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Shafiei-Jahani P, Yan S, Kazemi MH, Li X, Akbari A, Sakano K, Sakano Y, Hurrell BP, Akbari O. CB2 stimulation of adipose resident ILC2s orchestrates immune balance and ameliorates type 2 diabetes mellitus. Cell Rep 2024; 43:114434. [PMID: 38963763 PMCID: PMC11317174 DOI: 10.1016/j.celrep.2024.114434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/22/2024] [Accepted: 06/19/2024] [Indexed: 07/06/2024] Open
Abstract
Development of type 2 diabetes mellitus (T2DM) is associated with low-grade chronic type 2 inflammation and disturbance of glucose homeostasis. Group 2 innate lymphoid cells (ILC2s) play a critical role in maintaining adipose homeostasis via the production of type 2 cytokines. Here, we demonstrate that CB2, a G-protein-coupled receptor (GPCR) and member of the endocannabinoid system, is expressed on both visceral adipose tissue (VAT)-derived murine and human ILC2s. Moreover, we utilize a combination of ex vivo and in vivo approaches to explore the functional and therapeutic impacts of CB2 engagement on VAT ILC2s in a T2DM model. Our results show that CB2 stimulation of ILC2s protects against insulin-resistance onset, ameliorates glucose tolerance, and reverses established insulin resistance. Our mechanistic studies reveal that the therapeutic effects of CB2 are mediated through activation of the AKT, ERK1/2, and CREB pathways on ILC2s. The results reveal that the CB2 agonist can serve as a candidate for the prevention and treatment of T2DM.
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Affiliation(s)
- Pedram Shafiei-Jahani
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Shi Yan
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Mohammad H Kazemi
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Xin Li
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Amitis Akbari
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Kei Sakano
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Yoshihiro Sakano
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Benjamin P Hurrell
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Omid Akbari
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
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Sakano Y, Sakano K, Hurrell BP, Helou DG, Shafiei-Jahani P, Kazemi MH, Li X, Shen S, Hilser JR, Hartiala JA, Allayee H, Barbers R, Akbari O. Blocking CD226 regulates type 2 innate lymphoid cell effector function and alleviates airway hyperreactivity. J Allergy Clin Immunol 2024; 153:1406-1422.e6. [PMID: 38244725 DOI: 10.1016/j.jaci.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/19/2023] [Accepted: 01/03/2024] [Indexed: 01/22/2024]
Abstract
BACKGROUND Type 2 innate lymphoid cells (ILC2s) play a pivotal role in type 2 asthma. CD226 is a costimulatory molecule involved in various inflammatory diseases. OBJECTIVE We aimed to investigate CD226 expression and function within human and mouse ILC2s, and to assess the impact of targeting CD226 on ILC2-mediated airway hyperreactivity (AHR). METHODS We administered IL-33 intranasally to wild-type mice, followed by treatment with anti-CD226 antibody or isotype control. Pulmonary ILC2s were sorted for ex vivo analyses through RNA sequencing and flow cytometry. Next, we evaluated the effects of CD226 on AHR and lung inflammation in wild-type and Rag2-/- mice. Additionally, we compared peripheral ILC2s from healthy donors and asthmatic patients to ascertain the role of CD226 in human ILC2s. RESULTS Our findings demonstrated an inducible expression of CD226 in activated ILC2s, enhancing their cytokine secretion and effector functions. Mechanistically, CD226 alters intracellular metabolism and enhances PI3K/AKT and MAPK signal pathways. Blocking CD226 ameliorates ILC2-dependent AHR in IL-33 and Alternaria alternata-induced models. Interestingly, CD226 is expressed and inducible in human ILC2s, and its blocking reduces cytokine production. Finally, we showed that peripheral ILC2s in asthmatic patients exhibited elevated CD226 expression compared to healthy controls. CONCLUSION Our findings underscore the potential of CD226 as a novel therapeutic target in ILC2s, presenting a promising avenue for ameliorating AHR and allergic asthma.
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Affiliation(s)
- Yoshihiro Sakano
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Kei Sakano
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Benjamin P Hurrell
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Doumet Georges Helou
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Pedram Shafiei-Jahani
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Mohammad H Kazemi
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Xin Li
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Stephen Shen
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - James R Hilser
- Departments of Population & Public Health Sciences and Biochemistry & Molecular Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Jaana A Hartiala
- Departments of Population & Public Health Sciences and Biochemistry & Molecular Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Hooman Allayee
- Departments of Population & Public Health Sciences and Biochemistry & Molecular Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Richard Barbers
- Department of Clinical Medicine, Division of Pulmonary and Critical Care Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, Calif
| | - Omid Akbari
- Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif.
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Hosomi Y, Okamura T, Sakai K, Yuge H, Yoshimura T, Majima S, Okada H, Senmaru T, Ushigome E, Nakanishi N, Satoh T, Akira S, Hamaguchi M, Fukui M. IL-33 Reduces Saturated Fatty Acid Accumulation in Mouse Atherosclerotic Foci. Nutrients 2024; 16:1195. [PMID: 38674885 PMCID: PMC11054828 DOI: 10.3390/nu16081195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/14/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
The cellular and molecular mechanisms of atherosclerosis are still unclear. Type 2 innate lymphocytes (ILC2) exhibit anti-inflammatory properties and protect against atherosclerosis. This study aimed to elucidate the pathogenesis of atherosclerosis development using atherosclerosis model mice (ApoE KO mice) and mice deficient in IL-33 receptor ST2 (ApoEST2 DKO mice). Sixteen-week-old male ApoE KO and ApoEST2 DKO mice were subjected to an 8-week regimen of a high-fat, high-sucrose diet. Atherosclerotic foci were assessed histologically at the aortic valve ring. Chronic inflammation was assessed using flow cytometry and real-time polymerase chain reaction. In addition, saturated fatty acids (palmitic acid) and IL-33 were administered to human aortic endothelial cells (HAECs) to assess fatty acid metabolism. ApoEST2 DKO mice with attenuated ILC2 had significantly worse atherosclerosis than ApoE KO mice. The levels of saturated fatty acids, including palmitic acid, were significantly elevated in the arteries and serum of ApoEST2 DKO mice. Furthermore, on treating HAECs with saturated fatty acids with or without IL-33, the Oil Red O staining area significantly decreased in the IL-33-treated group compared to that in the non-treated group. IL-33 potentially prevented the accumulation of saturated fatty acids within atherosclerotic foci.
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Affiliation(s)
- Yukako Hosomi
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takuro Okamura
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Kimiko Sakai
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Hiroki Yuge
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takashi Yoshimura
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Saori Majima
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Hiroshi Okada
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takafumi Senmaru
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Emi Ushigome
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Naoko Nakanishi
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takashi Satoh
- Department of Immune Regulation, Graduate School and Faculty of Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan;
| | - Shizuo Akira
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita 565-0871, Japan;
- Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center, Osaka University, Suita 565-0871, Japan
| | - Masahide Hamaguchi
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Michiaki Fukui
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
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Cao Y, Li Y, Han W, Jia X, Zhu P, Wei B, Cong X, Wang Z. Sodium Butyrate Ameliorates Type 2 Diabetes-Related Sarcopenia Through IL-33-Independent ILC2s/IL-13/STAT3 Signaling Pathway. J Inflamm Res 2023; 16:343-358. [PMID: 36733489 PMCID: PMC9888475 DOI: 10.2147/jir.s392350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/18/2023] [Indexed: 01/28/2023] Open
Abstract
Purpose Sarcopenia has been described as a new complication of type 2 diabetes mellitus (T2DM). T2DM and sarcopenia impact each other, resulting in a variety of adverse outcomes such as frailty, disability, poor quality of life and increased mortality. Sodium butyrate (NaB) is reported to play a protective role against T2DM. The present study aimed to investigate whether NaB could ameliorate T2DM-related sarcopenia and the underlying mechanisms. Materials and Methods The male db/db mice at 7-weeks were used as T2DM-related sarcopenia animal model with C57BL/6J mice as control. Mice were grouped according to whether they received NaB orally as follows: C57BL/6J+water group, C57BL/6J+NaB group, db/db+water group, and db/db+NaB group. Then, db/db mice receiving NaB orally were administered with inhibitors of group 2 innate lymphocytes (ILC2s), anti-CD90.2 by intraperitoneal injection divided into db/db+NaB+PBS group and db/db+NaB+anti-CD90.2 group. NaB dissolved in water at 150 mM. The skeletal muscle mass was measured by dural X-ray (DXA) test. ILC2s in spleen and skeletal muscle were evaluated by flow cytometry. The expressions of IL-33, IL-13, STAT3, P-STAT3, GATA-3 and peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) were assessed by ELISA or WB. The morphology of skeletal muscle fibers was assessed by immunofluorescence staining. Results The proportion of ILC2s and the expressions of ILC2s markers IL-13 and GATA-3 were all significantly decreased in db/db mice, and these changes were improved by NaB. NaB increased the proportion of slow-twitch fibers in gastrocnemius, thus partially reversing the reduced exercise capacity of db/db mice. The expression of slow-twitch fibers marker PGC-1α induced by NaB was increased via activation of ILC2s/IL-13/STAT3 pathway. On the other way, IL-33 was not necessary for the activation of ILC2s/IL-13/STAT3 pathway. After depletion of ILC2s by anti-CD90.2, the ameliorating effect of NaB on T2DM-related sarcopenia was partially antagonized. Conclusion These results indicated that NaB could ameliorate type 2 diabetes-related sarcopenia by activating IL-33-independent ILC2s/IL-13/STAT3 signaling pathway.
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Affiliation(s)
- Yuan Cao
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, People’s Republic of China,State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Jinan, People’s Republic of China,Department of Cardiology, Qilu Hospital, Shandong University, Jinan, People’s Republic of China
| | - Yulin Li
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, People’s Republic of China,State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Jinan, People’s Republic of China,Department of Cardiology, Qilu Hospital, Shandong University, Jinan, People’s Republic of China
| | - Wenqiang Han
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, People’s Republic of China,State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Jinan, People’s Republic of China,Department of Cardiology, Qilu Hospital, Shandong University, Jinan, People’s Republic of China
| | - Xu Jia
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, People’s Republic of China,State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Jinan, People’s Republic of China,Department of Cardiology, Qilu Hospital, Shandong University, Jinan, People’s Republic of China
| | - Ping Zhu
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, People’s Republic of China,State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Jinan, People’s Republic of China,Department of Cardiology, Qilu Hospital, Shandong University, Jinan, People’s Republic of China
| | - Bin Wei
- Shandong Asia-Pacific Highvarve Organisms Science and Technology Co, Ltd, Jinan, People’s Republic of China
| | - Xiaoyan Cong
- Institute of Animal Science and Veterinary Medicine, Shandong Key Laboratory of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, People’s Republic of China,Jinan Kuoda Biotechnology Co, Ltd, Jinan, People’s Republic of China,Correspondence: Xiaoyan Cong; Zhihao Wang, Email ;
| | - Zhihao Wang
- Department of Geriatric Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
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Kolb H. Obese visceral fat tissue inflammation: from protective to detrimental? BMC Med 2022; 20:494. [PMID: 36575472 PMCID: PMC9795790 DOI: 10.1186/s12916-022-02672-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 11/21/2022] [Indexed: 12/28/2022] Open
Abstract
Obesity usually is accompanied by inflammation of fat tissue, with a prominent role of visceral fat. Chronic inflammation in obese fat tissue is of a lower grade than acute immune activation for clearing the tissue from an infectious agent. It is the loss of adipocyte metabolic homeostasis that causes activation of resident immune cells for supporting tissue functions and regaining homeostasis. Initially, the excess influx of lipids and glucose in the context of overnutrition is met by adipocyte growth and proliferation. Eventual lipid overload of hypertrophic adipocytes leads to endoplasmic reticulum stress and the secretion of a variety of signals causing increased sympathetic tone, lipolysis by adipocytes, lipid uptake by macrophages, matrix remodeling, angiogenesis, and immune cell activation. Pro-inflammatory signaling of adipocytes causes the resident immune system to release increased amounts of pro-inflammatory and other mediators resulting in enhanced tissue-protective responses. With chronic overnutrition, these protective actions are insufficient, and death of adipocytes as well as senescence of several tissue cell types is seen. This structural damage causes the expression or release of immunostimulatory cell components resulting in influx and activation of monocytes and many other immune cell types, with a contribution of stromal cells. Matrix remodeling and angiogenesis is further intensified as well as possibly detrimental fibrosis. The accumulation of senescent cells also may be detrimental via eventual spread of senescence state from affected to neighboring cells by the release of microRNA-containing vesicles. Obese visceral fat inflammation can be viewed as an initially protective response in order to cope with excess ambient nutrients and restore tissue homeostasis but may contribute to tissue damage at a later stage.
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Affiliation(s)
- Hubert Kolb
- Faculty of Medicine, University of Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany. .,West-German Centre of Diabetes and Health, Düsseldorf Catholic Hospital Group, Hohensandweg 37, 40591, Düsseldorf, Germany.
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Li J, Lv JL, Cao XY, Zhang HP, Tan YJ, Chu T, Zhao LL, Liu Z, Ren YS. Gut microbiota dysbiosis as an inflammaging condition that regulates obesity-related retinopathy and nephropathy. Front Microbiol 2022; 13:1040846. [PMID: 36406423 PMCID: PMC9666733 DOI: 10.3389/fmicb.2022.1040846] [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: 09/09/2022] [Accepted: 10/17/2022] [Indexed: 01/21/2023] Open
Abstract
Diabetes-specific microvascular disease is a leading cause of blindness, renal failure and nerve damage. Epidemiological data demonstrated that the high morbidity of T2DM occurs as a result of obesity and gradually develops into serious complications. To date, the mechanisms that underlie this observation are still ill-defined. In view of the effect of obesity on the gut microflora, Leprdb/db mice underwent antibiotic treatment and microbiota transplants to modify the gut microbiome to investigate whether microbes are involved in the development of diabetic nephropathy (DN) and/or diabetic retinopathy (DR). The mouse feces were collected for bacterial 16S ribosomal RNA gene sequencing. Cytokines including TNF-α, TGF-β1, IFN-γ, IL-1β, IL-6, IL-17A, IL-10, and VEGFA were detected by enzyme-linked immunosorbent assay (ELISA), flow cytometry, real-time PCR and immunofluorescent assay. Eyes and kidney were collected for histopathological assay. Intestinal permeability was also detected using Evans Blue. The results showed that obesity influenced metabolic variables (including fast/fed glucose, insulin, and triglyceride), retinopathy and nephropathy, and the gut microbiota. Obesity mainly reduced the ratio of Bacteroidetes/Firmicutes and influenced relative abundance of Proteobacteria, Actinobacteria, and Spirochetes. Obesity also increased intestinal permeability, metabolic endotoxemia, cytokines, and VEGFA. Microbiota transplants confirm that obesity aggravates retinopathy and nephropathy through the gut microbiota. These findings suggest that obesity exacerbates retinopathy and nephropathy by inducing gut microbiota dysbiosis, which further enhanced intestinal permeability and chronic low-grade inflammation.
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Affiliation(s)
- Jie Li
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, Binzhou Medical University, Yantai, China
| | - Jun-lin Lv
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, Binzhou Medical University, Yantai, China
| | - Xin-yue Cao
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, Binzhou Medical University, Yantai, China
| | - Hai-ping Zhang
- Endocrine and Metabolic Diseases Hospital of Shandong First Medical University, Jinan, China
| | - Yu-jun Tan
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, Binzhou Medical University, Yantai, China
| | - Ting Chu
- School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Li-li Zhao
- State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi, China
| | - Zhong Liu
- State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi, China,*Correspondence: Zhong Liu,
| | - Yu-shan Ren
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, Binzhou Medical University, Yantai, China,Yu-shan Ren,
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Ikutani M, Nakae S. Heterogeneity of Group 2 Innate Lymphoid Cells Defines Their Pleiotropic Roles in Cancer, Obesity, and Cardiovascular Diseases. Front Immunol 2022; 13:939378. [PMID: 35844571 PMCID: PMC9278653 DOI: 10.3389/fimmu.2022.939378] [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: 05/09/2022] [Accepted: 06/02/2022] [Indexed: 11/24/2022] Open
Abstract
Group 2 innate lymphoid cells (ILC2s) are typically known for their ability to respond rapidly to parasitic infections and play a pivotal role in the development of certain allergic disorders. ILC2s produce cytokines such as Interleukin (IL)-5 and IL-13 similar to the type 2 T helper (Th2) cells. Recent findings have highlighted that ILC2s, together with IL-33 and eosinophils, participate in a considerably broad range of physiological roles such as anti-tumor immunity, metabolic regulation, and vascular disorders. Therefore, the focus of the ILC2 study has been extended from conventional Th2 responses to these unexplored areas of research. However, disease outcomes accompanied by ILC2 activities are paradoxical mostly in tumor immunity requiring further investigations. Although various environmental factors that direct the development, activation, and localization of ILC2s have been studied, IL-33/ILC2/eosinophil axis is presumably central in a multitude of inflammatory conditions and has guided the research in ILC2 biology. With a particular focus on this axis, we discuss ILC2s across different diseases.
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Affiliation(s)
- Masashi Ikutani
- Laboratory of Immunology, Program of Food and AgriLife Science, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
- *Correspondence: Masashi Ikutani, ; Susumu Nakae,
| | - Susumu Nakae
- Laboratory of Immunology, Program of Food and AgriLife Science, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
- Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama, Japan
- *Correspondence: Masashi Ikutani, ; Susumu Nakae,
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Li H, Zhan H, Cheng L, Yan S, Wang L, Li Y. Imbalanced distribution of group 2 innate lymphoid cells (ILCs) and ILC precursors in peripheral blood of patients with primary biliary cholangitis. Scand J Immunol 2022; 96:e13166. [PMID: 35315090 DOI: 10.1111/sji.13166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 11/30/2022]
Abstract
Innate lymphoid cells (ILCs), a novel group of innate immune cells, play a key role in the early immune response via rapidly reacting to signals expressed by tissue-resident cells. ILCs contribute to some autoimmune diseases. We aim to investigate the proportions of circulating ILC subgroups in patients with primary biliary cholangitis (PBC). Overall, 48 patients with PBC and 24 healthy controls (HCs) were enrolled. Circulating ILCs and cytokine production were detected by flow cytometry. The proportions of total ILCs, ILC precursors (ILCPs), and ILCP/ILC2 ratio increased and that of ILC2s decreased in patients with PBC. ILC2 proportion was negatively correlated with gamma-glutamyl transpeptidase (GGT), alanine aminotransferase (ALT), and aspartate aminotransferase (AST). The proportion of ILCPs and ILCP/ILC2 ratio were positively correlated with alkaline phosphatase, GGT, ALT, and AST. ILC2 proportion was significantly decreased in the ursodeoxycholic acid (UDCA) -non-responder group compared with the UDCA-responder group, whereas the proportion of ILCPs and ILCP/ILC2 were ratio significantly increased. The proportions of CD38+ ILC2s, CD38+ ILCPs, CD45RO+ ILC2s, and CD45RO+ ILCPs were significantly higher in patients with PBC than in HCs. Levels of IL-17A producing ILCs were higher in patients with PBC than in HCs. PBC is accompanied by alterations in circulating ILCs. The proportions of ILC2s, ILCPs, and ILCP/ILC2 ratio were associated with the PBC disease activity. The proportions of ILCPs and ILCP/ILC2 ratio may reflect the UDCA treatment failure in patients with PBC. ILC2s and ILCPs from patients with PBC get activated, these cells may be involved in the pathogenesis of PBC.
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Affiliation(s)
- Haolong Li
- Department of Clinical Laboratory, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Haoting Zhan
- Department of Clinical Laboratory, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Linlin Cheng
- Department of Clinical Laboratory, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Songxin Yan
- Department of Clinical Laboratory, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Li Wang
- Department of Rheumatology, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yongzhe Li
- Department of Clinical Laboratory, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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Chan PC, Hsieh PS. The Chemokine Systems at the Crossroads of Inflammation and Energy Metabolism in the Development of Obesity. Int J Mol Sci 2021; 22:ijms222413528. [PMID: 34948325 PMCID: PMC8709111 DOI: 10.3390/ijms222413528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/11/2021] [Accepted: 12/13/2021] [Indexed: 12/16/2022] Open
Abstract
Obesity is characterized as a complex and multifactorial excess accretion of adipose tissue accompanied with alterations in the immune and metabolic responses. Although the chemokine systems have been documented to be involved in the control of tissue inflammation and metabolism, the dual role of chemokines and chemokine receptors in the pathogenesis of the inflammatory milieu and dysregulated energy metabolism in obesity remains elusive. The objective of this review is to present an update on the link between chemokines and obesity-related inflammation and metabolism dysregulation under the light of recent knowledge, which may present important therapeutic targets that could control obesity-associated immune and metabolic disorders and chronic complications in the near future. In addition, the cellular and molecular mechanisms of chemokines and chemokine receptors including the potential effect of post-translational modification of chemokines in the regulation of inflammation and energy metabolism will be discussed in this review.
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Affiliation(s)
- Pei-Chi Chan
- National Defense Medical Center (NDMC), Department of Physiology & Biophysics, Taipei 114, Taiwan;
| | - Po-Shiuan Hsieh
- National Defense Medical Center (NDMC), Department of Physiology & Biophysics, Taipei 114, Taiwan;
- Graduate Institute of Medical Science, NDMC, Taipei 114, Taiwan
- Department of Medical Research, Tri-Service General Hospital, Taipei 114, Taiwan
- Correspondence: ; Tel.: +886-2-87923100 (ext. 18622); Fax: +886-2-87924827
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