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Ribeiro KS, Karmakar E, Park C, Garg R, Kung GP, Kadakia I, Gopianand JS, Arun T, Kisselev O, Gnana-Prakasam JP. Iron Regulates Cellular Proliferation by Enhancing the Expression of Glucose Transporter GLUT3 in the Liver. Cells 2024; 13:1147. [PMID: 38994998 PMCID: PMC11240476 DOI: 10.3390/cells13131147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 07/01/2024] [Accepted: 07/02/2024] [Indexed: 07/13/2024] Open
Abstract
Iron is often accumulated in the liver during pathological conditions such as cirrhosis and cancer. Elevated expression of glucose transporters GLUT1 and GLUT3 is associated with reduced overall survival in patients with hepatocellular carcinoma. However, it is not known whether iron can regulate glucose transporters and contribute to tumor proliferation. In the present study, we found that treatment of human liver cell line HepG2 with ferric ammonium citrate (FAC) resulted in a significant upregulation of GLUT3 mRNA and protein in a dose-dependent manner. Similarly, iron accumulation in mice fed with high dietary iron as well as in mice injected intraperitoneally with iron dextran enhanced the GLUT3 expression drastically in the liver. We demonstrated that iron-induced hepatic GLUT3 upregulation is mediated by the LKB1/AMPK/CREB1 pathway, and this activation was reversed when treated with iron chelator deferiprone. In addition, inhibition of GLUT3 using siRNA prevented iron-mediated increase in the expression of cell cycle markers and cellular hyperproliferation. Furthermore, exogenous sodium beta-hydroxybutyrate treatment prevented iron-mediated hepatic GLUT3 activation both in vitro and in vivo. Together, these results underscore the importance of iron, AMPK, CREB1 and GLUT3 pathways in cell proliferation and highlight the therapeutic potential of sodium beta-hydroxybutyrate in hepatocellular carcinoma with high GLUT3 expression.
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Affiliation(s)
- Kleber S Ribeiro
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | - Eshani Karmakar
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | - Christine Park
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | - Richa Garg
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | - George P Kung
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | - Isha Kadakia
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | | | - Tejas Arun
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
| | - Oleg Kisselev
- School of Medicine, Saint Louis University, St. Louis, MO 63104, USA
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2
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Abruscato G, Tarantino R, Mauro M, Chiarelli R, Vizzini A, Arizza V, Vazzana M, Luparello C. Modulation of Glucose Consumption and Uptake in HepG2 Cells by Aqueous Extracts from the Coelomic Fluid of the Edible Holothuria tubulosa Sea Cucumber. BIOLOGY 2024; 13:378. [PMID: 38927258 PMCID: PMC11201224 DOI: 10.3390/biology13060378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/20/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024]
Abstract
The cell-free aqueous extract from the coelomic fluid of Holothuria tubulosa was prepared and examined for its glucose-lowering effect on HepG2 cells in vitro. In particular, employing a combination of cytochemical, flow cytometric, PCR, and protein blot techniques, we evaluated its role on glucose internalization and storage and on the upregulation and surface translocation of the two glucose transporters GLUT-2 and -4. The changes in expression, synthesis, and/or activation of the GLUT2-related transcription factor hepatocyte nuclear factor-1 alpha (HNF1α) and the GLUT-4-translocation regulatory factors insulin receptor substrate-1 (IRS-1) and AKT were also studied. Our results showed the improved glucose response by HepG2 cells, leading to an evident increase in glucose consumption/uptake and glycogen storage upon exposure. Moreover, the extract induced molecular reprogramming involving the upregulation of (i) IRS1 gene expression, (ii) the transcription and translation levels of HNF1α, AKT, and GLUT-4, (iii) the phosphorylation level of AKT, (iv) the synthesis of GLUT-2 protein, and (v) the translocation of GLUT-2 and -4 transporters onto the plasma membrane. Cumulatively, our results suggest that the coelomic fluid extract from H. tubulosa can be taken into consideration for the development of novel treatment agents against diabetes mellitus.
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Affiliation(s)
- Giulia Abruscato
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
| | - Roberta Tarantino
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
| | - Manuela Mauro
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
| | - Roberto Chiarelli
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
| | - Aiti Vizzini
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Vincenzo Arizza
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Mirella Vazzana
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Claudio Luparello
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, 90128 Palermo, Italy; (G.A.); (R.T.); (M.M.); (R.C.); (A.V.); (V.A.); (M.V.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
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3
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Duangjan C, Arpawong TE, Spatola BN, Curran SP. Hepatic WDR23 proteostasis mediates insulin homeostasis by regulating insulin-degrading enzyme capacity. GeroScience 2024:10.1007/s11357-024-01196-y. [PMID: 38767782 DOI: 10.1007/s11357-024-01196-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 05/08/2024] [Indexed: 05/22/2024] Open
Abstract
Maintaining insulin homeostasis is critical for cellular and organismal metabolism. In the liver, insulin is degraded by the activity of the insulin-degrading enzyme (IDE). Here, we establish a hepatic regulatory axis for IDE through WDR23-proteostasis. Wdr23KO mice have increased IDE expression, reduced circulating insulin, and defective insulin responses. Genetically engineered human cell models lacking WDR23 also increase IDE expression and display dysregulated phosphorylation of insulin signaling cascade proteins, IRS-1, AKT2, MAPK, FoxO, and mTOR, similar to cells treated with insulin, which can be mitigated by chemical inhibition of IDE. Mechanistically, the cytoprotective transcription factor NRF2, a direct target of WDR23-Cul4 proteostasis, mediates the enhanced transcriptional expression of IDE when WDR23 is ablated. Moreover, an analysis of human genetic variation in WDR23 across a large naturally aging human cohort in the US Health and Retirement Study reveals a significant association of WDR23 with altered hemoglobin A1C (HbA1c) levels in older adults, supporting the use of WDR23 as a new molecular determinant of metabolic health in humans.
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Affiliation(s)
- Chatrawee Duangjan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Thalida Em Arpawong
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Brett N Spatola
- Dornsife College of Letters, Arts, and Science, University of Southern California, Los Angeles, CA, 90089, USA
| | - Sean P Curran
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA.
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4
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Ting KKY. Fructose-induced metabolic reprogramming of cancer cells. Front Immunol 2024; 15:1375461. [PMID: 38711514 PMCID: PMC11070519 DOI: 10.3389/fimmu.2024.1375461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/10/2024] [Indexed: 05/08/2024] Open
Abstract
Excess dietary fructose consumption has been long proposed as a culprit for the world-wide increase of incidence in metabolic disorders and cancer within the past decades. Understanding that cancer cells can gradually accumulate metabolic mutations in the tumor microenvironment, where glucose is often depleted, this raises the possibility that fructose can be utilized by cancer cells as an alternative source of carbon. Indeed, recent research has increasingly identified various mechanisms that show how cancer cells can metabolize fructose to support their proliferating and migrating needs. In light of this growing interest, this review will summarize the recent advances in understanding how fructose can metabolically reprogram different types of cancer cells, as well as how these metabolic adaptations can positively support cancer cells development and malignancy.
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Affiliation(s)
- Kenneth K. Y. Ting
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
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5
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Muehlberg F, Mohnike K, Grosser OS, Pech M, Goldschmidt J, Smalla KH, Seidensticker R, Ümütlü MR, Deniz S, Ricke J, Steffen IG, Öcal O, Seidensticker M. In vivo evaluation of tumor uptake and bio-distribution of 99mTc-labeled 1-thio-β-D-glucose and 5-thio-D-glucose in mice model. EJNMMI Radiopharm Chem 2024; 9:26. [PMID: 38551764 PMCID: PMC10980667 DOI: 10.1186/s41181-024-00253-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 03/15/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND To investigate the capacity of 99mTc-labeled 1-thio-β-D-glucose (1-TG) and 5-thio-D-glucose (5-TG) to act as a marker for glucose consumption in tumor cells in vivo as well as to evaluate the biodistribution of 1-TG and 5-TG. We investigated the biodistribution, including tumor uptake, of 1-TG and 5-TG at various time points after injection (0.5, 2 and 4 h) in human colorectal carcinoma (HCT-116) and human lung adenocarcinoma (A549) xenograft bearing nude mice (N = 4 per tracer and time point). RESULTS Ex vivo biodistribution studies revealed a moderate uptake with a maximum tumor-to-muscle ratio of 4.22 ± 2.7 and 2.2 ± 1.3 (HCT-116) and of 3.2 ± 1.1 and 4.1 ± 1.3 (A549) for 1-TG and 5-TG, respectively, with a peak at 4 h for 1-TG and 5-TG. Biodistribution revealed a significantly higher uptake compared to blood in kidneys (12.18 ± 8.77 and 12.69 ± 8.93%ID/g at 30 min) and liver (2.6 ± 2.8%ID/g) for 1-TG and in the lung (7.24 ± 4.1%ID/g), liver (6.38 ± 2.94%ID/g), and kidneys (4.71 ± 1.97 and 4.81 ± 1.91%ID/g) for 5-TG. CONCLUSIONS 1-TG and 5-TG showed an insufficient tumor uptake with a moderate tumor-to-muscle ratio, not reaching the levels of commonly used tracer, for diagnostic use in human colorectal carcinoma and human lung adenocarcinoma xenograft model.
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Affiliation(s)
- Fabian Muehlberg
- Department of Cardiology, MSB Medical School Berlin, Hochschule für Gesundheit und Medizin & HELIOS Hospital Berlin-Buch, Berlin, Germany
| | - Konrad Mohnike
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany
- MVZ DTZ Diagnostisch Therapeutisches Zentrum Am Frankfurter Tor Und MVZ DTZ Diagnostisch Therapeutisches Zentrum Am Onkozentrum Berlin OZB, Berlin, Germany
| | - Oliver S Grosser
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany
- Research Campus STIMULATE, Otto-Von-Guericke University, Magdeburg, Germany
| | - Maciej Pech
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany
| | - Juergen Goldschmidt
- Leibniz Institute for Neurobiology, Department of Neurochemistry and Molecular Biology, Magdeburg, Germany
| | - Karl-Heinz Smalla
- Leibniz Institute for Neurobiology, Research Group Neuroplasticity, Magdeburg, Germany
- Institute for Pharmacology and Toxicology, Medical Faculty, Otto-Von-Guericke University, Magdeburg, Germany
- Center for Behavioral Brain Sciences - CBBS, Otto-Von-Guericke-Universität Magdeburg, Magdeburg, Germany
| | | | | | - Sinan Deniz
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Ingo G Steffen
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
- Department of Nuclear Medicine, Charite Universitätsmedizin Berlin, Berlin, Germany
| | - Osman Öcal
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany.
- LMU Klinikum München, Klinik Und Poliklinik Für Radiologie, Marchioninistr 15, 81377, Munich, Germany.
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6
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Lodge M, Scheidemantle G, Adams VR, Cottam MA, Richard D, Breuer D, Thompson P, Shrestha K, Liu X, Kennedy A. Fructose regulates the pentose phosphate pathway and induces an inflammatory and resolution phenotype in Kupffer cells. Sci Rep 2024; 14:4020. [PMID: 38369593 PMCID: PMC10874942 DOI: 10.1038/s41598-024-54272-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 02/10/2024] [Indexed: 02/20/2024] Open
Abstract
Over-consumption of fructose in adults and children has been linked to increased risk of non-alcoholic fatty liver disease (NAFLD). Recent studies have highlighted the effect of fructose on liver inflammation, fibrosis, and immune cell activation. However, little work summarizes the direct impact of fructose on macrophage infiltration, phenotype, and function within the liver. We demonstrate that chronic fructose diet decreased Kupffer cell populations while increasing transitioning monocytes. In addition, fructose increased fibrotic gene expression of collagen 1 alpha 1 (Col1a1) and tissue metallopeptidase inhibitor 1 (Timp1) as well as inflammatory gene expression of tumor necrosis factor alpha (Tnfa) and expression of transmembrane glycoprotein NMB (Gpnmb) in liver tissue compared to glucose and control diets. Single cell RNA sequencing (scRNAseq) revealed fructose elevated expression of matrix metallopeptidase 12 (Mmp12), interleukin 1 receptor antagonist (Il1rn), and radical S-adenosyl methionine domain (Rsad2) in liver and hepatic macrophages. In vitro studies using IMKC and J774.1 cells demonstrated decreased viability when exposed to fructose. Additionally, fructose increased Gpnmb, Tnfa, Mmp12, Il1rn, and Rsad2 in unpolarized IMKC. By mass spectrometry, C13 fructose tracing detected fructose metabolites in glycolysis and the pentose phosphate pathway (PPP). Inhibition of the PPP further increased fructose induced Il6, Gpnmb, Mmp12, Il1rn, and Rsad2 in nonpolarized IMKC. Taken together, fructose decreases cell viability while upregulating resolution and anti-inflammatory associated genes in Kupffer cells.
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Affiliation(s)
- Mareca Lodge
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Grace Scheidemantle
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Victoria R Adams
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Matthew A Cottam
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Daniel Richard
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Denitra Breuer
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Peter Thompson
- Molecular Education, Technology and Research Innovation Center (METRIC), NC State University, Raleigh, NC, USA
| | - Kritika Shrestha
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Xiaojing Liu
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA
| | - Arion Kennedy
- Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC, USA.
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Klip A, De Bock K, Bilan PJ, Richter EA. Transcellular Barriers to Glucose Delivery in the Body. Annu Rev Physiol 2024; 86:149-173. [PMID: 38345907 DOI: 10.1146/annurev-physiol-042022-031657] [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] [Indexed: 02/15/2024]
Abstract
Glucose is the universal fuel of most mammalian cells, and it is largely replenished through dietary intake. Glucose availability to tissues is paramount for the maintenance of homeostatic energetics and, hence, supply should match demand by the consuming organs. In its journey through the body, glucose encounters cellular barriers for transit at the levels of the absorbing intestinal epithelial wall, the renal epithelium mediating glucose reabsorption, and the tight capillary endothelia (especially in the brain). Glucose transiting through these cellular barriers must escape degradation to ensure optimal glucose delivery to the bloodstream or tissues. The liver, which stores glycogen and generates glucose de novo, must similarly be able to release it intact to the circulation. We present the most up-to-date knowledge on glucose handling by the gut, liver, brain endothelium, and kidney, and discuss underlying molecular mechanisms and open questions. Diseases associated with defects in glucose delivery and homeostasis are also briefly addressed. We propose that the universal problem of sparing glucose from catabolism in favor of translocation across the barriers posed by epithelia and endothelia is resolved through common mechanisms involving glucose transfer to the endoplasmic reticulum, from where glucose exits the cells via unconventional cellular mechanisms.
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Affiliation(s)
- Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Katrien De Bock
- Laboratory of Exercise and Health, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Erik A Richter
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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Lee J, Hong SW, Kim MJ, Lim YM, Moon SJ, Kwon H, Park SE, Rhee EJ, Lee WY. Inhibition of Sodium-Glucose Cotransporter-2 during Serum Deprivation Increases Hepatic Gluconeogenesis via the AMPK/AKT/FOXO Signaling Pathway. Endocrinol Metab (Seoul) 2024; 39:98-108. [PMID: 38171209 PMCID: PMC10901661 DOI: 10.3803/enm.2023.1786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/25/2023] [Accepted: 10/17/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGRUOUND Sodium-dependent glucose cotransporter 2 (SGLT2) mediates glucose reabsorption in the renal proximal tubules, and SGLT2 inhibitors are used as therapeutic agents for treating type 2 diabetes mellitus. This study aimed to elucidate the effects and mechanisms of SGLT2 inhibition on hepatic glucose metabolism in both serum deprivation and serum supplementation states. METHODS Huh7 cells were treated with the SGLT2 inhibitors empagliflozin and dapagliflozin to examine the effect of SGLT2 on hepatic glucose uptake. To examine the modulation of glucose metabolism by SGLT2 inhibition under serum deprivation and serum supplementation conditions, HepG2 cells were transfected with SGLT2 small interfering RNA (siRNA), cultured in serum-free Dulbecco's modified Eagle's medium for 16 hours, and then cultured in media supplemented with or without 10% fetal bovine serum for 8 hours. RESULTS SGLT2 inhibitors dose-dependently decreased hepatic glucose uptake. Serum deprivation increased the expression levels of the gluconeogenesis genes peroxisome proliferator-activated receptor gamma co-activator 1 alpha (PGC-1α), glucose 6-phosphatase (G6pase), and phosphoenolpyruvate carboxykinase (PEPCK), and their expression levels during serum deprivation were further increased in cells transfected with SGLT2 siRNA. SGLT2 inhibition by siRNA during serum deprivation induces nuclear localization of the transcription factor forkhead box class O 1 (FOXO1), decreases nuclear phosphorylated-AKT (p-AKT), and p-FOXO1 protein expression, and increases phosphorylated-adenosine monophosphate-activated protein kinase (p-AMPK) protein expression. However, treatment with the AMPK inhibitor, compound C, reversed the reduction in the protein expression levels of nuclear p- AKT and p-FOXO1 and decreased the protein expression levels of p-AMPK and PEPCK in cells transfected with SGLT2 siRNA during serum deprivation. CONCLUSION These data show that SGLT2 mediates glucose uptake in hepatocytes and that SGLT2 inhibition during serum deprivation increases gluconeogenesis via the AMPK/AKT/FOXO1 signaling pathway.
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Affiliation(s)
- Jinmi Lee
- Institute of Medical Research, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok-Woo Hong
- Institute of Medical Research, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Min-Jeong Kim
- Institute of Medical Research, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yu-Mi Lim
- Institute of Medical Research, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sun Joon Moon
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyemi Kwon
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Se Eun Park
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun-Jung Rhee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Won-Young Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
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9
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Copur S, Yildiz AB, Covic A, Kanbay M. Is there any robust evidence showing that SGLT2 inhibitor predisposes to cancer? Eur J Clin Invest 2024; 54:e14131. [PMID: 38010034 DOI: 10.1111/eci.14131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/07/2023] [Accepted: 06/08/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND The exact pathophysiological mechanisms of SGLT-2 inhibitors in the development, progression or treatment of malignancies are not fully understood, but multiple hypotheses have been proposed. SGLT-2 inhibitors have potential anti-proliferative roles due to several underlying pathophysiological mechanisms, such as inhibition of ATP production, activation of AMPK signalling, induction of apoptosis and ferroptosis, inhibition of glutamate dehydrogenase activity and inhibition of DNA and RNA synthesis. However, heterogeneity among tumour cells and SGLT-2 inhibitor drugs limit the generalizability of pre-clinical studies. METHODS This is a narrative review discussing the potential anti-cancer effects of SGLT-2 inhibitors, an oral glucose-lowering medication used in patients with type II diabetes mellitus. This review discusses underlying mechanisms, pre-clinical and clinical trial data, epidemiological data and future perspectives on the use of SGLT-2 inhibitors in cancer treatment. RESULTS Type II diabetes is linked to various comorbidities and malignancies, but some glucose-slowering medications may have a preventive role in cancer. The use of SGLT-2 inhibitors was associated with bladder cancer based on mice studies. However, meta-analyses showed no significant increase in overall malignancy incidence of any specific type, except for empagliflozin and bladder cancer association. SGLT-2 inhibitors can potentially reduce the heart damage caused by doxorubicin and sunitinib, while enhancing the anti-cancer effects of doxorubicin. Combining SGLT-2 inhibitors with doxorubicin may allow higher doses of chemotherapy use. Multiple ongoing clinical trials are investigating the potential therapeutic potential of SGLT-2 inhibitors in various types of cancer. CONCLUSION More large-scale pre-clinical and clinical studies are needed to explore their potential preventive and therapeutic roles of SGLT-2 inhibitors in cancer treatment. In this narrative review, our aim is to explore the pre-clinical and clinical data regarding the potential anti-cancer effects of SGLT-2 inhibitors including the hypothetical pathophysiological mechanisms.
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Affiliation(s)
- Sidar Copur
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Abdullah B Yildiz
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Adrian Covic
- Department of Nephrology, Faculty of Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Iasi, Romania
| | - Mehmet Kanbay
- Department of Medicine, Section of Nephrology, Koc University School of Medicine, Istanbul, Turkey
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10
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Jha D, Prajapati SK, Deb PK, Jaiswal M, Mazumder PM. Madhuca longifolia-hydro-ethanolic-fraction reverses mitochondrial dysfunction and modulates selective GLUT expression in diabetic mice fed with high fat diet. Mol Biol Rep 2024; 51:209. [PMID: 38270737 DOI: 10.1007/s11033-023-08962-9] [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: 07/25/2023] [Accepted: 10/30/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND Metabolic disorder is characterized as chronic low-grade inflammation which elevates the systemic inflammatory markers. The proposed hypothesis behind this includes occurrence of hypoxia due to intake of high fat diet leading to oxidative stress and mitochondrial dysfunction. AIM In the present work our aim was to elucidate the possible mechanism of action of hydroethanolic fraction of M. longifolia leaves against the metabolic disorder. METHOD AND RESULTS In the present investigation, effect of Madhuca longifolia hydroethanolic fraction (MLHEF) on HFD induced obesity and diabetes through mitochondrial action and selective GLUT expression has been studied. In present work, it was observed that HFD (50% of diet) on chronic administration aggravates the metabolic problems by causing reduced imbalanced oxidative stress, ATP production, and altered selective GLUT protein expression. Long term HFD administration reduced (p < 0.001) the SOD, CAT level significantly along with elevated liver function marker AST and ALT. MLHEF administration diminishes this oxidative stress. HFD administration also causes decreased ATP/ADP ratio owing to suppressed mitochondrial function and elevating LDH level. This oxidative imbalance further leads to dysregulated GLUT expression in hepatocytes, skeletal muscles and white adipose tissue. HFD leads to significant (p < 0.001) upregulation in GLUT 1 and 3 expression while significant (p < 0.001) downregulation in GLUT 2 and 4 expressions in WAT, liver and skeletal muscles. Administration of MLHEF significantly (p < 0.001) reduced the LDH level and also reduces the mitochondrial dysfunction. CONCLUSION Imbalances in GLUT levels were significantly reversed in order to maintain GLUT expression in tissues on the administration of MLHEF.
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Affiliation(s)
- Dhruv Jha
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, 835215, India.
| | - Santosh Kumar Prajapati
- Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL, 33613, USA
| | - Prashanta Kumar Deb
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, 835215, India
| | - Mohit Jaiswal
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, 835215, India
| | - Papiya Mitra Mazumder
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, 835215, India
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11
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Rabbani N, Thornalley PJ. Hexokinase-linked glycolytic overload and unscheduled glycolysis in hyperglycemia-induced pathogenesis of insulin resistance, beta-cell glucotoxicity, and diabetic vascular complications. Front Endocrinol (Lausanne) 2024; 14:1268308. [PMID: 38292764 PMCID: PMC10824962 DOI: 10.3389/fendo.2023.1268308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/12/2023] [Indexed: 02/01/2024] Open
Abstract
Hyperglycemia is a risk factor for the development of insulin resistance, beta-cell glucotoxicity, and vascular complications of diabetes. We propose the hypothesis, hexokinase-linked glycolytic overload and unscheduled glycolysis, in explanation. Hexokinases (HKs) catalyze the first step of glucose metabolism. Increased flux of glucose metabolism through glycolysis gated by HKs, when occurring without concomitant increased activity of glycolytic enzymes-unscheduled glycolysis-produces increased levels of glycolytic intermediates with overspill into effector pathways of cell dysfunction and pathogenesis. HK1 is saturated with glucose in euglycemia and, where it is the major HK, provides for basal glycolytic flux without glycolytic overload. HK2 has similar saturation characteristics, except that, in persistent hyperglycemia, it is stabilized to proteolysis by high intracellular glucose concentration, increasing HK activity and initiating glycolytic overload and unscheduled glycolysis. This drives the development of vascular complications of diabetes. Similar HK2-linked unscheduled glycolysis in skeletal muscle and adipose tissue in impaired fasting glucose drives the development of peripheral insulin resistance. Glucokinase (GCK or HK4)-linked glycolytic overload and unscheduled glycolysis occurs in persistent hyperglycemia in hepatocytes and beta-cells, contributing to hepatic insulin resistance and beta-cell glucotoxicity, leading to the development of type 2 diabetes. Downstream effector pathways of HK-linked unscheduled glycolysis are mitochondrial dysfunction and increased reactive oxygen species (ROS) formation; activation of hexosamine, protein kinase c, and dicarbonyl stress pathways; and increased Mlx/Mondo A signaling. Mitochondrial dysfunction and increased ROS was proposed as the initiator of metabolic dysfunction in hyperglycemia, but it is rather one of the multiple downstream effector pathways. Correction of HK2 dysregulation is proposed as a novel therapeutic target. Pharmacotherapy addressing it corrected insulin resistance in overweight and obese subjects in clinical trial. Overall, the damaging effects of hyperglycemia are a consequence of HK-gated increased flux of glucose metabolism without increased glycolytic enzyme activities to accommodate it.
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Affiliation(s)
| | - Paul J. Thornalley
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
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12
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Tsuno S, Harada K, Horikoshi M, Mita M, Kitaguchi T, Hirai MY, Matsumoto M, Tsuboi T. Mitochondrial ATP concentration decreases immediately after glucose administration to glucose-deprived hepatocytes. FEBS Open Bio 2024; 14:79-95. [PMID: 38049196 PMCID: PMC10761928 DOI: 10.1002/2211-5463.13744] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/15/2023] [Accepted: 12/01/2023] [Indexed: 12/06/2023] Open
Abstract
Hepatocytes can switch their metabolic processes in response to nutrient availability. However, the dynamics of metabolites (such as lactate, pyruvate, and ATP) in hepatocytes during the metabolic switch remain unknown. In this study, we visualized metabolite dynamics in primary cultured hepatocytes during recovery from glucose-deprivation. We observed a decrease in the mitochondrial ATP concentration when glucose was administered to hepatocytes under glucose-deprivation conditions. In contrast, there was slight change in the cytoplasmic ATP concentration. A decrease in mitochondrial ATP concentration was associated with increased protein synthesis rather than glycogen synthesis, activation of urea cycle, and production of reactive oxygen species. These results suggest that mitochondrial ATP is important in switching metabolic processes in the hepatocytes.
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Affiliation(s)
- Saki Tsuno
- Department of Life Sciences, Graduate School of Arts and SciencesThe University of TokyoTokyoJapan
- Dairy Science and Technology InstituteKyodo Milk Industry Co., Ltd.TokyoJapan
| | - Kazuki Harada
- Department of Life Sciences, Graduate School of Arts and SciencesThe University of TokyoTokyoJapan
| | - Mina Horikoshi
- Department of Biological Sciences, Graduate School of ScienceThe University of TokyoTokyoJapan
| | - Marie Mita
- Department of Life Sciences, Graduate School of Arts and SciencesThe University of TokyoTokyoJapan
- Present address:
Biomedical Research InstituteNational Institute of Advanced Industrial Science and TechnologyOsakaJapan
| | - Tetsuya Kitaguchi
- Laboratory for Chemistry and Life Science, Institute of Innovative ResearchTokyo Institute of TechnologyYokohamaJapan
| | | | - Mitsuharu Matsumoto
- Dairy Science and Technology InstituteKyodo Milk Industry Co., Ltd.TokyoJapan
| | - Takashi Tsuboi
- Department of Life Sciences, Graduate School of Arts and SciencesThe University of TokyoTokyoJapan
- Department of Biological Sciences, Graduate School of ScienceThe University of TokyoTokyoJapan
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13
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Zillich L, Wagner J, McMahan RH, Park LM, Hodgkinson C, Kovacs EJ, Lohoff FW. Multi-omics analysis of alcohol effects on the liver in young and aged mice. Addict Biol 2023; 28:e13342. [PMID: 38017640 DOI: 10.1111/adb.13342] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 08/10/2023] [Accepted: 09/13/2023] [Indexed: 11/30/2023]
Abstract
Excessive alcohol consumption has detrimental effects on the entire organism, especially on the liver. The toxicity is partly dependent on age, as older individuals metabolize alcohol more slowly leading to increased cellular injury. This study aimed to investigate the effects of moderate binge drinking on the liver of young and aged mice in a genome-wide multi-omics approach. We determined DNA methylation (DNAm) using the Illumina MouseMethylation array and gene expression by RNA sequencing in 18 female Balb/c mice in a 2 × 2 design. The animals underwent three moderate binge drinking cycles (ethanol vs. vehicle) and liver tissue was harvested at 4 or 19 months of age. We tested differential gene expression (DE) and DNAm associated with ethanol intake in linear models separately in young and aged mice, performed enrichment analyses for pathways and GWAS signatures of problematic alcohol use, and analysed the overlap of DNAm and gene expression. We observed DE in young and aged animals and substantial overlap in genes such as Bhlhe40, Klf10, and Frmd8. DE genes in aged animals were enriched for biological processes related to alcohol metabolism, inflammation, liver fibrosis, and GWAS signatures of problematic alcohol use. We identified overlapping signatures from DNAm and gene expression, for example, Frmd8 in aged and St6galnac4 in young mice. This study offers converging evidence of novel age-related targets in a moderate alcohol consumption model highlighting dysregulations in genes related to alcohol metabolism, inflammation, and liver fibrosis. Future studies are needed to confirm these results and elucidate the underlying mechanisms.
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Affiliation(s)
- Lea Zillich
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Mannheim, Germany
| | - Josephin Wagner
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Rachel H McMahan
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, Alcohol Research Program, Burn Research Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA
- GI and Liver Innate Immune Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Lauren M Park
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Colin Hodgkinson
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Mental Health, Bethesda, Maryland, USA
| | - Elizabeth J Kovacs
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, Alcohol Research Program, Burn Research Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA
- GI and Liver Innate Immune Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA
- Veterans Health Administration, Eastern Colorado Health Care System, Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC), Aurora, Colorado, USA
| | - Falk W Lohoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
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14
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Sen A, Youssef S, Wendt K, Anakk S. Depletion of IQ motif-containing GTPase activating protein 2 (IQGAP2) reduces hepatic glycogen and impairs insulin signaling. J Biol Chem 2023; 299:105322. [PMID: 37805137 PMCID: PMC10652104 DOI: 10.1016/j.jbc.2023.105322] [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: 04/30/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 10/09/2023] Open
Abstract
The liver is critical in maintaining metabolic homeostasis, regulating both anabolic and catabolic processes. Scaffold protein IQ motif-containing GTPase activating protein 2 (IQGAP2) is highly expressed in the liver and implicated in fatty acid uptake. However, its role in coordinating either fed or fasted responses is not well understood. Here we report that IQGAP2 is widely expressed in the liver that is pronounced in the pericentral region. Although control and IQGAP2 knockout mouse model showed comparable hepatic gene expression in the fasted state, we found significant defects in fed state responses. Glycogen levels were reduced in the periportal region when IQGAP2 was deleted. Consistently, we observed a decrease in phosphorylated glycogen synthase kinase 3α and total glycogen synthase protein in the fed IQGAP2 knockout mice which suggest inadequate glycogen synthesis. Moreover, immunoprecipitation of IQGAP2 revealed its interaction with GSK3 and GYS. Furthermore, our study demonstrated that knocking down IQGAP2 in vitro significantly decreased the phosphorylation of AKT and forkhead box O3 proteins downstream of insulin signaling. These findings suggest that IQGAP2 contributes to liver fed state metabolism by interacting with glycogen synthesis regulators and affecting the phosphorylation of insulin pathway components. Our results suggest that IQGAP2 plays a role in regulating fed state metabolism.
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Affiliation(s)
- Anushna Sen
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Sara Youssef
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Karen Wendt
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Sayeepriyadarshini Anakk
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA; Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.
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15
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Li Y, Tang S, Shi X, Lv J, Wu X, Zhang Y, Wang H, He J, Zhu Y, Ju Y, Zhang Y, Guo S, Yang W, Yin H, Chen L, Gao D, Jin G. Metabolic classification suggests the GLUT1/ALDOB/G6PD axis as a therapeutic target in chemotherapy-resistant pancreatic cancer. Cell Rep Med 2023; 4:101162. [PMID: 37597521 PMCID: PMC10518604 DOI: 10.1016/j.xcrm.2023.101162] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 06/14/2023] [Accepted: 07/26/2023] [Indexed: 08/21/2023]
Abstract
Metabolic reprogramming is known as an emerging mechanism of chemotherapy resistance, but the metabolic signatures of pancreatic ductal adenocarcinomas (PDACs) remain unclear. Here, we characterize the metabolomic profile of PDAC organoids and classify them into glucomet-PDAC (high glucose metabolism levels) and lipomet-PDAC (high lipid metabolism levels). Glucomet-PDACs are more resistant to chemotherapy than lipomet-PDACs, and patients with glucomet-PDAC have a worse prognosis. Integrated analyses reveal that the GLUT1/aldolase B (ALDOB)/glucose-6-phosphate dehydrogenase (G6PD) axis induces chemotherapy resistance by remodeling glucose metabolism in glucomet-PDAC. Increased glycolytic flux, G6PD activity, and pyrimidine biosynthesis are identified in glucomet-PDAC with high GLUT1 and low ALDOB expression, and these phenotypes could be reversed by inhibiting GLUT1 expression or by increasing ALDOB expression. Pharmacological inhibition of GLUT1 or G6PD enhances the chemotherapy response of glucomet-PDAC. Our findings uncover potential metabolic heterogeneity related to differences in chemotherapy sensitivity in PDAC and develop a promising pharmacological strategy for patients with chemotherapy-resistant glucomet-PDAC through the combination of chemotherapy and GLUT1/ALDOB/G6PD axis inhibitors.
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Affiliation(s)
- Yunguang Li
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shijie Tang
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohan Shi
- Department of Hepatobiliary Pancreatic Surgery, Changhai Hospital, Second Military Medical University (Naval Medical University), Shanghai 200433, China
| | - Jingwen Lv
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety Research, Shanghai Institute of Nutrition and Health (SINH), Innovation Center for Intervention of Chronic Disease and Promotion of Health, Chinese Academy of Sciences (CAS), Shanghai 200031, China
| | - Xueyuan Wu
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yehan Zhang
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huan Wang
- Department of Hepatobiliary Pancreatic Surgery, Changhai Hospital, Second Military Medical University (Naval Medical University), Shanghai 200433, China
| | - Juan He
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yiqin Zhu
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yi Ju
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yajuan Zhang
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiwei Guo
- Department of Hepatobiliary Pancreatic Surgery, Changhai Hospital, Second Military Medical University (Naval Medical University), Shanghai 200433, China
| | - Weiwei Yang
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou 310024, China.
| | - Huiyong Yin
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety Research, Shanghai Institute of Nutrition and Health (SINH), Innovation Center for Intervention of Chronic Disease and Promotion of Health, Chinese Academy of Sciences (CAS), Shanghai 200031, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China; Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China.
| | - Luonan Chen
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou 310024, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China.
| | - Dong Gao
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China.
| | - Gang Jin
- Department of Hepatobiliary Pancreatic Surgery, Changhai Hospital, Second Military Medical University (Naval Medical University), Shanghai 200433, China.
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16
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Groeger M, Matsuo K, Heidary Arash E, Pereira A, Le Guillou D, Pino C, Telles-Silva KA, Maher JJ, Hsiao EC, Willenbring H. Modeling and therapeutic targeting of inflammation-induced hepatic insulin resistance using human iPSC-derived hepatocytes and macrophages. Nat Commun 2023; 14:3902. [PMID: 37400454 PMCID: PMC10318012 DOI: 10.1038/s41467-023-39311-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 06/07/2023] [Indexed: 07/05/2023] Open
Abstract
Hepatic insulin resistance is recognized as a driver of type 2 diabetes and fatty liver disease but specific therapies are lacking. Here we explore the potential of human induced pluripotent stem cells (iPSCs) for modeling hepatic insulin resistance in vitro, with a focus on resolving the controversy about the impact of inflammation in the absence of steatosis. For this, we establish the complex insulin signaling cascade and the multiple inter-dependent functions constituting hepatic glucose metabolism in iPSC-derived hepatocytes (iPSC-Heps). Co-culture of these insulin-sensitive iPSC-Heps with isogenic iPSC-derived pro-inflammatory macrophages induces glucose output by preventing insulin from inhibiting gluconeogenesis and glycogenolysis and activating glycolysis. Screening identifies TNFα and IL1β as the mediators of insulin resistance in iPSC-Heps. Neutralizing these cytokines together restores insulin sensitivity in iPSC-Heps more effectively than individual inhibition, reflecting specific effects on insulin signaling and glucose metabolism mediated by NF-κB or JNK. These results show that inflammation is sufficient to induce hepatic insulin resistance and establish a human iPSC-based in vitro model to mechanistically dissect and therapeutically target this metabolic disease driver.
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Affiliation(s)
- Marko Groeger
- Division of Transplant Surgery, Department of Surgery, University of California San Francisco, San Francisco, CA, 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Koji Matsuo
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
- Institute for Human Genetics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Emad Heidary Arash
- Division of Transplant Surgery, Department of Surgery, University of California San Francisco, San Francisco, CA, 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Ashley Pereira
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
- Institute for Human Genetics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Dounia Le Guillou
- Division of Gastroenterology, Department of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
- Liver Center, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Cindy Pino
- Liver Center, University of California San Francisco, San Francisco, CA, 94143, USA
- Genomics CoLab, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Kayque A Telles-Silva
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, 94143, USA
- Human Genome and Stem Cell Research Center, University of Sao Paulo, 05508-090, Sao Paulo, Brazil
| | - Jacquelyn J Maher
- Division of Gastroenterology, Department of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
- Liver Center, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Edward C Hsiao
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, 94143, USA
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
- Institute for Human Genetics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Holger Willenbring
- Division of Transplant Surgery, Department of Surgery, University of California San Francisco, San Francisco, CA, 94143, USA.
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, 94143, USA.
- Liver Center, University of California San Francisco, San Francisco, CA, 94143, USA.
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17
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Chun HJ, Kim ER, Lee M, Choi DH, Kim SH, Shin E, Kim JH, Cho JW, Han DH, Cha BS, Lee YH. Increased expression of sodium-glucose cotransporter 2 and O-GlcNAcylation in hepatocytes drives non-alcoholic steatohepatitis. Metabolism 2023:155612. [PMID: 37277060 DOI: 10.1016/j.metabol.2023.155612] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 05/24/2023] [Accepted: 06/01/2023] [Indexed: 06/07/2023]
Abstract
AIMS Steatosis reducing effects of sodium-glucose cotransporter 2 (SGLT2) inhibitors in non-alcoholic steatohepatitis (NASH) has been consistently reported in humans, but their mechanism remains uncertain. In this study, we examined the expression of SGLT2 in human livers and investigated the crosstalk between SGLT2 inhibition and hepatic glucose uptake, intracellular O-GlcNAcylation, and autophagic regulation in NASH. MATERIALS AND METHODS Human liver samples obtained from subjects with/without NASH were analyzed. For in vitro studies, human normal hepatocytes and hepatoma cells were treated with SGLT2 inhibitor under high-glucose and high-lipid conditions. NASH in vivo was induced by a high-fat, -fructose, and -cholesterol Amylin liver NASH (AMLN) diet for 10 weeks followed by an additional 10 weeks with/without SGLT2 inhibitor (empagliflozin 10 mg/kg/day). RESULTS Liver samples from subjects with NASH were associated with increased SGLT2 and O-GlcNAcylation expression compared with controls. Under NASH condition (in vitro condition with high glucose and lipid), intracellular O-GlcNAcylation and inflammatory markers were increased in hepatocytes and SGLT2 expression was upregulated; SGLT2 inhibitor treatment blocked these changes by directly reducing hepatocellular glucose uptake. In addition, decreased intracellular O-GlcNAcylation by SGLT2 inhibitor promoted autophagic flux through AMPK-TFEB activation. In the AMLN diet-induced NASH mice model, SGLT2 inhibitor alleviated lipid accumulation, inflammation, and fibrosis through autophagy activation related to decreased SGLT2 expression and O-GlcNAcylation in the liver. CONCLUSIONS This study firstly demonstrates increased SGLT2 expression in NASH and secondly reveals the novel effect of SGLT2 inhibition on NASH by activating autophagy mediated by inhibition of hepatocellular glucose uptake and consequently decreasing intracellular O-GlcNAcylation.
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Affiliation(s)
- Hye Jin Chun
- Interdisciplinary Program of Integrated OMICS for Biomedical Science, Yonsei University, Seoul 03722, Republic of Korea; Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Eun Ran Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.; Division of Endocrine and Kidney Disease Research, Department of Chronic Disease Convergence Research, Korea National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, Chungbuk 28159, Republic of Korea
| | - Minyoung Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Da Hyun Choi
- Interdisciplinary Program of Integrated OMICS for Biomedical Science, Yonsei University, Seoul 03722, Republic of Korea; Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Soo Hyun Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Eugene Shin
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jin-Hong Kim
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Won Cho
- Interdisciplinary Program of Integrated OMICS for Biomedical Science, Yonsei University, Seoul 03722, Republic of Korea; Department of Systems Biology, Glycosylation Network Research Center, Yonsei University, Seoul 03722, Republic of Korea
| | - Dai Hoon Han
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea..
| | - Bong-Soo Cha
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul 03722, Republic of Korea..
| | - Yong-Ho Lee
- Interdisciplinary Program of Integrated OMICS for Biomedical Science, Yonsei University, Seoul 03722, Republic of Korea; Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul 03722, Republic of Korea..
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18
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Li H, Beg OU, Rafie AR, Kanwal S, Ovalle-Cisneros A, Faison MO, Siddiqui RA. Characterization of Green and Yellow Papaya ( Carica papaya) for Anti-Diabetic Activity in Liver and Myoblast Cells and Wound-Healing Activity in Fibroblast Cells. Nutrients 2023; 15:1929. [PMID: 37111148 PMCID: PMC10142885 DOI: 10.3390/nu15081929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/07/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Obesity and diabetes, often characterized as "metabolic syndrome", have been recognized as two of the most important public health issues worldwide. The objective of the present research was to evaluate green and yellow papaya for anti-oxidation and anti-diabetic properties. Leaves, skin, pulp, and seed samples from papayas were freeze-dried and then extracted in water or 80% methanol. The extracts were used to determine total polyphenolic content and anti-oxidation activities, and to determine biological activities, including glucose uptake, Glut-2 expression, triglyceride reduction, and wound-healing activity. Our data demonstrated that methanol and water extracts of green and yellow papaya have similar concentrations of polyphenols in skin (10-20 mg/g dry powder), leaf (25-30 mg/g dry powder), and pulp (1-3 mg/g dry powder) fractions. However, both methanol and water extracts of seeds from yellow papaya have substantially higher concentrations of polyphenols compared to green papaya. Both water and methanol extracts of yellow papaya exhibited higher anti-oxidation activity compared to green papaya in skin (50-60%), pulp (200-300%), and seeds (10-800%). Old leaves also showed greater anti-oxidation activity (30-40%) compared to new leaves. Pulp extracts from both yellow and green papaya stimulated greater glucose uptake, but only pulp from green papaya stimulated glucose uptake in muscle cells. Similarly, pulp extract stimulated glucose transporter Glut-2 expression in liver cells. The skin, pulp, and seeds of green or yellow papaya showed triglyceride-lowering activity in liver cells by 60-80%, but samples taken from yellow papaya had a more potent effect. Seeds from both green and yellow papaya significantly stimulated the migration of fibroblasts in the wounded area by 2-2.5-fold compared to the untreated control. Consistent with these data, seeds from both green and yellow papaya also significantly stimulated collagen synthesis in fibroblast cells by almost 3-fold. In conclusion, our data indicate that different parts of papaya produce stimulatory effects on glucose uptake, Glut-2 expression, TG reduction, and wound-healing activities. This study concludes that different parts of the papaya can be beneficial for preventing diabetes and diabetes-related wound healing.
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Affiliation(s)
- Haiwen Li
- Food Chemistry and Nutrition Science Laboratory, Agricultural Research Station, College of Agriculture, Virginia State University, Petersburg, VA 23806, USA; (H.L.); (O.U.B.); (S.K.)
| | - Obaid Ullah Beg
- Food Chemistry and Nutrition Science Laboratory, Agricultural Research Station, College of Agriculture, Virginia State University, Petersburg, VA 23806, USA; (H.L.); (O.U.B.); (S.K.)
| | - Ahmed Reza Rafie
- Cooperate Extension, College of Agriculture, Virginia State University, Petersburg, VA 23806, USA;
| | - Sadia Kanwal
- Food Chemistry and Nutrition Science Laboratory, Agricultural Research Station, College of Agriculture, Virginia State University, Petersburg, VA 23806, USA; (H.L.); (O.U.B.); (S.K.)
| | - Alexandra Ovalle-Cisneros
- Department of Biology, College of Natural Sciences, Virginia State University, Petersburg, VA 23806, USA; (A.O.-C.); (M.O.F.)
| | - Milton Omar Faison
- Department of Biology, College of Natural Sciences, Virginia State University, Petersburg, VA 23806, USA; (A.O.-C.); (M.O.F.)
| | - Rafat Ali Siddiqui
- Food Chemistry and Nutrition Science Laboratory, Agricultural Research Station, College of Agriculture, Virginia State University, Petersburg, VA 23806, USA; (H.L.); (O.U.B.); (S.K.)
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Lahree A, Mello-Vieira J, Mota MM. The nutrient games - Plasmodium metabolism during hepatic development. Trends Parasitol 2023; 39:445-460. [PMID: 37061442 DOI: 10.1016/j.pt.2023.03.013] [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: 10/22/2022] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 04/17/2023]
Abstract
Malaria is a febrile illness caused by species of the protozoan parasite Plasmodium and is characterized by recursive infections of erythrocytes, leading to clinical symptoms and pathology. In mammals, Plasmodium parasites undergo a compulsory intrahepatic development stage before infecting erythrocytes. Liver-stage parasites have a metabolic configuration to facilitate the replication of several thousand daughter parasites. Their metabolism is of interest to identify cellular pathways essential for liver infection, to kill the parasite before onset of the disease. In this review, we summarize the current knowledge on nutrient acquisition and biosynthesis by liver-stage parasites mostly generated in murine malaria models, gaps in knowledge, and challenges to create a holistic view of the development and deficiencies in this field.
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Affiliation(s)
- Aparajita Lahree
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - João Mello-Vieira
- Institute of Biochemistry II, School of Medicine, Goethe University Frankfurt, Frankfurt am Main, Germany; Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Maria M Mota
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.
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20
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Chang YC, Chan MH, Yang YF, Li CH, Hsiao M. Glucose transporter 4: Insulin response mastermind, glycolysis catalyst and treatment direction for cancer progression. Cancer Lett 2023; 563:216179. [PMID: 37061122 DOI: 10.1016/j.canlet.2023.216179] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/27/2023] [Accepted: 04/07/2023] [Indexed: 04/17/2023]
Abstract
The glucose transporter family (GLUT) consists of fourteen members. It is responsible for glucose homeostasis and glucose transport from the extracellular space to the cell cytoplasm to further cascade catalysis. GLUT proteins are encoded by the solute carrier family 2 (SLC2) genes and are members of the major facilitator superfamily of membrane transporters. Moreover, different GLUTs also have their transporter kinetics and distribution, so each GLUT member has its uniqueness and importance to play essential roles in human physiology. Evidence from many studies in the field of diabetes showed that GLUT4 travels between the plasma membrane and intracellular vesicles (GLUT4-storage vesicles, GSVs) and that the PI3K/Akt pathway regulates this activity in an insulin-dependent manner or by the AMPK pathway in response to muscle contraction. Moreover, some published results also pointed out that GLUT4 mediates insulin-dependent glucose uptake. Thus, dysfunction of GLUT4 can induce insulin resistance, metabolic reprogramming in diverse chronic diseases, inflammation, and cancer. In addition to the relationship between GLUT4 and insulin response, recent studies also referred to the potential upstream transcription factors that can bind to the promoter region of GLUT4 to regulating downstream signals. Combined all of the evidence, we conclude that GLUT4 has shown valuable unknown functions and is of clinical significance in cancers, which deserves our in-depth discussion and design compounds by structure basis to achieve therapeutic effects. Thus, we intend to write up a most updated review manuscript to include the most recent and critical research findings elucidating how and why GLUT4 plays an essential role in carcinogenesis, which may have broad interests and impacts on this field.
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Affiliation(s)
- Yu-Chan Chang
- Department of Biomedical Imaging and Radiological Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ming-Hsien Chan
- Department of Biomedical Imaging and Radiological Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi-Fang Yang
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chien-Hsiu Li
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan; Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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21
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Guo H, Wu H, Li Z. The Pathogenesis of Diabetes. Int J Mol Sci 2023; 24:ijms24086978. [PMID: 37108143 PMCID: PMC10139109 DOI: 10.3390/ijms24086978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/30/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Diabetes is the most common metabolic disorder, with an extremely serious effect on health systems worldwide. It has become a severe, chronic, non-communicable disease after cardio-cerebrovascular diseases. Currently, 90% of diabetic patients suffer from type 2 diabetes. Hyperglycemia is the main hallmark of diabetes. The function of pancreatic cells gradually declines before the onset of clinical hyperglycemia. Understanding the molecular processes involved in the development of diabetes can provide clinical care with much-needed updates. This review provides the current global state of diabetes, the mechanisms involved in glucose homeostasis and diabetic insulin resistance, and the long-chain non-coding RNA (lncRNA) associated with diabetes.
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Affiliation(s)
- Huiqin Guo
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Haili Wu
- College of Life Science, Shanxi University, Taiyuan 030006, China
| | - Zhuoyu Li
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China
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22
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Gautier-Stein A, Chilloux J, Soty M, Thorens B, Place C, Zitoun C, Duchampt A, Da Costa L, Rajas F, Lamaze C, Mithieux G. A caveolin-1 dependent glucose-6-phosphatase trafficking contributes to hepatic glucose production. Mol Metab 2023; 70:101700. [PMID: 36870604 PMCID: PMC10023957 DOI: 10.1016/j.molmet.2023.101700] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
OBJECTIVE Deregulation of hepatic glucose production is a key driver in the pathogenesis of diabetes, but its short-term regulation is incompletely deciphered. According to textbooks, glucose is produced in the endoplasmic reticulum by glucose-6-phosphatase (G6Pase) and then exported in the blood by the glucose transporter GLUT2. However, in the absence of GLUT2, glucose can be produced by a cholesterol-dependent vesicular pathway, which remains to be deciphered. Interestingly, a similar mechanism relying on vesicle trafficking controls short-term G6Pase activity. We thus investigated whether Caveolin-1 (Cav1), a master regulator of cholesterol trafficking, might be the mechanistic link between glucose production by G6Pase in the ER and glucose export through a vesicular pathway. METHODS Glucose production from fasted mice lacking Cav1, GLUT2 or both proteins was measured in vitro in primary culture of hepatocytes and in vivo by pyruvate tolerance tests. The cellular localization of Cav1 and the catalytic unit of glucose-6-phosphatase (G6PC1) were studied by western blotting from purified membranes, immunofluorescence on primary hepatocytes and fixed liver sections and by in vivo imaging of chimeric constructs overexpressed in cell lines. G6PC1 trafficking to the plasma membrane was inhibited by a broad inhibitor of vesicular pathways or by an anchoring system retaining G6PC1 specifically to the ER membrane. RESULTS Hepatocyte glucose production is reduced at the step catalyzed by G6Pase in the absence of Cav1. In the absence of both GLUT2 and Cav1, gluconeogenesis is nearly abolished, indicating that these pathways can be considered as the two major pathways of de novo glucose production. Mechanistically, Cav1 colocalizes but does not interact with G6PC1 and controls its localization in the Golgi complex and at the plasma membrane. The localization of G6PC1 at the plasma membrane is correlated to glucose production. Accordingly, retaining G6PC1 in the ER reduces glucose production by hepatic cells. CONCLUSIONS Our data evidence a pathway of glucose production that relies on Cav1-dependent trafficking of G6PC1 to the plasma membrane. This reveals a new cellular regulation of G6Pase activity that contributes to hepatic glucose production and glucose homeostasis.
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Affiliation(s)
- Amandine Gautier-Stein
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France.
| | - Julien Chilloux
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
| | - Maud Soty
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
| | - Bernard Thorens
- Center for Integrative Genomics, University of Lausanne, Genopode Building, 1015, Lausanne, Switzerland
| | - Christophe Place
- Laboratoire de Physique (UMR CNRS 5672), ENS de Lyon, Université de Lyon, F-69364, Lyon cedex 07, France
| | - Carine Zitoun
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
| | - Adeline Duchampt
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
| | - Lorine Da Costa
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
| | - Fabienne Rajas
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
| | - Christophe Lamaze
- Institut Curie, PSL Research University, INSERM U1143, CNRS UMR 3666, Membrane Mechanics and Dynamics of Intracellular Signaling Laboratory, 75005, Paris, France
| | - Gilles Mithieux
- Université Claude Bernard Lyon 1, Université de Lyon, INSERM UMR-S1213, F-69374, Lyon, France
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23
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Tanaka S, Kawamura H, Imoto Y, Urata Y, Hontama S, Oda M, Sakaue M, Ito M. Interaction between inorganic phosphate concentration and glucose metabolism in mild refeeding syndrome model. J Clin Biochem Nutr 2023; 72:126-131. [PMID: 36936877 PMCID: PMC10017325 DOI: 10.3164/jcbn.22-99] [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: 09/19/2022] [Accepted: 11/06/2022] [Indexed: 02/10/2023] Open
Abstract
Refeeding syndrome is a major clinical problem that leads to fatal complications in patients suffering from malnutrition. Hypophosphatemia inevitably is observed at the onset of refeeding syndrome and therefore is monitored during refeeding; however, the causes of metabolic changes in phosphate concentration during refeeding remain poorly understood. In a previous study, we established a refeeding syndrome model employing total parenteral nutrition with insulin-induced hypophosphatemia, but the symptoms were severe and the metabolic mechanisms in this model may not have been representative of clinical conditions. Therefore, we established a new animal model of mild refeeding syndrome by using a shorter fasting period followed by a single refeeding. These mild refeeding syndrome-model rats exhibited hypophosphatemia without increases in urinary phosphate excretion. Interestingly, administration of the combination of phosphate and insulin during refeeding promoted insulin secretion during refeeding. This model implies that Pi may directly promote insulin secretion in pancreatic cells. These results clarify the interaction between phosphate and glucose metabolism pancreatic cells during refeeding syndrome in a mild refeeding syndrome model.
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Affiliation(s)
- Sarasa Tanaka
- Graduate School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
- To whom correspondence should be addressed. E-mail:
| | - Hiromi Kawamura
- Graduate School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
| | - Yumeno Imoto
- School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
| | - Yuri Urata
- School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
| | - Sayuka Hontama
- School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
| | - Momoko Oda
- School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
| | - Motoyoshi Sakaue
- Graduate School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
| | - Mikiko Ito
- Graduate School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-Honcho, Himeji, Hyogo 670-0092, Japan
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24
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Sularea VM, Sugrue JA, O'Farrelly C. Innate antiviral immunity and immunometabolism in hepatocytes. Curr Opin Immunol 2023; 80:102267. [PMID: 36462263 DOI: 10.1016/j.coi.2022.102267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022]
Abstract
The human liver mediates whole-body metabolism, systemic inflammation and responses to hepatotropic pathogens. Hepatocytes, the most abundant cell type of the liver, have critical roles in each of these activities. The regulation of metabolic pathways, such as glucose metabolism, lipid biosynthesis and oxidation, influences whole-organism functionality. However, the immune potential of the liver in general and hepatocytes in particular is also determined by metabolic ability. The major shifts in cellular metabolism required to drive activity in immune cells are now well-described. Given the unique functions of hepatocytes in systemic metabolism and inflammation, and their ability to mediate local antiviral innate immunity, the metabolic shifts required to facilitate these activities are likely to be complex and challenging to define. In this review, we explore what is known about the complex metabolic rewiring required for hepatocytes to respond appropriately to viral infection. We also discuss how viruses can manipulate hepatocyte metabolism to facilitate infection.
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Affiliation(s)
- Vasile Mihai Sularea
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Jamie A Sugrue
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Cliona O'Farrelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland; School of Medicine, Trinity College Dublin, Dublin, Ireland.
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25
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Fritsche K, Ziková-Kloas A, Marx-Stoelting P, Braeuning A. Metabolism-Disrupting Chemicals Affecting the Liver: Screening, Testing, and Molecular Pathway Identification. Int J Mol Sci 2023; 24:ijms24032686. [PMID: 36769005 PMCID: PMC9916672 DOI: 10.3390/ijms24032686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
The liver is the central metabolic organ of the body. The plethora of anabolic and catabolic pathways in the liver is tightly regulated by physiological signaling but may become imbalanced as a consequence of malnutrition or exposure to certain chemicals, so-called metabolic endocrine disrupters, or metabolism-disrupting chemicals (MDCs). Among different metabolism-related diseases, obesity and non-alcoholic fatty liver disease (NAFLD) constitute a growing health problem, which has been associated with a western lifestyle combining excessive caloric intake and reduced physical activity. In the past years, awareness of chemical exposure as an underlying cause of metabolic endocrine effects has continuously increased. Within this review, we have collected and summarized evidence that certain environmental MDCs are capable of contributing to metabolic diseases such as liver steatosis and cholestasis by different molecular mechanisms, thereby contributing to the metabolic syndrome. Despite the high relevance of metabolism-related diseases, standardized mechanistic assays for the identification and characterization of MDCs are missing. Therefore, the current state of candidate test systems to identify MDCs is presented, and their possible implementation into a testing strategy for MDCs is discussed.
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Affiliation(s)
- Kristin Fritsche
- German Federal Institute for Risk Assessment, Department Food Safety, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Andrea Ziková-Kloas
- German Federal Institute for Risk Assessment, Department Pesticides Safety, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Philip Marx-Stoelting
- German Federal Institute for Risk Assessment, Department Pesticides Safety, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Albert Braeuning
- German Federal Institute for Risk Assessment, Department Food Safety, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)30-18412-25100
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26
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Roque-Jiménez JA, Oviedo-Ojeda MF, Whalin M, Lee-Rangel HA, Relling AE. Ewe early gestation supplementation with eicosapentaenoic and docosahexaenoic acids affects the liver, muscle, and adipose tissue fatty acid profile and liver mRNA expression in the offspring. J Anim Sci 2023; 101:skad144. [PMID: 37158288 PMCID: PMC10263116 DOI: 10.1093/jas/skad144] [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: 12/08/2022] [Accepted: 05/05/2023] [Indexed: 05/10/2023] Open
Abstract
Our objectives were to assess the effects of eicosapentaenoic (EPA) and docosahexaenoic acids (DHA) supplementation to pregnant ewes during the first third of gestation on their offspring's liver, adipose, and muscle tissues fatty acid (FA) profile and liver mRNA expression after a finishing period receiving diets with different FA profiles. Twenty-four post-weaning lambs, blocked by sex and body weight, were used in a 2 × 2 factorial arrangement of treatments. The first factor was dam supplementation (DS) in the first third of gestation with 1.61% of Ca salts of palm fatty acid distillate (PFAD) or Ca salts enriched with EPA-DHA. Ewes were exposed to rams with marking paint harnesses during the breeding. Ewes started DS at the day of mating, considered day 1 of conception. Twenty-eight days after mating, ultrasonography was used to confirm pregnancy, and nonpregnant ewes were removed from the groups. After weaning, the offspring lambs were supplemented (LS, second main factor) with two different FA sources (1.48% of PFAD or 1.48% of EPA-DHA) during the growing and fattening phase. Lambs were fed the LS diet for 56 d and sent to slaughter, where the liver, muscle, and adipose tissue samples were collected for FA analysis. Liver samples were collected for relative mRNA expression for genes associated with FA transport and metabolism. The data were analyzed as a mixed model in SAS (9.4). In the liver, the amount of C20:5 and C22:6 (P < 0.01) increased in lambs with LS-EPA-DHA, while some C18:1 cis FA isomers were greater in the lambs from DS-PFAD. In muscle, amounts of C22:1, C20:5, and C22:5 increased (P < 0.05) in lambs born from DS-EPA-DHA. The adipose tissue amounts of C20:5, C22:5, and C22:6 were greater (P < 0.01) in lambs from LS-EPA-DHA. Interactions (DS × LS; P < 0.05) were observed for DNMT3β, FABP-1, FABP-5, SCD, and SREBP-1; having greater mRNA expression in liver tissue of LS-EPA-DHA, DS-PFAD and LS-PFAD, DS-EPA-DHA lambs compared with the lambs in the other two treatments. Liver ELOVL2 mRNA relative expression (P < 0.03) was greater in the offspring of DS-PFAD. Relative mRNA expression (P < 0.05) of GLUT1, IGF-1, LPL, and PPARγ increased in the liver from LS-EPA-DHA lambs. Dam supplementation during early gestation using with different FA sources changed the lipid FA profile in MT, LT, and SAT during the finishing period depending on the tissue and type of FA source administered during the growing phase.
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Affiliation(s)
- José A Roque-Jiménez
- Department of Animal Sciences, The Ohio State University, Ohio Agricultural Research and Development Center (OARDC), Wooster, OH 44691, USA
- Universidad Autónoma de San Luis Potosí, Facultad de Agronomía y Veterinaria, San Luis Potosí 78175, México
| | - Mario F Oviedo-Ojeda
- Department of Animal Sciences, The Ohio State University, Ohio Agricultural Research and Development Center (OARDC), Wooster, OH 44691, USA
- Universidad Autónoma de San Luis Potosí, Facultad de Agronomía y Veterinaria, San Luis Potosí 78175, México
| | - Megan Whalin
- Department of Animal Sciences, The Ohio State University, Ohio Agricultural Research and Development Center (OARDC), Wooster, OH 44691, USA
| | - Héctor A Lee-Rangel
- Universidad Autónoma de San Luis Potosí, Facultad de Agronomía y Veterinaria, San Luis Potosí 78175, México
| | - Alejandro E Relling
- Department of Animal Sciences, The Ohio State University, Ohio Agricultural Research and Development Center (OARDC), Wooster, OH 44691, USA
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Bhat SA, Farooq Z, Ismail H, Corona-Avila I, Khan MW. Unraveling the Sweet Secrets of HCC: Glucometabolic Rewiring in Hepatocellular Carcinoma. Technol Cancer Res Treat 2023; 22:15330338231219434. [PMID: 38083797 PMCID: PMC10718058 DOI: 10.1177/15330338231219434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/06/2023] [Accepted: 11/13/2017] [Indexed: 12/18/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the primary form of liver cancer. It causes ∼ 800 000 deaths per year, which is expected to increase due to increasing rates of obesity and metabolic dysfunction associated steatotic liver disease (MASLD). Current therapies include immune checkpoint inhibitors, tyrosine kinase inhibitors, and monoclonal antibodies, but these therapies are not satisfactorily effective and often come with multiple side effects and recurrences. Metabolic reprogramming plays a significant role in HCC progression and is often conserved between tumor types. Thus, targeting rewired metabolic pathways could provide an attractive option for targeting tumor cells alone or in conjunction with existing treatments. Therefore, there is an urgent need to identify novel targets involved in cancer-mediated metabolic reprogramming in HCC. In this review, we provide an overview of molecular rewiring and metabolic reprogramming of glucose metabolism in HCC to understand better the concepts that might widen the therapeutic window against this deadly cancer.
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Affiliation(s)
- Sheraz Ahmad Bhat
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
- Sri Pratap College, Cluster University Srinagar, Srinagar, Jammu & Kashmir, India
| | - Zeenat Farooq
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
| | - Hagar Ismail
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
| | - Irene Corona-Avila
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
| | - Md. Wasim Khan
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
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Hussain T, Linera-Gonzalez J, Beck JM, Fierro MA, Mair GR, Smith RC, Beck JR. The PTEX Pore Component EXP2 Is Important for Intrahepatic Development during the Plasmodium Liver Stage. mBio 2022; 13:e0309622. [PMID: 36445080 PMCID: PMC9765067 DOI: 10.1128/mbio.03096-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 12/02/2022] Open
Abstract
During vertebrate infection, obligate intracellular malaria parasites develop within a parasitophorous vacuole, which constitutes the interface between the parasite and its hepatocyte or erythrocyte host cells. To traverse this barrier, Plasmodium spp. utilize a dual-function pore formed by EXP2 for nutrient transport and, in the context of the PTEX translocon, effector protein export across the vacuole membrane. While critical to blood-stage survival, less is known about EXP2/PTEX function in the liver stage, although major differences in the export mechanism are suggested by absence of the PTEX unfoldase HSP101 in the intrahepatic vacuole. Here, we employed the glucosamine-activated glmS ribozyme to study the role of EXP2 during Plasmodium berghei liver-stage development in hepatoma cells. Insertion of the glmS sequence into the exp2 3' untranslated region (UTR) enabled glucosamine-dependent depletion of EXP2 after hepatocyte invasion, allowing separation of EXP2 function during intrahepatic development from a recently reported role in hepatocyte invasion. Postinvasion EXP2 knockdown reduced parasite size and largely abolished expression of the mid- to late-liver-stage marker LISP2. As an orthogonal approach to monitor development, EXP2-glmS parasites and controls were engineered to express nanoluciferase. Activation of glmS after invasion substantially decreased luminescence in hepatoma monolayers and in culture supernatants at later time points corresponding to merosome detachment, which marks the culmination of liver-stage development. Collectively, our findings extend the utility of the glmS ribozyme to study protein function in the liver stage and reveal that EXP2 is important for intrahepatic parasite development, indicating that PTEX components also function at the hepatocyte-parasite interface. IMPORTANCE After the mosquito bite that initiates a Plasmodium infection, parasites first travel to the liver and develop in hepatocytes. This liver stage is asymptomatic but necessary for the parasite to transition to the merozoite form, which infects red blood cells and causes malaria. To take over their host cells, avoid immune defenses, and fuel their growth, these obligately intracellular parasites must import nutrients and export effector proteins across a vacuole membrane in which they reside. In the blood stage, these processes depend on a translocon called PTEX, but it is unclear if PTEX also functions during the liver stage. Here, we adapted the glmS ribozyme to control expression of EXP2, the membrane pore component of PTEX, during the liver stage of the rodent malaria parasite Plasmodium berghei. Our results show that EXP2 is important for intracellular development in the hepatocyte, revealing that PTEX components are also functionally important during liver-stage infection.
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Affiliation(s)
- Tahir Hussain
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, USA
| | | | - John M. Beck
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, USA
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, USA
| | - Manuel A. Fierro
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, USA
| | - Gunnar R. Mair
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, USA
| | - Ryan C. Smith
- Department of Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, Iowa, USA
| | - Josh R. Beck
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, USA
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, USA
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Onyango AN. Excessive gluconeogenesis causes the hepatic insulin resistance paradox and its sequelae. Heliyon 2022; 8:e12294. [PMID: 36582692 PMCID: PMC9792795 DOI: 10.1016/j.heliyon.2022.e12294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/18/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Background Hepatic insulin signaling suppresses gluconeogenesis but promotes de novo lipid synthesis. Paradoxically, hepatic insulin resistance (HIR) enhances both gluconeogenesis and de novo lipid synthesis. Elucidation of the etiology of this paradox, which participates in the pathogenesis of non-alcoholic fatty liver disease (NAFLD), cardiovascular disease, the metabolic syndrome and hepatocellular carcinoma, has not been fully achieved. Scope of review This article briefly outlines the previously proposed hypotheses on the etiology of the HIR paradox. It then discusses literature consistent with an alternative hypothesis that excessive gluconeogenesis, the direct effect of HIR, is responsible for the aberrant lipogenesis. The mechanisms involved therein are explained, involving de novo synthesis of fructose and uric acid, promotion of glutamine anaplerosis, and induction of glucagon resistance. Thus, gluconeogenesis via lipogenesis promotes hepatic steatosis, a component of NAFLD, and dyslipidemia. Gluconeogenesis-centred mechanisms for the progression of NAFLD from simple steatosis to non-alcoholic steatohepatitis (NASH) and fibrosis are suggested. That NAFLD often precedes and predicts type 2 diabetes is explained by the ability of lipogenesis to cushion against blood glucose dysregulation in the earlier stages of NAFLD. Major conclusions HIR-induced excessive gluconeogenesis is a major cause of the HIR paradox and its sequelae. Such involvement of gluconeogenesis in lipid synthesis rationalizes the fact that several types of antidiabetic drugs ameliorate NAFLD. Thus, dietary, lifestyle and pharmacological targeting of HIR and hepatic gluconeogenesis may be a most viable approach for the prevention and management of the HIR-associated network of diseases.
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Khayati K, Bhatt V, Lan T, Alogaili F, wang W, Lopez E, Hu ZS, Gokhale S, Cassidy L, Narita M, Xie P, White E, Guo JY. Transient Systemic Autophagy Inhibition Is Selectively and Irreversibly Deleterious to Lung Cancer. Cancer Res 2022; 82:4429-4443. [PMID: 36156071 PMCID: PMC9722642 DOI: 10.1158/0008-5472.can-22-1039] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 08/17/2022] [Accepted: 09/20/2022] [Indexed: 01/24/2023]
Abstract
Autophagy is a conserved catabolic process that maintains cellular homeostasis. Autophagy supports lung tumorigenesis and is a potential therapeutic target in lung cancer. A better understanding of the importance of tumor cell-autonomous versus systemic autophagy in lung cancer could facilitate clinical translation of autophagy inhibition. Here, we exploited inducible expression of Atg5 shRNA to temporally control Atg5 levels and to generate reversible tumor-specific and systemic autophagy loss mouse models of KrasG12D/+;p53-/- (KP) non-small cell lung cancer (NSCLC). Transient suppression of systemic but not tumor Atg5 expression significantly reduced established KP lung tumor growth without damaging normal tissues. In vivo13C isotope tracing and metabolic flux analyses demonstrated that systemic Atg5 knockdown specifically led to reduced glucose and lactate uptake. As a result, carbon flux from glucose and lactate to major metabolic pathways, including the tricarboxylic acid cycle, glycolysis, and serine biosynthesis, was significantly reduced in KP NSCLC following systemic autophagy loss. Furthermore, systemic Atg5 knockdown increased tumor T-cell infiltration, leading to T-cell-mediated tumor killing. Importantly, intermittent transient systemic Atg5 knockdown, which resembles what would occur during autophagy inhibition for cancer therapy, significantly prolonged lifespan of KP lung tumor-bearing mice, resulting in recovery of normal tissues but not tumors. Thus, systemic autophagy supports the growth of established lung tumors by promoting immune evasion and sustaining cancer cell metabolism for energy production and biosynthesis, and the inability of tumors to recover from loss of autophagy provides further proof of concept that inhibition of autophagy is a valid approach to cancer therapy. SIGNIFICANCE Transient loss of systemic autophagy causes irreversible damage to tumors by suppressing cancer cell metabolism and promoting antitumor immunity, supporting autophagy inhibition as a rational strategy for treating lung cancer. See related commentary by Gan, p. 4322.
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Affiliation(s)
- Khoosheh Khayati
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Vrushank Bhatt
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Taijin Lan
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Fawzi Alogaili
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Wenping wang
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Enrique Lopez
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Zhixian Sherrie Hu
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
| | - Samantha Gokhale
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Liam Cassidy
- University of Cambridge, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, CB2 0RE, UK
| | - Masashi Narita
- University of Cambridge, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, CB2 0RE, UK
| | - Ping Xie
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Eileen White
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
- Department of Molecular Biology and Biochemistry, Rutgers University, Piscataway, New Jersey 08854, USA
- Ludwig Princeton Branch, Ludwig Institute for Cancer Research, Princeton University, Princeton, New Jersey 08540, USA
| | - Jessie Yanxiang Guo
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, USA
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey 08901, USA
- Department of Chemical Biology, Rutgers Ernest Mario School of Pharmacy, Piscataway, New Jersey 08854, USA
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Shearer AM, Wang Y, Fletcher EK, Rana R, Michael ES, Nguyen N, Abdelmalek MF, Covic L, Kuliopulos A. PAR2 promotes impaired glucose uptake and insulin resistance in NAFLD through GLUT2 and Akt interference. Hepatology 2022; 76:1778-1793. [PMID: 35603482 PMCID: PMC9669194 DOI: 10.1002/hep.32589] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/28/2022] [Accepted: 05/13/2022] [Indexed: 12/08/2022]
Abstract
BACKGROUND AND AIMS Insulin resistance and poor glycemic control are key drivers of the development of NAFLD and have recently been shown to be associated with fibrosis progression in NASH. However, the underlying mechanisms involving dysfunctional glucose metabolism and relationship with NAFLD/NASH progression remain poorly understood. We set out to determine whether protease-activated receptor 2 (PAR2), a sensor of extracellular inflammatory and coagulation proteases, links NAFLD and NASH with liver glucose metabolism. APPROACH AND RESULTS Here, we demonstrate that hepatic expression of PAR2 increases in patients and mice with diabetes and NAFLD/NASH. Mechanistic studies using whole-body and liver-specific PAR2-knockout mice reveal that hepatic PAR2 plays an unexpected role in suppressing glucose internalization, glycogen storage, and insulin signaling through a bifurcating Gq -dependent mechanism. PAR2 activation downregulates the major glucose transporter of liver, GLUT2, through Gq -MAPK-FoxA3 and inhibits insulin-Akt signaling through Gq -calcium-CaMKK2 pathways. Therapeutic dosing with a liver-homing pepducin, PZ-235, blocked PAR2-Gq signaling and afforded significant improvements in glycemic indices and HbA1c levels in severely diabetic mice. CONCLUSIONS This work provides evidence that PAR2 is a major regulator of liver glucose homeostasis and a potential target for the treatment of diabetes and NASH.
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Affiliation(s)
- Andrew M. Shearer
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
- Tufts University School of Graduate Biomedical Sciences/DMCB, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Yanling Wang
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
| | - Elizabeth K. Fletcher
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
| | - Rajashree Rana
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
| | - Emily S. Michael
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
| | - Nga Nguyen
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
| | - Manal F. Abdelmalek
- Division of Gastroenterology and Hepatology, Duke University Medical Center, Durham, North Carolina, USA
| | - Lidija Covic
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
- Tufts University School of Graduate Biomedical Sciences/DMCB, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Athan Kuliopulos
- Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, Massachusetts, USA
- Tufts University School of Graduate Biomedical Sciences/DMCB, Tufts University School of Medicine, Boston, Massachusetts, USA
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Anti-diabetic effect of hesperidin on palmitate (PA)-treated HepG2 cells and high fat diet-induced obese mice. Food Res Int 2022; 162:112059. [DOI: 10.1016/j.foodres.2022.112059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/17/2022] [Accepted: 10/14/2022] [Indexed: 11/19/2022]
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Pal SC, Eslam M, Mendez-Sanchez N. Detangling the interrelations between MAFLD, insulin resistance, and key hormones. Hormones (Athens) 2022; 21:573-589. [PMID: 35921046 DOI: 10.1007/s42000-022-00391-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/19/2022] [Indexed: 11/04/2022]
Abstract
Metabolic dysfunction-associated fatty liver disease (MAFLD) has increasingly become a significant and highly prevalent cause of chronic liver disease, displaying a wide array of risk factors and pathophysiologic mechanisms of which only a few have so far been clearly elucidated. A bidirectional interaction between hormonal discrepancies and metabolic-related disorders, including obesity, type 2 diabetes mellitus (T2DM), and polycystic ovarian syndrome (PCOS) has been described. Since the change in nomenclature from non-alcoholic fatty liver disease (NAFLD) to MAFLD is based on the clear impact of metabolic elements on the disease, the reciprocal interactions of hormones such as insulin, adipokines (leptin and adiponectin), and estrogens have strongly pointed to the intrinsic links that lead to the heterogeneous epidemiology, clinical presentations, and risk factors involved in MAFLD in different populations. The objective of this work is twofold. Firstly, there is a brief discussion regarding the change in nomenclature as well as epidemiology, risk factors, and pathophysiologic mechanisms other than hormonal effects, which include nutrition and the gut microbiome, as well as genetic and epigenetic influences. Secondly, we review the basis of the most important hormonal factors involved in the development and progression of MAFLD that act both independently and in an interrelated manner.
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Affiliation(s)
- Shreya C Pal
- Faculty of Medicine, National Autonomous University of Mexico, Av. Universidad 3000, Coyoacán, 4510, Mexico City, Mexico
- Liver Research Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150. Col. Toriello Guerra, 14050, Tlalpan, Mexico City, Mexico
| | - Mohammed Eslam
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital, University of Sydney, Sydney, NSW, Australia
| | - Nahum Mendez-Sanchez
- Faculty of Medicine, National Autonomous University of Mexico, Av. Universidad 3000, Coyoacán, 4510, Mexico City, Mexico.
- Liver Research Unit, Medica Sur Clinic & Foundation, Puente de Piedra 150. Col. Toriello Guerra, 14050, Tlalpan, Mexico City, Mexico.
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34
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Okada R, Adachi S, Takiya Y, Iwasaki R, Hirota A, Kikuyama S. Involvement of glucose in freeze tolerance in the Japanese tree frog Hyla japonica. Dev Growth Differ 2022; 64:486-493. [PMID: 36193878 DOI: 10.1111/dgd.12814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/28/2022] [Accepted: 08/16/2022] [Indexed: 01/04/2023]
Abstract
Glycerol and aquaporin 9 (aquaglyceroporin) are known to be involved in freeze tolerance in the Japanese tree frog Hyla japonica. However, the regulatory mechanisms of freeze tolerance in this species have not been fully elucidated. In the present study, we focused on the inter- and intracellular dynamics of glucose to analyze the role of glucose and glucose-related proteins such as transporter and metabolic enzymes in freeze tolerance. Serum glucose concentrations were compared among the frogs that were nonhibernating, hibernating, and thawed after freezing at -4°C for 6 hr. Serum concentrations of glucose in thawed frogs were significantly higher than those in hibernating and nonhibernating, active frogs. Periodic acid-Schiff staining showed that the accumulation of glycogen in the hepatocytes increased before hibernation and decreased after freezing and thawing. Quantitative RT-PCR analysis using the liver showed that, compared with active frogs, the type 2 glucose transporter gene (glut2) was upregulated in frozen frogs, the liver glycogen phosphorylase gene (pygl) was upregulated in frozen or thawed frogs, and the type 2 glycogen synthase gene (gys2) was upregulated in hibernating frogs. Immunohistochemistry of liver sections showed that, compared with nonhibernating frogs, Glut2 proteins were clearly increased most likely on the plasma membrane of hepatocytes in hibernating frogs and further increased by freezing, then decreased after thawing. These results suggest the possibility that glucose acts as a cryoprotectant in H. japonica.
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Affiliation(s)
- Reiko Okada
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka, Japan.,Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Shun Adachi
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka, Japan
| | - Yu Takiya
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka, Japan
| | - Ryohei Iwasaki
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka, Japan
| | - Atsushi Hirota
- Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan.,Bureau of Construction, Tokyo Metropolitan Government, Tokyo, Japan
| | - Sakae Kikuyama
- Department of Biology, Faculty of Education and Integrated Sciences, Center for Advanced Biomedical Sciences, Waseda University, Tokyo, Japan
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35
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SGLT-2 Inhibitors in Cancer Treatment-Mechanisms of Action and Emerging New Perspectives. Cancers (Basel) 2022; 14:cancers14235811. [PMID: 36497303 PMCID: PMC9738342 DOI: 10.3390/cancers14235811] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
A new group of antidiabetic drugs, sodium-glucose cotransporter 2 inhibitors (SGLT-2 inhibitors), have recently been shown to have anticancer effects and their expression has been confirmed in many cancer cell lines. Given the metabolic reprogramming of these cells in a glucose-based model, the ability of SGLT-2 inhibitors to block the glucose uptake by cancer cells appears to be an attractive therapeutic approach. In addition to tumour cells, SGLT-2s are only found in the proximal tubules in the kidneys. Furthermore, as numerous clinical trials have shown, the use of SGLT-2 inhibitors is well-tolerated and safe in patients with diabetes and/or heart failure. In vitro cell culture studies and preclinical in vivo studies have confirmed that SGLT-2 inhibitors exhibit antiproliferative effects on certain types of cancer. However, the mechanisms of this action remain unclear. Even in those tumour cell types in which SGLT-2 is present, there is sometimes an SGLT-2-independent mechanism of anticancer action of this group of drugs. This article presents the current state of knowledge of the potential mechanisms of the anticancer action of SGLT-2 inhibitors and their possible future application in clinical oncology.
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36
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Sharari S, Kabeer B, Mohammed I, Haris B, Pavlovski I, Hawari I, Bhat AA, Toufiq M, Tomei S, Mathew R, Syed N, Nisar S, Maacha S, Grivel JC, Chaussabel D, Ericsson J, Hussain K. Understanding the Role of GLUT2 in Dysglycemia Associated with Fanconi-Bickel Syndrome. Biomedicines 2022; 10:biomedicines10092114. [PMID: 36140215 PMCID: PMC9495670 DOI: 10.3390/biomedicines10092114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/14/2022] [Accepted: 08/15/2022] [Indexed: 12/04/2022] Open
Abstract
Fanconi−Bickel Syndrome (FBS) is a rare disorder of carbohydrate metabolism that is characterized by the accumulation of glycogen mainly in the liver. It is inherited in an autosomal recessive manner due to mutations in the SLC2A2 gene. SLC2A2 encodes for the glucose transporter GLUT2 and is expressed in tissues that are involved in glucose homeostasis. The molecular mechanisms of dysglycemia in FBS are still not clearly understood. In this study, we report two cases of FBS with classical phenotypes of FBS associated with dysglycemia. Genomic DNA was extracted and analyzed by whole-genome and Sanger sequencing, and patient PBMCs were used for molecular analysis. One patient had an exonic SLC2A2 mutation (c.1093C>T in exon 9, R365X), while the other patient had a novel intronic SLC2A2 mutation (c.613-7T>G). Surprisingly, the exonic mutation resulted in the overexpression of dysfunctional GLUT2, resulting in the dysregulated expression of other glucose transporters. The intronic mutation did not affect the coding sequence of GLUT2, its expression, or glucose transport activity. However, it was associated with the expression of miRNAs correlated with type 1 diabetes mellitus, with a particular significant overexpression of hsa-miR-29a-3p implicated in insulin production and secretion. Our findings suggest that SLC2A2 mutations cause dysglycemia in FBS either by a direct effect on GLUT2 expression and/or activity or, indirectly, by the dysregulated expression of miRNAs implicated in glucose homeostasis.
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Affiliation(s)
- Sanaa Sharari
- Division of Biological and Biomedical Sciences, College of Health and Life Sciences, Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha 34110, Qatar
- Department of Pediatric Medicine, Division of Endocrinology, Sidra Medicine, Doha 26999, Qatar
| | | | - Idris Mohammed
- Division of Biological and Biomedical Sciences, College of Health and Life Sciences, Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha 34110, Qatar
- Department of Pediatric Medicine, Division of Endocrinology, Sidra Medicine, Doha 26999, Qatar
| | - Basma Haris
- Department of Pediatric Medicine, Division of Endocrinology, Sidra Medicine, Doha 26999, Qatar
| | | | - Iman Hawari
- Division of Biological and Biomedical Sciences, College of Health and Life Sciences, Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha 34110, Qatar
- Department of Pediatric Medicine, Division of Endocrinology, Sidra Medicine, Doha 26999, Qatar
| | | | | | - Sara Tomei
- Research Branch, Sidra Medicine, Doha 26999, Qatar
| | | | - Najeeb Syed
- Research Branch, Sidra Medicine, Doha 26999, Qatar
| | - Sabah Nisar
- Research Branch, Sidra Medicine, Doha 26999, Qatar
| | - Selma Maacha
- Research Branch, Sidra Medicine, Doha 26999, Qatar
| | | | | | - Johan Ericsson
- Division of Biological and Biomedical Sciences, College of Health and Life Sciences, Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha 34110, Qatar
- School of Medicine and Medical Science, University College Dublin, Belfield, 4 D4 Dublin, Ireland
| | - Khalid Hussain
- Department of Pediatric Medicine, Division of Endocrinology, Sidra Medicine, Doha 26999, Qatar
- Correspondence:
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37
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Kim JE, Kim E, Lee JW. TM4SF5-Mediated Regulation of Hepatocyte Transporters during Metabolic Liver Diseases. Int J Mol Sci 2022; 23:ijms23158387. [PMID: 35955521 PMCID: PMC9369364 DOI: 10.3390/ijms23158387] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/25/2022] [Accepted: 07/28/2022] [Indexed: 02/01/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is found in up to 30% of the world’s population and can lead to hepatocellular carcinoma (HCC), which has a poor 5-year relative survival rate of less than 40%. Clinical therapeutic strategies are not very successful. The co-occurrence of metabolic disorders and inflammatory environments during the development of steatohepatitis thus needs to be more specifically diagnosed and treated to prevent fatal HCC development. To improve diagnostic and therapeutic strategies, the identification of molecules and/or pathways responsible for the initiation and progression of chronic liver disease has been explored in many studies, but further study is still required. Transmembrane 4 L six family member 5 (TM4SF5) has been observed to play roles in the regulation of metabolic functions and activities in hepatocytes using in vitro cell and in vivo animal models without or with TM4SF5 expression in addition to clinical liver tissue samples. TM4SF5 is present on the membranes of different organelles or vesicles and cooperates with transporters for fatty acids, amino acids, and monocarbohydrates, thus regulating nutrient uptake into hepatocytes and metabolism and leading to phenotypes of chronic liver diseases. In addition, TM4SF5 can remodel the immune environment by interacting with immune cells during TM4SF5-mediated chronic liver diseases. Because TM4SF5 may act as an NAFLD biomarker, this review summarizes crosstalk between TM4SF5 and nutrient transporters in hepatocytes, which is related to chronic liver diseases.
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38
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Trends in insulin resistance: insights into mechanisms and therapeutic strategy. Signal Transduct Target Ther 2022; 7:216. [PMID: 35794109 PMCID: PMC9259665 DOI: 10.1038/s41392-022-01073-0] [Citation(s) in RCA: 141] [Impact Index Per Article: 70.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/15/2022] [Accepted: 06/20/2022] [Indexed: 02/06/2023] Open
Abstract
The centenary of insulin discovery represents an important opportunity to transform diabetes from a fatal diagnosis into a medically manageable chronic condition. Insulin is a key peptide hormone and mediates the systemic glucose metabolism in different tissues. Insulin resistance (IR) is a disordered biological response for insulin stimulation through the disruption of different molecular pathways in target tissues. Acquired conditions and genetic factors have been implicated in IR. Recent genetic and biochemical studies suggest that the dysregulated metabolic mediators released by adipose tissue including adipokines, cytokines, chemokines, excess lipids and toxic lipid metabolites promote IR in other tissues. IR is associated with several groups of abnormal syndromes that include obesity, diabetes, metabolic dysfunction-associated fatty liver disease (MAFLD), cardiovascular disease, polycystic ovary syndrome (PCOS), and other abnormalities. Although no medication is specifically approved to treat IR, we summarized the lifestyle changes and pharmacological medications that have been used as efficient intervention to improve insulin sensitivity. Ultimately, the systematic discussion of complex mechanism will help to identify potential new targets and treat the closely associated metabolic syndrome of IR.
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39
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Xu Y, Chai B, Wang X, Wu Z, Gu Z, Liu X, Zhao Y, Chen T, Ma Z, Sun Q. miRNA-199a-5p/SLC2A1 axis regulates glucose metabolism in non-small cell lung cancer. J Cancer 2022; 13:2352-2361. [PMID: 35517408 PMCID: PMC9066207 DOI: 10.7150/jca.67990] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 03/06/2022] [Indexed: 12/22/2022] Open
Abstract
Lung cancer is acknowledged as a common cancer with high morbidity and mortality. MicroRNAs (miRNAs), kind of non-coding single-stranded RNA molecules, can be used in cancer clinical treatments. In this research, miR-199a-5p was seen lowly expressed in NSCLC sera samples. miR-199a-5p suppressed the cell proliferation, migration and arrested cell cycle in NSCLC cell lines. The results showed that SLC2A1 (glucose transporter 1, GLUT1) was a direct target of miR-199a-5p. Downregulation of SLC2A1 could not only inhibit cell proliferation, migration and cell cycle, but also promote cell apoptosis. The data suggests that miR-199a-5p can inhibit glucose metabolism in NSCLC by targeting SLC2A1.This study proves that miR-199a-5p / SLC2A1 can play an essential role in the development of NSCLC by targeting SLC2A1. It puts forward a new approach for clinical treatments of NSCLC.
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Affiliation(s)
- Yikun Xu
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China
| | - Binshu Chai
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China
| | - Xianyi Wang
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China
| | - Zong Wu
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China
| | - Zhitao Gu
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Xiaomin Liu
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China.,Shanghai New Tobacco Product Research Institute, Shanghai, 201315, China
| | - Yiqi Zhao
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China
| | - Tangbing Chen
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Zhongliang Ma
- Lab for Noncoding RNA & Cancer, School of Life Sciences, Shanghai University, 200444, China
| | - Qiangling Sun
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, China.,Thoracic Cancer institute, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, China
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40
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Wang H, Lu J, Alencastro F, Roberts A, Fiedor J, Carroll P, Eisenman RN, Ranganathan S, Torbenson M, Duncan AW, Prochownik EV. Coordinated Cross-Talk Between the Myc and Mlx Networks in Liver Regeneration and Neoplasia. Cell Mol Gastroenterol Hepatol 2022; 13:1785-1804. [PMID: 35259493 PMCID: PMC9046243 DOI: 10.1016/j.jcmgh.2022.02.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND & AIMS The c-Myc (Myc) Basic helix-loop-helix leucine zipper (bHLH-ZIP) transcription factor is deregulated in most cancers. In association with Max, Myc controls target genes that supervise metabolism, ribosome biogenesis, translation, and proliferation. This Myc network crosstalks with the Mlx network, which consists of the Myc-like proteins MondoA and ChREBP, and Max-like Mlx. Together, this extended Myc network regulates both common and distinct gene targets. Here, we studied the consequence of Myc and/or Mlx ablation in the liver, particularly those pertaining to hepatocyte proliferation, metabolism, and spontaneous tumorigenesis. METHODS We examined the ability of hepatocytes lacking Mlx (MlxKO) or Myc+Mlx (double KO [DKO]) to repopulate the liver over an extended period of time in a murine model of type I tyrosinemia. We also compared this and other relevant behaviors, phenotypes, and transcriptomes of the livers with those from previously characterized MycKO, ChrebpKO, and MycKO × ChrebpKO mice. RESULTS Hepatocyte regenerative potential deteriorated as the Extended Myc Network was progressively dismantled. Genes and pathways dysregulated in MlxKO and DKO hepatocytes included those pertaining to translation, mitochondrial function, and hepatic steatosis resembling nonalcoholic fatty liver disease. The Myc and Mlx Networks were shown to crosstalk, with the latter playing a disproportionate role in target gene regulation. All cohorts also developed steatosis and molecular evidence of early steatohepatitis. Finally, MlxKO and DKO mice showed extensive hepatic adenomatosis. CONCLUSIONS In addition to showing cooperation between the Myc and Mlx Networks, this study showed the latter to be more important in maintaining proliferative, metabolic, and translational homeostasis, while concurrently serving as a suppressor of benign tumorigenesis. GEO accession numbers: GSE181371, GSE130178, and GSE114634.
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Affiliation(s)
- Huabo Wang
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jie Lu
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Frances Alencastro
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; McGowan Institute for Regenerative Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Alexander Roberts
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Julia Fiedor
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Patrick Carroll
- Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Robert N Eisenman
- Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | | | - Michael Torbenson
- Department of Laboratory Medicine and Pathology, The Mayo Clinic, Rochester, Minnesota
| | - Andrew W Duncan
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; McGowan Institute for Regenerative Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Edward V Prochownik
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania; Hillman Comprehensive Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Microbiology and Molecular Genetics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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Normal and Neoplastic Growth Suppression by the Extended Myc Network. Cells 2022; 11:cells11040747. [PMID: 35203395 PMCID: PMC8870482 DOI: 10.3390/cells11040747] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/09/2022] [Accepted: 02/15/2022] [Indexed: 12/20/2022] Open
Abstract
Among the first discovered and most prominent cellular oncogenes is MYC, which encodes a bHLH-ZIP transcription factor (Myc) that both activates and suppresses numerous genes involved in proliferation, energy production, metabolism and translation. Myc belongs to a small group of bHLH-ZIP transcriptional regulators (the Myc Network) that includes its obligate heterodimerization partner Max and six "Mxd proteins" (Mxd1-4, Mnt and Mga), each of which heterodimerizes with Max and largely opposes Myc's functions. More recently, a second group of bHLH-ZIP proteins (the Mlx Network) has emerged that bears many parallels with the Myc Network. It is comprised of the Myc-like factors ChREBP and MondoA, which, in association with the Max-like member Mlx, regulate smaller and more functionally restricted repertoires of target genes, some of which are shared with Myc. Opposing ChREBP and MondoA are heterodimers comprised of Mlx and Mxd1, Mxd4 and Mnt, which also structurally and operationally link the two Networks. We discuss here the functions of these "Extended Myc Network" members, with particular emphasis on their roles in suppressing normal and neoplastic growth. These roles are complex due to the temporal- and tissue-restricted expression of Extended Myc Network proteins in normal cells, their regulation of both common and unique target genes and, in some cases, their functional redundancy.
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Castillo-Collado ADC, Frías-Quintana CA, Morales-Garcia V, Alvarez-Villagomez CS, Asencio-Alcudia G, Peña-Marín ES, Martínez-Bautista G, Jiménez-Martinez LD, Álvarez-González CA. Characterization and expression of the gene glucose transporter 2 (GLUT2) in embryonic, larval and adult Bay snook Petenia splendida (Cichliformes: Cichlidae). NEOTROPICAL ICHTHYOLOGY 2022. [DOI: 10.1590/1982-0224-2021-0171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Bay snook (Petenia splendida) is a carnivorous cichlid species with excellent economic value in Southeast Mexico. Although this species presents an excellent potential for commercial aquaculture, the information about its nutritional, physiological, and reproductive metabolic pathways is meager. The current study focuses on the expression of glucose transporter 2 (glut2) in embryos and larvae at 5, 10, 15-, 20-, 25-, and 30-days post-hatch (dph) and in the liver, intestine, kidney, muscle, heart, testicle, gill, stomach, pancreas, and brain of adult fish. The partial sequence of glut2 was obtained, and specific qPCR primers were designed. In embryos, the expression was lower compared to larvae at 5, 15, and 20 dph. The highest expression in larvae occurred at 20 dph and the lowest at 25 and 30 dph. Maximum expression levels in adults occurred in the liver and intestine. Our results show that glut2 is expressed differentially across tissues of adult bay snook, and it fluctuates during larval development.
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Febbraio MA, Karin M. "Sweet death": Fructose as a metabolic toxin that targets the gut-liver axis. Cell Metab 2021; 33:2316-2328. [PMID: 34619076 PMCID: PMC8665123 DOI: 10.1016/j.cmet.2021.09.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/30/2021] [Accepted: 09/09/2021] [Indexed: 02/07/2023]
Abstract
Glucose and fructose are closely related simple sugars, but fructose has been associated more closely with metabolic disease. Until the 1960s, the major dietary source of fructose was fruit, but subsequently, high-fructose corn syrup (HFCS) became a dominant component of the Western diet. The exponential increase in HFCS consumption correlates with the increased incidence of obesity and type 2 diabetes mellitus, but the mechanistic link between these metabolic diseases and fructose remains tenuous. Although dietary fructose was thought to be metabolized exclusively in the liver, evidence has emerged that it is also metabolized in the small intestine and leads to intestinal epithelial barrier deterioration. Along with the clinical manifestations of hereditary fructose intolerance, these findings suggest that, along with the direct effect of fructose on liver metabolism, the gut-liver axis plays a key role in fructose metabolism and pathology. Here, we summarize recent studies on fructose biology and pathology and discuss new opportunities for prevention and treatment of diseases associated with high-fructose consumption.
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Affiliation(s)
- Mark A Febbraio
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia.
| | - Michael Karin
- Department of Pharmacology, School of Medicine, University of California, San Diego, San Diego, CA, USA.
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Chae Y, Yun T, Koo Y, Lee D, Kim H, Yang MP, Kang BT. Characteristics of Physiological 18F-Fluoro-2-Deoxy-D-Glucose Uptake and Comparison Between Cats and Dogs With Positron Emission Tomography. Front Vet Sci 2021; 8:708237. [PMID: 34722693 PMCID: PMC8548631 DOI: 10.3389/fvets.2021.708237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 09/15/2021] [Indexed: 11/23/2022] Open
Abstract
This study aimed to identify the physiological 18F-fluoro-2-deoxy-D-glucose (FDG) uptake in cats using positron emission tomography/computed tomography (PET/CT) and determine its characteristics by comparing physiological differences with dogs. Seven healthy cats and six healthy beagle dogs were examined using FDG-PET/CT. Regions of interest (ROIs) were manually drawn over 41 detailed structures of 5 gross structures (brain, head and neck, musculoskeleton, thorax, and abdomen). The mean and maximum standard uptake values (SUVmean and SUVmax) were calculated for each ROI. Physiological variation was classified as having increased radiopharmaceutical activity with no evidence of abnormal clinical or radiological findings. The brain had the highest SUV, which was observed in the cerebellum of both cats (SUVmean: 4.90 ± 1.04, SUVmax: 6.04 ± 1.24) and dogs (SUVmean: 3.15 ± 0.57, SUVmax: 3.90 ± 0.74). Cats had a significantly higher intracranial uptake than dogs did (P < 0.01). In the digestive system, the SUVs of the duodenum and jejunum were significantly higher in dogs than in cats (P < 0.05). FDG uptake of the submandibular tip, tonsils, neck of the gallbladder, and caudal colliculus were physiologically increased in cats. This study demonstrates physiological FDG uptake in normal tissues, and the differences between cats and dogs were interpreted based on species-specificity. This information contributes to improving the accurate diagnosis of cancer in cats and will aid in understanding glucose metabolism in both cats and dogs.
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Affiliation(s)
- Yeon Chae
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
| | - Taesik Yun
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
| | - Yoonhoi Koo
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
| | - Dohee Lee
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
| | - Hakhyun Kim
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
| | - Mhan-Pyo Yang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
| | - Byeong-Teck Kang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
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Chen J, LaGue E, Li J, Yang C, Hackett EP, Mendoza M, Alger JR, DeBerardinis RJ, Corbin IR, Billingsley KL, Park JM. Profiling Carbohydrate Metabolism in Liver and Hepatocellular Carcinoma with [ 13C]-Glycerate Probes. ANALYSIS & SENSING 2021; 1:196-202. [PMID: 35693130 PMCID: PMC9187054 DOI: 10.1002/anse.202100034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The interplay between glycolysis and gluconeogenesis is central to carbohydrate metabolism. Here, we describe novel methods to assess carbohydrate metabolism using [13C]-probes derived from glycerate, a molecule whose metabolic fate in mammals remains underexplored. Isotope-based studies were conducted via NMR and mass spectrometry analyses of freeze-clamped liver tissue extracts after [2,3-13C2]glycerate infusion. The ex vivo investigations were correlated with in vivo measurements using hyperpolarized [1-13C]glycerate. Application of [13C]glycerate to N-nitrosodiethylamine (DEN)-treated rats provided further assessments of intermediary carbohydrate metabolism in hepatocellular carcinoma. This method afforded direct analyses of control versus DEN tissues, and altered ratios of 13C metabolic products as well as unique glycolysis intermediates were observed in the DEN liver/tumor. Isotopomer studies showed increased glycerate uptake and altered carbohydrate metabolism in the DEN rats.
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Affiliation(s)
- Jun Chen
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8568 (USA)
| | - Evan LaGue
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 State College Blvd. Fullerton, CA 92834-6866 (USA)
| | - Junjie Li
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8568 (USA)
| | - Chendong Yang
- Howard Hughes Medical Institute and Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8502 (USA)
| | - Edward P Hackett
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8568 (USA)
| | - Manuel Mendoza
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 State College Blvd. Fullerton, CA 92834-6866 (USA)
| | - Jeffry R Alger
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8568 (USA)
| | - Ralph J DeBerardinis
- Howard Hughes Medical Institute and Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8502 (USA)
| | - Ian R Corbin
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8568 (USA)
| | - Kelvin L Billingsley
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 State College Blvd. Fullerton, CA 92834-6866 (USA)
| | - Jae Mo Park
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-8568 (USA)
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Miranda-Nuñez JE, Zamilpa-Alvarez A, Fortis-Barrera A, Alarcon-Aguilar FJ, Loza-Rodriguez H, Gomez-Quiroz LE, Salas-Silva S, Flores-Cruz M, Zavala-Sanchez MA, Blancas-Flores G. GLUT4 translocation in C2C12 myoblasts and primary mouse hepatocytes by an antihyperglycemic flavone from Tillandsia usneoides. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 89:153622. [PMID: 34161895 DOI: 10.1016/j.phymed.2021.153622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/23/2021] [Accepted: 05/30/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Type 2 Diabetes (T2D) is characterized by deregulation in carbohydrate and lipid metabolism, with a very high mortality rate. Glucose Transporter type 4 (GLUT4) plays a crucial role in T2D and represents a therapeutic target of interest. Tillandsia usneoides (T. usneoides) is a plant used as a remedy for diabetes. T. usneoides decreased blood glucose in different experimental models. However, the involvement of GLUT4 in this effect has not yet been explored. PURPOSE This study aimed to investigate whether any component in T. usneoides might participate in the effect on blood glucose through a bioassay-guided fractionation, testing its potential antihyperglycemic effect in mice, as well as its influence on GLUT4 translocation in C2C12 myoblasts and primary hepatocytes. METHODS The aqueous extract and the Ethyl Acetate fraction (TU-AcOEt) of T. usneoides were evaluated in a hypoglycemic activity bioassay and in the glucose tolerance test in CD-1 mice. TU-AcOEt was fractionated, obtaining five fractions that were studied in an additional glucose tolerance test. C1F3 was fractioned again, and its fractions (C2F9-12, C2F22-25, and C2F38-44) were examined by HPLC. The C2F38-44 fraction was analyzed by Mass Spectrometry (MS) and subjected to additional fractionation. The fraction C3F6-9 was explored by Nuclear Magnetic Resonance (NMR), resulting in 5,7,4´-trihydroxy-3,6,3´,5´-tetramethoxyflavone (Flav1). Subsequently, a viability test was performed to evaluate the cytotoxic effect of Flav1 and fractions C2F9-12, C2F22-25. C2F38-44, and C3F30-41 in C2C12 myoblasts and primary mouse hepatocytes. Confocal microscopy was also performed to assess the effect of Flav1 and fractions on GLUT4 translocation. RESULTS The TU-AcOEt fraction exhibited a hypoglycemic and antihyperglycemic effect in mice, and its fractionation resulted in five fractions, among which fraction C1F3 decreased blood glucose. MS and NMR analysis revealed the presence of Flav1. Finally, Flav1 significantly promoted the translocation of GLUT4 in C2C12 myoblasts and primary hepatocytes. CONCLUSION To date, Flav1 has not been reported to have activity in GLUT4; this study provides evidence that T. usneoides is a plant with the potential to develop novel therapeutic agents for the control of T2D.
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Affiliation(s)
| | - Alejandro Zamilpa-Alvarez
- Departamento de Fitoquímica Farmacológica, Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos, México
| | - Angeles Fortis-Barrera
- Laboratorio de Farmacología, Departamento de Ciencias de la Salud, DCBS, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, México
| | - Francisco Javier Alarcon-Aguilar
- Laboratorio de Farmacología, Departamento de Ciencias de la Salud, DCBS, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, México
| | - Hilda Loza-Rodriguez
- Laboratorio de Farmacología, Departamento de Ciencias de la Salud, DCBS, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, México
| | - Luis E Gomez-Quiroz
- Área de Medicina Experimental y Traslacional, Departamento de Ciencias de la Salud, DCBS, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, México
| | - Soraya Salas-Silva
- Área de Medicina Experimental y Traslacional, Departamento de Ciencias de la Salud, DCBS, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, México
| | - Maria Flores-Cruz
- Departamento el Hombre y su Ambiente, DCBS, Universidad Autónoma Metropolitana-Xochimilco, Calzada del Hueso 1100, Ciudad de México, México
| | - Miguel Angel Zavala-Sanchez
- Departamento de Sistemas Biológicos, DCBS, Universidad Autónoma Metropolitana-Xochimilco, Calzada del Hueso 1100, Ciudad de México, México
| | - Gerardo Blancas-Flores
- Laboratorio de Farmacología, Departamento de Ciencias de la Salud, DCBS, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Ciudad de México, México.
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Goodarzi P, Habibi M, Roberts K, Sutton J, Shili CN, Lin D, Pezeshki A. Dietary Tryptophan Supplementation Alters Fat and Glucose Metabolism in a Low-Birthweight Piglet Model. Nutrients 2021; 13:2561. [PMID: 34444719 PMCID: PMC8399558 DOI: 10.3390/nu13082561] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/10/2021] [Accepted: 07/21/2021] [Indexed: 12/21/2022] Open
Abstract
Low birthweight (LBW) is associated with metabolic complications, such as glucose and lipid metabolism disturbances in early life. The objective of this study was to assess: (1) the effect of dietary tryptophan (Trp) on glucose and fat metabolism in an LBW piglet model, and (2) the role peripheral 5-hydroxytryptamine type 3 (5HT3) receptors in regulating the feeding behavior in LBW piglets fed with Trp-supplemented diets. Seven-day-old piglets were assigned to 4 treatments: normal birthweight-0%Trp (NBW-T0), LBW-0%Trp (LBW-T0), LBW-0.4%Trp (LBW-T0.4), and LBW-0.8%Trp (LBW-T0.8) for 3 weeks. Compared to LBW-T0, the blood glucose was decreased in LBW-T0.8 at 60 min following the meal test, and the triglycerides were lower in LBW-T0.4 and LBW-T0.8. Relative to LBW-T0, LBW-T0.8 had a lower transcript and protein abundance of hepatic glucose transporter-2, a higher mRNA abundance of glucokinase, and a lower transcript of phosphoenolpyruvate carboxykinase. LBW-T0.4 tended to have a lower protein abundance of sodium-glucose co-transporter 1 in the jejunum. In comparison with LBW-T0, LBW-T0.4 and LBW-T0.8 had a lower transcript of hepatic acetyl-CoA carboxylase, and LBW-T0.4 had a higher transcript of 3-hydroxyacyl-CoA dehydrogenase. Blocking 5-HT3 receptors with ondansetron reduced the feed intake in all groups, with a transient effect on LBW-T0, but more persistent effect on LBW-T0.8 and NBW-T0. In conclusion, Trp supplementation reduced the hepatic lipogenesis and gluconeogenesis, but increased the glycolysis in LBW piglets. Peripheral serotonin is likely involved in the regulation of feeding behavior, particularly in LBW piglets fed diets supplemented with a higher dose of Trp.
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Affiliation(s)
- Parniyan Goodarzi
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA; (P.G.); (M.H.); (K.R.); (J.S.); (C.N.S.)
| | - Mohammad Habibi
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA; (P.G.); (M.H.); (K.R.); (J.S.); (C.N.S.)
| | - Kennedy Roberts
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA; (P.G.); (M.H.); (K.R.); (J.S.); (C.N.S.)
| | - Julia Sutton
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA; (P.G.); (M.H.); (K.R.); (J.S.); (C.N.S.)
| | - Cedrick Ndhumba Shili
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA; (P.G.); (M.H.); (K.R.); (J.S.); (C.N.S.)
| | - Dingbo Lin
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK 74078, USA;
| | - Adel Pezeshki
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA; (P.G.); (M.H.); (K.R.); (J.S.); (C.N.S.)
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Kemas AM, Youhanna S, Zandi Shafagh R, Lauschke VM. Insulin-dependent glucose consumption dynamics in 3D primary human liver cultures measured by a sensitive and specific glucose sensor with nanoliter input volume. FASEB J 2021; 35:e21305. [PMID: 33566368 DOI: 10.1096/fj.202001989rr] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/06/2020] [Accepted: 12/09/2020] [Indexed: 12/27/2022]
Abstract
The liver plays a central role in glucose homeostasis and hepatic insulin resistance constitutes a key feature of type 2 diabetes. However, platforms that accurately mimic human hepatic glucose disposition and allow for rapid and scalable quantification of glucose consumption dynamics are lacking. Here, we developed and optimized a colorimetric glucose assay based on the glucose oxidase-peroxidase system and demonstrate that the system can monitor glucose consumption in 3D primary human liver cell cultures over multiple days. The system was highly sensitive (limit of detection of 3.5 µM) and exceptionally accurate (R2 = 0.999) while requiring only nanoliter input volumes (250 nL), enabling longitudinal profiling of individual liver microtissues. By utilizing a novel polymer, off-stoichiometric thiol-ene (OSTE), and click-chemistry based on thiol-Michael additions, we furthermore show that the assay can be covalently bound to custom-build chips, facilitating the integration of the sensor into microfluidic devices. Using this system, we find that glucose uptake of our 3D human liver cultures closely resembles human hepatic glucose uptake in vivo as measured by euglycemic-hyperinsulinemic clamp. By comparing isogenic insulin-resistant and insulin-sensitive liver cultures we furthermore show that insulin and extracellular glucose levels account for 55% and 45% of hepatic glucose consumption, respectively. In conclusion, the presented data show that the integration of accurate and scalable nanoliter glucose sensors with physiologically relevant organotypic human liver models enables longitudinal profiling of hepatic glucose consumption dynamics that will facilitate studies into the biology and pathobiology of glycemic control, as well as antidiabetic drug screening.
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Affiliation(s)
- Aurino M Kemas
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Sonia Youhanna
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Reza Zandi Shafagh
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Department of Micro and Nanosystem, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Volker M Lauschke
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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Orita E, Becker D, Mueller M, Hefti M, Schuler MJ, Bautista Borrego L, Dutkowski P, Zeimpekis K, Treyer V, Kaufmann PA, Eshmuminov D, Clavien PA, Huellner MW. FDG-PET/CT: novel method for viability assessment of livers perfused ex vivo. Nucl Med Commun 2021; 42:826-832. [PMID: 33741853 DOI: 10.1097/mnm.0000000000001399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Ex vivo liver machine perfusion is a promising option to rescue marginal liver grafts mitigating the donated organ shortage. Recently, a novel liver perfusion machine that can keep injured liver grafts alive for 1 week ex vivo was developed and reported in Nature Biotechnology. However, liver viability assessment ex vivo is an unsolved issue and the value of 18F-fluorodeoxyglucose (FDG)-PET/CT for such purpose was explored. MATERIALS AND METHODS Discarded two human and six porcine liver grafts underwent FDG-PET/CT for viability assessment after 1 week of ex vivo perfusion. PET parameters [standardized uptake value (SUV)max, SUVmean, SUVpeak and total lesion glycolysis] were compared between hepatic lobes and between porcine and human livers. The prevalence of FDG-negative organ parts was recorded. The estimated effective radiation dose for PET/CT was calculated. RESULTS All organs were viable with essentially homogeneous FDG uptake. Of note, viability was preserved in contact areas disclosing the absence of pressure necrosis. Four porcine and two human organs had small superficial FDG-negative areas confirmed as biopsy sites. Total lesion glycolysis was significantly higher in the right hepatic lobe (P = 0.012), while there was no significant difference of SUVmax, SUVmean and SUVpeak between hepatic lobes. There was no significant difference in FDG uptake parameters between porcine and human organs. The estimated effective radiation dose was 1.99 ± 1.67 mSv per organ. CONCLUSION This study demonstrates the feasibility of FDG-PET/CT for viability assessment of ex vivo perfused liver grafts after 1 week.
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Affiliation(s)
- Erika Orita
- Department of Nuclear Medicine, University Hospital of Zurich, University of Zurich
| | - Dustin Becker
- Wyss Zurich, ETH Zurich and University of Zurich
- Transport Processes and Reactions Laboratory, Department of Mechanical and Process Engineering, ETH Zurich
| | - Matteo Mueller
- Wyss Zurich, ETH Zurich and University of Zurich
- Department of Surgery & Transplantation, Swiss Hepato-Pancreato-Biliary (HPB) Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Max Hefti
- Wyss Zurich, ETH Zurich and University of Zurich
- Transport Processes and Reactions Laboratory, Department of Mechanical and Process Engineering, ETH Zurich
| | - Martin J Schuler
- Wyss Zurich, ETH Zurich and University of Zurich
- Transport Processes and Reactions Laboratory, Department of Mechanical and Process Engineering, ETH Zurich
| | - Lucia Bautista Borrego
- Wyss Zurich, ETH Zurich and University of Zurich
- Department of Surgery & Transplantation, Swiss Hepato-Pancreato-Biliary (HPB) Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Philipp Dutkowski
- Wyss Zurich, ETH Zurich and University of Zurich
- Department of Surgery & Transplantation, Swiss Hepato-Pancreato-Biliary (HPB) Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | | | - Valerie Treyer
- Department of Nuclear Medicine, University Hospital of Zurich, University of Zurich
| | - Philipp A Kaufmann
- Department of Nuclear Medicine, University Hospital of Zurich, University of Zurich
| | - Dilmurodjon Eshmuminov
- Wyss Zurich, ETH Zurich and University of Zurich
- Department of Surgery & Transplantation, Swiss Hepato-Pancreato-Biliary (HPB) Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Pierre-Alain Clavien
- Department of Surgery & Transplantation, Swiss Hepato-Pancreato-Biliary (HPB) Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Martin W Huellner
- Department of Nuclear Medicine, University Hospital of Zurich, University of Zurich
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Talamini L, Picchetti P, Ferreira LM, Sitia G, Russo L, Violatto MB, Travaglini L, Fernandez Alarcon J, Righelli L, Bigini P, De Cola L. Organosilica Cages Target Hepatic Sinusoidal Endothelial Cells Avoiding Macrophage Filtering. ACS NANO 2021; 15:9701-9716. [PMID: 34009950 DOI: 10.1021/acsnano.1c00316] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Over the last years, advancements in the use of nanoparticles for biomedical applications have clearly showcased their potential for the preparation of improved imaging and drug-delivery systems. However, compared to the vast number of currently studied nanoparticles for such applications, only a few successfully translate into clinical practice. A common "barrier" that prevents nanoparticles from efficiently delivering their payload to the target site after administration is related to liver filtering, mainly due to nanoparticle uptake by macrophages. This work reports the physicochemical and biological investigation of disulfide-bridged organosilica nanoparticles with cage-like morphology, OSCs, assessing in detail their bioaccumulation in vivo. The fate of intravenously injected 20 nm OSCs was investigated in both healthy and tumor-bearing mice. Interestingly, OSCs exclusively colocalize with hepatic sinusoidal endothelial cells (LSECs) while avoiding Kupffer-cell uptake (less than 6%) under both physiological and pathological conditions. Our findings suggest that organosilica nanocages hold the potential to be used as nanotools for LSECs modulation, potentially impacting key biological processes such as tumor cell extravasation and hepatic immunity to invading metastatic cells or a tolerogenic state in intrahepatic immune cells in autoimmune diseases.
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Affiliation(s)
- Laura Talamini
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Pierre Picchetti
- Université de Strasbourg, ISIS, & CNRS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Lorena Maria Ferreira
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, 20132 Milano, Italy
| | - Giovanni Sitia
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, 20132 Milano, Italy
| | - Luca Russo
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Martina B Violatto
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Leana Travaglini
- Université de Strasbourg, ISIS, & CNRS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Jennifer Fernandez Alarcon
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Lucrezia Righelli
- Université de Strasbourg, ISIS, & CNRS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Paolo Bigini
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Luisa De Cola
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri 2, 20156 Milano, Italy
- Université de Strasbourg, ISIS, & CNRS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
- University of Milano, Dept. DISFARM, Via C. Golgi 19, 20133 Milano, Italy
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