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Martins VD, Vaz L, Barbosa SC, Paixão PHDM, Torres L, de Oliveira MFA, Oliveira MDA, Vieira LQ, de Faria AMC, Maioli TU. Obesity alters the macrophages' response to Leishmania major in C57BL/6 mice. J Leukoc Biol 2024:qiae171. [PMID: 39213305 DOI: 10.1093/jleuko/qiae171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 06/12/2024] [Indexed: 09/04/2024] Open
Abstract
Obesity is a global pandemic associated with several comorbidities, such as cardiovascular diseases and type 2 diabetes. It is also a predisposing factor for infectious diseases, increasing mortality rates. Moreover, diet-induced obesity can cause metabolic fluctuations that affect macrophage differentiation in various organs. In this sense, we investigated how bone marrow-derived macrophages and tissue-resident macrophages in the skin, which have been differentiated in a host with metabolic syndrome and with previous inflammatory burden, respond to Leishmania major infection. Our findings suggest that bone marrow-derived macrophages from obese C57BL/6 mice, even when cultivated in vitro with inflammatory stimuli, are more susceptible to L. major. These macrophages produce less tumor necrosing factor (TNF) and nitric oxide (NO) and show higher arginase activity. Furthermore, obese mice infected with an intermediate dose of L. major in the skin had more severe lesions when analyzed for ulceration, diameter, thickness, and parasite burden. The increase in lesion severity in obese mice was associated with a higher frequency of tissue-resident macrophages, which are less efficient in killing parasites. We also used CCR2-/- mice, which predominantly have tissue-resident macrophages, and found that lesion resolution was delayed in association with CCR2 deficiency. Additionally, obesity potentiated tissue damage, resulting in higher frequency of tissue-resident macrophages. Our results demonstrate that obesity can alter macrophage responses to infection, leading to increased susceptibility to L. major and more severe cutaneous leishmaniasis. These findings may have important implications for managing obesity-related infections and the development of new therapies for cutaneous leishmaniasis.
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Affiliation(s)
- Vinicius Dantas Martins
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Leonardo Vaz
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Sara Candida Barbosa
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Pierre Henrique de Menezes Paixão
- Postgraduate Program in Pathology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Licia Torres
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
- Postgraduate Program in Nutrition and Health, School of Nursing, Universidade Federal de Minas Gerais, Avenida Alfredo Balena, 190, CEP 30130-100, Belo Horizonte, Brazil
| | - Marcos Felipe Andrade de Oliveira
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Mariana de Almeida Oliveira
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Leda Quercia Vieira
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Ana Maria Caetano de Faria
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
| | - Tatiani Uceli Maioli
- Postgraduate Program in Biochemistry and Immunology, Biological Sciences Institution, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, CEP 31270-672, Belo Horizonte, Brazil
- Postgraduate Program in Nutrition and Health, School of Nursing, Universidade Federal de Minas Gerais, Avenida Alfredo Balena, 190, CEP 30130-100, Belo Horizonte, Brazil
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Torstensson S, Ascani A, Risal S, Lu H, Zhao A, Espinosa A, Lindgren E, Johansson MH, Eriksson G, Barakat M, Karlsson MC, Svensson C, Benrick A, Stener‐Victorin E. Androgens Modulate the Immune Profile in a Mouse Model of Polycystic Ovary Syndrome. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401772. [PMID: 38767114 PMCID: PMC11267352 DOI: 10.1002/advs.202401772] [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: 02/19/2024] [Revised: 04/30/2024] [Indexed: 05/22/2024]
Abstract
Polycystic ovary syndrome (PCOS) is associated with a low-grade inflammation, but it is unknown how hyperandrogenism, the hallmark of PCOS, affects the immune system. Using a PCOS-like mouse model, it is demonstrated that hyperandrogenism affects immune cell populations in reproductive, metabolic, and immunological tissues differently in a site-specific manner. Co-treatment with an androgen receptor antagonist prevents most of these alterations, demonstrating that these effects are mediated through androgen receptor activation. Dihydrotestosterone (DHT)-exposed mice displayed a drastically reduced eosinophil population in the uterus and visceral adipose tissue (VAT). A higher frequency of natural killer (NK) cells and elevated levels of IFN-γ and TNF-α are seen in uteri of androgen-exposed mice, while NK cells in VAT and spleen displayed a higher expression level of CD69, a marker of activation or tissue residency. Distinct alterations of macrophages in the uterus, ovaries, and VAT are also found in DHT-exposed mice and can potentially be linked to PCOS-like traits of the model. Indeed, androgen-exposed mice are insulin-resistant, albeit unaltered fat mass. Collectively, it is demonstrated that hyperandrogenism causes tissue-specific alterations of immune cells in reproductive organs and VAT, which can have considerable implications on tissue function and contribute to the reduced fertility and metabolic comorbidities associated with PCOS.
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Affiliation(s)
- Sara Torstensson
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Angelo Ascani
- Department of Internal MedicineMedical University of GrazAuenbruggerplaz 15Graz8036Austria
| | - Sanjiv Risal
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Haojiang Lu
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Allan Zhao
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Alexander Espinosa
- Department of MedicineKarolinska InstitutetK2 Reuma Wahren‐Herlenius MStockholm171 77Sweden
| | - Eva Lindgren
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Maria H. Johansson
- Department of MicrobiologyTumor and Cell BiologyKarolinska InstitutetStockholm171 77Sweden
| | - Gustaw Eriksson
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Maya Barakat
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Mikael C.I. Karlsson
- Department of MicrobiologyTumor and Cell BiologyKarolinska InstitutetStockholm171 77Sweden
| | - Camilla Svensson
- Department of Physiology and PharmacologyKarolinska InstitutetStockholm171 77Sweden
| | - Anna Benrick
- Department of PhysiologyInstitute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgBox 432Gothenburg40530Sweden
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3
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Poynter ME, Mank MM, Ather JL. Obesity-associated inflammatory macrophage polarization is inhibited by capsaicin and phytolignans. Am J Physiol Regul Integr Comp Physiol 2024; 326:R370-R382. [PMID: 38436058 DOI: 10.1152/ajpregu.00161.2023] [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: 06/29/2023] [Revised: 02/25/2024] [Accepted: 02/25/2024] [Indexed: 03/05/2024]
Abstract
Obesity is often accompanied by increased adipose tissue inflammation, a process that is partially driven by adipose tissue-resident macrophages. In this study, we explored the potential for plant-derived dietary compounds to exert anti-inflammatory effects in macrophages that alleviate obesity-associated adipocyte dysfunction. Capsaicin (CAP), schisandrin A (SA), enterodiol (END), and enterolactone (ENL) treatment polarized J774 macrophages to an "M2" or anti-inflammatory phenotype and inhibited responses to stimulation with lipopolysaccharide (LPS). Furthermore, these compounds blocked inflammasome activation when administered just before ATP-induced NLRP3 activation, as evidenced by the abrogation of IL-1β release in mouse macrophages and human peripheral blood monocytes. The addition of CAP, SA, or ENL during the differentiation of bone marrow-derived macrophages was also sufficient to inhibit LPS-induced IL-6 and TNFα production. Finally, CAP, END, and ENL treatment during differentiation of 3T3-L1 adipocytes induced an adiponectin-high phenotype accompanied by increases in thermogenic gene expression, and conditioned media from these adipocytes inhibited LPS-induced production of IL-1β, IL-6, and TNFα from J774 macrophages. These polarizing effects were partially mediated by the elevated adiponectin and decreased syndecan-4 in the adipocyte-conditioned media. These results implicate the contribution of plant-derived dietary components to the modulation of macrophages and adipocytes in obesity.NEW & NOTEWORTHY The utility of food-based products to prevent or alleviate chronic conditions such as obesity and its associated comorbidities is an attractive approach. Capsaicin, schisandrin A, enterodiol, and enterolactone, phytochemicals present in traditional medicinal food, decreased proinflammatory cytokine production from macrophages that, in turn, reduced obesity-associated adipocyte dysfunction. These results implicate the contribution of plant-derived dietary components to the modulation of macrophages and adipocytes in obesity.
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Affiliation(s)
- Matthew E Poynter
- Department of Medicine, The University of Vermont, Burlington, Vermont, United States
- The Vermont Lung Center, The University of Vermont, Burlington, Vermont, United States
| | - Madeleine M Mank
- Department of Medicine, The University of Vermont, Burlington, Vermont, United States
- The Vermont Lung Center, The University of Vermont, Burlington, Vermont, United States
| | - Jennifer L Ather
- Department of Medicine, The University of Vermont, Burlington, Vermont, United States
- The Vermont Lung Center, The University of Vermont, Burlington, Vermont, United States
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4
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Soedono S, Sharlene S, Vo DHN, Averia M, Rosalie EE, Lee YK, Cho KW. Obese visceral adipose dendritic cells downregulate regulatory T cell development through IL-33. Front Immunol 2024; 15:1335651. [PMID: 38566998 PMCID: PMC10985834 DOI: 10.3389/fimmu.2024.1335651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/08/2024] [Indexed: 04/04/2024] Open
Abstract
Regulatory T cells (Tregs) residing in visceral adipose tissue (VAT) play a pivotal role in regulating tissue inflammation and metabolic dysfunction associated with obesity. However, the specific phenotypic and functional characteristics of Tregs in obese VAT, as well as the regulatory mechanisms shaping them, remain elusive. This study demonstrates that obesity selectively reduces Tregs in VAT, characterized by restrained proliferation, heightened PD-1 expression, and diminished ST2 expression. Additionally, obese VAT displays distinctive maturation of dendritic cells (DCs), marked by elevated expressions of MHC-II, CD86, and PD-L1, which are inversely correlated with VAT Tregs. In an in vitro co-culture experiment, only obese VAT DCs, not macrophages or DCs from subcutaneous adipose tissue (SAT) and spleen, result in decreased Treg differentiation and proliferation. Furthermore, Tregs differentiated by obese VAT DCs exhibit distinct characteristics resembling those of Tregs in obese VAT, such as reduced ST2 and IL-10 expression. Mechanistically, obesity lowers IL-33 production in VAT DCs, contributing to the diminished Treg differentiation. These findings collectively underscore the critical role of VAT DCs in modulating Treg generation and shaping Treg phenotype and function during obesity, potentially contributing to the regulation of VAT Treg populations.
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Affiliation(s)
- Shindy Soedono
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
| | - Sharlene Sharlene
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
| | - Dan Hoang Nguyet Vo
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
| | - Maria Averia
- Magister of Biotechnology, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Eufrasia Elaine Rosalie
- Faculty of Biotechnology, Department of Food Technology, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Yun Kyung Lee
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
| | - Kae Won Cho
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
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5
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Sabikunnahar B, Caldwell S, Varnum S, Hogan T, Lahue KG, Rathkolb B, Gerlini R, Dragano NRV, Aguilar‐Pimentel A, Irmler M, Sanz‐Moreno A, da Silva‐Buttkus P, Beckers J, Wolf E, Gailus‐Durner V, Fuchs H, Hrabe de Angelis M, Ather JL, Poynter ME, Krementsov DN. LncRNA U90926 is dispensable for the development of obesity-associated phenotypes in vivo. Physiol Rep 2024; 12:e15901. [PMID: 38171546 PMCID: PMC10764201 DOI: 10.14814/phy2.15901] [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: 08/26/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
Obesity is a global health problem characterized by excessive fat accumulation, driven by adipogenesis and lipid accumulation. Long non-coding RNAs (lncRNAs) have recently been implicated in regulating adipogenesis and adipose tissue function. Mouse lncRNA U90926 was previously identified as a repressor of in vitro adipogenesis in 3T3-L1 preadipocytes. Consequently, we hypothesized that, in vivo, U90926 may repress adipogenesis, and hence its deletion would increase weight gain and adiposity. We tested the hypothesis by applying U90926-deficient (U9-KO) mice to a high-throughput phenotyping pipeline. Compared with WT, U9-KO mice showed no major differences across a wide range of behavioral, neurological, and other physiological parameters. In mice fed a standard diet, we have found no differences in obesity-related phenotypes, including weight gain, fat mass, and plasma concentrations of glucose, insulin, triglycerides, and free fatty acids, in U9-KO mice compared to WT. U90926 deficiency lacked a major effect on white adipose tissue morphology and gene expression profile. Furthermore, in mice fed a high-fat diet, we found increased expression of U90926 in adipose tissue stromal vascular cell fraction, yet observed no effect of U90926 deficiency on weight gain, fat mass, adipogenesis marker expression, and immune cell infiltration into the adipose tissue. These data suggest that the U90926 lacks an essential role in obesity-related phenotypes and adipose tissue biology in vivo.
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Affiliation(s)
- Bristy Sabikunnahar
- Department of Biomedical and Health SciencesUniversity of VermontBurlingtonVermontUSA
| | - Sydney Caldwell
- Department of Biomedical and Health SciencesUniversity of VermontBurlingtonVermontUSA
| | - Stella Varnum
- Department of Biomedical and Health SciencesUniversity of VermontBurlingtonVermontUSA
| | - Tyler Hogan
- Department of Biomedical and Health SciencesUniversity of VermontBurlingtonVermontUSA
| | - Karolyn G. Lahue
- Department of Biomedical and Health SciencesUniversity of VermontBurlingtonVermontUSA
| | - Birgit Rathkolb
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
- Institute of Molecular Animal Breeding and Biotechnology, Gene CenterLudwig‐Maximilians‐University MünchenMunichGermany
| | - Raffaele Gerlini
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Nathalia R. V. Dragano
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
| | - Antonio Aguilar‐Pimentel
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Martin Irmler
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Adrián Sanz‐Moreno
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Patricia da Silva‐Buttkus
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Johannes Beckers
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
- TUM School of Life SciencesTechnische Universität MünchenFreisingGermany
| | - Eckhard Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Gene CenterLudwig‐Maximilians‐University MünchenMunichGermany
| | - Valerie Gailus‐Durner
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Helmut Fuchs
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
| | - Martin Hrabe de Angelis
- Institute of Experimental Genetics and German Mouse ClinicHelmholtz Zentrum MünchenNeuherbergGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
- TUM School of Life SciencesTechnische Universität MünchenFreisingGermany
| | | | | | - Dimitry N. Krementsov
- Department of Biomedical and Health SciencesUniversity of VermontBurlingtonVermontUSA
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Sorokin L, Corrêa LH. Whole-Mount Imaging of Adipose Tissue Macrophages. Methods Mol Biol 2024; 2713:307-322. [PMID: 37639132 DOI: 10.1007/978-1-0716-3437-0_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
The adipose tissue comprises highly heterogeneous macrophage populations, which play critical roles in the regulation of adipose tissue function and dysfunction during health and disease. Whole-amount staining is a powerful technique for macrophage characterization within the 3D environment of the adipose tissue, enabling the visualization of different macrophage populations and their interaction with other cells within their in vivo niche. Due to the high-fat content and softness, freezing and sectioning of adipose tissue is difficult, and distortion of tissue morphology typically occurs, especially in the case of white adipose tissue. We describe here a whole-mount staining alternative for adipose tissue imaging that preserves all structures and allows high-resolution image acquisition. We address in a step-by-step manner how to perform immunofluorescence staining of different fat pads and how to optimally visualize cellular and acellular (extracellular matrix) constituents of the adipose tissue and its vasculature, as well as resident and infiltrating macrophage populations.
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Affiliation(s)
- Lydia Sorokin
- Institute of Physiological Chemistry and Pathobiochemistry, Cells-in-Motion Interfaculty Center (CIMIC), University of Münster, Münster, Germany
| | - Luis Henrique Corrêa
- Institute of Physiological Chemistry and Pathobiochemistry, Cells-in-Motion Interfaculty Center (CIMIC), University of Münster, Münster, Germany.
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Poursharifi P, Schmitt C, Chenier I, Leung YH, Oppong AK, Bai Y, Klein LL, Al-Mass A, Lussier R, Abu-Farha M, Abubaker J, Al-Mulla F, Peyot ML, Madiraju SRM, Prentki M. ABHD6 suppression promotes anti-inflammatory polarization of adipose tissue macrophages via 2-monoacylglycerol/PPAR signaling in obese mice. Mol Metab 2023; 78:101822. [PMID: 37838014 PMCID: PMC10622714 DOI: 10.1016/j.molmet.2023.101822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/25/2023] [Accepted: 10/08/2023] [Indexed: 10/16/2023] Open
Abstract
OBJECTIVE Pro-inflammatory polarization of adipose tissue macrophages (ATMs) plays a critical role in the pathogenesis of obesity-associated chronic inflammation. However, little is known about the role of lipids in the regulation of ATMs polarity and inflammation in response to metabolic stress. Deletion of α/β-hydrolase domain-containing 6 (ABHD6), a monoacylglycerol (MAG) hydrolase, has been shown to protect against diet-induced obesity and insulin resistance. METHODS Here we investigated the immunometabolic role of macrophage ABHD6 in response to nutrient excess using whole-body ABHD6-KO mice and human and murine macrophage cell-lines treated with KT203, a selective and potent pharmacological ABHD6 inhibitor. RESULTS KO mice on high-fat diet showed lower susceptibility to systemic diet-induced inflammation. Moreover, in the setting of overnutrition, stromal vascular cells from gonadal fat of KO vs. control mice contained lower number of M1 macrophages and exhibited enhanced levels of metabolically activated macrophages (MMe) and M2 markers, oxygen consumption, and interleukin-6 (IL-6) release. Likewise, under in vitro nutri-stress condition, inhibition of ABHD6 in MMe-polarized macrophages attenuated the expression and release of pro-inflammatory cytokines and M1 markers and induced the upregulation of lipid metabolism genes. ABHD6-inhibited MMe macrophages showed elevated levels of peroxisome proliferator-activated receptors (PPARs) and 2-MAG species. Notably, among different MAG species, only 2-MAG treatment led to increased levels of PPAR target genes in MMe macrophages. CONCLUSIONS Collectively, our findings identify ABHD6 as a key component of pro-inflammatory macrophage activation in response to excess nutrition and implicate an endogenous macrophage lipolysis/ABHD6/2-MAG/PPARs cascade, as a lipid signaling and immunometabolic pathway, which favors the anti-inflammatory polarization of ATMs in obesity.
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Affiliation(s)
- P Poursharifi
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada.
| | - C Schmitt
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - I Chenier
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - Y H Leung
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - A K Oppong
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - Y Bai
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - L-L Klein
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - A Al-Mass
- Department of Biological Sciences, Faculty of Science, Kuwait University, Kuwait City, Kuwait
| | - R Lussier
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - M Abu-Farha
- Dasman Diabetes Institute, Kuwait City, Kuwait
| | - J Abubaker
- Dasman Diabetes Institute, Kuwait City, Kuwait
| | - F Al-Mulla
- Dasman Diabetes Institute, Kuwait City, Kuwait
| | - M-L Peyot
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - S R M Madiraju
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - M Prentki
- Montreal Diabetes Research Center - Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada.
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8
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Caslin HL, Cottam MA, Betjemann AM, Mashayekhi M, Silver HJ, Hasty AH. Single cell RNA-sequencing suggests a novel lipid associated mast cell population following weight cycling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.12.566786. [PMID: 38014269 PMCID: PMC10680619 DOI: 10.1101/2023.11.12.566786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Our recent study showed weight cycled mice have increased adipose mast cells compared to obese mice by single cell RNA-sequencing. Here, we aimed to confirm and elucidate these changes. Further analysis of our dataset showed that our initial mast cell cluster could subcluster into two unique populations: one with very high expression of classical mast cell markers and another with elevated lipid handling and antigen presentation genes. This new mast cell cluster accounted for most of the mast cells in the weight cycled group although it was not possible to detect the different populations by new studies with flow cytometry or Toluidine blue staining in mice, possibly due to a downregulation in classical mast cell genes. Interestingly, a pilot study in humans did suggest the existence of two mast cell populations in subcutaneous adipose tissue from obese women that appear similar to the murine populations detected by sequencing; one of which was significantly correlated with weight variance. Together, these data suggest that weight cycling may induce a unique population of mast cells similar to lipid associated macrophages. Future studies will focus on isolation of these cells to better determine their lineage, differentiation, and functional roles.
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9
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Nance SA, Muir L, Delproprosto J, Lumeng CN. MSR1 is not required for obesity-associated inflammation and insulin resistance in mice. Sci Rep 2023; 13:2651. [PMID: 36788340 PMCID: PMC9927046 DOI: 10.1038/s41598-023-29736-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Obesity induces a chronic inflammatory state associated with changes in adipose tissue macrophages (ATMs). Macrophage scavenger receptor 1 (MSR1) has been implicated in the regulation of adipose tissue inflammation and diabetes pathogenesis; however, reports have been mixed on the contribution of MSR1 in obesity and glucose intolerance. We observed increased MSR1 expression in VAT of obese diabetic individuals compared to non-diabetic and single nuclear RNA sequencing identified macrophage-specific expression of MSR1 in human adipose tissue. We examined male Msr1-/- (Msr1KO) and WT controls and observed protection from obesity and AT inflammation in non-littermate Msr1KO mice. We then evaluated obese littermate Msr1+/- (Msr1HET) and Msr1KO mice. Both Msr1KO mice and Msr1HET mice became obese and insulin resistant when compared to their normal chow diet counterparts, but there was no Msr1-dependent difference in body weight, glucose metabolism, or insulin resistance. Flow cytometry revealed no significant differences between genotypes in ATM subtypes or proliferation in male and female mice. We observed increased frequency of proliferating ATMs in obese female compared to male mice. Overall, we conclude that while MSR1 is a biomarker of diabetes status in human adipose tissue, in mice Msr1 is not required for obesity-associated insulin resistance or ATM accumulation.
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Affiliation(s)
- Sierra A Nance
- Molecular and Integrative Physiology, University of Michigan Medical School, 109 Zina Pitcher Place, 2057 BSRB, Ann Arbor, MI, 48109, USA
- Department of Pediatrics, University of Michigan Medical School, 109 Zina Pitcher Place, 2057 BSRB, Ann Arbor, MI, 48109, USA
| | - Lindsey Muir
- Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer Delproprosto
- Department of Pediatrics, University of Michigan Medical School, 109 Zina Pitcher Place, 2057 BSRB, Ann Arbor, MI, 48109, USA
| | - Carey N Lumeng
- Molecular and Integrative Physiology, University of Michigan Medical School, 109 Zina Pitcher Place, 2057 BSRB, Ann Arbor, MI, 48109, USA.
- Department of Pediatrics, University of Michigan Medical School, 109 Zina Pitcher Place, 2057 BSRB, Ann Arbor, MI, 48109, USA.
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Habibovic A, Hristova M, Morris CR, Lin MCJ, Cruz LC, Ather JL, Geiszt M, Anathy V, Janssen-Heininger YMW, Poynter ME, Dixon AE, van der Vliet A. Diet-induced obesity worsens allergen-induced type 2/type 17 inflammation in airways by enhancing DUOX1 activation. Am J Physiol Lung Cell Mol Physiol 2023; 324:L228-L242. [PMID: 36625485 PMCID: PMC9942905 DOI: 10.1152/ajplung.00331.2022] [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: 10/03/2022] [Revised: 12/16/2022] [Accepted: 12/29/2022] [Indexed: 01/11/2023] Open
Abstract
More than 50% of people with asthma in the United States are obese, and obesity often worsens symptoms of allergic asthma and impairs response to treatment. Based on previously established roles of the epithelial NADPH oxidase DUOX1 in allergic airway inflammation, we addressed the potential involvement of DUOX1 in altered allergic inflammation in the context of obesity. Intranasal house dust mite (HDM) allergen challenge of subjects with allergic asthma induced rapid secretion of IL-33, then IL-13, into the nasal lumen, responses that were significantly enhanced in obese asthmatic subjects (BMI >30). Induction of diet-induced obesity (DIO) in mice by high-fat diet (HFD) feeding similarly enhanced acute airway responses to intranasal HDM challenge, particularly with respect to secretion of IL-33 and type 2/type 3 cytokines, and this was associated with enhanced epithelial DUOX1 expression and was avoided in DUOX1-deficient mice. DIO also enhanced DUOX1-dependent features of chronic HDM-induced allergic inflammation. Although DUOX1 did not affect overall weight gain by HFD feeding, it contributed to glucose intolerance, suggesting a role in glucose metabolism. However, glucose intolerance induced by short-term HFD feeding, in the absence of adiposity, was not sufficient to alter HDM-induced acute airway responses. DIO was associated with enhanced presence of the adipokine leptin in the airways, and leptin enhanced DUOX1-dependent IL-13 and mucin production in airway epithelial cells. In conclusion, augmented inflammatory airway responses to HDM in obesity are associated with increases in airway epithelial DUOX1, and by increased airway epithelial leptin signaling.
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Affiliation(s)
- Aida Habibovic
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Milena Hristova
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Carolyn R Morris
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Miao-Chong Joy Lin
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Litiele C Cruz
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Jennifer L Ather
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Miklós Geiszt
- Department of Physiology and "Lendület" Peroxidase Enzyme Research Group, Semmelweis University, Budapest, Hungary
| | - Vikas Anathy
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Yvonne M W Janssen-Heininger
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Matthew E Poynter
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Anne E Dixon
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Albert van der Vliet
- Departments of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont
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11
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English J, Orofino J, Cederquist CT, Paul I, Li H, Auwerx J, Emili A, Belkina A, Cardamone D, Perissi V. GPS2-mediated regulation of the adipocyte secretome modulates adipose tissue remodeling at the onset of diet-induced obesity. Mol Metab 2023; 69:101682. [PMID: 36731652 PMCID: PMC9922684 DOI: 10.1016/j.molmet.2023.101682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 01/22/2023] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVE Dysfunctional, unhealthy expansion of white adipose tissue due to excess dietary intake is a process at the root of obesity and Type 2 Diabetes development. The objective of this study is to contribute to a better understanding of the underlying mechanism(s) regulating the early stages of adipose tissue expansion and adaptation to dietary stress due to an acute, high-fat diet (HFD) challenge, with a focus on the communication between adipocytes and other stromal cells. METHODS We profiled the early response to high-fat diet exposure in wildtype and adipocyte-specific GPS2-KO (GPS2-AKO) mice at the cellular, tissue and organismal level. A multi-pronged approach was employed to disentangle the complex cellular interactions dictating tissue remodeling, via single-cell RNA sequencing and FACS profiling of the stromal fraction, and semi-quantitative proteomics of the adipocyte-derived exosomal cargo after 5 weeks of HFD feeding. RESULTS Our results indicate that loss of GPS2 in mature adipocytes leads to impaired adaptation to the metabolic stress imposed by HFD feeding. GPS2-AKO mice are significantly more inflamed, insulin resistant, and obese, compared to the WT counterparts. At the cellular level, lack of GPS2 in adipocytes impacts upon other stromal populations, with both the eWAT and scWAT depots exhibiting changes in the immune and non-immune compartments that contribute to an increase in inflammatory and anti-adipogenic cell types. Our studies also revealed that adipocyte to stromal cell communication is facilitated by exosomes, and that transcriptional rewiring of the exosomal cargo is crucial for tissue remodeling. Loss of GPS2 results in increased expression of secreted factors promoting a TGFβ-driven fibrotic microenvironment favoring unhealthy tissue remodeling and expansion. CONCLUSIONS Adipocytes serve as an intercellular signaling hub, communicating with the stromal compartment via paracrine signaling. Our study highlights the importance of proper regulation of the 'secretome' released by energetically stressed adipocytes at the onset of obesity. Altered transcriptional regulation of factors secreted via adipocyte-derived exosomes (AdExos), in the absence of GPS2, contributes to the establishment of an anti-adipogenic, pro-fibrotic adipose tissue environment, and to hastened progression towards a metabolically dysfunctional phenotype.
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Affiliation(s)
- Justin English
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA; Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA.
| | - Joseph Orofino
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA.
| | - Carly T. Cederquist
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA
| | - Indranil Paul
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA; Center for Network Systems Biology, Boston University, Boston, MA, USA.
| | - Hao Li
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland.
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland.
| | - Andrew Emili
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA; Center for Network Systems Biology, Boston University, Boston, MA, USA.
| | - Anna Belkina
- Flow Cytometry Core Facility, Boston University School of Medicine, Boston, MA, USA; Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA.
| | - Dafne Cardamone
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA.
| | - Valentina Perissi
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, USA; School of Life Science, Northwestern Polytechnical University, Xi'an 710072, China.
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12
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Ren L, Du W, Song D, Lu H, Hamblin MH, Wang C, Du C, Fan GC, Becker RC, Fan Y. Genetic ablation of diabetes-associated gene Ccdc92 reduces obesity and insulin resistance in mice. iScience 2023; 26:105769. [PMID: 36594018 PMCID: PMC9804112 DOI: 10.1016/j.isci.2022.105769] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 10/30/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Multiple genome-wide association studies (GWAS) have identified specific genetic variants in the coiled-coil domain containing 92 (CCDC92) locus that is associated with obesity and type 2 diabetes in humans. However, the biological function of CCDC92 in obesity and insulin resistance remains to be explored. Utilizing wild-type (WT) and Ccdc92 whole-body knockout (KO) mice, we found that Ccdc92 KO reduced obesity and increased insulin sensitivity under high-fat diet (HFD) conditions. Ccdc92 KO inhibited macrophage infiltration and fibrosis in white adipose tissue (WAT), suggesting Ccdc92 ablation protects against adipose tissue dysfunction. Ccdc92 deletion also increased energy expenditure and further attenuated hepatic steatosis in mice on an HFD. Ccdc92 KO significantly inhibited the inflammatory response and suppressed the NLR Family Pyrin Domain Containing 3 (NLRP3) inflammasome in WAT. Altogether, we demonstrated the critical role of CCDC92 in metabolism, constituting a potential target for treating obesity and insulin resistance.
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Affiliation(s)
- Lu Ren
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Wa Du
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Dan Song
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Haocheng Lu
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Milton H. Hamblin
- Tulane University Health Sciences Center, Tulane University, New Orleans, LA 70112, USA
- College of Pharmacy, Xavier University of Louisiana, New Orleans, LA 70125, USA
| | - Chenran Wang
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Chunying Du
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology & Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Richard C. Becker
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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13
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James JV, Varghese J, John NM, Deschemin JC, Vaulont S, McKie AT, Jacob M. Insulin resistance and adipose tissue inflammation induced by a high-fat diet are attenuated in the absence of hepcidin. J Nutr Biochem 2023; 111:109175. [PMID: 36223834 DOI: 10.1016/j.jnutbio.2022.109175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 06/15/2022] [Accepted: 08/17/2022] [Indexed: 11/09/2022]
Abstract
Increased body iron stores and inflammation in adipose tissue have been implicated in the pathogenesis of insulin resistance (IR) and type 2 diabetes mellitus. However, the underlying basis of these associations is unclear. To attempt to investigate this, we studied the development of IR and associated inflammation in adipose tissue in the presence of increased body iron stores. Male hepcidin knock-out (Hamp1-/-) mice, which have increased body iron stores, and wild-type (WT) mice were fed a high-fat diet (HFD) for 12 and 24 weeks. Development of IR and metabolic parameters linked to this, insulin signaling in various tissues, and inflammation and iron-related parameters in visceral adipose tissue were studied in these animals. HFD-feeding resulted in impaired glucose tolerance in both genotypes of mice. In response to the HFD for 24 weeks, Hamp1-/- mice gained less body weight and developed less systemic IR than corresponding WT mice. This was associated with less lipid accumulation in the liver and decreased inflammation and lipolysis in the adipose tissue in the knock-out mice, than in the WT animals. Fewer macrophages infiltrated the adipose tissue in the knockout mice than in wild-type mice, with these macrophages exhibiting a predominantly anti-inflammatory (M2-like) phenotype and indirect evidence of a possible lowered intracellular iron content. The absence of hepcidin was thus associated with attenuated inflammation in the adipose tissue and increased whole-body insulin sensitivity, suggesting a role for it in these processes.
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Affiliation(s)
- Jithu Varghese James
- Department of Biochemistry, Christian Medical College, Vellore, India; Department of Diabetes & Obesity, School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK
| | - Joe Varghese
- Department of Biochemistry, Christian Medical College, Vellore, India
| | | | - Jean-Christophe Deschemin
- Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 Paris, France; Laboratory of Excellence GR-Ex, Paris, France
| | - Sophie Vaulont
- Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 Paris, France; Laboratory of Excellence GR-Ex, Paris, France
| | - Andrew Tristan McKie
- Department of Haematology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Molly Jacob
- Department of Biochemistry, Christian Medical College, Vellore, India.
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14
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Moyo KM, Choi J, Chang J, Soedono S, Nguyet DVH, Song YR, Park SJ, Go GW, Lee DY, Cho KW. 12-OAHSA is a component of olive oil and mitigates obesity-induced inflammation. J Nutr Biochem 2022; 110:109127. [PMID: 35977667 DOI: 10.1016/j.jnutbio.2022.109127] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 06/09/2022] [Accepted: 07/07/2022] [Indexed: 01/13/2023]
Abstract
Fatty acid esters of hydroxyl fatty acids (FAHFAs) are a new family of endogenous lipids that exert anti-inflammatory action. Among the various FAHFA isomers, the dietary source of oleic acid-hydroxy stearic acid (OAHSA) and its anti-inflammatory functions are poorly understood. This study investigated the composition of OAHSA isomers in dietary oils and the impact of 12-OAHSA on obesity-induced inflammation. Liquid chromatography with tandem mass spectrometry analysis revealed that various dietary oils, including fish oil, corn oil, palm oil, soybean oil, and olive oil, present a wide variation in OAHSA profiles and amounts. The highest amounts of total OAHSAs are present in olive oil including 12-OAHSA. Compared to vehicle-treated obese mice, administration of 12-OAHSA significantly improved glucose homeostasis, independent of body weight. 12-OAHSA-treated mice displayed significantly reduced accumulation of CD11c+ adipose tissue macrophages, and CD4+/CD8+ adipose tissue T lymphocytes. Concomitantly, the expression of pro-inflammatory cytokine genes and the nuclear factor kappa-light-chain-enhancer of activated B cells signaling pathway were significantly decreased in the 12-OAHSA-treated adipose tissue, while the expression of the anti-inflammatory gene Il10 was markedly increased. Moreover, in vitro cell culture experiments showed that 12-OAHSA significantly inhibited the lipopolysaccharides-induced inflammatory response in macrophages by suppressing the nuclear factor kappa-light-chain-enhancer of activated B cells signaling pathway. Collectively, these results indicated that 12-OAHSA, as a component of olive oil, mitigates obesity-induced insulin resistance by regulating AT inflammation. Therefore, 12-OAHSA could be used as a novel nutritional intervention against obesity-associated metabolic dysregulation.
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Affiliation(s)
- Knowledge Mudhibadhi Moyo
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
| | - Jieun Choi
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agriculture and Life Sciences, CALS, Seoul National University, Seoul, Republic of Korea
| | - Jiyeon Chang
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
| | - Shindy Soedono
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
| | - Dan Vo Hoang Nguyet
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea
| | - Yu-Ri Song
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea
| | - Soo Jin Park
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agriculture and Life Sciences, CALS, Seoul National University, Seoul, Republic of Korea
| | - Gwang-Woong Go
- Department of Food and Nutrition, Hanyang University, Seoul, Republic of Korea
| | - Do Yup Lee
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agriculture and Life Sciences, CALS, Seoul National University, Seoul, Republic of Korea.
| | - Kae Won Cho
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Republic of Korea; Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan, Republic of Korea.
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15
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Chun JJ, Chang J, Soedono S, Oh J, Kim YJ, Wee SY, Cho KW, Choi CY. Mechanical Stress Improves Fat Graft Survival by Promoting Adipose-Derived Stem Cells Proliferation. Int J Mol Sci 2022; 23:ijms231911839. [PMID: 36233141 PMCID: PMC9569524 DOI: 10.3390/ijms231911839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/28/2022] [Accepted: 10/01/2022] [Indexed: 11/16/2022] Open
Abstract
Cell-assisted lipotransfer (CAL), defined as co-transplantation of aspirated fat with enrichment of adipose-derived stem cells (ASCs), is a novel technique for cosmetic and reconstructive surgery to overcome the low survival rate of traditional fat grafting. However, clinically approved techniques for increasing the potency of ASCs in CAL have not been developed yet. As a more clinically applicable method, we used mechanical stress to reinforce the potency of ASCs. Mechanical stress was applied to the inguinal fat pad by needling. Morphological and cellular changes in adipose tissues were examined by flow cytometric analysis 1, 3, 5, and 7 days after the procedure. The proliferation and adipogenesis potencies of ASCs were evaluated. CAL with ASCs treated with mechanical stress or sham control were performed, and engraftment was determined at 4 weeks post-operation. Flow cytometry analysis revealed that mechanical stress significantly increased the number as well as the frequency of ASC proliferation in fat. Proliferation assays and adipocyte-specific marker gene analysis revealed that mechanical stress promoted proliferation potential but did not affect the differentiation capacity of ASCs. Moreover, CAL with cells derived from mechanical stress-treated fat increased the engraftment. Our results indicate that mechanical stress may be a simple method for improving the efficacy of CAL by enhancing the proliferation potency of ASCs.
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Affiliation(s)
- Jeong Jin Chun
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Hospital, Gumi 39371, Korea
| | - Jiyeon Chang
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan 31151, Korea
| | - Shindy Soedono
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan 31151, Korea
| | - Jieun Oh
- Department of Medical Biotechnology, Soonchunhyang University, Asan 31583, Korea
| | - Yeong Jin Kim
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Hospital, Bucheon 14584, Korea
| | - Syeo Young Wee
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Hospital, Gumi 39371, Korea
| | - Kae Won Cho
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan 31151, Korea
- Correspondence: (K.W.C.); (C.Y.C.); Tel.: +82-41-413-5028 (K.W.C.); +82-32-621-5319 (C.Y.C.)
| | - Chang Yong Choi
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Hospital, Bucheon 14584, Korea
- Correspondence: (K.W.C.); (C.Y.C.); Tel.: +82-41-413-5028 (K.W.C.); +82-32-621-5319 (C.Y.C.)
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16
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Schwarz B, Roberts LM, Bohrnsen E, Jessop F, Wehrly TD, Shaia C, Bosio CM. Contribution of Lipid Mediators in Divergent Outcomes following Acute Bacterial and Viral Lung Infections in the Obese Host. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:1323-1334. [PMID: 36002235 PMCID: PMC9529825 DOI: 10.4049/jimmunol.2200162] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 08/02/2022] [Indexed: 01/04/2023]
Abstract
Obesity is considered an important comorbidity for a range of noninfectious and infectious disease states including those that originate in the lung, yet the mechanisms that contribute to this susceptibility are not well defined. In this study, we used the diet-induced obesity (DIO) mouse model and two models of acute pulmonary infection, Francisella tularensis subspecies tularensis strain SchuS4 and SARS-CoV-2, to uncover the contribution of obesity in bacterial and viral disease. Whereas DIO mice were more resistant to infection with SchuS4, DIO animals were more susceptible to SARS-CoV-2 infection compared with regular weight mice. In both models, neither survival nor morbidity correlated with differences in pathogen load, overall cellularity, or influx of inflammatory cells in target organs of DIO and regular weight animals. Increased susceptibility was also not associated with exacerbated production of cytokines and chemokines in either model. Rather, we observed pathogen-specific dysregulation of the host lipidome that was associated with vulnerability to infection. Inhibition of specific pathways required for generation of lipid mediators reversed resistance to both bacterial and viral infection. Taken together, our data demonstrate disparity among obese individuals for control of lethal bacterial and viral infection and suggest that dysregulation of the host lipidome contributes to increased susceptibility to viral infection in the obese host.
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Affiliation(s)
- Benjamin Schwarz
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT; and
| | - Lydia M Roberts
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT; and
| | - Eric Bohrnsen
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT; and
| | - Forrest Jessop
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT; and
| | - Tara D Wehrly
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT; and
| | - Carl Shaia
- Rocky Mountain Veterinary Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT
| | - Catharine M Bosio
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT; and
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17
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Lee AG, Kang S, Im S, Pak YK. Cinnamic Acid Attenuates Peripheral and Hypothalamic Inflammation in High-Fat Diet-Induced Obese Mice. Pharmaceutics 2022; 14:pharmaceutics14081675. [PMID: 36015301 PMCID: PMC9413375 DOI: 10.3390/pharmaceutics14081675] [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: 06/28/2022] [Revised: 08/02/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Obesity is closely linked to chronic inflammation in peripheral organs and the hypothalamus. Chronic consumption of a high-fat diet (HFD) induces the differentiation of Ly6chigh monocytes into macrophages in adipose tissue, the liver, and the brain, as well as the secretion of pro-inflammatory cytokines. Although cinnamon improves obesity and related diseases, it is unclear which components of cinnamon can affect macrophages and inflammatory cytokines. We performed in silico analyses using ADME, drug-likeness, and molecular docking simulations to predict the active compounds of cinnamon. Among the 82 active compounds of cinnamon, cinnamic acid (CA) showed the highest score of ADME, blood–brain barrier permeability, drug-likeness, and cytokine binding. We then investigated whether CA modulates obesity-induced metabolic profiles and macrophage-related inflammatory responses in HFD-fed mice. While HFD feeding induced obesity, CA ameliorated obesity and related symptoms, such as epididymal fat gain, insulin resistance, glucose intolerance, and dyslipidemia, without hepatic and renal toxicity. CA also improved HFD-induced tumor necrosis factor-α, fat deposition, and macrophage infiltration in the liver and adipose tissue. CA decreased Ly6chigh monocytes, adipose tissue M1 macrophages, and hypothalamic microglial activation. These results suggest that CA attenuates the peripheral and hypothalamic inflammatory monocytes/macrophage system and treats obesity-related metabolic disorders.
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Affiliation(s)
| | - Sora Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Suyeol Im
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Youngmi Kim Pak
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02447, Korea
- Correspondence: ; Tel.: +82-2-961-0908
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18
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Zhou Y, Takano T, Li X, Wang Y, Wang R, Zhu Z, Tanokura M, Miyakawa T, Hachimura S. β-elemene regulates M1-M2 macrophage balance through the ERK/JNK/P38 MAPK signaling pathway. Commun Biol 2022; 5:519. [PMID: 35641589 PMCID: PMC9156783 DOI: 10.1038/s42003-022-03369-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 04/14/2022] [Indexed: 02/06/2023] Open
Abstract
Macrophages are classified into classically activated M1 macrophages and alternatively activated M2 macrophages, and the two phenotypes of macrophages are present during the development of various chronic diseases, including obesity-induced inflammation. In the present study, β-elemene, which is contained in various plant substances, is predicted to treat high-fat diet (HFD)-induced macrophage dysfunction based on the Gene Expression Omnibus (GEO) database and experimental validation. β-elemene impacts the imbalance of M1-M2 macrophages by regulating pro-inflammatory cytokines in mouse white adipose tissue both in vitro and in vivo. In addition, the RAW 264 cell line, which are macrophages from mouse ascites, is used to identify the effects of β-elemene on inhibiting bacterial endotoxin lipopolysaccharide (LPS)-induced phosphorylation of mitogen-activated protein kinase (MAPK) pathways. These pathways both induce and are activated by pro-inflammatory cytokines, and they also participate in the process of obesity-induced inflammation. The results highlight that β-elemene may represent a possible macrophage-mediated therapeutic medicine.
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Affiliation(s)
- Yingyu Zhou
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Tomohiro Takano
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Xuyang Li
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Yimei Wang
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Rong Wang
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Zhangliang Zhu
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin, 300457, P. R. China
| | - Masaru Tanokura
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan.
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Takuya Miyakawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Satoshi Hachimura
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan.
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan.
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19
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Ichikawa T, Wang D, Miyazawa K, Miyata K, Oshima M, Fukuma T. Chemical fixation creates nanoscale clusters on the cell surface by aggregating membrane proteins. Commun Biol 2022; 5:487. [PMID: 35595960 PMCID: PMC9122943 DOI: 10.1038/s42003-022-03437-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 05/03/2022] [Indexed: 11/09/2022] Open
Abstract
Chemical fixations have been thought to preserve the structures of the cells or tissues. However, given that the fixatives create crosslinks or aggregate proteins, there is a possibility that these fixatives create nanoscale artefacts by aggregation of membrane proteins which move around freely to some extent on the cell surface. Despite this, little research has been conducted about this problem, probably because there has been no method for observing cell surface structures at the nanoscale. In this study, we have developed a method to observe cell surfaces stably and with high resolution using atomic force microscopy and a microporous silicon nitride membrane. We demonstrate that the size of the protrusions on the cell surface is increased after treatment with three commonly used fixatives and show that these protrusions were created by the aggregation of membrane proteins by fixatives. These results call attention when observing fixed cell surfaces at the nanoscale. Atomic force microscopy imaging shows that cell fixation can lead to unwanted aggregation of membrane proteins.
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Affiliation(s)
- Takehiko Ichikawa
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, 920-1192, Japan.
| | - Dong Wang
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, 920-1192, Japan.,Division of Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, 920-1192, Japan
| | - Keisuke Miyazawa
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, 920-1192, Japan.,Faculty of Frontier Engineering, Kanazawa University, Kanazawa, 920-1192, Japan
| | - Kazuki Miyata
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, 920-1192, Japan.,Faculty of Frontier Engineering, Kanazawa University, Kanazawa, 920-1192, Japan
| | - Masanobu Oshima
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, 920-1192, Japan. .,Division of Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, 920-1192, Japan.
| | - Takeshi Fukuma
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, 920-1192, Japan. .,Faculty of Frontier Engineering, Kanazawa University, Kanazawa, 920-1192, Japan.
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20
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Morris CR, Habibovic A, Dustin CM, Schiffers C, Lin MC, Ather JL, Janssen-Heininger YMW, Poynter ME, Utermohlen O, Krönke M, van der Vliet A. Macrophage-intrinsic DUOX1 contributes to type 2 inflammation and mucus metaplasia during allergic airway disease. Mucosal Immunol 2022; 15:977-989. [PMID: 35654836 PMCID: PMC9391268 DOI: 10.1038/s41385-022-00530-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/24/2022] [Accepted: 03/23/2022] [Indexed: 02/04/2023]
Abstract
The NADPH oxidase DUOX1 contributes to epithelial production of alarmins, including interleukin (IL)-33, in response to injurious triggers such as airborne protease allergens, and mediates development of mucus metaplasia and airway remodeling in chronic allergic airways diseases. DUOX1 is also expressed in non-epithelial lung cell types, including macrophages that play an important role in airway remodeling during chronic lung disease. We therefore conditionally deleted DUOX1 in either lung epithelial or monocyte/macrophage lineages to address its cell-specific actions in innate airway responses to acute airway challenge with house dust mite (HDM) allergen, and in chronic HDM-driven allergic airway inflammation. As expected, acute responses to airway challenge with HDM, as well as type 2 inflammation and related features of airway remodeling during chronic HDM-induced allergic inflammation, were largely driven by DUOX1 with the respiratory epithelium. However, in the context of chronic HDM-driven inflammation, DUOX1 deletion in macrophages also significantly impaired type 2 cytokine production and indices of mucus metaplasia. Further studies revealed a contribution of macrophage-intrinsic DUOX1 in macrophage recruitment upon chronic HDM challenge, as well as features of macrophage activation that impact on type 2 inflammation and remodeling.
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Affiliation(s)
- Carolyn R Morris
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA
| | - Aida Habibovic
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA
| | - Christopher M Dustin
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA
| | - Caspar Schiffers
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA
| | - Miao-Chong Lin
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA
| | - Jennifer L Ather
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, USA
| | - Yvonne M W Janssen-Heininger
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA
| | - Matthew E Poynter
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, USA
| | - Olaf Utermohlen
- Institute for Medical Microbiology, Immunology and Hygiene, University Hospital Cologne, Cologne, Germany
| | - Martin Krönke
- Institute for Medical Microbiology, Immunology and Hygiene, University Hospital Cologne, Cologne, Germany
| | - Albert van der Vliet
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, USA.
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21
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Ho CK, Zheng D, Sun J, Wen D, Wu S, Yu L, Gao Y, Zhang Y, Li Q. LRG-1 promotes fat graft survival through the RAB31-mediated inhibition of hypoxia-induced apoptosis. J Cell Mol Med 2022; 26:3153-3168. [PMID: 35322540 PMCID: PMC9170820 DOI: 10.1111/jcmm.17280] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 02/10/2022] [Accepted: 02/19/2022] [Indexed: 11/29/2022] Open
Abstract
Autologous adipose tissue is an ideal soft tissue filling material, and its biocompatibility is better than that of artificial tissue substitutes, foreign bodies and heterogeneous materials. Although autologous fat transplantation has many advantages, the low retention rate of adipose tissue limits its clinical application. Here, we identified a secretory glycoprotein, leucine‐rich‐alpha‐2‐glycoprotein 1 (LRG‐1), that could promote fat graft survival through RAB31‐mediated inhibition of hypoxia‐induced apoptosis. We showed that LRG‐1 injection significantly increased the maintenance of fat volume and weight compared with the control. In addition, higher fat integrity, more viable adipocytes and fewer apoptotic cells were observed in the LRG‐1‐treated groups. Furthermore, we discovered that LRG‐1 could reduce the ADSC apoptosis induced by hypoxic conditions. The mechanism underlying the LRG‐1‐mediated suppression of the ADSC apoptosis induced by hypoxia was mediated by the upregulation of RAB31 expression. Using LRG‐1 for fat grafts may prove to be clinically successful for increasing the retention rate of transplanted fat.
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Affiliation(s)
- Chia-Kang Ho
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Danning Zheng
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaming Sun
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Dongsheng Wen
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Shan Wu
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Li Yu
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ya Gao
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yifan Zhang
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qingfeng Li
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
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22
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Dwaib HS, Ajouz G, AlZaim I, Rafeh R, Mroueh A, Mougharbil N, Ragi ME, Refaat M, Obeid O, El-Yazbi AF. Phosphorus Supplementation Mitigates Perivascular Adipose Inflammation-Induced Cardiovascular Consequences in Early Metabolic Impairment. J Am Heart Assoc 2021; 10:e023227. [PMID: 34873915 PMCID: PMC9075232 DOI: 10.1161/jaha.121.023227] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background The complexity of the interaction between metabolic dysfunction and cardiovascular complications has long been recognized to extend beyond simple perturbations of blood glucose levels. Yet, structured interventions targeting the root pathologies are not forthcoming. Growing evidence implicates the inflammatory changes occurring in perivascular adipose tissue (PVAT) as early instigators of cardiovascular deterioration. Methods and Results We used a nonobese prediabetic rat model with localized PVAT inflammation induced by hypercaloric diet feeding, which dilutes inorganic phosphorus (Pi) to energy ratio by 50%, to investigate whether Pi supplementation ameliorates the early metabolic impairment. A 12‐week Pi supplementation at concentrations equivalent to and twice as much as that in the control diet was performed. The localized PVAT inflammation was reversed in a dose‐dependent manner. The increased expression of UCP1 (uncoupling protein1), HIF‐1α (hypoxia inducible factor‐1α), and IL‐1β (interleukin‐1β), representing the hallmark of PVAT inflammation in this rat model, were reversed, with normalization of PVAT macrophage polarization. Pi supplementation restored the metabolic efficiency consistent with its putative role as an UCP1 inhibitor. Alongside, parasympathetic autonomic and cerebrovascular dysfunction function observed in the prediabetic model was reversed, together with the mitigation of multiple molecular and histological cardiovascular damage markers. Significantly, a Pi‐deficient control diet neither induced PVAT inflammation nor cardiovascular dysfunction, whereas Pi reinstatement in the diet after a 10‐week exposure to a hypercaloric low‐Pi diet ameliorated the dysfunction. Conclusions Our present results propose Pi supplementation as a simple intervention to reverse PVAT inflammation and its early cardiovascular consequences, possibly through the interference with hypercaloric‐induced increase in UCP1 expression/activity.
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Affiliation(s)
- Haneen S Dwaib
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon.,Department of Nutrition and Food Sciences Faculty of Agriculture and Food Sciences The American University of Beirut Beirut Lebanon
| | - Ghina Ajouz
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Ibrahim AlZaim
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon.,Department of Biochemistry and Molecular Genetics Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Rim Rafeh
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Ali Mroueh
- INSERM UMR 1260 Regenerative Nanomedicine FMTSUniversity of Strasbourg Strasbourg France
| | - Nahed Mougharbil
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Marie-Elizabeth Ragi
- Department of Nutrition and Food Sciences Faculty of Agriculture and Food Sciences The American University of Beirut Beirut Lebanon
| | - Marwan Refaat
- Department of Biochemistry and Molecular Genetics Faculty of Medicine The American University of Beirut Beirut Lebanon.,Division of Cardiology Department of Internal Medicine Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Omar Obeid
- Department of Nutrition and Food Sciences Faculty of Agriculture and Food Sciences The American University of Beirut Beirut Lebanon
| | - Ahmed F El-Yazbi
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon.,Department of Pharmacology and Toxicology Faculty of Pharmacy Alexandria University Alexandria Egypt.,Faculty of Pharmacy Al-Alamein International University Alamein Egypt
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23
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Cha HG, Kim DG, Chang J, Song Y, Jeong S, Nam SM, Wee SY, Cho KW, Choi CY. "Fasting: An Effective Preconditioning Method to Increase Fat Graft Survival". Aesthetic Plast Surg 2021; 46:1439-1449. [PMID: 34676429 DOI: 10.1007/s00266-021-02630-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 10/10/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Most preconditioning techniques before fat grafting require external manipulation. Since nutrition is the main factor maintaining the balance of lipogenesis and lipolysis, we hypothesized that fasting before undergoing autologous fat grafting may increase lipolysis and reduce adipocyte size, thereby improving the fat graft survival rate. METHODS C57BL/6 mice were divided into 24 h starved or fed groups. Adipose tissue lipolysis, adipogenesis, and angiogenesis-related gene expression, in fat from both groups, were analyzed. The volume and weight of the grafted fat at 4-8 weeks postoperatively were measured using micro-computed tomography. Immunohistochemistry staining and mRNA expression analysis were also performed to evaluate the effect of fasting on fat graft survival. RESULTS Fasting decreased adipocyte size by inducing adipose tissue lipolysis. Adipogenesis-related genes were remarkably downregulated while lipolysis-related genes and angiogenesis inducer genes were significantly upregulated in the starved adipose tissue. The mice grafted with the fat from the 24 h starved group had approximately 20% larger volumes and considerably heavier weights than those from the fed group. Increased viable adipocytes and vessels, and reduced macrophages in the fat grafts obtained from the 24 h starved group were also observed. CONCLUSIONS Fasting for 24 h before harvesting fat increased the retention volume of fat graft by increasing angiogenesis via VEGF induction. Therefore, fasting would be a novel and reliable preconditioning strategy to improve graft survival in autologous fat grafting. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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Affiliation(s)
- Han Gyu Cha
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, 170 Jomaru-ro, Bucheon-si, Gyeonggi-do, Korea
| | - Dong Gyu Kim
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, 170 Jomaru-ro, Bucheon-si, Gyeonggi-do, Korea
| | - Jiyeon Chang
- Department of Integrated of Biomedical Science, Soonchunhyang University, Cheonan, Korea
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Yuri Song
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Seongfeel Jeong
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan, Korea
| | - Seung Min Nam
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, 170 Jomaru-ro, Bucheon-si, Gyeonggi-do, Korea
| | - Syeo Young Wee
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Gumi Hospital, Soonchunhyang University College of Medicine, Gumi, Korea
| | - Kae Won Cho
- Department of Integrated of Biomedical Science, Soonchunhyang University, Cheonan, Korea.
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan, Korea.
| | - Chang Yong Choi
- Department of Plastic and Reconstructive Surgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, 170 Jomaru-ro, Bucheon-si, Gyeonggi-do, Korea.
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24
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Lécuyer E, Le Roy T, Gestin A, Lacombe A, Philippe C, Ponnaiah M, Huré JB, Fradet M, Ichou F, Boudebbouze S, Huby T, Gautier E, Rhimi M, Maguin E, Kapel N, Gérard P, Venteclef N, Garlatti M, Chassaing B, Lesnik P. Tolerogenic Dendritic Cells Shape a Transmissible Gut Microbiota That Protects From Metabolic Diseases. Diabetes 2021; 70:2067-2080. [PMID: 34078628 PMCID: PMC8576430 DOI: 10.2337/db20-1177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 05/26/2021] [Indexed: 11/13/2022]
Abstract
Excess chronic contact between microbial motifs and intestinal immune cells is known to trigger a low-grade inflammation involved in many pathologies such as obesity and diabetes. The important skewing of intestinal adaptive immunity in the context of diet-induced obesity (DIO) is well described, but how dendritic cells (DCs) participate in these changes is still poorly documented. To address this question, we challenged transgenic mice with enhanced DC life span and immunogenicity (DChBcl-2 mice) with a high-fat diet. Those mice display resistance to DIO and metabolic alterations. The DIO-resistant phenotype is associated with healthier parameters of intestinal barrier function and lower intestinal inflammation. DChBcl-2 DIO-resistant mice demonstrate a particular increase in tolerogenic DC numbers and function, which is associated with strong intestinal IgA, T helper 17, and regulatory T-cell immune responses. Microbiota composition and function analyses reveal that the DChBcl-2 mice microbiota is characterized by lower immunogenicity and an enhanced butyrate production. Cohousing experiments and fecal microbial transplantations are sufficient to transfer the DIO resistance status to wild-type mice, demonstrating that maintenance of DCs' tolerogenic ability sustains a microbiota able to drive DIO resistance. The tolerogenic function of DCs is revealed as a new potent target in metabolic disease management.
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Affiliation(s)
- Emelyne Lécuyer
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
| | - Tiphaine Le Roy
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
- Sorbonne/INSERM, Nutrition et obésités: approches systémiques (nutriOmics), Hôpital Pitié- Salpêtrière, Paris, France
| | - Aurélie Gestin
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Amélie Lacombe
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Catherine Philippe
- Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Maharajah Ponnaiah
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Jean-Baptiste Huré
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
| | - Magali Fradet
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Farid Ichou
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Samira Boudebbouze
- Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Thierry Huby
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Emmanuel Gautier
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
| | - Moez Rhimi
- Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Emmanuelle Maguin
- Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Nathalie Kapel
- Laboratoire de Coprologie Fonctionnelle, Hôpital Pitié-Salpêtrière, Paris, France
- INSERM UMRS 1139, Université de Paris, Paris, France
| | - Philippe Gérard
- Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Nicolas Venteclef
- INSERM, Cordeliers Research Centre, Immunity and Metabolism of Diabetes (IMMEDIAB), Université de Paris, Paris, France
| | - Michèle Garlatti
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
| | - Benoit Chassaing
- Neuroscience Institute and Institute for Biomedical Sciences, Georgia State University, Atlanta, GA
- INSERM, U1016, Team "Mucosal microbiota in chronic inflammatory diseases," Paris, France
| | - Philippe Lesnik
- INSERM, UMRS 1166 Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France
- Institute of Cardiometabolism and Nutrition, Hôpital Pitié-Salpêtrière, Paris, France
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25
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Grunewald M, Kumar S, Sharife H, Volinsky E, Gileles-Hillel A, Licht T, Permyakova A, Hinden L, Azar S, Friedmann Y, Kupetz P, Tzuberi R, Anisimov A, Alitalo K, Horwitz M, Leebhoff S, Khoma OZ, Hlushchuk R, Djonov V, Abramovitch R, Tam J, Keshet E. Counteracting age-related VEGF signaling insufficiency promotes healthy aging and extends life span. Science 2021; 373:373/6554/eabc8479. [PMID: 34326210 DOI: 10.1126/science.abc8479] [Citation(s) in RCA: 132] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 01/19/2021] [Accepted: 06/06/2021] [Indexed: 12/16/2022]
Abstract
Aging is an established risk factor for vascular diseases, but vascular aging itself may contribute to the progressive deterioration of organ function. Here, we show in aged mice that vascular endothelial growth factor (VEGF) signaling insufficiency, which is caused by increased production of decoy receptors, may drive physiological aging across multiple organ systems. Increasing VEGF signaling prevented age-associated capillary loss, improved organ perfusion and function, and extended life span. Healthier aging was evidenced by favorable metabolism and body composition and amelioration of aging-associated pathologies including hepatic steatosis, sarcopenia, osteoporosis, "inflammaging" (age-related multiorgan chronic inflammation), and increased tumor burden. These results indicate that VEGF signaling insufficiency affects organ aging in mice and suggest that modulating this pathway may result in increased mammalian life span and improved overall health.
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Affiliation(s)
- M Grunewald
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
| | - S Kumar
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - H Sharife
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - E Volinsky
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - A Gileles-Hillel
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.,Wohl Institute for Translational Medicine and the Goldyne Savad Institute for Gene Therapy, Hadassah Hospital, Jerusalem, Israel.,Pediatric Pulmonology and Sleep Unit, Department of Pediatrics, Hadassah Medical Center, Jerusalem, Israel
| | - T Licht
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - A Permyakova
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - L Hinden
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - S Azar
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Y Friedmann
- Bio-Imaging Unit, The Alexander Silberman Institute of Life Sciences, The Hebrew University, Jerusalem, Israel
| | - P Kupetz
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - R Tzuberi
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - A Anisimov
- Translational Cancer Biology Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - K Alitalo
- Translational Cancer Biology Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - M Horwitz
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - S Leebhoff
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - O Z Khoma
- Topographic and Clinical Anatomy, Institute of Anatomy, University of Bern, Bern, Switzerland
| | - R Hlushchuk
- Topographic and Clinical Anatomy, Institute of Anatomy, University of Bern, Bern, Switzerland
| | - V Djonov
- Topographic and Clinical Anatomy, Institute of Anatomy, University of Bern, Bern, Switzerland
| | - R Abramovitch
- Wohl Institute for Translational Medicine and the Goldyne Savad Institute for Gene Therapy, Hadassah Hospital, Jerusalem, Israel
| | - J Tam
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - E Keshet
- Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
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26
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Xu Y, Zhu D, Yang Q, Su D, Chen YQ. PTIP Deficiency in B Lymphocytes Reduces Subcutaneous Fat Deposition in Mice. BIOCHEMISTRY (MOSCOW) 2021; 86:568-576. [PMID: 33993864 DOI: 10.1134/s0006297921050060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Recent studies have predominantly focused on the role of B cells in metabolic diseases, yet the function of B cells in adipose homeostasis remains unclear. Pax transactivation domain-interacting protein (PTIP), a licensing factor for humoral immunity, is necessary for B cell development and activation. Here, using mice that lack PTIP in B cells (PTIP-/- mice), we explored the role of B cells in adipose homeostasis under physiological conditions. Fat deposition in 8-week-old mice was measured by micro-CT, and PTIP-/- mice presented a marked decrease in the deposition of subcutaneous adipose tissue (SAT). Untargeted lipidomics revealed that the triglyceride composition in SAT was altered in PTIP-/- mice. In addition, there was no difference in the number of adipocyte progenitor cells in the SAT of wild-type (WT) and PTIP-/- mice as measured by flow cytometry. To study the effects of steady-state IgM and IgG antibody levels on fat deposition, PTIP-/- mice were injected intraperitoneally with serum from WT mice once every 3-4 days for 4 weeks. The iSAT mass of the recipient mice showed no significant increase in comparison to the controls after 4 weeks of injections. Our findings reveal that PTIP plays an essential role in regulating subcutaneous adipocyte size, triglyceride composition, and fat deposition under physiological conditions by controlling B cells. The decreased subcutaneous fat deposition in PTIP-/- mice does not appear to be related to the number of adipocyte progenitor cells. The steady-state levels of IgM and IgG antibodies in vivo are not associated with the subcutaneous fat deposition.
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Affiliation(s)
- Yaqin Xu
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
| | - Doudou Zhu
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Qin Yang
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Dan Su
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Yong Q Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China. .,Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch, Jiangnan University, Wuxi, 214122, China
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27
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Mesothelial cells are not a source of adipocytes in mice. Cell Rep 2021; 36:109388. [PMID: 34260927 PMCID: PMC8317472 DOI: 10.1016/j.celrep.2021.109388] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/06/2021] [Accepted: 06/21/2021] [Indexed: 02/08/2023] Open
Abstract
Visceral adipose tissue (VAT) depots are associated with the adverse metabolic consequences of obesity, such as insulin resistance. The developmental origin of VAT depots and the identity and regulation of adipocyte progenitor cells have been active areas of investigation. In recent years, a paradigm of mesothelial cells as a source of VAT adipocyte progenitor cells has emerged based on lineage tracing studies using the Wilms’ tumor gene, Wt1, as a marker for cells of mesothelial origin. Here, we show that Wt1 expression in adipose tissue is not limited to the mesothelium but is also expressed by a distinct preadipocyte population in mice and humans. We identify keratin 19 (Krt19) as a highly specific marker for the adult mouse mesothelium and demonstrate that Krt19-expressing mesothelial cells do not differentiate into visceral adipocytes. These results contradict the assertion that the VAT mesothelium can serve as a source of adipocytes. Mesothelial differentiation into adipocytes has been proposed based on fate mapping experiments using Wt1 as a marker. Westcott et al. show that Wt1 is expressed in stromal preadipocytes in addition to mesothelium and that fate mapping using a specific mesothelial marker, Krt19, does not support adipocyte differentiation.
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28
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Nagashimada M, Sawamoto K, Ni Y, Kitade H, Nagata N, Xu L, Kobori M, Mukaida N, Yamashita T, Kaneko S, Ota T. CX3CL1-CX3CR1 Signaling Deficiency Exacerbates Obesity-induced Inflammation and Insulin Resistance in Male Mice. Endocrinology 2021; 162:6188411. [PMID: 33765141 DOI: 10.1210/endocr/bqab064] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Indexed: 12/21/2022]
Abstract
The CX3CL1-CX3CR1 system plays an important role in disease progression by regulating inflammation both positively and negatively. We reported previously that C-C chemokine receptors 2 and 5 promote obesity-associated adipose tissue inflammation and insulin resistance. Here, we demonstrate that CX3CL1-CX3CR1 signaling is involved in adipose tissue inflammation and insulin resistance in obese mice via adipose tissue macrophage recruitment and M1/M2 polarization. Cx3cl1 expression was persistently decreased in the epididymal white adipose tissue (eWAT) of high-fat diet-induced obese (DIO) mice, despite increased expression of other chemokines. Interestingly, in Cx3cr1-/- mice, glucose tolerance, insulin resistance, and hepatic steatosis induced by DIO or leptin deficiency were exacerbated. CX3CL1-CX3CR1 signaling deficiency resulted in reduced M2-polarized macrophage migration and an M1-dominant shift of macrophages within eWAT. Furthermore, transplantation of Cx3cr1-/- bone marrow was sufficient to impair glucose tolerance, insulin sensitivity, and regulation of M1/M2 status. Moreover, Cx3cl1 administration in vivo led to the attenuation of glucose intolerance and insulin resistance. Thus, therapy targeting the CX3CL1-CX3CR1 system may be beneficial in the treatment of type 2 diabetes by regulating M1/M2 macrophages.
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Affiliation(s)
- Mayumi Nagashimada
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Kazuki Sawamoto
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
| | - Yinhua Ni
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
- College of Biological Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Hironori Kitade
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
| | - Naoto Nagata
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
| | - Liang Xu
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
| | - Masuko Kobori
- Food Research Institute, National Agriculture and Food Research Organization, Tsukuba, Japan
| | - Naofumi Mukaida
- Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Tatsuya Yamashita
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
| | - Shuichi Kaneko
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
| | - Tsuguhito Ota
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Japan
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29
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Yu Q, Xu T, Ding F, Ding Z, Lin R. Decreased infiltration of adipose tissue macrophages and amplified inflammation of adipose tissue in obese mice with severe acute pancreatitis. Pancreatology 2021; 21:S1424-3903(21)00156-3. [PMID: 34088592 DOI: 10.1016/j.pan.2021.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 04/13/2021] [Accepted: 05/07/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Macrophages are involved in obesity-associated inflammation and severe acute pancreatitis (SAP) development. However, the role of adipose tissue macrophages (ATMs) in obesity-related SAP has not been fully elucidated. We investigated the relationship between ATMs and inflammatory responses in SAP model mice fed a high-fat diet (HFD). METHODS SAP was induced in animal models via intraperitoneal injections of caerulein and lipopolysaccharide (LPS). SAP severity was evaluated, both morphologically and biochemically, and macrophage infiltration in the pancreas and epididymal adipose tissue was measured. We also analyzed apoptosis levels, polarization of the ATMs, and expression of inflammatory mediators in epididymal adipose tissue. RESULTS Obesity increased disease severity in SAP animals. Increased macrophage infiltration in the pancreas induced by SAP was found in both normal diet (ND)- and HFD-fed mice. Total ATM infiltration in epididymal adipose tissue was elevated by HFD, while a significant decrease in infiltration was observed in both the ND + SAP and HFD + SAP groups. The apoptosis levels of ATMs were reduced in the HFD group, but were markedly enhanced in both the ND + SAP and HFD + SAP groups compared to their respective control groups. Higher levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and monocyte chemoattractant protein-1 (MCP-1) were observed in the HFD + SAP than in the ND + SAP group. Increased proportion of M1 type ATMs was induced by both HFD and SAP. CONCLUSIONS Total ATM infiltration was decreased in epididymal adipose tissue of SAP animals. ATM polarization to the M1 type resulted in an amplified inflammatory response in obese mice with SAP.
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Affiliation(s)
- Qiao Yu
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Tao Xu
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Feifei Ding
- Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou University, Lanzhou, 730030, China
| | - Zhen Ding
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Rong Lin
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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30
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Nguyen HP, Lin F, Yi D, Xie Y, Dinh J, Xue P, Sul HS. Aging-dependent regulatory cells emerge in subcutaneous fat to inhibit adipogenesis. Dev Cell 2021; 56:1437-1451.e3. [PMID: 33878347 PMCID: PMC8137669 DOI: 10.1016/j.devcel.2021.03.026] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/10/2020] [Accepted: 03/23/2021] [Indexed: 12/11/2022]
Abstract
Adipose tissue mass and adiposity change throughout the lifespan. During aging, while visceral adipose tissue (VAT) tends to increase, peripheral subcutaneous adipose tissue (SAT) decreases significantly. Unlike VAT, which is linked to metabolic diseases, including type 2 diabetes, SAT has beneficial effects. However, the molecular details behind the aging-associated loss of SAT remain unclear. Here, by comparing scRNA-seq of total stromal vascular cells of SAT from young and aging mice, we identify an aging-dependent regulatory cell (ARC) population that emerges only in SAT of aged mice and humans. ARCs express adipose progenitor markers but lack adipogenic capacity; they secrete high levels of pro-inflammatory chemokines, including Ccl6, to inhibit proliferation and differentiation of neighboring adipose precursors. We also found Pu.1 to be a driving factor for ARC development. We identify an ARC population and its capacity to inhibit differentiation of neighboring adipose precursors, correlating with aging-associated loss of SAT.
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Affiliation(s)
- Hai P Nguyen
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Frances Lin
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Danielle Yi
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA; Endocrinology Program, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Ying Xie
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jennie Dinh
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Pengya Xue
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Hei Sook Sul
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA; Endocrinology Program, University of California, Berkeley, Berkeley, CA 94720, USA.
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31
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Brinker G, Froeba J, Arndt L, Braune J, Hobusch C, Lindhorst A, Bechmann I, Gericke M. CD4 + T cells regulate glucose homeostasis independent of adipose tissue dysfunction in mice. Eur J Immunol 2021; 51:1399-1411. [PMID: 33784418 DOI: 10.1002/eji.202048870] [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: 07/13/2020] [Revised: 02/10/2021] [Accepted: 03/16/2021] [Indexed: 11/11/2022]
Abstract
Obesity is frequently associated with a chronic low-grade inflammation in the adipose tissue (AT) and impaired glucose homeostasis. Adipose tissue macrophages (ATMs) have been shown to accumulate in the inflamed AT either by means of recruitment from the blood or local proliferation. ATM proliferation and activation can be stimulated by TH2 cytokines, such as IL-4 and IL-13, suggesting involvement of CD4-positive T cells in ATM proliferation and activation. Furthermore, several studies have associated T cells to alterations in glucose metabolism. Therefore, we sought to examine a direct impact of CD4-positive T cells on ATM activation, ATM proliferation and glucose homeostasis using an in vivo depletion model. Surprisingly, CD4 depletion did not affect ATM activation, ATM proliferation, or insulin sensitivity. However, CD4 depletion led to a significant improvement of glucose tolerance. In line with this, we found moderate disturbances in pancreatic endocrine function following CD4 depletion. Hence, our data suggest that the effect on glucose metabolism observed after CD4 depletion might be mediated by organs other than AT and independent of AT inflammation.
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Affiliation(s)
- Georg Brinker
- Institute of Anatomy, Leipzig University, Leipzig, D-04103, Germany
| | - Janine Froeba
- Institute of Anatomy, Leipzig University, Leipzig, D-04103, Germany.,Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), D-06108, Germany
| | - Lilli Arndt
- Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), D-06108, Germany
| | - Julia Braune
- Institute of Anatomy, Leipzig University, Leipzig, D-04103, Germany.,Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), D-06108, Germany
| | | | - Andreas Lindhorst
- Institute of Anatomy, Leipzig University, Leipzig, D-04103, Germany.,Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), D-06108, Germany
| | - Ingo Bechmann
- Institute of Anatomy, Leipzig University, Leipzig, D-04103, Germany
| | - Martin Gericke
- Institute of Anatomy, Leipzig University, Leipzig, D-04103, Germany.,Institute of Anatomy and Cell Biology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), D-06108, Germany
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32
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Han CY, Kang I, Harten IA, Gebe JA, Chan CK, Omer M, Alonge KM, den Hartigh LJ, Gomes Kjerulf D, Goodspeed L, Subramanian S, Wang S, Kim F, Birk DE, Wight TN, Chait A. Adipocyte-Derived Versican and Macrophage-Derived Biglycan Control Adipose Tissue Inflammation in Obesity. Cell Rep 2021; 31:107818. [PMID: 32610121 DOI: 10.1016/j.celrep.2020.107818] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/20/2020] [Accepted: 06/04/2020] [Indexed: 12/18/2022] Open
Abstract
Obesity is characterized by adipose tissue inflammation. Because proteoglycans regulate inflammation, here we investigate their role in adipose tissue inflammation in obesity. We find that adipose tissue versican and biglycan increase in obesity. Versican is produced mainly by adipocytes and biglycan by adipose tissue macrophages. Both proteoglycans are also present in adipose tissue from obese human subjects undergoing gastric bypass surgery. Deletion of adipocyte-specific versican or macrophage-specific biglycan in mice reduces macrophage accumulation and chemokine and cytokine expression, although only adipocyte-specific versican deletion leads to sustained improvement in glucose tolerance. Macrophage-derived biglycan activates inflammatory genes in adipocytes. Versican expression increases in cultured adipocytes exposed to excess glucose, and adipocyte-conditioned medium stimulates inflammation in resident peritoneal macrophages, in part because of a versican breakdown product, versikine. These findings provide insights into the role of adipocyte- and macrophage-derived proteoglycans in adipose tissue inflammation in obesity.
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Affiliation(s)
- Chang Yeop Han
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Inkyung Kang
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Ingrid A Harten
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - John A Gebe
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Christina K Chan
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Mohamed Omer
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Kimberly M Alonge
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Laura J den Hartigh
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Diego Gomes Kjerulf
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Leela Goodspeed
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Savitha Subramanian
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Shari Wang
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Francis Kim
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - David E Birk
- Department of Molecular Pharmacology & Physiology, University of South Florida, Tampa, FL, USA
| | - Thomas N Wight
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Alan Chait
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA.
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33
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Porsche CE, Delproposto JB, Geletka L, O'Rourke R, Lumeng CN. Obesity results in adipose tissue T cell exhaustion. JCI Insight 2021; 6:139793. [PMID: 33724954 PMCID: PMC8119198 DOI: 10.1172/jci.insight.139793] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 03/10/2021] [Indexed: 12/18/2022] Open
Abstract
Despite studies implicating adipose tissue T cells (ATT) in the initiation and persistence of adipose tissue inflammation, fundamental gaps in knowledge regarding ATT function impedes progress toward understanding how obesity influences adaptive immunity. We hypothesized that ATT activation and function would have tissue-resident–specific properties and that obesity would potentiate their inflammatory properties. We assessed ATT activation and inflammatory potential within mouse and human stromal vascular fraction (SVF). Surprisingly, murine and human ATTs from obese visceral white adipose tissue exhibited impaired inflammatory characteristics upon stimulation. Both environmental and cell-intrinsic factors are implicated in ATT dysfunction. Soluble factors from obese SVF inhibit ATT activation. Additionally, chronic signaling from macrophage major histocompatibility complex II (MHCII) is necessary for ATT impairment in obese adipose tissue but is independent of increased PD1 expression. To assess intracellular signaling mechanisms responsible for ATT inflammation impairments, single-cell RNA sequencing of ATTs was performed. ATTs in obese adipose tissue exhibit enrichment of genes characteristic of T cell exhaustion and increased expression of coinhibitory receptor Btla. In sum, this work suggests that obesity-induced ATTs have functional characteristics and gene expression resembling T cell exhaustion induced by local soluble factors and cell-to-cell interactions in adipose tissue.
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Affiliation(s)
| | | | - Lynn Geletka
- Department of Pediatrics and Communicable Diseases, and
| | - Robert O'Rourke
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA.,Department of Surgery, Ann Arbor Veterans Affairs Healthcare System, Ann Arbor, Michigan, USA
| | - Carey N Lumeng
- Graduate Program in Immunology.,Department of Pediatrics and Communicable Diseases, and
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34
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Hu X, Dong X, Li G, Chen Y, Chen J, He X, Sun H, Kim DH, Kemper JK, Chen LF. Brd4 modulates diet-induced obesity via PPARγ-dependent Gdf3 expression in adipose tissue macrophages. JCI Insight 2021; 6:143379. [PMID: 33830083 PMCID: PMC8119191 DOI: 10.1172/jci.insight.143379] [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] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 02/26/2021] [Indexed: 12/19/2022] Open
Abstract
Macrophage-mediated inflammatory response has been implicated in the pathogenesis of obesity and insulin resistance. Brd4 has emerged as a key regulator in the innate immune response. However, the role of Brd4 in obesity-associated inflammation and insulin resistance remains uncharacterized. Here, we demonstrated that myeloid lineage-specific Brd4 knockout (Brd4-CKO) mice were protected from high-fat diet-induced (HFD-induced) obesity with less fat accumulation, higher energy expenditure, and increased lipolysis in adipose tissue. Brd4-CKO mice fed a HFD also displayed reduced local and systemic inflammation with improved insulin sensitivity. RNA-Seq of adipose tissue macrophages (ATMs) from HFD-fed WT and Brd4-CKO mice revealed that expression of antilipolytic factor Gdf3 was significantly decreased in ATMs of Brd4-CKO mice. We also found that Brd4 bound to the promoter and enhancers of Gdf3 to facilitate PPARγ-dependent Gdf3 expression in macrophages. Furthermore, Brd4-mediated expression of Gdf3 acted as a paracrine signal targeting adipocytes to suppress the expression of lipases and the associated lipolysis in cultured cells and mice. Controlling the expression of Gdf3 in ATMs could be one of the mechanisms by which Brd4 modulates lipid metabolism and diet-induced obesity. This study suggests that Brd4 could be a potential therapeutic target for obesity and insulin resistance.
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Affiliation(s)
- Xiangming Hu
- Fujian Key Laboratory for Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
- Department of Biochemistry
| | | | - Guo Li
- Fujian Key Laboratory for Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | | | - Jinjing Chen
- Department of Molecular and Integrative Physiology, and
| | - Xiaoxin He
- Fujian Key Laboratory for Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Hao Sun
- Department of Molecular and Integrative Physiology, and
| | - Dong-Hyun Kim
- Department of Molecular and Integrative Physiology, and
| | | | - Lin-Feng Chen
- Department of Biochemistry
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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35
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Atho'illah MF, Safitri YD, Nur'aini FD, Widyarti S, Tsuboi H, Rifa'i M. Elicited soybean extract attenuates proinflammatory cytokines expression by modulating TLR3/TLR4 activation in high-fat, high-fructose diet mice. J Ayurveda Integr Med 2021; 12:43-51. [PMID: 33531194 PMCID: PMC8039419 DOI: 10.1016/j.jaim.2021.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/31/2020] [Accepted: 01/08/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The high-fat, high-fructose diet (HFFD) provokes overnutrition and inflammation directly, mainly through Toll-like receptors (TLRs). Soybean (Glycine max L.) contains isoflavone that can be transformed into glyceollin by microbial and physical stimuli. Glyceollin possesses many beneficial effects on health. OBJECTIVE This study evaluates the beneficial effect of soybean extract elicited by Saccharomyces cerevisiae and light (ESE) on dendritic cells (DCs) profile and naïve T cells in HFFD mice. MATERIALS AND METHODS Female Balb/C mice were fed with HFFD for 24 weeks then orally administered with simvastatin 2.8 mg/kg BW or ESE 78, 104, and 130 mg/kg BW at the last four weeks. The expression of splenic CD11c+TLR3+, CD11c+TLR4+, NFκB+, CD11c+IL-17+, CD11c+TNF-α+, CD4+CD62L+, and CD8+CD62L+ subsets was measured by flow cytometry. The molecular docking has been measured using Pyrx 0.8, displayed in PyMol and Biovia Discovery Studio. RESULT HFFD significantly increased CD11c+TLR3+, CD11c+TLR4+, NFκB+, CD11c+IL-17+, CD11c+TNF-α+ expression and decreased CD4+CD62L+ and CD8+CD62L+ (p < 0.05) compared to normal diet (ND) groups. ESE reduced CD11c+TLR3+, CD11c+TLR4+, thereby decreasing NFκB+, as well as decreased the CD11c+IL-17+, CD11c+TNF-α+, and restores CD4+CD62L+ and CD8+CD62L+ subsets in HFFD mice. Glyceollin II exhibited the best binding affinity with an average energy of -7.3 kcal/mol to TLR3 and -7.9 kcal/mol to TLR4. CONCLUSION The bioactive compound in ESE act synergistically to modulate TLR3/TLR4 activation, reduced NFκB, IL-17, and TNF-α, and restores naïve T cells expression in HFFD mice. ESE was a favorable candidate to mitigate chronic inflammation.
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Affiliation(s)
- Mochammad Fitri Atho'illah
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Yunita Diyah Safitri
- Medical Laboratory Technology Program, Sekolah Tinggi Ilmu Kesehatan Karya Putra Bangsa, 66291, Tulungagung, East Java, Indonesia
| | - Farida Dewi Nur'aini
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Sri Widyarti
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Hideo Tsuboi
- Department of Immunology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showaku, Nagoya, 466-8550, Japan
| | - Muhaimin Rifa'i
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia; Center of Biosystem Study, LPPM of Brawijaya University, 65145, Malang, East Java, Indonesia.
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36
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Martos-Rus C, Katz-Greenberg G, Lin Z, Serrano E, Whitaker-Menezes D, Domingo-Vidal M, Roche M, Ramaswamy K, Hooper DC, Falkner B, Martinez Cantarin MP. Macrophage and adipocyte interaction as a source of inflammation in kidney disease. Sci Rep 2021; 11:2974. [PMID: 33536542 PMCID: PMC7859223 DOI: 10.1038/s41598-021-82685-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 01/21/2021] [Indexed: 12/13/2022] Open
Abstract
In obesity, adipose tissue derived inflammation is associated with unfavorable metabolic consequences. Uremic inflammation is prevalent and contributes to detrimental outcomes. However, the contribution of adipose tissue inflammation in uremia has not been characterized. We studied the contribution of adipose tissue to uremic inflammation in-vitro, in-vivo and in human samples. Exposure to uremic serum resulted in activation of inflammatory pathways including NFκB and HIF1, upregulation of inflammatory cytokines/chemokines and catabolism with lipolysis, and lactate production. Also, co-culture of adipocytes with macrophages primed by uremic serum resulted in higher inflammatory cytokine expression than adipocytes exposed only to uremic serum. Adipose tissue of end stage renal disease subjects revealed increased macrophage infiltration compared to controls after BMI stratification. Similarly, mice with kidney disease recapitulated the inflammatory state observed in uremic patients and additionally demonstrated increased peripheral monocytes and inflammatory polarization of adipose tissue macrophages (ATMS). In contrast, adipose tissue in uremic IL-6 knock out mice showed reduced ATMS density compared to uremic wild-type controls. Differences in ATMS density highlight the necessary role of IL-6 in macrophage infiltration in uremia. Uremia promotes changes in adipocytes and macrophages enhancing production of inflammatory cytokines. We demonstrate an interaction between uremic activated macrophages and adipose tissue that augments inflammation in uremia.
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Affiliation(s)
- Cristina Martos-Rus
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, 833 Chestnut Street, Suite 700, Philadelphia, PA, 19107, USA
| | - Goni Katz-Greenberg
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, 833 Chestnut Street, Suite 700, Philadelphia, PA, 19107, USA
| | - Zhao Lin
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, USA
| | - Eurico Serrano
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, 833 Chestnut Street, Suite 700, Philadelphia, PA, 19107, USA
| | | | | | - Megan Roche
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, USA
| | - Kavitha Ramaswamy
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, 833 Chestnut Street, Suite 700, Philadelphia, PA, 19107, USA
| | - Douglas C Hooper
- Cancer Biology and Neurological Surgery, Thomas Jefferson University, Philadelphia, USA
| | - Bonita Falkner
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, 833 Chestnut Street, Suite 700, Philadelphia, PA, 19107, USA
| | - Maria P Martinez Cantarin
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, 833 Chestnut Street, Suite 700, Philadelphia, PA, 19107, USA.
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37
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Wang J, Polaki V, Chen S, Bihl JC. Exercise Improves Endothelial Function Associated with Alleviated Inflammation and Oxidative Stress of Perivascular Adipose Tissue in Type 2 Diabetic Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8830537. [PMID: 33425218 PMCID: PMC7781720 DOI: 10.1155/2020/8830537] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/03/2020] [Accepted: 12/14/2020] [Indexed: 12/11/2022]
Abstract
Perivascular adipose tissue (PVAT), a type of adipose tissue that surrounds the blood vessels, has been considered an active component of the blood vessel walls and involved in vascular homeostasis. Recent evidence shows that increased inflammation and oxidative stress in PVAT contribute to endothelial dysfunction in type 2 diabetes (T2D). Exercise is an important nonpharmacological approach for vascular diseases. However, there is limited information regarding whether the beneficial effects of exercise on vascular function is related to the PVAT status. In this study, we investigated whether exercise can decrease oxidative stress and inflammation of PVAT and promote the improvement of endothelial function in a T2D mouse model. Diabetic db/db (5-week old) mice performed treadmill exercise (10 m/min) or keep sedentary for 8 weeks. Body weight, fasting blood glucose levels, glucose, and insulin tolerance were determined. The cytokines (IL-6, IL-10, IFN-γ, and TNF-a) and adiponectin levels, macrophage polarization and adipocyte type in PVAT, oxidative stress, and nitric oxide (NO) expression in the vascular wall were evaluated. The adhesion ability of primary aorta endothelial cells was analyzed. Our data showed that (1) diabetic db/db mice had increased body weight and fasting blood glucose level, compromised glucose tolerance, and insulin sensitivity, which were decreased/improved by exercise intervention. (2) Exercise intervention increased the percentage of multilocular brown adipocytes, promoted M1 to M2 macrophage polarization, associating with an increase of adiponectin and IL-10 levels and decrease of IFN-γ, IL-6, and TNF-a levels in PVAT. (3) Exercise decreased superoxide production in PVAT and the vascular wall of diabetic mice, accompanied with increased NO level. (4) The adhesion ability of aorta endothelial cells to leukocytes was decreased in exercised db/db mice, accompanied by decreased intercellular adhesion molecule 1 (ICAM-1) and vascular cell adhesion molecule 1 (VCAM-1) expressions. Of interesting, coculture with PVAT-culture medium from exercised db/db mice could also reduce ICAM-1 and VCAM-1 expressions in primary endothelial cells. In conclusion, our data suggest that exercise improved endothelial function by attenuating the inflammation and oxidative stress in PVAT.
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Affiliation(s)
- Jinju Wang
- Department of Biomedical Sciences, Joan C Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
| | - Venkata Polaki
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH 45435, USA
| | - Shuzhen Chen
- Department of Biomedical Sciences, Joan C Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
| | - Ji C. Bihl
- Department of Biomedical Sciences, Joan C Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH 45435, USA
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38
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Shan B, Shao M, Zhang Q, Hepler C, Paschoal VA, Barnes SD, Vishvanath L, An YA, Jia L, Malladi VS, Strand DW, Gupta OT, Elmquist JK, Oh D, Gupta RK. Perivascular mesenchymal cells control adipose-tissue macrophage accrual in obesity. Nat Metab 2020; 2:1332-1349. [PMID: 33139957 PMCID: PMC7669663 DOI: 10.1038/s42255-020-00301-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
Chronic low-grade white adipose tissue (WAT) inflammation is a hallmark of metabolic syndrome in obesity. Here, we demonstrate that a subpopulation of mouse WAT perivascular (PDGFRβ+) cells, termed fibro-inflammatory progenitors (FIPs), activate proinflammatory signalling cascades shortly after the onset of high-fat diet feeding and regulate proinflammatory macrophage accumulation in WAT in a TLR4-dependent manner. FIPs activation in obesity is mediated by the downregulation of zinc-finger protein 423 (ZFP423), identified here as a transcriptional corepressor of NF-κB. ZFP423 suppresses the DNA-binding capacity of the p65 subunit of NF-κB by inducing a p300-to-NuRD coregulator switch. Doxycycline-inducible expression of Zfp423 in PDGFRβ+ cells suppresses inflammatory signalling in FIPs and attenuates metabolic inflammation of visceral WAT in obesity. Inducible inactivation of Zfp423 in PDGFRβ+ cells increases FIP activity, exacerbates adipose macrophage accrual and promotes WAT dysfunction. These studies implicate perivascular mesenchymal cells as important regulators of chronic adipose-tissue inflammation in obesity and identify ZFP423 as a transcriptional break on NF-κB signalling.
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Affiliation(s)
- Bo Shan
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Mengle Shao
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Qianbin Zhang
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Chelsea Hepler
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Vivian A Paschoal
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Spencer D Barnes
- Lyda Hill Department of Bioinformatics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Lavanya Vishvanath
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yu A An
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Lin Jia
- Center for Hypothalamic Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, USA
| | - Venkat S Malladi
- Lyda Hill Department of Bioinformatics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Douglas W Strand
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Olga T Gupta
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Joel K Elmquist
- Center for Hypothalamic Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, USA
| | - Dayoung Oh
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rana K Gupta
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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Covarrubias AJ, Kale A, Perrone R, Lopez-Dominguez JA, Pisco AO, Kasler HG, Schmidt MS, Heckenbach I, Kwok R, Wiley CD, Wong HS, Gibbs E, Iyer SS, Basisty N, Wu Q, Kim IJ, Silva E, Vitangcol K, Shin KO, Lee YM, Riley R, Ben-Sahra I, Ott M, Schilling B, Scheibye-Knudsen M, Ishihara K, Quake SR, Newman J, Brenner C, Campisi J, Verdin E. Senescent cells promote tissue NAD + decline during ageing via the activation of CD38 + macrophages. Nat Metab 2020; 2:1265-1283. [PMID: 33199924 PMCID: PMC7908681 DOI: 10.1038/s42255-020-00305-3] [Citation(s) in RCA: 203] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/25/2020] [Indexed: 11/08/2022]
Abstract
Declining tissue nicotinamide adenine dinucleotide (NAD) levels are linked to ageing and its associated diseases. However, the mechanism for this decline is unclear. Here, we show that pro-inflammatory M1-like macrophages, but not naive or M2 macrophages, accumulate in metabolic tissues, including visceral white adipose tissue and liver, during ageing and acute responses to inflammation. These M1-like macrophages express high levels of the NAD-consuming enzyme CD38 and have enhanced CD38-dependent NADase activity, thereby reducing tissue NAD levels. We also find that senescent cells progressively accumulate in visceral white adipose tissue and liver during ageing and that inflammatory cytokines secreted by senescent cells (the senescence-associated secretory phenotype, SASP) induce macrophages to proliferate and express CD38. These results uncover a new causal link among resident tissue macrophages, cellular senescence and tissue NAD decline during ageing and offer novel therapeutic opportunities to maintain NAD levels during ageing.
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Affiliation(s)
- Anthony J Covarrubias
- Buck Institute for Research on Aging, Novato, CA, USA
- UCSF Department of Medicine, San Francisco, CA, USA
| | - Abhijit Kale
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | | | | | | | - Mark S Schmidt
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Indra Heckenbach
- Buck Institute for Research on Aging, Novato, CA, USA
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Ryan Kwok
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Hoi-Shan Wong
- Buck Institute for Research on Aging, Novato, CA, USA
| | - Eddy Gibbs
- Buck Institute for Research on Aging, Novato, CA, USA
| | - Shankar S Iyer
- Division of Gastroenterology, Hepatology and Endoscopy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Qiuxia Wu
- Buck Institute for Research on Aging, Novato, CA, USA
| | - Ik-Jung Kim
- Buck Institute for Research on Aging, Novato, CA, USA
| | - Elena Silva
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Kyong-Oh Shin
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
- Department of Food Science and Nutrition, Hallym University, Chuncheon, Republic of Korea
| | - Yong-Moon Lee
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | | | - Issam Ben-Sahra
- Department of Biochemistry and Molecular Genetics, Northwestern University, Chicago, IL, USA
| | - Melanie Ott
- Gladstone Institutes, Virology and Immunology, San Francisco, CA, USA
| | | | - Morten Scheibye-Knudsen
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Katsuhiko Ishihara
- Immunology and Molecular Genetics, Kawasaki Medical School, Kurashiki, Japan
| | - Stephen R Quake
- Chan Zuckerberg Biohub, San Francisco, CA, USA
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - John Newman
- Buck Institute for Research on Aging, Novato, CA, USA
- UCSF Department of Medicine, San Francisco, CA, USA
| | - Charles Brenner
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
- Department of Diabetes & Cancer Metabolism, City of Hope National Medical Center, Duarte, CA, USA
| | | | - Eric Verdin
- Buck Institute for Research on Aging, Novato, CA, USA.
- UCSF Department of Medicine, San Francisco, CA, USA.
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40
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Hall BM, Gleiberman AS, Strom E, Krasnov PA, Frescas D, Vujcic S, Leontieva OV, Antoch MP, Kogan V, Koman IE, Zhu Y, Tchkonia T, Kirkland JL, Chernova OB, Gudkov AV. Immune checkpoint protein VSIG4 as a biomarker of aging in murine adipose tissue. Aging Cell 2020; 19:e13219. [PMID: 32856419 PMCID: PMC7576241 DOI: 10.1111/acel.13219] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 05/26/2020] [Accepted: 07/03/2020] [Indexed: 12/20/2022] Open
Abstract
Adipose tissue is recognized as a major source of systemic inflammation with age, driving age-related tissue dysfunction and pathogenesis. Macrophages (Mφ) are central to these changes yet adipose tissue Mφ (ATMs) from aged mice remain poorly characterized. To identify biomarkers underlying changes in aged adipose tissue, we performed an unbiased RNA-seq analysis of ATMs from young (8-week-old) and healthy aged (80-week-old) mice. One of the genes identified, V-set immunoglobulin-domain-containing 4 (VSIG4/CRIg), encodes a Mφ-associated complement receptor and B7 family-related immune checkpoint protein. Here, we demonstrate that Vsig4 expression is highly upregulated with age in perigonadal white adipose tissue (gWAT) in two mouse strains (inbred C57BL/6J and outbred NIH Swiss) independent of gender. The accumulation of VSIG4 was mainly attributed to a fourfold increase in the proportion of VSIG4+ ATMs (13%-52%). In a longitudinal study, VSIG4 expression in gWAT showed a strong correlation with age within a cohort of male and female mice and correlated strongly with physiological frailty index (PFI, a multi-parameter assessment of health) in male mice. Our results indicate that VSIG4 is a novel biomarker of aged murine ATMs. VSIG4 expression was also found to be elevated in other aging tissues (e.g., thymus) and was strongly induced in tumor-adjacent stroma in cases of spontaneous and xenograft lung cancer models. VSIG4 expression was recently associated with cancer and several inflammatory diseases with diagnostic and prognostic potential in both mice and humans. Further investigation is required to determine whether VSIG4-positive Mφ contribute to immunosenescence and/or systemic age-related deficits.
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Affiliation(s)
| | | | | | | | | | | | - Olga V. Leontieva
- Department of Pharmacology and TherapeuticsRoswell Park Comprehensive Cancer CenterBuffaloNYUSA
| | - Marina P. Antoch
- Department of Pharmacology and TherapeuticsRoswell Park Comprehensive Cancer CenterBuffaloNYUSA
| | - Valeria Kogan
- Institute for Translational ResearchAriel UniversityArielIsrael
| | - Igor E. Koman
- Institute for Translational ResearchAriel UniversityArielIsrael
| | - Yi Zhu
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | | | | | - Andrei V. Gudkov
- Everon Biosciences IncBuffaloNYUSA
- Department of Cell Stress BiologyRoswell Park Comprehensive Cancer CenterBuffaloNYUSA
- Genome Protection IncBuffaloNYUSA
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41
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Delaney KZ, Dam V, Murphy J, Morais JA, Denis R, Atlas H, Pescarus R, Garneau PY, Santosa S. A reliable, reproducible flow cytometry protocol for immune cell quantification in human adipose tissue. Anal Biochem 2020; 613:113951. [PMID: 32926866 DOI: 10.1016/j.ab.2020.113951] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 01/28/2023]
Abstract
The ability to accurately identify and quantify immune cell populations within adipose tissue is important in understanding the role of immune cells in metabolic disease risk. Flow cytometry is the gold standard method for immune cell quantification. However, quantification of immune cells from adipose tissue presents a number of challenges because of the complexities of working with an oily substance and the rapid deterioration of immune cell viability before analysis can be performed. Here we present a highly reproducible flow cytometry protocol for the quantification of immune cells in human adipose tissue, which overcomes these issues.
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Affiliation(s)
- Kerri Z Delaney
- Department of Health, Kinesiology, and Applied Physiology, Concordia University, 7141 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Metabolism, Obesity, Nutrition Lab, PERFORM Centre, Concordia University, 7200 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Centre de Recherche - Axe Maladies Chroniques, Centre Intégré Universitaire de Santé et de Services Sociaux Du Nord-de-l'Ile-de-Montreal, Hôpital Du Sacré-Coeur de Montreal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - Vi Dam
- Department of Health, Kinesiology, and Applied Physiology, Concordia University, 7141 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Metabolism, Obesity, Nutrition Lab, PERFORM Centre, Concordia University, 7200 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Centre de Recherche - Axe Maladies Chroniques, Centre Intégré Universitaire de Santé et de Services Sociaux Du Nord-de-l'Ile-de-Montreal, Hôpital Du Sacré-Coeur de Montreal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - Jessica Murphy
- Department of Health, Kinesiology, and Applied Physiology, Concordia University, 7141 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Metabolism, Obesity, Nutrition Lab, PERFORM Centre, Concordia University, 7200 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Centre de Recherche - Axe Maladies Chroniques, Centre Intégré Universitaire de Santé et de Services Sociaux Du Nord-de-l'Ile-de-Montreal, Hôpital Du Sacré-Coeur de Montreal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - José A Morais
- Department of Health, Kinesiology, and Applied Physiology, Concordia University, 7141 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Division of Geriatric Medicine, McGill University Health Centre - Royal Victoria Hospital, 1001, Décarie, Montreal, Québec, H4A 3J1, Canada
| | - Ronald Denis
- Departement Du Chirurgie, Hôpital Du Sacré-Coeur de Montréal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - Henri Atlas
- Departement Du Chirurgie, Hôpital Du Sacré-Coeur de Montréal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - Radu Pescarus
- Departement Du Chirurgie, Hôpital Du Sacré-Coeur de Montréal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - Pierre Y Garneau
- Departement Du Chirurgie, Hôpital Du Sacré-Coeur de Montréal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada
| | - Sylvia Santosa
- Department of Health, Kinesiology, and Applied Physiology, Concordia University, 7141 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Metabolism, Obesity, Nutrition Lab, PERFORM Centre, Concordia University, 7200 Sherbrooke St W, Montreal, QC, H4B 1R6, Canada; Centre de Recherche - Axe Maladies Chroniques, Centre Intégré Universitaire de Santé et de Services Sociaux Du Nord-de-l'Ile-de-Montreal, Hôpital Du Sacré-Coeur de Montreal, 5400 Boul Gouin O, Montréal, QC, H4J 1C5, Canada.
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42
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Wu B, Chiang HC, Sun X, Yuan B, Mitra P, Hu Y, Curiel TJ, Li R. Genetic ablation of adipocyte PD-L1 reduces tumor growth but accentuates obesity-associated inflammation. J Immunother Cancer 2020; 8:e000964. [PMID: 32817394 PMCID: PMC7437875 DOI: 10.1136/jitc-2020-000964] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2020] [Indexed: 12/16/2022] Open
Abstract
The programmed death-ligand 1 (PD-L1)-dependent immune checkpoint attenuates host immunity and maintains self-tolerance. Imbalance between protective immunity and immunopathology due to altered PD-L1 signaling can lead to autoimmunity or tumor immunosuppression. The role of the PD-L1-dependent checkpoint in non-immune system is less reported. We previously found that white adipocytes highly express PD-L1. Here we show that adipocyte-specific PD-L1 knockout mice exhibit enhanced host anti-tumor immunity against mammary tumors and melanoma with low or no tumor PD-L1. However, adipocyte PD-L1 ablation in tumor-free mice also exacerbates diet-induced body weight gain, pro-inflammatory macrophage infiltration into adipose tissue, and insulin resistance. Low PD-L1 mRNA levels in human adipose tissue correlate with high body mass index and presence of type 2 diabetes. Therefore, our mouse genetic approach unequivocally demonstrates a cell-autonomous function of adipocyte PD-L1 in promoting tumor growth and inhibiting antitumor immunity. In addition, our work uncovers a previously unrecognized role of adipocyte PD-L1 in mitigating obesity-related inflammation and metabolic dysfunction.
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Affiliation(s)
- Bogang Wu
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
| | - Huai-Chin Chiang
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
| | - Xiujie Sun
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
| | - Bin Yuan
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
| | - Payal Mitra
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
| | - Yanfen Hu
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
| | - Tyler J Curiel
- Department of Medicine, Long School of Medicine, UT Health San Antonio, San Antonio, Texas, USA
| | - Rong Li
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, District of Columbia, USA
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43
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Zhao XY, Zhou L, Chen Z, Ji Y, Peng X, Qi L, Li S, Lin JD. The obesity-induced adipokine sST2 exacerbates adipose T reg and ILC2 depletion and promotes insulin resistance. SCIENCE ADVANCES 2020; 6:eaay6191. [PMID: 32426492 PMCID: PMC7220368 DOI: 10.1126/sciadv.aay6191] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 03/02/2020] [Indexed: 05/02/2023]
Abstract
Depletion of fat-resident regulatory T cells (Tregs) and group 2 innate lymphoid cells (ILC2s) has been causally linked to obesity-associated insulin resistance. However, the molecular nature of the pathogenic signals suppress adipose Tregs and ILC2s in obesity remains unknown. Here, we identified the soluble isoform of interleukin (IL)-33 receptor ST2 (sST2) as an obesity-induced adipokine that attenuates IL-33 signaling and disrupts Treg/ILC2 homeostasis in adipose tissue, thereby exacerbates obesity-associated insulin resistance in mice. We demonstrated sST2 is a target of TNFα signaling in adipocytes that is countered by Zbtb7b. Fat-specific ablation of Zbtb7b augments adipose sST2 gene expression, leading to diminished fat-resident Tregs/ILC2s, more pronounced adipose tissue inflammation and fibrosis, and impaired glucose homeostasis in mice. Mechanistically, Zbtb7b suppresses NF-κB activation in response to TNFα through destabilizing IκBα. These findings uncover an adipokine-immune signaling pathway that is engaged in obesity to drive the pathological changes of the immunometabolic landscape.
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Affiliation(s)
- Xu-Yun Zhao
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
- Corresponding author. (J.D.L.); (X.-Y.Z.)
| | - Linkang Zhou
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Zhimin Chen
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Yewei Ji
- Department of Molecular and Integrative Physiology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Xiaoling Peng
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Ling Qi
- Department of Molecular and Integrative Physiology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Siming Li
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Jiandie D. Lin
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
- Corresponding author. (J.D.L.); (X.-Y.Z.)
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44
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Chakraborty A, Scogin CK, Rizwan K, Morley TS, Rutkowski JM. Characterizing Lymphangiogenesis and Concurrent Inflammation in Adipose Tissue in Response to VEGF-D. Front Physiol 2020; 11:363. [PMID: 32390866 PMCID: PMC7188984 DOI: 10.3389/fphys.2020.00363] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 03/30/2020] [Indexed: 12/16/2022] Open
Abstract
The metabolic consequences of obesity arise from local inflammation within expanding adipose tissue. In pre-clinical studies targeting various inflammatory factors, systemic metabolism can be improved through reduced adipose inflammation. Lymphatic vessels are a critical regulator of inflammation through roles in fluid and macromolecule transport and immune cell trafficking and immunomodulation. Lymphangiogenesis, the expansion of the lymphatic network, is often a necessary step in restoring tissue homeostasis. Using Adipo-VD mice, a model of adipocyte-specific, inducible overexpression of the potent lymphangiogenic factor vascular endothelial growth factor-D (VEGF-D), we previously identified that dense de novo adipose lymphatics reduced immune accumulation and improved glucose homeostasis in obesity. On chow diet, however, Adipo-VD mice demonstrated increased adipose tissue immune cells, fibrosis, and inflammation. Here, we characterize the time course of resident macrophage accumulation and lymphangiogenesis in male and female Adipo-VD mice fed chow and high fat diets, examining multiple adipose depots over 4 months. We find that macrophage infiltration occurs early, but resolves with concurrent lymphatic expansion that begins robustly after 1 month of VEGF-D overexpression in white adipose tissue. In obesity, female Adipo-VD mice exhibit reduced lymphangiogenesis and maintain a more glycolytic metabolism compared to Adipo-VD males and their littermates. Adipose lymphatic structures appear to expand by a lymphvasculogenic mechanism involving lymphatic endothelial cell proliferation and organization with a cell source we that failed to identify; hematopoietic cells afford minimal structural contribution. While a net positive effect occurs in Adipo-VD mice, adipose tissue lymphangiogenesis demonstrates a dichotomous, and time-dependent, inflammatory tissue remodeling response.
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Affiliation(s)
- Adri Chakraborty
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M University College of Medicine, Bryan, TX, United States
| | - Caroline K Scogin
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M University College of Medicine, Bryan, TX, United States
| | - Kinza Rizwan
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M University College of Medicine, Bryan, TX, United States
| | - Thomas S Morley
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Joseph M Rutkowski
- Division of Lymphatic Biology, Department of Medical Physiology, Texas A&M University College of Medicine, Bryan, TX, United States
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Motoyama S, Yamada H, Yamamoto K, Wakana N, Terada K, Kikai M, Wada N, Saburi M, Sugimoto T, Kubota H, Miyawaki D, Kami D, Ogata T, Ibi M, Yabe-Nishimura C, Matoba S. Social Stress Increases Vulnerability to High-Fat Diet-Induced Insulin Resistance by Enhancing Neutrophil Elastase Activity in Adipose Tissue. Cells 2020; 9:cells9040996. [PMID: 32316265 PMCID: PMC7226953 DOI: 10.3390/cells9040996] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/11/2020] [Accepted: 04/15/2020] [Indexed: 12/16/2022] Open
Abstract
Social stress (SS) has been linked to the development of cardiovascular disease (CVD), which is closely associated with insulin resistance (IR); however, the causal effect of SS on IR remains unclear. The 8-week-old male C57BL/6 mice were exposed to SS by housing with a larger CD-1 mouse in a shared home cage without physical contact for 10 consecutive days followed by high-fat diet (HFD) feeding. Control mice were housed in the same cage without a CD-1 mouse. After 6 weeks of HFD, insulin sensitivity was significantly impaired in stressed mice. While the percentage of classically activated macrophages in epididymal white adipose tissue (eWAT) was equivalent between the two groups, the percentage of lymphocyte antigen 6 complex locus G6D (Ly-6G)/neutrophil elastase (NE)-double positive cells markedly increased in stressed mice, accompanied by augmented NE activity assessed by ex vivo eWAT fluorescent imaging. Treatment with an NE inhibitor completely abrogated the insulin sensitivity impairment of stressed mice. In vitro NE release upon stimulation with a formyl peptide receptor 1 agonist was significantly higher in bone marrow neutrophils of stressed mice. Our findings show that SS-exposed mice are susceptible to the development of HFD-induced IR accompanied by augmented NE activity. Modulation of neutrophil function may represent a potential therapeutic target for SS-associated IR.
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Affiliation(s)
- Shinichiro Motoyama
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Hiroyuki Yamada
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
- Correspondence: ; Tel.: +81-75-251-5511
| | - Keita Yamamoto
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Noriyuki Wakana
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Kensuke Terada
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Masakazu Kikai
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Naotoshi Wada
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Makoto Saburi
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Takeshi Sugimoto
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Hiroshi Kubota
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Daisuke Miyawaki
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Daisuke Kami
- Department of Regenerative Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Takehiro Ogata
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Masakazu Ibi
- Department of Pharmacology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Chihiro Yabe-Nishimura
- Department of Pharmacology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Satoaki Matoba
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
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46
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Wada N, Yamada H, Motoyama S, Saburi M, Sugimoto T, Kubota H, Miyawaki D, Wakana N, Kami D, Ogata T, Matoba S. Maternal high-fat diet exaggerates diet-induced insulin resistance in adult offspring by enhancing inflammasome activation through noncanonical pathway of caspase-11. Mol Metab 2020; 37:100988. [PMID: 32272237 PMCID: PMC7210595 DOI: 10.1016/j.molmet.2020.100988] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/22/2020] [Accepted: 03/31/2020] [Indexed: 02/06/2023] Open
Abstract
Objective Maternal high-fat diet (HFD) has been shown to promote the development of insulin resistance (IR) in adult offspring; however, the underlying mechanisms remain unclear. Methods Eight-week-old female wild-type mice (C57BL/6) were fed either an HFD or a normal diet (ND), one week prior to mating, and the diet was continued throughout gestation and lactation. Eight-week-old male offspring of both groups were fed an HFD for 8 weeks. Results Offspring of HFD-fed dams (O-HFD) exhibited significantly impaired insulin sensitivity compared with the offspring of ND-fed dams (O-ND). The adipocyte size of the eWAT increased significantly in O-HFD and was accompanied by abundant crown-like structures (CLSs), as well as a higher concentration of interleukin 1β (IL-1β) in the eWAT. Treatment with an inflammasome inhibitor, MCC950, completely abrogated the enhanced IR in O-HFD. However, ex vivo caspase-1 activity in eWAT revealed no difference between the two groups. In contrast, noncanonical inflammasome activation of caspase-11 was significantly augmented in O-HFD compared with O-ND, suggesting that membrane pore formation, but not cleavage of pro-IL-1β by caspase-1, is augmented in O-HFD. To examine the membrane pore formation, we performed metabolic activation of bone marrow-derived macrophages (BMDMs). The percentage of pore formation assessed by ethidium bromide staining was significantly higher in BMDMs of O-HFD, accompanied by an enhanced active caspase-11 expression. Consistently, the concentration of IL-1β in culture supernatants was significantly higher in the BMDMs from O-HFD than those from O-ND. Conclusions These findings demonstrate that maternal HFD exaggerates diet-induced IR in adult offspring by enhancing noncanonical caspase-11-mediated inflammasome activation. Maternal HFD increases the vulnerability to HFD-induced IR in adult offspring. Maternal HFD augments inflammasome activation in eWAT in adult offspring. Treatment with an inflammasome inhibitor abrogates IR in offspring of HFD-fed dam. Maternal HFD augments the noncanonical inflammasome activation pathway of caspase-11. Maternal HFD augments IL-1β release from BMDMs by enhancing membrane pore formation.
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Affiliation(s)
- Naotoshi Wada
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroyuki Yamada
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
| | - Shinichiro Motoyama
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Makoto Saburi
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Sugimoto
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroshi Kubota
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Daisuke Miyawaki
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Noriyuki Wakana
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Daisuke Kami
- Department of Regenerative Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takehiro Ogata
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoaki Matoba
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Porsche CE, Delproposto JB, Patrick E, Zamarron BF, Lumeng CN. Adipose tissue dendritic cell signals are required to maintain T cell homeostasis and obesity-induced expansion. Mol Cell Endocrinol 2020; 505:110740. [PMID: 31987897 PMCID: PMC7197735 DOI: 10.1016/j.mce.2020.110740] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/22/2020] [Accepted: 01/22/2020] [Indexed: 02/06/2023]
Abstract
Adipose tissue derived chronic inflammation is a critical component of obesity induced type II diabetes. Major histocompatibility complex II (MHCII) mediated T cell activation within adipose tissue is one mechanism that contributes to this phenotype. However, the contribution of dendritic cells as professional antigen presenting cells in adipose issue has not previously been explored. Using ItgaxCre x MHCIIfl/fl (M11cKO) mice we observed adipose tissue specific changes in adipose tissue leukocytes. While there was a complete knockout of MHCII in dendritic cells, MHCII was also absent on the majority of macrophages. This resulted in reduction of TCR expression in CD4+ T cells in obese adipose tissue, and an increase in CD8+ and CD4+ CD8+ double positive T cells with decreased CD4+ T cells independent of diet type. Increased CD8+ cells were not observed in the spleen, suggesting adipose tissue T cell regulation is tissue specific. In vitro studies demonstrated more potent antigen presentation function in adipose tissue dendritic cells compared to macrophages. Obese M11cKO mice had decreased CD11c+ adipose tissue macrophages. Despite the changes of immune cellularity in adipose tissue, M11cKO largely did not change inflammatory gene expression in adipose tissue and did not demonstrate differences in glucose and insulin intolerance. Overall MHCII expression on CD11c+ cells is important for maintaining CD4+ and CD8+ adipose tissue T cells, but these cellular changes fail to alter inflammatory output and systemic metabolism.
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Affiliation(s)
- Cara E Porsche
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer B Delproposto
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Elise Patrick
- College of Literature Sciences and Arts, University of Michigan, Ann Arbor, USA
| | - Brian F Zamarron
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Carey N Lumeng
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI, USA.
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48
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Russo L, Muir L, Geletka L, Delproposto J, Baker N, Flesher C, O'Rourke R, Lumeng CN. Cholesterol 25-hydroxylase (CH25H) as a promoter of adipose tissue inflammation in obesity and diabetes. Mol Metab 2020; 39:100983. [PMID: 32229247 PMCID: PMC7267735 DOI: 10.1016/j.molmet.2020.100983] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/09/2020] [Accepted: 03/20/2020] [Indexed: 12/20/2022] Open
Abstract
Objective Expansion of visceral adipose tissue (VAT) and metabolic inflammation are consequences of obesity and associated with type 2 diabetes (T2DM). Metabolically activated adipose tissue macrophages (ATMs) undergo qualitative and quantitative changes that influence their inflammatory responses. How these cells contribute to insulin resistance (IR) in humans is not well understood. Cholesterol 25-Hydroxylase (CH25H) converts cholesterol into 25-Hydroxycholesterol (25-HC), an oxysterol that modulates immune responses. Using human and murine models, we investigated the role of CH25H in metabolic inflammation. Methods We performed transcriptomic (RNASeq) analysis on the human whole AT biopsies and sorted ATMs from obese non-diabetic (NDM) and obese diabetic (DM) subjects to inquire if CH25H was increased in DM. We challenged mice lacking Ch25h with a high-fat diet (HFD) to characterize their metabolic and immunologic profiling. Ch25h KO mice and human adipose tissue biopsies from NDM and DM subjects were analyzed. LC-MS was conducted to measure 25-HC level in AT. In vitro analysis permitted us to investigate the effect of 25-HC on cytokine expression. Results In our RNASeq analysis of human visceral and subcutaneous biopsies, gene pathways related to inflammation were increased in obese DM vs. non-DM subjects that included CH25H. CH25H was enriched in the stromal vascular fraction of human adipose tissue and highly expressed in CD206+ human ATMs by flow cytometry analysis. We measured the levels of the oxysterols, 25-HC and 7α25diHC, in human visceral adipose tissue samples and showed a correlation between BMI and 25-HC. Using mouse models of diet-induced obesity (DIO), we found that HFD-induced Ch25h expression in eWAT and increased levels of 25-HC in AT. On HFD, Ch25h KO mice became obese but exhibited reduced plasma insulin levels, improved insulin action, and decreased ectopic lipid deposit. Improved insulin sensitivity in Ch25h KO mice was due to attenuation of CD11c+ adipose tissue macrophage infiltration in eWAT. Finally, by testing AT explants, bone marrow-derived macrophages (BMDMs) and SVF cells from Ch25h deficient mice, we observed that 25-HC is required for the expression of pro-inflammatory genes. 25-HC was also able to induce inflammatory genes in preadipocytes. Conclusions Our data suggest a critical role for CH25H/25-HC in the progression of meta-inflammation and insulin resistance in obese humans and mouse models of obesity. In response to obesogenic stimuli, CH25H/25-HC could exert a pro-inflammatory role. CH25H upregulation in visceral adipose tissue is associated with diabetes in humans. ATMs are the primary site of CH25H expression in humans and mice. DIO in mice activates Ch25h expression and 25-HC production in visceral adipose tissue. Obese Ch25h KO mice have improved insulin sensitivity due to attenuated adipose tissue inflammation. In response to inflammatory stimuli, Ch25h/25-HC potentiates myeloid activation.
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Affiliation(s)
- Lucia Russo
- Department of Pediatrics, Division of Pulmonary Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Lindsey Muir
- Department of Pediatrics, Division of Pulmonary Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Lynn Geletka
- Department of Pediatrics, Division of Pulmonary Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Jennifer Delproposto
- Department of Pediatrics, Division of Pulmonary Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Nicki Baker
- Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Carmen Flesher
- Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Robert O'Rourke
- Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Carey N Lumeng
- Department of Pediatrics, Division of Pulmonary Medicine, University of Michigan Medical School, Ann Arbor, MI, United States; Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, United States.
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Han IH, Song HO, Ryu JS. IL-6 produced by prostate epithelial cells stimulated with Trichomonas vaginalis promotes proliferation of prostate cancer cells by inducing M2 polarization of THP-1-derived macrophages. PLoS Negl Trop Dis 2020; 14:e0008126. [PMID: 32196489 PMCID: PMC7138318 DOI: 10.1371/journal.pntd.0008126] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 04/07/2020] [Accepted: 02/10/2020] [Indexed: 12/12/2022] Open
Abstract
Trichomonas vaginalis (Tv), a protozoan parasite causing sexually-transmitted disease, has been detected in tissue of prostatitis, benign prostatic hyperplasia (BPH) and prostate cancer (PCa). IL-6, a mediator of chronic inflammation, induces the progression of prostate cancer, and influences the polarization of M2 macrophages, which are the main tumor-associated macrophages. We investigated whether IL-6 produced by human prostate epithelial cells stimulated with Tv induces the M2 polarization of THP-1-derived macrophages, which in turn promotes the progression of PCa. Conditioned medium was prepared from Tv-infected (TCM) and uninfected (CM) prostate epithelial cells (RWPE-1). Thereafter conditioned medium was prepared from macrophages after incubation with CM (M-CM) or TCM (M-TCM). RWPE-1 cells infected with Tv produced IL-6 and chemokines such as CCL2 and CXCL8. When human macrophages were treated with conditioned medium of RWPE-1 cells co-cultured with Tv (TCM), they became polarized to M2-like macrophages as indicated by the production of IL-10 and TGF-β, and the expression of CD36 and arginase-1, which are M2 macrophage markers. Moreover, proliferation of the M2-like macrophages was also increased by TCM. Blockade of IL-6 signaling with IL-6 receptor antibody and JAK inhibitor (Ruxolitinib) inhibited M2 polarization of THP-1-derived macrophages and proliferation of the macrophages. To assess the effect of crosstalk between macrophages and prostate epithelial cells inflamed by Tv infection on the growth of prostate cancer (PCa) cells, PC3, DU145 and LNCaP cells were treated with conditioned medium from THP-1-derived macrophages stimulated with TCM (M-TCM). Proliferation and migration of the PCa cells were significantly increased by the M-TCM. Our findings suggest that IL-6 produced in response to Tv infection of the prostate has an important effect on the tumor microenvironment by promoting progression of PCa cells following induction of M2 macrophage polarization. In male, T. vaginalis infection have been proposed to involve in several prostate diseases such as prostatitis, benign prostatic hyperplasia and prostate cancer. However, studies for these mechanisms have been rare. We have previously reported that T. vaginalis induce the production of inflammatory cytokines in prostate cells. Among these cytokines, IL-6 have been reported to play an important role in M2 macrophage polarization, which lead to formation of tumor microenvironment in various cancers. Here we show that IL-6 produced by T. vaginalis infection in prostate epithelial cells induces M2 polarization of macrophages and these macrophages promote proliferation of prostate cancer cells. These findings suggest that T. vaginalis indirectly induces progression of prostate cancer by creating a tumor microenvironment through an inflammatory response.
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Affiliation(s)
- Ik-Hwan Han
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul, Korea
| | - Hyun-Ouk Song
- Department of Parasitology, School of Medicine, Catholic University of Daegu, Daegu, Korea
| | - Jae-Sook Ryu
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul, Korea
- * E-mail:
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50
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Oliveira BM, Pinto A, Correia A, Ferreira PG, Vilanova M, Teixeira L. Characterization of Myeloid Cellular Populations in Mesenteric and Subcutaneous Adipose Tissue of Holstein-Friesian Cows. Sci Rep 2020; 10:1771. [PMID: 32019985 PMCID: PMC7000716 DOI: 10.1038/s41598-020-58678-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/17/2020] [Indexed: 12/12/2022] Open
Abstract
Immune cells resident in adipose tissue have important functions in local and systemic metabolic homeostasis. Nevertheless, these immune cell populations remain poorly characterized in bovines. Recently, we described diverse lymphocyte subpopulations in adipose tissue of Holstein-Friesian cows. Here, we aimed at characterising myeloid cell populations present in bovine adipose tissue using multicolour flow cytometry, cell sorting and histochemistry/immunohistochemistry. Macrophages, CD14+CD11b+MHC-II+CD45+ cells, were identified in mesenteric and subcutaneous adipose tissue, though at higher proportions in the latter. Mast cells, identified as SSC-AhighCD11b−/+CD14−MHC-II−CH138A−CD45+ cells, were also observed in adipose tissue and found at higher proportions than macrophages in mesenteric adipose tissue. Neutrophils, presenting a CH138A+CD11b+ phenotype, were also detected in mesenteric and subcutaneous adipose tissue, however, at much lower frequencies than in the blood. Our gating strategy allowed identification of eosinophils in blood but not in adipose tissue although being detected by morphological analysis at low frequencies in some animals. A population not expressing CD45 and with the CH138A+ CD11b−MHC-II− phenotype, was found abundant and present at higher proportions in mesenteric than subcutaneous adipose tissue. The work reported here may be useful for further studies addressing the function of the described cells.
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Affiliation(s)
- Bárbara M Oliveira
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Ana Pinto
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Alexandra Correia
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Paula G Ferreira
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Manuel Vilanova
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Luzia Teixeira
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal. .,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
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