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Kim YE, Lee JH, Lee EJ, Kim DH, Jeong MR, Hong S, Lee CK, Yoo B, Youn J, Chang EJ, Kim YG. The Expression of the Alpha7 Nicotinic Acetylcholine Receptor and the Effect of Smoking in Curdlan-Administered SKG Mice. Biomedicines 2023; 11:2757. [PMID: 37893130 PMCID: PMC10603960 DOI: 10.3390/biomedicines11102757] [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: 09/08/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Nicotine, an abundant molecule in tobacco, has immunomodulatory effects on inflammatory diseases, primarily due to the activation of alpha7 nicotinic acetylcholine receptor (α7 nAChR). We aim to evaluate the expression of the α7 nAChR+ cells in joint tissue and the effect of smoking on immune cells and peripheral arthritis in curdlan-administered SKG mice, a murine model of spondyloarthropathy (SpA). The SKG mice were injected with curdlan two times at 2-week intervals and were divided into two groups; one exposed to cigarette smoke and the other not exposed. We found that the α7 nAChR+ cells increased in the joint tissue of curdlan-administered SKG mice compared to in the wild type. Furthermore, the peripheral arthritis scores and histological scores for synovial inflammation were lower in smoke-exposed curdlan-administered SKG mice than in mice not exposed to smoke. Immunofluorescence staining of the α7 nAChR+ and IL-17A+ cells was lower in the synovia of smoke-exposed mice than the control mice. The proportions of α7 nAChR+IL-17A+ and α7 nAChR+IL-17A+FOXP3+ cells also decreased in the synovia of smoke-exposed mice compared with the controls. We observed an increase in the α7 nAChR+ cells within the joint tissue of curdlan-administered SKG mice and that cigarette smoke had an influence on both peripheral arthritis and immune cell population, especially α7 nAChR+ cells. Thus, exposure to cigarette smoke after arthritogenic stimuli may have an anti-arthritogenic effect in curdlan-administered SKG mice.
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Affiliation(s)
- Young-Eun Kim
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Jae-Hyun Lee
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Eun-Ju Lee
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Do Hoon Kim
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Mi Ryeong Jeong
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Seokchan Hong
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Chang-Keun Lee
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Bin Yoo
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Jeehee Youn
- Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul 04763, Republic of Korea;
| | - Eun-Ju Chang
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea;
| | - Yong-Gil Kim
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (Y.-E.K.); (J.-H.L.); (E.-J.L.); (D.H.K.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
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Basak M, Das K, Mahata T, Sengar AS, Verma SK, Biswas S, Bhadra K, Stewart A, Maity B. RGS7-ATF3-Tip60 Complex Promotes Hepatic Steatosis and Fibrosis by Directly Inducing TNFα. Antioxid Redox Signal 2023; 38:137-159. [PMID: 35521658 DOI: 10.1089/ars.2021.0174] [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] [Indexed: 01/27/2023]
Abstract
Aims: The pathophysiological mechanism(s) underlying non-alcoholic fatty liver disease (NAFLD) have yet to be fully delineated and only a single drug, peroxisome proliferator-activated receptor (PPAR) α/γ agonist saroglitazar, has been approved. Here, we sought to investigate the role of Regulator of G Protein Signaling 7 (RGS7) in hyperlipidemia-dependent hepatic dysfunction. Results: RGS7 is elevated in the livers of NAFLD patients, particularly those with severe hepatic damage, pronounced insulin resistance, and high inflammation. In the liver, RGS7 forms a unique complex with transcription factor ATF3 and histone acetyltransferase Tip60, which is implicated in NAFLD. The removal of domains is necessary for ATF3/Tip60 binding compromises RGS7-dependent reactive oxygen species generation and cell death. Hepatic RGS7 knockdown (KD) prevented ATF3/Tip60 induction, and it provided protection against fibrotic remodeling and inflammation in high-fat diet-fed mice translating to improvements in liver function. Hyperlipidemia-dependent oxidative stress and metabolic dysfunction were largely reversed in RGS7 KD mice. Interestingly, saroglitazar failed to prevent RGS7/ATF3 upregulation but it did partially restore Tip60 levels. RGS7 drives the release of particularly tumor necrosis factor α (TNFα) from isolated hepatocytes, stellate cells and its depletion reverses steatosis, oxidative stress by direct TNFα exposure. Conversely, RGS7 overexpression in the liver is sufficient to trigger oxidative stress in hepatocytes that can be mitigated via TNFα inhibition. Innovation: We discovered a novel non-canonical function for an R7RGS protein, which usually functions to regulate G protein coupled receptor (GPCR) signaling. This is the first demonstration for a functional role of RGS7 outside the retina and central nervous system. Conclusion: RGS7 represents a potential novel target for the amelioration of NAFLD. Antioxid. Redox Signal. 38, 137-159.
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Affiliation(s)
| | - Kiran Das
- Centre of Biomedical Research, Lucknow, India
| | | | | | | | - Sayan Biswas
- Department of Forensic Medicine, College of Medicine and Sagore Dutta Hospital, Kolkata, India
| | - Kakali Bhadra
- Department of Zoology, University of Kalyani, Kalyani, India
| | - Adele Stewart
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Jupiter, Florida, USA
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Atas N, Çakır B, Bakır F, Uçar M, Satış H, Güz GT, Demirel KD, Babaoğlu H, Salman RB, Güler AA, Karadeniz H, Haznedaroğlu Ş, Göker B, Öztürk MA, Tufan A. The impact of anti-TNF treatment on Wnt signaling, noggin, and cytokine levels in axial spondyloarthritis. Clin Rheumatol 2022; 41:1381-1389. [DOI: 10.1007/s10067-022-06070-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 12/20/2021] [Accepted: 01/16/2022] [Indexed: 11/27/2022]
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Lim DH, Lee EJ, Lee HS, Kim DH, Lee JH, Jeong MR, Hong S, Lee CK, Yoo B, Youn J, Kim YG. Acetylated Diacylglycerol 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol in Autoimmune Arthritis and Interstitial Lung Disease in SKG Mice. Biomedicines 2021; 9:1095. [PMID: 34572282 PMCID: PMC8465505 DOI: 10.3390/biomedicines9091095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/22/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Acetylated diacylglycerol 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG) is a lipid molecule from the antlers of sika deer that might reduce inflammation by effectively controlling neutrophil infiltration, endothelial permeability and inflammatory chemokine production. Therefore, we evaluated the modulatory effect of PLAG on arthritis and interstitial lung disease (ILD) in an autoimmune arthritis model. We injected curdlan into SKG mice and PLAG was orally administered every day from 3 weeks to 20 weeks after the curdlan injection. The arthritis score was measured every week after the curdlan injection. At 20 weeks post-injection, the lung specimens were evaluated with H&E, Masson's trichrome and multiplexed immunofluorescent staining. Serum cytokines were also analyzed using a Luminex multiple cytokine assay. PLAG administration decreased the arthritis score until 8 weeks after the curdlan injection. However, the effect was not sustained thereafter. A lung histology revealed severe inflammation and fibrosis in the curdlan-induced SKG mice, which was attenuated in the PLAG-treated mice. Furthermore, immunofluorescent staining of the lung tissue showed a GM-CSF+ neutrophil accumulation and a decreased citrullinated histone 3 expression after PLAG treatment. PLAG also downregulated the levels of IL-6 and TNF-α and upregulated the level of sIL-7Rα, an anti-fibrotic molecule. Our results indicate that PLAG might have a preventative effect on ILD development through the resolution of NETosis in the lung.
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Affiliation(s)
- Doo-Ho Lim
- Division of Rheumatology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea;
| | - Eun-Ju Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea;
| | - Hee-Seop Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA;
| | - Do Hoon Kim
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Jae-Hyun Lee
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Mi Ryeong Jeong
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Seokchan Hong
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Chang-Keun Lee
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Bin Yoo
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
| | - Jeehee Youn
- Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul 04763, Korea;
| | - Yong-Gil Kim
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (D.H.K.); (J.-H.L.); (M.R.J.); (S.H.); (C.-K.L.); (B.Y.)
- Convergence Medicine Research Center, Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Korea
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Jo S, Lee EJ, Nam B, Kang J, Lee S, Youn J, Park YS, Kim YG, Kim TH. Effects of dihydrotestosterone on osteoblast activity in curdlan-administered SKG mice and osteoprogenitor cells in patients with ankylosing spondylitis. Arthritis Res Ther 2020; 22:121. [PMID: 32448352 PMCID: PMC7245802 DOI: 10.1186/s13075-020-02217-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 05/12/2020] [Indexed: 12/15/2022] Open
Abstract
Background Ankylosing spondylitis (AS) is characteristically male-predominant, and progressive spinal ankylosis affects male patients more severely; however, the hormonal effects in males with AS are poorly understood. Methods In the present study, the regulatory effects of dutasteride, a 5-α reductase inhibitor that blocks the conversion of testosterone to dihydrotestosterone (DHT), were examined in curdlan-administered male SKG mice to determine spinal bone formation, bone metabolism-related markers, and interleukin (IL)-17A cytokine and T cell populations. In addition, the effects of DHT on primary osteoprogenitors from the facet joints of AS patients were assessed based on osteoblast-related parameters. DHT level was measured, and the correlation with modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) was analyzed in AS patients. Results In curdlan-administered SKG mice, dutasteride treatment resulted in an increased accumulation of hydroxyapatite in the spine which was positively correlated with serum IL-17A levels. In the analysis of bone metabolism-related molecules, a decrease in sclerostin levels was observed in the sera in the dutasteride group. Continuous exposure to DHT resulted in fewer calcium deposits in AS osteoprogenitors during osteoblast differentiation. DHT-treated AS osteoprogenitors showed decreased osteocalcin and increased DKK1 and SOST1 mRNA expression, supporting the results of the in vivo experiments. Treatment with dutasteride upregulated bone formation in the spine of curdlan-administered SKG mice and DHT treatment downregulated osteoblast differentiation in vitro. Conclusions Treatment with dutasteride affected the bone formation in the spine of curdlan-treated SKG mice, and DHT treatment attenuated osteoblast differentiation in vitro. Therefore, contrary to what could be expected if osteoblasts contributed to spinal ankylosis, DHT inhibition might increase rather than decrease the progression of spinal ankylosis despite the higher levels of DHT observed in many AS patients.
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Affiliation(s)
- Sungsin Jo
- Hanyang University Institute for Rheumatology Research, Seoul, Republic of Korea
| | - Eun-Ju Lee
- Division of Rheumatology, Department of Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Bora Nam
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Republic of Korea
| | - Juyeon Kang
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Republic of Korea
| | - Seunghun Lee
- Department of Radiology, Hanyang University Hospital, Seoul, Republic of Korea
| | - Jeehee Youn
- Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Ye-Soo Park
- Department of Orthopedic Surgery, Hanyang University Guri Hospital, Guri, Republic of Korea
| | - Yong-Gil Kim
- Division of Rheumatology, Department of Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
| | - Tae-Hwan Kim
- Hanyang University Institute for Rheumatology Research, Seoul, Republic of Korea. .,Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Republic of Korea.
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Żelechowska P, Różalska S, Wiktorska M, Brzezińska-Błaszczyk E, Agier J. Curdlan stimulates tissue mast cells to synthesize pro-inflammatory mediators, generate ROS, and migrate via Dectin-1 receptor. Cell Immunol 2020; 351:104079. [PMID: 32115182 DOI: 10.1016/j.cellimm.2020.104079] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 01/10/2023]
Abstract
Mast cells (MCs) are engaged in host defense against various pathogens as they are equipped with pattern recognition receptors (PRRs). Among PRRs expressed on MCs, there are also molecules recognizing components of the fungal cell wall, which are able to induce cellular activation and response. However, little information is available concerning the MC activation by various fungal-derived components. The aim of the study was to determine whether curdlan, a model fungal particle of β-(1,3)-glucan, can directly stimulate tissue MCs. We demonstrated that curdlan triggers MCs to initiate pro-inflammatory response as it activates these cells to synthesize essential pro-inflammatory and/or immunoregulatory factors. We also showed that curdlan serves as a potent chemoattractant for MCs and stimulates those cells to generate reactive oxygen species (ROS). Finally, we documented that curdlan induces MC response via Dectin-1. Our observations support the idea that MCs serve as important sentinels modulating immune response during fungal infection.
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Affiliation(s)
- Paulina Żelechowska
- Department of Experimental Immunology, Faculty of Health Sciences, Medical University of Lodz, 92-213 Lodz, Poland
| | - Sylwia Różalska
- Department of Industrial Microbiology and Biotechnology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Magdalena Wiktorska
- Department of Molecular Cell Mechanisms, Faculty of Health Sciences, Medical University of Lodz, 92-215 Lodz, Poland
| | - Ewa Brzezińska-Błaszczyk
- Department of Experimental Immunology, Faculty of Health Sciences, Medical University of Lodz, 92-213 Lodz, Poland.
| | - Justyna Agier
- Department of Experimental Immunology, Faculty of Health Sciences, Medical University of Lodz, 92-213 Lodz, Poland
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