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Soliman B, Salem A, Ghazy M, Abu-Shahba N, El Hefnawi M. Bioinformatics functional analysis of let-7a, miR-34a, and miR-199a/b reveals novel insights into immune system pathways and cancer hallmarks for hepatocellular carcinoma. Tumour Biol 2018; 40:1010428318773675. [PMID: 29775159 DOI: 10.1177/1010428318773675] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Let-7a, miR-34a, and miR-199 a/b have gained a great attention as master regulators for cellular processes. In particular, these three micro-RNAs act as potential onco-suppressors for hepatocellular carcinoma. Bioinformatics can reveal the functionality of these micro-RNAs through target prediction and functional annotation analysis. In the current study, in silico analysis using innovative servers (miRror Suite, DAVID, miRGator V3.0, GeneTrail) has demonstrated the combinatorial and the individual target genes of these micro-RNAs and further explored their roles in hepatocellular carcinoma progression. There were 87 common target messenger RNAs (p ≤ 0.05) that were predicted to be regulated by the three micro-RNAs using miRror 2.0 target prediction tool. In addition, the functional enrichment analysis of these targets that was performed by DAVID functional annotation and REACTOME tools revealed two major immune-related pathways, eight hepatocellular carcinoma hallmarks-linked pathways, and two pathways that mediate interconnected processes between immune system and hepatocellular carcinoma hallmarks. Moreover, protein-protein interaction network for the predicted common targets was obtained by using STRING database. The individual analysis of target genes and pathways for the three micro-RNAs of interest using miRGator V3.0 and GeneTrail servers revealed some novel predicted target oncogenes such as SOX4, which we validated experimentally, in addition to some regulated pathways of immune system and hepatocarcinogenesis such as insulin signaling pathway and adipocytokine signaling pathway. In general, our results demonstrate that let-7a, miR-34a, and miR-199 a/b have novel interactions in different immune system pathways and major hepatocellular carcinoma hallmarks. Thus, our findings shed more light on the roles of these miRNAs as cancer silencers.
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Affiliation(s)
- Bangly Soliman
- 1 Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt.,2 Informatics and Systems Department, Biomedical Informatics and Chemo-Informatics Group, Centre of Excellence for Advanced Sciences (CEAS), Division of Engineering Research, National Research Centre, Cairo, Egypt
| | - Ahmed Salem
- 1 Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Mohamed Ghazy
- 1 Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Nourhan Abu-Shahba
- 3 Stem Cells Research Group, Medical Centre of Excellence, Medical Molecular Genetics Department, National Research Centre, Cairo, Egypt
| | - Mahmoud El Hefnawi
- 2 Informatics and Systems Department, Biomedical Informatics and Chemo-Informatics Group, Centre of Excellence for Advanced Sciences (CEAS), Division of Engineering Research, National Research Centre, Cairo, Egypt.,4 Centre for Informatics, Nile University, Sheikh Zayed City, Egypt
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Li W, Wang J, Chen QD, Qian X, Li Q, Yin Y, Shi ZM, Wang L, Lin J, Liu LZ, Jiang BH. Insulin promotes glucose consumption via regulation of miR-99a/mTOR/PKM2 pathway. PLoS One 2013; 8:e64924. [PMID: 23762265 PMCID: PMC3677911 DOI: 10.1371/journal.pone.0064924] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 04/20/2013] [Indexed: 01/17/2023] Open
Abstract
Insulin is known to regulate multiple cellular functions and is used for the treatment of diabetes. MicroRNAs have been demonstrated to be involved in many human diseases, including Type 2 diabetes. In this study, we showed that insulin decreased miR-99a expression levels, but induced glucose consumption and lactate production, and increased the expression of mTOR, HIF-1α and PKM2 in HepG2 and HL7702 cells. Forced expression of miR-99a or rapamycin treatment blocked insulin-induced PKM2 and HIF-1α expression, and glucose consumption and lactate production. Meanwhile, knockdown of HIF-1α inhibited PKM2 expression and insulin-induced glucose consumption. Taken together, these findings will reveal the role and mechanism of insulin in regulating glycolytic activities via miR-99a/mTOR.
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MESH Headings
- Antibiotics, Antineoplastic/pharmacology
- Blotting, Western
- Carcinoma, Hepatocellular/drug therapy
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Cells, Cultured
- Gene Expression Regulation, Neoplastic/drug effects
- Glucose/metabolism
- Humans
- Hypoglycemic Agents/pharmacology
- Hypoxia-Inducible Factor 1, alpha Subunit/antagonists & inhibitors
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Insulin/pharmacology
- Lactates/metabolism
- Liver/metabolism
- Liver/pathology
- Liver Neoplasms/drug therapy
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Luciferases/metabolism
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- MicroRNAs/genetics
- Phosphorylation
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Signal Transduction/drug effects
- Sirolimus/pharmacology
- TOR Serine-Threonine Kinases/genetics
- TOR Serine-Threonine Kinases/metabolism
- Thyroid Hormones/genetics
- Thyroid Hormones/metabolism
- Thyroid Hormone-Binding Proteins
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Affiliation(s)
- Wei Li
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Jing Wang
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Qiu-Dan Chen
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Xu Qian
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Qi Li
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Yu Yin
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Zhu-Mei Shi
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lin Wang
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Jie Lin
- Faculty of Software, Fujian Normal University, Fuzhou, China
| | - Ling-Zhi Liu
- Department of Pathology, Anatomy and Cell Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Bing-Hua Jiang
- Department of Pathology, Cancer Center, Nanjing Medical University, Nanjing, China
- Department of Pathology, Anatomy and Cell Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
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Brunmair B, Staniek K, Lehner Z, Dey D, Bolten CW, Stadlbauer K, Luger A, Fürnsinn C. Lipophilicity as a determinant of thiazolidinedione action in vitro: findings from BLX-1002, a novel compound without affinity to PPARs. Am J Physiol Cell Physiol 2011; 300:C1386-92. [PMID: 21346152 DOI: 10.1152/ajpcell.00401.2010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The pharmacology of thiazolidinediones (TZDs) seems to be driven not only by activation of peroxisome proliferator-activated receptor-γ (PPARγ), but also by PPARγ-independent effects on mitochondrial function and cellular fuel handling. This study portrayed such actions of the novel hydrophilic TZD compound BLX-1002 and compared them to those of conventional TZDs. Mitochondrial function and fuel handling were examined in disrupted rat muscle mitochondria, intact rat liver mitochondria, and specimens of rat skeletal muscle. BLX-1002 was superior to most other TZDs as an inhibitor of respiratory complex 1 in disrupted mitochondria, but had less effect than any other TZD on oxygen consumption by intact mitochondria and on fuel metabolism by intact tissue. The latter finding was obviously related to the hydrophilic properties of BLX-1002, because high potentials of individual TZDs to shift muscle fuel metabolism from the aerobic into the anaerobic pathway were associated with high ClogP values indicative of high lipophilicity and low hydrophilicity (e.g., % increase in lactate release induced by 10 μmol/l of respective compound: BLX-1002, ClogP 0.39, +10 ± 8%, not significant; pioglitazone, ClogP 3.53, +68 ± 12%, P < 0.001; troglitazone, ClogP 5.58, +157 ± 14%, P < 0.001). The observed specific properties of BLX-1002 could result from relatively strong direct affinity to an unknown mitochondrial target, but limited access to this target. Results suggest 1) that impairment of mitochondrial function and increased anaerobic fuel metabolism are unlikely to account for PPARγ-independent glucose lowering by BLX-1002, and 2) that higher lipophilicity of an individual TZD is associated with stronger acceleration of anaerobic glycolysis.
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Affiliation(s)
- Barbara Brunmair
- Dept. of Medicine III, Division of Endocrinology and Metabolism, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, Austria
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