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Zhao G, Wang X, Lei H, Ruan N, Yuan B, Tang S, Ni N, Zuo Z, Xun L, Luo M, Zhao Q, Qi J, Fu P. Serum HMGB-1 released by ferroptosis and necroptosis as a novel potential biomarker for systemic lupus erythematosus. Int Immunopharmacol 2024; 140:112886. [PMID: 39128419 DOI: 10.1016/j.intimp.2024.112886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/16/2024] [Accepted: 08/04/2024] [Indexed: 08/13/2024]
Abstract
High mobility group box proterin-1 (HMGB-1) is a multifunctional protein that can be released by various programmed cell deaths (PCDs), such as necroptosis and ferroptosis. PCDs play a critical role in the pathogenesis of systemic lupus erythematosus (SLE). However, the role of HMGB-1 in the process of SLE remains unclear. This study aims to demonstrate the potential diagnosing role of serum HMGB-1 in SLE that released by necroptosis and ferroptosis. We found that the serum levels of HMGB-1, receptor-interacting protein kinase 3 (RIPK3) /mixed lineage kinase domain-like protein (MLKL) related with necroptosis, and metabolites associated with ferroptosis were significantly upregulated in SLE patients compared to HC individuals. These serum levels were positively correlated with SLE disease activity. Additionally, the serum level of HMGB-1 showed a strong positive correlated with the levels of RIPK3/MLKL and ferroptosis metabolites. Moreover, the serum level of HMGB-1 was correlated with renal involvement and high-antinuclear antibodies (ANA) titer. After SLE serum and interferon γ (IFN-γ) treatment in vitro, the level of necroptosis and ferroptosis markers were activated and HMGB1 was released both in HEK293 and HK2 cells. Clinically, HMGB-1 was considered as a significant independent risk factor in SLE serum by binary logistic assay. Notably, HMGB-1 exhibited outstanding diagnostic ability for SLE by the area under the curve (AUC) in receiver operating characteristic (ROC) curve analysis. Taken together, our study indicates that the serum level of HMGB-1 is a promising biomarker for the diagnosis and monitoring of SLE.
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Affiliation(s)
- Guowang Zhao
- Department of Rheumatology and Clinical Immunology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunming 650101, China
| | - Xingzi Wang
- Department of Nephrology, Yueyang Central Hospital, Hunan Province, Yueyang 414000, China
| | - Hongtao Lei
- School of Public Health, Kunming Medical University, Yunnan Province, Kunmin 650500, China
| | - Ni Ruan
- Department of Rheumatology and Clinical Immunology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunming 650101, China
| | - Bo Yuan
- Department of organ transplantation department, The First Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunmin 650033, China
| | - Songbiao Tang
- Department of Rheumatology, Yueyang Central Hospital, Hunan Province, Yueyang 414000, China
| | - Nan Ni
- Department of Rheumatology and Clinical Immunology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunming 650101, China
| | - Zan Zuo
- Department of Gastroenterology, First People's Hospital of Yunnan Province, Yunnan Province, Kunming 650033, China
| | - Linting Xun
- Department of Gastroenterology, First People's Hospital of Yunnan Province, Yunnan Province, Kunming 650033, China
| | - Mei Luo
- Department of Gastroenterology, First People's Hospital of Yunnan Province, Yunnan Province, Kunming 650033, China
| | - Qiuyan Zhao
- Department of Gastroenterology, First People's Hospital of Qujing, Yunnan Province, Qujing, China.
| | - Jialong Qi
- Department of Gastroenterology, First People's Hospital of Yunnan Province, Yunnan Province, Kunming 650033, China; Yunnan Provincial Key Laboratory of Clinical Virology, The First People's Hospital of Yunnan Province, Kunming, Yunnan,650032, China; Yunnan Provincial Key Laboratory of Birth Defects and Genetic Diseases, First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China; Yunnan Clinical Research Center for Geriatric Disorders, The First People's Hospital of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan, 650032, China.
| | - Ping Fu
- Department of Rheumatology and Clinical Immunology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunming 650101, China.
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Yang Y, Ren C, Xu X, Yang X, Shao W. Decoding the connection between SLE and DNA Sensors: A comprehensive review. Int Immunopharmacol 2024; 137:112446. [PMID: 38878488 DOI: 10.1016/j.intimp.2024.112446] [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: 04/05/2024] [Revised: 06/06/2024] [Accepted: 06/06/2024] [Indexed: 07/11/2024]
Abstract
Systemic lupus erythematosus (SLE) is recognized as a prevalent autoimmune disorder characterized by a multifaceted pathogenesis potentially influenced by a combination of environmental factors, genetic predisposition, and hormonal regulation. The continuous study of immune system activation is especially intriguing. Analysis of blood samples from individuals with SLE reveals an abnormal increase in interferon levels, along with the existence of anti-double-stranded DNA antibodies. This evidence suggests that the development of SLE may be initiated by innate immunity. The presence of abnormal dsDNA fragments can activate DNA sensors within cells, particularly immune cells, leading to the initiation of downstream signaling cascades that result in the upregulation of relevant cytokines and the subsequent initiation of adaptive immune responses, such as B cell differentiation and T cell activation. The intricate pathogenesis of SLE results in DNA sensors exhibiting a wide range of functions in innate immune responses that are subject to variation based on cell types, developmental processes, downstream effector signaling pathways and other factors. The review aims to reorganize how DNA sensors influence signaling pathways and contribute to the development of SLE according to current studies, with the aspiration of furnishing valuable insights for future investigations into the pathological mechanisms of SLE and potential treatment approaches.
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Affiliation(s)
- Yuxiang Yang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China; Medical School of Tianjin University, Tianjin, China; School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Changhuai Ren
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China; Medical School of Tianjin University, Tianjin, China
| | - Xiaopeng Xu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China; Medical School of Tianjin University, Tianjin, China
| | - Xinyi Yang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China; Medical School of Tianjin University, Tianjin, China; School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Wenwei Shao
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China; Medical School of Tianjin University, Tianjin, China; State Key Laboratory of Advanced Medical Materials and Devices, Tianjin University, Tianjin, China.
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Chen L, Li F, Ni JH, Hao YX, Feng G, Shen XY, You Y. Ursolic acid alleviates lupus nephritis by suppressing SUMO1-mediated stabilization of NLRP3. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155556. [PMID: 38810552 DOI: 10.1016/j.phymed.2024.155556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Systemic lupus erythematosus (SLE) is a multi-system autoimmune disease that affects multiple organs and cause a wide range of severe clinical manifestations, including lupus nephritis (LN), which is a major risk factor for morbidity and mortality in individual with SLE. Ursolic acid (UA) is a natural compound with favorable anti-inflammatory properties and has been employed to treat multiple disease, including inflammatory diseases, diabetes, and Parkinson's disease. However, its therapeutic potential on LN and the underlying mechanisms remains unclear. PURPOSE This aim of this study was to investigate the impact of UA on LN and its underlying mechanism. METHODS MRL/lpr lupus-prone mouse model was used and UA was administered orally for 8 weeks. Dexamethasone was used as a positive control. After 8 weeks of administration, the spleen-to-body-weight ratio, renal function, urine albumin excretion, cytokines levels, and the deposition of immune complex were measured. The primary mouse glomerular mesangial cells (GMCs) and SV40-MES-13 were stimulated by lipopolysaccharide (LPS), either alone or in combination with nigericin, to establish an in vitro model. The activation of NLRP3 inflammasome were investigated both in vivo and in vitro using qRT-PCR, immunoblotting, and immunofluorescence. RESULTS Our results revealed that UA prominently alleviated LN in MRL/lpr lupus-prone mice, leading to a significant reduction in proteinuria production, infiltration of immune cells infiltration, and histopathological damage in the renal tissue. In addition, UA exerted inhibitory effects on the secretion of IL-1β, IL-18, and caspase-1, pyroptosis, and ASC speck formation in primary mouse GMCs and SV40-MES-13 cells. Furthermore, UA facilitated the degradation of NLRP3 by suppressing SUMO1-mediated SUMOylation of NLRP3. CONCLUSION UA possess a therapeutical effect on LN in MRL/lpr mice by enhancing the degradation of NLRP3 through inhibition of SUMO1-mediated SUMOylation of NLRP3. Our findings provide a basis for proposing UA as a potential candidate for the treatment of LN.
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Affiliation(s)
- Luo Chen
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Fei Li
- Dermatology Department Huashan Hospital, Fudan University, Shanghai, China
| | - Jia-Hui Ni
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Yu-Xuan Hao
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Guize Feng
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Xiao-Yan Shen
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China; Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Minhang Hospital, Fudan University, Shanghai, China.
| | - Yan You
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China; Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Minhang Hospital, Fudan University, Shanghai, China.
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Gu Y, Feng X, Jin Y, Liu Y, Zeng L, Zhou D, Feng Y. Upregulation of miRNA-10a-5p promotes tumor progression in cervical cancer by suppressing UBE2I signaling. J OBSTET GYNAECOL 2023; 43:2171283. [PMID: 36744815 DOI: 10.1080/01443615.2023.2171283] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cervical cancer (CC) is a common malignant neoplasm in gynecology. There is increasing evidence to suggest that microRNAs (miRNAs) act as crucial regulators of CC. However, whether miR-10a-5p plays a role in CC is under investigation. The aim of this stuy was to assess the miR-10a-5p expression pattern in the development of CC and investigate its downstream target. MiR-10a-5p inhibition decreased CC cell proliferation and impaired CC cell invasion and migration but enhanced apoptosis. UBE2I was a direct target of miR-10a-5p. QRT-PCR results showed a down-regulation of UBE2I in CC cells, opposing miR-10a-5p. Besides, overexpression of miR-10a-5p down-regulated UBE2I. Functional rescue experiments further indicated the miR-10a-5p-UBE2I axis was linked to CC cell growth, apoptosis and metastasis. MiR-10a-5p upregulation promotes cervical cancer development by inhibiting UBE2I. These results also predict that miR-10a-5p may be a potential target for the clinical treatment of CC.IMPACT STATEMENTWhat is already known on this subject? As a widely researched cancer-related miRNA, the overexpression of miR-10a-5p has been verified in various cancers. It has been described in a meta-analysis report that there were 42 miRNAs up-regulated and 21 miRNAs down-regulated in different stages of cervical cancer tissue versus healthy tissue.What do the results of this study add? We verified that miR-10a-5p initiates and promotes tumor cell development by decreasing UBE2I abundance. This miR-10a-5p-mediated post-transcriptional regulation of UBE2I is involved in the tumorigenesis, invasion and migration of human cervical cancer.What are the implications of these findings for clinical practice and/or further research? These findings provide mechanistic insights into how miR-10a-5p regulates cervical cancer hyper-proliferation and metastasis, as well as a new target for clinical treatment. Nevertheless, whether miR-10a-5p/UBE2I axis can be regulated by non-invasive methods need further exploration, which will be the focus of our future research.
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Affiliation(s)
- Yannan Gu
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
| | - Xiaodan Feng
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
| | - Yanqi Jin
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
| | - Yuanlin Liu
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
| | - Li Zeng
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
| | - Dachun Zhou
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
| | - Yuling Feng
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Hospital of Nantong University, Nantong, China
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Geiger-Schuller K, Eraslan B, Kuksenko O, Dey KK, Jagadeesh KA, Thakore PI, Karayel O, Yung AR, Rajagopalan A, Meireles AM, Yang KD, Amir-Zilberstein L, Delorey T, Phillips D, Raychowdhury R, Moussion C, Price AL, Hacohen N, Doench JG, Uhler C, Rozenblatt-Rosen O, Regev A. Systematically characterizing the roles of E3-ligase family members in inflammatory responses with massively parallel Perturb-seq. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.23.525198. [PMID: 36747789 PMCID: PMC9900845 DOI: 10.1101/2023.01.23.525198] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
E3 ligases regulate key processes, but many of their roles remain unknown. Using Perturb-seq, we interrogated the function of 1,130 E3 ligases, partners and substrates in the inflammatory response in primary dendritic cells (DCs). Dozens impacted the balance of DC1, DC2, migratory DC and macrophage states and a gradient of DC maturation. Family members grouped into co-functional modules that were enriched for physical interactions and impacted specific programs through substrate transcription factors. E3s and their adaptors co-regulated the same processes, but partnered with different substrate recognition adaptors to impact distinct aspects of the DC life cycle. Genetic interactions were more prevalent within than between modules, and a deep learning model, comβVAE, predicts the outcome of new combinations by leveraging modularity. The E3 regulatory network was associated with heritable variation and aberrant gene expression in immune cells in human inflammatory diseases. Our study provides a general approach to dissect gene function.
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6
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You R, He X, Zeng Z, Zhan Y, Xiao Y, Xiao R. Pyroptosis and Its Role in Autoimmune Disease: A Potential Therapeutic Target. Front Immunol 2022; 13:841732. [PMID: 35693810 PMCID: PMC9174462 DOI: 10.3389/fimmu.2022.841732] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/29/2022] [Indexed: 12/13/2022] Open
Abstract
Autoimmune diseases are a group of heterogeneous diseases with diverse clinical manifestations that can be divided into systemic and organ-specific. The common etiology of autoimmune diseases is the destruction of immune tolerance and the production of autoantibodies, which attack specific tissues and/or organs in the body. The pathogenesis of autoimmune diseases is complicated, and genetic, environmental, infectious, and even psychological factors work together to cause aberrant innate and adaptive immune responses. Although the exact mechanisms are unclear, recently, excessive exacerbation of pyroptosis, as a bond between innate and adaptive immunity, has been proven to play a crucial role in the development of autoimmune disease. Pyroptosis is characterized by pore formation on cell membranes, as well as cell rupture and the excretion of intracellular contents and pro-inflammatory cytokines, such as IL-1β and IL-18. This overactive inflammatory programmed cell death disrupts immune system homeostasis and promotes autoimmunity. This review examines the molecular structure of classical inflammasomes, including NLRP3, AIM2, and P2X7-NLRP3, as the switches of pyroptosis, and their molecular regulation mechanisms. The sophisticated pyroptosis pathways, including the canonical caspase-1-mediated pathway, the noncanonical caspase-4/5/11-mediated pathway, the emerging caspase-3-mediated pathway, and the caspase-independent pathway, are also described. We highlight the recent advances in pyroptosis in autoimmune diseases, such as systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, Sjögren's syndrome and dermatomyositis, and attempt to identify its potential advantages as a therapeutic target or prognostic marker in these diseases.
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Affiliation(s)
- Ruixuan You
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Medical Epigenetics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xinglan He
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Medical Epigenetics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Zhuotong Zeng
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Medical Epigenetics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yi Zhan
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Medical Epigenetics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yangfan Xiao
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital of Central South University, Changsha, China.,Department of Anesthesiology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Rong Xiao
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Medical Epigenetics, The Second Xiangya Hospital of Central South University, Changsha, China
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7
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Dendritic cells in systemic lupus erythematosus: From pathogenesis to therapeutic applications. J Autoimmun 2022; 132:102856. [DOI: 10.1016/j.jaut.2022.102856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 06/15/2022] [Indexed: 11/18/2022]
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8
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Wu H, Deng Y, Long D, Yang M, Li Q, Feng Y, Chen Y, Qiu H, Huang X, He Z, Hu L, Yin H, Li G, Guo Y, Du W, Zhao M, Lu L, Lu Q. The IL-21-TET2-AIM2-c-MAF pathway drives the T follicular helper cell response in lupus-like disease. Clin Transl Med 2022; 12:e781. [PMID: 35343082 PMCID: PMC8958352 DOI: 10.1002/ctm2.781] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 03/02/2022] [Accepted: 03/07/2022] [Indexed: 12/14/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that involves T follicular helper (TFH ) cell-mediated humoral immune responses. Absent in melanoma 2 (human AIM2 and murine Aim2) is a well-known component of the inflammasome in the innate immune system. Surprisingly, we observed that in SLE patients, upregulated levels of AIM2 expression were found in peripheral blood and skin lesions, with the highest levels detected in TFH -like cells. In the CD4cre Aim2fl/fl conditional knockout mice, a markedly reduced TFH cell response was observed, with significantly lower levels of serum autoantibodies and proteinuria, as well as profoundly reduced renal IgG deposition in pristane-induced lupus mice. Mechanistically, IL-21 was found to recruit hydroxymethyltransferase ten-eleven translocation 2 (TET2) to the AIM2 promoter, resulting in DNA demethylation and increased transcription of AIM2. In addition, AIM2 could regulate c-MAF expression to enhance IL-21 production, which consequently promoted TFH cell differentiation. Our results have identified a role of AIM2 in promoting the TFH cell response and further revealed that the IL-21-TET2-AIM2-c-MAF signalling pathway is dysregulated in lupus pathogenesis, which provides a potential therapeutic target for SLE.
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Affiliation(s)
- Haijing Wu
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Yaxiong Deng
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Di Long
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Ming Yang
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Qianwen Li
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Yu Feng
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Yongjian Chen
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Hong Qiu
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Xin Huang
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Zhenghao He
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Longyuan Hu
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Heng Yin
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Guangdi Li
- Department of Public HealthCentral South UniversityChangshaChina
| | - Yunkai Guo
- Department of Otolaryngology Head and Neck SurgerySecond Xiangya HospitalCentral South UniversityChangshaChina
| | - Wenhan Du
- Department of Pathology and Center for Infection and ImmunologyThe University of Hong KongChongqing International Institute for ImmunologyHong KongChina
| | - Ming Zhao
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
| | - Liwei Lu
- Department of Pathology and Center for Infection and ImmunologyThe University of Hong KongChongqing International Institute for ImmunologyHong KongChina
| | - Qianjin Lu
- Department of DermatologySecond Xiangya HospitalHunan Key Laboratory of Medical EpigenomicsCentral South UniversityChangshaChina
- Chinese Academy of Medical Sciences and Peking Union Medical CollegeInstitute of DermatologyNanjingChina
- Key Laboratory of Basic and Translational Research on Immune‐Mediated Skin DiseasesNanjingChina
- Chinese Academy of Medical SciencesJiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIsNanjingChina
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9
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Xu WD, Huang AF. Absent in melanoma 2 in lupus: friend or foe? Arthritis Rheumatol 2022; 74:1093-1094. [PMID: 35133085 DOI: 10.1002/art.42084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 01/26/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Wang-Dong Xu
- Department of Evidence-Based Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - An-Fang Huang
- Department of Rheumatology and Immunology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
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10
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Zhao X, Ge L, Wang J, Song Z, Ni B, He X, Ruan Z, You Y. Exploration of Potential Integrated Models of N6-Methyladenosine Immunity in Systemic Lupus Erythematosus by Bioinformatic Analyses. Front Immunol 2022; 12:752736. [PMID: 35197962 PMCID: PMC8859446 DOI: 10.3389/fimmu.2021.752736] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/31/2021] [Indexed: 01/27/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a prototypical systemic autoimmune disease of unknown etiology. The epigenetic regulation of N6-methyladenosine (m6A) modification in immunity is emerging. However, few studies have focused on SLE and m6A immune regulation. In this study, we aimed to explore a potential integrated model of m6A immunity in SLE. The models were constructed based on RNA-seq data of SLE. A consensus clustering algorithm was applied to reveal the m6A-immune signature using principal component analysis (PCA). Univariate and multivariate Cox regression analyses and Kaplan–Meier analysis were used to evaluate diagnostic differences between groups. The effects of m6A immune-related characteristics were investigated, including risk evaluation of m6A immune phenotype-related characteristics, immune cell infiltration profiles, diagnostic value, and enrichment pathways. CIBERSORT, ESTIMATE, and single-sample gene set enrichment analysis (ssGSEA) were used to evaluate the relative immune cell infiltrations (ICIs) of the samples. Conventional bioinformatics methods were used to identify key m6A regulators, pathways, gene modules, and the coexpression network of SLE. In summary, our study revealed that IGFBP3 (as a key m6A regulator) and two pivotal immune genes (CD14 and IDO1) may aid in the diagnosis and treatment of SLE. The potential integrated models of m6A immunity that we developed could guide clinical management and may contribute to the development of personalized immunotherapy strategies.
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Affiliation(s)
- Xingwang Zhao
- Department of Dermatology, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Lan Ge
- Department of Dermatology, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Juan Wang
- Department of Dermatology, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Zhiqiang Song
- Department of Dermatology, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Bing Ni
- Department of Pathophysiology, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xiaochong He
- Department of Nursing Administration, Faculty of Nursing, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Yi You, ; Xiaochong He, ; Zhihua Ruan,
| | - Zhihua Ruan
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Yi You, ; Xiaochong He, ; Zhihua Ruan,
| | - Yi You
- Department of Dermatology, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Yi You, ; Xiaochong He, ; Zhihua Ruan,
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Chung H, Komada T, Lau A, Chappellaz M, Platnich JM, de Koning HD, Petri B, Luque Y, Walker S, Benediktsson H, Mesnard L, Chun J, Muruve DA. AIM2 Suppresses Inflammation and Epithelial Cell Proliferation during Glomerulonephritis. THE JOURNAL OF IMMUNOLOGY 2021; 207:2799-2812. [PMID: 34740957 DOI: 10.4049/jimmunol.2100483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 09/28/2021] [Indexed: 11/19/2022]
Abstract
Absent in melanoma-2 (AIM2) is an inflammasome-forming innate immune sensor for dsDNA but also exhibits inflammasome-independent functions such as restricting cellular proliferation. AIM2 is expressed in the kidney, but its localization and function are not fully characterized. In normal human glomeruli, AIM2 localized to podocytes. In patients with glomerulonephritis, AIM2 expression increased in CD44+-activated parietal epithelial cells within glomerular crescents. To explore AIM2 effects in glomerular disease, studies in Aim2 -/- mice were performed. Aim2-/- glomeruli showed reduced expression of Wilm tumor gene-1 (WT1), WT1-driven podocyte genes, and increased proliferation in outgrowth assays. In a nephrotoxic serum (NTS)-induced glomerulonephritis model, Aim2-/- (B6) mice exhibited more severe glomerular crescent formation, tubular injury, inflammation, and proteinuria compared with wild-type controls. Inflammasome activation markers were absent in both Aim2 -/- and wild-type kidneys, despite an increased inflammatory transcriptomic signature in Aim2 -/- mice. Aim2 -/- mice also demonstrated dysregulated cellular proliferation and an increase in CD44+ parietal epithelial cells during glomerulonephritis. The augmented inflammation and epithelial cell proliferation in Aim2 -/- (B6) mice was not due to genetic background, as Aim2 -/- (B6.129) mice demonstrated a similar phenotype during NTS glomerulonephritis. The AIM2-like receptor (ALR) locus was necessary for the inflammatory glomerulonephritis phenotype observed in Aim2 -/- mice, as NTS-treated ALR -/- mice displayed equal levels of injury as wild-type controls. Podocyte outgrowth from ALR -/- glomeruli was still increased, however, confirming that the ALR locus is dispensable for AIM2 effects on epithelial cell proliferation. These results identify a noncanonical role for AIM2 in suppressing inflammation and epithelial cell proliferation during glomerulonephritis.
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Affiliation(s)
- Hyunjae Chung
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Takanori Komada
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Arthur Lau
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Mona Chappellaz
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jaye M Platnich
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Heleen D de Koning
- Department of Dermatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Björn Petri
- Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Yosu Luque
- Soins Intensifs Néphrologiques et Rein Aigu (SINRA), Département de Néphrologie, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Inserm UMR_S1155, Sorbonne Université, Paris, France; and
| | - Simon Walker
- Department of Pathology and Laboratory Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Hallgrimur Benediktsson
- Department of Pathology and Laboratory Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Laurent Mesnard
- Soins Intensifs Néphrologiques et Rein Aigu (SINRA), Département de Néphrologie, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Inserm UMR_S1155, Sorbonne Université, Paris, France; and
| | - Justin Chun
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Daniel A Muruve
- Department of Medicine, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada;
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