] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 10/03/2013] [Indexed: 12/22/2022] Open
Abstract
HLTF/Hltf regulates transcription, remodels chromatin, and coordinates DNA damage repair. Hltf is expressed in mouse brain and heart during embryonic and postnatal development. Silencing Hltf is semilethal. Seventy-four percent of congenic C57BL/6J Hltf knockout mice died, 75% within 12-24 hours of birth. Previous studies in neonatal (6-8 hour postpartum) brain revealed silencing Hltf disrupted cell cycle progression, and attenuated DNA damage repair. An RNA-Seq snapshot of neonatal heart transcriptome showed 1,536 of 20,000 total transcripts were altered (p < 0.05) - 10 up- and 1,526 downregulated. Pathway enrichment analysis with MetaCore™ showed Hltf’s regulation of the G2/M transition (p=9.726E-15) of the cell cycle in heart is nearly identical to its role in brain. In addition, Brca1 and 12 members of the Brca1 associated genome surveillance complex are also downregulated. Activation of caspase 3 coincides with transcriptional repression of Bcl-2. Hltf loss caused downregulation of Wt1/Gata4/Hif-1a signaling cascades as well as Myh7b/miR499 transcription. Hltf-specific binding to promoters and/or regulatory regions of these genes was authenticated by ChIP-PCR. Hif-1a targets for prolyl (P4ha1, P4ha2) and lysyl (Plod2) collagen hydroxylation, PPIase enzymes (Ppid, Ppif, Ppil3) for collagen trimerization, and lysyl oxidase (Loxl2) for collagen-elastin crosslinking were downregulated. However, transcription of genes for collagens, fibronectin, Mmps and their inhibitors (Timps) was unaffected. The collective downregulation of genes whose protein products control collagen biogenesis caused disorganization of the interstitial and perivascular myocardial collagen fibrillar network as viewed with picrosirius red-staining, and authenticated with spectral imaging. Wavy collagen bundles in control hearts contrasted with collagen fibers that were thin, short and disorganized in Hltf null hearts. Collagen bundles in Hltf null hearts were tangled and fragmented. Thus, silencing Hltf during heart organogenesis compromised DNA double-strand break repair, and caused aberrant collagen biogenesis altering the structural network that transmits cardiomyocyte force into muscle contraction.
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Affiliation(s)
- Rebecca A. Helmer
- Department of Cell Biology & Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
| | - Raul Martínez-Zaguilán
- Department of Cell Physiology & Molecular Biophysics, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
| | - Janet S. Dertien
- Department of Pharmacology & Neuroscience, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
| | - Candra Fulford
- Department of Cell Biology & Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
| | - Oded Foreman
- The Jackson Laboratory, Sacramento, California, United States of America
| | - Vasum Peiris
- Department of Pediatrics, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
| | - Beverly S. Chilton
- Department of Cell Biology & Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
- * E-mail:
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Jun JH, Shin EJ, Kim JH, Kim SO, Shim JK, Kwak YL. Erythropoietin prevents hypoxia-induced GATA-4 ubiquitination via phosphorylation of serine 105 of GATA-4. Biol Pharm Bull 2013; 36:1126-33. [PMID: 23811561 DOI: 10.1248/bpb.b13-00100] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Erythropoietin (EPO), an essential hormone for erythropoiesis, can provide protection against myocardial ischemia/reperfusion (I/R) injury and hypoxic apoptosis. GATA-4 is a zinc finger transcription factor, and its activation and post-translational modification are essential components in the transcriptional response to hypoxia. GATA-4 has also been reported to play a role in the cellular mechanisms of EPO-induced myocardial protection against I/R injury. In this study, we aimed to investigate the influence of EPO on GATA-4 protein stability and post-translational modification under hypoxic conditions without reperfusion. EPO induced cell viability under long-term hypoxia. EPO significantly increased phosphorylation of GATA-4 via the extracellular signal-regulated kinase (ERK) signaling pathway and reduced hypoxia-induced GATA-4 ubiquitination, which enhanced GATA-4 stability under hypoxia. ERK activation by over-expression of constitutively active mitogen-activated protein kinase 1 (MEK1) strongly increased GATA-4 phosphorylation and its protein levels and decreased GATA-4 ubiquitination under hypoxia. Despite ERK activation, GATA-4 ubiquitination was not affected under hypoxia in a GATA-4-S105A mutant. Under hypoxic condition without reperfusion, EPO-induced ERK activation was associated with post-translational modification of GATA-4, mediated by enhancement of phosphorylation of GATA-4 at Ser-105. Subsequent attenuation of GATA-4 ubiquitination led to increases in GATA-4 protein stability, which resulted in increased cell viability under hypoxia.
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Affiliation(s)
- Ji Hae Jun
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul 120–752, Republic of Korea
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