1
|
Xu J, Zhu L, Xu J, Lin K, Wang J, Bi YL, Xu GT, Tian H, Gao F, Jin C, Lu L. The identification of a novel shared therapeutic target and drug across all insulin-sensitive tissues under insulin resistance. Front Nutr 2024; 11:1381779. [PMID: 38595789 PMCID: PMC11002099 DOI: 10.3389/fnut.2024.1381779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/15/2024] [Indexed: 04/11/2024] Open
Abstract
Background To identify key and shared insulin resistance (IR) molecular signatures across all insulin-sensitive tissues (ISTs), and their potential targeted drugs. Methods Three datasets from Gene Expression Omnibus (GEO) were acquired, in which the ISTs (fat, muscle, and liver) were from the same individual with obese mice. Integrated bioinformatics analysis was performed to obtain the differentially expressed genes (DEGs). Weighted gene co-expression network analysis (WGCNA) was carried out to determine the "most significant trait-related genes" (MSTRGs). Enrichment analysis and PPI network were performed to find common features and novel hub genes in ISTs. The shared genes of DEGs and genes between DEGs and MSTRGs across four ISTs were identified as key IR therapeutic target. The Attie Lab diabetes database and obese rats were used to verify candidate genes. A medical drug-gene interaction network was conducted by using the Comparative Toxicogenomics Database (CTD) to find potential targeted drugs. The candidate drug was validated in Hepa1-6 cells. Results Lipid metabolic process, mitochondrion, and oxidoreductase activity as common features were enriched from ISTs under an obese context. Thirteen shared genes (Ubd, Lbp, Hp, Arntl, Cfd, Npas2, Thrsp., Tpx2, Pkp1, Sftpd, Mthfd2, Tnfaip2, and Vnn3) of DEGs across ISTs were obtained and confirmed. Among them, Ubd was the only shared gene between DEGs and MSTRGs across four ISTs. The expression of Ubd was significantly upregulated across four ISTs in obese rats, especially in the liver. The IR Hepa1-6 cell models treated with dexamethasone (Dex), palmitic acid (PA), and 2-deoxy-D-ribose (dRib) had elevated expression of Ubd. Knockdown of Ubd increased the level of p-Akt. A lowing Ubd expression drug, promethazine (PMZ) from CTD analysis rescued the decreased p-Akt level in IR Hepa1-6 cells. Conclusion This study revealed Ubd, a novel and shared IR molecular signature across four ISTs, as an effective biomarker and provided new insight into the mechanisms of IR. PMZ was a candidate drug for IR which increased p-Akt level and thus improved IR by targeting Ubd and downregulation of Ubd expression. Both Ubd and PMZ merit further clinical translational investigation to improve IR.
Collapse
Affiliation(s)
- Jinyuan Xu
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| | - Lilin Zhu
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| | - Jie Xu
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| | - Kailong Lin
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| | - Juan Wang
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Genetics, Tongji University School of Medicine, Shanghai, China
| | - Yan-long Bi
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
| | - Guo-Tong Xu
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
| | - Haibin Tian
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Ophthalmology of Ten People Hospital Affiliated to Tongji University, School of Medicine, Shanghai, China
| | - Furong Gao
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| | - Caixia Jin
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| | - Lixia Lu
- Department of Ophthalmology, Shanghai Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji Eye Institute, Shanghai, China
- Department of Biochemistry and Molecular Biology, School of Medicine, Tongji University, Shanghai, China
| |
Collapse
|
2
|
Zhao Q, Cheng J, Gao A, Wang J, Lu H, Jiang S, Li X, Ni J, Dong W, Lai S, Gong J, Zhu H, Liang Y. Duodenal-Jejunal bypass improves metabolism and re-models extra cellular matrix through modulating ceRNA network. Genomics 2023; 115:110744. [PMID: 37972907 DOI: 10.1016/j.ygeno.2023.110744] [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: 05/19/2023] [Revised: 09/29/2023] [Accepted: 11/12/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Bariatric surgery (BS) is an effective approach in treating obesity and ameliorating T2DM with obesity. Our previous studies demonstrated that duodenal-jejunal bypass (DJB) altered long non-coding RNAs (lncRNAs) in the gastrointestinal system, which is associated with modulation of lipid metabolism, and glycemic control through entero-pancreatic axis and gut-brain axis. The adipose non-coding RNA expression profile and the underlying competing endogenous RNA (ceRNA) regulatory network pattern post DJB needs further research and investigation. RESULTS In this study, we compared the lncRNAs, circular RNAs (circRNAs) and messenger RNAs (mRNAs) expression in adipose tissues between the sham group and the DJB group. 2219 differentially expressed mRNAs (DEmRNAs), 722 differential expression of lncRNAs (DElncRNAs) and 425 differential expression of circRNAs (DEcircRNAs) were identified. GO terms and KEGG pathways analysis of the DEmRNAs implied that the dysregulated adipose mRNAs were associated with lipid, amino acid metabolism, insulin resistance, and extra cellular matrix (ECM)-related pathways. Moreover, via analyzing ceRNA regulatory networks of DElncRNAs and DEcircRNAs, 31 hub DE mRNAs, especially Mpp7, 9330159F19Rik, Trhde. Trdn, Sorbs2, were found on these pathways. CONCLUSIONS The role of DJB in adipose tends to remodel ECM and improve the energy metabolism through the ceRNA regulatory network.
Collapse
Affiliation(s)
- Qingnan Zhao
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China; Shanghai Key Laboratory of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Jiaxin Cheng
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China; Department of Pharmacy, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Aimei Gao
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Jianqiao Wang
- School of pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Huiping Lu
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China
| | - Shan Jiang
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Xiaojing Li
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Jiahao Ni
- Xuhui Health Management and Development Center,50 yongchuan Road, Xuhui, Shanghai 200030, China
| | - Wenmin Dong
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China
| | - Shenjin Lai
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China
| | - Jingru Gong
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China.
| | - Han Zhu
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China; Fudan Zhangjiang Institute, Shanghai 201203, China.
| | - Yongjun Liang
- Fudan Zhangjiang Institute, Shanghai 201203, China; Center for Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 201399 Shanghai, China; Shanghai Key Laboratory of Vascular Lesions Regulation and Remodeling, Shanghai 201399, China.
| |
Collapse
|
3
|
Frick JM, Eller OC, Foright RM, Levasseur BM, Yang X, Wang R, Winter MK, O'Neil MF, Morris EM, Thyfault JP, Christianson JA. High-fat/high-sucrose diet worsens metabolic outcomes and widespread hypersensitivity following early-life stress exposure in female mice. Am J Physiol Regul Integr Comp Physiol 2023; 324:R353-R367. [PMID: 36693166 PMCID: PMC9970659 DOI: 10.1152/ajpregu.00216.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 12/21/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023]
Abstract
Exposure to stress early in life has been associated with adult-onset comorbidities such as chronic pain, metabolic dysregulation, obesity, and inactivity. We have established an early-life stress model using neonatal maternal separation (NMS) in mice, which displays evidence of increased body weight and adiposity, widespread mechanical allodynia, and hypothalamic-pituitary-adrenal axis dysregulation in male mice. Early-life stress and consumption of a Western-style diet contribute to the development of obesity; however, relatively few preclinical studies have been performed in female rodents, which are known to be protected against diet-induced obesity and metabolic dysfunction. In this study, we gave naïve and NMS female mice access to a high-fat/high-sucrose (HFS) diet beginning at 4 wk of age. Robust increases in body weight and fat were observed in HFS-fed NMS mice during the first 10 wk on the diet, driven partly by increased food intake. Female NMS mice on an HFS diet showed widespread mechanical hypersensitivity compared with either naïve mice on an HFS diet or NMS mice on a control diet. HFS diet-fed NMS mice also had impaired glucose tolerance and fasting hyperinsulinemia. Strikingly, female NMS mice on an HFS diet showed evidence of hepatic steatosis with increased triglyceride levels and altered glucocorticoid receptor levels and phosphorylation state. They also exhibited increased energy expenditure as observed via indirect calorimetry and expression of proinflammatory markers in perigonadal adipose. Altogether, our data suggest that early-life stress exposure increased the susceptibility of female mice to develop diet-induced metabolic dysfunction and pain-like behaviors.
Collapse
Affiliation(s)
- Jenna M Frick
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Olivia C Eller
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Rebecca M Foright
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Brittni M Levasseur
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Xiaofang Yang
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Ruipeng Wang
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Michelle K Winter
- Kansas Intellectual and Developmental Disabilities Research Association, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Maura F O'Neil
- Department of Pathology and Laboratory Medicine, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - E Matthew Morris
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - John P Thyfault
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
- Research Service, Kansas City Veterans Affairs Medical Center, Kansas City, Kansas, United States
| | - Julie A Christianson
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States
| |
Collapse
|
4
|
Meneses MJ, Sousa-Lima I, Jarak I, Raposo JF, Alves MG, Macedo MP. Distinct impacts of fat and fructose on the liver, muscle, and adipose tissue metabolome: An integrated view. Front Endocrinol (Lausanne) 2022; 13:898471. [PMID: 36060961 PMCID: PMC9428722 DOI: 10.3389/fendo.2022.898471] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/12/2022] [Indexed: 11/17/2022] Open
Abstract
Objective In the last years, changes in dietary habits have contributed to the increasing prevalence of metabolic disorders, such as non-alcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM). The differential burden of lipids and fructose on distinct organs needs to be unveiled. Herein, we hypothesized that high-fat and high-fructose diets differentially affect the metabolome of insulin-sensitive organs such as the liver, muscle, and different adipose tissue depots. Methods We have studied the impact of 12 weeks of a control (11.50% calories from fat, 26.93% from protein, and 61.57% from carbohydrates), high-fat/sucrose (HFat), or high-fructose (HFruct) feeding on C57Bl/6J male mice. Besides glucose homeostasis, we analyzed the hepatic levels of glucose and lipid-metabolism-related genes and the metabolome of the liver, the muscle, and white (WAT) and brown adipose tissue (BAT) depots. Results HFat diet led to a more profound impact on hepatic glucose and lipid metabolism than HFruct, with mice presenting glucose intolerance, increased saturated fatty acids, and no glycogen pool, yet both HFat and HFruct presented hepatic insulin resistance. HFat diet promoted a decrease in glucose and lactate pools in the muscle and an increase in glutamate levels. While HFat had alterations in BAT metabolites that indicate increased thermogenesis, HFruct led to an increase in betaine, a protective metabolite against fructose-induced inflammation. Conclusions Our data illustrate that HFat and HFruct have a negative but distinct impact on the metabolome of the liver, muscle, WAT, and BAT.
Collapse
Affiliation(s)
- Maria João Meneses
- iNOVA4Health, NOVA Medical School/Faculdade de Ciências Médicas (NMS/FCM), Universidade Nova de Lisboa, Lisbon, Portugal
- Portuguese Diabetes Association - Education and Research Center (APDP-ERC), Lisbon, Portugal
| | - Inês Sousa-Lima
- iNOVA4Health, NOVA Medical School/Faculdade de Ciências Médicas (NMS/FCM), Universidade Nova de Lisboa, Lisbon, Portugal
| | - Ivana Jarak
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
- Department of Anatomy and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - João F. Raposo
- iNOVA4Health, NOVA Medical School/Faculdade de Ciências Médicas (NMS/FCM), Universidade Nova de Lisboa, Lisbon, Portugal
- Portuguese Diabetes Association - Education and Research Center (APDP-ERC), Lisbon, Portugal
| | - Marco G. Alves
- Department of Anatomy and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Maria Paula Macedo
- iNOVA4Health, NOVA Medical School/Faculdade de Ciências Médicas (NMS/FCM), Universidade Nova de Lisboa, Lisbon, Portugal
- Portuguese Diabetes Association - Education and Research Center (APDP-ERC), Lisbon, Portugal
- Medical Sciences Department, University of Aveiro, Aveiro, Portugal
| |
Collapse
|
5
|
AlZaim I, Hammoud SH, Al-Koussa H, Ghazi A, Eid AH, El-Yazbi AF. Adipose Tissue Immunomodulation: A Novel Therapeutic Approach in Cardiovascular and Metabolic Diseases. Front Cardiovasc Med 2020; 7:602088. [PMID: 33282920 PMCID: PMC7705180 DOI: 10.3389/fcvm.2020.602088] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/22/2020] [Indexed: 12/12/2022] Open
Abstract
Adipose tissue is a critical regulator of systemic metabolism and bodily homeostasis as it secretes a myriad of adipokines, including inflammatory and anti-inflammatory cytokines. As the main storage pool of lipids, subcutaneous and visceral adipose tissues undergo marked hypertrophy and hyperplasia in response to nutritional excess leading to hypoxia, adipokine dysregulation, and subsequent low-grade inflammation that is characterized by increased infiltration and activation of innate and adaptive immune cells. The specific localization, physiology, susceptibility to inflammation and the heterogeneity of the inflammatory cell population of each adipose depot are unique and thus dictate the possible complications of adipose tissue chronic inflammation. Several lines of evidence link visceral and particularly perivascular, pericardial, and perirenal adipose tissue inflammation to the development of metabolic syndrome, insulin resistance, type 2 diabetes and cardiovascular diseases. In addition to the implication of the immune system in the regulation of adipose tissue function, adipose tissue immune components are pivotal in detrimental or otherwise favorable adipose tissue remodeling and thermogenesis. Adipose tissue resident and infiltrating immune cells undergo metabolic and morphological adaptation based on the systemic energy status and thus a better comprehension of the metabolic regulation of immune cells in adipose tissues is pivotal to address complications of chronic adipose tissue inflammation. In this review, we discuss the role of adipose innate and adaptive immune cells across various physiological and pathophysiological states that pertain to the development or progression of cardiovascular diseases associated with metabolic disorders. Understanding such mechanisms allows for the exploitation of the adipose tissue-immune system crosstalk, exploring how the adipose immune system might be targeted as a strategy to treat cardiovascular derangements associated with metabolic dysfunctions.
Collapse
Affiliation(s)
- Ibrahim AlZaim
- Department of Pharmacology and Toxicology, American University of Beirut, Beirut, Lebanon
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Safaa H Hammoud
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon
| | - Houssam Al-Koussa
- Department of Pharmacology and Toxicology, American University of Beirut, Beirut, Lebanon
| | - Alaa Ghazi
- Department of Pharmacology and Toxicology, American University of Beirut, Beirut, Lebanon
| | - Ali H Eid
- Department of Pharmacology and Therapeutics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar
| | - Ahmed F El-Yazbi
- Department of Pharmacology and Toxicology, American University of Beirut, Beirut, Lebanon
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| |
Collapse
|
6
|
Sinden DS, Holman CD, Bare CJ, Sun X, Gade AR, Cohen DE, Pitt GS. Knockout of the X-linked Fgf13 in the hypothalamic paraventricular nucleus impairs sympathetic output to brown fat and causes obesity. FASEB J 2019; 33:11579-11594. [PMID: 31339804 PMCID: PMC6994920 DOI: 10.1096/fj.201901178r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/01/2019] [Indexed: 12/15/2022]
Abstract
Fibroblast growth factor (FGF)13, a nonsecreted, X-linked, FGF homologous factor, is differentially expressed in adipocytes in response to diet, yet Fgf13's role in metabolism has not been explored. Heterozygous Fgf13 knockouts fed normal chow and housed at 22°C showed hyperactivity accompanying reduced core temperature and obesity when housed at 30°C. Those heterozygous knockouts showed defects in thermogenesis even at 30°C and an inability to protect core temperature. Surprisingly, we detected trivial FGF13 in adipose of wild-type mice fed normal chow and no obesity in adipose-specific heterozygous knockouts housed at 30°C, and we detected an intact brown fat response through exogenous β3 agonist stimulation, suggesting a defect in sympathetic drive to brown adipose tissue. In contrast, hypothalamic-specific ablation of Fgf13 recapitulated weight gain at 30°C. Norepinephrine turnover in brown fat was reduced at both housing temperatures. Thus, our data suggest that impaired CNS regulation of sympathetic activation of brown fat underlies obesity and thermogenesis in Fgf13 heterozygous knockouts fed normal chow.-Sinden, D. S., Holman, C. D., Bare, C. J., Sun, X., Gade, A. R., Cohen, D. E., Pitt, G. S. Knockout of the X-linked Fgf13 in the hypothalamic paraventricular nucleus impairs sympathetic output to brown fat and causes obesity.
Collapse
Affiliation(s)
- Daniel S. Sinden
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
- Cardiovascular Research Institute, Weill Cornell Medical College, New York, New York, USA
| | - Corey D. Holman
- Division of Gastroenterology and Hepatology, Weill Cornell Medical College, New York, New York, USA
| | - Curtis J. Bare
- Division of Gastroenterology and Hepatology, Weill Cornell Medical College, New York, New York, USA
| | - Xiaolu Sun
- Cardiovascular Research Institute, Weill Cornell Medical College, New York, New York, USA
| | - Aravind R. Gade
- Cardiovascular Research Institute, Weill Cornell Medical College, New York, New York, USA
| | - David E. Cohen
- Division of Gastroenterology and Hepatology, Weill Cornell Medical College, New York, New York, USA
| | - Geoffrey S. Pitt
- Cardiovascular Research Institute, Weill Cornell Medical College, New York, New York, USA
| |
Collapse
|
7
|
Farrell PJ, Zopf CJ, Huang HJ, Balakrishna D, Holub C, Bilakovics J, Fanjul A, Matuszkiewicz J, Plonowski A, Rolzin P, Banerjee U, Ermolieff J, Cheruvallath ZS, McBride C, Bartkowski D, Mazur C, Pachori A, Larson CJ. Using Target Engagement Biomarkers to Predict Clinical Efficacy of MetAP2 Inhibitors. J Pharmacol Exp Ther 2019; 371:299-308. [PMID: 31537613 DOI: 10.1124/jpet.119.259028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 09/04/2019] [Indexed: 01/09/2023] Open
Abstract
Target-engagement pharmacodynamic (PD) biomarkers are valuable tools in the prioritization of drug candidates, especially for novel, first-in-class mechanisms whose robustness to alter disease outcome is unknown. Methionine aminopeptidase 2 (MetAP2) is a cytosolic metalloenzyme that cleaves the N-terminal methionine from nascent proteins. Inhibition of MetAP2 leads to weight loss in obese rodents, dogs and humans. However, there is a need to develop efficacious compounds that specifically inhibit MetAP2 with an improved safety profile. The objective of this study was to identify a PD biomarker for selecting potent, efficacious compounds and for predicting clinical efficacy that would result from inhibition of MetAP2. Here we report the use of NMet14-3-3γ for this purpose. Treatment of primary human cells with MetAP2 inhibitors resulted in an approx. 10-fold increase in NMet14-3-3γ levels. Furthermore, treatment of diet-induced obese mice with these compounds reduced body weight (approx. 20%) and increased NMet14-3-3γ (approx. 15-fold) in adipose tissues. The effects on target engagement and body weight increased over time and were dependent on dose and administration frequency of compound. The relationship between compound concentration in plasma, NMet14-3-3γ in tissue, and reduction of body weight in obese mice was used to generate a pharmacokinetic-pharmacodynamic-efficacy model for predicting efficacy of MetAP2 inhibitors in mice. We also developed a model for predicting weight loss in humans using a target engagement PD assay that measures inhibitor-bound MetAP2 in blood. In summary, MetAP2 target engagement biomarkers can be used to select efficacious compounds and predict weight loss in humans. SIGNIFICANCE STATEMENT: The application of target engagement pharmacodynamic biomarkers during drug development provides a means to determine the dose required to fully engage the intended target and an approach to connect the drug target to physiological effects. This work exemplifies the process of using target engagement biomarkers during preclinical research to select new drug candidates and predict clinical efficacy. We determine concentration of MetAP2 antiobesity compounds needed to produce pharmacological activity in primary human cells and in target tissues from an appropriate animal model and establish key relationships between pharmacokinetics, pharmacodynamics, and efficacy, including the duration of effects after drug administration. The biomarkers described here can aid decision-making in early clinical trials of MetAP2 inhibitors for the treatment of obesity.
Collapse
Affiliation(s)
- Pamela J Farrell
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Christopher J Zopf
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Huey-Jing Huang
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Deepika Balakrishna
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Corine Holub
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - James Bilakovics
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Andrea Fanjul
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Jennifer Matuszkiewicz
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Artur Plonowski
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Paul Rolzin
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Urmi Banerjee
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Jacques Ermolieff
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Zacharia S Cheruvallath
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Christopher McBride
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Darian Bartkowski
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Crystal Mazur
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Alok Pachori
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| | - Christopher J Larson
- Biological Sciences (P.J.F., H.-J.H., De.B., C.H., J.B., A.F., J.M., A.Pl., P.R., U.B., J.E., C.J.L.), Chemistry (Z.S.C., C.Mc.), and Drug Metabolism and Pharmacokinetics (Da.B.), Takeda California, San Diego, California; Modeling and Simulation, Takeda Boston, Cambridge, Massachusetts (C.J.Z.); and Translational Research Institute for Metabolism and Diabetes, Florida Hospital Campus, Orlando, Florida (C.Ma., A.Pa.)
| |
Collapse
|
8
|
Jang HR, Park HJ, Kang D, Chung H, Nam MH, Lee Y, Park JH, Lee HY. A protective mechanism of probiotic Lactobacillus against hepatic steatosis via reducing host intestinal fatty acid absorption. Exp Mol Med 2019; 51:1-14. [PMID: 31409765 PMCID: PMC6802638 DOI: 10.1038/s12276-019-0293-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/29/2019] [Accepted: 04/16/2019] [Indexed: 12/12/2022] Open
Abstract
The gut microbiome has been known to contribute up to ~30% of the energy absorption of the host. Although various beneficial mechanisms of probiotics have been suggested for non-alcoholic fatty liver disease (NAFLD), whether and which probiotics impact the host's intestinal energy absorption have not yet been quantitatively studied. Here, we suggest a novel mechanism of probiotics against NAFLD, in which Lactobacillus rhamnosus GG, the most common probiotic, shares intestinal fatty acids and prevents the development of diet-induced hepatic steatosis. By using quantitative methods (radioactive tracers and LC-MS) under both in vitro and in vivo conditions, we found that bacteria and hosts competed for fatty acid absorption in the intestine, resulting in decreased weight gain, body fat mass, and hepatic lipid accumulation without differences in calorie intake and excretion in mice fed the probiotic bacteria.
Collapse
Affiliation(s)
- Hye Rim Jang
- Laboratory of Mitochondrial and Metabolic Diseases, Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Korea
| | - Hyun-Jun Park
- Laboratory of Mitochondrial and Metabolic Diseases, Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Korea
- Department of Medicine, Gachon University School of Medicine, Incheon, Korea
| | - Dongwon Kang
- Laboratory of Mitochondrial and Metabolic Diseases, Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Korea
| | - Hayung Chung
- Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Myung Hee Nam
- Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Yeonhee Lee
- Culture Collection of Antimicrobial Resistant Microbes, Department of Horticulture, Biotechnology and Landscape Architecture, Seoul Women's University, Seoul, Korea
| | - Jae-Hak Park
- Korea Mouse Metabolic Phenotyping Center, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea.
| | - Hui-Young Lee
- Laboratory of Mitochondrial and Metabolic Diseases, Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Korea.
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea.
| |
Collapse
|
9
|
Abstract
C-type lectins of the Reg3 family belong to antimicrobial peptides (AMPs), which function as a barrier to protect body surfaces against microorganisms. Reg3 mainly expressed throughout the small intestine modulate host defense process via bactericidal activity. A wide range of studies indicate that Reg3 family plays an important role in the physical segregation of microbiota from host as well as the immune response induced by enteric pathogens. In this review, we review a growing literature on the potential metabolic functions of Reg3 proteins and their potential to act as important gut hormones.
Collapse
Affiliation(s)
- Jae Hoon Shin
- Department of Surgery, University of Michigan, Ann Arbor, Michigan
| | - Randy J Seeley
- Department of Surgery, University of Michigan, Ann Arbor, Michigan
- Department of Surgery, Internal Medicine and Nutritional Sciences, University of Michigan, Ann Arbor, Michigan
- Correspondence: Randy J. Seeley, PhD, Department of Surgery, Internal Medicine and Nutritional Science, University of Michigan, Ann Arbor, Michigan 48109. E-mail:
| |
Collapse
|
10
|
Cao J, Zhu Q, Liu L, Glazier BJ, Hinkel BC, Liang C, Shi H. Global Transcriptome Analysis of Brown Adipose Tissue of Diet-Induced Obese Mice. Int J Mol Sci 2018; 19:ijms19041095. [PMID: 29642370 PMCID: PMC5979511 DOI: 10.3390/ijms19041095] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/17/2018] [Accepted: 03/24/2018] [Indexed: 12/16/2022] Open
Abstract
Consumption of a high-fat diet (HFD) promotes the development of obesity, a disease resulting from an imbalance between energy intake and energy expenditure. Brown adipose tissue (BAT) has thermogenic capacity that burns calories to produce heat, and it is a potential target for the treatment and prevention of obesity. There is limited information regarding the impact of HFD on the BAT transcriptome. We hypothesized that HFD-induced obesity would lead to transcriptional regulation of BAT genes. RNA sequencing was used to generate global transcriptome profiles from BAT of lean mice fed with a low-fat diet (LFD) and obese mice fed with a HFD. Gene Ontology (GO) analysis identified increased expression of genes involved in biological processes (BP) related to immune responses, which enhanced molecular function (MF) in chemokine activity; decreased expression of genes involved in BP related to ion transport and muscle structure development, which reduced MF in channel and transporter activity and structural binding. Kyoto Encyclopedia of Genes and Genomes (KEGG) functional pathway analysis indicated that pathways associated with innate immunity were enhanced by HFD, while pathways associated with muscle contraction and calcium signaling were suppressed by HFD. Collectively, these results suggest that diet-induced obesity changes transcriptomic signatures of BAT, leading to dysfunction involving inflammation, calcium signaling, ion transport, and cell structural development.
Collapse
Affiliation(s)
- Jingyi Cao
- Program of Physiology and Neuroscience, Department of Biology, Miami University, Oxford, OH 45056, USA.
| | - Qi Zhu
- Program of Physiology and Neuroscience, Department of Biology, Miami University, Oxford, OH 45056, USA.
| | - Lin Liu
- Program of Bioinformatics, Department of Biology, Miami University, Oxford, OH 45056, USA.
| | - Bradley J Glazier
- Program of Physiology and Neuroscience, Department of Biology, Miami University, Oxford, OH 45056, USA.
| | - Benjamin C Hinkel
- Program of Physiology and Neuroscience, Department of Biology, Miami University, Oxford, OH 45056, USA.
| | - Chun Liang
- Program of Bioinformatics, Department of Biology, Miami University, Oxford, OH 45056, USA.
| | - Haifei Shi
- Program of Physiology and Neuroscience, Department of Biology, Miami University, Oxford, OH 45056, USA.
| |
Collapse
|
11
|
Kucuk Baloglu F, Baloglu O, Heise S, Brockmann G, Severcan F. Triglyceride dependent differentiation of obesity in adipose tissues by FTIR spectroscopy coupled with chemometrics. JOURNAL OF BIOPHOTONICS 2017; 10:1345-1355. [PMID: 28128535 DOI: 10.1002/jbio.201600223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/28/2016] [Accepted: 12/23/2016] [Indexed: 06/06/2023]
Abstract
The excess deposition of triglycerides in adipose tissue is the main reason of obesity and causes excess release of fatty acids to the circulatory system resulting in obesity and insulin resistance. Body mass index and waist circumference are not precise measure of obesity and obesity related metabolic diseases. Therefore, in the current study, it was aimed to propose triglyceride bands located at 1770-1720 cm-1 spectral region as a more sensitive obesity related biomarker using the diagnostic potential of Fourier Transform Infrared (FTIR) spectroscopy in subcutaneous (SCAT) and visceral (VAT) adipose tissues. The adipose tissue samples were obtained from 10 weeks old male control (DBA/2J) (n = 6) and four different obese BFMI mice lines (n = 6 per group). FTIR spectroscopy coupled with hierarchical cluster analysis (HCA) and principal component analysis (PCA) was applied to the spectra of triglyceride bands as a diagnostic tool in the discrimination of the samples. Successful discrimination of the obese, obesity related insulin resistant and control groups were achieved with high sensitivity and specificity. The results revealed the power of FTIR spectroscopy coupled with chemometric approaches in internal diagnosis of abdominal obesity based on the spectral differences in the triglyceride region that can be used as a spectral marker.
Collapse
Affiliation(s)
- Fatma Kucuk Baloglu
- Department of Biological Sciences, Middle East Technical University, 06531, Ankara, Turkey
| | - Onur Baloglu
- Department of Biological Sciences, Middle East Technical University, 06531, Ankara, Turkey
| | - Sebastian Heise
- Department of Breeding Biology and Molecular Genetics, Humboldt Universitatzu Berlin, Berlin, Germany
| | - Gudrun Brockmann
- Department of Breeding Biology and Molecular Genetics, Humboldt Universitatzu Berlin, Berlin, Germany
| | - Feride Severcan
- Department of Biological Sciences, Middle East Technical University, 06531, Ankara, Turkey
| |
Collapse
|
12
|
Pessentheiner AR, Huber K, Pelzmann HJ, Prokesch A, Radner FPW, Wolinski H, Lindroos-Christensen J, Hoefler G, Rülicke T, Birner-Gruenberger R, Bilban M, Bogner-Strauss JG. APMAP interacts with lysyl oxidase-like proteins, and disruption of Apmap leads to beneficial visceral adipose tissue expansion. FASEB J 2017; 31:4088-4103. [PMID: 28559441 PMCID: PMC5566180 DOI: 10.1096/fj.201601337r] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 05/15/2017] [Indexed: 01/18/2023]
Abstract
Adipocyte plasma membrane-associated protein (APMAP) has been described as an adipogenic factor in 3T3-L1 cells with unknown biochemical function; we therefore aimed to investigate the physiologic function of APMAP in vivo We generated Apmap-knockout mice and challenged them with an obesogenic diet to investigate their metabolic phenotype. We identified a novel truncated adipocyte-specific isoform of APMAP in mice that is produced by alternative transcription. Mice lacking the full-length APMAP protein, the only isoform that is expressed in humans, have an improved metabolic phenotype upon diet-induced obesity, indicated by enhanced insulin sensitivity, preserved glucose tolerance, increased respiratory exchange ratio, decreased inflammatory marker gene expression, and reduced adipocyte size. At the molecular level, APMAP interacts with the extracellular collagen cross-linking matrix proteins lysyl oxidase-like 1 and 3. On a high-fat diet, the expression of lysyl oxidase-like 1 and 3 is strongly decreased in Apmap-knockout mice, paralleled by reduced expression of profibrotic collagens and total collagen content in epididymal white adipose tissue, indicating decreased fibrotic potential. Together, our data suggest that APMAP is a novel regulator of extracellular matrix components, and establish that APMAP is a potential target to mitigate obesity-associated insulin resistance.-Pessentheiner, A. R., Huber, K., Pelzmann, H. J., Prokesch, A., Radner, F. P. W., Wolinski, H., Lindroos-Christensen, J., Hoefler, G., Rülicke, T., Birner-Gruenberger, R., Bilban, M., Bogner-Strauss, J. G. APMAP interacts with lysyl oxidase-like proteins, and disruption of Apmap leads to beneficial visceral adipose tissue expansion.
Collapse
Affiliation(s)
| | - Katharina Huber
- Institute of Biochemistry, Graz University of Technology, Graz, Austria
| | - Helmut J Pelzmann
- Institute of Biochemistry, Graz University of Technology, Graz, Austria
| | - Andreas Prokesch
- Institute of Cell Biology, Histology, and Embryology, Medical University of Graz, Graz, Austria
| | - Franz P W Radner
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
| | - Heimo Wolinski
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
- BioTechMed-Graz, University of Graz, Graz, Austria
| | | | - Gerald Hoefler
- Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Thomas Rülicke
- Institute of Laboratory Animal Science, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Ruth Birner-Gruenberger
- Institute of Pathology, Medical University of Graz, Graz, Austria
- Omics Center Graz, BioTechMed-Graz, University of Graz, Graz, Austria
| | - Martin Bilban
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | | |
Collapse
|
13
|
Inflammatory state of periaortic adipose tissue in mice under obesogenic dietary regimens. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2016. [DOI: 10.1016/j.jnim.2016.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
14
|
Polyák Á, Winkler Z, Kuti D, Ferenczi S, Kovács KJ. Brown adipose tissue in obesity: Fractalkine-receptor dependent immune cell recruitment affects metabolic-related gene expression. Biochim Biophys Acta Mol Cell Biol Lipids 2016; 1861:1614-1622. [DOI: 10.1016/j.bbalip.2016.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 07/05/2016] [Accepted: 07/09/2016] [Indexed: 02/02/2023]
|
15
|
Xue B, Nie J, Wang X, DuBois DC, Jusko WJ, Almon RR. Effects of High Fat Feeding on Adipose Tissue Gene Expression in Diabetic Goto-Kakizaki Rats. GENE REGULATION AND SYSTEMS BIOLOGY 2015; 9:15-26. [PMID: 26309393 PMCID: PMC4533846 DOI: 10.4137/grsb.s25172] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 05/24/2015] [Accepted: 06/17/2015] [Indexed: 12/15/2022]
Abstract
Development and progression of type 2 diabetes is a complex interaction between genetics and environmental influences. High dietary fat is one environmental factor that is conducive to the development of insulin-resistant diabetes. In the present report, we compare the responses of lean poly-genic, diabetic Goto-Kakizaki (GK) rats to those of control Wistar-Kyoto (WKY) rats fed a high fat diet from weaning to 20 weeks of age. This comparison included a wide array of physiological measurements along with gene expression profiling of abdominal adipose tissue using Affymetrix gene array chips. Animals of both strains fed a high fat diet or a normal diet were sacrificed at 4, 8, 12, 16, and 20 weeks for this comparison. The microarray analysis revealed that the two strains developed different adaptations to increased dietary fat. WKY rats decrease fatty acid synthesis and lipogenic processes whereas GK rats increase lipid elimination. However, on both diets the major differences between the two strains remained essentially the same. Specifically relative to the WKY strain, the GK strain showed lipoatrophy, chronic inflammation, and insulin resistance.
Collapse
Affiliation(s)
- Bai Xue
- Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Jing Nie
- Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Xi Wang
- Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Debra C DuBois
- Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY, USA. ; Department of Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - William J Jusko
- Department of Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA. ; New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY, USA
| | - Richard R Almon
- Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY, USA. ; Department of Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA. ; New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY, USA
| |
Collapse
|
16
|
Sen I, Bozkurt O, Aras E, Heise S, Brockmann GA, Severcan F. Lipid profiles of adipose and muscle tissues in mouse models of juvenile onset of obesity without high fat diet induction: a Fourier transform infrared (FT-IR) spectroscopic study. APPLIED SPECTROSCOPY 2015; 69:679-688. [PMID: 26054332 DOI: 10.1366/14-07443] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The current study aims to determine lipid profiles in terms of the content and structure of skeletal muscle and adipose tissues to better understand the characteristics of juvenile-onset spontaneous obesity without high fat diet induction. For the purposes of this study, muscle (longissimus, quadriceps) and adipose (inguinal, gonadal) tissues of 10-week-old male DBA/2J and Berlin fat mouse inbred (BFMI) lines (BFMI856, BFMI860, BFMI861) fed with a standard breeding diet were used. Biomolecular structure and composition was determined using attenuated total reflection Fourier transform (ATR FT-IR) spectroscopy, and muscle triglyceride content was further quantified using high-performance liquid chromatography (HPLC) coupled with an evaporative light scattering detector (ELSD). The results revealed a loss of unsaturation in BFMI860 and BFMI861 lines in both muscles and inguinal adipose tissue, together with a decrease in the hydrocarbon chain length of lipids, especially in the BFMI860 line in muscles, suggesting an increased lipid peroxidation. There was an increase in saturated lipid and triglyceride content in all tissues of BFMI lines, more profoundly in longissimus muscle, where the increased triglyceride content was quantitatively confirmed by HPLC-ELSD. Moreover, an increase in the metabolic turnover of carbohydrates in muscles of the BFMI860 line was observed. The results demonstrated that subcutaneous (inguinal) fat also displayed considerable obesity-induced alterations. Taken together, the results revealed differences in lipid structure and content of BFMI lines, which may originate from different insulin sensitivity levels of the lines, making them promising animal models for spontaneous obesity. The results will contribute to the understanding of the generation of insulin resistance in obesity without high fat diet induction.
Collapse
Affiliation(s)
- Ilke Sen
- Middle East Technical University, Department of Biological Sciences, 06800 Ankara, Turkey
| | | | | | | | | | | |
Collapse
|
17
|
Lippai D, Bala S, Catalano D, Kodys K, Szabo G. Micro-RNA-155 deficiency prevents alcohol-induced serum endotoxin increase and small bowel inflammation in mice. Alcohol Clin Exp Res 2015; 38:2217-24. [PMID: 25156614 DOI: 10.1111/acer.12483] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 04/29/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Chronic alcohol impairs gut barrier function and induces inflammatory cytokines. The effects of acute alcohol binge on the gut are partially understood. Micro-RNA-155 (miR-155), a modulator of cytokine and T-cell immune response in the gut, stabilizes tumor necrosis factor-α (TNFα) mRNA. Here, we investigated the role of the inflammation modulator miR-155 as well as the effects of acute binge and chronic alcohol feeding in the small bowel (SB) in mice. METHODS For the acute alcohol binge, wild-type (WT) mice received 5 g/kg 50% alcohol/d or equal amount of water oral gavage for 3 days. WT and miR-155-deficient (miR-155-knockout [KO]) mice received ethanol containing Lieber-DeCarli or isocaloric control diet for 5 weeks. MiR-155, antimicrobial peptide, regenerating islet-derived 3-beta (Reg3b), inflammation markers, Src homology 2-containing inositol phosphatase-1 (SHIP1), TNFα, and nuclear factor-κB (NF-κB) were measured in proximal intestinal tissue. Endotoxin was measured in the serum. RESULTS Acute alcohol binge enhanced, whereas chronic alcohol feeding decreased, Reg3b mRNA and protein levels in the SB. Both acute binge and chronic alcohol feeding increased serum endotoxin levels, intestinal NF-κB activation and TNFα mRNA levels. However, TNFα protein and miR-155 were increased only after chronic alcohol feeding in the SB. Furthermore, miR-155-KO mice were protected from chronic alcohol-induced increase in serum endotoxin, intestinal TNFα, and NF-κB activation. Also, alcohol-fed miR-155-KO mice had no decrease of Reg3b and SHIP1 levels. CONCLUSIONS These results demonstrate that both acute binge and chronic ethanol administration result in increased serum-endotoxin levels. Our study identifies a novel role for miR-155 in chronic alcohol-induced intestinal inflammation and barrier dysfunction.
Collapse
Affiliation(s)
- Dora Lippai
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary; Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | | | | | | | | |
Collapse
|
18
|
High-fat diet decreases energy expenditure and expression of genes controlling lipid metabolism, mitochondrial function and skeletal system development in the adipose tissue, along with increased expression of extracellular matrix remodelling- and inflammation-related genes. Br J Nutr 2015; 113:867-77. [PMID: 25744306 DOI: 10.1017/s0007114515000100] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The aim of the present study was to identify the genes differentially expressed in the visceral adipose tissue in a well-characterised mouse model of high-fat diet (HFD)-induced obesity. Male C57BL/6J mice (n 20) were fed either HFD (189 % of energy from fat) or low-fat diet (LFD, 42 % of energy from fat) for 16 weeks. HFD-fed mice exhibited obesity, insulin resistance, dyslipidaemia and adipose collagen accumulation, along with higher levels of plasma leptin, resistin and plasminogen activator inhibitor type 1, although there were no significant differences in plasma cytokine levels. Energy intake was similar in the two diet groups owing to lower food intake in the HFD group; however, energy expenditure was also lower in the HFD group than in the LFD group. Microarray analysis revealed that genes related to lipolysis, fatty acid metabolism, mitochondrial energy transduction, oxidation-reduction, insulin sensitivity and skeletal system development were down-regulated in HFD-fed mice, and genes associated with extracellular matrix (ECM) components, ECM remodelling and inflammation were up-regulated. The top ten up- or down-regulated genes include Acsm3, mt-Nd6, Fam13a, Cyp2e1, Rgs1 and Gpnmb, whose roles in the deterioration of obesity-associated adipose tissue are poorly understood. In conclusion, the genes identified here provide new therapeutic opportunities for prevention and treatment of diet-induced obesity.
Collapse
|
19
|
Kucuk Baloglu F, Garip S, Heise S, Brockmann G, Severcan F. FTIR imaging of structural changes in visceral and subcutaneous adiposity and brown to white adipocyte transdifferentiation. Analyst 2015; 140:2205-2214. [DOI: 10.1039/c4an02008a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
FTIR microspectroscopy coupled with UCP1 immunohistological staining enables the detection of obesity-related molecular alterations and transdifferentiations in visceral and subcutaneous adipose tissues in spontaneously obese mice lines.
Collapse
Affiliation(s)
- Fatma Kucuk Baloglu
- Department of Biological Sciences
- Middle East Technical University
- Ankara
- Turkey
| | - Sebnem Garip
- Department of Medical Biochemistry
- Faculty of Medicine
- Istanbul Kemerburgaz University
- Istanbul
- Turkey
| | - Sebastian Heise
- Department of Breeding Biology and Molecular Genetics
- Humboldt Universitatzu Berlin
- Berlin
- Germany
| | - Gudrun Brockmann
- Department of Breeding Biology and Molecular Genetics
- Humboldt Universitatzu Berlin
- Berlin
- Germany
| | - Feride Severcan
- Department of Biological Sciences
- Middle East Technical University
- Ankara
- Turkey
| |
Collapse
|
20
|
Chen P, Takeuchi F, Lee JY, Li H, Wu JY, Liang J, Long J, Tabara Y, Goodarzi MO, Pereira MA, Kim YJ, Go MJ, Stram DO, Vithana E, Khor CC, Liu J, Liao J, Ye X, Wang Y, Lu L, Young TL, Lee J, Thai AC, Cheng CY, van Dam RM, Friedlander Y, Heng CK, Koh WP, Chen CH, Chang LC, Pan WH, Qi Q, Isono M, Zheng W, Cai Q, Gao Y, Yamamoto K, Ohnaka K, Takayanagi R, Kita Y, Ueshima H, Hsiung CA, Cui J, Sheu WHH, Rotter JI, Chen YDI, Hsu C, Okada Y, Kubo M, Takahashi A, Tanaka T, van Rooij FJA, Ganesh SK, Huang J, Huang T, Yuan J, Hwang JY, Gross MD, Assimes TL, Miki T, Shu XO, Qi L, Chen YT, Lin X, Aung T, Wong TY, Teo YY, Kim BJ, Kato N, Tai ES. Multiple nonglycemic genomic loci are newly associated with blood level of glycated hemoglobin in East Asians. Diabetes 2014; 63:2551-62. [PMID: 24647736 PMCID: PMC4284402 DOI: 10.2337/db13-1815] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 03/08/2014] [Indexed: 11/13/2022]
Abstract
Glycated hemoglobin A1c (HbA1c) is used as a measure of glycemic control and also as a diagnostic criterion for diabetes. To discover novel loci harboring common variants associated with HbA1c in East Asians, we conducted a meta-analysis of 13 genome-wide association studies (GWAS; N = 21,026). We replicated our findings in three additional studies comprising 11,576 individuals of East Asian ancestry. Ten variants showed associations that reached genome-wide significance in the discovery data set, of which nine (four novel variants at TMEM79 [P value = 1.3 × 10(-23)], HBS1L/MYB [8.5 × 10(-15)], MYO9B [9.0 × 10(-12)], and CYBA [1.1 × 10(-8)] as well as five variants at loci that had been previously identified [CDKAL1, G6PC2/ABCB11, GCK, ANK1, and FN3KI]) showed consistent evidence of association in replication data sets. These variants explained 1.76% of the variance in HbA1c. Several of these variants (TMEM79, HBS1L/MYB, CYBA, MYO9B, ANK1, and FN3K) showed no association with either blood glucose or type 2 diabetes. Among individuals with nondiabetic levels of fasting glucose (<7.0 mmol/L) but elevated HbA1c (≥6.5%), 36.1% had HbA1c <6.5% after adjustment for these six variants. Our East Asian GWAS meta-analysis has identified novel variants associated with HbA1c as well as demonstrated that the effects of known variants are largely transferable across ethnic groups. Variants affecting erythrocyte parameters rather than glucose metabolism may be relevant to the use of HbA1c for diagnosing diabetes in these populations.
Collapse
Affiliation(s)
- Peng Chen
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | | | - Jong-Young Lee
- Center for Genome Science, National Institute of Health, Osong Health Technology Administration Complex, Chungcheongbuk-do, Republic of Korea
| | - Huaixing Li
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jer-Yuarn Wu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, TaiwanSchool of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Jun Liang
- Department of Endocrinology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical College, Affiliated Hospital of Southeast University, Xuzhou, Jiangsu, China
| | - Jirong Long
- Vanderbilt Epidemiology Center and Division of Epidemiology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Yasuharu Tabara
- Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Mark O Goodarzi
- Division of Endocrinology, Diabetes, and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Mark A Pereira
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Young Jin Kim
- Center for Genome Science, National Institute of Health, Osong Health Technology Administration Complex, Chungcheongbuk-do, Republic of Korea
| | - Min Jin Go
- Center for Genome Science, National Institute of Health, Osong Health Technology Administration Complex, Chungcheongbuk-do, Republic of Korea
| | - Daniel O Stram
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Eranga Vithana
- Singapore Eye Research Institute, Singapore National Eye Centre, SingaporeNeuroscience and Behavioural Disorders (NBD) Program, Duke-National University of Singapore Graduate Medical School, Singapore
| | - Chiea-Chuen Khor
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeDepartment of Ophthalmology, National University of Singapore, SingaporeGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, SingaporeDepartment of Paediatrics, National University of Singapore, Singapore
| | - Jianjun Liu
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore
| | - Jiemin Liao
- Singapore Eye Research Institute, Singapore National Eye Centre, SingaporeDepartment of Ophthalmology, National University of Singapore, Singapore
| | - Xingwang Ye
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yiqin Wang
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Ling Lu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Terri L Young
- Neuroscience and Behavioural Disorders (NBD) Program, Duke-National University of Singapore Graduate Medical School, SingaporeDuke Eye Center, Duke University Medical Center, Durham, NC
| | - Jeannette Lee
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Ah Chuan Thai
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ching-Yu Cheng
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeSingapore Eye Research Institute, Singapore National Eye Centre, SingaporeDepartment of Ophthalmology, National University of Singapore, SingaporeCentre for Quantitative Medicine, Office of Clinical Sciences, Duke-National University of Singapore Graduate Medical School, Singapore
| | - Rob M van Dam
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | - Chew-Kiat Heng
- Department of Paediatrics, National University of Singapore, Singapore
| | - Woon-Puay Koh
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeDuke-National University of Singapore Graduate Medical School, Singapore
| | - Chien-Hsiun Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, TaiwanSchool of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Li-Ching Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Wen-Harn Pan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Qibin Qi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY
| | - Masato Isono
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Wei Zheng
- Vanderbilt Epidemiology Center and Division of Epidemiology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Qiuyin Cai
- Vanderbilt Epidemiology Center and Division of Epidemiology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Yutang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | - Ken Yamamoto
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Keizo Ohnaka
- Department of Geriatric Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ryoichi Takayanagi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshikuni Kita
- Department of Health Science, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan
| | - Hirotsugu Ueshima
- Department of Health Science, and Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan
| | - Chao A Hsiung
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
| | - Jinrui Cui
- Division of Endocrinology, Diabetes, and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Wayne H-H Sheu
- Division of Endocrine and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, TaiwanSchool of Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Jerome I Rotter
- Institute for Translational Genomics and Biomedical Sciences, Los Angeles Biomedical Research Institute, Harbor-University of California, Los Angeles Medical Center, Torrance, CA
| | - Yii-Der I Chen
- Institute for Translational Genomics and Biomedical Sciences, Los Angeles Biomedical Research Institute, Harbor-University of California, Los Angeles Medical Center, Torrance, CA
| | - Chris Hsu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Yukinori Okada
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, JapanLaboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Michiaki Kubo
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Atsushi Takahashi
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Toshihiro Tanaka
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, JapanLaboratory for Cardiovascular Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Frank J A van Rooij
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Santhi K Ganesh
- Departments of Internal Medicine and Human Genetics, University of Michigan, Ann Arbor, MI
| | - Jinyan Huang
- Department of Epidemiology, Harvard School of Public Health, Boston, MA
| | - Tao Huang
- Department of Epidemiology, Harvard School of Public Health, Boston, MA
| | - Jianmin Yuan
- University of Pittsburgh Cancer Institute, Pittsburgh, PA
| | - Joo-Yeon Hwang
- Center for Genome Science, National Institute of Health, Chungcheongbuk-do, Republic of Korea
| | - Myron D Gross
- Department of Laboratory Medicine and Pathology, Medical School, University of Minnesota, Minneapolis, MN
| | | | - Tetsuro Miki
- Department of Geriatric Medicine, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Xiao-Ou Shu
- Vanderbilt Epidemiology Center and Division of Epidemiology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Lu Qi
- Department of Nutrition, Harvard School of Public Health, Boston, MAChanning Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Yuan-Tson Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, TaiwanDepartment of Pediatrics, Duke University Medical Center, Durham, NC
| | - Xu Lin
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Tin Aung
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore
| | - Tien-Yin Wong
- Singapore Eye Research Institute, Singapore National Eye Centre, SingaporeDepartment of Ophthalmology, National University of Singapore, Singapore
| | - Yik-Ying Teo
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeSingapore Eye Research Institute, Singapore National Eye Centre, SingaporeGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, SingaporeNUS Graduate School for Integrative Science and Engineering, National University of Singapore, SingaporeDepartment of Statistics and Applied Probability, National University of Singapore, Singapore
| | - Bong-Jo Kim
- Center for Genome Science, National Institute of Health, Osong Health Technology Administration Complex, Chungcheongbuk-do, Republic of Korea
| | - Norihiro Kato
- National Center for Global Health and Medicine, Tokyo, Japan
| | - E-Shyong Tai
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, SingaporeDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, SingaporeDuke-National University of Singapore Graduate Medical School, Singapore
| |
Collapse
|
21
|
Modeling combined schizophrenia-related behavioral and metabolic phenotypes in rodents. Behav Brain Res 2014; 276:130-42. [PMID: 24747658 DOI: 10.1016/j.bbr.2014.04.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/08/2014] [Accepted: 04/09/2014] [Indexed: 12/11/2022]
Abstract
Schizophrenia is a chronic, debilitating disorder with a complex behavioral and cognitive phenotype underlined by a similarly complex etiology involving an interaction between susceptibility genes and environmental factors during early development. Limited progress has been made in developing novel pharmacotherapy, partly due to a lack of valid animal models. The recent recognition of the potentially causal role of central and peripheral energy metabolism in the pathophysiology of schizophrenia raises the need of research on animal models that combine both behavioral and metabolic phenotypic domains, similar to what have been identified in humans. In this review we focus on selected genetic (DBA/2J mice, leptin receptor mutants, and PSD-93 knockout mice), early neurodevelopmental (maternal protein deprivation) and pharmacological (acute phencyclidine) animal models that capture the combined behavioral and metabolic abnormalities shown by schizophrenic patients. In reviewing behavioral phenotypes relevant to schizophrenia we apply the principles established by the Research Domain Criteria (RDoC) for better translation. We demonstrate that etiologically diverse manipulations such as specific breeding, deletion of genes that are primarily involved in metabolic regulation and in synaptic plasticity, as well as early metabolic deprivation and adult pharmacological challenge of the glutamate system can lead to schizophrenia-related behavioral and metabolic phenotypes, which suggest that these pathways might be interlinked. We propose that using animal models that combine different domains of schizophrenia can be used as a translationally valid approach to capture the system-level complex interplay between peripheral and central processes in the development of psychopathology.
Collapse
|
22
|
Asai A, Chou PM, Bu HF, Wang X, Rao MS, Jiang A, DiDonato CJ, Tan XD. Dissociation of hepatic insulin resistance from susceptibility of nonalcoholic fatty liver disease induced by a high-fat and high-carbohydrate diet in mice. Am J Physiol Gastrointest Liver Physiol 2014; 306:G496-504. [PMID: 24436353 PMCID: PMC3949024 DOI: 10.1152/ajpgi.00291.2013] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Liver steatosis in nonalcoholic fatty liver disease is affected by genetics and diet. It is associated with insulin resistance (IR) in hepatic and peripheral tissues. Here, we aimed to characterize the severity of diet-induced steatosis, obesity, and IR in two phylogenetically distant mouse strains, C57BL/6J and DBA/2J. To this end, mice (male, 8 wk old) were fed a high-fat and high-carbohydrate (HFHC) or control diet for 16 wk followed by the application of a combination of classic physiological, biochemical, and pathological studies to determine obesity and hepatic steatosis. Peripheral IR was characterized by measuring blood glucose level, serum insulin level, homeostasis model assessment of IR, glucose intolerance, insulin intolerance, and AKT phosphorylation in adipose tissues, whereas the level of hepatic IR was determined by measuring insulin-triggered hepatic AKT phosphorylation. We discovered that both C57BL/6J and DBA/2J mice developed obesity to a similar degree without the feature of liver inflammation after being fed an HFHC diet for 16 wk. C57BL/6J mice in the HFHC diet group exhibited severe pan-lobular steatosis, a marked increase in hepatic triglyceride levels, and profound peripheral IR. In contrast, DBA/2J mice in the HFHC diet group developed only a mild degree of pericentrilobular hepatic steatosis that was associated with moderate changes in peripheral IR. Interestingly, both C57BL/6J and DBA/2J developed severe hepatic IR after HFHC diet treatment. Collectively, these data suggest that the severity of diet-induced hepatic steatosis is correlated to the level of peripheral IR, not with the severity of obesity and hepatic IR. Peripheral rather than hepatic IR is a dominant factor of pathophysiology in nonalcoholic fatty liver disease.
Collapse
Affiliation(s)
- Akihiro Asai
- 1Center for Intestinal and Liver Inflammation Research, Ann & Robert H. Lurie Children's Hospital of Chicago Research Center and ,2Departments of Pediatrics and
| | - Pauline M. Chou
- 3Pathology, Feinberg School of Medicine, Northwestern University, Chicago; and
| | - Heng-Fu Bu
- 1Center for Intestinal and Liver Inflammation Research, Ann & Robert H. Lurie Children's Hospital of Chicago Research Center and ,2Departments of Pediatrics and
| | - Xiao Wang
- 1Center for Intestinal and Liver Inflammation Research, Ann & Robert H. Lurie Children's Hospital of Chicago Research Center and ,2Departments of Pediatrics and
| | - M. Sambasiva Rao
- 3Pathology, Feinberg School of Medicine, Northwestern University, Chicago; and
| | - Anthony Jiang
- 1Center for Intestinal and Liver Inflammation Research, Ann & Robert H. Lurie Children's Hospital of Chicago Research Center and
| | | | - Xiao-Di Tan
- 1Center for Intestinal and Liver Inflammation Research, Ann & Robert H. Lurie Children's Hospital of Chicago Research Center and ,2Departments of Pediatrics and ,3Pathology, Feinberg School of Medicine, Northwestern University, Chicago; and ,4Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| |
Collapse
|
23
|
Momordica charantia (Bitter Melon) reduces obesity-associated macrophage and mast cell infiltration as well as inflammatory cytokine expression in adipose tissues. PLoS One 2013; 8:e84075. [PMID: 24358329 PMCID: PMC3866167 DOI: 10.1371/journal.pone.0084075] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 11/19/2013] [Indexed: 01/09/2023] Open
Abstract
Obesity is a world-wide epidemic disease that correlates closely with type 2 diabetes and cardiovascular diseases. Obesity-induced chronic adipose tissue inflammation is now considered as a critical contributor to the above complications. Momordica charantia (bitter melon, BM) is a traditional Chinese food and well known for its function of reducing body weight gain and insulin resistance. However, it is unclear whether BM could alleviate adipose tissue inflammation caused by obesity. In this study, C57BL/6 mice were fed high fat diet (HFD) with or without BM for 12 weeks. BM-contained diets ameliorated HFD-induced obesity and insulin resistance. Histological and real-time PCR analysis demonstrated BM not only reduced macrophage infiltration into epididymal adipose tissues (EAT) and brown adipose tissues (BAT). Flow cytometry show that BM could modify the M1/M2 phenotype ratio of macrophages in EAT. Further study showed that BM lowered mast cell recruitments in EAT, and depressed pro-inflammatory cytokine monocyte chemotactic protein-1 (MCP-1) expression in EAT and BAT as well as interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) expression in EAT. Finally, ELISA analysis showed BM-contained diets also normalized serum levels of the cytokines. In summary, in concert with ameliorated insulin resistance and fat deposition, BM reduced adipose tissue inflammation in diet-induced obese (DIO) mice.
Collapse
|
24
|
ATR-FTIR spectroscopy reveals genomic loci regulating the tissue response in high fat diet fed BXD recombinant inbred mouse strains. BMC Genomics 2013; 14:386. [PMID: 23758785 PMCID: PMC3717084 DOI: 10.1186/1471-2164-14-386] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Accepted: 05/20/2013] [Indexed: 12/14/2022] Open
Abstract
Background Obesity-associated organ-specific pathological states can be ensued from the dysregulation of the functions of the adipose tissues, liver and muscle. However, the influence of genetic differences underlying gross-compositional differences in these tissues is largely unknown. In the present study, the analytical method of ATR-FTIR spectroscopy has been combined with a genetic approach to identify genetic differences responsible for phenotypic alterations in adipose, liver and muscle tissues. Results Mice from 29 BXD recombinant inbred mouse strains were put on high fat diet and gross-compositional changes in adipose, liver and muscle tissues were measured by ATR-FTIR spectroscopy. The analysis of genotype-phenotype correlations revealed significant quantitative trait loci (QTL) on chromosome 12 for the content of fat and collagen, collagen integrity, and the lipid to protein ratio in adipose tissue and on chromosome 17 for lipid to protein ratio in liver. Using gene expression and sequence information, we suggest Rsad2 (viperin) and Colec11 (collectin-11) on chromosome 12 as potential quantitative trait candidate genes. Rsad2 may act as a modulator of lipid droplet contents and lipid biosynthesis; Colec11 might play a role in apoptopic cell clearance and maintenance of adipose tissue. An increased level of Rsad2 transcripts in adipose tissue of DBA/2J compared to C57BL/6J mice suggests a cis-acting genetic variant leading to differential gene activation. Conclusion The results demonstrate that the analytical method of ATR-FTIR spectroscopy effectively contributed to decompose the macromolecular composition of tissues that accumulate fat and to link this information with genetic determinants. The candidate genes in the QTL regions may contribute to obesity-related diseases in humans, in particular if the results can be verified in a bigger BXD cohort.
Collapse
|
25
|
Chen GL, Miller GM. Tryptophan hydroxylase-2: an emerging therapeutic target for stress disorders. Biochem Pharmacol 2013; 85:1227-33. [PMID: 23435356 DOI: 10.1016/j.bcp.2013.02.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 02/11/2013] [Accepted: 02/12/2013] [Indexed: 12/18/2022]
Abstract
Serotonin (5-HT) has been long recognized to modulate the stress response, and dysfunction of 5-HT has been implicated in numerous stress disorders. Accordingly, the 5-HT system has been targeted for the treatment of stress disorders. Tryptophan hydroxylase (TPH) is the rate-limiting enzyme in 5-HT synthesis, and the recent identification of a second, neuron-specific TPH isoform (TPH2) opened up a new area of research. With a decade of extensive investigation, it is now recognized that: (1) TPH2 exhibits a highly flexible gene expression that is modulated by an increasing number of internal and external environmental factors including the biological clock, stressors, endogenous hormones, and antidepressant therapies; and (2) genetically determined TPH2 activity is linked to a growing body of stress-related neuronal correlates and behavioral traits. These findings reveal an active role of TPH2 in the stress response and provide new insights into the long recognized but not yet fully understood 5-HT-stress interaction. As a major modulator of 5-HT neurotransmission and the stress response, TPH2 is of both pathophysiological and pharmacological significance, and is emerging as a new therapeutic target for the treatment of stress disorders. Given that numerous antidepressant therapies influence TPH2 gene expression, TPH2 is already inadvertently targeted for the treatment of stress disorders. With increased understanding of the regulation of TPH2 activity we can now purposely utilize TPH2 as a target to develop new or optimize current therapies, which are expected to greatly improve the prevention and treatment of a wide variety of stress disorders.
Collapse
Affiliation(s)
- Guo-Lin Chen
- Harvard Medical School, New England Primate Research Center, Division of Neuroscience, One Pine Hill Drive, Southborough, MA 01772-9102, USA.
| | | |
Collapse
|
26
|
Grès S, Canteiro S, Mercader J, Carpéné C. Oxidation of high doses of serotonin favors lipid accumulation in mouse and human fat cells. Mol Nutr Food Res 2013; 57:1089-99. [DOI: 10.1002/mnfr.201200681] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 12/04/2012] [Accepted: 12/21/2012] [Indexed: 01/25/2023]
Affiliation(s)
| | - Sarah Canteiro
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC); Université de Toulouse; UPS; Toulouse; France
| | - Josep Mercader
- Institut National de la Santé et de la Recherche Médicale; INSERM U1048; Toulouse; France
| | | |
Collapse
|
27
|
Grès S, Gomez-Zorita S, Gomez-Ruiz A, Carpéné C. 5-hydroxytryptamine actions in adipocytes: involvement of monoamine oxidase-dependent oxidation and subsequent PPARγ activation. J Neural Transm (Vienna) 2012; 120:919-26. [PMID: 23271029 DOI: 10.1007/s00702-012-0959-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 12/11/2012] [Indexed: 11/26/2022]
Abstract
Serotonin (5-HT) is a brain neurotransmitter instrumental for the antidepressant action of selective inhibitors of serotonin reuptake (SSRIs) while it also plays important roles in peripheral organs. Recently, the 5-HT oxidation products, 5-hydroxyindoleacetate and 5-methoxy-indoleacetate, have been shown to bind to peroxisome proliferator-activated receptor γ (PPARγ) and to enhance lipid accumulation in preadipocytes. Since we already reported that adipocytes exhibit elevated monoamine oxidase (MAO) and primary amine oxidase activities, we verified how adipocytes readily oxidize 5-HT, with the objective to determine whether such oxidation promotes PPARγ activation and lipid storage. To this aim, serotonin was tested on cultured 3T3 F442A preadipocytes and on human adipocytes. Results showed that 5-HT was oxidized by MAO in both models. Daily treatment of 3T3 F442A preadipocytes for 8 days with 100-500 μM 5-HT promoted triglyceride accumulation and emergence of adipogenesis markers. At 250 μM, 5-HT alone reproduced half of 50 nM insulin-induced adipogenesis, and exhibited an additive differentiating effect when combined with insulin. Moreover, the 5-HT-induced expression of PPARγ-responsive genes (PEPCK, aP2/FABP4) was blocked by GW 9662, a PPARγ-inhibitor, or by pargyline, a MAO-inhibitor. In human fat cells, 6-h exposure to 100 μM 5-HT increased PEPCK expression as did the PPARγ-agonist rosiglitazone. Since hydrogen peroxide, another amine oxidation product, did not reproduce such enhancement, we propose that serotonin can promote PPARγ activation in fat cells, via the indoleacetate produced during MAO-dependent oxidation. Such pathway could be involved in the adverse effects of several antidepressant SSRIs on body weight gain.
Collapse
Affiliation(s)
- Sandra Grès
- Université de Toulouse, UPS, Institut de Médecine Moléculaire de Rangueil (I2MC), Toulouse, France
| | | | | | | |
Collapse
|
28
|
Almon RR, Dubois DC, Sukumaran S, Wang X, Xue B, Nie J, Jusko WJ. Effects of high fat feeding on liver gene expression in diabetic goto-kakizaki rats. GENE REGULATION AND SYSTEMS BIOLOGY 2012; 6:151-68. [PMID: 23236253 PMCID: PMC3516129 DOI: 10.4137/grsb.s10371] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Effects of high fat diet (HFD) on obesity and, subsequently, on diabetes are highly variable and modulated by genetics in both humans and rodents. In this report, we characterized the response of Goto-Kakizaki (GK) rats, a spontaneous polygenic model for lean diabetes and healthy Wistar-Kyoto (WKY) controls, to high fat feeding from weaning to 20 weeks of age. Animals fed either normal diet or HFD were sacrificed at 4, 8, 12, 16 and 20 weeks of age and a wide array of physiological measurements were made along with gene expression profiling using Affymetrix gene array chips. Mining of the microarray data identified differentially regulated genes (involved in inflammation, metabolism, transcription regulation, and signaling) in diabetic animals, as well as the response of both strains to HFD. Functional annotation suggested that HFD increased inflammatory differences between the two strains. Chronic inflammation driven by heightened innate immune response was identified to be present in GK animals regardless of diet. In addition, compensatory mechanisms by which WKY animals on HFD resisted the development of diabetes were identified, thus illustrating the complexity of diabetes disease progression.
Collapse
Affiliation(s)
- Richard R Almon
- Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY, USA. ; Department of Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA. ; New York State Center of Excellence in Bioinformatics and Life Sciences
| | | | | | | | | | | | | |
Collapse
|
29
|
Fromm-Dornieden C, Lytovchenko O, von der Heyde S, Behnke N, Hogl S, Berghoff J, Köpper F, Opitz L, Renne U, Hoeflich A, Beissbarth T, Brenig B, Baumgartner BG. Extrinsic and intrinsic regulation of DOR/TP53INP2 expression in mice: effects of dietary fat content, tissue type and sex in adipose and muscle tissues. Nutr Metab (Lond) 2012; 9:86. [PMID: 22995226 PMCID: PMC3497704 DOI: 10.1186/1743-7075-9-86] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 09/17/2012] [Indexed: 12/18/2022] Open
Abstract
Background DOR/TP53INP2 acts both at the chromosomal level as a nuclear co-factor e.g. for the thyroid hormone receptor and at the extrachromosomal level as an organizing factor of the autophagosome. In a previous study, DOR was shown to be down-regulated in skeletal muscle of obese diabetic Zucker fa/fa rats. Methods To identify sites of differential DOR expression in metabolically active tissues, we measured differences in DOR expression in white adipose tissue (WAT), brown adipose tissue (BAT), skeletal muscle (SM) and heart muscle (HM) by qPCR. To assess whether DOR expression is influenced in the short term by nutritional factors, NMRI mice were fed different fat rich diets (fat diet, FD: 18% or high fat diet, HFD: 80% fat) for one week and DOR expression was compared to NMRI mice fed a control diet (normal diet, ND: 3.3% fat). Additionally, DOR expression was measured in young (45 days old) and adult (100 days old) genetically obese (DU6/DU6i) mice and compared to control (DUKs/DUKsi) animals. Results ANOVA results demonstrate a significant influence of diet, tissue type and sex on DOR expression in adipose and muscle tissues of FD and HFD mice. In SM, DOR expression was higher in HFD than in FD male mice. In WAT, DOR expression was increased compared to BAT in male FD and HFD mice. In contrast, expression levels in female mice were higher in BAT for both dietary conditions. DOR expression levels in all tissues of 100 days old genetically obese animals were mainly influenced by sex. In HM, DOR expression was higher in male than female animals. Conclusions DOR expression varies under the influence of dietary fat content, tissue type and sex. We identified target tissues for further studies to analyze the specific function of DOR in obesity. DOR might be part of a defense mechanism against fat storage in high fat diets or obesity.
Collapse
Affiliation(s)
- Carolin Fromm-Dornieden
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Oleksandr Lytovchenko
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Silvia von der Heyde
- Statistical Bioinformatics, Department of Medical Statistics, University Medical Center Göttingen, Humboldtallee 32, 37073, Göttingen, Germany
| | - Nina Behnke
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Sebastian Hogl
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Janina Berghoff
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Frederik Köpper
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Lennart Opitz
- DNA Microarray Facility, Department of Developmental Biochemistry, University of Göttingen, Humboldtallee 23, 37073, Göttingen, Germany
| | - Ulla Renne
- Research Units Genetics & Biometry, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Andreas Hoeflich
- Research Units Genetics & Biometry, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Tim Beissbarth
- Statistical Bioinformatics, Department of Medical Statistics, University Medical Center Göttingen, Humboldtallee 32, 37073, Göttingen, Germany
| | - Bertram Brenig
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Bernhard G Baumgartner
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany.,Department of Internal Medicine, Metabolic Diseases and Medical Molecular Biology, Paracelsus Private Medical University Salzburg, Müllner Hauptstr. 48, 5020, Salzburg, Austria
| |
Collapse
|
30
|
Bermejo-Alvarez P, Rosenfeld CS, Roberts RM. Effect of maternal obesity on estrous cyclicity, embryo development and blastocyst gene expression in a mouse model. Hum Reprod 2012; 27:3513-22. [PMID: 23001779 DOI: 10.1093/humrep/des327] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
STUDY QUESTION Does maternal obesity affect estrous cyclicity, embryo development and blastocyst gene expression in mice? SUMMARY ANSWER Maternal obesity alters estrous cyclicity and causes the down-regulation of two key metabolite receptors (Slc2a1 and Ldlr) in blastocysts recovered from diet-induced obese females, but embryo development is not affected. WHAT IS KNOWN ALREADY Maternal obesity reduces fertility because of effects in the periconception period, but its negative influence is on estrous cyclicity, oocyte quality or embryo development. STUDY DESIGN, SIZE AND DURATION This was a randomized study based on a mouse model for obesity. Twenty-one outbred NIH Swiss mice were used and obesity was induced by a diet high in fat administered for 12 weeks prior to breeding to control males. MATERIAL, SETTING AND METHODS Females were fed either a control diet (C, n = 9) or a diet high in fat [diet-induced obesity (DiO), n = 12] for 12 weeks, and were then co-housed with fertile males. Mice that failed to breed during 20 consecutive days were considered infertile. Control and diet-induced obese females that demonstrated vaginal plugs were euthanized 3.5 days after mating, blood was sampled for glucose and hormone measurements, corpora lutea counted and embryos recovered; the relative mRNA abundance of 11 candidate genes was determined in blastocysts by qPCR. MAIN RESULTS AND THE ROLE OF CHANCE Five DiO females failed to breed and displayed anovulatory ovaries (DiOI), whereas the other seven DiO females (DiOF) could breed, albeit over an extended period compared with controls. DiOF weighed significantly less than DiOI. Both groups had elevated serum insulin compared with C, although blood glucose level was only significantly higher than that in controls in the infertile DiOI group. Adiponectin was lower in the DiOI and leptin higher in both the DiOI and DiOF mice than in C. DiOF ovulated the same number of oocytes as C, and embryo development to blastocyst was normal. The expression of genes encoding metabolic hormone receptors (Insr, Igf1r, Igf2r, Adipor1, Adipor2 and Lepr) and key metabolic enzymes (Gapdh, Cpt1a and Sod2) did not differ between DiOF and C blastocysts, but that of metabolite receptors (Slc2a1 and Ldr) was down-regulated in DiOF. To limit the role of chance, the experiments were conducted in a defined laboratory setting with the proper controls, and the animals were randomly assigned to each experimental group. Moreover, a P-value of < 0.05 was chosen to determine whether the differences observed between the groups were statistically significant. LIMITATIONS AND REASONS FOR CAUTION The results obtained may not fully extrapolate to humans. Also, as follicular activity was not monitored while breeding, so the extended breeding period for DiOF group might be explained by behavioral abnormalities occurring in normal cycling animals. WIDER IMPLICATIONS OF THE FINDINGS DiO alters the estrous cycle in the mouse model and demonstrates a role of obesity in infertility. The data also suggest that in an outbred, genetically diverse population, such as the human, individual susceptibility to obesity and associated infertility induced by diet exists. The apparently normal development to blastocyst observed in fertile, obese females suggests that preimplantation embryos can resist potentially adverse outcomes caused by an oversupply of fatty acids and glucose under in vivo conditions. This metabolic plasticity may, in part, be due to an ability to down-regulate metabolite transporters, thereby preventing excessive nutrient uptake. STUDY FUNDING/COMPETING INTEREST(S) The research was supported by funds from the University of Missouri, grants from the National Institutes of Health and by a fellowship from the Lalor Foundation. There were no competing interests. TRIAL REGISTRATION NUMBER Not applicable.
Collapse
Affiliation(s)
- Pablo Bermejo-Alvarez
- Bond Life Sciences Center, University of Missouri, 263a Life Sciences Center, 1201 Rollins St, Columbia, MO 65211, USA.
| | | | | |
Collapse
|
31
|
Chen GL, Miller GM. Advances in tryptophan hydroxylase-2 gene expression regulation: new insights into serotonin-stress interaction and clinical implications. Am J Med Genet B Neuropsychiatr Genet 2012; 159B:152-71. [PMID: 22241550 PMCID: PMC3587664 DOI: 10.1002/ajmg.b.32023] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Serotonin (5-HT) modulates the stress response by interacting with the hormonal hypothalamic-pituitary-adrenal (HPA) axis and neuronal sympathetic nervous system (SNS). Tryptophan hydroxylase (TPH) is the rate-limiting enzyme in 5-HT biosynthesis, and the recent identification of a second, neuron-specific TPH isoform (TPH2) opened up a new area of research. While TPH2 genetic variance has been linked to numerous behavioral traits and disorders, findings on TPH2 gene expression have not only reinforced, but also provided new insights into, the long-recognized but not yet fully understood 5-HT-stress interaction. In this review, we summarize advances in TPH2 expression regulation and its relevance to the stress response and clinical implications. Particularly, based on findings on rhesus monkey TPH2 genetics and other relevant literature, we propose that: (i) upon activation of adrenal cortisol secretion, the cortisol surge induces TPH2 expression and de novo 5-HT synthesis; (ii) the induced 5-HT in turn inhibits cortisol secretion by modulating the adrenal sensitivity to ACTH via the suprachiasmatic nuclei (SCN)-SNS-adrenal system, such that it contributes to the feedback inhibition of cortisol production; (iii) basal TPH2 expression or 5-HT synthesis, as well as early-life experience, influence basal cortisol primarily via the hormonal HPA axis; and (iv) 5'- and 3'-regulatory polymorphisms of TPH2 may differentially influence the stress response, presumably due to their differential roles in gene expression regulation. Our increasing knowledge of TPH2 expression regulation not only helps us better understand the 5-HT-stress interaction and the pathophysiology of neuropsychiatric disorders, but also provides new strategies for the treatment of stress-associated diseases.
Collapse
Affiliation(s)
- Guo-Lin Chen
- Harvard Medical School, New England Primate Research Center, Division of Neuroscience, Southborough, MA 01772-9102, USA.
| | | |
Collapse
|
32
|
Fitzgibbons TP, Kogan S, Aouadi M, Hendricks GM, Straubhaar J, Czech MP. Similarity of mouse perivascular and brown adipose tissues and their resistance to diet-induced inflammation. Am J Physiol Heart Circ Physiol 2011; 301:H1425-37. [PMID: 21765057 DOI: 10.1152/ajpheart.00376.2011] [Citation(s) in RCA: 227] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Thoracic perivascular adipose tissue (PVAT) is a unique adipose depot that likely influences vascular function and susceptibility to pathogenesis in obesity and the metabolic syndrome. Surprisingly, PVAT has been reported to share characteristics of both brown and white adipose, but a detailed direct comparison to interscapular brown adipose tissue (BAT) has not been performed. Here we show by full genome DNA microarray analysis that global gene expression profiles of PVAT are virtually identical to BAT, with equally high expression of Ucp-1, Cidea, and other genes known to be uniquely or very highly expressed in BAT. PVAT and BAT also displayed nearly identical phenotypes upon immunohistochemical analysis, and electron microscopy confirmed that PVAT contained multilocular lipid droplets and abundant mitochondria. Compared with white adipose tissue (WAT), PVAT and BAT from C57BL6/J mice fed a high-fat diet for 13 wk had markedly lower expression of immune cell-enriched mRNAs, suggesting resistance to obesity-induced inflammation. Indeed, staining of BAT and PVAT for macrophage markers (F4/80 and CD68) in obese mice showed virtually no macrophage infiltration, and FACS analysis of BAT confirmed the presence of very few CD11b(+)/CD11c(+) macrophages in BAT (1.0%) compared with WAT (31%). In summary, murine PVAT from the thoracic aorta is virtually identical to interscapular BAT, is resistant to diet-induced macrophage infiltration, and thus may play an important role in protecting the vascular bed from inflammatory stress.
Collapse
Affiliation(s)
- Timothy P Fitzgibbons
- Program in Molecular Medicine, Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA
| | | | | | | | | | | |
Collapse
|
33
|
Vedell PT, Svenson KL, Churchill GA. Stochastic variation of transcript abundance in C57BL/6J mice. BMC Genomics 2011; 12:167. [PMID: 21450099 PMCID: PMC3082245 DOI: 10.1186/1471-2164-12-167] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2010] [Accepted: 03/30/2011] [Indexed: 12/13/2022] Open
Abstract
Background Transcripts can exhibit significant variation in tissue samples from inbred laboratory mice. We have designed and carried out a microarray experiment to examine transcript variation across samples from adipose, heart, kidney, and liver tissues of C57BL/6J mice and to partition variation into within-mouse and between-mouse components. Within-mouse variance captures variation due to heterogeneity of gene expression within tissues, RNA-extraction, and array processing. Between-mouse variance reflects differences in transcript abundance between genetically identical mice. Results The nature and extent of transcript variation differs across tissues. Adipose has the largest total variance and the largest within-mouse variance. Liver has the smallest total variance, but it has the most between-mouse variance. Genes with high variability can be classified into groups with correlated patterns of expression that are enriched for specific biological functions. Variation between mice is associated with circadian rhythm, growth hormone signaling, immune response, androgen regulation, lipid metabolism, and the extracellular matrix. Genes showing correlated patterns of within-mouse variation are also associated with biological functions that largely reflect heterogeneity of cell types within tissues. Conclusions Genetically identical mice can experience different individual outcomes for medically important traits. Variation in gene expression observed between genetically identical mice can identify functional classes of genes that are likely to vary in the absence of experimental perturbations, can inform experimental design decisions, and provides a baseline for the interpretation of gene expression data in interventional studies. The extent of transcript variation among genetically identical mice underscores the importance of stochastic and micro-environmental factors and their phenotypic consequences.
Collapse
|
34
|
Zhang X, Xu A, Chung SK, Cresser JH, Sweeney G, Wong RL, Lin A, Lam KS. Selective inactivation of c-Jun NH2-terminal kinase in adipose tissue protects against diet-induced obesity and improves insulin sensitivity in both liver and skeletal muscle in mice. Diabetes 2011; 60:486-95. [PMID: 21270260 PMCID: PMC3028348 DOI: 10.2337/db10-0650] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Obesity is associated with increased activation of the c-Jun NH(2)-terminal kinase (JNK) in several metabolic organs, including adipose tissue, liver, and skeletal muscle. In this study, we aimed to define the role of JNK activation in adipose tissue in the development of obesity-related insulin resistance. RESEARCH DESIGN AND METHODS Transgenic mice with adipose tissue-specific overexpression of dominant-negative JNK (ap2-dn-JNK) under the transcriptional control of the aP2 gene promoter were generated and subjected to metabolic characterization together with the wild-type littermates. RESULTS On a high-fat diet (HFD), the ap2-dn-JNK mice displayed a marked suppression of both JNK1 and JNK2 activation in their adipose tissue, accompanied by a marked reduction in weight gain, fat mass, and size of the adipocytes. The transgenic mice were resistant to the deleterious impact of an HFD on systemic insulin sensitivity, glucose tolerance, and hepatic steatosis. Reduced hepatic gluconeogenesis was evident in in vivo and ex vivo studies and showed greater insulin-induced glucose uptake in skeletal muscles. These changes were accompanied by reduced macrophage infiltration in adipose tissue, decreased production of proinflammatory adipokines, and increased expression of adiponectin. Indirect calorimetry analysis showed that the transgenic mice had significant increases in oxygen consumption and reductions in respiration exchange rates compared with their wild-type littermates. CONCLUSIONS Selective suppression of JNK activation in adipose tissue alone is sufficient to counteract HFD-induced obesity and its associated metabolic dysregulations, in part through an increase in energy expenditure and a decrease in systemic inflammation.
Collapse
Affiliation(s)
- Xinmei Zhang
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Research Center of Heart, Brain, Hormone, and Healthy Ageing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
| | - Aimin Xu
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Research Center of Heart, Brain, Hormone, and Healthy Ageing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Corresponding author: Karen Lam, , or Aimin Xu,
| | - Sookja K. Chung
- Research Center of Heart, Brain, Hormone, and Healthy Ageing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Department of Anatomy, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
| | | | - Gary Sweeney
- Department of Biology, York University, Toronto, Canada
| | - Rachel L.C. Wong
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
| | - Anning Lin
- Ben May Department for Cancer Research, University of Chicago, Chicago, Illinois
| | - Karen S.L. Lam
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Research Center of Heart, Brain, Hormone, and Healthy Ageing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
- Corresponding author: Karen Lam, , or Aimin Xu,
| |
Collapse
|
35
|
Abstract
MOTIVATION Bead arrays are becoming a popular platform for high-throughput expression arrays. However, the number of the beads targeting a transcript and the variation of their intensities differ from sample to sample in these arrays. This property results in different accuracy of expression intensities of a transcript across arrays. RESULTS We provide evidence, with publicly available spike-in data, that the false discovery rate of differential expression is reduced by modeling bead-level variability with a multi-level mixed effects model. We compare the performance of our proposed model to existing analysis methods for bead arrays: the unweighted t-test and other weighted methods. Additionally, we provide theoretical insights into when the multi-level mixed effects model outperforms other methods. Finally, we provide a software program for differential expression analysis using the multi-level mixed effects model that analyzes tens of thousands of genes efficiently. AVAILABILITY The software program is freely available on web at http://ephpublic.aecom.yu.edu/sites/rkim/Supplementary.
Collapse
Affiliation(s)
- Ryung S Kim
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| | | |
Collapse
|
36
|
Wagener A, Goessling HF, Schmitt AO, Mauel S, Gruber AD, Reinhardt R, Brockmann GA. Genetic and diet effects on Ppar-α and Ppar-γ signaling pathways in the Berlin Fat Mouse Inbred line with genetic predisposition for obesity. Lipids Health Dis 2010; 9:99. [PMID: 20831792 PMCID: PMC2944240 DOI: 10.1186/1476-511x-9-99] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Accepted: 09/10/2010] [Indexed: 11/20/2022] Open
Abstract
Background The Berlin Fat Mouse Inbred (BFMI) line is a new mouse model for obesity, which was long-term selected for high fatness. Peroxisome proliferator-activated receptors (PPARs) are involved in the control of energy homeostasis, nutrient metabolism and cell proliferation. Here, we studied the expression patterns of the different Ppar genes and the genes in the PPAR pathway in the BFMI line in comparison to physiological changes. Results At the age of 10 weeks, the BFMI mice exhibited marked obesity with enlarged adipocytes and high serum triglycerides concentrations in comparison to the often used mouse line C57BL/6 (B6). Between these two lines, gene expression analyses revealed differentially expressed genes belonging to the PPAR pathway, in particular genes of the lipogenesis and the fatty acid transport. Conclusion Surprisingly, the Ppar-α gene expression was up-regulated in liver and Ppar-γ gene expression was down-regulated in the white adipose tissue, indicating the activation of a mechanism that counteracts the rise of obesity.
Collapse
Affiliation(s)
- Asja Wagener
- Humboldt-Universität zu Berlin, Department for Crop and Animal Sciences, Invalidenstraße 42, 10115 Berlin, Germany
| | | | | | | | | | | | | |
Collapse
|
37
|
Swindell WR, Johnston A, Gudjonsson JE. Transcriptional profiles of leukocyte populations provide a tool for interpreting gene expression patterns associated with high fat diet in mice. PLoS One 2010; 5:e11861. [PMID: 20686622 PMCID: PMC2912331 DOI: 10.1371/journal.pone.0011861] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Accepted: 07/05/2010] [Indexed: 12/24/2022] Open
Abstract
Background Microarray experiments in mice have shown that high fat diet can lead to elevated expression of genes that are disproportionately associated with immune functions. These effects of high fat (atherogenic) diet may be due to infiltration of tissues by leukocytes in coordination with inflammatory processes. Methodology/Principal Findings The Novartis strain-diet-sex microarray database (GSE10493) was used to evaluate the hepatic effects of high fat diet (4 weeks) in 12 mouse strains and both genders. We develop and apply an algorithm that identifies “signature transcripts” for many different leukocyte populations (e.g., T cells, B cells, macrophages) and uses this information to derive an in silico “inflammation profile”. Inflammation profiles highlighted monocytes, macrophages and dendritic cells as key drivers of gene expression patterns associated with high fat diet in liver. In some strains (e.g., NZB/BINJ, B6), we estimate that 50–60% of transcripts elevated by high fat diet might be due to hepatic infiltration by these cell types. Interestingly, DBA mice appeared to exhibit resistance to localized hepatic inflammation associated with atherogenic diet. A common characteristic of infiltrating cell populations was elevated expression of genes encoding components of the toll-like receptor signaling pathway (e.g., Irf5 and Myd88). Conclusions/Significance High fat diet promotes infiltration of hepatic tissue by leukocytes, leading to elevated expression of immune-associated transcripts. The intensity of this effect is genetically controlled and sensitive to both strain and gender. The algorithm developed in this paper provides a framework for computational analysis of tissue remodeling processes and can be usefully applied to any in vivo setting in which inflammatory processes play a prominent role.
Collapse
Affiliation(s)
- William R Swindell
- Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America.
| | | | | |
Collapse
|