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Coppola A, Capuani B, Pacifici F, Pastore D, Arriga R, Bellia A, Andreadi A, Di Daniele N, Lauro R, Della-Morte D, Sconocchia G, Lauro D. Activation of Peripheral Blood Mononuclear Cells and Leptin Secretion: New Potential Role of Interleukin-2 and High Mobility Group Box (HMGB)1. Int J Mol Sci 2021; 22:ijms22157988. [PMID: 34360753 PMCID: PMC8347813 DOI: 10.3390/ijms22157988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 06/18/2021] [Accepted: 07/22/2021] [Indexed: 01/15/2023] Open
Abstract
Activation of innate immunity and low-grade inflammation contributes to hyperglycemia and an onset of Type 2 Diabetes Mellitus (T2DM). Interleukin-2 (IL-2), leptin, High Mobility Group Box-1 (HMGB-1), and increased glucose concentrations are mediators of these processes also by modulating peripheral blood mononuclear cells (PBMCs) response. The aim of this study was to investigate if HMGB-1 and IL-2 turn on PBMCs and their leptin secretion. In isolated human PBMCs and their subpopulations from healthy individuals and naïve T2DM patients, leptin release, pro-inflammatory response and Toll-like Receptors (TLRs) activation was measured. After treatment with IL-2 and HMGB1, NK (Natural Killer) have the highest amount of leptin secretion, whilst NK-T have the maximal release in basal conditions. TLR4 (TAK242) and/or TLR2 (TLR2-IgA) inhibitors decreased leptin secretion after IL-2 and HMGB1 treatment. A further non-significant increase in leptin secretion was reported in PBMCs of naive T2DM patients in response to IL-2 and HMGB-1 stimulation. Finally, hyperglycemia or hyperinsulinemia might stimulate leptin secretion from PBMCs. The amount of leptin released from PBMCs after the different treatments was enough to stimulate the secretion of IL-1β from monocytes. Targeting leptin sera levels and secretion from PBMCs could represent a new therapeutic strategy to counteract metabolic diseases such as T2DM.
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Affiliation(s)
- Andrea Coppola
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Barbara Capuani
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Francesca Pacifici
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Donatella Pastore
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Roberto Arriga
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Alfonso Bellia
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
| | - Aikaterini Andreadi
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
| | - Nicola Di Daniele
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
| | - Renato Lauro
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - David Della-Morte
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Human Sciences and Quality of Life Promotion, San Raffaele Rome Open University, 00166 Rome, Italy
| | - Giuseppe Sconocchia
- Institute of Translational Pharmacology, National Research Council Rome, 00133 Rome, Italy;
| | - Davide Lauro
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
- Correspondence: ; Tel.: +39-(06)-2090-4666 or +39-(33)-773-5770; Fax: +39-(06)-20904668
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Opgenorth J, Abuajamieh M, Horst EA, Kvidera SK, Johnson JS, Mayorga EJ, Sanz-Fernandez MV, Al-Qaisi MA, DeFrain JM, Kleinschmit DH, Gorden PJ, Baumgard LH. The effects of zinc amino acid complex on biomarkers of gut integrity, inflammation, and metabolism in heat-stressed ruminants. J Dairy Sci 2020; 104:2410-2421. [PMID: 33358164 DOI: 10.3168/jds.2020-18909] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/22/2020] [Indexed: 12/25/2022]
Abstract
Study objectives were to evaluate the effects of replacing 40 mg/kg of dietary Zn from Zn sulfate (ZS) with Zn amino acid complex (ZA; Zinpro Corporation, Eden Prairie, MN) on inflammation and intestinal integrity in heat-stressed and pair-fed (PF) ruminants. Forty Holstein steers (173.6 ± 4.9 kg) were randomly assigned to 1 of 5 dietary-environmental treatments: (1) thermoneutral (TN) ad libitum with 75 mg/kg of dry matter (DM) ZS (ZSCON); (2) TN pair-fed with 75 mg/kg DM ZS (ZSPF); (3) TN pair-fed with 40 mg/kg DM ZA and 35 mg/kg DM ZS (ZAPF); (4) heat stress (HS) ad libitum with 75 mg/kg DM ZS (ZSHS); and (5) HS ad libitum 40 mg/kg DM ZA and 35 mg/kg DM ZS (ZAHS). Before study initiation, calves were fed their respective diets for 21 d. Following the pre-feeding phase, steers were transferred into environmental chambers and were subjected to 2 successive experimental periods. During period 1 (5 d), all steers were fed their respective diets ad libitum and housed in TN conditions (20.2 ± 1.4°C, 30.4 ± 4.3% relative humidity). During period 2 (6 d), ZSHS and ZAHS steers were exposed to cyclical HS conditions (27.1 ± 1.5°C to 35.0 ± 2.9°C, 19.3 ± 3.5% relative humidity), whereas the ZSCON, ZSPF, and ZAPF steers remained in TN conditions and were fed ad libitum or pair-fed relative to their ZSHS and ZAHS counterparts. Overall, steers exposed to HS had markedly increased rectal temperature (0.83°C), respiration rate (26 breaths per min), and skin temperature (8.00°C) relative to TN treatments. Rectal temperature from ZAHS steers was decreased (0.24°C) on d 4 to 6 of HS relative to ZSHS steers. Regardless of diet, HS decreased DMI (18%) relative to ZSCON steers. Circulating glucose from HS and PF steers decreased (16%) relative to ZSCON steers. Heat stress and nutrient restriction increased circulating nonesterified fatty acids 2- and 3-fold, respectively, compared with ZSCON steers. Serum amyloid A increased ~2-fold in PF relative to ZSCON and HS steers. We detected no treatment effect on blood pH; however, ZAHS steers had increased HCO3 relative to ZSHS. Relative to ZSHS, ZAHS steers had increased jejunum villi height (25%), a tendency for increased ileum villi height (9%), and decreased duodenal villi width (16%). In summary, ZA supplementation has some beneficial effects on thermal indices, intestinal architecture characteristics, and biomarkers of leaky gut in heat-stressed steers, indicative of an ameliorated heat load, and thus may be a nutritional strategy to minimize negative consequences of HS.
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Affiliation(s)
- J Opgenorth
- Department of Animal Science, Iowa State University, Ames 50011
| | - M Abuajamieh
- Department of Animal Science, Iowa State University, Ames 50011
| | - E A Horst
- Department of Animal Science, Iowa State University, Ames 50011
| | - S K Kvidera
- Department of Animal Science, Iowa State University, Ames 50011
| | - J S Johnson
- Department of Animal Science, Iowa State University, Ames 50011
| | - E J Mayorga
- Department of Animal Science, Iowa State University, Ames 50011
| | | | - M A Al-Qaisi
- Department of Animal Science, Iowa State University, Ames 50011
| | | | | | - P J Gorden
- Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames 50011
| | - L H Baumgard
- Department of Animal Science, Iowa State University, Ames 50011.
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A Single 48 mg Sucralose Sip Unbalances Monocyte Subpopulations and Stimulates Insulin Secretion in Healthy Young Adults. J Immunol Res 2019; 2019:6105059. [PMID: 31183389 PMCID: PMC6512026 DOI: 10.1155/2019/6105059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/25/2019] [Accepted: 03/14/2019] [Indexed: 12/17/2022] Open
Abstract
Sucralose is a noncaloric artificial sweetener that is widely consumed worldwide and has been associated with alteration in glucose and insulin homeostasis. Unbalance in monocyte subpopulations expressing CD11c and CD206 hallmarks metabolic dysfunction but has not yet been studied in response to sucralose. Our goal was to examine the effect of a single sucralose sip on serum insulin and blood glucose and the percentages of classical, intermediate, and nonclassical monocytes in healthy young adults subjected to an oral glucose tolerance test (OGTT). This study was a randomized, placebo-controlled clinical trial. Volunteers randomly received 60 mL water as placebo (n = 20) or 48 mg sucralose dissolved in 60 mL water (n = 25), fifteen minutes prior to an OGTT. Blood samples were individually drawn every 15 minutes for 180 minutes for quantifying glucose and insulin concentrations. Monocyte subsets expressing CD11c and CD206 were measured at -15 and 180 minutes by flow cytometry. As compared to controls, volunteers receiving sucralose exhibited significant increases in serum insulin at 30, 45, and 180 minutes, whereas blood glucose values showed no significant differences. Sucralose consumption caused a significant 7% increase in classical monocytes and 63% decrease in nonclassical monocytes with respect to placebo controls. Pearson's correlation models revealed a strong association of insulin with sucralose-induced monocyte subpopulation unbalance whereas glucose values did not show significant correlations. Sucralose ingestion decreased CD11c expression in all monocyte subsets and reduced CD206 expression in nonclassical monocytes suggesting that sucralose does not only unbalance monocyte subpopulations but also alter their expression pattern of cell surface molecules. This work demonstrates for the first time that a 48 mg sucralose sip increases serum insulin and unbalances monocyte subpopulations expressing CD11c and CD206 in noninsulin-resistant healthy young adults subjected to an OGTT. The apparently innocuous consumption of sucralose should be reexamined in light of these results.
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Ratter JM, Tack CJ, Netea MG, Stienstra R. Environmental Signals Influencing Myeloid Cell Metabolism and Function in Diabetes. Trends Endocrinol Metab 2018; 29:468-480. [PMID: 29789206 DOI: 10.1016/j.tem.2018.04.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/18/2018] [Accepted: 04/19/2018] [Indexed: 12/13/2022]
Abstract
The environment induces metabolic reprogramming of immune cells via specific signaling pathways. Recent studies have revealed that changes in cell metabolism affect key immune cell functions including cytokine production and migration. In diabetes, these functions are either insufficiently or excessively activated, translating into diabetes-associated complications, including increased susceptibility to infection and accelerated cardiovascular disease. Diabetes alters the abundance of environmental signals, including glucose, insulin, and lipids. Subsequently, changes in environmental signals drive metabolic reprogramming, impair immune cell function, and ultimately contribute to diabetes-associated complications. We review here recent studies on changes in innate immune cell metabolism, especially in myeloid cells, that are driven by environmental signals relevant to diabetes, and discuss therapeutic perspectives of targeting metabolism of immune cells in diabetes.
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Affiliation(s)
- Jacqueline M Ratter
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands
| | - Cees J Tack
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mihai G Netea
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; Department for Genomics and Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Rinke Stienstra
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands.
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Millet P, Vachharajani V, McPhail L, Yoza B, McCall CE. GAPDH Binding to TNF-α mRNA Contributes to Posttranscriptional Repression in Monocytes: A Novel Mechanism of Communication between Inflammation and Metabolism. THE JOURNAL OF IMMUNOLOGY 2016; 196:2541-51. [PMID: 26843329 DOI: 10.4049/jimmunol.1501345] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 01/03/2016] [Indexed: 12/14/2022]
Abstract
Expression of the inflammatory cytokine TNF is tightly controlled. During endotoxin tolerance, transcription of TNF mRNA is repressed, although not entirely eliminated. Production of TNF cytokine, however, is further controlled by posttranscriptional regulation. In this study, we detail a mechanism of posttranscriptional repression of TNF mRNA by GAPDH binding to the TNF 3' untranslated region. Using RNA immunoprecipitation, we demonstrate that GAPDH-TNF mRNA binding increases when THP-1 monocytes are in a low glycolysis state, and that this binding can be reversed by knocking down GAPDH expression or by increasing glycolysis. We show that reducing glycolysis decreases TNF mRNA association with polysomes. We demonstrate that GAPDH-TNF mRNA binding results in posttranscriptional repression of TNF and that the TNF mRNA 3' untranslated region is sufficient for repression. Finally, after exploring this model in THP-1 cells, we demonstrate this mechanism affects TNF expression in primary human monocytes and macrophages. We conclude that GAPDH-TNF mRNA binding regulates expression of TNF based on cellular metabolic state. We think this mechanism has potentially significant implications for treatment of various immunometabolic conditions, including immune paralysis during septic shock.
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Affiliation(s)
- Patrick Millet
- Molecular Genetics and Genomics Program, Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Vidula Vachharajani
- Department of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27157; Department of Anesthesiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Linda McPhail
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27157; and
| | - Barbara Yoza
- Department of General Surgery, Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Charles E McCall
- Department of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27157;
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