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Bournot L, Payet T, Sicard F, Breniere T, Astier J, Roux J, Bariohay B, Landrier JF. Aging alone or combined with obesity increases white adipose tissue inflammatory status in male mice. Sci Rep 2024; 14:16268. [PMID: 39009694 PMCID: PMC11251036 DOI: 10.1038/s41598-024-67179-3] [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: 01/23/2024] [Accepted: 07/09/2024] [Indexed: 07/17/2024] Open
Abstract
White adipose tissue (WAT) has been recognized as a fundamental and crucial organ of interest in research focusing on inflammation during obesity or aging. WAT is also proposed as a significant component of cholecalciferol and 25-hydroxyvitamin D (25(OH)D) storage, which participates in the decrease of 25(OH)D plasma levels reported during aging and obesity. In the present study, we evaluated WAT and plasma cholecalciferol and 25(OH)D content together with inflammatory status to highlight the putative relationship between vitamin D status and inflammatory process during aging alone or combined with obesity. Circulating cholecalciferol and 25(OH)D and the stored quantity of cholecalciferol and 25(OH)D in WAT were quantified in young and old mice fed a control or obesogenic diet. The inflammation was assessed by measuring plasma inflammatory cytokines, mRNA, and microRNAs inflammatory-associated in WAT. The combination of aging and obesity decreased 25(OH)D plasma levels but did not modify circulating inflammatory markers. A cumulative effect of aging and obesity was observed in WAT, with rising mRNA inflammatory cytokines, notably Ccl5 and Tnf. Interestingly, aging and obesity-associated were also characterized by increased inflammatory microRNA expression. The inflammatory parameters in WAT were negatively correlated with the plasma 25(OH)D but positively correlated with the quantity of cholecalciferol and 25(OH)D in WAT. These results support the cumulative effect of obesity and aging in aggravation of WAT inflammation and suggest that accumulation of cholecalciferol and 25(OH)D in WAT could constitute a mechanism to counteract WAT inflammation during aging and obesity.
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Affiliation(s)
- Lorrine Bournot
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000, Marseille, France
- Biomeostasis, 13070, La Penne Sur Huveaune, France
| | - Thomas Payet
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000, Marseille, France
| | - Flavie Sicard
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000, Marseille, France
- PhenoMARS, CriBiom, Marseille, France
| | - Thomas Breniere
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000, Marseille, France
| | - Julien Astier
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000, Marseille, France
| | - Julien Roux
- Biomeostasis, 13070, La Penne Sur Huveaune, France
| | | | - Jean-François Landrier
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000, Marseille, France.
- PhenoMARS, CriBiom, Marseille, France.
- C2VN, UMR 1260 INRAE/1263 INSERM/Aix Marseille Université, 27 Bd Jean Moulin, 13385, Marseille Cedex 05, France.
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Insights from a high-fat diet fed mouse model with a humanized liver. PLoS One 2022; 17:e0268260. [PMID: 35533183 PMCID: PMC9084523 DOI: 10.1371/journal.pone.0268260] [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] [Received: 11/12/2021] [Accepted: 04/25/2022] [Indexed: 11/19/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disorder worldwide and is increasing at an alarming rate. NAFLD is strongly associated with obesity and insulin resistance. The use of animal models remains a vital aspect for investigating the molecular mechanisms contributing to metabolic dysregulation and facilitating novel drug target identification. However, some differences exist between mouse and human hepatocyte physiology. Recently, chimeric mice with human liver have been generated, representing a step forward in the development of animal models relevant to human disease. Here we explored the feasibility of using one of these models (cDNA-uPA/SCID) to recapitulate obesity, insulin resistance and NAFLD upon feeding a Western-style diet. Furthermore, given the importance of a proper control diet, we first evaluated whether there are differences between feeding a purified ingredient control diet that matches the composition of the high-fat diet and feeding a grain-based chow diet. We show that mice fed chow have a higher food intake and fed glucose levels than mice that received a low-fat purified ingredient diet, suggesting that the last one represents a better control diet. Upon feeding a high-fat or matched ingredient control diet for 12 weeks, cDNA-uPA/SCID chimeric mice developed extensive macrovesicular steatosis, a feature previously associated with reduced growth hormone action. However, mice were resistant to diet-induced obesity and remained glucose tolerant. Genetic background is fundamental for the development of obesity and insulin resistance. Our data suggests that using a background that favors the development of these traits, such as C57BL/6, may be necessary to establish a humanized mouse model of NAFLD exhibiting the metabolic dysfunction associated with obesity.
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Tang S, Zhang Z, Oakley RH, Li W, He W, Xu X, Ji M, Xu Q, Chen L, Wellman AS, Li Q, Li L, Li JL, Li X, Cidlowski JA, Li X. Intestinal epithelial glucocorticoid receptor promotes chronic inflammation-associated colorectal cancer. JCI Insight 2021; 6:151815. [PMID: 34784298 PMCID: PMC8783679 DOI: 10.1172/jci.insight.151815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 11/11/2021] [Indexed: 11/17/2022] Open
Abstract
Synthetic immunosuppressive glucocorticoids (GCs) are widely used to control inflammatory bowel disease (IBD). However, the impact of GC signaling on intestinal tumorigenesis remains controversial. Here, we report that intestinal epithelial GC receptor (GR), but not whole intestinal tissue GR, promoted chronic intestinal inflammation-associated colorectal cancer in both humans and mice. In patients with colorectal cancer, GR was enriched in intestinal epithelial cells and high epithelial cell GR levels were associated with poor prognosis. Consistently, intestinal epithelium–specific deletion of GR (GR iKO) in mice increased macrophage infiltration, improved tissue recovery, and enhanced antitumor response in a chronic inflammation–associated colorectal cancer model. Consequently, GR iKO mice developed fewer and less advanced tumors than control mice. Furthermore, oral GC administration in the early phase of tissue injury delayed recovery and accelerated the formation of aggressive colorectal cancers. Our study reveals that intestinal epithelial GR signaling repressed acute colitis but promoted chronic inflammation–associated colorectal cancer. Our study suggests that colorectal epithelial GR could serve as a predictive marker for colorectal cancer risk and prognosis. Our findings further suggest that, although synthetic GC treatment for IBD should be used with caution, there is a therapeutic window for GC therapy during colorectal cancer development in immunocompetent patients.
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Affiliation(s)
- Shuang Tang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Zhan Zhang
- Central for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
| | | | - Wenling Li
- Biostatistics and Computational Biology Branch, NIEHS/NIH, Research Triangle Park, United States of America
| | - Weijing He
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xiaojiang Xu
- Integrated Bioinformatics, NIEHS/NIH, Research Triangle Park, United States of America
| | - Ming Ji
- Signal Transduction Laboratory, NIEHS/NIH, Research Triangle Park, United States of America
| | - Qing Xu
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, United States of America
| | - Liang Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Alicia S Wellman
- Signal Transduction Laboratory, NIEHS/NIH, Research Triangle Park, United States of America
| | - Qingguo Li
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Leping Li
- Biostatistics and Computational Biology Branch, NIEHS/NIH, Research Triangle Park, United States of America
| | - Jian-Liang Li
- NIEHS/NIH, Research Triangle Park, United States of America
| | - Xinxiang Li
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - John A Cidlowski
- Signal Transduction Laboratory, NIEHS/NIH, Research Triangle Park, United States of America
| | - Xiaoling Li
- Signal Transduction Laboratory, NIEHS/NIH, Research Triangle Park, United States of America
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4
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Mallu ACT, Vasudevan M, Allanki S, Nathan AA, Ravi MM, Ramanathan GS, Pradeepa R, Mohan V, Dixit M. Prediabetes uncovers differential gene expression at fasting and in response to oral glucose load in immune cells. Clin Nutr 2020; 40:1247-1259. [PMID: 32863060 DOI: 10.1016/j.clnu.2020.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 01/04/2023]
Abstract
BACKGROUND AND OBJECTIVE Metabolic disorders including diabetes are associated with immune cell dysfunction. However, the effect of normal glucose metabolism or impairment thereof on immune cell gene expression is not well known. Hence, in this cross-sectional pilot study, we sought to determine the differences in gene expression in the peripheral blood mono-nuclear cells (PBMCs) of normal glucose tolerant (NGT) and prediabetic (PD) Asian Indian men, at fasting and in response to 75 g oral glucose load. METHODS Illumina HT12 bead chip-based microarray was performed on PBMCs at fasting and 2-h post load conditions for NGT (N = 6) and PD (N = 9) subjects. Following normalization and due quality control of the raw data, differentially expressed genes (DEGs) under different conditions within and across the two groups were identified using GeneSpring GX V12.0 software. Paired and unpaired Student's t-tests were applied along with fold change cut-offs for appropriate comparisons. Validation of the microarray data was carried out through real-time qPCR analysis. Significantly regulated biological pathways were analyzed by employing DEGs and DAVID resource. Deconvolution of the DEGs between NGT and PD subjects at fasting was performed using CIBERSORT and genes involved in regulatory T-cell (Treg) function were further analyzed for biological significance. RESULTS Glucose load specifically altered the expression of 112 genes in NGT and 356 genes in PD subjects. Biological significance analysis revealed transient up-regulation of innate and adaptive immune response related genes following oral glucose load in NGT individuals, which was not observed in PD subjects. Instead, in the PD group, glucose load led to an increase in the expression of pro-atherogenic and anti-angiogenic genes. Comparison of gene expression at fasting state in PD versus NGT revealed 21,707 differentially expressed genes. Biological significance analysis of the immune function related genes between these two groups (at fasting) revealed higher gene expression of members of the TLR signaling, MHC class II molecules, and T-cell receptor, chemotaxis and adhesion pathways in PD subjects. Expression of interferon-γ (IFN-γ) and TNFα was higher and that of type-1 interferons and TGF-β was lower at fasting state in PD subjects compared to NGT. Additionally, expression of multiple proteasome subunits and protein arginine methyl transferase genes (PRMTs) were higher and that of Treg specific genes was significantly distinct at fasting in PD subjects compared to NGT. CONCLUSION Prediabetes uncovers constitutive TLR activation, enhanced IFN-γ signaling, and Treg dysfunction at fasting along with altered gene expression response to oral glucose load.
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Affiliation(s)
- Abhiram Charan Tej Mallu
- Laboratory of Vascular Biology, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | | | - Srinivas Allanki
- Laboratory of Vascular Biology, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - Abel Arul Nathan
- Laboratory of Vascular Biology, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - Mahalakshmi M Ravi
- Institute Hospital, Indian Institute of Technology Madras, Chennai, India
| | | | - Rajendra Pradeepa
- Department of Diabetology, Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialties Centre, Chennai, India
| | - Viswanathan Mohan
- Department of Diabetology, Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialties Centre, Chennai, India
| | - Madhulika Dixit
- Laboratory of Vascular Biology, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India.
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Ramos CA, Ouyang C, Qi Y, Chung Y, Cheng CT, LaBarge MA, Seewaldt VL, Ann DK. A Non-canonical Function of BMAL1 Metabolically Limits Obesity-Promoted Triple-Negative Breast Cancer. iScience 2020; 23:100839. [PMID: 32058954 PMCID: PMC6997869 DOI: 10.1016/j.isci.2020.100839] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/03/2019] [Accepted: 01/09/2020] [Indexed: 01/01/2023] Open
Abstract
The epidemiological association between disrupted circadian rhythms and metabolic diseases is implicated in increased risk of human breast cancer and poor therapeutic outcomes. To define a metabolic phenotype and the underlying molecular mechanism, we applied chronic insulin treatment (CIT) to an in vitro model of triple-negative breast cancer to directly address how BMAL1, a key circadian transcription factor, regulates cancer cell respiration and governs tumor progression. At the cellular level, BMAL1 suppresses the flexibility of mitochondrial substrate usage and the pyruvate-dependent mitochondrial respiration induced by CIT. We established an animal model of diet-induced obesity/hyperinsulinemia and observed that BMAL1 functions as a tumor suppressor in obese, but not lean, mice. Downregulation of BMAL1 is associated with higher risk of metastasis in human breast tumors. In summary, loss of BMAL1 in tumors confers advantages to cancer cells in both intrinsic mitochondrial metabolism and extrinsic inflammatory tumor microenvironment during pre-diabetic obesity/hyperinsulinemia. Circadian regulator BMAL1 rewires metabolism in a chronic insulin-treated TNBC model Pyruvate links BMAL1 to mitochondrial bioenergetics BMAL1 suppresses tumor proliferation and metastasis in hyperinsulinemic obese mice BMAL1 influences tumor microenvironment in high-fat-diet-fed mice
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Affiliation(s)
- Cassandra A Ramos
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Irell & Manella Graduate School of Biological Sciences, City of Hope, Duarte, CA 91010, USA
| | - Ching Ouyang
- Center for Informatics, City of Hope National Medical Center, Duarte, CA 91010, USA; Department of Computational and Quantitative Medicine, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Yue Qi
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Yiyin Chung
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Chun-Ting Cheng
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Mark A LaBarge
- Irell & Manella Graduate School of Biological Sciences, City of Hope, Duarte, CA 91010, USA; Department of Population Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - Victoria L Seewaldt
- Irell & Manella Graduate School of Biological Sciences, City of Hope, Duarte, CA 91010, USA; Department of Population Sciences, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
| | - David K Ann
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA; Irell & Manella Graduate School of Biological Sciences, City of Hope, Duarte, CA 91010, USA.
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6
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Taylor LE, Ramirez LA, Musall JB, Sullivan JC. Tipping the scales: Are females more at risk for obesity- and high-fat diet-induced hypertension and vascular dysfunction? Br J Pharmacol 2019; 176:4226-4242. [PMID: 31271650 DOI: 10.1111/bph.14783] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 06/04/2019] [Accepted: 06/08/2019] [Indexed: 12/17/2022] Open
Abstract
Obesity is a common metabolic disorder that has become a widespread epidemic in several countries. Sex and gender disparities in the prevalence of cardiovascular disease (CVD) have been well documented with premenopausal women having a lower incidence of CVD than age-matched men. However, women are more likely than men to suffer from obesity, which can predispose them to a greater risk of CVD. The mechanisms underlying high-fat diet (HFD)- or obesity-induced hypertension are not well defined, although immune system activation and inflammation have been implicated in several studies. Further, the sex of the subject can have a profound influence on the immune response to hypertensive stimuli. Therefore, the purpose of this review is to examine the effects of sex and gender on the role of the immune system in HFD-induced hypertension and vascular dysfunction. LINKED ARTICLES: This article is part of a themed section on The Importance of Sex Differences in Pharmacology Research. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.21/issuetoc.
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Affiliation(s)
- Lia E Taylor
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Lindsey A Ramirez
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Jacqueline B Musall
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Jennifer C Sullivan
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
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7
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Tucci J, Alhushki W, Chen T, Sheng X, Kim YM, Mittelman SD. Switch to low-fat diet improves outcome of acute lymphoblastic leukemia in obese mice. Cancer Metab 2018; 6:15. [PMID: 30410754 PMCID: PMC6211598 DOI: 10.1186/s40170-018-0189-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/28/2018] [Indexed: 12/13/2022] Open
Abstract
Background It is becoming increasingly recognized that weight and nutritional status can impact cancer survival. We have previously shown that obese mice with syngeneic acute lymphoblastic leukemia (ALL) have poorer response to chemotherapy treatment than control mice. We therefore investigated whether dietary intervention could improve outcome from the most common pediatric cancer, ALL. Methods Diet-induced obese (DIO) mice raised on a 60% calories from fat diet and control mice were implanted with syngeneic ALL cells. Some DIO mice were switched to the low-fat control diet. Survival from ALL was assessed without or with chemotherapy treatment starting at the time of the diet switch. Cells from DIO mice before and after diet switch were assessed by FACS for BrdU incorporation and phosphorylation status of AKT, S6K, and EIF2a. Similar experiments were done with human ALL xenografts. Mouse and human ALL cells were cultured in media with 10% or 5% fetal bovine serum, and sensitivity to chemotherapies assessed. Results DIO mice had poorer survival (17%) after vincristine monotherapy than control mice on a 10% low fat diet (42%; n = 12/group; p = 0.09, log rank). However, switching obese mice to the low-fat diet prior to initiation of vincristine led to dramatically improved survival (92%, p < 0.01 vs both other groups). In vitro, FBS restriction made murine and human ALL cells more sensitive to vincristine. Interestingly, while serum restriction enhanced ALL sensitivity to dexamethasone and l-asparaginase, dietary switch did not improve survival of DIO mice treated with either drug in monotherapy. Thus, it appears that dietary intervention has a unique effect to improve ALL cell sensitivity to vincristine in vivo. Conclusions We report herein that a dietary intervention can improve ALL outcome in a preclinical model. Further work is needed to identify the mechanisms of this effect and investigate potential impact on human leukemia in patients. Electronic supplementary material The online version of this article (10.1186/s40170-018-0189-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jonathan Tucci
- 1Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Waseem Alhushki
- 2Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Present Address: Cure 4 The Kids Foundation, Las Vegas, NV USA
| | - Ting Chen
- 4Division of Pediatric Endocrinology, UCLA Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, 10833 Le Conte Ave, Los Angeles, CA 90095-1752 USA
| | - Xia Sheng
- 1Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Present Address: Aptose Biosciences, San Diego, CA USA
| | - Yong-Mi Kim
- 2Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Steven D Mittelman
- 1Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,4Division of Pediatric Endocrinology, UCLA Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, 10833 Le Conte Ave, Los Angeles, CA 90095-1752 USA
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Celià-Terrassa T, Liu DD, Choudhury A, Hang X, Wei Y, Zamalloa J, Alfaro-Aco R, Chakrabarti R, Jiang YZ, Koh BI, Smith HA, DeCoste C, Li JJ, Shao ZM, Kang Y. Normal and cancerous mammary stem cells evade interferon-induced constraint through the miR-199a-LCOR axis. Nat Cell Biol 2017; 19:711-723. [PMID: 28530657 PMCID: PMC5481166 DOI: 10.1038/ncb3533] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 04/18/2017] [Indexed: 12/18/2022]
Abstract
Tumor-initiating cells (TICs), or cancer stem cells (CSC), possess stem cell-like properties observed in normal adult tissue stem cells. Normal and cancerous stem cells may therefore share regulatory mechanisms for maintaining self-renewing capacity and resisting differentiation elicited by cell-intrinsic or microenvironmental cues. Here, we show that miR-199a promotes stem cell properties in mammary stem cells (MaSCs) and breast CSCs by directly repressing nuclear receptor corepressor LCOR, which primes interferon (IFN) responses. Elevated miR-199a expression in stem cell-enriched populations protects normal and malignant stem-like cells from differentiation and senescence induced by IFNs that are produced by epithelial and immune cells in the mammary gland. Importantly, the miR-199a-LCOR-IFN axis is activated in poorly differentiated ER− breast tumors, functionally promotes tumor initiation and metastasis, and is associated with poor clinical outcome. Our study therefore reveals a common mechanism shared by normal and malignant stem cells to protect them from suppressive immune cytokine signaling.
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Affiliation(s)
- Toni Celià-Terrassa
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Daniel D Liu
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Abrar Choudhury
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Xiang Hang
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Yong Wei
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Jose Zamalloa
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA.,Lewis-Sigler Institute, Princeton University, Princeton, New Jersey 08544, USA
| | - Raymundo Alfaro-Aco
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Rumela Chakrabarti
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Yi-Zhou Jiang
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Bong Ihn Koh
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Heath A Smith
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Christina DeCoste
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Jun-Jing Li
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Zhi-Ming Shao
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
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9
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Maugham ML, Thomas PB, Crisp GJ, Philp LK, Shah ET, Herington AC, Chen C, Gregory LS, Nelson CC, Seim I, Jeffery PL, Chopin LK. Insights from engraftable immunodeficient mouse models of hyperinsulinaemia. Sci Rep 2017; 7:491. [PMID: 28352127 PMCID: PMC5428450 DOI: 10.1038/s41598-017-00443-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 02/27/2017] [Indexed: 12/11/2022] Open
Abstract
Hyperinsulinaemia, obesity and dyslipidaemia are independent and collective risk factors for many cancers. Here, the long-term effects of a 23% Western high-fat diet (HFD) in two immunodeficient mouse strains (NOD/SCID and Rag1 -/-) suitable for engraftment with human-derived tissue xenografts, and the effect of diet-induced hyperinsulinaemia on human prostate cancer cell line xenograft growth, were investigated. Rag1 -/-and NOD/SCID HFD-fed mice demonstrated diet-induced impairments in glucose tolerance at 16 and 23 weeks post weaning. Rag1 -/- mice developed significantly higher fasting insulin levels (2.16 ± 1.01 ng/ml, P = 0.01) and increased insulin resistance (6.70 ± 1.68 HOMA-IR, P = 0.01) compared to low-fat chow-fed mice (0.71 ± 0.12 ng/ml and 2.91 ± 0.42 HOMA-IR). This was not observed in the NOD/SCID strain. Hepatic steatosis was more extensive in Rag1 -/- HFD-fed mice compared to NOD/SCID mice. Intramyocellular lipid storage was increased in Rag1 -/- HFD-fed mice, but not in NOD/SCID mice. In Rag1 -/- HFD-fed mice, LNCaP xenograft tumours grew more rapidly compared to low-fat chow-fed mice. This is the first characterisation of the metabolic effects of long-term Western HFD in two mouse strains suitable for xenograft studies. We conclude that Rag1 -/- mice are an appropriate and novel xenograft model for studying the relationship between cancer and hyperinsulinaemia.
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Affiliation(s)
- Michelle L Maugham
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- Skeletal Biology and Forensic Anthropology Research Laboratory, Cancer Program, School of Biomedical Sciences, Translational Research Institute (TRI), Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Patrick B Thomas
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Gabrielle J Crisp
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Lisa K Philp
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
| | - Esha T Shah
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Adrian C Herington
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
| | - Chen Chen
- School of Biomedical Sciences, University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - Laura S Gregory
- Skeletal Biology and Forensic Anthropology Research Laboratory, Cancer Program, School of Biomedical Sciences, Translational Research Institute (TRI), Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Colleen C Nelson
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
| | - Inge Seim
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Penny L Jeffery
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia.
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.
| | - Lisa K Chopin
- Ghrelin Research Group, Translational Research Institute, Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, Australia.
- Comparative and Endocrine Biology Laboratory, Translational Research Institute, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.
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10
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Sinha I, Sakthivel D, Varon DE. Systemic Regulators of Skeletal Muscle Regeneration in Obesity. Front Endocrinol (Lausanne) 2017; 8:29. [PMID: 28261159 PMCID: PMC5311070 DOI: 10.3389/fendo.2017.00029] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 02/01/2017] [Indexed: 12/19/2022] Open
Abstract
Skeletal muscle maintenance is a dynamic process and undergoes constant repair and regeneration. However, skeletal muscle regenerative capacity declines in obesity. In this review, we focus on obesity-associated changes in inflammation, metabolism, and impaired insulin signaling, which are pathologically dysregulated and ultimately result in a loss of muscle mass and function. In addition, we examine the relationships between skeletal muscle, liver, and visceral adipose tissue in an obese state.
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Affiliation(s)
- Indranil Sinha
- Division of Plastic Surgery, Brigham and Women’s Hospital, Boston, MA, USA
- *Correspondence: Indranil Sinha,
| | | | - David E. Varon
- Division of Plastic Surgery, Brigham and Women’s Hospital, Boston, MA, USA
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11
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Yang D, Yang W, Tian Z, van Velkinburgh JC, Song J, Wu Y, Ni B. Innate lymphoid cells as novel regulators of obesity and its-associated metabolic dysfunction. Obes Rev 2016; 17:485-98. [PMID: 26948388 DOI: 10.1111/obr.12397] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/08/2016] [Accepted: 02/08/2016] [Indexed: 12/14/2022]
Abstract
The increased prevalence of obesity worldwide has been accompanied by increases in risk and rates of obesity-associated metabolic dysfunctions, such as insulin resistance. The chronic, low-grade inflammatory condition of obesity highlights the pathophysiological link between the immune system and the metabolic system, which has yet to be fully understood. Recent studies of obesity have started to uncover potential regulatory roles for the innate lymphoid cells (ILCs), which under normal conditions serve to regulate development of lymphoid tissue and function of the mucosal immune system. The ILCs are a newly identified immune cell population with complicated composition and subsequently diverse and dynamic functions. Studies to determine the distribution profile of the various ILCs in adipose tissue provide intriguing clues as to their regulatory capacity in obesity and its associated metabolic dysfunctions. Here, we review the recent findings supporting a role for ILCs as regulators of obesity or its associated insulin resistance, and discuss the potential underlying molecular mechanism as well as its promise as a therapeutic target for clinical applications. © 2016 World Obesity.
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Affiliation(s)
- D Yang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - W Yang
- Department of Dermatology, 181st Hospital of PLA, Guilin, China
| | - Z Tian
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - J C van Velkinburgh
- van Velkinburgh Initiative for Collaboratory BioMedical Research, Santa Fe, NM, USA
| | - J Song
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Y Wu
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - B Ni
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
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12
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Min SY, Kady J, Nam M, Rojas-Rodriguez R, Berkenwald A, Kim JH, Noh HL, Kim JK, Cooper MP, Fitzgibbons T, Brehm MA, Corvera S. Human 'brite/beige' adipocytes develop from capillary networks, and their implantation improves metabolic homeostasis in mice. Nat Med 2016; 22:312-8. [PMID: 26808348 PMCID: PMC4777633 DOI: 10.1038/nm.4031] [Citation(s) in RCA: 226] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 12/14/2015] [Indexed: 12/15/2022]
Abstract
Uncoupling protein 1 (UCP1) is highly expressed in brown adipose tissue, where it generates heat by uncoupling electron transport from ATP production. UCP1 is also found outside classical brown adipose tissue depots, in adipocytes that are termed 'brite' (brown-in-white) or 'beige'. In humans, the presence of brite or beige (brite/beige) adipocytes is correlated with a lean, metabolically healthy phenotype, but whether a causal relationship exists is not clear. Here we report that human brite/beige adipocyte progenitors proliferate in response to pro-angiogenic factors, in association with expanding capillary networks. Adipocytes formed from these progenitors transform in response to adenylate cyclase activation from being UCP1 negative to being UCP1 positive, which is a defining feature of the beige/brite phenotype, while displaying uncoupled respiration. When implanted into normal chow-fed, or into high-fat diet (HFD)-fed, glucose-intolerant NOD-scid IL2rg(null) (NSG) mice, brite/beige adipocytes activated in vitro enhance systemic glucose tolerance. These adipocytes express neuroendocrine and secreted factors, including the pro-protein convertase PCSK1, which is strongly associated with human obesity. Pro-angiogenic conditions therefore drive the proliferation of human beige/brite adipocyte progenitors, and activated beige/brite adipocytes can affect systemic glucose homeostasis, potentially through a neuroendocrine mechanism.
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Affiliation(s)
- So Yun Min
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
- Graduate School of Biomedical Sciences, University of Massachusetts Medical School, Worcester, MA
| | - Jamie Kady
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
- Diabetes Center of Excellence, University of Massachusetts Medical School, Worcester, MA
| | - Minwoo Nam
- Graduate School of Biomedical Sciences, University of Massachusetts Medical School, Worcester, MA
- Cardiovascular Center of Excellence, University of Massachusetts Medical School, Worcester, MA
| | - Raziel Rojas-Rodriguez
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
- Graduate School of Biomedical Sciences, University of Massachusetts Medical School, Worcester, MA
| | - Aaron Berkenwald
- Clinical Translational Research Pathway, University of Massachusetts Medical School, Worcester, MA
| | - Jong Hun Kim
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Hye-Lim Noh
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Jason K. Kim
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Marcus P. Cooper
- Cardiovascular Center of Excellence, University of Massachusetts Medical School, Worcester, MA
| | - Timothy Fitzgibbons
- Cardiovascular Center of Excellence, University of Massachusetts Medical School, Worcester, MA
| | - Michael A. Brehm
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
- Diabetes Center of Excellence, University of Massachusetts Medical School, Worcester, MA
| | - Silvia Corvera
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA
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13
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Majdoubi A, Kishta OA, Thibodeau J. Role of antigen presentation in the production of pro-inflammatory cytokines in obese adipose tissue. Cytokine 2016; 82:112-21. [PMID: 26854212 DOI: 10.1016/j.cyto.2016.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 01/27/2016] [Accepted: 01/27/2016] [Indexed: 02/06/2023]
Abstract
Type II diabetes regroups different physiological anomalies that ultimately lead to low-grade chronic inflammation, insulin resistance and loss of pancreatic β-cells. Obesity is one of the best examples of such a condition that can develop into Metabolic Syndrome, causing serious health problems of great socio-economic consequences. The pathological outcome of obesity has a genetic basis and depends on the delicate balance between pro- and anti-inflammatory effectors of the immune system. The causal link between obesity and inflammation is well established. While innate immunity plays a key role in the development of a pro-inflammatory state in obese adipose tissues, it has now become clear that adaptive immune cells are also involved and participate in the cascade of events that lead to metabolic perturbations. The efficacy of some immunotherapeutic protocols in reducing the symptoms of obesity-driven metabolic syndrome in mice implicated all arms of the immune response. Recently, the production of pathogenic immunoglobulins and pro-inflammatory cytokines by B and T lymphocytes suggested an auto-immune basis for the establishment of a non-healthy obese state. Understanding the cellular landscape of obese adipose tissues and how immune cells sustain chronic inflammation holds the key to the development of targeted therapies. In this review, we emphasize the role of antigen-presenting cells and MHC molecules in obese adipose tissue and the general contribution of the adaptive arm of the immune system in inflammation-induced insulin resistance.
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Affiliation(s)
- Abdelilah Majdoubi
- Laboratoire d'Immunologie Moléculaire, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Québec, Canada
| | - Osama A Kishta
- Laboratoire d'Immunologie Moléculaire, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Québec, Canada
| | - Jacques Thibodeau
- Laboratoire d'Immunologie Moléculaire, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Québec, Canada.
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14
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Goh J, Goh KP, Abbasi A. Exercise and Adipose Tissue Macrophages: New Frontiers in Obesity Research? Front Endocrinol (Lausanne) 2016; 7:65. [PMID: 27379017 PMCID: PMC4905950 DOI: 10.3389/fendo.2016.00065] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 06/01/2016] [Indexed: 01/13/2023] Open
Abstract
Obesity is a major public health problem in the twenty-first century. Mutations in genes that regulate substrate metabolism, subsequent dysfunction in their protein products, and other factors, such as increased adipose tissue inflammation, are some underlying etiologies of this disease. Increased inflammation in the adipose tissue microenvironment is partly mediated by the presence of cells from the innate and adaptive immune system. A subset of the innate immune population in adipose tissue include macrophages, termed adipose tissue macrophages (ATMs), which are central players in adipose tissue inflammation. Being extremely plastic, their responses to diverse molecular signals in the microenvironment dictate their identity and functional properties, where they become either pro-inflammatory (M1) or anti-inflammatory (M2). Endurance exercise training exerts global anti-inflammatory responses in multiple organs, including skeletal muscle, liver, and adipose tissue. The purpose of this review is to discuss the different mechanisms that drive ATM-mediated inflammation in obesity and present current evidence of how exercise training, specifically endurance exercise training, modulates the polarization of ATMs from an M1 to an M2 anti-inflammatory phenotype.
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Affiliation(s)
- Jorming Goh
- Combat Protection and Performance Program, DSO National Laboratories, Defence Medical and Environmental Research Institute, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- *Correspondence: Jorming Goh,
| | - Kian Peng Goh
- Division of Endocrinology, Department of Medicine, Khoo Teck Puat Hospital, Singapore
| | - Asghar Abbasi
- Institute for Memory Impairments and Neurological Disorders (MIND Institute), University of California Irvine, Irvine, CA, USA
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15
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Friedline RH, Ko HJ, Jung DY, Lee Y, Bortell R, Dagdeviren S, Patel PR, Hu X, Inashima K, Kearns C, Tsitsilianos N, Shafiq U, Shultz LD, Lee KW, Greiner DL, Kim JK. Genetic ablation of lymphocytes and cytokine signaling in nonobese diabetic mice prevents diet-induced obesity and insulin resistance. FASEB J 2015; 30:1328-38. [PMID: 26644351 DOI: 10.1096/fj.15-280610] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/23/2015] [Indexed: 01/13/2023]
Abstract
Obesity is characterized by a dysregulated immune system, which may causally associate with insulin resistance and type 2 diabetes. Despite widespread use of nonobese diabetic (NOD) mice, NOD with severe combined immunodeficiency (scid) mutation (SCID) mice, and SCID bearing a null mutation in the IL-2 common γ chain receptor (NSG) mice as animal models of human diseases including type 1 diabetes, the underlying metabolic effects of a genetically altered immune system are poorly understood. For this, we performed a comprehensive metabolic characterization of these mice fed chow or after 6 wk of a high-fat diet. We found that NOD mice had ∼50% less fat mass and were 2-fold more insulin sensitive, as measured by hyperinsulinemic-euglycemic clamp, than C57BL/6 wild-type mice. SCID mice were also more insulin sensitive with increased muscle glucose metabolism and resistant to diet-induced obesity due to increased energy expenditure (∼10%) and physical activity (∼40%) as measured by metabolic cages. NSG mice were completely protected from diet-induced obesity and insulin resistance with significant increases in glucose metabolism in peripheral organs. Our findings demonstrate an important role of genetic background, lymphocytes, and cytokine signaling in diet-induced obesity and insulin resistance.
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Affiliation(s)
- Randall H Friedline
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Hwi Jin Ko
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Dae Young Jung
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Yongjin Lee
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Rita Bortell
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Sezin Dagdeviren
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Payal R Patel
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Xiaodi Hu
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Kunikazu Inashima
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Caitlyn Kearns
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Nicholas Tsitsilianos
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Umber Shafiq
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Leonard D Shultz
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Ki Won Lee
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Dale L Greiner
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Jason K Kim
- *Program in Molecular Medicine, Diabetes Center of Excellence, and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA; The Jackson Laboratory, Bar Harbor, Maine, USA; and World Class University Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
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16
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Interrelationship between lymphocytes and leptin in fat depots of obese mice revealed by changes in nutritional status. J Physiol Biochem 2015; 71:497-507. [PMID: 25670497 DOI: 10.1007/s13105-015-0388-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 01/28/2015] [Indexed: 01/17/2023]
Abstract
The mechanisms underlying the relationships between nutritional status and immunity remain to be fully characterized. The present study was undertaken to analyze by flow cytometry, in the context of diet-induced obesity, the status of immune cells in subcutaneous, and epididymal fat depots in wild-type and immunodeficient Rag2-/- mice submitted to nutritional challenge, i.e., 48-h fasting and 1-week refeeding. In parallel, the responsiveness of mature adipocytes and immune cells in bone marrow, lymph node, and liver were also analyzed. The results show that fasting in obese wild-type mice induces a prominent lipolysis in epididymal AT and immunosuppression restricted to both subcutaneous and epididymal AT, characterized by reduced number of CD4+ T and B lymphocytes and M1/M2 macrophages associated with reduced leptin and increased FGF21 expression in mature adipocytes. One-week refeeding was sufficient to reverse the fasting-induced effects. Obese immunodeficient mice under nutritional challenge exhibited no changes in adipocyte leptin expression and no marked trafficking of AT macrophages or NK cells, while the fasted-induced upregulation of FGF21 expression was maintained as well as the lipolytic responses. The present results demonstrate that, in a context of diet-induced obesity, fasting-induced immunosuppression is restricted to fat depots in immunocompetent mice. Lack of adipocyte leptin regulation and fasting-induced immunosuppression in obese immunodeficient mice strongly suggests that lymphocytes are involved in the modulation of adipocyte leptin expression on one hand and on the other that leptin is involved in the immune changes in AT according to nutritional status.
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17
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Abstract
Obesity-associated insulin resistance, a common precursor of type 2 diabetes, is characterized by chronic inflammation of tissues, including visceral adipose tissue (VAT). Here we show that B-1a cells, a subpopulation of B lymphocytes, are novel and important regulators of this process. B-1a cells are reduced in frequency in obese high-fat diet (HFD)-fed mice, and EGFP interleukin-10 (IL-10) reporter mice show marked reductions in anti-inflammatory IL-10 production by B cells in vivo during obesity. In VAT, B-1a cells are the dominant producers of B cell-derived IL-10, contributing nearly half of the expressed IL-10 in vivo. Adoptive transfer of B-1a cells into HFD-fed B cell-deficient mice rapidly improves insulin resistance and glucose tolerance through IL-10 and polyclonal IgM-dependent mechanisms, whereas transfer of B-2 cells worsens metabolic disease. Genetic knockdown of B cell-activating factor (BAFF) in HFD-fed mice or treatment with a B-2 cell-depleting, B-1a cell-sparing anti-BAFF antibody attenuates insulin resistance. These findings establish B-1a cells as a new class of immune regulators that maintain metabolic homeostasis and suggest manipulation of these cells as a potential therapy for insulin resistance.
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Affiliation(s)
- Lei Shen
- Shanghai Institute of Immunology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Michael N Alonso
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Robert Yuan
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Daniel A Winer
- Division of Cellular & Molecular Biology, Diabetes Research Group, Toronto General Research Institute (TGRI), University Health Network, Toronto, Ontario, Canada
| | - Edgar G Engleman
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
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