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Huang YT, Chiu LY, Lu PH, Hsiao PF, Wang JY, Lu PH, Wu NL. AMPK activation modulates IL-36-induced inflammatory responses by regulating IκBζ expression in the skin. Br J Pharmacol 2024; 181:2429-2442. [PMID: 38532634 DOI: 10.1111/bph.16354] [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: 05/21/2023] [Revised: 12/27/2023] [Accepted: 01/21/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND AND PURPOSE The interleukin (IL)-36 pathway is a critical player in the pathogenesis of pustular psoriasis. However, therapies targeting this pathway are limited or unaffordable (e.g. the anti-IL-36 receptor antibody). AMP-activated protein kinase (AMPK), a regulator of cellular energy and metabolism, is known to participate in inflammatory diseases. However, its role in IL-36-induced skin inflammation remains unclear. Therefore, we sought to investigate the role of AMPK signals in regulating IL-36-induced responses in the skin. EXPERIMENTAL APPROACH IL-36-stimulated primary normal human epidermal keratinocytes (NHEKs) and IL-36-injected (intradermally) BALB/c mice served as the cell and animal models, respectively. Additionally, 5-aminoimidazole-4-carboxamide riboside (AICAR) and A769662 served as AMPK activators. KEY RESULTS AICAR and A769662 significantly suppressed the IL-36-induced IL-8 (CXCL8) and CCL20 production from NHEKs. IL-36-induced IκBζ protein expression was prominently reduced and IKK/IκBα phosphorylation was attenuated by AICAR and A769662. Conversely, AMPKα knockdown increased IκBζ protein expression and IKK/IκBα phosphorylation in IL-36-treated NHEKs. Furthermore, AICAR and A769662 enhanced IL-36-induced-IκBζ protein degradation via the proteasome-dependent but not the lysosome-dependent pathway. Pretreatment of NHEKs with IL-36 slightly suppressed the AICAR- and A769662-triggered phosphorylation of AMPK and acetyl-CoA carboxylase. In the mouse model, topical application of AICAR significantly reduced ear swelling, redness, epidermal thickening, neutrophil infiltration and inflammatory and antimicrobial peptide gene expression. CONCLUSION AND IMPLICATIONS AMPK activation suppresses IL-36-induced IL-8 and CCL20 release by regulating IκBζ expression in keratinocytes and reduces IL-36-induced skin inflammation in mice, suggesting that AMPK activation is a potential strategy for treating patients with IL-36-mediated inflammatory skin disorders.
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Affiliation(s)
- Yi-Ting Huang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ling-Ya Chiu
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Nursing, MacKay Medical College, New Taipei City, Taiwan
| | - Po-Hsuan Lu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Pa-Fan Hsiao
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
- MacKay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
| | - Jen-Yu Wang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
- MacKay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
| | - Ping-Hsun Lu
- Department of Chinese Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
- School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan
| | - Nan-Lin Wu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
- MacKay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan
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Brummer C, Singer K, Brand A, Bruss C, Renner K, Herr W, Pukrop T, Dorn C, Hellerbrand C, Matos C, Kreutz M. Sex-Dependent T Cell Dysregulation in Mice with Diet-Induced Obesity. Int J Mol Sci 2024; 25:8234. [PMID: 39125804 PMCID: PMC11311663 DOI: 10.3390/ijms25158234] [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: 06/16/2024] [Revised: 07/20/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024] Open
Abstract
Obesity is an emerging public health problem. Chronic low-grade inflammation is considered a major promotor of obesity-induced secondary diseases such as cardiovascular and fatty liver disease, type 2 diabetes mellitus, and several cancer entities. Most preliminary studies on obesity-induced immune responses have been conducted in male rodents. Sex-specific differences between men and women in obesity-induced immune dysregulation have not yet been fully outlined but are highly relevant to optimizing prevention strategies for overweight-associated complications. In this study, we fed C57BL/6 female vs. male mice with either standard chow or an obesity-inducing diet (OD). Blood and spleen immune cells were isolated and analyzed by flow cytometry. Lean control mice showed no sex bias in systemic and splenic immune cell composition, whereas the immune responses to obesity were significantly distinct between female and male mice. While immune cell alterations in male OD mice were characterized by a significant reduction in T cells and an increase in myeloid-derived suppressor cells (MDSC), female OD mice displayed preserved T cell numbers. The sex-dependent differences in obesity-induced T cell dysregulation were associated with varying susceptibility to body weight gain and fatty liver disease: Male mice showed significantly more hepatic inflammation and histopathological stigmata of fatty liver in comparison to female OD mice. Our findings indicate that sex impacts susceptibility to obesity-induced T cell dysregulation, which might explain sex-dependent different incidences in the development of obesity-associated secondary diseases. These results provide novel insights into the understanding of obesity-induced chronic inflammation from a sex-specific perspective. Given that most nutrition, exercise, and therapeutic recommendations for the prevention of obesity-associated comorbidities do not differentiate between men and women, the data of this study are clinically relevant and should be taken into consideration in future trials and treatment strategies.
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Affiliation(s)
- Christina Brummer
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
| | - Katrin Singer
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
| | - Almut Brand
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
| | - Christina Bruss
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
- Department of Gynecology and Obstetrics, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
| | - Kathrin Renner
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
- Department of Otorhinolaryngology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
| | - Wolfgang Herr
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
| | - Tobias Pukrop
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
- Comprehensive Cancer Center Eastern Bavaria (CCCO), 93053 Regensburg, Germany
- Center of Translational Oncology (CTO), 93053 Regensburg, Germany
| | - Christoph Dorn
- Institute of Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Claus Hellerbrand
- Institute of Biochemistry, University of Erlangen, 91054 Erlangen, Germany
| | - Carina Matos
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
| | - Marina Kreutz
- Department of Internal Medicine III, Hematology and Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, 93053 Regensburg, Germany
- Bavarian Cancer Research Centre (BZKF), 93053 Regensburg, Germany
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3
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Elkins C, Li C. Deciphering visceral adipose tissue regulatory T cells: Key contributors to metabolic health. Immunol Rev 2024; 324:52-67. [PMID: 38666618 PMCID: PMC11262988 DOI: 10.1111/imr.13336] [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] [Indexed: 07/23/2024]
Abstract
Regulatory T cells (Tregs) within the visceral adipose tissue (VAT) play a crucial role in controlling tissue inflammation and maintaining metabolic health. VAT Tregs display a unique transcriptional profile and T cell receptor (TCR) repertoire, and closely interact with adipocytes, stromal cells, and other immune components within the local VAT microenvironment. However, in the context of obesity, there is a notable decline in VAT Tregs, resulting in heightened VAT inflammation and insulin resistance. A comprehensive understanding of the biology of VAT Tregs is essential for the development of Treg-based therapies for mitigating obesity-associated metabolic diseases. Recent advancements in lineage tracing tools, genetic mouse models, and various single cell "omics" techniques have significantly progressed our understandings of the origin, differentiation, and regulation of this unique VAT Treg population at steady state and during obesity. The identification of VAT-Treg precursor cells in the secondary lymphoid organs has also provided important insights into the timing, location, and mechanisms through which VAT Tregs acquire their distinctive phenotype that enables them to function within a lipid-rich microenvironment. In this review, we highlight key recent breakthroughs in the VAT-Treg field while discussing pivotal questions that remain unanswered.
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Affiliation(s)
- Cody Elkins
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Chaoran Li
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, USA
- Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
- Department of Dermatology, Emory University School of Medicine, Atlanta, GA, USA
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4
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Valentine Y, Nikolajczyk BS. T cells in obesity-associated inflammation: The devil is in the details. Immunol Rev 2024; 324:25-41. [PMID: 38767210 DOI: 10.1111/imr.13354] [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] [Indexed: 05/22/2024]
Abstract
Obesity presents a significant health challenge, affecting 41% of adults and 19.7% of children in the United States. One of the associated health challenges of obesity is chronic low-grade inflammation. In both mice and humans, T cells in circulation and in the adipose tissue play a pivotal role in obesity-associated inflammation. Changes in the numbers and frequency of specific CD4+ Th subsets and their contribution to inflammation through cytokine production indicate declining metabolic health, that is, insulin resistance and T2D. While some Th subset alterations are consistent between mice and humans with obesity, some changes mainly characterize male mice, whereas female mice often resist obesity and inflammation. However, protection from obesity and inflammation is not observed in human females, who can develop obesity-related T-cell inflammation akin to males. The decline in female sex hormones after menopause is also implicated in promoting obesity and inflammation. Age is a second underappreciated factor for defining and regulating obesity-associated inflammation toward translating basic science findings to the clinic. Weight loss in mice and humans, in parallel with these other factors, does not resolve obesity-associated inflammation. Instead, inflammation persists amid modest changes in CD4+ T cell frequencies, highlighting the need for further research into resolving changes in T-cell function after weight loss. How lingering inflammation after weight loss affecting the common struggle to maintain lower weight is unknown. Semaglutide, a newly popular pharmaceutical used for treating T2D and reversing obesity, holds promise for alleviating obesity-associated health complications, yet its impact on T-cell-mediated inflammation remains unexplored. Further work in this area could significantly contribute to the scientific understanding of the impacts of weight loss and sex/hormones in obesity and obesity-associated metabolic decline.
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Affiliation(s)
- Yolander Valentine
- Department of Pharmacology and Nutritional Science, University of Kentucky, Lexington, Kentucky, USA
| | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Science, University of Kentucky, Lexington, Kentucky, USA
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky, USA
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, Kentucky, USA
- Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, Kentucky, USA
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5
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Vick LV, Rosario S, Riess JW, Canter RJ, Mukherjee S, Monjazeb AM, Murphy WJ. Potential roles of sex-linked differences in obesity and cancer immunotherapy: revisiting the obesity paradox. NPJ METABOLIC HEALTH AND DISEASE 2024; 2:5. [PMID: 38800540 PMCID: PMC11116109 DOI: 10.1038/s44324-024-00007-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/08/2024] [Indexed: 05/29/2024]
Abstract
Obesity, a condition of excess adiposity usually defined by a BMI > 30, can have profound effects on both metabolism and immunity, connecting the condition with a broad range of diseases, including cancer and negative outcomes. Obesity and cancer have been associated with increased incidence, progression, and poorer outcomes of multiple cancer types in part due to the pro-inflammatory state that arises. Surprisingly, obesity has also recently been demonstrated in both preclinical models and clinical outcomes to be associated with improved response to immune checkpoint inhibition (ICI). These observations have laid the foundation for what has been termed the "obesity paradox". The mechanisms underlying these augmented immunotherapy responses are still unclear given the pleiotropic effects obesity exerts on cells and tissues. Other important variables such as age and sex are being examined as further affecting the obesity effect. Sex-linked factors exert significant influences on obesity biology, metabolism as well as differential effects of different immune cell-types. Age can be another confounding factor contributing to the effects on both sex-linked changes, immune status, and obesity. This review aims to revisit the current body of literature describing the immune and metabolic changes mediated by obesity, the role of obesity on cancer immunotherapy, and to highlight questions on how sex-linked differences may influence obesity and immunotherapy outcome.
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Affiliation(s)
- Logan V. Vick
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA USA
| | - Spencer Rosario
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY USA
- Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY USA
| | - Jonathan W. Riess
- Department of Medicine, Division of Hematology/Oncology, UC Davis Comprehensive Cancer Center, Sacramento, CA USA
| | - Robert J. Canter
- Department of Surgery, Division of Surgical Oncology, University of California Davis Comprehensive Cancer Center, University of California Davis School of Medicine, Sacramento, CA USA
| | - Sarbajit Mukherjee
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY USA
| | - Arta M. Monjazeb
- Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, University of California School of Medicine, Sacramento, CA USA
| | - William J. Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA USA
- Department of Internal Medicine, Division of Malignant Hematology, Cellular Therapy and Transplantation, University of California Davis School of Medicine, Sacramento, CA USA
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6
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Braga Tibaes JR, Barreto Silva MI, Wollin B, Vine D, Tsai S, Richard C. Sex differences in systemic inflammation and immune function in diet-induced obesity rodent models: A systematic review. Obes Rev 2024; 25:e13665. [PMID: 38072656 DOI: 10.1111/obr.13665] [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: 07/05/2023] [Revised: 09/27/2023] [Accepted: 10/05/2023] [Indexed: 02/28/2024]
Abstract
Understanding sex differences in immunological responses in the context of obesity is important to improve health outcomes. This systematic review aimed to investigate sex differences in systemic inflammation, immune cell phenotype, and function in diet-induced obesity (DIO) animal models. A systematic search in Medline, Embase, and CINAHL from inception to April 2023 was conducted, using a combination of the following concepts: sex, obesity, cytokines, and immune cell phenotypes/function. Forty-one publications reporting on systemic inflammation (61%), cell phenotype (44%), and/or function (7%) were included. Females had lower systemic inflammation compared with males in response to DIO intervention and a higher proportion of macrophage (M)2-like cells compared with males that had a higher proportion of M1-like in adipose tissue. Although there were no clear sex differences in immune function, high-fat DIO intervention remains an important factor in the development of immune dysfunction in both males and females, including disturbances in cytokine production, proliferation, and migration of immune cells. Yet, the mechanistic links between diet and obesity on such immune dysfunction remain unclear. Future studies should investigate the role of diet and obesity in the functionality of immune cells and employ adequate methods for a high-quality investigation of sex differences in this context.
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Affiliation(s)
| | - Maria Ines Barreto Silva
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
- Department of Applied Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Bethany Wollin
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Donna Vine
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Sue Tsai
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
| | - Caroline Richard
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
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7
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Ni H, Chen Y. Differentiation, regulation and function of regulatory T cells in non-lymphoid tissues and tumors. Int Immunopharmacol 2023; 121:110429. [PMID: 37327512 DOI: 10.1016/j.intimp.2023.110429] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/18/2023]
Abstract
Regulatory T cells (Tregs) play a substantial role in inhibiting excessive immune response. A large number of studies have focused on the tissue homeostasis maintenance and remodeling characteristics of Tregs in non-lymphoid tissues, such as the skin, colon, lung, brain, muscle, and adipose tissues. Herein, we overview the kinetics of Treg migration to non-lymphoid tissues and adaptation to the specific tissue microenvironment through the development of tissue-specific chemokine receptors, transcription factors, and phenotypes. Additionally, tumor-infiltrating Tregs (Ti-Tregs) play an important role in tumor generation and immunotherapy resistance. The phenotypes of Ti-Tregs are related to the histological location of the tumor and there is a large overlap between the transcripts of Ti-Tregs and those of tissue-specific Tregs. We recapitulate the molecular underpinnings of tissue-specific Tregs, which might shed new light on Treg-based therapeutic targets and biomarkers for inflammatory diseases and cancer.
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Affiliation(s)
- Hongbo Ni
- The First Clinical Medicine Faculty, China Medical University, Shenyang 110001, China
| | - Yinghan Chen
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110001, China.
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8
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Cheru N, Hafler DA, Sumida TS. Regulatory T cells in peripheral tissue tolerance and diseases. Front Immunol 2023; 14:1154575. [PMID: 37197653 PMCID: PMC10183596 DOI: 10.3389/fimmu.2023.1154575] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/13/2023] [Indexed: 05/19/2023] Open
Abstract
Maintenance of peripheral tolerance by CD4+Foxp3+ regulatory T cells (Tregs) is essential for regulating autoreactive T cells. The loss of function of Foxp3 leads to autoimmune disease in both animals and humans. An example is the rare, X-linked recessive disorder known as IPEX (Immune Dysregulation, Polyendocrinopathy, Enteropathy X-linked) syndrome. In more common human autoimmune diseases, defects in Treg function are accompanied with aberrant effector cytokines such as IFNγ. It has recently become appreciated that Tregs plays an important role in not only maintaining immune homeostasis but also in establishing the tissue microenvironment and homeostasis of non-lymphoid tissues. Tissue resident Tregs show profiles that are unique to their local environments which are composed of both immune and non-immune cells. Core tissue-residence gene signatures are shared across different tissue Tregs and are crucial to homeostatic regulation and maintaining the tissue Treg pool in a steady state. Through interaction with immunocytes and non-immunocytes, tissue Tregs exert a suppressive function via conventional ways involving contact dependent and independent processes. In addition, tissue resident Tregs communicate with other tissue resident cells which allows Tregs to adopt to their local microenvironment. These bidirectional interactions are dependent on the specific tissue environment. Here, we summarize the recent advancements of tissue Treg studies in both human and mice, and discuss the molecular mechanisms that maintain tissue homeostasis and prevent pathogenesis.
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Affiliation(s)
- Nardos Cheru
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, United States
| | - David A. Hafler
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, United States
- Department of Neurology, Yale School of Medicine, New Haven, CT, United States
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Tomokazu S. Sumida
- Department of Neurology, Yale School of Medicine, New Haven, CT, United States
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The Contribution of Lipotoxicity to Diabetic Kidney Disease. Cells 2022; 11:cells11203236. [PMID: 36291104 PMCID: PMC9601125 DOI: 10.3390/cells11203236] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/02/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
Lipotoxicity is a fundamental pathophysiologic mechanism in diabetes and non-alcoholic fatty liver disease and is now increasingly recognized in diabetic kidney disease (DKD) pathogenesis. This review highlights lipotoxicity pathways in the podocyte and proximal tubule cell, which are arguably the two most critical sites in the nephron for DKD. The discussion focuses on membrane transporters and lipid droplets, which represent potential therapeutic targets, as well as current and developing pharmacologic approaches to reduce renal lipotoxicity.
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Tsuneki H, Maeda T, Takata S, Sugiyama M, Otsuka K, Ishizuka H, Onogi Y, Tokai E, Koshida C, Kon K, Takasaki I, Hamashima T, Sasahara M, Rudich A, Koya D, Sakurai T, Yanagisawa M, Yamanaka A, Wada T, Sasaoka T. Hypothalamic orexin prevents non-alcoholic steatohepatitis and hepatocellular carcinoma in obesity. Cell Rep 2022; 41:111497. [DOI: 10.1016/j.celrep.2022.111497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 06/22/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
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Kim KD, Choe JM, Myoung S, Lee SH, Kim M, Choi JH, Park HT. Estradiol treatment increases M2-like visceral adipose tissue macrophages in obese ovariectomized mice regardless of its anorectic action. Anim Cells Syst (Seoul) 2022; 26:243-253. [PMID: 36275444 PMCID: PMC9586618 DOI: 10.1080/19768354.2022.2128871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Estradiol (E2) treatment has been known to induce changes in food intake, energy expenditure, and weight gain. However, its direct effects on adipose tissue macrophages (ATM) in vivo are not fully understood. Thus, we aimed to explore this aspect at cellular and molecular levels in ovariectomized obese mice. We examined the changes in ATMs after eight weeks of a high-fat diet (HFD) in male, female, and ovariectomized (OVX) mice. After eight weeks, osmotic pumps were inserted into OVX mice to provide two weeks of E2 treatment. We additionally set up a vehicle Pair-Fed (PF) control group that supplied the same amount of HFD consumed by the E2-treated group. We then investigated the in vivo phenotypic changes of visceral adipose tissue (VAT) macrophages. The percentage of M1-like ATMs decreased by the anorectic effect of E2, while M2-like ATMs increased regardless of the anorexia. E2 treatment increased the expression of anti-inflammatory genes but decreased pro-inflammatory genes in VAT. Monocyte recruitment and local proliferation contributed to M2-like ATMs. Furthermore, M2-like phenotypes were induced by E2 treatment in human macrophages. E2 treatment increases M2-like macrophages and improves the tissue milieu of VAT regardless of the anorectic reaction of E2.
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Affiliation(s)
- Kyeong-dae Kim
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul, Republic of Korea
| | - Jeong Min Choe
- Department of Obstetrics and Gynecology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Soomin Myoung
- Department of Obstetrics and Gynecology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Seung Hyun Lee
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul, Republic of Korea
| | - Minkyu Kim
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul, Republic of Korea
| | - Jae-Hoon Choi
- Department of Life Science, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul, Republic of Korea
| | - Hyun Tae Park
- Department of Obstetrics and Gynecology, College of Medicine, Korea University, Seoul, Republic of Korea
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Pu Y, Ticiani E, Waye AA, Dong K, Zhang H, Veiga-Lopez A. Sex-specific extracellular matrix remodeling during early adipogenic differentiation by gestational bisphenol A exposure. CHEMOSPHERE 2022; 302:134806. [PMID: 35504463 PMCID: PMC9575584 DOI: 10.1016/j.chemosphere.2022.134806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
Bisphenol A (BPA) is an endocrine disrupting chemical known to promote adipose tissue mass in vivo and adipogenesis in vitro. Whether BPA can affect and reprogram early adipogenic differentiation signals that trigger adipogenic differentiation, remains unknown. We hypothesized that gestational BPA exposure results in a preadipocyte phenotype that leads to accelerated adipogenic differentiation, and that this phenotype is sex specific. Primary ovine fetal preadipocytes were derived from control (C) and BPA-exposed during pregnancy and differentiated in vitro. Gestational BPA enhanced lipid accumulation at early stages of differentiation (48 h) and this was evident in females but not male-derived fetal preadipocytes. After an RNA sequencing approach, samples were compared as follows: 2 groups (C vs. BPA); 2 sexes (female (F) vs. male (M)); and 2 time points (0 h vs. 48 h). Before differentiation, 15 genes were differentially expressed between the C and the BPA-exposed preadipocytes within sex. In BPA-F, extracellular matrix remodeling genes cathepsin K and collagen 5α3 were upregulated compared to C-F. At 48 h, BPA-F had 154 genes differentially expressed vs. C-F and BPA-M had 487 genes differentially expressed vs. C-M. Triglyceride and glycerophospholipid metabolism were the most upregulated pathways in BPA-F. Downregulated pathways were associated with extracellular matrix organization in BPA-exposed preadipocytes. These findings are among the first to demonstrate that gestational BPA can modify the fate of adipocyte precursors by altering pathways associated to extracellular matrix components, an often-disregarded, but required aspect of adipogenic differentiation. This work highlights the need to investigate early adipogenic differentiation changes in other obesogenic chemicals.
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Affiliation(s)
- Yong Pu
- Department of Pathology, University of Illinois at Chicago, Chicago, 60612, USA
| | - Elvis Ticiani
- Department of Pathology, University of Illinois at Chicago, Chicago, 60612, USA
| | - Anita A Waye
- Department of Pathology, University of Illinois at Chicago, Chicago, 60612, USA
| | - Kunzhe Dong
- United States Department of Agriculture, Agricultural Research Service, Avian Disease and Oncology Laboratory, East Lansing, 48823, USA
| | - Huanmin Zhang
- United States Department of Agriculture, Agricultural Research Service, Avian Disease and Oncology Laboratory, East Lansing, 48823, USA
| | - Almudena Veiga-Lopez
- Department of Pathology, University of Illinois at Chicago, Chicago, 60612, USA.
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13
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da Cruz Nascimento SS, Carvalho de Queiroz JL, Fernandes de Medeiros A, de França Nunes AC, Piuvezam G, Lima Maciel BL, Souza Passos T, Morais AHDA. Anti-inflammatory agents as modulators of the inflammation in adipose tissue: A systematic review. PLoS One 2022; 17:e0273942. [PMID: 36048868 PMCID: PMC9436134 DOI: 10.1371/journal.pone.0273942] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/18/2022] [Indexed: 12/09/2022] Open
Abstract
Obesity is characterized by an adipose tissue mass expansion that presents a risk to health, associated with a chronic increase in circulating inflammatory mediators. Anti-inflammatory agents are an obesity alternative treatment. However, the lack of effective agents indicates the need to assess the mechanisms and identify effective therapeutic targets. The present work identified and described the mechanisms of action of anti-inflammatory agents in adipose tissue in experimental studies. The review was registered in the International Prospective Registry of Systematic Reviews (PROSPERO-CRD42020182897). The articles' selection was according to eligibility criteria (PICOS). The research was performed in PubMed, ScienceDirect, Scopus, Web of Science, VHL, and EMBASE. The methodological quality evaluation was assessed using SYRCLE. Initially, 1511 articles were selected, and at the end of the assessment, 41 were eligible. Among the anti-inflammatory agent classes, eight drugs, 28 natural, and five synthetic compounds were identified. Many of these anti-inflammatory agents act in metabolic pathways that culminate in the inflammatory cytokines expression reduction, decreasing the macrophages infiltration in white and adipose tissue and promoting the polarization process of type M1 to M2 macrophages. Thus, the article clarifies and systematizes these anti-inflammatory agents' mechanisms in adipose tissue, presenting targets relevant to future research on these pathways.
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Affiliation(s)
| | - Jaluza Luana Carvalho de Queiroz
- Biochemistry and Molecular Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Amanda Fernandes de Medeiros
- Biochemistry and Molecular Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Ana Clara de França Nunes
- Public Health Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal/RN, Brazil
| | - Grasiela Piuvezam
- Public Health Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal/RN, Brazil
- Department of Public Health, Center for Health Sciences, Postgraduate Program in Public Health, Federal University of Rio Grande do Norte, Natal/RN, Brazil
| | - Bruna Leal Lima Maciel
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil
- Department of Nutrition, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Thaís Souza Passos
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil
- Department of Nutrition, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Ana Heloneida de Araújo Morais
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil
- Biochemistry and Molecular Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
- Department of Nutrition, Federal University of Rio Grande do Norte, Natal, RN, Brazil
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14
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Iinuma T, Kiuchi M, Hirahara K, Kurita J, Kokubo K, Yagyu H, Yoneda R, Arai T, Sonobe Y, Fukuyo M, Kaneda A, Yonekura S, Nakayama T, Okamoto Y, Hanazawa T. Single-cell immunoprofiling after immunotherapy for allergic rhinitis reveals functional suppression of pathogenic Th2 cells and clonal conversion. J Allergy Clin Immunol 2022; 150:850-860.e5. [PMID: 35863510 DOI: 10.1016/j.jaci.2022.06.024] [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: 11/05/2021] [Revised: 06/22/2022] [Accepted: 06/29/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Allergic rhinitis is a growing problem worldwide. Currently, the only treatment that can modify the disease is antigen-specific immunotherapy; however, its mechanism(s) of action is not fully understood. OBJECTIVE To comprehensively investigate the role and changes of antigen-specific T cells before and after sublingual immunotherapy (SLIT) for Japanese cedar pollinosis (JCP). METHODS We cultured PBMCs obtained both before and at 1 year after initiating SLIT and used a combination of single-cell RNA sequence and repertoire sequencing. To investigate biomarkers, we used PBMCs from patients participating a phase II/III trial of SLIT tablets for JCP and PBMCs from good and poor responders in outpatients. RESULTS Antigen-stimulated culturing after SLIT led to clonal expansion of Th2 and Treg cells, and most of these CD4+ T cells retained their CDR3 regions before and after treatment, indicating antigen-specific clonal responses and differentiation secondary to SLIT. However, SLIT reduced the number of clonal functional Th2 cells but increased the Trans-type Th2 cell population that expresses musculin (MSC), TGF-β, and IL-2. Trajectory analysis suggested that SLIT induced clonal differentiation of the Trans-type Th2 cells differentiated into Treg cells. Using real-time PCR, we found that the MSC levels increased in the active SLIT group and good responders after 1 year of treatment. CONCLUSION The combination of single-cell RNA sequencing and repertoire analysis helped reveal a part of the underlying mechanism-that SLIT promotes the expression of MSC on pathogenic Th2 cells and suppresses their function; MSC may be a potential biomarker of SLIT for allergic rhinitis.
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Affiliation(s)
- Tomohisa Iinuma
- Department of Otorhinolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masahiro Kiuchi
- Department of Immunology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Kiyoshi Hirahara
- Department of Immunology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Junya Kurita
- Department of Otorhinolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Kota Kokubo
- Department of Immunology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Hiroyuki Yagyu
- Department of Immunology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Riyo Yoneda
- Department of Otorhinolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Tomoyuki Arai
- Department of Otorhinolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yuri Sonobe
- Department of Immunology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masaki Fukuyo
- Department of Molecular Oncology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Atsushi Kaneda
- Department of Molecular Oncology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Syuji Yonekura
- Department of Otorhinolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Toshinori Nakayama
- Department of Immunology, Chiba University Graduate School of Medicine, Chiba, Japan; AMED-CREST, AMED, Chiba, Japan
| | | | - Toyoyuki Hanazawa
- Department of Otorhinolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
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15
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Cervantes O, Talavera IC, Every E, Coler B, Li M, Li A, Li H, Adams Waldorf K. Role of hormones in the pregnancy and sex-specific outcomes to infections with respiratory viruses. Immunol Rev 2022; 308:123-148. [PMID: 35373371 PMCID: PMC9189035 DOI: 10.1111/imr.13078] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 01/13/2023]
Abstract
Pregnant women infected with pathogenic respiratory viruses, such as influenza A viruses (IAV) and coronaviruses, are at higher risk for mortality, hospitalization, preterm birth, and stillbirth. Several factors are likely to contribute to the susceptibility of pregnant individuals to severe lung disease including changes in pulmonary physiology, immune defenses, and effector functions of some immune cells. Pregnancy is also a physiologic state characterized by higher levels of multiple hormones that may impact the effector functions of immune cells, such as progesterone, estrogen, human chorionic gonadotropin, prolactin, and relaxin. Each of these hormones acts to support a tolerogenic immune state of pregnancy, which helps prevent fetal rejection, but may also contribute to an impaired antiviral response. In this review, we address the unique role of adaptive and innate immune cells in the control of pathogenic respiratory viruses and how pregnancy and specific hormones can impact their effector actions. We highlight viruses with sex-specific differences in infection outcomes and why pregnancy hormones may contribute to fetal protection but aid the virus at the expense of the mother's health.
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Affiliation(s)
- Orlando Cervantes
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Irene Cruz Talavera
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Emma Every
- University of Washington School of Medicine, Spokane, Washington, United States of America
| | - Brahm Coler
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Elson S. Floyd College of Medicine, Washington State University, Spokane, Washington, United States of America
| | - Miranda Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Department of Biological Sciences, Columbia University, New York City, New York, United States of America
| | - Amanda Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Case Western Reserve, Cleveland, Ohio, United States of America
| | - Hanning Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Kristina Adams Waldorf
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
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16
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Bechmann N, Barthel A, Schedl A, Herzig S, Varga Z, Gebhard C, Mayr M, Hantel C, Beuschlein F, Wolfrum C, Perakakis N, Poston L, Andoniadou CL, Siow R, Gainetdinov RR, Dotan A, Shoenfeld Y, Mingrone G, Bornstein SR. Sexual dimorphism in COVID-19: potential clinical and public health implications. Lancet Diabetes Endocrinol 2022; 10:221-230. [PMID: 35114136 PMCID: PMC8803381 DOI: 10.1016/s2213-8587(21)00346-6] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/16/2021] [Accepted: 12/03/2021] [Indexed: 01/19/2023]
Abstract
Current evidence suggests that severity and mortality of COVID-19 is higher in men than in women, whereas women might be at increased risk of COVID-19 reinfection and development of long COVID. Differences between sexes have been observed in other infectious diseases and in the response to vaccines. Sex-specific expression patterns of proteins mediating virus binding and entry, and divergent reactions of the immune and endocrine system, in particular the hypothalamic-pituitary-adrenal axis, in response to acute stress might explain the higher severity of COVID-19 in men. In this Personal View, we discuss how sex hormones, comorbidities, and the sex chromosome complement influence these mechanisms in the context of COVID-19. Due to its role in the severity and progression of SARS-CoV-2 infections, we argue that sexual dimorphism has potential implications for disease treatment, public health measures, and follow-up of patients predisposed to the development of long COVID. We suggest that sex differences could be considered in future pandemic surveillance and treatment of patients with COVID-19 to help to achieve better disease stratification and improved outcomes.
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Affiliation(s)
- Nicole Bechmann
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Andreas Barthel
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Medicover Bochum, Bochum, Germany
| | - Andreas Schedl
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Université Côte d'Azur, INSERM, CNRS, iBV, Nice, France
| | - Stephan Herzig
- Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Joint Heidelberg-IDC Translational Diabetes Program Inner Medicine I, Neuherberg, Germany
| | - Zsuzsanna Varga
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Catherine Gebhard
- Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland; Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Manuel Mayr
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine and Sciences, King's College London, London, UK
| | - Constanze Hantel
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), Zurich, Switzerland
| | - Felix Beuschlein
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), Zurich, Switzerland; Department for Endocrinology, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-University, Munich, Germany
| | - Christian Wolfrum
- Institute of Food, Nutrition and Health, ETH Zürich, Schwerzenbach, Switzerland
| | - Nikolaos Perakakis
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Lucilla Poston
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Cynthia L Andoniadou
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Centre for Craniofacial and Regenerative Biology, Faculty of Dental, Oral, and Craniofacial Sciences, King's College London, London, UK
| | - Richard Siow
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine and Sciences, King's College London, London, UK; Vascular Biology and Inflammation Section, School of Cardiovascular Medicine and Sciences, King's College London, London, UK
| | - Raul R Gainetdinov
- Institute of Translational Biomedicine and St Petersburg University Hospital, St Petersburg State University, St Petersburg, Russia
| | - Arad Dotan
- The Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Ramat Gan, Israel
| | - Yehuda Shoenfeld
- The Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Ramat Gan, Israel; Ariel University, Ariel, Israel
| | - Geltrude Mingrone
- Department of Diabetes, School of Life Course Science and Medicine, King's College London, London, UK; Fondazione Policlinico Universitario Agostino Gemelli Istituto Di Ricovero e Cura a Carattere Scientifico, Rome, Italy; Department of Internal Medicine, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Stefan R Bornstein
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Department of Diabetes, School of Life Course Science and Medicine, King's College London, London, UK.
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17
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Abstract
Despite numerous studies of immune sexual dimorphism, sexual differences are not rigorously mapped and dimorphic mechanisms are incompletely understood. Current immune research typically studies sex differences in specific cells, tissues, or diseases but without providing an integrated picture. To connect the dots, we suggest comprehensive research approaches to better our understanding of immune sexual dimorphism and its mechanisms.
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Affiliation(s)
- Shani Talia Gal-Oz
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tal Shay
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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18
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SantaCruz-Calvo S, Bharath L, Pugh G, SantaCruz-Calvo L, Lenin RR, Lutshumba J, Liu R, Bachstetter AD, Zhu B, Nikolajczyk BS. Adaptive immune cells shape obesity-associated type 2 diabetes mellitus and less prominent comorbidities. Nat Rev Endocrinol 2022; 18:23-42. [PMID: 34703027 PMCID: PMC11005058 DOI: 10.1038/s41574-021-00575-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/17/2021] [Indexed: 02/07/2023]
Abstract
Obesity and type 2 diabetes mellitus (T2DM) are increasing in prevalence owing to decreases in physical activity levels and a shift to diets that include addictive and/or high-calorie foods. These changes are associated with the adoption of modern lifestyles and the presence of an obesogenic environment, which have resulted in alterations to metabolism, adaptive immunity and endocrine regulation. The size and quality of adipose tissue depots in obesity, including the adipose tissue immune compartment, are critical determinants of overall health. In obesity, chronic low-grade inflammation can occur in adipose tissue that can progress to systemic inflammation; this inflammation contributes to the development of insulin resistance, T2DM and other comorbidities. An improved understanding of adaptive immune cell dysregulation that occurs during obesity and its associated metabolic comorbidities, with an appreciation of sex differences, will be critical for repurposing or developing immunomodulatory therapies to treat obesity and/or T2DM-associated inflammation. This Review critically discusses how activation and metabolic reprogramming of lymphocytes, that is, T cells and B cells, triggers the onset, development and progression of obesity and T2DM. We also consider the role of immunity in under-appreciated comorbidities of obesity and/or T2DM, such as oral cavity inflammation, neuroinflammation in Alzheimer disease and gut microbiome dysbiosis. Finally, we discuss previous clinical trials of anti-inflammatory medications in T2DM and consider the path forward.
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Affiliation(s)
- Sara SantaCruz-Calvo
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA.
| | - Leena Bharath
- Department of Nutrition and Public Health, Merrimack College, North Andover, MA, USA
| | - Gabriella Pugh
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY, USA
| | - Lucia SantaCruz-Calvo
- Department of Chemistry and Food Technology, Technical University of Madrid, Madrid, Spain
| | - Raji Rajesh Lenin
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Jenny Lutshumba
- Department of Neuroscience, University of Kentucky, Lexington, KY, USA
| | - Rui Liu
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA
| | | | - Beibei Zhu
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA.
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19
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Sex-Based Differences in the Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1329:499-533. [PMID: 34664253 DOI: 10.1007/978-3-030-73119-9_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Cancers are heterogeneous multifactorial diseases consisting of a major public health issue worldwide. Sex disparities are evidenced in cancer incidence, mortality, expression of prognosis factor, response to treatment, and survival. For both sexes, an interplay of intrinsic and environmental factors influences cancer cells and tumor microenvironment (TME) components. The TME cumulates both supportive and communicative functions, contributing to cancer development, progression, and metastasis dissemination. The frontline topics of this chapter are focused on the contribution of sex, via steroid hormones, such as estrogens and androgens, on the following components of the TME: cancer-associated fibroblasts (CAFs), extracellular matrix (ECM), blood and lymphatic endothelial cells, and immunity/inflammatory system.
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20
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Sharpe MA, Baskin DS, Jenson AV, Baskin AM. Hijacking Sexual Immuno-Privilege in GBM-An Immuno-Evasion Strategy. Int J Mol Sci 2021; 22:10983. [PMID: 34681642 PMCID: PMC8536168 DOI: 10.3390/ijms222010983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/28/2021] [Accepted: 10/05/2021] [Indexed: 01/12/2023] Open
Abstract
Regulatory T-cells (Tregs) are immunosuppressive T-cells, which arrest immune responses to 'Self' tissues. Some immunosuppressive Tregs that recognize seminal epitopes suppress immune responses to the proteins in semen, in both men and women. We postulated that GBMs express reproductive-associated proteins to manipulate reproductive Tregs and to gain immune privilege. We analyzed four GBM transcriptome databases representing ≈900 tumors for hypoxia-responsive Tregs, steroidogenic pathways, and sperm/testicular and placenta-specific genes, stratifying tumors by expression. In silico analysis suggested that the presence of reproductive-associated Tregs in GBM tumors was associated with worse patient outcomes. These tumors have an androgenic signature, express male-specific antigens, and attract reproductive-associated Related Orphan Receptor C (RORC)-Treg immunosuppressive cells. GBM patient sera were interrogated for the presence of anti-sperm/testicular antibodies, along with age-matched controls, utilizing monkey testicle sections. GBM patient serum contained anti-sperm/testicular antibodies at levels > six-fold that of controls. Myeloid-derived suppressor cells (MDSCs) and tumor-associated macrophages (TAMs) are associated with estrogenic tumors which appear to mimic placental tissue. We demonstrate that RORC-Tregs drive poor patient outcome, and Treg infiltration correlates strongly with androgen levels. Androgens support GBM expression of sperm/testicular proteins allowing Tregs from the patient's reproductive system to infiltrate the tumor. In contrast, estrogen appears responsible for MDSC/TAM immunosuppression.
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MESH Headings
- Androgens/metabolism
- Brain Neoplasms/immunology
- Brain Neoplasms/mortality
- Brain Neoplasms/pathology
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Databases, Factual
- Estrogens/metabolism
- Female
- Glioblastoma/immunology
- Glioblastoma/mortality
- Glioblastoma/pathology
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Kaplan-Meier Estimate
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Male
- Microglia/immunology
- Microglia/metabolism
- Nuclear Receptor Subfamily 1, Group F, Member 3/genetics
- Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Tumor Microenvironment
- Tumor-Associated Macrophages/immunology
- Tumor-Associated Macrophages/metabolism
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Affiliation(s)
- Martyn A. Sharpe
- Kenneth R. Peak Brain and Pituitary Tumor Treatment Center, Department of Neurosurgery, Houston Methodist Neurological Institute, Houston Methodist Hospital and Research Institute, Houston, TX 77030, USA; (D.S.B.); (A.V.J.); (A.M.B.)
| | - David S. Baskin
- Kenneth R. Peak Brain and Pituitary Tumor Treatment Center, Department of Neurosurgery, Houston Methodist Neurological Institute, Houston Methodist Hospital and Research Institute, Houston, TX 77030, USA; (D.S.B.); (A.V.J.); (A.M.B.)
- Department of Neurological Surgery, Weill Cornell Medical College, New York, NY 10065, USA
| | - Amanda V. Jenson
- Kenneth R. Peak Brain and Pituitary Tumor Treatment Center, Department of Neurosurgery, Houston Methodist Neurological Institute, Houston Methodist Hospital and Research Institute, Houston, TX 77030, USA; (D.S.B.); (A.V.J.); (A.M.B.)
| | - Alexandra M. Baskin
- Kenneth R. Peak Brain and Pituitary Tumor Treatment Center, Department of Neurosurgery, Houston Methodist Neurological Institute, Houston Methodist Hospital and Research Institute, Houston, TX 77030, USA; (D.S.B.); (A.V.J.); (A.M.B.)
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21
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Thomas AL, Alarcon PC, Divanovic S, Chougnet CA, Hildeman DA, Moreno-Fernandez ME. Implications of Inflammatory States on Dysfunctional Immune Responses in Aging and Obesity. FRONTIERS IN AGING 2021; 2:732414. [PMID: 35822048 PMCID: PMC9261339 DOI: 10.3389/fragi.2021.732414] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/25/2021] [Indexed: 12/16/2022]
Abstract
Aging and obesity are two conditions characterized by chronic, low-grade inflammation. While both conditions are also associated with dysfunctional immune responses, the shared and distinct underlying mechanisms are just starting to be uncovered. In fact, recent findings have suggested that the effects of obesity on the immune system can be thought of as a state of accelerated aging. Here we propose that chronic, low-grade inflammation seen in obesity and aging is complex, affects multiple cell types, and results in an altered basal immune state. In aging, part of this altered state is the emergence of regulatory immune populations that lead to further immune dysfunction in an attempt to reduce chronic inflammation. While in obesity, part of the altered state is the effect of expanding adipose tissue on immune cell function. Thus, in this review, we compare, and contrast altered immune states in aging and obesity and discuss their potential contribution to a shared clinical problem- decreased vaccine responsiveness.
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Affiliation(s)
- Alyssa L. Thomas
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Immunology Graduate Program and Medical Scientist Training Program, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Pablo C. Alarcon
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Immunology Graduate Program and Medical Scientist Training Program, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Medical Scientist Training Program, Cincinnati Children’s Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Senad Divanovic
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Immunology Graduate Program and Medical Scientist Training Program, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Medical Scientist Training Program, Cincinnati Children’s Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Claire A. Chougnet
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Immunology Graduate Program and Medical Scientist Training Program, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - David A. Hildeman
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Immunology Graduate Program and Medical Scientist Training Program, Cincinnati Children's Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Medical Scientist Training Program, Cincinnati Children’s Hospital Medical Center and The University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Center for Transplant Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Maria E. Moreno-Fernandez
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
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22
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Abstract
The FOXP3+CD4+ regulatory T (Treg) cells located in non-lymphoid tissues differ in phenotype and function from their lymphoid organ counterparts. Tissue Treg cells have distinct transcriptomes, T cell receptor repertoires and growth and survival factor dependencies that arm them to survive and operate in their home tissue. Their functions extend beyond immune surveillance to tissue homeostasis, including regulation of local and systemic metabolism, promotion of tissue repair and regeneration, and control of the proliferation, differentiation and fate of non-lymphoid cell progenitors. Treg cells in diverse tissues share a common FOXP3+CD4+ precursor located within lymphoid organs. This precursor undergoes definitive specialization once in the home tissue, following a multilayered array of common and tissue-distinct transcriptional programmes. Our deepening knowledge of tissue Treg cell biology will inform ongoing attempts to harness Treg cells for precision immunotherapeutics.
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23
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Stojić-Vukanić Z, Pilipović I, Arsenović-Ranin N, Dimitrijević M, Leposavić G. Sex-specific remodeling of T-cell compartment with aging: Implications for rat susceptibility to central nervous system autoimmune diseases. Immunol Lett 2021; 239:42-59. [PMID: 34418487 DOI: 10.1016/j.imlet.2021.08.003] [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: 02/08/2021] [Revised: 06/12/2021] [Accepted: 08/12/2021] [Indexed: 11/15/2022]
Abstract
The incidence of multiple sclerosis (MS) and susceptibility of animals to experimental autoimmune encephalomyelitis (EAE), the most commonly used experimental model of MS, decrease with aging. Generally, autoimmune diseases develop as the ultimate outcome of an imbalance between damaging immune responses against self and regulatory immune responses (keeping the former under control). Thus, in this review the age-related changes possibly underlying this balance were discussed. Specifically, considering the central role of T cells in MS/EAE, the impact of aging on overall functional capacity (reflecting both overall count and individual functional cell properties) of self-reactive conventional T cells (Tcons) and FoxP3+ regulatory T cells (Tregs), as the most potent immunoregulatory/suppressive cells, was analyzed, as well. The analysis encompasses three distinct compartments: thymus (the primary lymphoid organ responsible for the elimination of self-reactive T cells - negative selection and the generation of Tregs, compensating for imperfections of the negative selection), peripheral blood/lymphoid tissues ("afferent" compartment), and brain/spinal cord tissues ("target" compartment). Given that the incidence of MS and susceptibility of animals to EAE are greater in women/females than in age-matched men/males, sex as independent variable was also considered. In conclusion, with aging, sex-specific alterations in the balance of self-reactive Tcons/Tregs are likely to occur not only in the thymus/"afferent" compartment, but also in the "target" compartment, reflecting multifaceted changes in both T-cell types. Their in depth understanding is important not only for envisaging effects of aging, but also for designing interventions to slow-down aging without any adverse effect on incidence of autoimmune diseases.
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Affiliation(s)
- Zorica Stojić-Vukanić
- Department of Microbiology and Immunology, University of Belgrade - Faculty of Pharmacy, Belgrade, Serbia
| | - Ivan Pilipović
- Immunology Research Centre "Branislav Janković", Institute of Virology, Vaccines and Sera "Torlak", Belgrade, Serbia
| | - Nevena Arsenović-Ranin
- Department of Microbiology and Immunology, University of Belgrade - Faculty of Pharmacy, Belgrade, Serbia
| | - Mirjana Dimitrijević
- Department of Immunology, University of Belgrade - Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, Belgrade, Serbia
| | - Gordana Leposavić
- Department of Pathobiology, University of Belgrade - Faculty of Pharmacy, Belgrade, Serbia.
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24
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Tanaka T, Wada T, Uno K, Ogihara S, Ie H, Okekawa A, Ishikawa A, Ito T, Miyazawa Y, Sameshima A, Onogi Y, Tsuneki H, Sasahara M, Nakashima A, Saito S, Sasaoka T. Oestrogen receptor α in T cells controls the T cell immune profile and glucose metabolism in mouse models of gestational diabetes mellitus. Diabetologia 2021; 64:1660-1673. [PMID: 33796910 DOI: 10.1007/s00125-021-05447-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 02/08/2021] [Indexed: 12/16/2022]
Abstract
AIMS/HYPOTHESIS The imbalance between maternal insulin resistance and a relative lack of insulin secretion underlies the pathogenesis of gestational diabetes mellitus (GDM). Alterations in T cell subtypes and increased levels of circulating proinflammatory cytokines have been proposed as potential mechanisms underlying the pathophysiology of insulin resistance in GDM. Since oestrogen modulates T cell immunity, we hypothesised that oestrogen plays a homeostatic role in visceral adipose tissue by coordinating T cell immunity through oestrogen receptor α (ERα) in T cells to prevent GDM. METHODS Female CD4-cre ERαfl/fl (KO) mice on a C57BL/6 background with ERα ablation specifically in T cells, and ERαfl/fl (ERα-floxed [FL]) mice were fed 60 kJ% high-fat diet (HFD) for 4 weeks. Female mice mated with male BALB/c mice to achieve allogenic pregnancy and were maintained on an HFD to generate the GDM model. Mice were divided into four experimental groups: non-pregnant FL, non-pregnant KO, pregnant FL (FL-GDM) and pregnant KO (KO-GDM). GTTs and ITTs were performed on day 12.5 or 13.5 and 16.5 after breeding, respectively. On day 18.5 after breeding, mice were killed and T cell subsets in the gonadal white adipose tissue (gWAT) and spleen were analysed using flow cytometry. Histological examination was also conducted and proinflammatory gene expression in gWAT and the liver was evaluated. RESULTS KO mice that mated with BALB/c mice showed normal fertility rates and fetal weights as compared with FL mice. Body and tissue weights were similar between FL and KO mice. When compared with FL-GDM mice, KO-GDM mice showed decreased insulin secretion (serum insulin concentration 15 min after glucose loading: 137.3 ± 18.3 pmol/l and 40.1 ± 36.5 pmol/l, respectively; p < 0.05), impaired glucose tolerance (glucose AUC in GTT: 2308.3 ± 54.0 mmol/l × min and 2620.9 ± 122.1 mmol/l × min, respectively; p < 0.05) and increased numbers of T helper (Th)17 cells in gWAT (0.4 ± 0.0% vs 0.8 ± 0.1%; p < 0.05). However, the contents of Th1 and regulatory T cells (Tregs) in gWAT remained similar between FL-GDM and KO-GDM. Glucose-stimulated insulin secretion was similar between isolated islets derived from FL and KO mice, but was reduced by IL-17A treatment. Moreover, the levels of proinflammatory gene expression, including expression of Emr1 and Tnfa in gWAT, were significantly higher in KO-GDM mice than in FL-GDM mice (5.1-fold and 2.7-fold, respectively; p < 0.01 for both). Furthermore, KO-GDM mice showed increased expression of genes encoding hepatokines, Ahsg and Fgf21 (both were 2.4-fold higher vs FL-GDM mice; p < 0.05 and p = 0.09, respectively), with no changes in inflammatory gene expression (e.g., Tnfa and Ifng) in the liver compared with FL-GDM mice. CONCLUSIONS/INTERPRETATION Deletion of ERα in T cells caused impaired maternal adaptation of insulin secretion, changes in hepatokine profiles, and enhanced chronic inflammation in gWAT alongside an abnormal increase in Th17 cells. These results suggest that the ERα-mediated oestrogen signalling effects in T cells regulate T cell immunity and contribute to glucose homeostasis in pregnancy.
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Affiliation(s)
- Tomoko Tanaka
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Tsutomu Wada
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan.
| | - Kimie Uno
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Saki Ogihara
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Hiromi Ie
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Akira Okekawa
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Akari Ishikawa
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Tetsuo Ito
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Yuichiro Miyazawa
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Azusa Sameshima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Yasuhiro Onogi
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | - Hiroshi Tsuneki
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
| | | | - Akitoshi Nakashima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Toshiyasu Sasaoka
- Department of Clinical Pharmacology, University of Toyama, Toyama, Japan
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25
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Moreno-Fernandez ME, Sharma V, Stankiewicz TE, Oates JR, Doll JR, Damen MSMA, Almanan MATA, Chougnet CA, Hildeman DA, Divanovic S. Aging mitigates the severity of obesity-associated metabolic sequelae in a gender independent manner. Nutr Diabetes 2021; 11:15. [PMID: 34099626 PMCID: PMC8184786 DOI: 10.1038/s41387-021-00157-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Understanding gender-associated bias in aging and obesity-driven metabolic derangements has been hindered by the inability to model severe obesity in female mice. METHODS Here, using chow- or high fat diet (HFD)-feeding regimens at standard (TS) and thermoneutral (TN) housing temperatures, the latter to model obesity in female mice, we examined the impact of gender and aging on obesity-associated metabolic derangements and immune responsiveness. Analysis included quantification of: (i) weight gain and adiposity; (ii) the development and severity of glucose dysmetabolism and non-alcoholic fatty liver disease (NAFLD); and (iii) induction of inflammatory pathways related to metabolic dysfunction. RESULTS We show that under chow diet feeding regimen, aging was accompanied by increased body weight and white adipose tissue (WAT) expansion in a gender independent manner. HFD feeding regimen in aged, compared to young, male mice at TS, resulted in attenuated glucose dysmetabolism and hepatic steatosis. However, under TS housing conditions only aged, but not young, HFD fed female mice developed obesity. At TN however, both young and aged HFD fed female mice developed severe obesity. Independent of gender or housing conditions, aging attenuated the severity of metabolic derangements in HFD-fed obese mice. Tempered severity of metabolic derangements in aged mice was associated with increased splenic frequency of regulatory T (Treg) cells, Type I regulatory (Tr1)-like cells and circulating IL-10 levels and decreased vigor of HFD-driven induction of inflammatory pathways in adipose and liver tissues. CONCLUSION Our findings suggest that aging-associated altered immunological profile and inflammatory vigor may play a dominant role in the attenuation of obesogenic diet-driven metabolic dysfunction.
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Affiliation(s)
- Maria E Moreno-Fernandez
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Vishakha Sharma
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - Traci E Stankiewicz
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Jarren R Oates
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - Jessica R Doll
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Michelle S M A Damen
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Maha A T A Almanan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - Claire A Chougnet
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - David A Hildeman
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Center for Transplant Immunology, and Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center Cincinnati, Ohio, 45229, USA
| | - Senad Divanovic
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA.
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA.
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA.
- Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, 45229, USA.
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26
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Abstract
PURPOSE OF REVIEW Pediatric obese asthma is a complex disease that remains poorly understood. The increasing worldwide incidence of both asthma and obesity over the last few decades, their current high prevalence and the challenges in treating obese asthmatic patients all highlight the importance of a better understanding of the pathophysiological mechanisms in obese asthma. While it is well established that patients with obesity are at an increased risk of developing asthma, the mechanisms by which obesity drives the onset of asthma, and modifies existing asthma, remain unclear. Here, we will focus on mechanisms by which obesity alters immune function in asthma. RECENT FINDINGS Lung parenchyma has an altered structure in some pediatric obese asthmatics, known as dysanapsis. Central adiposity is linked to reduced pulmonary function and a better predictor of asthma risk in children than BMI. Obesity in young children is associated with an increased risk of developing asthma, as well as early puberty, and hormonal alterations are implicated in obese asthma. Obesity and asthma each yield immunometabolic dysregulation separately and we are learning more about alterations in these pathways in pediatric obese asthma and the potential impact of bariatric surgery on those processes. SUMMARY The recent progress in clarifying the connections between childhood obesity and asthma and their combined impacts on immune function moves us closer to the goals of improved understanding of the pathophysiological mechanisms underpinning obese asthma and improved therapeutic target selection. However, this common inflammatory disease remains understudied, especially in children, and much remains to be learned.
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Affiliation(s)
- Ceire Hay
- Children’s Hospital of Philadelphia, Department of Pediatrics, Division of Allergy Immunology, Philadelphia, PA
| | - Sarah E. Henrickson
- Children’s Hospital of Philadelphia, Department of Pediatrics, Division of Allergy Immunology, Philadelphia, PA
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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27
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Le Garf S, Sibille B, Mothe-Satney I, Eininger C, Fauque P, Murdaca J, Chinetti G, Neels JG, Rousseau AS. Alpha-lipoic acid supplementation increases the efficacy of exercise- and diet-induced obesity treatment and induces immunometabolic changes in female mice and women. FASEB J 2021; 35:e21312. [PMID: 33742689 DOI: 10.1096/fj.202001817rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 01/29/2023]
Abstract
The decrease in the regulatory T cells (Tregs) population is highly involved in adipose tissue inflammation and insulin resistance in obesity. Tregs depend on fatty acids via β-oxidation for immunosuppressive function adapting their antioxidant systems to allow survival to oxidative stress. In this study, we have hypothesized that a dietary supplementation with alpha-lipoic acid (ALA), a powerful antioxidant, would improve immunometabolism when added to the classical strategy of obesity treatment. First, we showed by in vitro experiments that ALA favors the polarization of mice CD4 + T cells toward Tregs. Next, we have carried out a translational study where female obese mice and women were supplemented with ALA or vehicle/placebo (mice: 2.5 gALA /kgfood ; 6 weeks; women: 600 mgALA /day, 8 weeks) while following a protocol including regular exercise and a change in diet. Fatty acid oxidation potential and activity of nuclear erythroid-related factor 2 (NRF2) of mouse secondary lymphoid tissues were improved by ALA supplementation. ALA reduced visceral adipose tissue (VAT) mass and preserved Tregs in VAT in mice. In women, ALA supplementation induced significant metabolic changes of circulating CD4 + T cells including increased oxidative capacity and fatty acid oxidation, ameliorated their redox status, and improved the reduction of visceral fat mass. While appropriate biological markers are still required to be used in clinics to judge the effectiveness of long-term obesity treatment, further studies in female mice and women are needed to determine whether these immunometabolic changes would reduce VAT mass-associated risk for secondary health issues arising from obesity.
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Affiliation(s)
| | | | | | | | | | | | | | - Jaap G Neels
- INSERM, C3M, Université Côte d'Azur, Nice, France
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28
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Watanabe E, Wada T, Okekawa A, Kitamura F, Komatsu G, Onogi Y, Yamamoto S, Sasahara M, Kitada M, Koya D, Tsuneki H, Sasaoka T. Stromal cell-derived factor 1 (SDF1) attenuates platelet-derived growth factor-B (PDGF-B)-induced vascular remodeling for adipose tissue expansion in obesity. Angiogenesis 2020; 23:667-684. [PMID: 32699964 DOI: 10.1007/s10456-020-09738-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/10/2020] [Indexed: 12/13/2022]
Abstract
Platelet-derived growth factor-B (PDGF-B) is a main factor to promote adipose tissue angiogenesis, which is responsible for the tissue expansion in obesity. In this process, PDGF-B induces the dissociation of pericytes from blood vessels; however, its regulatory mechanism remains unclear. In the present study, we found that stromal cell-derived factor 1 (SDF1) plays an essential role in this regulatory mechanism. SDF1 mRNA was increased in epididymal white adipose tissue (eWAT) of obese mice. Ex vivo pharmacological analyses using cultured adipose tissue demonstrated that physiological concentrations (1-100 pg/mL) of SDF1 inhibited the PDGF-B-induced pericyte dissociation from vessels via two cognate SDF1 receptors, CXCR4 and CXCR7. In contrast, higher concentrations (> 1 ng/mL) of SDF1 alone caused the dissociation of pericytes via CXCR4, and this effect disappeared in the cultured tissues from PDGF receptor β (PDGFRβ) knockout mice. To investigate the role of SDF1 in angiogenesis in vivo, the effects of anagliptin, an inhibitor of dipeptidyl peptidase 4 (DPP4) that degrades SDF1, were examined in mice fed a high-fat diet. Anagliptin increased the SDF1 levels in the serum and eWAT. These changes were associated with a reduction of pericyte dissociation and fat accumulation in eWAT. AMD3100, a CXCR4 antagonist, cancelled these anagliptin effects. In flow-cytometry analysis, anagliptin increased and decreased the PDGF-B expression in endothelial cells and macrophages, respectively, whereas anagliptin reduced the PDGFRβ expression in pericytes of eWAT. These results suggest that SDF1 negatively regulates the adipose tissue angiogenesis in obesity by altering the reactivity of pericytes to PDGF-B.
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Affiliation(s)
- Eri Watanabe
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Tsutomu Wada
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
| | - Akira Okekawa
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Fuka Kitamura
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Go Komatsu
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Yasuhiro Onogi
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Seiji Yamamoto
- Department of Pathology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Masakiyo Sasahara
- Department of Pathology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Munehiro Kitada
- Department of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Daisuke Koya
- Department of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Hiroshi Tsuneki
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Toshiyasu Sasaoka
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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