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Li X, Zhou H, Lu P, Fang Z, Shi G, Tong X, Chen W, Jiang G, Zhang P, Tian J, Li Q. miPEP31 alleviates Ang II-induced hypertension in mice by occupying Cebpα binding sites in the pri-miR-31 promoter. Cardiovasc Diabetol 2024; 23:249. [PMID: 38992718 PMCID: PMC11241881 DOI: 10.1186/s12933-024-02337-5] [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: 03/21/2024] [Accepted: 06/26/2024] [Indexed: 07/13/2024] Open
Abstract
BACKGROUND Previous studies have shown that peptides encoded by noncoding RNAs (ncRNAs) can be used as peptide drugs to alleviate diseases. We found that microRNA-31 (miR-31) is involved in the regulation of hypertension and that the peptide miPEP31, which is encoded by the primary transcript of miR-31 (pri-miR-31), can inhibit miR-31 expression. However, the role and mechanism of miPEP31 in hypertension have not been elucidated. METHODS miPEP31 expression was determined by western blot analysis. miPEP31-deficient mice (miPEP31-/-) were used, and synthetic miPEP31 was injected into Ang II-induced hypertensive mice. Blood pressure was monitored through the tail-cuff method. Histological staining was used to evaluate renal damage. Regulatory T (Treg) cells were assessed by flow cytometry. Differentially expressed genes were analysed through RNA sequencing. The transcription factors were predicted by JASPAR. Luciferase reporter and electrophoretic mobility shift assays (EMSAs) were used to determine the effect of pri-miR-31 on the promoter activity of miPEP31. Images were taken to track the entry of miPEP31 into the cell. RESULTS miPEP31 is endogenously expressed in target organs and cells related to hypertension. miPEP31 deficiency exacerbated but exogenous miPEP31 administration mitigated the Ang II-induced systolic blood pressure (SBP) elevation, renal impairment and Treg cell decreases in the kidney. Moreover, miPEP31 deletion increased the expression of genes related to Ang II-induced renal fibrosis. miPEP31 inhibited the transcription of miR-31 and promoted Treg differentiation by occupying the Cebpα binding site. The minimal functional domain of miPEP31 was identified and shown to regulate miR-31. CONCLUSION miPEP31 was identified as a potential therapeutic peptide for treating hypertension by promoting Treg cell differentiation in vivo. Mechanistically, we found that miPEP31 acted as a transcriptional repressor to specifically inhibit miR-31 transcription by competitively occupying the Cebpα binding site in the pri-miR-31 promoter. Our study highlights the significant therapeutic effect of miPEP31 on hypertension and provides novel insight into the role and mechanism of miPEPs.
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Affiliation(s)
- Xiangxiao Li
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
- Precision Research Center for Refractory Diseases, Institute for Clinical Research, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hong Zhou
- Precision Research Center for Refractory Diseases, Institute for Clinical Research, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Pengfei Lu
- Precision Research Center for Refractory Diseases, Institute for Clinical Research, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Zilong Fang
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Guangzheng Shi
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Xinran Tong
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Wendong Chen
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Gonghao Jiang
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Peili Zhang
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Jingyan Tian
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital,, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Clinical Trials Center, Ruijin Hospital,, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Qun Li
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Institute of Hypertension,, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China.
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Pandaram A, Paul J, Wankhar W, Thakur A, Verma S, Vasudevan K, Wankhar D, Kammala AK, Sharma P, Jaganathan R, Iyaswamy A, Rajan R. Aspartame Causes Developmental Defects and Teratogenicity in Zebra Fish Embryo: Role of Impaired SIRT1/FOXO3a Axis in Neuron Cells. Biomedicines 2024; 12:855. [PMID: 38672209 PMCID: PMC11048232 DOI: 10.3390/biomedicines12040855] [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: 03/07/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Aspartame, a widely used artificial sweetener, is present in many food products and beverages worldwide. It has been linked to potential neurotoxicity and developmental defects. However, its teratogenic effect on embryonic development and the underlying potential mechanisms need to be elucidated. We investigated the concentration- and time-dependent effects of aspartame on zebrafish development and teratogenicity. We focused on the role of sirtuin 1 (SIRT1) and Forkhead-box transcription factor (FOXO), two proteins that play key roles in neurodevelopment. It was found that aspartame exposure reduced the formation of larvae and the development of cartilage in zebrafish. It also delayed post-fertilization development by altering the head length and locomotor behavior of zebrafish. RNA-sequencing-based DEG analysis showed that SIRT1 and FOXO3a are involved in neurodevelopment. In silico and in vitro analyses showed that aspartame could target and reduce the expression of SIRT1 and FOXO3a proteins in neuron cells. Additionally, aspartame triggered the reduction of autophagy flux by inhibiting the nuclear translocation of SIRT1 in neuronal cells. The findings suggest that aspartame can cause developmental defects and teratogenicity in zebrafish embryos and reduce autophagy by impairing the SIRT1/FOXO3a axis in neuron cells.
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Affiliation(s)
- Athiram Pandaram
- Department of Physiology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Chennai 600113, Tamil Nadu, India
| | - Jeyakumari Paul
- Department of Physiology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Chennai 600113, Tamil Nadu, India
| | - Wankupar Wankhar
- Faculty of Paramedical Sciences, Assam down town University, Guwahati 781026, Assam, India
| | - Abhimanyu Thakur
- Pritzker School of Molecular Engineering, Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
- Department of Pharmacology, Delhi Pharmaceutical Sciences and Research University, New Delhi 110017, India
| | - Sakshi Verma
- Department of Pharmacy, Usha Martin University, Ranchi 835103, Jharkhand, India
| | - Karthick Vasudevan
- Department of Biotechnology, REVA University, Bangalore 560064, Karnataka, India
| | - Dapkupar Wankhar
- Faculty of Paramedical Sciences, Assam down town University, Guwahati 781026, Assam, India
| | - Ananth Kumar Kammala
- Department of Obstetrics and Gynaecology, The University of Texas Medical Branch, Galveston, TX 77550, USA
| | - Priyanshu Sharma
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Ravindran Jaganathan
- Preclinical Department, Faculty of Medicine, Royal College of Medicine Perak, Universiti Kuala Lumpur, Ipoh 30450, Perak, Malaysia
| | - Ashok Iyaswamy
- Mr. & Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong
- Department of Biochemistry, Karpagam Academy of Higher Education, Coimbatore 641021, Tamil Nadu, India
| | - Ravindran Rajan
- Department of Physiology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Chennai 600113, Tamil Nadu, India
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Guo X, Peng K, He Y, Xue L. Mechanistic regulation of FOXO transcription factors in the nucleus. Biochim Biophys Acta Rev Cancer 2024; 1879:189083. [PMID: 38309444 DOI: 10.1016/j.bbcan.2024.189083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/28/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
FOXO proteins represent evolutionarily conserved transcription factors (TFs) that play critical roles in responding to various physiological signals or pathological stimuli, either through transcription-dependent or -independent mechanisms. Dysfunction of these proteins have been implicated in numerous diseases, including cancer. Although the regulation of FOXO TFs shuttling between the cytoplasm and the nucleus has been extensively studied and reviewed, there's still a lack of a comprehensive review focusing on the intricate interactions between FOXO, DNA, and cofactors in the regulation of gene expression. In this review, we aim to summarize recent advances and provide a detailed understanding of the mechanism underlying FOXO proteins binding to target DNA. Additionally, we will discuss the challenges associated with pharmacological approaches in modulating FOXO function, and explore the dynamic association between TF, DNA, and RNA on chromatin. This review will contribute to a better understanding of mechanistic regulations of eukaryotic TFs within the nucleus.
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Affiliation(s)
- Xiaowei Guo
- The Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, School of Medicine, Hunan Normal University, Changsha, China; The Engineering Research Center of Reproduction and Translational Medicine of Hunan Province, Changsha, China.
| | - Kai Peng
- Institute of Intervention Vessel, Shanghai 10th People's Hospital, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, Shanghai, China
| | - Yanwen He
- Changsha Stomatological Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Lei Xue
- Institute of Intervention Vessel, Shanghai 10th People's Hospital, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, Shanghai, China.
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Wu B, Chen X, Hu J, Wang ZY, Wang Y, Xu DY, Guo HB, Shao CW, Zhou LQ, Sun XJ, Yu T, Wang XM, Zheng YX, Fan GY, Liu ZH. Combined ATAC-seq, RNA-seq, and GWAS analysis reveals glycogen metabolism regulatory network in Jinjiang oyster ( Crassostrea ariakensis). Zool Res 2024; 45:201-214. [PMID: 38199974 PMCID: PMC10839670 DOI: 10.24272/j.issn.2095-8137.2023.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/08/2023] [Indexed: 01/12/2024] Open
Abstract
Glycogen serves as the principal energy reserve for metabolic processes in aquatic shellfish and substantially contributes to the flavor and quality of oysters. The Jinjiang oyster ( Crassostrea ariakensis) is an economically and ecologically important species in China. In the present study, RNA sequencing (RNA-seq) and assay for transposase-accessible chromatin using sequencing (ATAC-seq) were performed to investigate gene expression and chromatin accessibility variations in oysters with different glycogen contents. Analysis identified 9 483 differentially expressed genes (DEGs) and 7 215 genes with significantly differential chromatin accessibility (DCAGs) were obtained, with an overlap of 2 600 genes between them. Notably, a significant proportion of these genes were enriched in pathways related to glycogen metabolism, including "Glycogen metabolic process" and "Starch and sucrose metabolism". In addition, genome-wide association study (GWAS) identified 526 single nucleotide polymorphism (SNP) loci associated with glycogen content. These loci corresponded to 241 genes, 63 of which were categorized as both DEGs and DCAGs. This study enriches basic research data and provides insights into the molecular mechanisms underlying the regulation of glycogen metabolism in C. ariakensis.
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Affiliation(s)
- Biao Wu
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, Shandong 266071, China
| | - Xi Chen
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, Shandong 266071, China
| | - Jie Hu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, Shandong 266426, China
| | - Zhen-Yuan Wang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
| | - Yan Wang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
| | - Da-You Xu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, Shandong 266426, China
| | - Hao-Bing Guo
- BGI-Qingdao, BGI-Shenzhen, Qingdao, Shandong 266426, China
| | - Chang-Wei Shao
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, Shandong 266071, China
| | - Li-Qing Zhou
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, Shandong 266071, China
| | - Xiu-Jun Sun
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, Shandong 266071, China
| | - Tao Yu
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yantai, Shandong 265800, China
| | - Xiao-Mei Wang
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yantai, Shandong 265800, China
| | - Yan-Xin Zheng
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yantai, Shandong 265800, China
| | - Guang-Yi Fan
- BGI-Qingdao, BGI-Shenzhen, Qingdao, Shandong 266426, China
- State Key Laboratory of Agricultural Genomics, BGI- Shenzhen, Shenzhen, Guangdong 518083, China. E-mail:
| | - Zhi-Hong Liu
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, Shandong 266071, China. E-mail:
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Li R, Yang L, Li S, Chen S, Ren Y, Shen L, Dong L, Chen X, Li J, Xu M. C/EBPα alleviates hepatic ischemia-reperfusion injury by inhibiting endoplasmic reticulum stress via HDAC1-mediated deacetylation of ATF4. J Biochem Mol Toxicol 2024; 38:e23630. [PMID: 38229308 DOI: 10.1002/jbt.23630] [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: 09/14/2023] [Revised: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 01/18/2024]
Abstract
Hepatic ischemia-reperfusion (IR) injury is a complex systemic process causing a series clinical problem. C/EBPα is a key transcription factor for hepatocyte function, but its role and mechanism in regulating hepatic IR injury are largely unknown. Occluding portal vein and hepatic artery was used to establish a mouse model of hepatic IR injury. C/EBPα expression was decreased in IR-injured liver compared with the sham, accompanied by increased contents of serum alanine transaminase (ALT), aspartate transaminase (AST), high mobility group box-1, and proportion of hepatic cells. Oxygen and glucose deprivation/recovery (OGD/R) was used to establish a cellular hepatic IR model in WRL-68 hepatocytes in vitro, and C/EBPα was overexpressed in the hepatocytes to evaluate its effect on hepatic IR injury. OGD/R promoted oxidative stress, cell apoptosis and endoplasmic reticulum (ER) stress in hepatocytes, which was reversed by C/EBPα overexpression. Then, we found that C/EBPα promoted histone deacetylase 1 (HDAC1) transcription through binding to HDAC1 promoter. Moreover, HDAC1 deacetylated the activating transcription factor 4 (ATF4), a key positive regulator of ER stress. Trichostatin-A (an HDAC inhibitor) or ATF4 overexpression reversed the improvement of C/EBPα on OGD/R-induced ER stress and hepatocyte dysfunction. 4-Phenylbutyric acid (an endoplasmic reticulum stress inhibitor) also reversed the hepatic IR injury induced by ATF4 overexpression. Finally, lentivirus-mediated C/EBPα overexpression vector was applied to administrate hepatic IR mice, and the results showed that C/EBPα overexpression ameliorated IR-induced hepatic injury, manifesting with reduced ALT/AST, oxidative stress and ER stress. Altogether, our findings suggested that C/EBPα ameliorated hepatic IR injury by inhibiting ER stress via HDAC1-mediated deacetylation of ATF4 promoter.
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Affiliation(s)
- Rong Li
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Longbao Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Shunle Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Shuo Chen
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Yifan Ren
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Lin Shen
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Lei Dong
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Xi Chen
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Junhui Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Meng Xu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
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Feng R, Tong C, Lin T, Liu H, Shao C, Li Y, Sticht C, Kan K, Li X, Liu R, Wang S, Wang S, Munker S, Niess H, Meyer C, Liebe R, Ebert MP, Dooley S, Wang H, Ding H, Weng HL. Insulin Determines Transforming Growth Factor β Effects on Hepatocyte Nuclear Factor 4α Transcription in Hepatocytes. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:52-70. [PMID: 37820926 DOI: 10.1016/j.ajpath.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/19/2023] [Accepted: 09/12/2023] [Indexed: 10/13/2023]
Abstract
Loss of hepatocyte nuclear factor 4α (HNF4α) expression is frequently observed in end-stage liver disease and associated with loss of vital liver functions, thus increasing mortality. Loss of HNF4α expression is mediated by inflammatory cytokines, such as transforming growth factor (TGF)-β. However, details of how HNF4α is suppressed are largely unknown to date. Herein, TGF-β did not directly inhibit HNF4α but contributed to its transcriptional regulation by SMAD2/3 recruiting acetyltransferase CREB-binding protein/p300 to the HNF4α promoter. The recruitment of CREB-binding protein/p300 is indispensable for CCAAT/enhancer-binding protein α (C/EBPα) binding, another essential requirement for constitutive HNF4α expression in hepatocytes. Consistent with the in vitro observation, 67 of 98 patients with hepatic HNF4α expressed both phospho-SMAD2 and C/EBPα, whereas 22 patients without HNF4α expression lacked either phospho-SMAD2 or C/EBPα. In contrast to the observed induction of HNF4α, SMAD2/3 inhibited C/EBPα transcription. Long-term TGF-β incubation resulted in C/EBPα depletion, which abrogated HNF4α expression. Intriguingly, SMAD2/3 inhibitory binding to the C/EBPα promoter was abolished by insulin. Two-thirds of patients without C/EBPα lacked membrane glucose transporter type 2 expression in hepatocytes, indicating insulin resistance. Taken together, these data indicate that hepatic insulin sensitivity is essential for hepatic HNF4α expression in the condition of inflammation.
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Affiliation(s)
- Rilu Feng
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Chenhao Tong
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Tao Lin
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Hui Liu
- Department of Pathology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Chen Shao
- Department of Pathology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Yujia Li
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Carsten Sticht
- NGS Core Facility, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Kejia Kan
- Department of Surgery, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Xiaofeng Li
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Rui Liu
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Sai Wang
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Shanshan Wang
- Beijing Institute of Hepatology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Stefan Munker
- Department of Medicine II, Liver Centre Munich, University Hospital, Campus Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany; Liver Centre Munich, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Hanno Niess
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany; Biobank of the Department of General, Visceral and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christoph Meyer
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Roman Liebe
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke-University, Magdeburg, Germany
| | - Matthias P Ebert
- Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Clinical Cooperation Unit Healthy Metabolism, Center of Preventive Medicine and Digital Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Steven Dooley
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Hua Wang
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Huiguo Ding
- Department of Gastroenterology and Hepatology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Hong-Lei Weng
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
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7
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Hasan A, Khan NA, Uddin S, Khan AQ, Steinhoff M. Deregulated transcription factors in the emerging cancer hallmarks. Semin Cancer Biol 2024; 98:31-50. [PMID: 38123029 DOI: 10.1016/j.semcancer.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/25/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Cancer progression is a multifaceted process that entails several stages and demands the persistent expression or activation of transcription factors (TFs) to facilitate growth and survival. TFs are a cluster of proteins with DNA-binding domains that attach to promoter or enhancer DNA strands to start the transcription of genes by collaborating with RNA polymerase and other supporting proteins. They are generally acknowledged as the major regulatory molecules that coordinate biological homeostasis and the appropriate functioning of cellular components, subsequently contributing to human physiology. TFs proteins are crucial for controlling transcription during the embryonic stage and development, and the stability of different cell types depends on how they function in different cell types. The development and progression of cancer cells and tumors might be triggered by any anomaly in transcription factor function. It has long been acknowledged that cancer development is accompanied by the dysregulated activity of TF alterations which might result in faulty gene expression. Recent studies have suggested that dysregulated transcription factors play a major role in developing various human malignancies by altering and rewiring metabolic processes, modifying the immune response, and triggering oncogenic signaling cascades. This review emphasizes the interplay between TFs involved in metabolic and epigenetic reprogramming, evading immune attacks, cellular senescence, and the maintenance of cancer stemness in cancerous cells. The insights presented herein will facilitate the development of innovative therapeutic modalities to tackle the dysregulated transcription factors underlying cancer.
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Affiliation(s)
- Adria Hasan
- Molecular Cell Biology Laboratory, Integral Information and Research Centre-4 (IIRC-4), Integral University, Lucknow 226026, India; Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow 226026, India
| | - Naushad Ahmad Khan
- Department of Surgery, Trauma and Vascular Surgery Clinical Research, Hamad General Hospital, Doha 3050, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Department of Biosciences, Integral University, Lucknow 226026, India; Animal Research Center, Qatar University, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar
| | - Abdul Q Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar.
| | - Martin Steinhoff
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Animal Research Center, Qatar University, Doha, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar; Department of Medicine, Weill Cornell Medicine Qatar, Qatar Foundation-Education City, Doha 24144, Qatar; Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA; College of Medicine, Qatar University, Doha 2713, Qatar
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Shah A, Huck I, Duncan K, Gansemer ER, Liu K, Adajar RC, Apte U, Stamnes MA, Rutkowski DT. Interference with the HNF4-dependent gene regulatory network diminishes endoplasmic reticulum stress in hepatocytes. Hepatol Commun 2023; 7:e0278. [PMID: 37820274 PMCID: PMC10578741 DOI: 10.1097/hc9.0000000000000278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 08/08/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND In all eukaryotic cell types, the unfolded protein response (UPR) upregulates factors that promote protein folding and misfolded protein clearance to help alleviate endoplasmic reticulum (ER) stress. Yet, ER stress in the liver is uniquely accompanied by the suppression of metabolic genes, the coordination and purpose of which are largely unknown. METHODS Here, we combined in silico machine learning, in vivo liver-specific deletion of the master regulator of hepatocyte differentiation HNF4α, and in vitro manipulation of hepatocyte differentiation state to determine how the UPR regulates hepatocyte identity and toward what end. RESULTS Machine learning identified a cluster of correlated genes that were profoundly suppressed by persistent ER stress in the liver. These genes, which encode diverse functions including metabolism, coagulation, drug detoxification, and bile synthesis, are likely targets of the master regulator of hepatocyte differentiation HNF4α. The response of these genes to ER stress was phenocopied by liver-specific deletion of HNF4α. Strikingly, while deletion of HNF4α exacerbated liver injury in response to an ER stress challenge, it also diminished UPR activation and partially preserved ER ultrastructure, suggesting attenuated ER stress. Conversely, pharmacological maintenance of hepatocyte identity in vitro enhanced sensitivity to stress. CONCLUSIONS Together, our findings suggest that the UPR regulates hepatocyte identity through HNF4α to protect ER homeostasis even at the expense of liver function.
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Affiliation(s)
- Anit Shah
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Ian Huck
- Department of Pharmacology, Toxicology, and Therapeutics, Kansas University Medical Center, Kansas City, Kansas, USA
| | - Kaylia Duncan
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Erica R. Gansemer
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Kaihua Liu
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Reed C. Adajar
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Udayan Apte
- Department of Pharmacology, Toxicology, and Therapeutics, Kansas University Medical Center, Kansas City, Kansas, USA
| | - Mark A. Stamnes
- Department of Molecular Physiology and Biophysics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - D. Thomas Rutkowski
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
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9
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Shah A, Huck I, Duncan K, Gansemer ER, Apte U, Stamnes MA, Rutkowski DT. Interference with the HNF4-dependent gene regulatory network diminishes ER stress in hepatocytes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.09.527889. [PMID: 36798396 PMCID: PMC9934629 DOI: 10.1101/2023.02.09.527889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
In all eukaryotic cell types, the unfolded protein response (UPR) upregulates factors that promote protein folding and misfolded protein clearance to help alleviate endoplasmic reticulum (ER) stress. Yet ER stress in the liver is uniquely accompanied by the suppression of metabolic genes, the coordination and purpose of which is largely unknown. Here, we used unsupervised machine learning to identify a cluster of correlated genes that were profoundly suppressed by persistent ER stress in the liver. These genes, which encode diverse functions including metabolism, coagulation, drug detoxification, and bile synthesis, are likely targets of the master regulator of hepatocyte differentiation HNF4α. The response of these genes to ER stress was phenocopied by liver-specific deletion of HNF4 α. Strikingly, while deletion of HNF4α exacerbated liver injury in response to an ER stress challenge, it also diminished UPR activation and partially preserved ER ultrastructure, suggesting attenuated ER stress. Conversely, pharmacological maintenance of hepatocyte identity in vitro enhanced sensitivity to stress. Several pathways potentially link HNF4α to ER stress sensitivity, including control of expression of the tunicamycin transporter MFSD2A; modulation of IRE1/XBP1 signaling; and regulation of Pyruvate Dehydrogenase. Together, these findings suggest that HNF4α activity is linked to hepatic ER homeostasis through multiple mechanisms.
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Affiliation(s)
- Anit Shah
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Ian Huck
- Department of Pharmacology, Toxicology, and Therapeutics, Kansas University Medical Center, Kansas City, KS
| | - Kaylia Duncan
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Erica R. Gansemer
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Udayan Apte
- Department of Pharmacology, Toxicology, and Therapeutics, Kansas University Medical Center, Kansas City, KS
| | - Mark A. Stamnes
- Department of Molecular Physiology and Biophysics, University of Iowa Carver College of Medicine, Iowa City, IA
| | - D. Thomas Rutkowski
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA
- Department of Fraternal Order of Eagles Diabetes Research Center, University of Iowa Carver College of Medicine, Iowa City, IA
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10
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Kant R, Manne RK, Anas M, Penugurti V, Chen T, Pan BS, Hsu CC, Lin HK. Deregulated transcription factors in cancer cell metabolisms and reprogramming. Semin Cancer Biol 2022; 86:1158-1174. [PMID: 36244530 PMCID: PMC11220368 DOI: 10.1016/j.semcancer.2022.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/10/2022] [Accepted: 10/11/2022] [Indexed: 01/27/2023]
Abstract
Metabolic reprogramming is an important cancer hallmark that plays a key role in cancer malignancies and therapy resistance. Cancer cells reprogram the metabolic pathways to generate not only energy and building blocks but also produce numerous key signaling metabolites to impact signaling and epigenetic/transcriptional regulation for cancer cell proliferation and survival. A deeper understanding of the mechanisms by which metabolic reprogramming is regulated in cancer may provide potential new strategies for cancer targeting. Recent studies suggest that deregulated transcription factors have been observed in various human cancers and significantly impact metabolism and signaling in cancer. In this review, we highlight the key transcription factors that are involved in metabolic control, dissect the crosstalk between signaling and transcription factors in metabolic reprogramming, and offer therapeutic strategies targeting deregulated transcription factors for cancer treatment.
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Affiliation(s)
- Rajni Kant
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Rajesh Kumar Manne
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Mohammad Anas
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Vasudevarao Penugurti
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Tingjin Chen
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Bo-Syong Pan
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Che-Chia Hsu
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA
| | - Hui-Kuan Lin
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, NC 27101, USA.
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11
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20(S)-ginsenoside Rh1 alleviates T2DM induced liver injury via the Akt/FOXO1 pathway. Chin J Nat Med 2022; 20:669-678. [DOI: 10.1016/s1875-5364(22)60201-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 11/18/2022]
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12
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Park M, Sharma A, Kang C, Han J, Tripathi KM, Lee HJ. N-Doped Carbon Nanorods from Biomass as a Potential Antidiabetic Nanomedicine. ACS Biomater Sci Eng 2022; 8:2131-2141. [PMID: 35476416 DOI: 10.1021/acsbiomaterials.1c01598] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Insufficient glucose control remains a critical challenge for type 2 diabetes mellitus (T2DM) patients with currently used therapeutic drugs, which can also have detrimental side effects. The facile synthesis of nitrogen-doped carbon nanorods (N-CNRs) as therapeutic agents in a T2DM transgenic db/db mouse model is reported herein. N-CNRs are synthesized from silkworm powder without the assistance of any template and possess a hollow graphitic nature, rough surface, and good aqueous solubility, which make them ideal candidates for fabricating nanomedicines. N-CNRs are employed to reduce fasting blood glucose and ameliorate serum biomarker levels linked to oxidative stress and inflammation. Interestingly, through the downregulation of enhanced expression of glutathione peroxidase, superoxide dismutase, and catalase as well as inflammatory responses, N-CNRs reverse pancreatic dysfunction and normalize the secretory functions of pancreatic cells. Moreover, hepatic steatosis is attenuated by downregulating lipogenesis and increasing fatty acid oxidation. This finding may help in designing novel therapeutics for T2DM treatment.
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Affiliation(s)
- Miey Park
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea
| | - Anshul Sharma
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea
| | - Chaewon Kang
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea
| | - Jinyoung Han
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea
| | - Kumud Malika Tripathi
- Department of Chemistry, Indian Institute of Petroleum and Energy, Visakhapatnam 530003, Andhra Pradesh, India
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea
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13
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Lin W, Wen X, Li X, Chen L, Wei W, Zhang L, Chen J. MiR-144 regulates adipogenesis by mediating formation of C/EBPα-FOXO1 protein complex. Biochem Biophys Res Commun 2022; 612:126-133. [PMID: 35525196 DOI: 10.1016/j.bbrc.2022.04.093] [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: 04/01/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 11/17/2022]
Abstract
CeRNA effect was an important regulation mode of miRNA mediated bio-activities, however, most of the researches of ceRNA were on ncRNAs synergetic with mRNAs, the exploration of ceRNA effect regulated mRNA interaction was still lack of. Besides, C/EBPα was one of the most crucial adipogenic regulators, which has been demonstrated to form a protein complex with FOXO1 to mediate AdipoQ expression. So that, we try to explore whether the ceRNA effect mediated the interaction of C/EBPα and FOXO1, and identified the key miRNAs of their ceRNA effect. In this paper, we found the ceRNA effect of C/EBPα and FOXO1 mediated their protein complex formation, furthermore regulated its transcriptional role for AdipoQ, thereby influencing pre-adipocytes adipogenesis. More importantly, we demonstrated that the miR-144 was the decisive factor that mediated the ceRNA effect of C/EBPα and FOXO1 to influence AdipoQ, thus regulated pre-adipocytes adipogenesis. This research will provide a new supplementary idea of the miRNA role in mediating coding RNA interaction that regulates pre-adipocyte adipogenesis.
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Affiliation(s)
- Weimin Lin
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Xianyu Wen
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Xuexin Li
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Lei Chen
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Wei Wei
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Lifan Zhang
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Jie Chen
- College of Animal Science & Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
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14
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Xu J, Hao S, Shi Q, Deng Q, Jiang Y, Guo P, Yuan Y, Shi X, Shangguan S, Zheng H, Lai G, Huang Y, Wang Y, Song Y, Liu Y, Wu L, Wang Z, Cheng J, Wei X, Cheng M, Lai Y, Volpe G, Esteban MA, Hou Y, Liu C, Liu L. Transcriptomic Profile of the Mouse Postnatal Liver Development by Single-Nucleus RNA Sequencing. Front Cell Dev Biol 2022; 10:833392. [PMID: 35465320 PMCID: PMC9019599 DOI: 10.3389/fcell.2022.833392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 03/11/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jiangshan Xu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Shijie Hao
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Quan Shi
- BGI-Shenzhen, Shenzhen, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Qiuting Deng
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Yujia Jiang
- BGI-Shenzhen, Shenzhen, China
- BGI College and Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Pengcheng Guo
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Yue Yuan
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Xuyang Shi
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Shuncheng Shangguan
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Joint School of Life Sciences, Guangzhou Medical University and Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Huiwen Zheng
- BGI-Shenzhen, Shenzhen, China
- BGI College and Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Guangyao Lai
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Joint School of Life Sciences, Guangzhou Medical University and Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | | | | | | | | | - Liang Wu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | | | - Jiehui Cheng
- Guangdong Hospital of Traditional Chinese Medicine, Zhuhai, China
| | | | - Mengnan Cheng
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Yiwei Lai
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Giacomo Volpe
- Hematology and Cell Therapy Unit, IRCCS-Istituto Tumori‘Giovanni Paolo II’, Bari, Italy
| | - Miguel A. Esteban
- BGI-Shenzhen, Shenzhen, China
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, China
| | | | | | - Longqi Liu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
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15
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Lee H, Kim Y, Kim S, Lim Y. Quamoclit angulata extract supplementation attenuates hepatic damage via regulation of AMPK/SIRT associated hepatic lipid metabolism in streptozotocin and high fat diet induced T2DM mice. Nutr Res 2022; 104:10-19. [DOI: 10.1016/j.nutres.2022.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 11/25/2022]
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16
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Oyabu M, Takigawa K, Mizutani S, Hatazawa Y, Fujita M, Ohira Y, Sugimoto T, Suzuki O, Tsuchiya K, Suganami T, Ogawa Y, Ishihara K, Miura S, Kamei Y. FOXO1 cooperates with C/EBPδ and ATF4 to regulate skeletal muscle atrophy transcriptional program during fasting. FASEB J 2022; 36:e22152. [DOI: 10.1096/fj.202101385rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022]
Affiliation(s)
- Mamoru Oyabu
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Kaho Takigawa
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Sako Mizutani
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Yukino Hatazawa
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Mariko Fujita
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Yuto Ohira
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Takumi Sugimoto
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
| | - Osamu Suzuki
- Laboratory of Animal Models for Human Diseases National Institutes of Biomedical Innovation, Health and Nutrition Osaka Japan
| | - Kyoichiro Tsuchiya
- Third Department of Internal Medicine Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Yamanashi Japan
| | - Takayoshi Suganami
- Department of Molecular Medicine and Metabolism Research Institute of Environmental Medicine Nagoya University Nagoya Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science Graduate School of Medical Sciences Kyushu University Fukuoka Japan
| | - Kengo Ishihara
- Department of Food Science and Human Nutrition Faculty of Agriculture Ryukoku University Shiga Japan
| | - Shinji Miura
- Graduate School of Nutritional and Environmental Sciences University of Shizuoka Shizuoka Japan
| | - Yasutomi Kamei
- Laboratory of Molecular Nutrition Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto Japan
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17
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Monica Shih MC, Huang CCJ, Chu HP, Hsu NC, Chung BC. Embryonic Steroids Control Developmental Programming of Energy Balance. Endocrinology 2021; 162:6380292. [PMID: 34599818 DOI: 10.1210/endocr/bqab196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Indexed: 12/25/2022]
Abstract
Glucose is a major energy source for growth. At birth, neonates must change their energy source from maternal supply to its own glucose production. The mechanism of this transition has not been clearly elucidated. To evaluate the possible roles of steroids in this transition, here we examine the defects associated with energy production of a mouse line that cannot synthesize steroids de novo due to the disruption of its Cyp11a1 (cytochrome P450 family 11 subfamily A member 1) gene. The Cyp11a1 null embryos had insufficient blood insulin and failed to store glycogen in the liver since embryonic day 16.5. Their blood glucose dropped soon after maternal deprivation, and the expression of hepatic gluconeogenic and glycogenic genes were reduced. Insulin was synthesized in the mutant fetal pancreas but failed to be secreted. Maternal glucocorticoid supply rescued the amounts of blood glucose, insulin, and liver glycogen in the fetus but did not restore expression of genes for glycogen synthesis, indicating the requirement of de novo glucocorticoid synthesis for glycogen storage. Thus, our investigation of Cyp11a1 null embryos reveals that the energy homeostasis is established before birth, and fetal steroids are required for the regulation of glycogen synthesis, hepatic gluconeogenesis, and insulin secretion at the fetal stage.
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Affiliation(s)
- Meng-Chun Monica Shih
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
- National Laboratory Animal Center, National Applied Research Laboratories, Taipei, Taiwan
| | - Chen-Che Jeff Huang
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
- College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Hsueh-Ping Chu
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
- Institute of Molecular and Cell Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Nai-Chi Hsu
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | - Bon-Chu Chung
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
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18
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Yang Z, Roth K, Agarwal M, Liu W, Petriello MC. The transcription factors CREBH, PPARa, and FOXO1 as critical hepatic mediators of diet-induced metabolic dysregulation. J Nutr Biochem 2021; 95:108633. [PMID: 33789150 PMCID: PMC8355060 DOI: 10.1016/j.jnutbio.2021.108633] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 01/31/2021] [Accepted: 03/09/2021] [Indexed: 02/06/2023]
Abstract
The liver is a critical mediator of lipid and/or glucose homeostasis and is a primary organ involved in dynamic changes during feeding and fasting. Additionally, hepatic-centric pathways are prone to dysregulation during pathophysiological states including metabolic syndrome (MetS) and non-alcoholic fatty liver disease. Omics platforms and GWAS have elucidated genes related to increased risk of developing MetS and related disorders, but mutations in these metabolism-related genes are rare and cannot fully explain the increasing prevalence of MetS-related pathologies worldwide. Complex interactions between diet, lifestyle, environmental factors, and genetic predisposition jointly determine inter-individual variability of disease risk. Given the complexity of these interactions, researchers have focused on master regulators of metabolic responses incorporating and mediating the impact of multiple environmental cues. Transcription factors are DNA binding, terminal executors of signaling pathways that modulate the cellular responses to complex metabolic stimuli and are related to the control of hepatic lipid and glucose homeostasis. Among numerous hepatic transcription factors involved in regulating metabolism, three emerge as key players in transducing nutrient sensing, which are dysregulated in MetS-related perturbations in both clinical and preclinical studies: cAMP Responsive Element Binding Protein 3 Like 3 (CREB3L3), Peroxisome Proliferator Activated Receptor Alpha (PPAR), and Forkhead Box O1 (FOXO1). Additionally, these three transcription factors appear to be amenable to dietary and/or nutrient-based therapies, being potential targets of nutritional therapy. In this review we aim to describe the activation, regulation, and impact of these transcription factors in the context of metabolic homeostasis. We also summarize their perspectives in MetS and nutritional therapies.
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Affiliation(s)
- Zhao Yang
- Institute of Environmental Health Sciences (IEHS), Wayne State University, Detroit, MI, USA
| | - Katherine Roth
- Institute of Environmental Health Sciences (IEHS), Wayne State University, Detroit, MI, USA
| | - Manisha Agarwal
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Wanqing Liu
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA; Department of Pharmaceutical Sciences, College of Pharmacy, Wayne State University, Detroit, MI, USA
| | - Michael C Petriello
- Institute of Environmental Health Sciences (IEHS), Wayne State University, Detroit, MI, USA; Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA.
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19
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Zhang C, Yang M. The Emerging Factors and Treatment Options for NAFLD-Related Hepatocellular Carcinoma. Cancers (Basel) 2021; 13:cancers13153740. [PMID: 34359642 PMCID: PMC8345138 DOI: 10.3390/cancers13153740] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/22/2021] [Accepted: 07/24/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease, and it is an increasing factor in the cause of hepatocellular carcinoma (HCC). The incidence of NAFLD has increased in recent decades, accompanied by an increase in the prevalence of other metabolic diseases, such as obesity and type 2 diabetes. However, current treatment options are limited. Both genetic factors and non-genetic factors impact the initiation and progression of NAFLD-related HCC. The early diagnosis of liver cancer predicts curative treatment and longer survival. Some key molecules play pivotal roles in the initiation and progression of NAFLD-related HCC, which can be targeted to impede HCC development. In this review, we summarize some key factors and important molecules in NAFLD-related HCC development, the latest progress in HCC diagnosis and treatment options, and some current clinical trials for NAFLD treatment. Abstract Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer, followed by cholangiocarcinoma (CCA). HCC is the third most common cause of cancer death worldwide, and its incidence is rising, associated with an increased prevalence of obesity and nonalcoholic fatty liver disease (NAFLD). However, current treatment options are limited. Genetic factors and epigenetic factors, influenced by age and environment, significantly impact the initiation and progression of NAFLD-related HCC. In addition, both transcriptional factors and post-transcriptional modification are critically important for the development of HCC in the fatty liver under inflammatory and fibrotic conditions. The early diagnosis of liver cancer predicts curative treatment and longer survival. However, clinical HCC cases are commonly found in a very late stage due to the asymptomatic nature of the early stage of NAFLD-related HCC. The development of diagnostic methods and novel biomarkers, as well as the combined evaluation algorithm and artificial intelligence, support the early and precise diagnosis of NAFLD-related HCC, and timely monitoring during its progression. Treatment options for HCC and NAFLD-related HCC include immunotherapy, CAR T cell therapy, peptide treatment, bariatric surgery, anti-fibrotic treatment, and so on. Overall, the incidence of NAFLD-related HCC is increasing, and a better understanding of the underlying mechanism implicated in the progression of NAFLD-related HCC is essential for improving treatment and prognosis.
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Affiliation(s)
- Chunye Zhang
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA;
| | - Ming Yang
- Department of Surgery, University of Missouri, Columbia, MO 65211, USA
- Correspondence:
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20
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Abstract
Forkhead box O (FOXO) transcription factors regulate diverse biological processes, affecting development, metabolism, stem cell maintenance and longevity. They have also been increasingly recognised as tumour suppressors through their ability to regulate genes essential for cell proliferation, cell death, senescence, angiogenesis, cell migration and metastasis. Mechanistically, FOXO proteins serve as key connection points to allow diverse proliferative, nutrient and stress signals to converge and integrate with distinct gene networks to control cell fate, metabolism and cancer development. In consequence, deregulation of FOXO expression and function can promote genetic disorders, metabolic diseases, deregulated ageing and cancer. Metastasis is the process by which cancer cells spread from the primary tumour often via the bloodstream or the lymphatic system and is the major cause of cancer death. The regulation and deregulation of FOXO transcription factors occur predominantly at the post-transcriptional and post-translational levels mediated by regulatory non-coding RNAs, their interactions with other protein partners and co-factors and a combination of post-translational modifications (PTMs), including phosphorylation, acetylation, methylation and ubiquitination. This review discusses the role and regulation of FOXO proteins in tumour initiation and progression, with a particular emphasis on cancer metastasis. An understanding of how signalling networks integrate with the FOXO transcription factors to modulate their developmental, metabolic and tumour-suppressive functions in normal tissues and in cancer will offer a new perspective on tumorigenesis and metastasis, and open up therapeutic opportunities for malignant diseases.
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Affiliation(s)
- Yannasittha Jiramongkol
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Eric W-F Lam
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK.
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Norambuena-Soto I, Ocaranza MP, Cancino-Arenas N, Sanhueza-Olivares F, Villar-Fincheira P, Leiva-Navarrete S, Mancilla-Medina C, Moya J, Novoa U, Jalil JE, Castro PF, Lavandero S, Chiong M. Angiotensin-(1-9) prevents vascular remodeling by decreasing vascular smooth muscle cell dedifferentiation through a FoxO1-dependent mechanism. Biochem Pharmacol 2020; 180:114190. [PMID: 32768401 DOI: 10.1016/j.bcp.2020.114190] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/29/2020] [Accepted: 08/03/2020] [Indexed: 12/30/2022]
Abstract
The renin-angiotensin system, one of the main regulators of vascular function, controls vasoconstriction, inflammation and vascular remodeling. Antagonistic actions of the counter-regulatory renin-angiotensin system, which include vasodilation, anti-proliferative, anti-inflammatory and anti-remodeling effects, have also been described. However, little is known about the direct effects of angiotensin-(1-9), a peptide of the counter-regulatory renin-angiotensin system, on vascular smooth muscle cells. Here, we studied the anti-vascular remodeling effects of angiotensin-(1-9), with special focus on the control of vascular smooth muscle cell phenotype. Angiotensin-(1-9) decreased blood pressure and aorta media thickness in spontaneously hypertensive rats. Reduction of media thickness was associated with decreased vascular smooth muscle cell proliferation. In the A7r5 VSMC cell line and in primary cultures of rat aorta smooth muscle cells, angiotensin-(1-9) did not modify basal proliferation. However, angiotensin-(1-9) inhibited proliferation, migration and contractile protein decrease induced by platelet derived growth factor-BB. Moreover, angiotensin-(1-9) reduced Akt and FoxO1 phosphorylation at 30 min, followed by an increase of total FoxO1 protein content. Angiotensin-(1-9) effects were blocked by the AT2R antagonist PD123319, Akt-Myr overexpression and FoxO1 siRNA. These data suggest that angiotensin-(1-9) inhibits vascular smooth muscle cell dedifferentiation by an AT2R/Akt/FoxO1-dependent mechanism.
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Affiliation(s)
- Ignacio Norambuena-Soto
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Maria Paz Ocaranza
- Division de Enfermedades Cardiovasculares, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Center of New Drugs for Hypertension (CENDHY), Universidad de Chile & Pontificia Universidad Católica de Chile, Santiago, Chile; Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nicole Cancino-Arenas
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Fernanda Sanhueza-Olivares
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Paulina Villar-Fincheira
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Sebastian Leiva-Navarrete
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Cristian Mancilla-Medina
- Division de Enfermedades Cardiovasculares, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Center of New Drugs for Hypertension (CENDHY), Universidad de Chile & Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jacqueline Moya
- Division de Enfermedades Cardiovasculares, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Center of New Drugs for Hypertension (CENDHY), Universidad de Chile & Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ulises Novoa
- Departamento de Ciencias Básicas Biomédicas, Facultad de Ciencias de la Salud, Universidad de Talca, Chile
| | - Jorge E Jalil
- Division de Enfermedades Cardiovasculares, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Center of New Drugs for Hypertension (CENDHY), Universidad de Chile & Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo F Castro
- Division de Enfermedades Cardiovasculares, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile; Corporacion Centro de Estudios Científicos de las Enfermedades Crónicas (CECEC), Santiago, Chile; Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, USA
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile.
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Li D, Yang Y, Sun L, Fang Z, Chen L, Zhao P, Wang Z, Guo Y. Effect of young apple (Malus domestica Borkh. cv. Red Fuji) polyphenols on alleviating insulin resistance. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100637] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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23
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Anti-diabetic effect by walnut (Juglans mandshurica Maxim.)-derived peptide LPLLR through inhibiting α-glucosidase and α-amylase, and alleviating insulin resistance of hepatic HepG2 cells. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103944] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Tissue-Specific Metabolic Regulation of FOXO-Binding Protein: FOXO Does Not Act Alone. Cells 2020; 9:cells9030702. [PMID: 32182991 PMCID: PMC7140670 DOI: 10.3390/cells9030702] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/17/2022] Open
Abstract
The transcription factor forkhead box (FOXO) controls important biological responses, including proliferation, apoptosis, differentiation, metabolism, and oxidative stress resistance. The transcriptional activity of FOXO is tightly regulated in a variety of cellular processes. FOXO can convert the external stimuli of insulin, growth factors, nutrients, cytokines, and oxidative stress into cell-specific biological responses by regulating the transcriptional activity of target genes. However, how a single transcription factor regulates a large set of target genes in various tissues in response to a variety of external stimuli remains to be clarified. Evidence indicates that FOXO-binding proteins synergistically function to achieve tightly controlled processes. Here, we review the elaborate mechanism of FOXO-binding proteins, focusing on adipogenesis, glucose homeostasis, and other metabolic regulations in order to deepen our understanding and to identify a novel therapeutic target for the prevention and treatment of metabolic disorders.
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Boughanem H, Cabrera-Mulero A, Millán-Gómez M, Garrido-Sánchez L, Cardona F, Tinahones FJ, Moreno-Santos I, Macías-González M. Transcriptional Analysis of FOXO1, C/EBP-α and PPAR-γ2 Genes and Their Association with Obesity-Related Insulin Resistance. Genes (Basel) 2019; 10:genes10090706. [PMID: 31547433 PMCID: PMC6770962 DOI: 10.3390/genes10090706] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/28/2019] [Accepted: 09/10/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Obesity is associated with several comorbid disorders, ranging from cardiovascular diseases to insulin resistance. In this context, visceral adipose tissue (VAT) seems to have a close connection with insulin resistance. In our study, we hypothesized that the expression profile of key adipogenic genes, such as proliferator-activated receptor γ type 2 (PPAR-γ2), CCAAT/enhancer-binding protein type α (C/EBP-α), and forkhead box protein class O type 1 (FOXO1) in VAT should shed light on their association with obesity-related insulin resistance. METHODS To test this idea, we studied the expression profile of C/EBP-α, FOXO1 and PPAR-γ2 in VAT from non-obese individuals, and low insulin (LIR-MO) and high insulin morbidly obese (HIR-MO) subjects, through a combination of RT-qPCR, co-immunoprecipitation, ELISA, Western blot analysis and EMSA assays. RESULTS Our results show that C/EBP-α and PPAR-γ2 were down-expressed in HIR-MO individuals, while FOXO1 was overexpressed. In addition, the PPAR-γ2-RXR-α heterodimer showed weak activity and bound weakly to the putative IGFBP-2-PPRE promoter sequence in VAT from HIR-MO subjects when compared with LIR-MO individuals. CONCLUSIONS These results show that PPAR-γ2, C/EBP-α, FOXO1 and IGFBP-2 have a close relationship with insulin resistance in VAT of morbidly obese individuals.
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Affiliation(s)
- Hatim Boughanem
- Biomedical Research Institute of Malaga (IBIMA), Faculty of Science, University of Malaga, 29010 Málaga, Spain.
| | - Amanda Cabrera-Mulero
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Mercedes Millán-Gómez
- CIBERCV (CIBER in cardiovascular diseases), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
- Unidad de Gestión Clínica Área del Corazón, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
| | - Lourdes Garrido-Sánchez
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Fernando Cardona
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Francisco José Tinahones
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Inmaculada Moreno-Santos
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
| | - Manuel Macías-González
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
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Chen Z, Wang J, Fan Z, Qiu J, Rumbani M, Yang X, Zhang H, Wang Z. Effects of polysaccharide from the fruiting bodies of Auricularia auricular on glucose metabolism in 60Co-γ-radiated mice. Int J Biol Macromol 2019; 135:887-897. [DOI: 10.1016/j.ijbiomac.2019.05.136] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/12/2019] [Accepted: 05/21/2019] [Indexed: 11/25/2022]
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27
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Zhang R, Wang X, Zhang X, Zhang J, Zhang X, Shi X, Crump D, Letcher RJ, Giesy JP, Liu C. Down-Regulation of hspb9 and hspb11 Contributes to Wavy Notochord in Zebrafish Embryos Following Exposure to Polychlorinated Diphenylsulfides. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:12829-12840. [PMID: 30335980 DOI: 10.1021/acs.est.8b04487] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It is hypothesized that key genes, other than ahr2, are present and associated with the development of a unique type of notochord malformation known as wavy notochord in early life stages of zebrafish following exposure to polychlorinated diphenylsulfides (PCDPSs). To investigate the potential mechanism(s), time-dependent developmental morphologies of zebrafish embryos following exposure to 2500 nM 2,4,4',5-tetra-CDPS, 2,2',4-tri-CDPS or 4,4'-di-CDPS were observed to determine the developmental time point when notochord twists began to occur (i.e., 21 h-postfertilization (hpf)). Simultaneously, morphometric measurements suggested that PCDPS exposure did not affect notochord growth at 21 or 120 hpf; however, elongation of the body axis was significantly inhibited at 120 hpf. Transcriptome analysis revealed that the retardation of body growth was potentially related with dysregulation of transcripts predominantly associated with the insulin-associated Irs-Akt-FoxO cascade. Moreover, knockdown and gain-of-function experiments in vivo on codifferentially expressed genes demonstrated that reduced expression of hspb9 and hspb11 contributed to the occurrence of wavy notochord. The results of this study strongly support the hypothesis that the notochord kinks and twists are triggered by the down-regulation of hspb9 and hspb11, and intensified by body growth retardation along with normal notochord length in PCDPS-exposed zebrafish embryos.
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Affiliation(s)
- Rui Zhang
- School of Resources and Environment , University of Jinan , Jinan 250022 , P. R. China
| | - Xiaoxiang Wang
- State Key Laboratory of Pollution Control and Resources Reuse , School of the Environment, Nanjing University , Nanjing 210023 , P. R. China
- Association of Chinese Chemists and Chemical Engineers in Germany , Limburgerhof 67117 , Germany
| | - Xuesheng Zhang
- School of Resources and Environmental Engineering , Anhui University , Hefei 230601 , P. R. China
| | - Junjiang Zhang
- State Key Laboratory of Pollution Control and Resources Reuse , School of the Environment, Nanjing University , Nanjing 210023 , P. R. China
| | - Xiaowei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse , School of the Environment, Nanjing University , Nanjing 210023 , P. R. China
| | - Xiao Shi
- Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Nanfang Hospital , Southern Medical University , Guangzhou 510515 , P. R. China
| | - Doug Crump
- Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, National Wildlife Research Centre , Carleton University , 1125 Colonel By Drive , Ottawa , K1A 0H3 , Canada
| | - Robert J Letcher
- Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, National Wildlife Research Centre , Carleton University , 1125 Colonel By Drive , Ottawa , K1A 0H3 , Canada
| | - John P Giesy
- Department of Veterinary Biomedical Sciences and Toxicology Centre , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5B3 , Canada
| | - Chunsheng Liu
- College of Fisheries , Huazhong Agricultural University , Wuhan 430070 , P. R. China
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28
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Schill D, Nord J, Cirillo LA. FoxO1 and FoxA1/2 form a complex on DNA and cooperate to open chromatin at insulin-regulated genes. Biochem Cell Biol 2018; 97:118-129. [PMID: 30142277 DOI: 10.1139/bcb-2018-0104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
We have previously shown that cooperative, interdependent binding by the pioneer factors FoxO1 and FoxA1/2 is required for recruitment of RNA polymerase II and H3K27 acetylation to the promoters of insulin-regulated genes. However, the underlying mechanisms are unknown. In this study, we demonstrate that, in HepG2 cells, FoxO1 and FoxA2 form a complex on DNA that is disrupted by insulin treatment. Insulin-mediated phosphorylation of FoxO1 and FoxA2 does not impair their cooperative binding to mononucleosome particles assembled from the IGFBP1 promoter, indicating that direct disruption of complex formation by phosphorylation is not responsible for the loss of interdependent FoxO1:FoxA1/2 binding following insulin treatment. Since FoxO1 and FoxA1/2 binding is required for the establishment and maintenance of transcriptionally active chromatin at insulin-regulated genes, we hypothesized that cooperative FoxO1 and FoxA1/2 binding dictates the chromatin remodeling events required for the initial activation of these genes. In support of this idea, we demonstrate that FoxO1 and FoxA2 cooperatively open linker histone compacted chromatin templates containing the IGFBP1 promoter. Taken together, these results provide a mechanism for how interdependent FoxO1:FoxA1/2 binding is negatively impacted by insulin and provide a developmental context for cooperative gene activation by these factors.
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Affiliation(s)
- Daniel Schill
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.,Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Joshua Nord
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.,Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Lisa Ann Cirillo
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.,Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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van Ooijen H, Hornsveld M, Dam-de Veen C, Velter R, Dou M, Verhaegh W, Burgering B, van de Stolpe A. Assessment of Functional Phosphatidylinositol 3-Kinase Pathway Activity in Cancer Tissue Using Forkhead Box-O Target Gene Expression in a Knowledge-Based Computational Model. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1956-1972. [PMID: 30030980 DOI: 10.1016/j.ajpath.2018.05.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 04/24/2018] [Accepted: 05/22/2018] [Indexed: 12/15/2022]
Abstract
The phosphatidylinositol 3-kinase (PI3K) pathway is commonly activated in cancer. Tumors are potentially sensitive to PI3K pathway inhibitors, but reliable diagnostic tests that assess functional PI3K activity are lacking. Because PI3K pathway activity negatively regulates forkhead box-O (FOXO) transcription factor activity, FOXO target gene expression is inversely correlated with PI3K activity. A knowledge-based Bayesian computational model was developed to infer PI3K activity in cancer tissue samples from FOXO target gene mRNA levels and validated in cancer cell lines treated with PI3K inhibitors. However, applied to patient tissue samples, FOXO was often active in cancer types with expected active PI3K. SOD2 was differentially expressed between FOXO-active healthy and cancer tissue samples, indicating that cancer-associated cellular oxidative stress alternatively activated FOXO. To enable correct interpretation of active FOXO in cancer tissue, threshold levels for normal SOD2 expression in healthy tissue were defined above which FOXO activity is oxidative stress induced and below which PI3K regulated. In slow-growing luminal A breast cancer and low Gleason score prostate cancer, FOXO was active in a PI3K-regulated manner, indicating inactive PI3K. In aggressive luminal B, HER2, and basal breast cancer, FOXO was increasingly inactive or actively induced by oxidative stress, indicating PI3K activity. We provide a decision tree that facilitates functional PI3K pathway activity assessment in tissue samples from patients with cancer for therapy response prediction and prognosis.
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Affiliation(s)
| | | | | | - Rick Velter
- Philips Research, Eindhoven, the Netherlands
| | - Meng Dou
- Philips Research, Eindhoven, the Netherlands
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30
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Hou Y, Fu L, Li J, Li J, Zhao Y, Luan Y, Liu A, Liu H, Li X, Zhao S, Li C. Transcriptome Analysis of Potential miRNA Involved in Adipogenic Differentiation of C2C12 Myoblasts. Lipids 2018; 53:375-386. [DOI: 10.1002/lipd.12032] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 02/08/2018] [Accepted: 02/09/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Ye Hou
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Liangliang Fu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Jingjin Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Jingxuan Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Yunxia Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Yu Luan
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - An Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Huiying Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Xinyun Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Shuhong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
| | - Changchun Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Sciences and Technology; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District; Wuhan Hubei Province 430070 China
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Yan J, Wang C, Jin Y, Meng Q, Liu Q, Liu Z, Liu K, Sun H. Catalpol ameliorates hepatic insulin resistance in type 2 diabetes through acting on AMPK/NOX4/PI3K/AKT pathway. Pharmacol Res 2018; 130:466-480. [DOI: 10.1016/j.phrs.2017.12.026] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 12/11/2017] [Accepted: 12/22/2017] [Indexed: 12/23/2022]
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Ren Z, Xie Z, Cao D, Gong M, Yang L, Zhou Z, Ou Y. C-Phycocyanin inhibits hepatic gluconeogenesis and increases glycogen synthesis via activating Akt and AMPK in insulin resistance hepatocytes. Food Funct 2018; 9:2829-2839. [DOI: 10.1039/c8fo00257f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The mechanism of C-PC in improving glucose homoeostasis is to activate the IRS/PI3 K/Akt and SIRT1/LKB1/AMPK signaling pathway in insulin resistant hepatocytes.
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Affiliation(s)
- Zhiheng Ren
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Zhifei Xie
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Danni Cao
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Mufeng Gong
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Lei Yang
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Zhu Zhou
- Department of Pharmaceutics and Medicinal Chemistry
- University of the Pacific
- Stockton 95211CA
- USA
| | - Yu Ou
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
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Yan F, Yang Y, Yu L, Zheng X. Effects of C-Glycosides from Apios americana Leaves against Oxidative Stress during Hyperglycemia through Regulating Mitogen-Activated Protein Kinases and Nuclear Factor Erythroid 2-Related Factor 2. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7457-7466. [PMID: 28758742 DOI: 10.1021/acs.jafc.7b03163] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Main components of Apios americana leaves extract (ALE) were flavonoid C-glycosides, including vitexin (46.7%), schaftoside (18.9%), and orientin (4.32%). In vitro, ALE restored glucose consumption, glucose uptake, and glycogen content in glucose-induced hepatic cells. Exposure of HepG2 cells to high glucose resulted in reactive oxygen species and O2- accumulation, while ALE alleviated these increases by 47 ± 0.68 and 68 ± 0.74%, respectively. Glucose increased c-Jun N-terminal kinase (JNK) and decreased extracellular signal-regulated kinases 1 and 2 (ERK1/2) and p38 phosphorylation, while ALE reduced p-JNK and p-p38 but not p-ERK1/2, accompanied by nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1, and NAD(P)H quinine oxidoreductase 1 downregulation. In vivo, the lifespan of Caenorhabditis elegans was more violently shortened by paraquat under hyperglycemia, while ALE protected this damage in N2 worms (2.6 times extension) but not in daf-16 mutants. Furthermore, p38/PMK-1 and Nrf2/SKN-1 expressions in worms were suppressed by glucose, which were reversed by ALE treatment. These results suggest that ALE prevents glucose-induced damage via regulating specific mitogen-activated protein kinases and Nrf2 pathways.
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Affiliation(s)
- Fujie Yan
- Department of Food Science and Nutrition, ‡Zhejiang Key Laboratory for Agro-food Processing, and §Fuli Institute of Food Science, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yunyun Yang
- Department of Food Science and Nutrition, ‡Zhejiang Key Laboratory for Agro-food Processing, and §Fuli Institute of Food Science, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Lushuang Yu
- Department of Food Science and Nutrition, ‡Zhejiang Key Laboratory for Agro-food Processing, and §Fuli Institute of Food Science, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, ‡Zhejiang Key Laboratory for Agro-food Processing, and §Fuli Institute of Food Science, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
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Link W, Fernandez-Marcos PJ. FOXO transcription factors at the interface of metabolism and cancer. Int J Cancer 2017. [PMID: 28631330 DOI: 10.1002/ijc.30840] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diabetes refers to a group of metabolic diseases characterized by impaired insulin signalling and high blood glucose. A growing body of epidemiological evidence links diabetes to several types of cancer but the underlying molecular mechanisms are poorly understood. The signalling cascade connecting insulin and FOXO proteins provides a compelling example for a conserved pathway at the interface between insulin signalling and cancer. FOXOs are transcription factors that orchestrate programs of gene expression known to control a variety of processes in response to cellular stress. Genes regulated by this family of proteins are involved in the regulation of cellular energy production, oxidative stress resistance and cell viability and proliferation. Accordingly, FOXO factors have been shown to play an important role in the suppression of tumour growth and in the regulation of metabolic homeostasis. There is emerging evidence that deregulation of FOXO factors might account for the association between insulin resistance-related metabolic disorders and cancer.
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Affiliation(s)
- Wolfgang Link
- Centre for Biomedical Research (CBMR), University of Algarve, Campus of Gambelas, Building 8, room 2.22, Faro, 8005-139, Portugal.,Regenerative Medicine Program, Department of Biomedical Sciences and Medicine, University of Algarve, Campus de Gambelas, Faro, 8005-139, Portugal.,Algarve Biomedical Center (ABC), University of Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
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Mulberry Anthocyanin Extract Ameliorates Oxidative Damage in HepG2 Cells and Prolongs the Lifespan of Caenorhabditis elegans through MAPK and Nrf2 Pathways. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7956158. [PMID: 28713491 PMCID: PMC5497675 DOI: 10.1155/2017/7956158] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/31/2017] [Accepted: 05/11/2017] [Indexed: 12/20/2022]
Abstract
Mulberry anthocyanins possess many pharmacological effects including liver protection, anti-inflammation, and anticancer. The aim of this study was to evaluate whether mulberry anthocyanin extract (MAE) exerts beneficial effects against oxidative stress damage in HepG2 cells and Caenorhabditis elegans. In vitro, MAE prevented cytotoxicity, increased glucose consumption and uptake, and eliminated excessive intracellular free radicals in H2O2-induced cells. Moreover, MAE pretreatment maintained Nrf2, HO-1, and p38 MAPK stimulation and abolished upregulation of p-JNK, FOXO1, and PGC-1α that were involved in oxidative stress and insulin signalling modulation. In vivo, extended lifespan was observed in C. elegans damaged by paraquat in the presence of MAE, while these beneficial effects were disappeared in pmk-1 and daf-16 mutants. PMK-1 and SKN-1 were activated after exposure to paraquat and MAE suppressed PMK-1 activation but enhanced SKN-1 stimulation. Our findings suggested that MAE recovered redox status in HepG2 cells and C. elegans that suffered from oxidative stress, which might be by targeting MAPKs and Nrf2.
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Abstract
Here, we describe a protocol to develop a three-dimensional (3D) liver bud-like tissue from human iPSCs in vitro. This method mainly consists of two parts: (1) hepatic endoderm (HE) differentiation from human iPSCs in 2D culture and (2) co-culturing iPSC-HE with endothelial and mesenchymal cells. First, iPSCs were differentiated into definitive endoderm (DE) cells, and the DE cells were differentiated into HE cells, which were then co-cultured with endothelial cells and mesenchymal cells on Matrigel-coated plastic plates or micropattern plates. The cells rapidly condensed to generate 3D tissue masses. We named these iPSC liver buds (iPSC-LBs) because they resemble the developing liver bud from the perspective of gene expression, cell proliferation, and cell proportion. This liver bud culture system provides a novel approach for future clinical applications, for drug development, and as a tool for studying human development.
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Affiliation(s)
- Keisuke Sekine
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa, 236-0004, Japan
| | - Takanori Takebe
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa, 236-0004, Japan
- Advanced medical research center, Yokohama City University, Kanazawa-ku 3-9, Yokohama, Kanagawa, 236-0004, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi, Saitama, 332-0012, Japan
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH, 45229-3039, USA
| | - Hideki Taniguchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa, 236-0004, Japan.
- Advanced medical research center, Yokohama City University, Kanazawa-ku 3-9, Yokohama, Kanagawa, 236-0004, Japan.
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Yan F, Zhang J, Zhang L, Zheng X. Mulberry anthocyanin extract regulates glucose metabolism by promotion of glycogen synthesis and reduction of gluconeogenesis in human HepG2 cells. Food Funct 2016; 7:425-33. [PMID: 26467565 DOI: 10.1039/c5fo00841g] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mulberry has been demonstrated to possess important biological activities such as antioxidation and antiinflammation. However, research on the ability of mulberry for diabetes improvement mainly focuses on the leaves and less on the fruit. This study showed that a mulberry anthocyanin extract (MAE) had a significant effect on increasing the glucose consumption in HepG2 cells. The MAE enhanced the glycogen content and suppressed levels of glucose production. The enzyme activities of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) were decreased in HepG2 cells after MAE treatment due to PPARγ coactivator 1α (PGC-1α) and forkhead box protein O1 (FOXO1) inhibition. Moreover, the phosphorylation of protein kinase B (AKT) and glycogen synthase kinase-3β (GSK-3β) was increased by the MAE, leading to an expression enhancement of glycogen synthase 2 (GYS2). And this effect was blocked by the phosphoinositide 3-kinase (PI3K) inhibitor LY294002. In summary, our results suggested that the MAE regulates glucose metabolism by activating the PI3K/AKT pathway that relates to glycogen synthesis as well as through the inhibition of key molecules that promote gluconeogenesis.
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Affiliation(s)
- Fujie Yan
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, People's Republic of China. and Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Ji Zhang
- Biology Lab Center, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Lingxia Zhang
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, People's Republic of China. and Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, People's Republic of China. and Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China
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Yan F, Dai G, Zheng X. Mulberry anthocyanin extract ameliorates insulin resistance by regulating PI3K/AKT pathway in HepG2 cells and db/db mice. J Nutr Biochem 2016; 36:68-80. [PMID: 27580020 DOI: 10.1016/j.jnutbio.2016.07.004] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/30/2016] [Accepted: 07/05/2016] [Indexed: 12/18/2022]
Abstract
This study evaluated the capacity of mulberry anthocyanin extract (MAE) on insulin resistance amelioration in HepG2 cells induced by high glucose and palmitic acid and diabetes-related metabolic changes in type 2 diabetic mice. In vitro, MAE alleviated insulin resistance in HepG2 cells and increased glucose consumption, glucose uptake and glycogen content. Enzyme activities of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) were decreased due to PPARγ coactivator 1α (PGC-1α) and forkhead box protein O1 (FOXO1) inhibition. Furthermore, phosphorylation of protein kinase B (AKT) and glycogen synthase kinase-3β (GSK3β) in model cells was recovered after treated with MAE, leading to an up-regulation of glycogen synthase 2 (GYS2), and this effect was blocked by the phosphatidylinositol-3-kinase (PI3K) inhibitor LY294002. In vivo, MAE supplementation (50 and 125 mg/kg body weight per day) markedly decreased fasting blood glucose, serum insulin, leptin, triglyceride and cholesterol levels and increased adiponectin levels in db/db mice. The improvement of related metabolic parameters was in part associated with the impact of MAE on activating AKT and downstream targets in liver, skeletal muscle and adipose tissues. In summary, these findings suggest that MAEs have potential benefits on improving dysfunction in diabetic mice and mitigating insulin resistance in HepG2 cells via activation of PI3K/AKT pathways.
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Affiliation(s)
- Fujie Yan
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, People's Republic of China; Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Guanhai Dai
- Institute of Basic Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, People's Republic of China; Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, People's Republic of China.
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Matrix metalloproteinase 11 protects from diabesity and promotes metabolic switch. Sci Rep 2016; 6:25140. [PMID: 27126782 PMCID: PMC4850390 DOI: 10.1038/srep25140] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/11/2016] [Indexed: 12/31/2022] Open
Abstract
MMP11 overexpression is a bad prognostic factor in various human carcinomas. Interestingly, this proteinase is not expressed in malignant cells themselves but is secreted by adjacent non-malignant mesenchymal/stromal cells, such as cancer associated fibroblasts (CAFs) and adipocytes (CAAs), which favors cancer cell survival and progression. As MMP11 negatively regulates adipogenesis in vitro, we hypothesized that it may play a role in whole body metabolism and energy homeostasis. We used an in vivo gain- (Mmp11-Tg mice) and loss- (Mmp11−/− mice) of-function approach to address the systemic function of MMP11. Strikingly, MMP11 overexpression protects against type 2 diabetes while Mmp11−/− mice exhibit hallmarks of metabolic syndrome. Moreover, Mmp11-Tg mice were protected from diet-induced obesity and display mitochondrial dysfunction, due to oxidative stress, and metabolic switch from oxidative phosphorylation to aerobic glycolysis. This Warburg-like effect observed in adipose tissues might provide a rationale for the deleterious impact of CAA-secreted MMP11, favouring tumor progression. MMP11 overexpression also leads to increased circulating IGF1 levels and the activation of the IGF1/AKT/FOXO1 cascade, an important metabolic signalling pathway. Our data reveal a major role for MMP11 in controlling energy metabolism, and provide new clues for understanding the relationship between metabolism, cancer progression and patient outcome.
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40
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Chen Q, Lu M, Monks BR, Birnbaum MJ. Insulin Is Required to Maintain Albumin Expression by Inhibiting Forkhead Box O1 Protein. J Biol Chem 2015; 291:2371-8. [PMID: 26668316 DOI: 10.1074/jbc.m115.677351] [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: 07/06/2015] [Indexed: 01/07/2023] Open
Abstract
Diabetes is accompanied by dysregulation of glucose, lipid, and protein metabolism. In recent years, much effort has been spent on understanding how insulin regulates glucose and lipid metabolism, whereas the effect of insulin on protein metabolism has received less attention. In diabetes, hepatic production of serum albumin decreases, and it has been long established that insulin positively controls albumin gene expression. In this study, we used a genetic approach in mice to identify the mechanism by which insulin regulates albumin gene transcription. Albumin expression was decreased significantly in livers with insulin signaling disrupted by ablation of the insulin receptor or Akt. Concomitant deletion of Forkhead Box O1 (Foxo1) in these livers rescued the decreased albumin secretion. Furthermore, activation of Foxo1 in the liver is sufficient to suppress albumin expression. These results suggest that Foxo1 acts as a repressor of albumin expression.
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Affiliation(s)
- Qing Chen
- From the Institute for Diabetes, Obesity, and Metabolism, Department of Biochemistry and Biophysics, and Graduate Group of Biochemistry and Molecular Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104 and
| | - Mingjian Lu
- From the Institute for Diabetes, Obesity, and Metabolism
| | - Bobby R Monks
- From the Institute for Diabetes, Obesity, and Metabolism
| | - Morris J Birnbaum
- From the Institute for Diabetes, Obesity, and Metabolism, Department of Biochemistry and Biophysics, and Graduate Group of Biochemistry and Molecular Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104 and the Cardiovascular and Metabolic Disease Research Unit, Pfizer Inc., Cambridge, Massachusetts 02140
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41
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Lu H, Lei X, Zhang Q. Moderate activation of IKK2-NF-kB in unstressed adult mouse liver induces cytoprotective genes and lipogenesis without apparent signs of inflammation or fibrosis. BMC Gastroenterol 2015. [PMID: 26219821 PMCID: PMC4518658 DOI: 10.1186/s12876-015-0325-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background The NF-kB signaling, regulated by IKK1-p52/RelB and IKK2-p65, is activated by various stresses to protect or damage the liver, in context-specific manners. Two previous studies of liver-specific expression of constitutive active IKK2 (IKK2ca) showed that strong activation of IKK2-NF-kB in mouse livers caused inflammation, insulin resistance, and/or fibrosis. The purpose of this study was to understand how moderate activation of IKK2-NF-kB in adult mouse livers alters hepatic gene expression and pathophysiology. Method We generated mice with adult hepatocyte-specific activation of Ikk2 (Liv-Ikk2ca) using Alb-cre mice and Ikk2ca Rosa26 knockin mice in which a moderate expression of Ikk2ca transgene was driven by the endogenous Rosa26 promoter. Results Surprisingly, compared to wild-type mice, adult male Liv-Ikk2ca mice had higher hepatic mRNA expression of Ikk2 and classical NF-kB targets (e.g. Lcn2 and A20), as well as IKK1, NIK, and RelB, but no changes in markers of inflammation or fibrosis. Blood levels of IL-6 and MCP-1 remained unchanged, and histology analysis showed a lack of injury or infiltration of inflammatory cells in livers of Liv-Ikk2ca mice. Moreover, Liv-Ikk2ca mice had lower mRNA expression of prooxidative enzymes Cyp2e1 and Cyp4a14, higher expression of antioxidative enzymes Sod2, Gpx1, and Nqo1, without changes in key enzymes for fatty acid oxidation, glucose utilization, or gluconeogenesis. In parallel, Liv-Ikk2ca mice and wild-type mice had similar levels of hepatic reduced glutathione, endogenous reactive oxygen species, and lipid peroxidation. Additionally, Liv-Ikk2ca mice had higher Cyp3a11 without down-regulation of most drug processing genes. Regarding nuclear proteins of NF-kB subunits, Liv-Ikk2ca mice had moderately higher p65 and p50 but much higher RelB. Results of ChIP-qPCR showed that the binding of p50 to multiple NF-kB-target genes was markedly increased in Liv-Ikk2ca mice. Additionally, Liv-Ikk2ca mice had moderate increase in triglycerides in liver, which was associated with higher lipogenic factors Pparγ, Lxr, Fasn, Scd1, and CD36. Conclusion In summary, moderate activation of IKK2-NF-kB in unstressed adult mouse hepatocytes produces a cytoprotective gene expression profile and induces lipogenesis without apparent signs of inflammation or fibrosis, likely due to strong activation of the anti-inflammatory IKK1-RelB alternative NF-kB pathway as well as the Lxr. Electronic supplementary material The online version of this article (doi:10.1186/s12876-015-0325-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hong Lu
- Department of Pharmacology, SUNY Upstate Medical University, 750 E Adams ST, Syracuse, NY, 13210, USA.
| | - Xiaohong Lei
- Department of Pharmacology, SUNY Upstate Medical University, 750 E Adams ST, Syracuse, NY, 13210, USA.
| | - Qinghao Zhang
- Department of Pharmacology, SUNY Upstate Medical University, 750 E Adams ST, Syracuse, NY, 13210, USA.
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Ehara T, Kamei Y, Yuan X, Takahashi M, Kanai S, Tamura E, Tsujimoto K, Tamiya T, Nakagawa Y, Shimano H, Takai-Igarashi T, Hatada I, Suganami T, Hashimoto K, Ogawa Y. Ligand-activated PPARα-dependent DNA demethylation regulates the fatty acid β-oxidation genes in the postnatal liver. Diabetes 2015; 64:775-84. [PMID: 25311726 DOI: 10.2337/db14-0158] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The metabolic function of the liver changes sequentially during early life in mammals to adapt to the marked changes in nutritional environment. Accordingly, hepatic fatty acid β-oxidation is activated after birth to produce energy from breast milk lipids. However, how it is induced during the neonatal period is poorly understood. Here we show DNA demethylation and increased mRNA expression of the fatty acid β-oxidation genes in the postnatal mouse liver. The DNA demethylation does not occur in the fetal mouse liver under the physiologic condition, suggesting that it is specific to the neonatal period. Analysis of mice deficient in the nuclear receptor peroxisome proliferator-activated receptor α (PPARα) and maternal administration of a PPARα ligand during the gestation and lactation periods reveal that the DNA demethylation is PPARα dependent. We also find that DNA methylation of the fatty acid β-oxidation genes are reduced in the adult human liver relative to the fetal liver. This study represents the first demonstration that the ligand-activated PPARα-dependent DNA demethylation regulates the hepatic fatty acid β-oxidation genes during the neonatal period, thereby highlighting the role of a lipid-sensing nuclear receptor in the gene- and life-stage-specific DNA demethylation of a particular metabolic pathway.
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Affiliation(s)
- Tatsuya Ehara
- Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan Nutrition Research Department, Nutritional Science Institute, Morinaga Milk Industry Co. Ltd., Zama, Kanagawa, Japan
| | - Yasutomi Kamei
- Department of Organ Network and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Xunmei Yuan
- Department of Organ Network and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Mayumi Takahashi
- Department of Organ Network and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Sayaka Kanai
- Department of Organ Network and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Erina Tamura
- Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Kazutaka Tsujimoto
- Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Takashi Tamiya
- Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yoshimi Nakagawa
- Department of Internal Medicine (Metabolism and Endocrinology), Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hitoshi Shimano
- Department of Internal Medicine (Metabolism and Endocrinology), Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Takako Takai-Igarashi
- Department of Health Record Informatics, Tohoku Medical Megabank Organization, Aoba-ku, Sendai, Miyagi, Japan
| | - Izuho Hatada
- Genome Science, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Takayoshi Suganami
- Department of Organ Network and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan Japan Science and Technology Agency, PRESTO, Goban-cho Chiyoda-ku, Tokyo, Japan
| | - Koshi Hashimoto
- Department of Preemptive Medicine and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yoshihiro Ogawa
- Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Sekine K, Takebe T, Taniguchi H. Fluorescent labeling and visualization of human induced pluripotent stem cells with the use of transcription activator-like effector nucleases. Transplant Proc 2015; 46:1205-7. [PMID: 24815161 DOI: 10.1016/j.transproceed.2014.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 01/31/2014] [Accepted: 02/11/2014] [Indexed: 01/24/2023]
Abstract
BACKGROUND The visualization of induced pluripotent stem (iPS) cells with the use of fluorescent techniques is useful for the in vivo evaluation of iPS-derived functional cells following differentiation and distribution of the transplanted cells. The data obtained from the fluorescently labeled iPS cells would lead to amelioration and validation of protocols directing the differentiation of iPS cells into functional cells. In this study, we established enhanced green fluorescent protein (EGFP)-labeled iPS cells to enable their easy visualization. METHODS Human iPS cells were transfected with (a) 2 transcription activator-like effector nuclease (TALEN) vectors targeted to the adeno-associated virus integration site 1 (AAVS1) locus and (b) the targeting vector carrying the homology arms, EGFP gene, and a drug-selection marker. RESULTS Several puromycin-resistant clones were obtained after transfection of the targeting vector and corresponding TALEN-expressing vectors. EGFP expression in these clones was observed with the use of a fluorescent microscope. Clones were examined for specific recombination, which revealed precise targeting at the AAVS1 locus. Furthermore, EGFP protein expression was sustained after directed differentiation into a hepatic lineage. CONCLUSIONS We were successful in evaluating the behavior of iPS-derived hepatic cells. The data suggest that genomic knock-in at the AAVS1 locus is suitable for long-term observation of iPS-derived cells. Manipulation of the iPS genome can also be applied for the purification of hepatic cells during iPS cell differentiation by introducing the fluorescent protein under the regulation of a hepatic cell-specific promoter. Another application involves gene correction of iPS cells from patients with hepatic disease for regenerative medicine.
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Affiliation(s)
- K Sekine
- Department of Regenerative Medicine, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - T Takebe
- Department of Regenerative Medicine, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - H Taniguchi
- Department of Regenerative Medicine, Graduate School of Medicine, Yokohama City University, Yokohama, Japan.
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McGill-Vargas LL, Johnson-Pais T, Johnson MC, Blanco CL. Developmental regulation of key gluconeogenic molecules in nonhuman primates. Physiol Rep 2014; 2:2/12/e12243. [PMID: 25524279 PMCID: PMC4332221 DOI: 10.14814/phy2.12243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aberrant glucose regulation is common in preterm and full‐term neonates leading to short and long‐term morbidity/mortality; however, glucose metabolism in this population is understudied. The aim of this study was to investigate developmental differences in hepatic gluconeogenic pathways in fetal/newborn baboons. Fifteen fetal baboons were delivered at 125 day (d) gestational age (GA), 140d GA, and 175d GA (term = 185d GA) via cesarean section and sacrificed at birth. Term and healthy adult baboons were used as controls. Protein content and gene expression of key hepatic gluconeogenic molecules were measured: cytosolic and mitochondrial phosphoenolpyruvate carboxykinase (PEPCK‐C and PEPCK‐M), glucose‐6‐phosphatase‐alpha (G6Pase‐α), G6Pase‐β, fructose‐1,6‐bisphosphatase (FBPase), and forkhead box‐O1 (FOXO1). Protein content of PEPCK‐M increased with advancing gestation in fetal baboons (9.6 fold increase from 125d GA to 175d GA, P < 0.001). PEPCK‐C gene expression was consistent with these developmental differences. Phosphorylation of FOXO1 was significantly lower in preterm fetal baboons compared to adults, and gene expression of FOXO1 was lower in all neonates when compared to adults (10% and 62% of adults respectively, P < 0.05). The FOXO1 target gene G6Pase expression was higher in preterm animals compared to term animals. No significant differences were found in G6Pase‐α, G6Pase‐β, FOXO1, and FBPase during fetal development. In conclusion, significant developmental differences are found in hepatic gluconeogenic molecules in fetal and neonatal baboons, which may impact the responses to insulin during the neonatal period. Further studies under insulin‐stimulated conditions are required to understand the physiologic impact of these maturational differences. Significant developmental differences were found in several hepatic gluconeogenic molecules. In particular, phosphorylated FOXO1 was significantly reduced in the liver of premature fetal baboons compared to adults and may contribute the increased incidence of hyperglycemia seen in prematurity. In addition, PEPCK increased with advancing gestational age and may play a key role in glucose regulation during the newborn period.
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Affiliation(s)
- Lisa L McGill-Vargas
- Department of Pediatrics, Division of Neonatology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Teresa Johnson-Pais
- Department of Pediatrics, Division of Child Neurology, Developmental Pediatrics & Genetics, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Marney C Johnson
- Department of Pediatrics, Division of Neonatology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Cynthia L Blanco
- Department of Pediatrics, Division of Neonatology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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MicroRNA-486 regulates normal erythropoiesis and enhances growth and modulates drug response in CML progenitors. Blood 2014; 125:1302-13. [PMID: 25515961 DOI: 10.1182/blood-2014-06-581926] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) are key regulators of hematopoietic cell differentiation and may contribute to altered growth of leukemic stem cells. Using microarray-based miRNA profiling, we found that miRNA 486 (miR-486) is significantly upregulated in chronic myeloid leukemia (CML) compared with normal CD34(+) cells, particularly in the megakaryocyte-erythroid progenitor population. miR-486-5p expression increased during erythroid differentiation of both CML and normal CD34(+) cells. Ectopic miR-486-5p expression enhanced in vitro erythroid differentiation of normal CD34(+) cells, whereas miR-486-5p inhibition suppressed normal CD34(+) cell growth in vitro and in vivo and inhibited erythroid differentiation and erythroid cell survival. The effects of miR-486-5p on hematopoietic cell growth and survival are mediated at least in part via regulation of AKT signaling and FOXO1 expression. Using gene expression and bioinformatics analysis, together with functional screening, we identified several novel miR-486-5p target genes that may modulate erythroid differentiation. We further show that increased miR-486-5p expression in CML progenitors is related to both kinase-dependent and kinase-independent mechanisms. Inhibition of miR-486-5p reduced CML progenitor growth and enhanced apoptosis following imatinib treatment. In conclusion, our studies reveal a novel role for miR-486-5p in regulating normal hematopoiesis and of BCR-ABL-induced miR-486-5p overexpression in modulating CML progenitor growth, survival, and drug sensitivity.
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Abstract
The liver is an essential metabolic organ, and its metabolic function is controlled by insulin and other metabolic hormones. Glucose is converted into pyruvate through glycolysis in the cytoplasm, and pyruvate is subsequently oxidized in the mitochondria to generate ATP through the TCA cycle and oxidative phosphorylation. In the fed state, glycolytic products are used to synthesize fatty acids through de novo lipogenesis. Long-chain fatty acids are incorporated into triacylglycerol, phospholipids, and/or cholesterol esters in hepatocytes. These complex lipids are stored in lipid droplets and membrane structures, or secreted into the circulation as very low-density lipoprotein particles. In the fasted state, the liver secretes glucose through both glycogenolysis and gluconeogenesis. During pronged fasting, hepatic gluconeogenesis is the primary source for endogenous glucose production. Fasting also promotes lipolysis in adipose tissue, resulting in release of nonesterified fatty acids which are converted into ketone bodies in hepatic mitochondria though β-oxidation and ketogenesis. Ketone bodies provide a metabolic fuel for extrahepatic tissues. Liver energy metabolism is tightly regulated by neuronal and hormonal signals. The sympathetic system stimulates, whereas the parasympathetic system suppresses, hepatic gluconeogenesis. Insulin stimulates glycolysis and lipogenesis but suppresses gluconeogenesis, and glucagon counteracts insulin action. Numerous transcription factors and coactivators, including CREB, FOXO1, ChREBP, SREBP, PGC-1α, and CRTC2, control the expression of the enzymes which catalyze key steps of metabolic pathways, thus controlling liver energy metabolism. Aberrant energy metabolism in the liver promotes insulin resistance, diabetes, and nonalcoholic fatty liver diseases.
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Affiliation(s)
- Liangyou Rui
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan
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Yu Y, Liang D, Tian Q, Chen X, Jiang B, Chou BK, Hu P, Cheng L, Gao P, Li J, Wang G. Stimulation of somatic cell reprogramming by ERas-Akt-FoxO1 signaling axis. Stem Cells 2014; 32:349-63. [PMID: 23765875 DOI: 10.1002/stem.1447] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 04/28/2013] [Accepted: 05/15/2013] [Indexed: 12/19/2022]
Abstract
Reprogramming of somatic cells to induced pluripotent stem cells (iPSCs) shares much similarity to the cancer initiation process, and the molecular mechanisms underlying both processes remain to be elucidated. Here, we report that a tumor- or embryonic stem cell-specific Ras gene ERas, which encodes a constitutively active form of GTPase, and its downstream Phosphoinositide-3 kinase/Akt signaling pathway are important facilitators for the somatic reprogramming process. We found that overexpression of ERas retrovirally enhanced mouse iPSC induction while ERas knockdown repressed it. Modulation of Akt signaling by genetic or chemical means greatly impacted the reprogramming efficiency. Forced expression of a constitutively active Akt1 gene could rescue the reduced efficiency resulting from ERas knockdown, and point-mutation analyses further revealed that ERas is tightly coupled with Akt signaling to enhance reprogramming. Mechanistically, the forkhead transcription factor FoxO1 can function as a barrier to the iPSC induction, and the inactivation of FoxO1 by Akt-dependent phosphorylation largely accounts for the enhancing effect of ERas-Akt signaling on reprogramming. Collectively, these results unravel the significance of the ERas-Akt-FoxO1 signaling axis in iPSC generation, suggesting a possibly shared molecular basis for both somatic reprogramming and cancer initiation.
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Affiliation(s)
- Yong Yu
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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Liver Med23 ablation improves glucose and lipid metabolism through modulating FOXO1 activity. Cell Res 2014; 24:1250-65. [PMID: 25223702 PMCID: PMC4185346 DOI: 10.1038/cr.2014.120] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 07/03/2014] [Accepted: 07/27/2014] [Indexed: 12/23/2022] Open
Abstract
Mediator complex is a molecular hub integrating signaling, transcription factors, and RNA polymerase II (RNAPII) machinery. Mediator MED23 is involved in adipogenesis and smooth muscle cell differentiation, suggesting its role in energy homeostasis. Here, through the generation and analysis of a liver-specific Med23-knockout mouse, we found that liver Med23 deletion improved glucose and lipid metabolism, as well as insulin responsiveness, and prevented diet-induced obesity. Remarkably, acute hepatic Med23 knockdown in db/db mice significantly improved the lipid profile and glucose tolerance. Mechanistically, MED23 participates in gluconeogenesis and cholesterol synthesis through modulating the transcriptional activity of FOXO1, a key metabolic transcription factor. Indeed, hepatic Med23 deletion impaired the Mediator and RNAPII recruitment and attenuated the expression of FOXO1 target genes. Moreover, this functional interaction between FOXO1 and MED23 is evolutionarily conserved, as the in vivo activities of dFOXO in larval fat body and in adult wing can be partially blocked by Med23 knockdown in Drosophila. Collectively, our data revealed Mediator MED23 as a novel regulator for energy homeostasis, suggesting potential therapeutic strategies against metabolic diseases.
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49
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Qi Y, Zhang K, Wu Y, Xu Z, Yong QC, Kumar R, Baker KM, Zhu Q, Chen S, Guo S. Novel mechanism of blood pressure regulation by forkhead box class O1-mediated transcriptional control of hepatic angiotensinogen. Hypertension 2014; 64:1131-40. [PMID: 25069665 DOI: 10.1161/hypertensionaha.114.03970] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The renin-angiotensin system is a major determinant of blood pressure regulation. It consists of a cascade of enzymatic reactions involving 3 components: angiotensinogen, renin, and angiotensin-converting enzyme, which generate angiotensin II as a biologically active product. Angiotensinogen is largely produced in the liver, acting as a major determinant of the circulating renin-angiotensin system, which exerts acute hemodynamic effects on blood pressure regulation. How the expression of angiotensinogen is regulated is not completely understood. Here, we hypothesize that angiotensinogen is regulated by forkhead transcription factor forkhead box class O1 (Foxo1), an insulin-suppressed transcription factor, and thereby controls blood pressure in mice. We generated liver-specific Foxo1 knockout mice, which exhibited a reduction in plasma angiotensinogen and angiotensin II levels and a significant decrease in blood pressure. Using hepatocyte cultures, we demonstrated that overexpression of Foxo1 increased angiotensinogen expression, whereas hepatocytes lacking Foxo1 demonstrated a reduction of angiotensinogen gene expression and partially impaired insulin inhibition on angiotensinogen gene expression. Furthermore, mouse angiotensinogen prompter analysis demonstrated that the angiotensinogen promoter region contains a functional Foxo1-binding site, which is responsible for both Foxo1 stimulation and insulin suppression on the promoter activity. Together, these data demonstrate that Foxo1 regulates hepatic angiotensinogen gene expression and controls plasma angiotensinogen and angiotensin II levels, modulating blood pressure control in mice.
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Affiliation(s)
- Yajuan Qi
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Kebin Zhang
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Yuxin Wu
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Zihui Xu
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Qian Chen Yong
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Rajesh Kumar
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Kenneth M Baker
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Qinglei Zhu
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Shouwen Chen
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.)
| | - Shaodong Guo
- From the Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M University Health Science Center, Balyor Scott & White Health, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.); and Central Texas Veterans Health Care System, Temple (Y.Q., K.Z., Y.W., Z.X., Q.C.Y., R.K., K.M.B., Q.Z., S.C., S.G.).
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50
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Bridges JP, Schehr A, Wang Y, Huo L, Besnard V, Ikegami M, Whitsett JA, Xu Y. Epithelial SCAP/INSIG/SREBP signaling regulates multiple biological processes during perinatal lung maturation. PLoS One 2014; 9:e91376. [PMID: 24806461 PMCID: PMC4012993 DOI: 10.1371/journal.pone.0091376] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 02/10/2014] [Indexed: 11/19/2022] Open
Abstract
Pulmonary surfactant is required for lung function at birth and throughout postnatal life. Defects in the surfactant system are associated with common pulmonary disorders including neonatal respiratory distress syndrome and acute respiratory distress syndrome in children and adults. Lipogenesis is essential for the synthesis of pulmonary surfactant by type II epithelial cells lining the alveoli. This study sought to identify the role of pulmonary epithelial SREBP, a transcriptional regulator of cellular lipid homeostasis, during a critical time period of perinatal lung maturation in the mouse. Genome wide mRNA expression profiling of lung tissue from transgenic mice with epithelial-specific deletions of Scap (ScapΔ/Δ, resulting in inactivation of SREBP signaling) or Insig1 and Insig2 (Insig1/2Δ/Δ, resulting in activation of SREBP signaling) was assessed. Differentially expressed genes responding to SREBP perturbations were identified and subjected to functional enrichment analysis, pathway mapping and literature mining to predict upstream regulators and transcriptional networks regulating surfactant lipid homeostasis. Through comprehensive data analysis and integration, time dependent effects of epithelial SCAP/INSIG/SREBP deletion and defined SCAP/INSIG/SREBP-associated genes, bioprocesses and downstream pathways were identified. SREBP signaling influences epithelial development, cell death and cell proliferation at E17.5, while primarily influencing surfactant physiology, lipid/sterol synthesis, and phospholipid transport after birth. SREBP signaling integrated with the Wnt/β-catenin and glucocorticoid receptor signaling pathways during perinatal lung maturation. SREBP regulates perinatal lung lipogenesis and maturation through multiple mechanisms by interactions with distinct sets of regulatory partners.
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Affiliation(s)
- James P. Bridges
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Angelica Schehr
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Yanhua Wang
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Liya Huo
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | | | - Machiko Ikegami
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Jeffrey A. Whitsett
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Yan Xu
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
- * E-mail:
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