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Ganekal P, Vastrad B, Kavatagimath S, Vastrad C, Kotrashetti S. Bioinformatics and Next-Generation Data Analysis for Identification of Genes and Molecular Pathways Involved in Subjects with Diabetes and Obesity. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59020309. [PMID: 36837510 PMCID: PMC9967176 DOI: 10.3390/medicina59020309] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/19/2023] [Accepted: 01/29/2023] [Indexed: 02/10/2023]
Abstract
Background and Objectives: A subject with diabetes and obesity is a class of the metabolic disorder. The current investigation aimed to elucidate the potential biomarker and prognostic targets in subjects with diabetes and obesity. Materials and Methods: The next-generation sequencing (NGS) data of GSE132831 was downloaded from Gene Expression Omnibus (GEO) database. Functional enrichment analysis of DEGs was conducted with ToppGene. The protein-protein interactions network, module analysis, target gene-miRNA regulatory network and target gene-TF regulatory network were constructed and analyzed. Furthermore, hub genes were validated by receiver operating characteristic (ROC) analysis. A total of 872 DEGs, including 439 up-regulated genes and 433 down-regulated genes were observed. Results: Second, functional enrichment analysis showed that these DEGs are mainly involved in the axon guidance, neutrophil degranulation, plasma membrane bounded cell projection organization and cell activation. The top ten hub genes (MYH9, FLNA, DCTN1, CLTC, ERBB2, TCF4, VIM, LRRK2, IFI16 and CAV1) could be utilized as potential diagnostic indicators for subjects with diabetes and obesity. The hub genes were validated in subjects with diabetes and obesity. Conclusion: This investigation found effective and reliable molecular biomarkers for diagnosis and prognosis by integrated bioinformatics analysis, suggesting new and key therapeutic targets for subjects with diabetes and obesity.
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Affiliation(s)
- Prashanth Ganekal
- Department of General Medicine, Basaveshwara Medical College, Chitradurga 577501, Karnataka, India
| | - Basavaraj Vastrad
- Department of Pharmaceutical Chemistry, K.L.E. College of Pharmacy, Gadag 582101, Karnataka, India
| | - Satish Kavatagimath
- Department of Pharmacognosy, K.L.E. College of Pharmacy, Belagavi 590010, Karnataka, India
| | - Chanabasayya Vastrad
- Biostatistics and Bioinformatics, Chanabasava Nilaya, Bharthinagar, Dharwad 580001, Karnataka, India
- Correspondence: ; Tel.: +91-9480073398
| | - Shivakumar Kotrashetti
- Biostatistics and Bioinformatics, Chanabasava Nilaya, Bharthinagar, Dharwad 580001, Karnataka, India
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An inquest into regulatory mechanism of caveolin by ischemic preconditioning against orchidectomy-challenged rat heart. Mol Cell Biochem 2021; 476:2587-2601. [PMID: 33646465 DOI: 10.1007/s11010-021-04109-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 02/12/2021] [Indexed: 10/22/2022]
Abstract
Lower level of testosterone in men is related to major risks of cardiovascular diseases. This risk may increase due to the opening of mitochondrial permeability transition pore (mPTP). The mPTP is also regulated by ischemic preconditioning (IPC) and a membrane protein known as caveolin. The cardioprotective effect of IPC is the most effective methodologies used in testosterone deficiency. Daidzein (DDZ) a caveolin inhibitor shows cardioprotective action. The experiment has been designed to evaluate the pretreated DDZ effect in IPC-mediated cardioprotective action in orchidectomy (OCZ)-challenged rat heart. The experiment was designed on male Wistar rats with/without OCZ. The level of testosterone is decreased by OCZ which reduces general body growth. Isolated heart from normal and OCZ rat was tied up on Langendorff's perfused apparatus and followed by ischemic reperfusion (IR) and IPC cycle. To investigate the cardioprotective effect of DDZ in heart with testosterone deficiency, a total of nine groups, each consisting of six rats (n = 6) were as follows: Sham, IR, IPC, IPC + OCZ, IPC + DDZ, IPC + OCZ + DDZ, IPC + sodium nitrite, IPC + OCZ + sodium nitrite, IPC + OCZ + DDZ + sodium nitrite. Hemodynamic parameters, cellular injury (infarct size, LDH, CKMB and cardiac troponin-T), oxidative stress, mitochondrial function, integrity and immunoblot analysis were assessed for each group. The experimental data showed that DDZ potentiated IPC-mediated increase in the heart rate, left ventricular diastolic pressure, coronary flow; + dp/dtmax, and - dp/dtmax. The pretreated DDZ decreases the action of LDH and CKMB, myocyte size, cardiac collagen content, infarct size and ventricular fibrillation and attenuation in oxidative stress and mitochondrial dysfunction in OCZ-challenged rat heart in all sets of experiments. Sodium nitrite, a producer of nitric oxide (NO), enhanced potentiating effects of DDZ on IPC-mediated cardioprotection in OCZ-challenged rats. These observations show that the downregulation of caveolin through impaired opening of mPTP during reperfusion and caveolin might be a potential adjuvant to IPC against cardiac injury in OCZ-challenged rats.
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Sudhahar V, Okur MN, O'Bryan JP, Minshall RD, Fulton D, Ushio-Fukai M, Fukai T. Caveolin-1 stabilizes ATP7A, a copper transporter for extracellular SOD, in vascular tissue to maintain endothelial function. Am J Physiol Cell Physiol 2020; 319:C933-C944. [PMID: 32936699 PMCID: PMC7789967 DOI: 10.1152/ajpcell.00151.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 12/31/2022]
Abstract
Caveolin-1 (Cav-1) is a scaffolding protein and a major component of caveolae/lipid rafts. Previous reports have shown that endothelial dysfunction in Cav-1-deficient (Cav-1-/-) mice is mediated by elevated oxidative stress through endothelial nitric oxide synthase (eNOS) uncoupling and increased NADPH oxidase. Oxidant stress is the net balance of oxidant generation and scavenging, and the role of Cav-1 as a regulator of antioxidant enzymes in vascular tissue is poorly understood. Extracellular SOD (SOD3) is a copper (Cu)-containing enzyme that is secreted from vascular smooth muscle cells/fibroblasts and subsequently binds to the endothelial cells surface, where it scavenges extracellular [Formula: see text] and preserves endothelial function. SOD3 activity is dependent on Cu, supplied by the Cu transporter ATP7A, but whether Cav-1 regulates the ATP7A-SOD3 axis and its role in oxidative stress-mediated vascular dysfunction has not been studied. Here we show that the activity of SOD3, but not SOD1, was significantly decreased in Cav-1-/- vessels, which was rescued by re-expression of Cav-1 or Cu supplementation. Loss of Cav-1 reduced ATP7A protein, but not mRNA, and this was mediated by ubiquitination of ATP7A and proteasomal degradation. ATP7A bound to Cav-1 and was colocalized with SOD3 in caveolae/lipid rafts or perinucleus in vascular tissues or cells. Impaired endothelium-dependent vasorelaxation in Cav-1-/- mice was rescued by gene transfer of SOD3 or by ATP7A-overexpressing transgenic mice. These data reveal an unexpected role of Cav-1 in stabilizing ATP7A protein expression by preventing its ubiquitination and proteasomal degradation, thereby increasing SOD3 activity, which in turn protects against vascular oxidative stress-mediated endothelial dysfunction.
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Affiliation(s)
- Varadarajan Sudhahar
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, Georgia
- Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Mustafa Nazir Okur
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - John P O'Bryan
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
| | - Richard D Minshall
- Departments of Anesthesiology and Pharmacology, University of Illinois at Chicago, Chicago, Illinois
| | - David Fulton
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Masuko Ushio-Fukai
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Medicine (Cardiology), Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Tohru Fukai
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, Georgia
- Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
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Iakovleva TV, Kostina NE, Makarova EN, Bazhan NM. Effect of gonadectomy and estradiol on the expression of insulin signaling cascade genes in female and male mice. Vavilovskii Zhurnal Genet Selektsii 2020; 24:427-434. [PMID: 33659826 PMCID: PMC7716539 DOI: 10.18699/vj20.635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- T. V. Iakovleva
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
| | - N. E. Kostina
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
| | - E. N. Makarova
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
| | - N. M. Bazhan
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
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5
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Hepatocyte caveolin-1 modulates metabolic gene profiles and functions in non-alcoholic fatty liver disease. Cell Death Dis 2020; 11:104. [PMID: 32029710 PMCID: PMC7005160 DOI: 10.1038/s41419-020-2295-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 11/08/2022]
Abstract
Caveolin-1 (CAV1) is a crucial regulator of lipid accumulation and metabolism. Previous studies have shown that global Cav1 deficiency affects lipid metabolism and hepatic steatosis. We aimed to analyze the consequences of hepatocyte-specific Cav1 knockout under healthy conditions and upon non-alcoholic fatty liver disease (NAFLD) development. Male and female hepatocyte-specific Cav1 knockout (HepCAV1ko) mice were fed a methionine/choline (MCD) deficient diet for 4 weeks. MCD feeding caused severe hepatic steatosis and slight fibrosis. In addition, liver function parameters, i.e., ALT, AST, and GLDH, were elevated, while cholesterol and glucose level were reduced upon MCD feeding. These differences were not affected by hepatocyte-specific Cav1 knockout. Microarray analysis showed strong differences in gene expression profiles of livers from HepCAV1ko mice compared those of global Cav1 knockout animals. Pathway enrichment analysis identified that metabolic alterations were sex-dimorphically regulated by hepatocyte-specific CAV1. In male HepCAV1ko mice, metabolic pathways were suppressed in NAFLD, whereas in female knockout mice induced. Moreover, gender-specific transcription profiles were modulated in healthy animals. In conclusion, our results demonstrate that hepatocyte-specific Cav1 knockout significantly altered gene profiles, did not affect liver steatosis and fibrosis in NAFLD and that gender had severe impact on gene expression patterns in healthy and diseased hepatocyte-specific Cav1 knockout mice.
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Kruglikov IL, Scherer PE. Caveolin-1 as a target in prevention and treatment of hypertrophic scarring. NPJ Regen Med 2019; 4:9. [PMID: 31044089 PMCID: PMC6486604 DOI: 10.1038/s41536-019-0071-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 04/02/2019] [Indexed: 12/11/2022] Open
Abstract
Reduced expression of caveolin-1 (Cav-1) is an important pathogenic factor in hypertrophic scarring (HTS). Such a reduction can be found in connection with the main known risk factors for HTS, including dark skin, female gender, young age, burn site and severity of the injury. The degree of overexpression of Cav-1 associated with different therapeutic options for HTS correlates with clinical improvements in HTS. This makes endo- or exogenous induction of Cav-1 not only an important therapeutic target for HTS, but also highlights its use as a preventive target to reduce or avoid HTS formation.
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Affiliation(s)
| | - Philipp E. Scherer
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, TX 75390-8549 USA
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Immuno-PET imaging based radioimmunotherapy in head and neck squamous cell carcinoma model. Oncotarget 2017; 8:92090-92105. [PMID: 29190900 PMCID: PMC5696166 DOI: 10.18632/oncotarget.20760] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/04/2017] [Indexed: 11/25/2022] Open
Abstract
The epidermal growth factor receptor (EGFR) is one of the most comprehensively studied molecular targets in head and neck squamous cell carcinoma (HNSCC). However, inherent and acquired resistance are serious problems and are responsible for limited clinical efficacy and tumor recurrence. In this study, we evaluated the feasibility of immuno-positron emission tomography (PET) imaging and radioimmunotherapy (RIT) with 64Cu-/177Lu-PCTA-cetuximab in cetuximab-resistant SNU-1066 HNSCC xenografted model. The cellular uptake of 64Cu/177Lu-3,6,9,15-tetraazabicyclo[9.3.1]-pentadeca-1(15),11,13-triene-3,6,9,-triacetic acid (PCTA)-cetuximab showed good correlation with western blot and flow cytometry analysis in EGFR expression level of various HNSCC cells. 177Lu-PCTA-cetuximab selectively killed cetuximab-resistant SNU-1066 cells in vitro. 64Cu-/177Lu-PCTA-cetuximab specifically accumulated in SNU-1066 tumor and those uptakes were peaked at 48 h and 7 day, respectively in biodistribution, PET and single-photon emission computed tomography/computed tomography (SPECT/CT) imaging. RIT with single dose of 177Lu-PCTA-cetuximab exhibited significant tumor regression and markedly reduced 2-[18F]fluoro-2-deoxy-D-glucose (18F-FDG) uptake, compared to other groups. Proliferation index were dramatically decreased and apoptotic index increased in RIT group. These results suggest that a diagnostic and therapeutic convergence radiopharmaceutical, 64Cu-/177Lu-PCTA-cetuximab has the potential of target selection using immuno-PET imaging and targeted therapy by RIT in EGFR expressing cetuximab-resistant HNSCC tumors.
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Nguyen KCT, Cho KA. Versatile Functions of Caveolin-1 in Aging-related Diseases. Chonnam Med J 2017; 53:28-36. [PMID: 28184336 PMCID: PMC5299127 DOI: 10.4068/cmj.2017.53.1.28] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/10/2016] [Accepted: 10/11/2016] [Indexed: 12/24/2022] Open
Abstract
Caveolin-1 (Cav-1) is a trans-membrane protein that is a major component of the caveolae structure on the plasma membrane. Cav-1 is involved in the regulation of various cellular processes, including cell growth, differentiation, endocytosis, and in particular it has been implied in cellular senescence. Here we review current knowledge about Cav-1 in cellular signaling and discuss the role of Cav-1 in aging-related diseases.
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Affiliation(s)
- Kim Cuc Thi Nguyen
- Deparment of Life Science, ThaiNguyen University of Science, TanThinh Ward, ThaiNguyen, VietNam
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
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9
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Song IH, Lee TS, Park YS, Lee JS, Lee BC, Moon BS, An GI, Lee HW, Kim KI, Lee YJ, Kang JH, Lim SM. Immuno-PET Imaging and Radioimmunotherapy of 64Cu-/177Lu-Labeled Anti-EGFR Antibody in Esophageal Squamous Cell Carcinoma Model. J Nucl Med 2016; 57:1105-11. [PMID: 26917708 DOI: 10.2967/jnumed.115.167155] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/10/2016] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED Immuno-PET provides valuable information about tumor location, phenotype, susceptibility to therapy, and treatment response, especially to targeted radioimmunotherapy. In this study, we prepared antiepidermal growth factor receptor (EGFR) antibody via identical chelator, 3,6,9,15-tetraazabicyclo[9.3.1]-pentadeca-1(15),11,13-trience-3,6,9,-triacetic acid (PCTA), labeled with (64)Cu or (177)Lu to evaluate the EGFR expression levels using immuno-PET and the feasibility of radioimmunotherapy in an esophageal squamous cell carcinoma (ESCC) model. METHODS Cetuximab was conjugated with p-SCN-Bn-PCTA and radiolabeled with (64)Cu or (177)Lu. In vitro EGFR expression levels were determined and compared using flow cytometry and cell binding assay. In vivo EGFR expression levels were evaluated via immuno-PET imaging of (64)Cu-cetuximab and biodistribution analysis. Micro-SPECT/CT imaging, biodistribution, and radioimmunotherapy studies of (177)Lu-cetuximab were performed in the ESCC model. Therapeutic responses were monitored using (18)F-FDG PET and immunohistochemical staining. RESULTS (64)Cu- or (177)Lu-labeled antibodies showed high radiolabeling yield (>98%), stability (>90%), and favorable immunoreactivity. In vitro EGFR status measured by cell binding assay was correlated with the flow cytometry data. Immuno-PET, micro-SPECT/CT, and biodistribution demonstrated specific uptake in ESCC tumors depending on the EGFR expression levels. Tumor accumulation of (64)Cu- and (177)Lu-cetuximab was peaked at 48 and 120 h, respectively. Radioimmunotherapy with (177)Lu-cetuximab showed significant inhibition of tumor growth (P < 0.01) and marked reduction of (18)F-FDG SUV compared with that of control (P < 0.05). Terminal deoxynucleotidyl transferase dUTP nick-end labeling positivity and Ki-67 staining indices increased and decreased, respectively, in the radioimmunotherapy group compared with other groups (P < 0.01). CONCLUSION (64)Cu-cetuximab immuno-PET represented EGFR expression levels in ESCC tumors, and (177)Lu-cetuximab radioimmunotherapy effectively inhibited the tumor growth. The diagnostic and therapeutic convergence radiopharmaceutical (64)Cu-/(177)Lu-PCTA-cetuximab may be useful as a diagnostic tool in patient selection and a potent radioimmunotherapy agent in EGFR-positive ESCC tumors.
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Affiliation(s)
- In Ho Song
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea Department of Biomedical Laboratory Science, Yonsei University, Wonju, South Korea
| | - Tae Sup Lee
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea
| | - Yong Serk Park
- Department of Biomedical Laboratory Science, Yonsei University, Wonju, South Korea
| | - Jin Sook Lee
- Department of Anatomy, Yonsei University Wonju Collage of Medicine, Wonju, South Korea
| | - Byung Chul Lee
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Byung Seok Moon
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Gwang Il An
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea
| | - Hae Won Lee
- Department of Thoracic Surgery, KIRAMS, Seoul, South Korea; and
| | - Kwang Il Kim
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea
| | - Yong Jin Lee
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea
| | - Joo Hyun Kang
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea
| | - Sang Moo Lim
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, South Korea Department of Nuclear Medicine, KIRAMS, Seoul, South Korea
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A Chromosome 13 locus is associated with male-specific mortality in mice. Aging Clin Exp Res 2016; 28:59-67. [PMID: 25995165 DOI: 10.1007/s40520-015-0370-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND AND AIM Mortality is a highly complex trait influenced by a wide array of genetic factors. METHODS We examined a population of 1200 mice that were F2 generation offspring of a 4-way reciprocal cross between C57BL6/J and DBA2/J strains. Animals were sacrificed at age 200, 500, or 800 days and genotyped at 96 markers. The 800 days old cohort, which were the survivors of a much larger breeding group, were examined for enriched frequency of alleles that benefit survival and depletion of alleles that reduce survival. RESULTS Loci on Chr 13 in males and on Chr X in females were significantly distorted from Mendelian expectations, even after conservative correction for multiple testing. DBA2/J alleles between 35 and 80 Mb on Chr 13 were underrepresented in the age 800 male animals. D2 genotypes in this region were also associated with premature death during behavioral testing. Furthermore, confirmatory analysis showed BXD recombinant inbred strains carrying the D2 alleles in this region had shorter median survival. Exploration of available pathology data indicated that a syndrome involving dental malocclusions, pancreatic islet hypertrophy, and kidney lipidosis may have mediated the effects of DBA alleles on mortality specifically in male mice. The heterozygote advantage locus on the X Chr was not found to be associated with any pathology. CONCLUSIONS These results suggest a novel locus influencing survival in the B6/D2 genetic background, perhaps via a metabolic disorder that emerges by 200 days of age in male animals.
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Aoki A, Fujitani K, Takagi K, Kimura T, Nagase H, Nakanishi T. Male Hypogonadism Causes Obesity Associated with Impairment of Hepatic Gluconeogenesis in Mice. Biol Pharm Bull 2016; 39:587-92. [DOI: 10.1248/bpb.b15-00942] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Akira Aoki
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University
| | - Kohei Fujitani
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University
| | - Kohei Takagi
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University
| | - Tomoki Kimura
- Laboratory of Toxicology, Faculty of Pharmaceutical Sciences, Setsunan University
| | - Hisamitsu Nagase
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University
| | - Tsuyoshi Nakanishi
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University
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12
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Baudrand R, Goodarzi MO, Vaidya A, Underwood PC, Williams JS, Jeunemaitre X, Hopkins PN, Brown N, Raby BA, Lasky-Su J, Adler GK, Cui J, Guo X, Taylor KD, Chen YDI, Xiang A, Raffel LJ, Buchanan TA, Rotter JI, Williams GH, Pojoga LH. A prevalent caveolin-1 gene variant is associated with the metabolic syndrome in Caucasians and Hispanics. Metabolism 2015; 64:1674-81. [PMID: 26475177 PMCID: PMC4641791 DOI: 10.1016/j.metabol.2015.09.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 08/13/2015] [Accepted: 09/08/2015] [Indexed: 12/18/2022]
Abstract
CONTEXT AND OBJECTIVE We examined whether a prevalent caveolin-1 gene (CAV1) variant, previously related to insulin resistance, is associated with metabolic syndrome (MetS). PATIENTS AND METHODS We included subjects genotyped for the CAV1 variant rs926198 from two cohorts: 735 Caucasians from the HyperPATH multicenter study, and 810 Hispanic participants from the HTN-IR cohort. RESULTS Minor allele carriers from HyperPATH cohort (57% of subjects) had higher Framingham risk scores, higher odds of diabetes (10.7% vs 5.7%, p=0.016), insulin resistance (44.3% vs 35.1%, p=0.022), low HDL (49.3% vs 39.6%, p=0.018) and MetS (33% vs 20.5%, p<0.001) but similar BMI. Consistently, minor allele carriers exhibited higher odds of MetS, even when adjusted for confounders and relatedness (OR 2.83 (1.73-4.63), p<0.001). The association with MetS was replicated in the Hispanic cohort HTN-IR (OR 1.61, [1.06-2.44], p=0.025). Exploratory analyses suggest that MetS risk is modified by a CAV1 variant-BMI status interaction, whereby the minor allele carrier status strongly predicted MetS (OR 3.86 [2.05-7.27], p<0.001) and diabetes (OR 2.27 [1.07-4.78], p=0.03) in non-obese, but not in obese subjects. In addition, we observed a familial aggregation for MetS diagnosis in minor allele carriers. CONCLUSION The prevalent CAV1 gene variant rs926198 is associated with MetS in separate Caucasian and Hispanic cohorts. These findings appear to be driven by an interaction between the genetic marker and obesity status, suggesting that the CAV1 variant may improve risk profiling in non-obese subjects. Additional studies are needed to confirm the clinical implications of our results.
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Affiliation(s)
- Rene Baudrand
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Endocrinology, School Of Medicine, Pontificia Universidad Catolica De Chile, Santiago 8330074, Chile
| | - Mark O Goodarzi
- Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Anand Vaidya
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Patricia C Underwood
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jonathan S Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Xavier Jeunemaitre
- Centre Investigation Clinique, Assistance Publique- Georges Pompidou; Institut National de la Sante et de la Recherche Medicale, Unite Mixte de Recherche en Sante 970, Universite Paris Descartes, Paris 75014, France
| | - Paul N Hopkins
- Cardiovascular Genetics Research Unit, University of Utah School of Medicine Salt Lake City, Utah 84112
| | - Nancy Brown
- Vanderbilt University Medical Center, Nashville, TN 37232
| | - Benjamin A Raby
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Jessica Lasky-Su
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Gail K Adler
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jinrui Cui
- Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Xiuqing Guo
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 90502
| | - Kent D Taylor
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 90502
| | - Yii-Der I Chen
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 90502
| | - Anny Xiang
- Research and Evaluation Branch, Kaiser Permanente of Southern California, Pasadena, CA 91188
| | - Leslie J Raffel
- Medical Genetics Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048
| | - Thomas A Buchanan
- Departments of Medicine and Physiology and Biophysics, University of Southern California Keck School of Medicine, CA 90033
| | - Jerome I Rotter
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 90502
| | - Gordon H Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Luminita H Pojoga
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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13
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Son YH, Lee SJ, Lee KB, Lee JH, Jeong EM, Chung SG, Park SC, Kim IG. Dexamethasone downregulates caveolin-1 causing muscle atrophy via inhibited insulin signaling. J Endocrinol 2015; 225:27-37. [PMID: 25688118 DOI: 10.1530/joe-14-0490] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Glucocorticoids play a major role in the development of muscle atrophy in various medical conditions, such as cancer, burn injury, and sepsis, by inhibiting insulin signaling. In this study, we report a new pathway in which glucocorticoids reduce the levels of upstream insulin signaling components by downregulating the transcription of the gene encoding caveolin-1 (CAV1), a scaffolding protein present in the caveolar membrane. Treatment with the glucocorticoid dexamethasone (DEX) decreased CAV1 protein and Cav1 mRNA expression, with a concomitant reduction in insulin receptor alpha (IRα) and IR substrate 1 (IRS1) levels in C2C12 myotubes. On the basis of the results of promoter analysis using deletion mutants and site-directed mutagenesis a negative glucocorticoid-response element in the regulatory region of the Cav1 gene was identified, confirming that Cav1 is a glucocorticoid-target gene. Cav1 knockdown using siRNA decreased the protein levels of IRα and IRS1, and overexpression of Cav1 prevented the DEX-induced decrease in IRα and IRS1 proteins, demonstrating a causal role of Cav1 in the inhibition of insulin signaling. Moreover, injection of adenovirus expressing Cav1 into the gastrocnemius muscle of mice prevented DEX-induced atrophy. These results indicate that CAV1 is a critical regulator of muscle homeostasis, linking glucocorticoid signaling to the insulin signaling pathway, thereby providing a novel target for the prevention of glucocorticoid-induced muscle atrophy.
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Affiliation(s)
- Young Hoon Son
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - Seok-Jin Lee
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - Ki-Baek Lee
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - Jin-Haeng Lee
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - Eui Man Jeong
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - Sun Gun Chung
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - Sang-Chul Park
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
| | - In-Gyu Kim
- Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea Department of Biochemistry and Molecular BiologyInstitute of Human-Environment Interface BiologyDepartment of Rehabilitation MedicineSeoul National University College of Medicine, 103 Daehak-ro, Jongno-Gu, Seoul 110-799, Korea
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14
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Mukherjee R, Kim SW, Choi MS, Yun JW. Sex-dependent expression of caveolin 1 in response to sex steroid hormones is closely associated with development of obesity in rats. PLoS One 2014; 9:e90918. [PMID: 24608114 PMCID: PMC3948350 DOI: 10.1371/journal.pone.0090918] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 02/06/2014] [Indexed: 11/18/2022] Open
Abstract
Caveolin-1 (CAV1) is a conserved group of structural membrane proteins that form special cholesterol and sphingolipid-rich compartments, especially in adipocytes. Recently, it has been reported that CAV1 is an important target protein in sex hormone-dependent regulation of various metabolic pathways, particularly in cancer and diabetes. To clarify distinct roles of CAV1 in sex-dependent obesity development, we investigated the effects of high fat diet (HFD) and sex steroid hormones on CAV1 expression in adipose tissues of male and female rats. Results of animal experiments revealed that estrogen (17-β-estradiol, E2) and androgen (dihydrotestosterone, DHT) had opposite effects on body weight gain as well as on the regulation of CAV1, hormone sensitive lipase (HSL) and uncoupling protein 1 (UCP1) in adipose tissues. Furthermore, sex hormone receptors and aromatase were differentially expressed in a sex-dependent manner in response to E2 and DHT treatments. In vivo data were confirmed using 3T3-L1 and HIB1B cell lines, where Cav1 knock down stimulated lipogenesis but suppressed sex hormone receptor signaling proteins. Most importantly, co-immunoprecipitation enabled the identification of previously unrecognized CAV1-interacting mitochondrial or lipid oxidative pathway proteins in adipose tissues. Taken together, current data showed that CAV1 may play important preventive role in the development of obesity, with more prominent effects in females, and proved to be an important target protein for the hormonal regulation of adipose tissue metabolism by manipulating sex hormone receptors and mitochondrial oxidative pathways. Therefore, we can report, for the first time, the molecular mechanism underlying the effects of sex steroid hormones in the sex-dimorphic regulation of CAV1.
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Affiliation(s)
- Rajib Mukherjee
- Department of Biotechnology, Daegu University, Kyungsan, Republic of Korea
| | - Sang Woo Kim
- Department of Biotechnology, Daegu University, Kyungsan, Republic of Korea
| | - Myung Sook Choi
- Center for Food and Nutritional Genomics Research & Department of Food Science and Nutrition, Kyungpook National University, Daegu, Republic of Korea
| | - Jong Won Yun
- Department of Biotechnology, Daegu University, Kyungsan, Republic of Korea
- * E-mail:
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15
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Root-Bernstein R, Podufaly A, Dillon PF. Estradiol Binds to Insulin and Insulin Receptor Decreasing Insulin Binding in vitro. Front Endocrinol (Lausanne) 2014; 5:118. [PMID: 25101056 PMCID: PMC4104309 DOI: 10.3389/fendo.2014.00118] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 07/04/2014] [Indexed: 11/13/2022] Open
Abstract
RATIONALE Insulin (INS) resistance associated with hyperestrogenemias occurs in gestational diabetes mellitus, polycystic ovary syndrome, ovarian hyperstimulation syndrome, estrogen therapies, metabolic syndrome, and obesity. The mechanism by which INS and estrogen interact is unknown. We hypothesize that estrogen binds directly to INS and the insulin receptor (IR) producing INS resistance. OBJECTIVES To determine the binding constants of steroid hormones to INS, the IR, and INS-like peptides derived from the IR; and to investigate the effect of estrogens on the binding of INS to its receptor. METHODS Ultraviolet spectroscopy, capillary electrophoresis, and NMR demonstrated estrogen binding to INS and its receptor. Horse-radish peroxidase-linked INS was used in an ELISA-like procedure to measure the effect of estradiol on binding of INS to its receptor. MEASUREMENTS Binding constants for estrogens to INS and the IR were determined by concentration-dependent spectral shifts. The effect of estradiol on INS binding to its receptor was determined by shifts in the INS binding curve. MAIN RESULTS Estradiol bound to INS with a K d of 12 × 10(-9) M and to the IR with a K d of 24 × 10(-9) M, while other hormones had significantly less affinity. Twenty-two nanomolars of estradiol shifted the binding curve of INS to its receptor 0.8 log units to the right. CONCLUSION Estradiol concentrations in hyperestrogenemic syndromes may interfere with INS binding to its receptor producing significant INS resistance.
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Affiliation(s)
- Robert Root-Bernstein
- Department of Physiology, Michigan State University, East Lansing, MI, USA
- *Correspondence: Robert Root-Bernstein, Department of Physiology, Michigan State University, 2174 Biomedical and Physical Science Building, East Lansing, MI 48824, USA e-mail:
| | - Abigail Podufaly
- College of Osteopathic Medicine, Michigan State University, East Lansing, MI, USA
| | - Patrick F. Dillon
- Department of Physiology, Michigan State University, East Lansing, MI, USA
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Effects of estradiol on the endocytic transport of vitamin D carrier protein in hepatocytes. Biochim Biophys Acta Gen Subj 2013; 1830:3421-6. [PMID: 23416408 DOI: 10.1016/j.bbagen.2013.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 01/16/2013] [Accepted: 01/21/2013] [Indexed: 01/24/2023]
Abstract
BACKGROUND The possible modulation of receptor-mediated endocytosis (RME) by sex steroids is not well understood, especially in terms of the different receptor-ligand systems and cell types that may exhibit such regulation. The main objective of the current study was to examine the short-term effects of 17β-estradiol (E2) on RME of an extracellular carrier protein for calciferols, vitamin D-binding protein (DBP). METHODS Murine male and female primary hepatocytes were treated for 30min in the absence (controls) or presence of Ε2 (1μM). Labeled DBP was then added, and its endocytosis was measured after an incubation of 10min at 37°C using standard ELISA techniques. To obtain further insight into potential molecular mechanisms, fulvestrant and 17α-ethinyl estradiol (EE) were also analyzed. And as part of comparative analyses, a second nutrient carrier protein, vitamin A-binding protein (RBP), was also analyzed. RESULTS The results provide the first evidence for an estradiol-dependent stimulation of DBP endocytosis (p<0.05 relative to controls without Ε2). This stimulation, however, was only observed in female hepatocytes. Uptake of RBP was enhanced to a similar extent as DBP by estradiol. In normal (non-estradiol treated) male and female hepatocytes such changes in DBP or RBP endocytosis were not observed. Both fulvestrant and EE exhibited a significant (p<0.05), but incomplete, inhibition of Ε2-dependent stimulation of endocytosis. CONCLUSIONS The results provide novel evidence for Ε2 effects on endocytic transport; and for gender-related differences in E2-enhanced transport. These Ε2 effects may be partly dependent on estrogen receptors; but possible, additional or alternative mechanisms are also proposed. GENERAL SIGNIFICANCE Endocytic transport is a fundamental function whose regulation has implications for cell signaling, growth, survival, differentiation, and death. This study helps delineate a possible endocrine regulatory pathway involving modulation of endocytosis by a steroid hormone. It also provides a potential, new relation between different hormonal regulators, e.g., estradiol effects on cellular assimilation of calciferols.
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17
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Strålfors P. Caveolins and Caveolae, Roles in Insulin Signalling and Diabetes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 729:111-26. [DOI: 10.1007/978-1-4614-1222-9_8] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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