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Miura T, Kouzu H, Tanno M, Tatekoshi Y, Kuno A. Role of AMP deaminase in diabetic cardiomyopathy. Mol Cell Biochem 2024:10.1007/s11010-024-04951-z. [PMID: 38386218 DOI: 10.1007/s11010-024-04951-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/24/2024] [Indexed: 02/23/2024]
Abstract
Diabetes mellitus is one of the major causes of ischemic and nonischemic heart failure. While hypertension and coronary artery disease are frequent comorbidities in patients with diabetes, cardiac contractile dysfunction and remodeling occur in diabetic patients even without comorbidities, which is referred to as diabetic cardiomyopathy. Investigations in recent decades have demonstrated that the production of reactive oxygen species (ROS), impaired handling of intracellular Ca2+, and alterations in energy metabolism are involved in the development of diabetic cardiomyopathy. AMP deaminase (AMPD) directly regulates adenine nucleotide metabolism and energy transfer by adenylate kinase and indirectly modulates xanthine oxidoreductase-mediated pathways and AMP-activated protein kinase-mediated signaling. Upregulation of AMPD in diabetic hearts was first reported more than 30 years ago, and subsequent studies showed similar upregulation in the liver and skeletal muscle. Evidence for the roles of AMPD in diabetes-induced fatty liver, sarcopenia, and heart failure has been accumulating. A series of our recent studies showed that AMPD localizes in the mitochondria-associated endoplasmic reticulum membrane as well as the sarcoplasmic reticulum and cytosol and participates in the regulation of mitochondrial Ca2+ and suggested that upregulated AMPD contributes to contractile dysfunction in diabetic cardiomyopathy via increased generation of ROS, adenine nucleotide depletion, and impaired mitochondrial respiration. The detrimental effects of AMPD were manifested at times of increased cardiac workload by pressure loading. In this review, we briefly summarize the expression and functions of AMPD in the heart and discuss the roles of AMPD in diabetic cardiomyopathy, mainly focusing on contractile dysfunction caused by this disorder.
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Affiliation(s)
- Tetsuji Miura
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan.
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 15-4-1, Maeda-7, Teine-Ku, Sapporo, 006-8585, Japan.
| | - Hidemichi Kouzu
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masaya Tanno
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Nursing, Sapporo Medical University School of Health Sciences, Sapporo, Japan
| | - Yuki Tatekoshi
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Atsushi Kuno
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Velasquez FC, Roman B, Hernández-Ochoa EO, Leppo MK, Truong SK, Steenbergen C, Schneider MF, Weiss RG, Das S. Contribution of skeletal muscle-specific microRNA-133b to insulin resistance in heart failure. Am J Physiol Heart Circ Physiol 2023; 324:H598-H609. [PMID: 36827227 PMCID: PMC10069972 DOI: 10.1152/ajpheart.00250.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 02/25/2023]
Abstract
Insulin resistance (IR) is one of the hallmarks of heart failure (HF). Abnormalities in skeletal muscle (SM) metabolism have been identified in patients with HF. However, the underlying mechanisms of IR development in SM in HF are poorly understood. Herein, we hypothesize that HF upregulates miR-133b in SM and in turn alters glucose metabolism and the propensity toward IR. Mitochondria isolated from SM of mice with HF induced by transverse aortic constriction (TAC) showed lower respiration and downregulation of muscle-specific components of the tricarboxylic acid (TCA) cycle, AMP deaminase 1 (AMPD1), and fumarate compared with those from control animals. RNA-Seq and subsequent qPCR validation confirmed upregulation of SM-specific microRNA (miRNA), miR-133b, in TAC versus sham animals. miR-133b overexpression alone resulted in significantly lower mitochondrial respiration, cellular glucose uptake, and glycolysis along with lower ATP production and cellular energy reserve compared with the scramble (Scr) in C2C12 cells. miR-133b binds to the 3'-untranslated region (UTR) of KLF15, the transcription factor for the insulin-sensitive glucose transporter, GLUT4. Overexpression of miR-133b lowers GLUT4 and lowers pAkt in presence of insulin in C2C12 cells. Finally, lowering miR-133b in primary skeletal myocytes isolated from TAC mice using antagomir-133b reversed the changes in KLF15, GLUT4, and AMPD1 compared with the scramble-transfected myocytes. Taken together, these data demonstrate a role for SM miR-133b in altered glucose metabolism in HF and suggest the therapeutic potential in HF to improve glucose uptake and glycolysis by restoring GLUT4 abundance. The data uncover a novel mechanism for IR and ultimately SM metabolic abnormalities in patients with HF.NEW & NOTEWORTHY Heart failure is associated with systemic insulin resistance and abnormalities in glucose metabolism but the underlying mechanisms are poorly understood. In the skeletal muscle, the major peripheral site of glucose utilization, we observe an increase in miR-133b in heart failure mice, which reduces the insulin-sensitive glucose transporter (GLUT4), glucose uptake, and metabolism in C2C12 and in myocytes. The antagomir for miR-133b restores GLUT4 protein and markers of metabolism in skeletal myocytes from heart failure mice demonstrating that miR-133b is an exciting target for systemic insulin resistance in heart failure and an important player in the cross talk between the heart and the periphery in the heart failure syndrome.
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Affiliation(s)
- Fernanda Carrizo Velasquez
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Barbara Roman
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Erick O Hernández-Ochoa
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland, United States
| | - Michelle K Leppo
- Division of Cardiology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Sharon K Truong
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Charles Steenbergen
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Martin F Schneider
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland, United States
| | - Robert G Weiss
- Division of Cardiology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Samarjit Das
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
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Metformin alleviates long-term high-fructose diet-induced skeletal muscle insulin resistance in rats by regulating purine nucleotide cycle. Eur J Pharmacol 2022; 933:175234. [PMID: 36058289 DOI: 10.1016/j.ejphar.2022.175234] [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: 06/27/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 11/24/2022]
Abstract
Nutrient excess caused by excessive fructose intake can lead to insulin resistance and dyslipidemia, which further causes the development of metabolic syndrome. Metformin is a well-known AMPK activator widely used for the treatment of metabolic syndrome, while the mechanism of AMPK activation remains unclear. The present study aimed to investigate the pharmacological effects of metformin on fructose-induced insulin resistance rat, and the potential mechanism underlying AMPK activation in skeletal muscle tissue. Results indicated that metformin significantly ameliorated features of insulin resistance, including body weight, Lee's index, hyperinsulinemia, dyslipidemia, insulin intolerance and pancreatic damage. Moreover, treatment with metformin attenuated the inflammatory response in serum and enhanced the antioxidant capacity in skeletal muscle tissue. The therapeutic effects of metformin on fructose-induced insulin resistance may be related to the activation of AMPK to regulate Nrf2 pathway and mitochondrial abnormality. Additionally, metformin suppressed the expression of adenosine monophosphate deaminase 1 (AMPD1) and up-regulated the expression of adenylosuccinate synthetase (ADSS) in the purine nucleotide cycle (PNC), which facilitated the increase of AMP level and the ratio of AMP/ATP. Therefore, we proposed a novel mechanism that metformin activated AMPK via increasing AMP by regulating the expression of AMPD1 and ADSS in PNC pathway.
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Dueker ND, Beecham A, Wang L, Dong C, Sacco RL, Blanton SH, Rundek T. Rare variants in previously identified linkage regions associated with carotid plaque in Dominican Republic families. PLoS One 2022; 17:e0250799. [PMID: 35020748 PMCID: PMC8754284 DOI: 10.1371/journal.pone.0250799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 04/13/2021] [Indexed: 11/18/2022] Open
Abstract
Carotid plaque is a subclinical measure of atherosclerosis. We have previously shown measures of carotid plaque to be heritable in a sample of 100 Dominican families and found evidence for linkage and association of common variants (CVs) on 7q36, 11p15, 14q32 and 15q23 with plaque presence. Our current study aimed to refine these regions further and identify rare variants (RVs) influencing plaque presence. Therefore, we performed targeted sequencing of the one LOD unit down region on 7q36, 11p15, 14q32 and 15q23 in 12 Dominican families with evidence for linkage to plaque presence. Gene-based RV analyses were performed using the Sequence Association Test for familial data (F-SKAT) under two filtering algorithms; 1. all exonic RVs and 2. non-synonymous RVs. Replication analyses were performed using a sample of 22 Dominican families and 556 unrelated Dominicans with Exome Array data. To identify additional non-synonymous RVs influencing plaque, we looked for co-segregation of RVs with plaque in each of the sequenced families. Our most strongly associated gene with evidence for replication was AMPD3 which showed suggestive association with plaque presence in the sequenced families (exonic RV p = 0.003, nonsynonymous RV p = 0.005) and replication families (exonic RV p = 0.04, nonsynonymous RV p = 0.02). Examination of the sequenced family pedigrees revealed two missense variants on chromosome 11 which co-segregated with plaque presence in one of our families; rs61751342 (located in DENND2B), and rs61760882 (located in RNF141). The rs61751342 missense variant is an eQTL for SCUBE2 in the atrial appendage. Notably, SCUBE2 encodes a protein which interacts with vascular endothelial growth factor (VEGF) receptor 2 to regulate VEGF-induced angiogenesis, thus providing biologic plausibility for this gene in atherosclerosis. In conclusion, using targeted sequencing of previously-identified linkage regions, we have identified suggestive evidence for the role of RVs in carotid plaque pathogenesis.
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MESH Headings
- AMP Deaminase/genetics
- Adaptor Proteins, Signal Transducing/genetics
- Adult
- Aged
- Calcium-Binding Proteins/genetics
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 14/genetics
- Chromosomes, Human, Pair 15/genetics
- Chromosomes, Human, Pair 7/genetics
- DNA-Binding Proteins/genetics
- Dominican Republic
- Genetic Linkage
- Genotype
- Humans
- Middle Aged
- Pedigree
- Plaque, Atherosclerotic/genetics
- Plaque, Atherosclerotic/pathology
- Polymorphism, Genetic
- Quantitative Trait Loci
- Transcription Factors/genetics
- Tumor Suppressor Proteins/genetics
- Vascular Endothelial Growth Factor Receptor-2/genetics
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Affiliation(s)
- Nicole D. Dueker
- John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, United States of America
| | - Ashley Beecham
- John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, United States of America
| | - Liyong Wang
- John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, United States of America
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miami, FL, United States of America
| | - Chuanhui Dong
- Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Ralph L. Sacco
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miami, FL, United States of America
- Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Evelyn F. McKnight Brain Institute, Department of Neurology, University of Miami, Miami, FL, United States of America
| | - Susan H. Blanton
- John P. Hussman Institute for Human Genomics, University of Miami, Miami, FL, United States of America
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miami, FL, United States of America
| | - Tatjana Rundek
- Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Evelyn F. McKnight Brain Institute, Department of Neurology, University of Miami, Miami, FL, United States of America
- * E-mail:
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Wang L, Zhang X, Wang M, Li Y, Xu J, Wei J, Li H, Ren G, Yin X. AMPD1 Is Associated With the Immune Response and Serves as a Prognostic Marker in HER2-Positive Breast Cancer. Front Oncol 2021; 11:749135. [PMID: 34900696 PMCID: PMC8660114 DOI: 10.3389/fonc.2021.749135] [Citation(s) in RCA: 6] [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] [Accepted: 10/25/2021] [Indexed: 01/12/2023] Open
Abstract
Background Although immunotherapy has been used in the treatment of metastatic triple negative breast cancer (TNBC), its therapeutic influence on human epidermal growth factor receptor 2 (HER2)-positive subtype remains controversial. It is therefore imperative to find biomarkers that can predict the immune response in HER2+ BC. Methods ESTIMATE was utilized to compute the ImmuneScore and StromalScore from data obtained from TCGA database, and differentially expressed genes (DEGs) were identified. In addition, univariate Cox regression was used to assess candidate genes such as AMPD1, CD33, and CCR5. Gene set enrichment analysis (GSEA) was used to further understand AMPD1-associated pathways. Moreover, immunohistochemical analyses were performed to further reveal the relationship among AMPD1, CD4 and CD8 genes. Results The expression of AMPD1 was markedly associated with disease outcome and tumor-infiltrating immune cells (TICs). In addition, AMPD1 was associated with lymph node status, age and the expression of PD-L1 and PD-L2. High AMPD1 expression was linked to longer overall survival (OS). Upregulated expression of AMPD1 correlated with the enrichment of immune-related signaling pathways. In addition, immunohistochemical analyses demonstrated a co-expression profile among AMPD1, CD4 and CD8 genes. Conclusions Taken together, our data demonstrated that AMPD1 might serve as a novel biomarker for predicting the immune response and disease outcome in HER2+ BC.
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Affiliation(s)
- Long Wang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xue Zhang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Mengxue Wang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yunhai Li
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiali Xu
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiaying Wei
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hongzhong Li
- Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guosheng Ren
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuedong Yin
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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6
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Tomczyk M, Glaser T, Slominska EM, Ulrich H, Smolenski RT. Purine Nucleotides Metabolism and Signaling in Huntington's Disease: Search for a Target for Novel Therapies. Int J Mol Sci 2021; 22:ijms22126545. [PMID: 34207177 PMCID: PMC8234552 DOI: 10.3390/ijms22126545] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/13/2021] [Accepted: 06/14/2021] [Indexed: 12/18/2022] Open
Abstract
Huntington’s disease (HD) is a multi-system disorder that is caused by expanded CAG repeats within the exon-1 of the huntingtin (HTT) gene that translate to the polyglutamine stretch in the HTT protein. HTT interacts with the proteins involved in gene transcription, endocytosis, and metabolism. HTT may also directly or indirectly affect purine metabolism and signaling. We aimed to review existing data and discuss the modulation of the purinergic system as a new therapeutic target in HD. Impaired intracellular nucleotide metabolism in the HD affected system (CNS, skeletal muscle and heart) may lead to extracellular accumulation of purine metabolites, its unusual catabolism, and modulation of purinergic signaling. The mechanisms of observed changes might be different in affected systems. Based on collected findings, compounds leading to purine and ATP pool reconstruction as well as purinergic receptor activity modulators, i.e., P2X7 receptor antagonists, may be applied for HD treatment.
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Affiliation(s)
- Marta Tomczyk
- Department of Biochemistry, Medical University of Gdansk, 80-210 Gdansk, Poland;
- Correspondence: (M.T.); (R.T.S.)
| | - Talita Glaser
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo 05508-000, Brazil; (T.G.); (H.U.)
| | - Ewa M. Slominska
- Department of Biochemistry, Medical University of Gdansk, 80-210 Gdansk, Poland;
| | - Henning Ulrich
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo 05508-000, Brazil; (T.G.); (H.U.)
| | - Ryszard T. Smolenski
- Department of Biochemistry, Medical University of Gdansk, 80-210 Gdansk, Poland;
- Correspondence: (M.T.); (R.T.S.)
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7
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Cowley AW, Dash RK. Computational/Experimental Interrogation of the Failing Heart-A Perspective on "Impaired Myocardial Energetics Causes Mechanical Dysfunction in Decompensated Failing Hearts". FUNCTION (OXFORD, ENGLAND) 2020; 1:zqaa022. [PMID: 35330639 PMCID: PMC8788834 DOI: 10.1093/function/zqaa022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 09/24/2020] [Accepted: 10/07/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Allen W Cowley
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA,Address correspondence to A.W.C. (e-mail: )
| | - Ranjan K Dash
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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Xu ZY, Zhao M, Chen W, Li K, Qin F, Xiang WW, Sun Y, Wei J, Yuan LQ, Li SK, Lin SH. Analysis of prognostic genes in the tumor microenvironment of lung adenocarcinoma. PeerJ 2020; 8:e9530. [PMID: 32775050 PMCID: PMC7382940 DOI: 10.7717/peerj.9530] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 06/22/2020] [Indexed: 12/11/2022] Open
Abstract
Background Prognostic genes in the tumor microenvironment play an important role in immune biological processes and the response of cancer to immunotherapy. Thus, we aimed to assess new biomarkers that are associated with immune/stromal cells in lung adenocarcinomas (LUAD) using the ESTIMATE algorithm, which also significantly affects the prognosis of cancer. Methods The RNA sequencing (RNA-Seq) and clinical data of LUAD were downloaded from the the Cancer Genome Atlas (TCGA ). The immune and stromal scores were calculated for each sample using the ESTIMATE algorithm. The LUAD gene chip expression profile data and the clinical data (GSE37745, GSE11969, and GSE50081) were downloaded from the Gene Expression Omnibus (GEO) for subsequent validation analysis. Differentially expressed genes were calculated between high and low score groups. Univariate Cox regression analysis was performed on differentially expressed genes (DEGs) between the two groups to obtain initial prognosis genes. These were verified by three independent LUAD cohorts from the GEO database. Multivariate Cox regression was used to identify overall survival-related DEGs. UALCAN and the Human Protein Atlas were used to analyze the mRNA /protein expression levels of the target genes. Immune cell infiltration was evaluated using the Tumor Immune Estimation Resource (TIMER) and CIBERSORT methods, and stromal cell infiltration was assessed using xCell. Results In this study, immune scores and stromal scores are significantly associated with the clinical characteristics of LUAD, including T stage, M stage, pathological stage, and overall survival time. 530 DEGs (18 upregulated and 512 downregulated) were found to coexist in the difference analysis with the immune scores and stromal scores subgroup. Univariate Cox regression analysis showed that 286 of the 530 DEGs were survival-related genes (p < 0.05). Of the 286 genes initially identified, nine prognosis-related genes (CSF2RB, ITK, FLT3, CD79A, CCR4, CCR6, DOK2, AMPD1, and IGJ) were validated from three separate LUAD cohorts. In addition, functional analysis of DEGs also showed that various immunoregulatory molecular pathways, including regulation of immune response and the chemokine signaling pathways, were involved. Five genes (CCR6, ITK, CCR4, DOK2, and AMPD1) were identified as independent prognostic indicators of LUAD in specific data sets. The relationship between the expression levels of these genes and immune genes was assessed. We found that CCR6 mRNA and protein expression levels of LUAD were greater than in normal tissues. We evaluated the infiltration of immune cells and stromal cells in groups with high and low levels of expression of CCR6 in the TCGA LUAD cohort. In summary, we found a series of prognosis-related genes that were associated with the LUAD tumor microenvironment.
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Affiliation(s)
- Zhan-Yu Xu
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Mengli Zhao
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Wenjie Chen
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Kun Li
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Fanglu Qin
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Wei-Wei Xiang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yu Sun
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jiangbo Wei
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Li-Qiang Yuan
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Shi-Kang Li
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Sheng-Hua Lin
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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9
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Mineralocorticoid receptor antagonists lead to increased adenosine bioavailability and modulate contractile cardiac parameters. Heart Vessels 2019; 35:719-730. [PMID: 31820090 DOI: 10.1007/s00380-019-01542-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 11/29/2019] [Indexed: 10/25/2022]
Abstract
Activation of mineralocorticoid receptor antagonists (MRAs) is cardioprotective; however, this property is lost upon blockade or inactivation of adenosine (ADO) receptor A2b. In this study, we investigated whether the effects of MRAs are mediated by an interaction between cardioprotective ADO receptors A1 and A3. Spironolactone (SPI) or eplerenone (EPL) increased ADO levels in the plasma of treated animals compared to control animals. SPI or EPL increased the protein and activity levels of ecto-5'-nucleotidase (NT5E), an enzyme that synthesizes ADO, compared to control. The levels of ADO deaminase (ADA), which degrades ADO, were not affected by SPI or EPL; however, the activity of ADA was reduced in SPI-treated rats compared to control. Using an isolated cardiomyocyte model, we found inotropic and chronotropic effects, and increased calcium transient [Ca2+]i in cells treated with ADO receptor A1 or A3 antagonists compared to control groups. Upon co-treatment with MRAs, EPL and SPI fully and partially reverted the effects of receptor A1 or A3 antagonism, respectively. Collectively, MRAs in vivo lead to increased ADO bioavailability. In vitro, the rapid effects of SPI and EPL are mediated by an interaction between ADO receptors A1 and A3.
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10
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Tatekoshi Y, Tanno M, Kouzu H, Abe K, Miki T, Kuno A, Yano T, Ishikawa S, Ohwada W, Sato T, Niinuma T, Suzuki H, Miura T. Translational regulation by miR-301b upregulates AMP deaminase in diabetic hearts. J Mol Cell Cardiol 2018; 119:138-146. [PMID: 29733818 DOI: 10.1016/j.yjmcc.2018.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 04/17/2018] [Accepted: 05/03/2018] [Indexed: 12/11/2022]
Abstract
AMP deaminase (AMPD) plays a crucial role in adenine nucleotide metabolism. Recently we found that upregulated AMPD activity is associated with ATP depletion and contractile dysfunction under the condition of pressure overloading in the heart of a rat model of type 2 diabetes mellitus (T2DM), OLETF. Here we examined the mechanism of AMPD upregulation by T2DM. The protein level of 90-kDa full-length AMPD3 was increased in whole myocardial lysates by 55% in OLETF compared to those in LETO, a non-diabetic control. In contrast, the mRNA levels of AMPD3 in the myocardium were similar in OLETF and LETO. AMPD3 was comparably ubiquitinated in OLETF and LETO, and its degradation ex vivo was more sensitive to MG-132, a proteasome inhibitor, in OLETF than in LETO. MicroRNA array analysis revealed downregulation (>50%) of 57 microRNAs in OLETF compared to those in LETO, among which miR-301b was predicted to interact with the 3'UTR of AMPD3 mRNA. AMPD3 protein level was significantly increased by a miR-301b inhibitor and was decreased by a miR-301b mimetic in H9c2 cells. A luciferase reporter assay confirmed binding of miR-301b to the 3'UTR of AMPD3 mRNA. Transfection of neonatal rat cardiomyocytes with a miR-301b inhibitor increased 90-kDa AMPD3 and reduced ATP level. The results indicate that translational regulation by miR-301b mediates upregulated expression of cardiac AMPD3 protein in OLETF, which potentially reduces the adenine nucleotide pool at the time of increased work load. The miR-301b-AMPD3 axis may be a novel therapeutic target for intervening enegy metabolism in diabetic hearts.
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Affiliation(s)
- Yuki Tatekoshi
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masaya Tanno
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hidemichi Kouzu
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Koki Abe
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takayuki Miki
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Atsushi Kuno
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan; Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshiyuki Yano
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Satoko Ishikawa
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Wataru Ohwada
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tatsuya Sato
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan; Department of Cellular Physiology and Signal Transduction, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takeshi Niinuma
- Department of Molecular Biology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hiromu Suzuki
- Department of Molecular Biology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tetsuji Miura
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan.
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Pelikant-Malecka I, Kaniewska-Bednarczuk E, Szrok S, Sielicka A, Sledzinski M, Orlewska C, Smolenski RT, Slominska EM. Metabolic pathway of 4-pyridone-3-carboxamide-1β-d-ribonucleoside and its effects on cellular energetics. Int J Biochem Cell Biol 2017; 88:31-43. [PMID: 28323211 DOI: 10.1016/j.biocel.2017.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 02/17/2017] [Accepted: 03/15/2017] [Indexed: 12/14/2022]
Abstract
4-pirydone-3-carboxamide-1β-d-ribonucleoside (4PYR) is an endogenous nucleoside that could be converted to triphosphates, diphosphates, monophosphates and an analogue of NAD - 4PYRAD. Elevated level of these compounds have been reported in chronic renal failure, cancer and active HIV infection. However, little is known about the effect on cell functionality and the metabolic pathways. This study tested effects of 4PYR in different cell types on nucleotide, energy metabolism and clarified enzymes that are involved in conversions of 4PYR. We have found that human neuroblastoma cells, human malignant melanoma cells, human adipose-derived stem cells, human bone marrow-derived stem cells, human dermal microvascular endothelial cells and human embryonic kidney cells, were capable to convert 4PYR into its derivatives. This was associated with deterioration of cellular energetics. Incubation with 4PYR did not affect mitochondrial function, but decreased glycolytic rate (as measured by extracellular acidification) in endothelial cells. Silencing of adenosine kinase, cytosolic 5'-nucleotidase II and nicotinamide nucleotide adenylyltransferase 3, blocked metabolism of 4PYR. Incubation of endothelial cells with 4PYR decreased AMP deaminase activity by 40%. The main finding of this paper is that human cells (including cancer type) are capable of metabolizing 4PYR that lead to deterioration of energy metabolism, possibly as the consequence of inhibition of glycolysis. This study, it was also found that several enzymes of nucleotide metabolism could also contribute to the 4PYRconversions.
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Affiliation(s)
- Iwona Pelikant-Malecka
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland
| | | | - Sylwia Szrok
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland
| | - Alicja Sielicka
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland; Structural Heart Research Lab, Division of Cardiothoracic Surgery, Emory University, 380-B Northyards Blvd, Atlanta, 30308 GA, USA
| | - Maciej Sledzinski
- Department of General Surgery, Department of Emergency Medicine, Medical University of Gdansk, Smoluchowskiego 17, 80-211 Gdansk, Poland
| | - Czesława Orlewska
- Department of Organic Chemistry, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416 Gdansk, Poland
| | - Ryszard T Smolenski
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland
| | - Ewa M Slominska
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland.
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Toczek M, Kutryb-Zajac B, Zukowska P, Slominska EM, Isalan M, Mielcarek M, Smolenski RT. Changes in cardiac nucleotide metabolism in Huntington's disease. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2017; 35:707-712. [PMID: 27906632 DOI: 10.1080/15257770.2016.1154969] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Huntington's disease (HD) is a monogenic neurodegenerative disorder with a significant peripheral component to the disease pathology. This includes an HD-related cardiomyopathy, with an unknown pathological mechanism. In this study, we aimed to define changes in the metabolism of cardiac nucleotides using the well-established R6/2 mouse model. In particular, we focused on measuring the activity of enzymes that control ATP and other adenine nucleotides in the cardiac pool, including eNTPD, AMPD, e5'NT, ADA, and PNP. We employed HPLC to assay the activities of these enzymes by measuring the concentrations of adenine nucleotide catabolites in the hearts of symptomatic R6/2 mice. We found a reduced activity of AMPD (12.9 ± 1.9 nmol/min/mg protein in control; 7.5 ± 0.5 nmol/min/mg protein in R6/2) and e5'NT (11.9 ± 1.7 nmol/min/mg protein in control; 6.7 ± 0.7 nmol/min/mg protein in R6/2). Moreover, we detected an increased activity of ADA (1.3 ± 0.2 nmol/min/mg protein in control; 5.2 ± 0.5 nmol/min/mg protein in R6/2), while no changes in eNTPD and PNP activities were observed. Analysis of cardiac adenine nucleotide catabolite levels revealed an increased inosine level (0.7 ± 0.01 nmol/mg dry tissue in control; 2.7 ±0.8 nmol/mg dry tissue in R6/2) and a reduced concentration of cardiac adenosine (0.9 ± 0.2 nmol/mg dry tissue in control; 0.2 ± 0.08 nmol/mg dry tissue in R6/2). This study highlights a decreased rate of degradation of cardiac nucleotides in HD mouse model hearts, and an increased capacity for adenosine deamination, that may alter adenosine signaling.
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Affiliation(s)
- Marta Toczek
- a Department of Biochemistry , Medical University of Gdańsk , Gdańsk , Poland
| | | | - Paulina Zukowska
- a Department of Biochemistry , Medical University of Gdańsk , Gdańsk , Poland
| | - Ewa M Slominska
- a Department of Biochemistry , Medical University of Gdańsk , Gdańsk , Poland
| | - Mark Isalan
- b Department of Life Sciences , Imperial College London , UK
| | | | - Ryszard T Smolenski
- a Department of Biochemistry , Medical University of Gdańsk , Gdańsk , Poland
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Yusof F, Mehde AA, Mehdi WA, Ghazali H, Rahman AA. The effect of renal stones on serum adenosine aminohydrolase and AMP-aminohydrolase in Malaysia. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/j.apjtb.2015.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Inhibition of AMP deaminase as therapeutic target in cardiovascular pathology. Pharmacol Rep 2015; 67:682-8. [PMID: 26321268 DOI: 10.1016/j.pharep.2015.04.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/10/2015] [Accepted: 04/14/2015] [Indexed: 11/20/2022]
Abstract
AMP deaminase (AMPD; EC 3.5.4.6) catalyzes hydrolysis of the amino group from the adenine ring of AMP resulting in production of inosine 5'-monophosphate (IMP) and ammonia. This reaction helps to maintain healthy cellular energetics by removing excess AMP that accumulates in energy depleted cells. Furthermore, AMPD permits the synthesis of guanine nucleotides from the larger adenylate pool. This enzyme competes with cytosolic 5'-nucleotidases (c5NT) for AMP. Adenosine, a product of c5NT is a vasodilator, antagonizes inotropic effects of catecholamines and exerts anti-platelet, anti-inflammatory and immunosuppressive activities. The ratio of AMPD/c5NT defines the amount of adenosine produced in adenine nucleotide catabolic pathway. Inhibition of AMPD could alter this ratio resulting in increased adenosine production. Besides the potential effect on adenosine production, elevation of AMP due to inhibition of AMPD could also lead to activation of AMP regulated protein kinase (AMPK) with myriad of downstream events including enhanced energetic metabolism, mitochondrial biogenesis and cytoprotection. While the benefits of these processes are well appreciated in cells such as skeletal or cardiac myocytes its role in protection of endothelium could be even more important. Therapeutic use of AMPD inhibition has been limited due to difficulties with obtaining compounds with adequate characteristics. However, endothelium seems to be the easiest target as effective inhibition of AMPD could be achieved at much lower concentration than in the other types of cells. New generation of AMPD inhibitors has recently been established and its testing in context of endothelial and organ protection could provide important basic knowledge and potential therapeutic tools.
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