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Freitas RDS, de Souza Silva CM, Ferreira Fratelli C, Ramos de Lima L, Morato Stival M, Schwerz Funghetto S, Rodrigues da Silva IC, Vieira de Andrade R. IL-10 and IL-1β Serum Levels, Genetic Variants, and Metabolic Syndrome: Insights into Older Adults' Clinical Characteristics. Nutrients 2024; 16:1241. [PMID: 38674931 PMCID: PMC11053558 DOI: 10.3390/nu16081241] [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: 03/02/2024] [Revised: 04/04/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Populational aging is marked by chronic noncommunicable diseases, such as metabolic syndrome (MetS). IL-10 and IL-1β are pleiotropic cytokines with multiple biological effects linked to metabolic disorders. This cross-sectional study assessed 193 participants' IL-10 and IL-1β serum levels regarding their role in developing MetS, clinical characteristics, and their IL1B rs1143627 and IL10 rs1800890 variants' genotype frequencies in a population over 60. IL-10 levels correlated weakly with HDL levels and fat mass and inversely with triglycerides, glucose, glycated hemoglobin, and estimated average blood glucose levels. IL-10 levels were also indirectly influenced by the patient's T2DM duration, lean mass amount, and bone mineral content. Participants with altered HDL, elevated serum glucose, raised HbA1c levels, or those over 80 had reduced serum IL-10 levels compared to those with normal levels or other age groups, respectively. Women also had higher serum IL-10 levels than men. Dissimilarly, IL-1β levels correlated directly only with the number of total leukocytes and segmented neutrophils, showing only significant variations with self-reported alcohol consumption. Our study also found that those with the IL10 AA genotype (lower IL-10 levels) had a significantly higher risk of developing MetS. These findings may help direct future research and more targeted therapeutic approaches in older adults.
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Affiliation(s)
- Renata de Souza Freitas
- Graduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasilia, Federal District, Brasília 72220-900, Brazil (R.V.d.A.)
| | - Calliandra Maria de Souza Silva
- Graduate Program in Health Sciences and Technologies, Faculty of Ceilândia, University of Brasília, Federal District, Brasília 72220-900, Brazil
- Faculty of Ceilândia, University of Brasilia, Federal District, Brasília 72220-900, Brazil
| | - Caroline Ferreira Fratelli
- Graduate Program in Health Sciences and Technologies, Faculty of Ceilândia, University of Brasília, Federal District, Brasília 72220-900, Brazil
| | - Luciano Ramos de Lima
- Faculty of Ceilândia, University of Brasilia, Federal District, Brasília 72220-900, Brazil
| | - Marina Morato Stival
- Graduate Program in Health Sciences and Technologies, Faculty of Ceilândia, University of Brasília, Federal District, Brasília 72220-900, Brazil
- Faculty of Ceilândia, University of Brasilia, Federal District, Brasília 72220-900, Brazil
| | - Silvana Schwerz Funghetto
- Graduate Program in Health Sciences and Technologies, Faculty of Ceilândia, University of Brasília, Federal District, Brasília 72220-900, Brazil
- Faculty of Ceilândia, University of Brasilia, Federal District, Brasília 72220-900, Brazil
| | - Izabel Cristina Rodrigues da Silva
- Graduate Program in Health Sciences and Technologies, Faculty of Ceilândia, University of Brasília, Federal District, Brasília 72220-900, Brazil
- Faculty of Ceilândia, University of Brasilia, Federal District, Brasília 72220-900, Brazil
| | - Rosângela Vieira de Andrade
- Graduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasilia, Federal District, Brasília 72220-900, Brazil (R.V.d.A.)
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Feng T, Zhang W, Li Z. Potential Mechanisms of Gut-Derived Extracellular Vesicle Participation in Glucose and Lipid Homeostasis. Genes (Basel) 2022; 13:genes13111964. [PMID: 36360201 PMCID: PMC9689624 DOI: 10.3390/genes13111964] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 01/19/2023] Open
Abstract
The intestine participates in the regulation of glucose and lipid metabolism in multiple facets. It is the major site of nutrient digestion and absorption, provides the interface as well as docking locus for gut microbiota, and harbors hormone-producing cells scattered throughout the gut epithelium. Intestinal extracellular vesicles are known to influence the local immune response, whereas their roles in glucose and lipid homeostasis have barely been explored. Hence, this current review summarizes the latest knowledge of cargo substances detected in intestinal extracellular vesicles, and connects these molecules with the fine-tuning regulation of glucose and lipid metabolism in liver, muscle, pancreas, and adipose tissue.
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Affiliation(s)
- Tiange Feng
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing 100191, China
| | - Weizhen Zhang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing 100191, China
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
- Correspondence: (W.Z.); (Z.L.); Tel.: +1-734-615-0360 (W.Z.); +1-207-396-8050 (Z.L.)
| | - Ziru Li
- MaineHealth Institute for Research, MaineHealth, Scarborough, ME 04074, USA
- Correspondence: (W.Z.); (Z.L.); Tel.: +1-734-615-0360 (W.Z.); +1-207-396-8050 (Z.L.)
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3
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Melo APC, Teixeira HMP, Coelho RS, De Jesus TDS, Queiroz GA, Silva HDS, De Almeida YCF, Alcantara-Neves NM, De Matos SMA, D'innocenzo S, Silva RDCR, Lima Barreto M, Costa RDS, Pinto LC, Figueiredo CA. Variants in proinflammatory genes IL1RL1, IL1B and IRF4 are associated with overweight in a pediatric Brazilian population. Gene X 2022; 828:146478. [PMID: 35390444 DOI: 10.1016/j.gene.2022.146478] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Obesity is a chronic complex disease with great prevalence for children all over the world. Characterized for low-grade inflammation associated with several comorbidities such as resistance and type 2 diabetes mellitus (T2DM). OBJECTIVES To investigate whether genetic variants in IL10, IL1RL1, IL1B, IRF4, TNF, IL6, and IL33 genes are associated with being overweight in children. METHODS We performed the genotyping of 1004 children using Illumina 2.5 Human Omni bead chip, and association analysis on the genetic variants and the overweight through logistic regression adjusted for sex, age and components principal. RESULTS Of the seven genes analyzed, 16 SNVs significantly associated. Eleven variants in IL1RL1, two in IL1B and one in IRF4 genes increased overweight risk and two SNVs in IL1RL1 were associated with protection against overweight. The rs2287047-A was negatively associated (OR: 0.66, CI95%: 0.19-0.45) and had a reduced IL1RL1 expression in whole blood (p 0.033) in silico eQTL. The rs12203592-T, in IRF4, was positively associated with being overweight, and led to an increased gene expression in whole blood (p < 0.001) and adipose tissue (p < 0.001). CONCLUSION These results suggest that genetic variants in inflammatory genes may play an important role in the development of overweight in children.
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Affiliation(s)
| | | | - Raisa Santos Coelho
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, BA, Brazil
| | | | | | | | | | | | | | - Silvana D'innocenzo
- Instituto de Saúde Coletiva, Universidade Federal Da Bahia, Salvador, BA, Brazil
| | | | - Maurício Lima Barreto
- Instituto de Saúde Coletiva, Universidade Federal Da Bahia, Salvador, BA, Brazil; CIDACS - Centro de Integração De Dados E Conhecimentos Para Saúde, Fiocruz, Brazil
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4
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Network pharmacology analysis and experimental validation to explore the mechanism of Bushao Tiaozhi capsule (BSTZC) on hyperlipidemia. Sci Rep 2022; 12:6992. [PMID: 35484204 PMCID: PMC9051129 DOI: 10.1038/s41598-022-11139-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/19/2022] [Indexed: 12/03/2022] Open
Abstract
Bushao Tiaozhi Capsule (BSTZC) is a novel drug in China that is used in clinical practice and has significant therapeutic effects on hyperlipidemia (HLP). In our previous study, BSTZC has a good regulatory effect on lipid metabolism of HLP rats. However, its bioactive compounds, potential targets, and underlying mechanism remain largely unclear. We extracted the active ingredients and targets in BSTZC from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) and literature mining. Subsequently, core ingredients, potential targets, and signaling pathways were determined through bioinformatics analysis, including constructed Drug-Ingredient-Gene symbols-Disease (D-I-G-D), protein–protein interaction (PPI), the Gene Ontology (GO), and the Kyoto Encyclopedia of Genes and Genomes (KEGG). Finally, the reliability of the core targets was evaluated using in vivo studies. A total of 36 bioactive ingredients and 209 gene targets were identified in BSTZC. The network analysis revealed that quercetin, kaempferol, wogonin, isorhamnetin, baicalein and luteolin may be the core ingredients. The 26 core targets of BSTZC, including IL-6, TNF, VEGFA, and CASP3, were considered potential therapeutic targets. Furthermore, GO and KEGG analyses indicated that the treatment of HLP by BSTZC might be related to lipopolysaccharide, oxidative stress, inflammatory response and cell proliferation, differentiation and apoptosis. The pathway analysis showed enrichment for different pathways like MAPK signaling pathway, AGE-RAGE signaling pathway in diabetic, IL-17 signaling pathway and TNF signaling pathway. In this study, network pharmacology analysis, and experiment verification were combined, and revealed that BSTZC may regulate key inflammatory markers and apoptosis for ameliorating HLP.
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5
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Jaeger M, Matzaraki V, Aguirre-Gamboa R, Gresnigt MS, Chu X, Johnson MD, Oosting M, Smeekens SP, Withoff S, Jonkers I, Perfect JR, van de Veerdonk FL, Kullberg BJ, Joosten LAB, Li Y, Wijmenga C, Netea MG, Kumar V. A Genome-Wide Functional Genomics Approach Identifies Susceptibility Pathways to Fungal Bloodstream Infection in Humans. J Infect Dis 2020; 220:862-872. [PMID: 31241743 DOI: 10.1093/infdis/jiz206] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/23/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Candidemia, one of the most common causes of fungal bloodstream infection, leads to mortality rates up to 40% in affected patients. Understanding genetic mechanisms for differential susceptibility to candidemia may aid in designing host-directed therapies. METHODS We performed the first genome-wide association study on candidemia, and we integrated these data with variants that affect cytokines in different cellular systems stimulated with Candida albicans. RESULTS We observed strong association between candidemia and a variant, rs8028958, that significantly affects the expression levels of PLA2G4B in blood. We found that up to 35% of the susceptibility loci affect in vitro cytokine production in response to Candida. Furthermore, potential causal genes located within these loci are enriched for lipid and arachidonic acid metabolism. Using an independent cohort, we also showed that the numbers of risk alleles at these loci are negatively correlated with reactive oxygen species and interleukin-6 levels in response to Candida. Finally, there was a significant correlation between susceptibility and allelic scores based on 16 independent candidemia-associated single-nucleotide polymorphisms that affect monocyte-derived cytokines, but not with T cell-derived cytokines. CONCLUSIONS Our results prioritize the disturbed lipid homeostasis and oxidative stress as potential mechanisms that affect monocyte-derived cytokines to influence susceptibility to candidemia.
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Affiliation(s)
- Martin Jaeger
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Vasiliki Matzaraki
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.,University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
| | - Raúl Aguirre-Gamboa
- University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
| | - Mark S Gresnigt
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Xiaojing Chu
- University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
| | - Melissa D Johnson
- Division of Infectious Diseases, Duke University Medical Center, Durham, North Carolina
| | - Marije Oosting
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Sanne P Smeekens
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Sebo Withoff
- University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
| | - Iris Jonkers
- University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
| | - John R Perfect
- Division of Infectious Diseases, Duke University Medical Center, Durham, North Carolina
| | - Frank L van de Veerdonk
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Bart-Jan Kullberg
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Leo A B Joosten
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Yang Li
- University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
| | - Cisca Wijmenga
- University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands.,K.G. Jebsen Coeliac Disease Research Centre, Department of Immunology, University of Oslo, Norway
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.,Human Genomics Laboratory, Craiova University of Medicine and Pharmacy, Craiova, Romania
| | - Vinod Kumar
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.,University of Groningen, University Medical Center Groningen, Department of Genetics, the Netherlands
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Conti P, Lessiani G, Kritas SK, Ronconi G, Caraffa A, Theoharides TC. Mast cells emerge as mediators of atherosclerosis: Special emphasis on IL-37 inhibition. Tissue Cell 2017; 49:393-400. [PMID: 28420489 DOI: 10.1016/j.tice.2017.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/10/2017] [Accepted: 04/10/2017] [Indexed: 02/06/2023]
Abstract
In atherosclerosis lipoproteins stimulate the innate immune response, leading to the release of inflammatory cytokines and chemokines. Hypercholesterolemia may activate the synthesis and release of inflammatory cytokines such as IL-1, which induces TNF release in mast cells (MCs). IL-1 and IL-1 family members orchestrate a broadening list of inflammatory diseases, including atherosclerosis. MCs are implicated in the pathophysiology of several diseases including allergy and inflammation. Activated MCs, located perivascularly, contribute to inflammation in atherosclerosis by producing inflammatory cytokines. MC IL-1-activation leads to the immediate release of inflammatory chemical mediators and TNF, and late inflammatory compounds such as cytokines. MCs can be activated by exogenous cytokines, antigens, microbial products (LPS) and neurotransmitters and generate IL-1 beta, TNF and several other inflammatory cytokines/chemokines along with PGD2, leukotrienes, histamine and proteases. MCs activated with IL-1 induce selective release of IL-6 without degranulation. TNF emerges as one of the most potent inflammatory cytokines involved in the response due to LDL. Cytokines, such as IL-1, IL-6, IL-33 and TNF, are generated in the inflammatory sites by both macrophages and MCs, mediating atherosclerosis. IL-37 (IL-1 family member 7) binds IL-18Ra chain and acts by an intracellular mechanism down-regulating the expression of pro-inflammatory signals cJun, MAP kinase p38a, STAT transcription factors and p53. Blocking IL-1 with IL-37 alleviates the symptoms in patients with inflammatory diseases including arteriosclerosis. The impact of IL-37 on inflammatory cytokines mediating atherosclerosis is beneficial and protective. However, more studies are needed to better define this mechanism and the safety and tolerability of IL-37.
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Affiliation(s)
- Pio Conti
- Immunology Division, Postgraduate Medical School, University of Chieti-Pescara, Viale Unità dell'Italia 73, 66013, Chieti, Italy.
| | - Gianfranco Lessiani
- Angiology Unit, Medicine and Geriatria, Villa Serena Hospital, Città Sant'Angelo, Italy
| | | | - Gianpaolo Ronconi
- Clinica dei Pazienti del Territorio, Policlinico Gemelli, Roma, Italy
| | | | - Theoharis C Theoharides
- Molecular Immunopharmacology and Drug Discovery Laboratory, Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA
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Rai S, Bhatnagar S. Hyperlipidemia, Disease Associations, and Top 10 Potential Drug Targets: A Network View. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2016; 20:152-68. [DOI: 10.1089/omi.2015.0172] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sneha Rai
- Computational and Structural Biology Laboratory, Division of Biotechnology, Netaji Subhas Institute of Technology, Dwarka, New Delhi, India
| | - Sonika Bhatnagar
- Computational and Structural Biology Laboratory, Division of Biotechnology, Netaji Subhas Institute of Technology, Dwarka, New Delhi, India
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Xiao D, Zhang SM, Li X, Yin JY, Gong WJ, Zheng Y, Xu XJ, Lin X, Ji LN, Liu RR, Tang Q, Zhang W, Zhou HH, Han XY, Liu ZQ. IL-1B rs1143623 and EEF1A1P11-RPL7P9 rs10783050 polymorphisms affect the glucose-lowing efficacy of metformin in Chinese overweight or obese Type 2 diabetes mellitus patients. Pharmacogenomics 2015; 16:1621-9. [PMID: 26401715 DOI: 10.2217/pgs.15.95] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Aim: To investigate the potential genetic effect on metformin efficacy in overweight or obese Chinese Type 2 diabetes mellitus (T2DM) patients. Patients & methods: 768 SNPs in or close to 207 genes were genotyped in 84 patients treated with metformin + glibenclamide/Xiaoke Pill. Significant SNPs were then verified in 107 recent-onset overweight or obese T2DM patients treated with metformin alone. Genotyping was done by Illumina GoldenGate Assay. Results: In the discovery stage, 22 SNPs were nominally significant. IL1B rs1143623 (p = 0.011) and EEF1A1P11-RPL7P9 rs10783050 (p = 0.021) were still significantly associated with the relative change of HbA1c in the replication stage. Conclusion: IL1B rs1143623 and EEF1A1P11-RPL7P9 rs10783050 polymorphisms may contribute to metformin's glucose-lowing efficacy in overweight or obese Chinese T2DM patients.
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Affiliation(s)
- Di Xiao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
- Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang 421001, People's Republic of China
| | - Si-Min Zhang
- Department of Endocrinology, The People's Hospital of Peking University, Beijing 100044, People's Republic of China
| | - Xi Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
- Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang 421001, People's Republic of China
| | - Ji-Ye Yin
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
- Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang 421001, People's Republic of China
| | - Wei-Jing Gong
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
| | - Yi Zheng
- The Maternal & Child Health Hospital of Hunan Province, Changsha 410008, People's Republic of China
| | - Xiao-Jing Xu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
| | - Xu Lin
- Institute of Nutrition Science of Shanghai School for Biological Sciences, Chinese Academy of Sciences, Shanghai 20031, People's Republic of China
| | - Li-Nong Ji
- Department of Endocrinology, The People's Hospital of Peking University, Beijing 100044, People's Republic of China
| | - Rang-Ru Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
| | - Qiang Tang
- Department of Pharmacy, The Huaihua Third People's Hospital, Huaihua 418000, People's Republic of China
| | - Wei Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
- Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang 421001, People's Republic of China
| | - Hong-Hao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
- Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang 421001, People's Republic of China
| | - Xue-Yao Han
- Department of Endocrinology, The People's Hospital of Peking University, Beijing 100044, People's Republic of China
| | - Zhao-Qian Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, People's Republic of China
- Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang 421001, People's Republic of China
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van Diepen JA, Stienstra R, Vroegrijk IOCM, van den Berg SAA, Salvatori D, Hooiveld GJ, Kersten S, Tack CJ, Netea MG, Smit JWA, Joosten LAB, Havekes LM, van Dijk KW, Rensen PCN. Caspase-1 deficiency in mice reduces intestinal triglyceride absorption and hepatic triglyceride secretion. J Lipid Res 2012; 54:448-56. [PMID: 23160218 DOI: 10.1194/jlr.m031963] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Caspase-1 is known to activate the proinflammatory cytokines IL-1β and IL-18. Additionally, it can cleave other substrates, including proteins involved in metabolism. Recently, we showed that caspase-1 deficiency in mice strongly reduces high-fat diet-induced weight gain, at least partly caused by an increased energy production. Increased feces secretion by caspase-1-deficient mice suggests that lipid malabsorption possibly further reduces adipose tissue mass. In this study we investigated whether caspase-1 plays a role in triglyceride-(TG)-rich lipoprotein metabolism using caspase-1-deficient and wild-type mice. Caspase-1 deficiency reduced the postprandial TG response to an oral lipid load, whereas TG-derived fatty acid (FA) uptake by peripheral tissues was not affected, demonstrated by unaltered kinetics of [(3)H]TG-labeled very low-density lipoprotein (VLDL)-like emulsion particles. An oral gavage of [(3)H]TG-containing olive oil revealed that caspase-1 deficiency reduced TG absorption and subsequent uptake of TG-derived FA in liver, muscle, and adipose tissue. Similarly, despite an elevated hepatic TG content, caspase-1 deficiency reduced hepatic VLDL-TG production. Intestinal and hepatic gene expression analysis revealed that caspase-1 deficiency did not affect FA oxidation or FA uptake but rather reduced intracellular FA transport, thereby limiting lipid availability for the assembly and secretion of TG-rich lipoproteins. The current study reveals a novel function for caspase-1, or caspase-1-cleaved substrates, in controlling intestinal TG absorption and hepatic TG secretion.
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Affiliation(s)
- Janna A van Diepen
- Department of General Internal Medicine, Endocrinology and Metabolic Diseases, Leiden University Medical Center, Leiden, The Netherlands
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