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Yang P, Liu Z, Lu F, Sha Y, Li P, Zheng Q, Wang K, Zhou X, Zeng X, Wu Y. Machine learning models predicts risk of proliferative lupus nephritis. Front Immunol 2024; 15:1413569. [PMID: 38919623 PMCID: PMC11196753 DOI: 10.3389/fimmu.2024.1413569] [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: 04/07/2024] [Accepted: 05/31/2024] [Indexed: 06/27/2024] Open
Abstract
Objective This study aims to develop and validate machine learning models to predict proliferative lupus nephritis (PLN) occurrence, offering a reliable diagnostic alternative when renal biopsy is not feasible or safe. Methods This study retrospectively analyzed clinical and laboratory data from patients diagnosed with SLE and renal involvement who underwent renal biopsy at West China Hospital of Sichuan University between 2011 and 2021. We randomly assigned 70% of the patients to a training cohort and the remaining 30% to a test cohort. Various machine learning models were constructed on the training cohort, including generalized linear models (e.g., logistic regression, least absolute shrinkage and selection operator, ridge regression, and elastic net), support vector machines (linear and radial basis kernel functions), and decision tree models (e.g., classical decision tree, conditional inference tree, and random forest). Diagnostic performance was evaluated using ROC curves, calibration curves, and DCA for both cohorts. Furthermore, different machine learning models were compared to identify key and shared features, aiming to screen for potential PLN diagnostic markers. Results Involving 1312 LN patients, with 780 PLN/NPLN cases analyzed. They were randomly divided into a training group (547 cases) and a testing group (233 cases). we developed nine machine learning models in the training group. Seven models demonstrated excellent discriminatory abilities in the testing cohort, random forest model showed the highest discriminatory ability (AUC: 0.880, 95% confidence interval(CI): 0.835-0.926). Logistic regression had the best calibration, while random forest exhibited the greatest clinical net benefit. By comparing features across various models, we confirmed the efficacy of traditional indicators like anti-dsDNA antibodies, complement levels, serum creatinine, and urinary red and white blood cells in predicting and distinguishing PLN. Additionally, we uncovered the potential value of previously controversial or underutilized indicators such as serum chloride, neutrophil percentage, serum cystatin C, hematocrit, urinary pH, blood routine red blood cells, and immunoglobulin M in predicting PLN. Conclusion This study provides a comprehensive perspective on incorporating a broader range of biomarkers for diagnosing and predicting PLN. Additionally, it offers an ideal non-invasive diagnostic tool for SLE patients unable to undergo renal biopsy.
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Affiliation(s)
- Panyu Yang
- Department of Laboratory Medicine, West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
- Jintang First People’s Hospital, Chengdu, China
- Department of Laboratory Medicine, Sichuan Jinxin Xinan Women’s and Children’s Hospital , Chengdu, China
- Department of Obstetrics, Chengdu Jinjiang Hospital for Women & Children Health, Chengdu, China
| | - Zhongyu Liu
- Department of Laboratory Medicine, West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Fenjian Lu
- Center for Reproductive Medicine, The Third People’s Hospital of Chengdu, Chengdu, China
| | - Yulin Sha
- Department of Laboratory Medicine, Sichuan Jinxin Xinan Women’s and Children’s Hospital , Chengdu, China
- Department of Obstetrics, Chengdu Jinjiang Hospital for Women & Children Health, Chengdu, China
| | - Penghao Li
- Department of Laboratory Medicine, Sichuan Jinxin Xinan Women’s and Children’s Hospital , Chengdu, China
- Department of Obstetrics, Chengdu Jinjiang Hospital for Women & Children Health, Chengdu, China
| | - Qu Zheng
- Department of Laboratory Medicine, Sichuan Jinxin Xinan Women’s and Children’s Hospital , Chengdu, China
- Department of Obstetrics, Chengdu Jinjiang Hospital for Women & Children Health, Chengdu, China
| | - Kefen Wang
- Department of Laboratory Medicine, West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xin Zhou
- Department of Laboratory Medicine, West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoxi Zeng
- Department of Laboratory Medicine, West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yongkang Wu
- Department of Laboratory Medicine, West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
- Jintang First People’s Hospital, Chengdu, China
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Lu K, Li X, Wu J. Sirtuin 3 is required for the dexmedetomidine-mediated alleviation of inflammation and oxidative stress in nephritis. Immun Inflamm Dis 2024; 12:e1135. [PMID: 38270316 PMCID: PMC10777884 DOI: 10.1002/iid3.1135] [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: 03/29/2023] [Revised: 11/23/2023] [Accepted: 12/17/2023] [Indexed: 01/26/2024] Open
Abstract
INTRODUCTION Although sirtuin 3 (SIRT3) is known to be involved in dexmedetomidine (DEX)-mediated alleviation of renal ischemia and reperfusion injury, the influence of the association between DEX and SIRT3 on nephritis development remains unclear. In this study, the role of SIRT3 in DEX-mediated amelioration of inflammation and oxidative stress in nephritis as well as the possible underlying mechanism were explored in vivo and in vitro. METHODS An animal model of glomerulonephritis was generated by injecting mice with interferon-alpha (IFNα)-expressing adenoviruses, and periodic acid-Schiff staining was then used to reveal pathogenicity-related changes in the renal tissue. Additionally, human embryonic kidney cells (HEK293) and renal mesangial cells (RMCs) were treated with IFNα to establish cell models of inflammation in vitro. RESULTS DEX administration alleviated glomerulonephritis in the animal model and upregulated SIRT3 expression in the renal tissue. SIRT3 knockdown inhibited the renoprotective effects of DEX against nephritis. IFNα induced inflammation, oxidative stress, and apoptosis in the RMCs and HEK293 cells and reduced their growth, as evidenced by the evaluation of cytokine levels (enzyme-linked immunosorbent assay), reactive oxygen species generation, catalase and superoxide dismutase activities, nuclear factor-erythroid factor 2-related factor 2/heme oxygenase-1 signal transduction, apoptotic cell proportion, and cell viability. In addition to promoting SIRT3 expression, DEX inhibited IFNα-induced inflammation, oxidative stress, and apoptosis in these cells and promoted their viability. SIRT3 knockdown partially reversed the beneficial effects of DEX on RMCs and HEK293 cells. CONCLUSIONS Our results suggest that DEX exhibits renoprotective activity during nephritis progression, protecting renal cells against inflammatory injury by promoting SIRT3 expression.
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Affiliation(s)
- Kai Lu
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of MedicineZhejiang UniversityHangzhouChina
| | - Xinlong Li
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of MedicineZhejiang UniversityHangzhouChina
| | - Jie Wu
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of MedicineZhejiang UniversityHangzhouChina
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Qing J, Song W, Tian L, Samuel SB, Li Y. Potential Small Molecules for Therapy of Lupus Nephritis Based on Genetic Effect and Immune Infiltration. BIOMED RESEARCH INTERNATIONAL 2022; 2022:2259164. [PMID: 35502341 PMCID: PMC9056222 DOI: 10.1155/2022/2259164] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/09/2022] [Accepted: 03/30/2022] [Indexed: 02/07/2023]
Abstract
Lupus nephritis (LN) is the most common and significant complication of systemic lupus erythematosus (SLE) due to its poor prognosis and mortality rates in SLE patients. There is a critical need for new drugs as the pathogenesis of LN remains to be elucidated and immunosuppressive therapy comes with many deficiencies. In this study, 23 hub genes (IFI6, PLSCR1, XAF1, IFI16, IFI44, MX1, IFI44L, IFIT3, IFIT2, IFI27, DDX58, EIF2AK2, IFITM1, RTP4, IFITM3, TRIM22, PARP12, IFIH1, OAS1, HERC6, RSAD2, DDX60, and MX2) were identified through bioinformatics and network analysis and are closely related to interferon production and function. Interestingly, immune cell infiltration analysis and correlation analysis demonstrate a positive correlation between the expression of 23 hub genes and monocyte infiltration in glomeruli and M2 macrophage infiltration in the tubulointerstitium of LN patients. Additionally, the CTD database, DsigDB database, and DREIMT database were used to explore the bridging role of genes in chemicals and LN as well as the potential influence of these chemicals on immune cells. After comparison and discussion, six small molecules (Acetohexamide, Suloctidil, Terfenadine, Prochlorperazine, Mefloquine, and Triprolidine) were selected for their potential ability in treating lupus nephritis.
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Affiliation(s)
- Jianbo Qing
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Wenzhu Song
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Lingling Tian
- Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi 030000, China
| | - Sonia Biju Samuel
- Department of Medicine, Albany Medical Center. 43 New Scotland Ave, Albany, New York 12208, USA
| | - Yafeng Li
- Department of Nephrology, Shanxi Provincial People's Hospital (Fifth Hospital) of Shanxi Medical University, Taiyuan, Shanxi 030012, China
- Core Laboratory, Shanxi Provincial People's Hospital (Fifth Hospital) of Shanxi Medical University, Taiyuan, Shanxi 030012, China
- Shanxi Provincial Key Laboratory of Kidney Disease, Shanxi Provincial People's Hospital (Fifth Hospital) of Shanxi Medical University, Taiyuan, Shanxi 030012, China
- Academy of Microbial Ecology, Shanxi Medical University, Taiyuan, Shanxi 030000, China
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Rong R, Wen Q, Wang Y, Zhou Q, Qiu Y, Lu M, Liu X, Chen W, Yu X. Prognostic significance of hypertension at the onset of lupus nephritis in Chinese patients: prevalence and clinical outcomes. J Hum Hypertens 2022; 36:153-162. [PMID: 33686211 DOI: 10.1038/s41371-021-00492-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 12/08/2020] [Accepted: 01/20/2021] [Indexed: 02/06/2023]
Abstract
The demographic features, and clinical and histological characteristics of lupus nephritis (LN) patients with hypertension in the Chinese population remain unclear. Hence, the clinical characteristics of LN with and without hypertension were retrospectively analyzed. A total of 764 LN patients (53.1%) were hypertensive. These hypertensive patients had higher levels of serum creatinine and blood urea nitrogen, and lower estimated glomerular filtration rates, when compared to their normotensive counterparts (P < 0.05). Furthermore, these hypertensive patients had higher median acuity index and chronicity index scores, when compared to normotensives (P < 0.001). In terms of histology, hypertensive patients were more likely to develop glomerular sclerosis, thickened glomerular capillary loops, or crescent formations, and had more severe endothelial cell proliferation, when compared to normotensive patients (P < 0.001). Hypertensive patients also had a higher percentage for more severe tubular atrophy, interstitial inflammatory cell infiltration and interstitial fibrosis (P < 0.001). Compared with normotensive patients, hypertensive patients exhibited a significant decline in survival time and rate for all end points (P < 0.01). The presence of hypertension was an independent predictor of mortality (P = 0.009), ESRD (P = 0.026), and doubling of serum creatinine (P = 0.017). In conclusion, hypertension is associated with poor clinical and renal outcome in LN patients. The monitoring and control of hypertension should be considered an important clinical goal in the treatment of LN patients.
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Affiliation(s)
- Rong Rong
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China.,Department of Medical Education, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qiong Wen
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Yating Wang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Qian Zhou
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yagui Qiu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Miaoqing Lu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Xiaotian Liu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory of National Health Commission, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China.
| | - Xueqing Yu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of National Health Commission, Guangzhou, China.,Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
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5
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Guo PW, Huang HT, Ma J, Zuo Y, Huang D, He LL, Wan ZM, Chen C, Yang FF, You YW. Circular RNA-0007059 protects cell viability and reduces inflammation in a nephritis cell model by inhibiting microRNA-1278/SHP-1/STAT3 signaling. Mol Med 2021; 27:113. [PMID: 34535085 PMCID: PMC8447523 DOI: 10.1186/s10020-021-00372-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 09/03/2021] [Indexed: 12/16/2022] Open
Abstract
Background Increasing evidence has indicated that circular RNAs (circRNAs) play a role in various diseases. However, the influence of circRNAs in nephritis remains unknown. Methods Microarray analysis and RT-qPCR were used to detect the expression of circRNA. Type I IFN were administrated to RMC and HEK293 cells to establish a nephritis cell model. CCK-8, MTT assay, and flow cytometry were used to assess cell proliferation, viability, and apoptosis of cells. Bioinformatics analysis and dual luciferase reporter assay detect the interaction of circ_0007059, miRNA-1278, and SHP-1. Glomerulonephritis was performed in a mouse model by administration of IFNα-expressing adenovirus. IHC staining showed the pathogenic changes. Results In the present study, the expression of circ_0007059 in type I interferon (IFN)-treated renal mesangial cells (RMCs), lupus nephritis (LN) specimens, and HEK293 cells was downregulated compared with that in normal healthy samples and untreated cells. Circ_0007059 overexpression resulted in increased cell proliferation, cell viability, apoptosis, and inflammation-associated factors (CXCL10, IFIT1, ISG15, and MX1) in RMCs and HEK293 cells. In addition, circ_0007059 overexpression significantly restored cell proliferation and viability and inhibited IFN-induced apoptosis. Further, the increased expression resulted in reduced inflammation and the downregulation of CXCL10, IFIT1, ISG15, and MX1 in RMCs and HEK293 cells. Circ_0007059 serves as a sponge for miR-1278 so that the latter can target the 3′-untranslated region of SHP-1. Overexpressed circ_0007059 inhibited miR-1278 expression and elevated SHP-1 expression, subsequently reducing STAT3 phosphorylation. Meanwhile, miR-1278 was upregulated and SHP-1 was downregulated in LN samples and IFN-treated cells. The restoration of miR-1278 counteracted the effect of circ_0007059 on viability, apoptosis, and inflammation as well as on SHP-1/STAT3 signaling in RMCs and HEK293 cells. We also investigated the role of SHP-1 overexpression in IFN-treated RMCs and HEK293 cells; SHP-1 overexpression resulted in a similar phenotype as that observed with circ_0007059 expression. Conclusions The study indicates that circ_0007059 protects RMCs against apoptosis and inflammation during nephritis by attenuating miR-1278/SHP-1/STAT3 signaling. Supplementary Information The online version contains supplementary material available at 10.1186/s10020-021-00372-6.
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Affiliation(s)
- Peng-Wei Guo
- First Affiliated Hospital of Jinan University, Guangzhou, 510630, Guangdong, China
| | - Hai-Ting Huang
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China
| | - Jing Ma
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China
| | - Yao Zuo
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China
| | - Dan Huang
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China
| | - Lin-Lin He
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China
| | - Zi-Ming Wan
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Youyi Road 1, Chongqing, 400042, China
| | - Cheng Chen
- Department of Nephrology, Renmin Hospital of Wuhan University, No. 238 Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Fa-Fen Yang
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China.
| | - Yan-Wu You
- Department of Nephrology, Affiliated Hospital of Youjiang Medical University for Nationalities, No.18 Zhongshan Road II, Baise, 533000, Guangxi Zhuang Autonomous Region, China.
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Liu J, Zhang D, Wang K, Li Z, He Z, Wu D, Xu Z, Zhou J. Time Course of Metabolic Alterations Associated with the Progression of Systemic Lupus Erythematosus in MRL/lpr Mice Based on GC/MS. J Proteome Res 2020; 20:1243-1251. [PMID: 33356297 DOI: 10.1021/acs.jproteome.0c00619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Exploring the dynamic changes of metabolites and metabolic pathways during the development of the disease can help to further understand the etiology and pathogenesis of systemic lupus erythematosus (SLE). In this study, serum metabolomics based on gas chromatography/mass spectrometry (GC/MS) was employed to investigate the metabolic alterations at different stages of SLE using lupus-prone mice (MRL/lpr) of 9, 11, and 13 weeks of age. Multivariate statistical analysis was performed to view the alterations of metabolic profiles between MRL/lpr mice and age-matched C57BL/6 mice, and t-test and fold change criteria were used to identify differential metabolites at each stage. 11 changed metabolites were found in MRL/lpr mice at 9 weeks of age, which were mainly involved in the tricarboxylic acid (TCA) cycle, glycolysis, and butanoate metabolism; with the increase of week age, the TCA cycle was still disturbed, and the biosynthesis of fatty acids was significantly upregulated since 11 weeks of age; in addition, urea, urate, and indole-3-lactate were increased at 13 weeks of age. We found a time course of metabolic alterations in MRL/lpr mice, which may be related to the progression of SLE. These findings could provide a reference for studying the mechanism of SLE and judging the pathological stage and severity of the disease. The MS data have been deposited in Mendeley (https://www.mendeley.com/).
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Affiliation(s)
- Jiajia Liu
- TCM Clinical Basis Institute, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Dingyi Zhang
- TCM Clinical Basis Institute, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Keer Wang
- TCM Clinical Basis Institute, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Zhengfu Li
- The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Zhaochun He
- The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Dehong Wu
- The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Zhenghao Xu
- TCM Clinical Basis Institute, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
| | - Jia Zhou
- TCM Clinical Basis Institute, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310000, China
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Brady MP, Korte EA, Caster DJ, Powell DW. TNIP1/ABIN1 and lupus nephritis: review. Lupus Sci Med 2020; 7:e000437. [PMID: 33122334 PMCID: PMC7597513 DOI: 10.1136/lupus-2020-000437] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/15/2020] [Accepted: 10/08/2020] [Indexed: 12/17/2022]
Abstract
SLE is a complex autoimmune disease with genetic, epigenetic, immune-regulatory, environmental and hormonal factors. Kidney inflammation and injury, termed lupus nephritis (LN), occurs in over half of patients with SLE and is a leading cause of disability and death. There is a high degree of short-term and long-term side effects associated with current LN therapies and they are not effective for many patients. Thus, novel therapies with reduced toxicity and improved efficacy are drastically needed. Many of the known LN susceptibility genes have functions that mediate inflammation via cytokine/chemokine production and activation of myeloid and B cells. Understanding the cellular and molecular mechanisms mediated by these variant gene products provides valuable insight for the development of improved and personalised diagnostics and therapeutics. This review describes variants in the TNIP1 (tumour necrosis factor α-induced protein 3-interacting protein 1) gene associated with risks for SLE and LN and potential roles for loss of function of its protein product ABIN1 in the activation of myeloid and B-cell-mediated injury in LN.
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Affiliation(s)
- Makayla P Brady
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Erik A Korte
- Bluewater Diagnostics Laboratory, Mt. Washington, Kentucky, USA
| | - Dawn J Caster
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - David W Powell
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
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Jin LR, Tao MJ, Zhou J, Xu L, Li Q, Li Z, Peng H, Yuan H. Metabolic syndrome in systemic lupus erythematosus was closely related to body mass index, blood pressure, blood sugar, blood lipids, and arthritis. Pak J Med Sci 2020; 36:1220-1227. [PMID: 32968384 PMCID: PMC7501005 DOI: 10.12669/pjms.36.6.2093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background and Objective: Prevention and control of metabolic syndrome is the key to improving the development of systemic lupus erythematosus. The aim of this study was to analyze the relevant factors regarding metabolic syndrome (MS) in systemic lupus erythematosus (SLE). Methods: A total number of 1238 SLE patients in Yijishan Hospital of Wannan Medical College, Anhui province, from February 2012 to July 2017, were analyzed retrospectively. SLE patients with MS were grouped to group SLE-MS, the others without MS was grouped to group SLE-nMS. The two groups were compared with respect to general characteristics, clinical signs, and laboratory parameters. Random forest approach and multivariate logistic regression were conducted to analyze the related factors regarding MS in SLE. Results: The constituent ratio of metabolic syndrome was 27.14% (336/1238). More SLE patients with MS presented with more farmers, more married people, lower education level, and more lupus nephritis, proteinuria, oral ulcers, tubular urine, hematuria than SLE patients without MS (P<0.05). Moreover, eighteen important variables, whose average importance scores were highest and whose error rates were lowest, were selected by random forest method. Data from multivariate logistic regression showed that MS in SLE was related with BMI, diastolic blood pressure, systolic blood pressure, fasting blood glucose, arthritis, urea, triglycerides, high-density lipoprotein, and white blood cells. Conclusion: MS in SLE was closely related to BMI, blood pressure, blood sugar, blood lipids, arthritis, white blood cells, and urea. Targeted prevention and conclusion measures for the risk factors should be taken as early as possible.
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Affiliation(s)
- Lai-Run Jin
- Lai-Run Jin, Office of Educational Administration, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu 241001, China
| | - Meng-Jun Tao
- Meng-Jun Tao, School of Public Health, Wannan Medical College, Wuhu 241001, China
| | - Jun Zhou
- Jun Zhou, School of Public Health, Wannan Medical College, Wuhu 241001, China
| | - Liang Xu
- Liang Xu, Department of Rheumatology, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu 241001, China
| | - Qiang Li
- Qiang Li, Department of Medical Record, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu 241001, China
| | - Zhi Li
- Zhi Li, Department of Rheumatology, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu 241001, China
| | - Hui Peng
- Hui Peng, Administration Office of Hospital Admission and Discharge, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu 241001, China
| | - Hui Yuan
- Hui Yuan, School of Public Health, Wannan Medical College, Wuhu 241001, China
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9
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Wu WJ, Tan Y, Liu XL, Yu F, Zhao MH. C1q A08 Is a Half-Cryptic Epitope of Anti-C1q A08 Antibodies in Lupus Nephritis and Important for the Activation of Complement Classical Pathway. Front Immunol 2020; 11:848. [PMID: 32536911 PMCID: PMC7267003 DOI: 10.3389/fimmu.2020.00848] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 04/14/2020] [Indexed: 11/21/2022] Open
Abstract
To investigate the fine epitope(s) of anti-C1q A08 antibodies and their roles in complement activation in lupus nephritis, C1q A08 and related peptides with various amino acid sequences around A08 were synthesized. Anti-C1q A08 antibodies from 10 lupus nephritis patients were purified from plasmapheresis samples, and four monoclonal antibodies against C1q A08 were screened and identified from mouse hybridoma cells, to study the fine epitope(s) of C1q A08 using ELISA and Biolayer Interferometry (BLI). The biofunction of anti-C1q A08 antibodies for complement classical pathway activation was investigated by C3 activation assay. Anti-C1q A08 antibodies and anti-C1q antibodies were also detected in the sera of female BALB/C mice immunized by C1q A08 peptides. None of the anti-C1q A08 antibodies, which were affinity purified from the 10 lupus nephritis patients, could bind intact C1q coated on microtitre plates, neither could the anti-C1q antibodies bind to C1q A08 peptides coupled on resin, indicating that the human anti-C1q antibodies and anti-C1q A08 antibodies may recognize different epitopes of C1q. One of the four C1q A08 mAbs (32-4) bound to the six amino acids of N-terminus of C1q A08, while another C1q A08 mAb (17-9) bound to eight or 10 amino acids of C-terminus of A08. The third and fourth C1q A08 mAb (1A12 and 4B11) bound to the whole sequence of A08. Only 32-4 mAb bound to the intact C1q coating on an ELISA plate, whereas 17-9 mAb, 1A12 mAb, and 4B11 mAb could not. However, using a BLI assay, 17-9 mAb, 1A12 mAb, and 4B11 mAb, but not 32-4 mAb, could bind to intact C1q. Furthermore, 1A12 mAb and 4B11 mAb, but not 32-4 and 17-9 mAb, could inhibit the activation of complement classical pathway. Anti-C1q A08 antibodies were detected in all the female BALB/C mice in the experimental group but not in the control group. Two out of six in the experimental group developed anti-C1q antibodies. C1q A08 is a half-cryptic epitope of C1q involving N-terminal six amino acids of C1q A08, and this is important to the activation of a complement classical pathway, and some anti-C1q A08 antibodies were able to prevent this process. Epitope spreading of C1q occurred in the mice immunized with C1q A08 peptides.
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Affiliation(s)
- Wen-Jun Wu
- School of Life Science, Tsinghua University, Beijing, China.,Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Institute of Nephrology, Peking University, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Ying Tan
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Institute of Nephrology, Peking University, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China, Beijing, China
| | - Xiao-Ling Liu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Institute of Nephrology, Peking University, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China, Beijing, China
| | - Feng Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Institute of Nephrology, Peking University, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China, Beijing, China.,Department of Nephrology, Peking University International Hospital, Beijing, China
| | - Ming-Hui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Institute of Nephrology, Peking University, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China
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10
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Yang Y, Luo R, Cheng Y, Liu T, Dai W, Li Y, Ge S, Xu G. Leucine-rich α2-glycoprotein-1 upregulation in plasma and kidney of patients with lupus nephritis. BMC Nephrol 2020; 21:122. [PMID: 32252660 PMCID: PMC7137487 DOI: 10.1186/s12882-020-01782-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 03/23/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Increased leucine-rich α2-glycoprotein-1 (LRG1) has been observed in various inflammatory and autoimmune diseases. We aimed to explore the expression and role of LRG1 in lupus nephritis (LN). METHODS Plasma LRG1 (pLRG1) was measured by enzyme-linked immunosorbent assay in 101 patients with renal biopsy-proven LN and 21 healthy controls (HC). Relationships between pLRG1 and clinical and pathological characteristics were analyzed. The expression of LRG1 in peripheral blood leukocytes and kidney was detected by flow cytometry, immunohistochemistry and immunofluorescence, respectively. Further cell experiments were focused on the role of LRG1. RESULTS We found that LRG1 was expressed in plasma, some peripheral blood leukocytes, proximal tubule and several inflammatory cells. The levels of LRG1 in plasma, peripheral blood leukocytes and kidney were elevated in LN patients as compared to HC. Plasma expression levels of LRG1 correlated positively with renal function and renal disease activity, and reflect specific pathologic lesions in the kidneys of patients with LN. Interleukin-1β and interleukin-6, not tumor necrosis factor-α and interferon γ induced the LRG1 expression in human renal tubular epithelial cell line. Moreover, stimulation of recombinant human LRG1 could inhibit late apoptosis, promote proliferation and regulate expression of inflammatory factors and cytokines. CONCLUSIONS Plasma expression levels of LRG1 were associated with renal function, disease activity, and pathology in LN. It might also be involved in renal inflammation, proliferation and apoptosis of endothelial cells. LRG1 might be a potential prognosis novel predictor in LN patients.
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Affiliation(s)
- Yi Yang
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Ran Luo
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Yichun Cheng
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Tingting Liu
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Wei Dai
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Yueqiang Li
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Shuwang Ge
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China.
| | - Gang Xu
- Department of Nephrology, Tongji Hospital Affiliated with Tongji Medical College, Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
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11
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Leptin: an unappreciated key player in SLE. Clin Rheumatol 2019; 39:305-317. [PMID: 31707542 DOI: 10.1007/s10067-019-04831-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/18/2019] [Accepted: 10/23/2019] [Indexed: 02/08/2023]
Abstract
Leptin is the forerunner of the adipokine superfamily and plays a key role in regulating energy expenditure and neuroendocrine function. Researches into leptin put emphasize not only on the metabolic role but also its immunoregulatory effect on immune response through immunocyte activation and cytokine secretion. Leptin acts on receptors that are widespread throughout the body and that are expressed across many tissue types. As a consequence, the abnormal expression of leptin has been found to correlate with a number of diseases, including cancers, autoimmune diseases, and cardiovascular diseases. The significance of leptin in the development of autoimmune diseases is becoming increasingly prominent. Systemic lupus erythematosus (SLE) is a severe atypical autoimmune disease that causes damage to multiple organ systems. It is characterised by the following: impaired clearance of apoptotic cells, loss of tolerance to self-antigens, aberrant activation of T cells and B cells, and chronic inflammation. The heightened immunocyte response in SLE means that these physiological systems are particularly vulnerable to regulation by leptin in addition to being of great significance to the research field. Our current review provides insight into the regulatory roles that leptin plays on immune effector cells in SLE.
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12
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Salem MN, Taha HA, Abd El-Fattah El-Feqi M, Eesa NN, Mohamed RA. Urinary TNF-like weak inducer of apoptosis (TWEAK) as a biomarker of lupus nephritis. Z Rheumatol 2019; 77:71-77. [PMID: 27619369 DOI: 10.1007/s00393-016-0184-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Renal involvement in systemic lupus erythematosus (SLE), known as lupus nephritis (LN), is a common and severe complication and a major predictor of poor outcome. Long-term survival in SLE can be improved with early diagnosis and prompt treatment of LN. A number of biochemical markers are currently used to clinically assess disease activity in patients; however, they lack sensitivity and specificity for differentiating renal activity and damage in LN. A reliable clinical biomarker that can forecast LN flare and which could be sequentially followed would help to optimize initiation and escalation of therapy at the time of active or relapsing disease. OBJECTIVE This study was carried out to investigate the value of urinary tumor necrosis factor (TNF)-like weak inducer of apoptosis (uTWEAK) as a biomarker for active lupus nephritis. PATIENTS AND METHODS A total of 44 patients with SLE fulfilling the 1997 revised criteria for the classification of SLE as well as 11 age and sex-matched healthy controls were included in this study and subjected to full medical history taking, clinical examination, routine laboratory investigations, measurement of uTWEAK level as well as renal biopsy for patients with active LN. RESULTS The uTWEAK levels were significantly higher in SLE patients with active LN compared to those without or with inactive renal disease and normal healthy subjects.
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Affiliation(s)
- M N Salem
- Internal Medicine Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt.
| | - H A Taha
- Internal Medicine Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | | | - N N Eesa
- Rheumatology and Rehabilitation Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - R A Mohamed
- Clinical Pathology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
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13
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Ahmad F, Döbel T, Schmitz M, Schäkel K. Current Concepts on 6-sulfo LacNAc Expressing Monocytes (slanMo). Front Immunol 2019; 10:948. [PMID: 31191513 PMCID: PMC6540605 DOI: 10.3389/fimmu.2019.00948] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 04/12/2019] [Indexed: 12/25/2022] Open
Abstract
The human mononuclear phagocytes system consists of dendritic cells (DCs), monocytes, and macrophages having different functions in bridging innate and adaptive immunity. Among the heterogeneous population of monocytes the cell surface marker slan (6-sulfo LacNAc) identifies a specific subset of human CD14- CD16+ non-classical monocytes, called slan+ monocytes (slanMo). In this review we discuss the identity and functions of slanMo, their contributions to immune surveillance by pro-inflammatory cytokine production, and cross talk with T cells and NK cells. We also consider the role of slanMo in the regulation of chronic inflammatory diseases and cancer. Finally, we highlight unresolved questions that should be the focus of future research.
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Affiliation(s)
- Fareed Ahmad
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Döbel
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany.,Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, United States
| | - Marc Schmitz
- Institute of Immunology, Faculty of Medicine Carl Gustav Carus, Technische Universtät Dresden, Dresden, Germany.,Partner Site Dresden, National Center for Tumor Diseases (NCT), Dresden, Germany
| | - Knut Schäkel
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
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14
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Liao Z, Ye Z, Xue Z, Wu L, Ouyang Y, Yao C, Cui C, Xu N, Ma J, Hou G, Wang J, Meng Y, Yin Z, Liu Y, Qian J, Zhang C, Ding H, Guo Q, Qu B, Shen N. Identification of Renal Long Non-coding RNA RP11-2B6.2 as a Positive Regulator of Type I Interferon Signaling Pathway in Lupus Nephritis. Front Immunol 2019; 10:975. [PMID: 31130957 PMCID: PMC6509587 DOI: 10.3389/fimmu.2019.00975] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/16/2019] [Indexed: 12/16/2022] Open
Abstract
Objective: Lupus nephritis (LN) is one of the most serious complications of systemic lupus erythematosus (SLE). Type I interferon (IFN-I) is associated with the pathogenesis of LN. Long non-coding RNAs (lncRNAs) have been implicated in the pathogenesis of SLE, however, the roles of lncRNAs in LN are still poorly understood. Here, we identified and investigated the function of LN-associated lncRNA RP11-2B6.2 in regulating IFN-I signaling pathway. Methods: RNA sequencing was used to analyze the expression of lncRNAs in kidney biopsies from LN patients and controls. Antisense oligonucleotides and CRISPRi system or overexpression plasmids and CRISPRa system were used to perform loss or gain of function experiments. In situ hybridization, imaging flow cytometry, dual-luciferase reporter assay, and ATAC sequencing were used to study the functions of lncRNA RP11-2B6.2. RT-qPCR, ELISA, and western blotting were done to detect RNA and protein levels of specific genes. Results: Elevated lncRNA RP11-2B6.2 was observed in kidney biopsies from LN patients and positively correlated with disease activity and IFN scores. Knockdown of lncRNA RP11-2B6.2 in renal cells inhibited the expression of IFN stimulated genes (ISGs), while overexpression of lncRNA RP11-2B6.2 enhanced ISG expression. Knockdown of LncRNA RP11-2B6.2 inhibited the phosphorylation of JAK1, TYK2, and STAT1 in IFN-I pathway, while promoted the chromatin accessibility and the transcription of SOCS1. Conclusion: The expression of lncRNAs is abnormal in the kidney of LN. LncRNA RP11-2B6.2 is a novel positive regulator of IFN-I pathway through epigenetic inhibition of SOCS1, which provides a new therapeutic target to alleviate over-activated IFN-I signaling in LN.
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Affiliation(s)
- Zhuojun Liao
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhizhong Ye
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Zhixin Xue
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lingling Wu
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ye Ouyang
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chao Yao
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chaojie Cui
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ning Xu
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jianyang Ma
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guojun Hou
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jiehua Wang
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yao Meng
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhihua Yin
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Ya Liu
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Qian
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chunyan Zhang
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huihua Ding
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qiang Guo
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bo Qu
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Nan Shen
- Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai, China.,Collaborative Innovation Centre for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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15
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Schwabe C, Rosenstock B, Doan T, Hamilton P, Dunbar PR, Eleftheraki AG, Joseph D, Hilbert J, Schoelch C, Padula SJ, Steffgen J. Safety, Pharmacokinetics, and Pharmacodynamics of Multiple Rising Doses of BI 655064, an Antagonistic Anti-CD40 Antibody, in Healthy Subjects: A Potential Novel Treatment for Autoimmune Diseases. J Clin Pharmacol 2018; 58:1566-1577. [PMID: 30113724 PMCID: PMC6282763 DOI: 10.1002/jcph.1278] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/24/2018] [Accepted: 06/04/2018] [Indexed: 11/19/2022]
Abstract
BI 655064 is a humanized antagonistic anti-cluster of differentiation (CD) 40 monoclonal antibody that selectively blocks the CD40-CD40L interaction. The CD40-CD40L pathway is a promising treatment target for autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, and lupus nephritis. The safety, tolerability, pharmacokinetics, and pharmacodynamics of repeated once-weekly BI 655064 subcutaneous dosing over 4 weeks were evaluated in a multiple-dose study in healthy subjects. Subjects (N = 40) were randomized 4:1 to four sequential BI 655064 dose groups (80, 120, 180, 240 mg) or to placebo. Safety and tolerability, plasma exposure, CD40 receptor occupancy, and CD40L-induced CD54 upregulation were assessed over 64 and 78 days for the 80- to 180-mg and 240-mg dose groups, respectively. BI 655064 exposure increased in a supraproportional manner, due to target-mediated drug clearance, for doses between 80 mg and 120 mg, but was near proportional for doses greater than 120 mg. Terminal half-life ranged between 6 and 8 days. Dose-dependent accumulation of BI 655064 supports the use of a loading dose in future clinical studies. Following 4 weeks of dosing, >90% CD40 receptor occupancy and inhibition of CD54 upregulation were observed at all dose levels, lasting for 17 days after the last dose. BI 655064 was generally well tolerated. There were no serious adverse events and the frequency and intensity of adverse events were similar for BI 655064 and placebo; no dose relationship or relevant signs of an acute immune reaction were observed. These findings support further investigation of BI 655064 as a potential treatment for autoimmune diseases.
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Affiliation(s)
| | | | - Thi Doan
- Boehringer Ingelheim Pty LimitedNorth RydeAustralia
| | | | - P. Rod Dunbar
- School of Biological Sciences and Maurice Wilkins CentreUniversity of AucklandAucklandNew Zealand
| | | | - David Joseph
- Boehringer Ingelheim Pharmaceuticals, Inc.RidgefieldCTUSA
| | - James Hilbert
- Boehringer Ingelheim Pharmaceuticals, Inc.RidgefieldCTUSA
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16
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Wolf SJ, Theros J, Reed TJ, Liu J, Grigorova IL, Martínez-Colón G, Jacob CO, Hodgin JB, Kahlenberg JM. TLR7-Mediated Lupus Nephritis Is Independent of Type I IFN Signaling. THE JOURNAL OF IMMUNOLOGY 2018; 201:393-405. [PMID: 29884703 DOI: 10.4049/jimmunol.1701588] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 05/18/2018] [Indexed: 12/15/2022]
Abstract
Systemic lupus erythematosus is an autoimmune disease characterized by increased type I IFNs, autoantibodies, and inflammatory-mediated multiorgan damage. TLR7 activation is an important contributor to systemic lupus erythematosus pathogenesis, but the mechanisms by which type I IFNs participate in TLR7-driven pathologic conditions remain uncertain. In this study, we examined the requirement for type I IFNs in TLR7-stimulated lupus nephritis. Lupus-prone NZM2328, INZM (which lack a functional type I IFN receptor), and NZM2328 IL-1β-/- mice were treated at 10 wk of age on the right ear with R848 (TLR7 agonist) or control (DMSO). Autoantibody production and proteinuria were assessed throughout treatment. Multiorgan inflammation was assessed at the time of decline in health. Renal infiltrates and mRNA expression were also examined after 14 d of treatment. Both NZM2328 and INZM mice exhibited a decline in survival after 3-4 wk of R848 but not vehicle treatment. Development of splenomegaly and liver inflammation were dependent on type I IFN. Interestingly, autoantibody production, early renal infiltration of dendritic cells, upregulation of IL-1β, and lupus nephritis occurred independent of type I IFN signaling. Development of TLR7-driven lupus nephritis was not abolished by the deletion of IL-1β. Thus, although IFN-α is sufficient to induce nephritis acceleration, our data emphasize a critical role for IFN-independent signaling in TLR7-mediated lupus nephritis. Further, despite upregulation of IL-1β after TLR7 stimulation, deletion of IL-1β is not sufficient to reduce lupus nephritis development in this model.
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Affiliation(s)
- Sonya J Wolf
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109.,Immunology Program, University of Michigan, Ann Arbor, MI 48109
| | - Jonathan Theros
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109
| | - Tammi J Reed
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109
| | - Jianhua Liu
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109
| | - Irina L Grigorova
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109
| | | | - Chaim O Jacob
- University of Southern California Keck School of Medicine, Los Angeles, CA 90033; and
| | - Jeffrey B Hodgin
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109
| | - J Michelle Kahlenberg
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109;
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17
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Olaru F, Döbel T, Lonsdorf AS, Oehrl S, Maas M, Enk AH, Schmitz M, Gröne EF, Gröne HJ, Schäkel K. Intracapillary immune complexes recruit and activate slan-expressing CD16+ monocytes in human lupus nephritis. JCI Insight 2018; 3:96492. [PMID: 29875315 DOI: 10.1172/jci.insight.96492] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 04/24/2018] [Indexed: 12/30/2022] Open
Abstract
Lupus nephritis is a major cause of morbidity in patients with systemic lupus erythematosus. Among the different types of lupus nephritis, intracapillary immune complex (IC) deposition and accumulation of monocytes are hallmarks of lupus nephritis class III and IV. The relevance of intracapillary ICs in terms of monocyte recruitment and activation, as well as the nature and function of these monocytes are not well understood. For the early focal form of lupus nephritis (class III) we demonstrate a selective accumulation of the proinflammatory population of 6-sulfo LacNAc+ (slan) monocytes (slanMo), which locally expressed TNF-α. Immobilized ICs induced a direct recruitment of slanMo from the microcirculation via interaction with Fc γ receptor IIIA (CD16). Interestingly, intravenous immunoglobulins blocked CD16 and prevented cell recruitment. Engagement of immobilized ICs by slanMo induced the production of neutrophil-attracting chemokine CXCL2 as well as TNF-α, which in a forward feedback loop stimulated endothelial cells to produce the slanMo-recruiting chemokine CX3CL1 (fractalkine). In conclusion, we observed that expression of CD16 equips slanMo with a unique capacity to orchestrate early IC-induced inflammatory responses in glomeruli and identified slanMo as a pathogenic proinflammatory cell type in lupus nephritis.
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Affiliation(s)
- Florina Olaru
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Döbel
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Anke S Lonsdorf
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Stephanie Oehrl
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Michael Maas
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Alexander H Enk
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Marc Schmitz
- Institute of Immunology, Medical Faculty, Technische Universität (TU) Dresden, Dresden, Germany.,National Center for Tumor Diseases, University Hospital Carl Gustav Carus, TU Dresden, Germany.,German Cancer Consortium (DKTK), Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany.,Center for Regenerative Therapies Dresden (CRTD), Medical Faculty, TU Dresden, Dresden, Germany
| | - Elisabeth F Gröne
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Hermann-J Gröne
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Knut Schäkel
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
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18
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Increased glomerular Bax/Bcl2 ratio is positively correlated with glomerular sclerosis in lupus nephritis. PATHOPHYSIOLOGY 2018; 25:83-88. [DOI: 10.1016/j.pathophys.2018.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 01/23/2018] [Accepted: 01/30/2018] [Indexed: 11/21/2022] Open
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19
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Scherlinger M, Sisirak V, Richez C, Lazaro E, Duffau P, Blanco P. New Insights on Platelets and Platelet-Derived Microparticles in Systemic Lupus Erythematosus. Curr Rheumatol Rep 2018; 19:48. [PMID: 28718063 DOI: 10.1007/s11926-017-0678-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW Current knowledge on the role of platelets and platelet-derived microparticles (PMPs) on the immune system has been fast-growing. Systemic lupus erythematosus (SLE) is a systemic auto-immune disorder characterized by a loss of tolerance toward nuclear auto-antigens. Although recent studies allowed a better understanding of SLE pathogenesis, there is an urgent need for the development of new treatments and the identification of new biomarkers to assess the disease activity. We describe here the state-of-the-art knowledge linking platelets and PMPs to SLE. RECENT FINDINGS Platelet system activation is a key event in the pathogenesis of SLE. Circulating immune complexes, anti-phospholipid antibodies, and infectious agents such as virus are the main activators of platelets in SLE. Platelet activation can be monitored through different ways such as P-selectin expression, mean platelet volume, or circulating PMP levels, suggesting their potential use as biomarkers. Upon activation, platelets promote type I interferon production, NETosis, dendritic cell activation, and T and B lymphocyte activation, all essential events contributing to the development of SLE. Of interest, platelets also play a fundamental role in SLE organ disease such as the development of cardiovascular, thrombotic, and renal diseases. Finally, we review current knowledge on drugs targeting platelet activation and their potential impact on SLE pathogenesis. Platelets play a major role in SLE pathogenesis and organ disease and represent a great potential for novel biomarkers and drug development.
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Affiliation(s)
- Marc Scherlinger
- Service de Rhumatologie, FHU ACRONIM, Hôpital Pellegrin, Centre Hospitalier Universitaire, place Amélie Raba Léon, 33076, Bordeaux, France.,Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,CNRS-UMR 5164, ImmunoConcept, Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France
| | - Vanja Sisirak
- Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,CNRS-UMR 5164, ImmunoConcept, Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France
| | - Christophe Richez
- Service de Rhumatologie, FHU ACRONIM, Hôpital Pellegrin, Centre Hospitalier Universitaire, place Amélie Raba Léon, 33076, Bordeaux, France.,Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,CNRS-UMR 5164, ImmunoConcept, Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France
| | - Estibaliz Lazaro
- Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,CNRS-UMR 5164, ImmunoConcept, Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,Laboratoire d'Immunologie et Immunogénétique, FHU ACRONIM, Hôpital Pellegrin, Centre Hospitalier Universitaire, place Amélie Raba Léon, 33076, Bordeaux, France
| | - Pierre Duffau
- Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,CNRS-UMR 5164, ImmunoConcept, Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France.,Service de médecine interne, FHU ACRONIM, Hôpital Saint André, Centre Hospitalier Universitaire, 1 rue Jean Burguet, 33076, Bordeaux, France
| | - Patrick Blanco
- Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France. .,CNRS-UMR 5164, ImmunoConcept, Université de Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux, France. .,Laboratoire d'Immunologie et Immunogénétique, FHU ACRONIM, Hôpital Pellegrin, Centre Hospitalier Universitaire, place Amélie Raba Léon, 33076, Bordeaux, France.
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Pedersen HL, Horvei KD, Thiyagarajan D, Norby GE, Seredkina N, Moroni G, Eilertsen GØ, Holdaas H, Strøm EH, Bakland G, Meroni PL, Rekvig OP. Lupus nephritis: low urinary DNase I levels reflect loss of renal DNase I and may be utilized as a biomarker of disease progression. JOURNAL OF PATHOLOGY CLINICAL RESEARCH 2018; 4:193-203. [PMID: 29624903 PMCID: PMC6065113 DOI: 10.1002/cjp2.99] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 01/10/2018] [Accepted: 02/19/2018] [Indexed: 11/21/2022]
Abstract
Renal DNase I is lost in advanced stages of lupus nephritis. Here, we determined if loss of renal DNase I reflects a concurrent loss of urinary DNase I, and whether absence of urinary DNase I predicts disease progression. Mouse and human DNase I protein and DNase I endonuclease activity levels were determined by western blot, gel, and radial activity assays at different stages of the murine and human forms of the disease. Cellular localization of DNase I was analyzed by immunohistochemistry, immunofluorescence, confocal microscopy, and immunoelectron microscopy. We further compared DNase I levels in human native and transplanted kidneys to determine if the disease depended on autologous renal genes, or whether the nephritic process proceeded also in transplanted kidneys. The data indicate that reduced renal DNase I expression level relates to serious progression of lupus nephritis in murine, human native, and transplanted kidneys. Notably, silencing of renal DNase I correlated with loss of DNase I endonuclease activity in the urine samples. Thus, urinary DNase I levels may therefore be used as a marker of lupus nephritis disease progression and reduce the need for renal biopsies.
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Affiliation(s)
- Hege L Pedersen
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Kjersti D Horvei
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Dhivya Thiyagarajan
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Gudrun E Norby
- Department of Rheumatology, OUH-Oslo University Hospital, Oslo, Norway
| | - Natalya Seredkina
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Gabriella Moroni
- Nephrological Unit, Fondazione Ca' Granda IRCCS, Ospedale Maggiore, Milano, Italy
| | - Gro Ø Eilertsen
- Department of Clinical Medicine, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Hallvard Holdaas
- Department of Medicine, OUH-Oslo University Hospital, Oslo, Norway
| | - Erik H Strøm
- Department of Pathology, OUH-Oslo University Hospital, Oslo, Norway
| | - Gunnstein Bakland
- Department of Rheumatology, University Hospital of North Norway, Tromsø, Norway
| | - Pier-Luigi Meroni
- Department of Clinical Sciences and Community Health, University of Milan and IRCCS, Istituto Auxologico Italiano, Milan, Italy
| | - Ole P Rekvig
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
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21
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Abstract
OBJECTIVE This study aimed to evaluate whether urinary monocyte chemoattractant protein-1 (MCP-1) could serve as a biomarker for lupus nephritis (LN). METHODS We performed a meta-analysis to examine the relationship between urinary MCP-1 level and LN in three comparisons: active LN versus inactive LN, active LN versus control, and inactive LN versus control. RESULTS Eight studies of a total of 399 patients with LN (204 with active LN, and 195 with inactive LN) and 130 controls were available for this meta-analysis. The meta-analysis revealed that the urinary MCP-1 level was significantly higher in the active-LN group than in the inactive-LN group (standard mean difference [SMD] = 1.883, 95 % confidence interval [CI] = 0.811-2.954, p = 0.001). The meta-analysis showed that the urinary MCP-1 level was significantly higher in the active-LN group than in the control group (SMD = 3.085, 95 % CI = 1.684-4.485, p = 1.6 × 10-5). Furthermore, stratification by ethnicity showed significantly elevated urinary MCP-1 levels in the active-LN group in Caucasian, Asian, and Egyptian populations (SMD = 2.408, 95 % CI = 1.711-3.105, p < 1.0 × 10-8; SMD = 1.020, 95 % CI = 0.623-2.153, p = 4.6 × 10-7; and SMD = 7.370, 95 % CI = 1.467-2.157, p = 5.9 × 10-5, respectively). The meta-analysis indicated that the urinary MCP-1 level was also significantly higher in the inactive-LN group than in the control group (SMD = 1.812, 95 % CI = 0.628-2.996, p = 0.003). CONCLUSIONS The meta-analysis demonstrated that urinary MCP-1 was significantly higher in patients with active LN than in those with inactive LN and control subjects, and the patients with inactive LN showed significantly higher urinary MCP-1 levels than the controls.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University Medical Center, Korea University College of Medicine, 73 Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea.
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University Medical Center, Korea University College of Medicine, 73 Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea
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Yin P, Zhou Y, Li B, Hong L, Chen W, Yu X. Effect of low and high HDL-C levels on the prognosis of lupus nephritis patients: a prospective cohort study. Lipids Health Dis 2017; 16:232. [PMID: 29212518 PMCID: PMC5719733 DOI: 10.1186/s12944-017-0622-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 11/22/2017] [Indexed: 11/16/2022] Open
Abstract
Background Few data has been available on the effect of serum HDL-C levels on the prognosis of lupus nephritis (LN) patients. The present study therefore aimed to explore the effect of serum HDL-C levels on LN patients. Methods We included 775 patients with follow-up information registered in an LN database between 1 January 2006 and 31 December 2011. The patients were divided into groups with low, intermediate and high HDL-C, according to NCEP ATPIII criteria. Cox regression analyses were used to explore the effects of HDL-C levels on end-stage renal disease (ESRD), all-cause mortality and cardiovascular disease (CVD) mortality. Results During a median follow-up of 56 months (3–206 months), 71 (9.2%) had ESRD. 84 (10.8%) deaths occurred, 17 (20.2%) of which were due to CVD. There was no statistically significant association of HDL-C category or continuous HDL-C levels with ESRD in the total cohort, but in subgroup analyses by eGFR, with each 0.1 mmol/L increase in HDL-C level, adjusted HRs for ESRD were 0.92 (95% CI: 0.83–1.04, P = 0.173) for eGFR ≥60 ml/min/1.73m2 and 1.11 (95% CI: 1.01–1.23, P = 0.036) for eGFR <60 ml/min/1.73m2. The effect of the interaction between eGFR category and serum HDL-C level on ESRD was statistically significant (β = −1.738, P = 0.005). Low HDL-C was associated with all-cause mortality (HR = 2.16, 95% CI: 1.06–4.40, P = 0.033) with intermediate HDL-C as reference category after adjusting for several variables. Conclusions Our results demonstrate that high HDL-C levels were associated with increased risk of ESRD in LN patients with advanced renal dysfunction. While low HDL-C levels were associated with increased risk of all-cause mortality in LN patients. Trial registration ClinicalTrials.gov Identifier: NCT03001973, 22 December 2016 retrospectively registered. Electronic supplementary material The online version of this article (10.1186/s12944-017-0622-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Peiran Yin
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, Guangdong, 510080, China
| | - Ying Zhou
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, Guangdong, 510080, China
| | - Bin Li
- Clinical Research Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Lingyao Hong
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, Guangdong, 510080, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China. .,Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, Guangdong, 510080, China.
| | - Xueqing Yu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, Guangdong, 510080, China.,Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
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23
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Horvei KD, Pedersen HL, Fismen S, Thiyagarajan D, Schneider A, Rekvig OP, Winkler TH, Seredkina N. Lupus nephritis progression in FcγRIIB-/-yaa mice is associated with early development of glomerular electron dense deposits and loss of renal DNase I in severe disease. PLoS One 2017; 12:e0188863. [PMID: 29190833 PMCID: PMC5708736 DOI: 10.1371/journal.pone.0188863] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/14/2017] [Indexed: 12/20/2022] Open
Abstract
FcγRIIB-/-yaa mice develop severe lupus glomerulonephritis due to lack of an inhibitory immune cell receptor combined with a Y-chromosome linked autoimmune accelerator mutation. In the present study, we have investigated nephritis development and progression in FcγRIIB-/-yaa mice to find shared features with NZB/NZW F1 lupus prone mice and human disease. We sacrificed 25 male FcγRIIB-/-yaa mice at various disease stages, and grouped them according to activity and chronicity indices for lupus nephritis. Glomerular morphology and localization of electron dense deposits containing IgG were further determined by immune electron microscopy. Renal DNase I and pro-inflammatory cytokine mRNA levels were measured by real-time quantitative PCR. DNase I protein levels was assessed by immunohistochemistry and zymography. Our results demonstrate early development of electron dense deposits containing IgG in FcγRIIB-/-yaa mice, before detectable levels of serum anti-dsDNA antibodies. Similar to NZB/NZW F1, electron dense deposits in FcγRIIB-/-yaa progressed from being confined to the mesangium in the early stage of lupus nephritis to be present also in capillary glomerular basement membranes. In the advanced stage of lupus nephritis, renal DNase I was lost on both transcriptional and protein levels, which has previously been shown in NZB/NZW F1 mice and in human disease. Although lupus nephritis appears on different genetic backgrounds, our findings suggest similar processes when comparing different murine models and human lupus nephritis.
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Affiliation(s)
- Kjersti Daae Horvei
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Hege Lynum Pedersen
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Silje Fismen
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Dhivya Thiyagarajan
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Andrea Schneider
- Department of Biology, Nikolaus-Fiebiger-Zentrum für Molekulare Medizin, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ole Petter Rekvig
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Thomas H Winkler
- Department of Biology, Nikolaus-Fiebiger-Zentrum für Molekulare Medizin, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Natalya Seredkina
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
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Albach FN, Wagner F, Hüser A, Igel J, Joseph D, Hilbert J, Schoelch C, Padula SJ, Steffgen J. Safety, pharmacokinetics and pharmacodynamics of single rising doses of BI 655064, an antagonistic anti-CD40 antibody in healthy subjects: a potential novel treatment for autoimmune diseases. Eur J Clin Pharmacol 2017; 74:161-169. [PMID: 29127458 PMCID: PMC5765193 DOI: 10.1007/s00228-017-2362-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/27/2017] [Indexed: 10/29/2022]
Abstract
PURPOSE The CD40-CD40L pathway is a promising treatment target for autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus and lupus nephritis. The safety, pharmacokinetics and pharmacodynamics of BI 655064, a novel humanised antagonistic anti-CD40 monoclonal antibody, were investigated in this first-in-human trial. METHODS Healthy male subjects (n = 72) were randomised 3:1, within each BI 655064 dose group, to single intravenous (IV; 0.2-120 mg) or subcutaneous (SC; 40-120 mg) doses of BI 655064 or placebo. Safety, plasma exposure, CD40 receptor occupancy and CD40L-induced CD54 upregulation were assessed over 12 weeks. RESULTS Adverse events (AEs) were reported in 43% of subjects (n = 31). Frequency and intensity of AEs were generally similar between BI 655064 and placebo and showed no dose relationship. The most frequent AEs were headache and nasopharyngitis. One mild rash and one local reaction occurred with SC BI 655064; two serious AEs were reported, both judged unrelated to BI 655064. Pharmacokinetic evaluation demonstrated a more than proportional increase in plasma exposure relative to BI 655064 dose, with a terminal half-life between 4 h and 4 days IV and approximately 5 days SC; doses ≥ 20 mg IV and 120 mg SC showed > 90% CD40 receptor occupancy and inhibition of CD54 upregulation, which lasted 7 days in the 120 mg IV and SC groups. CONCLUSIONS Single doses up to 120 mg BI 655064 IV and SC were well tolerated and showed a high potential to block the CD40-CD40L pathway, supporting further clinical development of BI 655064 in patients with autoimmune disease. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01510782.
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Affiliation(s)
| | - Frank Wagner
- Charité Research Organisation GmbH, Berlin, Germany
| | | | - Julia Igel
- Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Str. 65, Biberach/Riss, Germany
| | - David Joseph
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT, USA
| | - James Hilbert
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT, USA
| | - Corinna Schoelch
- Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Str. 65, Biberach/Riss, Germany
| | - Steven J Padula
- Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim, Germany
| | - Jürgen Steffgen
- Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Str. 65, Biberach/Riss, Germany.
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25
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Tangtanatakul P, Thammasate B, Jacquet A, Reantragoon R, Pisitkun T, Avihingsanon Y, Leelahavanichkul A, Hirankarn N. Transcriptomic profiling in human mesangial cells using patient-derived lupus autoantibodies identified miR-10a as a potential regulator of IL8. Sci Rep 2017; 7:14517. [PMID: 29109423 PMCID: PMC5673966 DOI: 10.1038/s41598-017-15160-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 10/23/2017] [Indexed: 11/09/2022] Open
Abstract
Autoantibody-mediated inflammation directed at resident kidney cells mediates lupus nephritis (LN) pathogenesis. This study investigated the role of miRNA in human mesangial cells (HMCs) stimulated with auto anti-dsDNA immunoglobulin (Ig)G antibodies. HMCs were treated with antibodies purified from active LN patients or non-specific IgG controls in the presence of normal serum. Aberrant miRNA was screened using high throughput sequencing. Anti-dsDNA IgG up-regulated 103 miRNAs and down-regulated 30 miRNAs. The miRNAs regulated genes in the cell cycle, catabolic processes, regulation of transcription and apoptosis signalling. miR-10a was highly abundant in HMCs but was specifically downregulated upon anti-dsDNA IgG induction. Interestingly, the expression of miR-10a in kidney biopsies from class III and IV LN patients (n = 26) was downregulated compared with cadaveric donor kidneys (n = 6). Functional studies highlighted the downstream regulator of miR-10a in the chemokine signalling and cell proliferation or apoptosis pathways. Luciferase assay confirmed for the first time that IL8 was a direct target of miR-10a in HMCs. In conclusion, anti-dsDNA IgG Ab down-regulated miR-10a expression in HMCs resulting in the induction of various target genes involved in HMC proliferation and chemokine expression.
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Affiliation(s)
- Pattarin Tangtanatakul
- Medical Microbiology Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Boonyakiat Thammasate
- Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Alain Jacquet
- Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Rangsima Reantragoon
- Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Trairak Pisitkun
- Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Chulalongkorn University Systems Biology (CUSB), Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Yingyos Avihingsanon
- Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Asada Leelahavanichkul
- Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nattiya Hirankarn
- Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
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Diaz-Rizo V, Bonilla-Lara D, Gonzalez-Lopez L, Sanchez-Mosco D, Fajardo-Robledo NS, Perez-Guerrero EE, Rodriguez-Jimenez NA, Saldaña-Cruz AM, Vazquez-Villegas ML, Gomez-Bañuelos E, Vazquez-Del Mercado M, Cardona-Muñoz EG, Cardona-Muller D, Trujillo X, Huerta M, Salazar-Paramo M, Gamez-Nava JI. Serum levels of adiponectin and leptin as biomarkers of proteinuria in lupus nephritis. PLoS One 2017; 12:e0184056. [PMID: 28898254 PMCID: PMC5595281 DOI: 10.1371/journal.pone.0184056] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/17/2017] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION There are controversial results about the role of serum leptin and adiponectin levels as biomarkers of the severity of proteinuria in lupus nephritis. OBJECTIVE The aim of this study was to evaluate the relationship between serum leptin and adiponectin levels with severity of proteinuria secondary to lupus nephritis (LN). METHODS In a cross-sectional study, 103 women with systemic lupus erythematosus (SLE) were evaluated for kidney involvement. We compared 30 SLE patients with LN, all of them with proteinuria, versus 73 SLE patients without renal involvement (no LN). A comprehensive set of clinical and laboratory variables was assessed, including serum levels of leptin and adiponectin by ELISA. Multivariate analyses were used to adjust for potential confounders associated with proteinuria in LN. RESULTS We found higher adiponectin levels in the LN group compared with the no LN group (20.4 ± 10.3 vs 15.6 ± 7.8 μg/mL; p = 0.02), whereas no differences were observed in leptin levels (33.3 ± 31.4 vs 22.5 ± 25.5 ng/mL; p = 0.07). Severity of proteinuria correlated with an increase in adiponectin levels (r = 0.31; p = 0.001), but no correlation was observed with leptin. Adiponectin levels were not related to anti-dsDNA or anti-nucleosome antibodies. In the logistic regression, adiponectin levels were associated with a high risk of proteinuria in SLE (OR = 1.06; 95% CI 1.01-1.12; p = 0.02). Instead, leptin was not associated with LN. CONCLUSION These findings indicate that adiponectin levels are useful markers associated with proteinuria in LN. Further longitudinal studies are required to identify if these levels are predictive of renal relapse.
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Affiliation(s)
- Valeria Diaz-Rizo
- Unidad de Investigacion Biomedica 02, Hospital de Especialidades, Centro Medico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
- Programa de Posgrado de Ciencias Medicas, Universidad de Colima, Colima, Mexico
- Programa de Posgrado en Farmacologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - David Bonilla-Lara
- Programa de Posgrado en Farmacologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
- Departamento de Medicina Interna-Reumatologia, Hospital General Regional 110 (HGR 110), IMSS, Guadalajara, Jalisco, Mexico
| | - Laura Gonzalez-Lopez
- Programa de Posgrado en Farmacologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
- Departamento de Medicina Interna-Reumatologia, Hospital General Regional 110 (HGR 110), IMSS, Guadalajara, Jalisco, Mexico
| | - Dalia Sanchez-Mosco
- Programa de Posgrado de Ciencias Medicas, Universidad de Colima, Colima, Mexico
- Departamento de Medicina Interna-Reumatologia, Hospital General Regional 110 (HGR 110), IMSS, Guadalajara, Jalisco, Mexico
| | - Nicte S. Fajardo-Robledo
- Laboratorio de Investigación y Desarrollo Farmacéutico, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Edsaul E. Perez-Guerrero
- Programa de Posgrado en Farmacologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
- Departamento de Farmacobiologia, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | | | - A. Miriam Saldaña-Cruz
- Departamento de Ciencias Biomedicas, Centro Universitario Tonala, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - M. Luisa Vazquez-Villegas
- Departamento de Epidemiologia, Unidad Medica Familiar 4 y 8, IMSS, Guadalajara, Jalisco, Mexico
- Programa de Posgrado en Salud Publica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Eduardo Gomez-Bañuelos
- Instituto de Investigacion en Reumatologia y Sistema Musculoesqueletico, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Monica Vazquez-Del Mercado
- Servicio de Reumatologia, Division de Medicina Interna OPD, Hospital Civil Juan I. Menchaca, Guadalajara, Jalisco, Mexico
| | - E. German Cardona-Muñoz
- Instituto de Terapeutica Experimental y Clinica, Departamento de Fisiologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - David Cardona-Muller
- Instituto de Terapeutica Experimental y Clinica, Departamento de Fisiologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Xochitl Trujillo
- Programa de Posgrado de Ciencias Medicas, Universidad de Colima, Colima, Mexico
| | - Miguel Huerta
- Programa de Posgrado de Ciencias Medicas, Universidad de Colima, Colima, Mexico
| | - Mario Salazar-Paramo
- Division de Investigacion en Salud, Unidad Medica de Alta Especialidad, Hospital de Especialidades, Centro Medico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Jorge I. Gamez-Nava
- Unidad de Investigacion Biomedica 02, Hospital de Especialidades, Centro Medico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
- Programa de Posgrado en Farmacologia, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
- * E-mail:
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Ge F, Wang F, Yan X, Li Z, Wang X. Association of BAFF with PI3K/Akt/mTOR signaling in lupus nephritis. Mol Med Rep 2017; 16:5793-5798. [PMID: 28849060 PMCID: PMC5865758 DOI: 10.3892/mmr.2017.7367] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 06/16/2017] [Indexed: 12/22/2022] Open
Abstract
Systemic lupus erythematosus is a connective tissue disease characterized by autoimmune inflammation, which leads to specific and nonspecific immune disorders with the formation of various autoantibodies by activated B cells. B-cell-activating factor (BAFF) is secreted by macrophages and activated T cells, and is responsible for the proliferation, maturation and differentiation of B cells. However, the mechanism of BAFF involvement in lupus nephritis (LN) remains unclear. The aim of the present study was to investigate the association between BAFF and phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) signaling in order to elucidate the pathogenesis of LN. In the present study, 18 patients with LN and 20 controls were included. The clinical data were analyzed and plasma levels of BAFF were measured using an ELISA. The mRNA and protein levels of BAFF, phosphorylated (p)-PI3K, p-Akt and p-mTOR in kidney tissues were measured using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blotting. Plasma BAFF levels were significantly increased in patients with LN compared with the controls (P<0.001). mRNA and protein levels of BAFF, p-PI3K, p-Akt and p-mTOR in kidney tissue were significantly increased in patients with LN compared with the controls (all P<0.001). mRNA and protein levels of BAFF in the kidney tissues of patients with LN were positively correlated with the levels of p-PI3K, p-Akt and p-mTOR. The results of the present study revealed a correlation between BAFF and the PI3K/Akt/mTOR signaling pathway, and it is hypothesized that they are involved in the pathogenesis of LN.
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Affiliation(s)
- Fengmei Ge
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Fangfang Wang
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Xiuqing Yan
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Zhao Li
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Xuebin Wang
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
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28
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Xu R, Li Q, Liu R, Shen J, Li M, Zhao M, Wang M, Liao Q, Mao H, Li Z, Zhou N, Yin P, Li Y, Tang X, Wu T, Zhong Z, Wang Y, Ai Z, Wang O, Chen N, Yang X, Fang J, Fu P, Gu J, Ye K, Chen J, Dai L, Liu H, Liu Z, Liao Y, Wan J, Ding G, Zhao J, Zhang H, Fu S, Sun L, Zhang X, Yang H, Wang J, Wang J, Liu J, Li Y, Yu X. Association Analysis of the MHC in Lupus Nephritis. J Am Soc Nephrol 2017; 28:3383-3394. [PMID: 28754791 DOI: 10.1681/asn.2016121331] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Accepted: 05/29/2017] [Indexed: 02/05/2023] Open
Abstract
Lupus nephritis (LN) is one of the most prevalent and serious complications of SLE, with significant effects on patient and renal survival. Although a large number of genetic variants associated with SLE have been identified, biomarkers that correlate with LN are extremely limited. In this study, we performed a comprehensive sequencing analysis of the whole MHC region in 1331 patients with LN and 1296 healthy controls and validated the independent associations in another 950 patients with LN and 1000 controls. We discovered five independent risk variants for LN within the MHC region, including HLA-DRβ1 amino acid 11 (Pomnibus<0.001), HLA-DQβ1 amino acid 45 (P<0.001; odds ratio, 0.58; 95% confidence interval, 0.52 to 0.65), HLA-A amino acid 156 (Pomnibus<0.001), HLA-DPβ1 amino acid 76 (Pomnibus<0.001), and a missense variant in PRRC2A (rs114580964; P<0.001; odds ratio, 0.38; 95% confidence interval, 0.30 to 0.49) at genome-wide significance. These data implicate aberrant peptide presentation by MHC classes 1 and 2 molecules and sex hormone modulation in the development of LN.
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Affiliation(s)
- Ricong Xu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China.,Department of Nephrology, Shenzhen Second People's Hospital and the First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Qibin Li
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Rongjun Liu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China.,Nephrology and Rheumatology Department, Guangzhou Panyu Central Hospital, Guangzhou, Guangdong, China
| | - Juan Shen
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Ming Li
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Minghui Zhao
- Renal Division, Peking University First Hospital, Peking University, Institute of Nephrology, Beijing, China
| | - Meng Wang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Qijun Liao
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Haiping Mao
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Zhijian Li
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Na Zhou
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Peiran Yin
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Yue Li
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Xueqing Tang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Tian Wu
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Zhong Zhong
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Yan Wang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Zhen Ai
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China
| | - Ou Wang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Nan Chen
- Department of Nephrology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | | | | | - Ping Fu
- Department of Nephrology, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jieruo Gu
- Department of Rheumatology, The Third Affiliated Hospital and
| | - Kun Ye
- Department of Nephrology, The People's Hospital of Guangxi Autonomous Region, Nanning, Guangxi, China
| | - Jian Chen
- Department of Nephrology, Fuzhou General Hospital of Nanjing Military Command, Fuzhou, Fujian, China
| | - Lie Dai
- Department of Rheumatology and Clinical Immunology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Huafeng Liu
- Institute of Nephrology, Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Zhangsuo Liu
- Department of Nephrology, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Yunhua Liao
- Department of Nephrology, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - Jianxin Wan
- Department of Nephrology, The First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
| | - Guohua Ding
- Department of Nephrology, Renmin Hospital, Wuhan University, Wuhan, Hubei, China
| | - Jinghong Zhao
- Department of Nephrology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Hao Zhang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shuxia Fu
- Department of Nephrology, The Second Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Liangdan Sun
- Institute of Dermatology and Department of Dermatology, No. 1 Hospital and.,Collaborative Innovation Center of Complex and Severe Skin Disease, Anhui Medical University, Hefei, Anhui, China
| | - Xuejun Zhang
- Collaborative Innovation Center of Complex and Severe Skin Disease, Anhui Medical University, Hefei, Anhui, China.,Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Huanming Yang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China.,James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - Jian Wang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China.,James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - Jun Wang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China.,Department of Biology, University of Copenhagen, Copenhagen, Denmark.,Institute of Dermatology and Department of Dermatology, No. 1 Hospital and
| | - Jianjun Liu
- Institute of Dermatology and Department of Dermatology, No. 1 Hospital and.,Princess Al Jawhara Albrahim Center of Excellence in the Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia; and.,School of Biological Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Yingrui Li
- BGI Genomics, BGI-Shenzhen, Shenzhen, China;
| | - Xueqing Yu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Key Laboratory of Nephrology, Ministry of Health, Guangzhou, Guangdong, China; .,Institute of Nephrology, Guangdong Medical University, Zhanjiang, Guangdong, China
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Laurent L, Le Fur A, Le Bloas R, Néel M, Mary C, Moreau A, Poirier N, Vanhove B, Fakhouri F. Prevention of lupus nephritis development in NZB/NZW mice by selective blockade of CD28. Eur J Immunol 2017. [DOI: 10.1002/eji.201746923] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Laetitia Laurent
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
| | - Awena Le Fur
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
- Department of nephrology and immunology; Centre Hospitalier Universitaire; Nantes France
| | - Rozenn Le Bloas
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
| | - Mélanie Néel
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
| | - Caroline Mary
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
- OSE Immunotherapeutics; Nantes France
| | - Anne Moreau
- Department of pathology; Centre Hospitalier Universitaire; Nantes France
| | - Nicolas Poirier
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
- OSE Immunotherapeutics; Nantes France
| | - Bernard Vanhove
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
- OSE Immunotherapeutics; Nantes France
| | - Fadi Fakhouri
- INSERM UMR 1064; Nantes France
- Institut de Transplantation Urologie Néphrologie (ITUN); Université de Nantes; Nantes France
- Department of nephrology and immunology; Centre Hospitalier Universitaire; Nantes France
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30
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Zhu Y, Xue Z, Di L. Regulation of MiR-146a and TRAF6 in the Diagnose of Lupus Nephritis. Med Sci Monit 2017; 23:2550-2557. [PMID: 28549054 PMCID: PMC5455804 DOI: 10.12659/msm.900667] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Lupus nephritis (LN) is a major complication of systemic lupus erythematosus (SLE). This study tested miR-146a and its target gene TRAF6 expression in LN patients and discussed their relationship with LN. MATERIAL AND METHODS One hundred twenty-eight LN patients and 30 healthy controls were enrolled in this study. MiR-146a and TRAF6 expression in peripheral blood mononuclear cells (PBMCs) were detected. Serum cytokines content was determined by ELISA. The diagnostic role of miR-146a and TRAF6 in LN activity was evaluated by ROC curve. The impact of miR-146a and TRAF6 on end-stage renal disease (ESRD) was compared by survival curve. The effect of miR-146a and TRAF6 on LN recurrence was analyzed. RESULTS Compared with healthy controls, miR-146a expression was significantly reduced and TRAF6 was upregulated in LN patients. The expression was related to LN activity. MiR-146a expression was negatively correlated, whereas TRAF6 was positively correlated with serum IL-1β, IL-6, IL-8, and TNF-α activity. The area under the ROC curve (AUC) of miR-146a and TRAF6 on the diagnosis of LN was 0.821 and 0.897, respectively. The AUC of miR-146a and TRAF6 on LN activity differentiation was 0.921 and 0.872, respectively. Downregulation of miR-146a and upregulation of TRAF6 increased the incidence of ESRD progression. Downregulation of miR-146a and upregulation of TRAF6 elevated the possibility of recurrence within one year. CONCLUSIONS MiR-146a declined, while TRAF6 increased in LN patients compared with healthy controls. Their expression can be used to effectively differentiate LN and evaluate activity. MiR-146a reduction and TRAF6 upregulation increased the possibility of ESRD progress and recurrence within one year.
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Affiliation(s)
- Yunfeng Zhu
- Department of Emergency, Linyi People's Hospital, Linyi, Shandong, China (mainland)
| | - Zhenzhen Xue
- Department of Emergency, Linyi People's Hospital, Linyi, Shandong, China (mainland)
| | - Lizhe Di
- Department of Emergency, Linyi People's Hospital, Linyi, Shandong, China (mainland)
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31
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Zhao X, Hao J, Duan H, Rong Z, Li F. Phosphoinositide 3-kinase/protein kinase B/periostin mediated platelet-derived growth factor-induced cell proliferation and extracellular matrix production in lupus nephritis. Exp Biol Med (Maywood) 2016; 242:160-168. [PMID: 27590500 DOI: 10.1177/1535370216668050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In the present study, the effect and mechanism of periostin on renal proliferation and extracellular matrix accumulation of lupus mice were investigated. MRL /lpr mice, known as lupus mice, were revealed to show enhanced periostin, proliferating cell nuclear antigen (PCNA), and extracellular matrix accumulation in the kidney accompanied by increased serum platelet-derived growth factor (PDGF). Again, cultured mouse mesangial cells (MMCs) were treated with PDGF, then periostin, and PCNA and secreted fibronectin were detected. The results showed that intracellular periostin and PCNA were respectively enhanced by 2.691 and 2.308 times in PDGF-treated MMC cells at 6 h after stimulation. In addition, secreted fibronectin was increased by 1.442 times. Next, the transfection of periostin shRNA vector in PDGF-stimulated MMC cells effectively suppressed periostin, PCNA and secreted fibronectin by 45.27%, 47.75%, and 39.95%, compared with PDGF-stimulated cells transfected with control vector. Furthermore, it was found that PDGF increased the expression of phospho-Akt (Ser 473) from 30 min to 6 h in MMCs. LY294002 effectively inhibited phospho-Akt (Ser 473) expression caused by PDGF stimulation. Then, periostin, PCNA, and fibronectin were respectively decreased by 69.61%, 46.00%, and 46.20%. In the end, phosphoinositide 3-kinase/protein kinase B/periostin was suggested to mediate PDGF-induced cell proliferation and extracellular matrix production in lupus nephritis.
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Affiliation(s)
- Xue Zhao
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China.,2 Department of Pediatrics, the 2nd Affiliated Hospital of Hebei Medical University, Shijiazhuang 050017, China
| | - Jun Hao
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China
| | - Huijun Duan
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China
| | - Zanhua Rong
- 2 Department of Pediatrics, the 2nd Affiliated Hospital of Hebei Medical University, Shijiazhuang 050017, China
| | - Fan Li
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China
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32
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Shakweer MM, Behairy M, Elhefnawy NG, Elsaid TW. Value of Foxp3 expressing T-regulatory cells in renal tissue in lupus nephritis; an immunohistochemical study. J Nephropathol 2016; 5:105-10. [PMID: 27540538 PMCID: PMC4961819 DOI: 10.15171/jnp.2016.19] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 06/28/2016] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Forkhead box P3 (Foxp3) functions as a master regulator in the development and function of T-regulatory (Treg) cells. Recent studies have shown that autoimmune diseases including systemic lupus erythematosus (SLE) are associated with an imbalance with the Treg cells and T helper (Th) subtypes. OBJECTIVES To evaluate immunohistochemical expression of Foxp3 positive Treg cells in lupus nephritis (LN) and analyze its association with clinicopathologic parameters. MATERIALS AND METHODS Renal biopsy specimens of 50 patients with LN were studied. Specimens were divided into; group A; 25 LN cases without proliferative activity (Class II and V) and group B: 25 cases with proliferative activity (Class III and IV). Immunohistochemical staining for anti-human Foxp3 antibody and grading from grade 0 to grade 3 was done. RESULTS Foxp3 expression in group A was (grade 0 in 14 [56.0%], grade +1 in 11 [44.0 %]) in comparison to group B (grade +1 in 6 [24.0%], grade +2 in 11 [44.0%] and grade +3 in 8 [32.0%]) (P < 0.001). Foxp3 expression was significantly correlated to National Institutes of Health (NIH) activity and chronicity indices (P < 0.05), as well as serum creatinine (P < 0.01) in both groups A and B and there was a highly significant correlation with proteinuria (P < 0.01) in group B with proliferative LN. CONCLUSIONS Immunohistochemical Foxp3 expression in renal tissue was higher in proliferative versus non-proliferative LN and is associated with activity and severity of LN. Further studies are needed to determine its prognostic value in LN.
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Affiliation(s)
- Marwa M Shakweer
- Pathology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Maha Behairy
- Internal Medicine and Nephrology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Nadia G Elhefnawy
- Pathology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Tamer W Elsaid
- Internal Medicine and Nephrology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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33
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Abdel-Maksoud MA, Abdel-Ghaffar FA, El-Amir A, Badr G, Al-Quraishy S. Altered renal immune complexes deposition in female BWF1 lupus mice following Plasmodium chabaudi infection. Saudi J Biol Sci 2016; 25:1609-1616. [PMID: 30591777 PMCID: PMC6303185 DOI: 10.1016/j.sjbs.2016.05.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 05/15/2016] [Accepted: 05/16/2016] [Indexed: 11/19/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a prototypic autoimmune disease that has a mysterious relationship with malaria infection. The current study was designated to compare between the effect of the live and the gamma irradiated Plasmodium chabaudi infection on BWF1 lupus murine model. A total of 30 female BWF1 mice were randomly divided into three groups (10 mice/group) as follows: group (I) lupus group (lupus non infected); group (II) live malaria infected group (lupus + live malaria infection); and group (III) irradiated malaria-infected group (lupus + gamma irradiated malaria infection). Live P. chabaudi infection was accompanied with a decrease in survival rate and food consumption in comparison to the control group of mice while gamma irradiated P. chabaudi -infection was unable to do this effect. Additionally, live P. chabaudi infection was accompanied with an increased level of proteinuria and increased rate of immune complexes deposition in kidney. Moreover, infection with live, but not gamma-irradiated P. chabaudi was accompanied with an increase in nitric oxide (NO), hydrogen peroxide (H2O2), and malondialdehyde (MDA) levels in plasma of lupus mice. The levels of both total cholesterol and triglycerides in plasma of lupus mice after live P. chabaudi infection were obviously decreased in comparison to the control group. On the other hand, gamma-irradiated P. chabaudi infection resembled the control group. Our data revealed that infection of lupus mice with live but not gamma-irradiated P. chabaudi has several histological and biochemical effects.
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Affiliation(s)
- Mostafa A. Abdel-Maksoud
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
- Zoology Department, Faculty of Science, Cairo University, Cairo 61616, Egypt
- Corresponding author at: Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. Tel.: +966 507927800; fax: +966 14679781.
| | | | - Azza El-Amir
- Zoology Department, Faculty of Science, Cairo University, Cairo 61616, Egypt
| | - Gamal Badr
- Laboratory of Immunology & Molecular Physiology, Zoology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Saleh Al-Quraishy
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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34
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Novelli R, Gagliardini E, Ruggiero B, Benigni A, Remuzzi G. Another Piece of the Puzzle of Podocyte B7-1 Expression: Lupus Nephritis. Nephron Clin Pract 2016; 133:129-38. [PMID: 27198457 DOI: 10.1159/000446324] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/06/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Lupus nephritis (LN) is a frequent complication and a major predictor of poor prognosis of systemic lupus erythematosus. Immune complex deposition and T cell infiltration are crucial events in LN pathogenesis. B7-1 (CD80), normally expressed by antigen-presenting cells, is one of the major co-stimulators of T-cell activation through the binding with its counter-receptors CD28 and cytotoxic T-lymphocyte antigen-4. Unexpectedly, B7-1 induction was described at the podocyte level in patients affected by different renal diseases, including LN. These observations suggested a novel exciting function for B7-1 as a biomarker of podocyte injury, and hence that B7-1 inhibitory drugs could serve as podocyte-targeted treatment of intractable renal diseases. However, subsequent studies hardly questioned the reliability of B7-1 detection assays and the therapeutic efficacy of B7-1 blockade in proteinuric patients, casting doubts on B7-1 expression by podocytes. Here, we thoroughly investigated whether B7-1 was indeed expressed by podocytes in LN, before even considering employing B7-1 blockade in patients with severe manifestations of LN and unfavourable prognosis. METHODS Applying different immunohistochemical assays with 4 primary antibodies, we analysed kidney biopsies from 42 LN patients at different stages of the disease, and from NZB/NZW mice, an LN model. RESULTS B7-1 was not induced in podocytes in human and murine LN; instead its expression was confined to infiltrating inflammatory cells. CONCLUSION B7-1 is not expressed by podocytes in LN. A renoprotective effect of B7-1 blockade in LN patients cannot be ruled out but, if confirmed, cannot be the result of an effect on podocyte B7-1.
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Affiliation(s)
- Rubina Novelli
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso, Bergamo, Italy
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35
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El-Shereef RR, Lotfi A, Abdel-Naeam EA, Tawfik H. Serum and Urinary Interleukin-6 in Assessment of Renal Activity in Egyptian Patients with Systemic Lupus Erythematosus. CLINICAL MEDICINE INSIGHTS-ARTHRITIS AND MUSCULOSKELETAL DISORDERS 2016; 9:29-36. [PMID: 26966395 PMCID: PMC4782971 DOI: 10.4137/cmamd.s32269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/08/2015] [Accepted: 11/15/2015] [Indexed: 11/13/2022]
Abstract
AIM OF THE WORK This study investigates whether serum and urinary interleukin-6 (IL-6) represent an early marker of kidney involvement and assesses the difference between them and renal biopsy in lupus nephritis (LN). PATIENTS AND METHODS A total of 60 systemic lupus erythematosus (SLE) patients were compared to 20 healthy controls. Urinary and serum IL-6 were measured in both patients and controls. In addition, renal biopsy was done prior or shortly after urine and blood sampling; the results were classified according to the International Society of Nephrology/Renal Pathology Society classification of LN by recording the activity score and chronicity score for each sample. RESULTS There was a significant higher level of urinary IL-6 in the SLE patients with biopsy-proven LN than in those without LN and those of the control group. However, no significant difference was reported between the three groups as regards serum IL-6. A strong positive correlation was found between urinary IL-6 and renal disease activity based on the renal SLE disease activity index (SLEDAI) score with no significant correlation regarding the extra renal SLEDAI. Urinary IL-6 was positively correlated with renal biopsy results and with its activity scores but weakly correlated with the chronicity scores. CONCLUSION Urinary IL-6 may provide a simple noninvasive potential marker of disease activity of renal involvement in adult patients with SLE.
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Affiliation(s)
- Rawhya R El-Shereef
- Department of Rheumatology and Rehabilitation, Minia University, Minia, Egypt
| | - Ahmed Lotfi
- Department of Rheumatology and Rehabilitation, Minia University, Minia, Egypt
| | | | - Heba Tawfik
- Department of Histopathology, Faculty of Medicine, Minia University, Minia, Egypt
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36
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Rituximab in lupus nephritis: A non-systematic review. ACTA ACUST UNITED AC 2016; 12:210-5. [PMID: 26906063 DOI: 10.1016/j.reuma.2016.01.001] [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: 07/14/2015] [Revised: 12/19/2015] [Accepted: 01/15/2016] [Indexed: 11/21/2022]
Abstract
Lupus nephritis (LN) is a common and severe complication in patients with lupus. Current therapy is based on immunosuppressive drugs and glucocorticoids. Recently, rituximab has been proposed as an alternative treatment for LN. Rituximab is a monoclonal antibody directed against the CD20 antigen receptor on B cells. The aim of this review is to summarize all the available information about rituximab in LN. Eleven studies were found; three of them were observational studies (2 prospective and 1 retrospective) and eight were clinical trials (7 open-label studies and only 1 randomized controlled trial [RCT]). The evidence is insufficient to establish the role of rituximab in the treatment of LN. Results from the only RCT, which were negative, suggest a clinical benefit in black people. Further studies must confirm this hypothesis. Controlled clinical trials involving adaptive randomization are required to establish the real benefit of rituximab in LN.
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37
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Li M, Shi X, Qian T, Li J, Tian Z, Ni B, Hao F. A20 overexpression alleviates pristine-induced lupus nephritis by inhibiting the NF-κB and NLRP3 inflammasome activation in macrophages of mice. Int J Clin Exp Med 2015; 8:17430-17440. [PMID: 26770333 PMCID: PMC4694233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 10/13/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Lupus nephritis is an autoimmune inflammatory disease and urgently needs effective anti-inflammation therapies. A20, tumor necrosis factor alpha induced protein 3 (TNFAIP3), is a key negative regulator of inflammation, however whether A20 can regulate lupus nephritis has not been clarified. This study aimed at investigating the potential therapeutic effect of A20 on renal inflammation in mouse pristine model oflupus. METHODOLOGY/PRINCIPAL FINDINGS Female BALB/c mice were intraperitoneally injected with pristine to establish lupus renal injury. The levels of serum IL-1β, IL-6 and autoantibodies and the degrees of renal injury and CCL2 and F4/80 levels were measured. The levels of the NF-κB and NLRP3 inflammasome activation in peritoneal macrophages were determined. We found that injection with pristine increased the levels of serum IL-1β, IL-6, autoantibodies and CCL20 and F4/80 expression in the kidney and induced renal injury, accompanied by enhancing the NF-κB and NLRP3 inflammasome activation in macrophages of mice. In contrast, treatment with Ad-A20, but not with Ad-control, significantly mitigated pristine-induced inflammatory responses and renal injury,and reduced the NF-κB and NLRP3 inflammasome activation in macrophages in mice. CONCLUSION/SIGNIFICANCE Our data indicated that induction of A20 overexpression inhibited pristane induced lupus inflammation and renal injury in mice and may be a new therapeutic strategy for treatment of lupus nephritis.
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Affiliation(s)
- Min Li
- Department of Dermatology, Southwest Hospital, Third Military Medical UniversityChongqing, 400038, China
| | - Xiaowei Shi
- Department of Dermatology, Southwest Hospital, Third Military Medical UniversityChongqing, 400038, China
| | - Tian Qian
- Department of Dermatology, Southwest Hospital, Third Military Medical UniversityChongqing, 400038, China
| | - Jian Li
- Department of Dermatology, Southwest Hospital, Third Military Medical UniversityChongqing, 400038, China
| | - Zhiqiang Tian
- Institute of Immunology PLA, Third Military Medical UniversityChongqing 400038, China
| | - Bing Ni
- Institute of Immunology PLA, Third Military Medical UniversityChongqing 400038, China
| | - Fei Hao
- Department of Dermatology, Southwest Hospital, Third Military Medical UniversityChongqing, 400038, China
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Simeoni M, Nicotera R, Colao M, Citraro ML, Pelagi E, Cerantonio A, Comi N, Coppolino G, Fuiano G. Direct inhibition of plasmatic renin activity with aliskiren: a promising but under-investigated therapeutic option for non-diabetic glomerulonephritis. Int Urol Nephrol 2015; 48:229-37. [PMID: 26438325 DOI: 10.1007/s11255-015-1128-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 09/25/2015] [Indexed: 11/29/2022]
Abstract
Non-diabetic glomerulonephritis is a frequent cause of end-stage renal disease. The use of renin-angiotensin-aldosterone system blockers is a fundamental therapeutic approach. However, converting enzyme inhibitors (ACE-is) and angiotensin receptor blockers do not always achieve the desired target of proteinuria. The induction of the prorenin and renin up-regulation is a possible explanation. Aliskiren is the first drug acting as direct inhibitor of plasmatic renin activity, also able to interfere with the prorenin and renin profibrotic escape. We aimed at reviewing the literature for the assessment of potential efficacy and safety of aliskiren in the treatment of non-diabetic glomerulonephritis. The data on this topic are limited; however, we concluded for a possible usefulness of aliskiren. The renal safety profile appears potentially acceptable in non-diabetic patients although extreme carefulness, particularly with respect to long-term renal and cardiovascular tolerability, is recommended.
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Affiliation(s)
- Mariadelina Simeoni
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy.
| | - Ramona Nicotera
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Maria Colao
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Maria Lucia Citraro
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Elena Pelagi
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Annamaria Cerantonio
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Nicola Comi
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Giuseppe Coppolino
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Giorgio Fuiano
- Nephrology and Dialysis Unit, University-Hospital "Magna Graecia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
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Marković-Lipkovski J, Životić M, Müller CA, Tampe B, Ćirović S, Vještica J, Tomanović N, Zeisberg M, Müller GA. Variable Expression of Neural Cell Adhesion Molecule Isoforms in Renal Tissue: Possible Role in Incipient Renal Fibrosis. PLoS One 2015; 10:e0137028. [PMID: 26327314 PMCID: PMC4556687 DOI: 10.1371/journal.pone.0137028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/11/2015] [Indexed: 01/06/2023] Open
Abstract
Rare neural cell adhesion molecule (NCAM) positive cells have been previously described within the normal human adult kidney interstitium, speculating that they could increase in the interstitium with incipient interstitial renal fibrosis (IRF). In the present study, among 93 biopsy samples of various kidney diseases, NCAM+ interstitial cells were detected in 62.4% cases. An increased number of NCAM+ cells was significantly observed only in incipient IRF compared to normal renal tissues and advanced IRF stages (p<0.001), independently of underlying diseases (p = 0.657). All three major NCAM isoforms’ RT-PCR bands were visible either in normal or in kidneys with incipient IRF, albeit their mRNA expression levels measured by qRT-PCR were different. Applying qRT-PCR on pure NCAM+ cells population, obtained by laser capture microdissection, significant mRNA over-expression of NCAM140kD isoform was found in NCAM+ cells within incipient IRF (p = 0.004), while NCAM120kD and NCAM180kD isoforms were not changed significantly (p = 0.750; p = 0.704; respectively). Simultaneously, qRT-PCR also showed significant αSMA (p = 0.014) and SLUG (p = 0.004) mRNAs up-regulation within the NCAM+ cells of incipient IRF, as well as highly decreased matrix metalloproteinases (MMP) -2 and -9 mRNAs (p = 0.028; p = 0.036; respectively). However, using double immunofluorescence MMP-9 could still be detectable on the protein level in rare NCAM+ cells within the incipient IRF. Further characterization of NCAM+ cells by double immunofluorescent labeling revealed their association with molecules involved in fibrosis. Fibroblast growth factor receptor 1 (FGFR1) and α5β1 integrin were extensively expressed on NCAM+ cells within the incipient IRF areas, whereas human epididymis protein-4 (HE4) was found to be present in few NCAM+ cells of both normal and interstitium with incipient fibrosis. Heterogeneity of NCAM+ interstitial cells in normal and incipient IRF, concerning molecules related to fibrosis and variable expression of NCAM isoforms, could suggest diverse role of NCAM+ cells in homeostasis and in regulation of renal fibrosis in diseased kidneys.
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Affiliation(s)
| | - Maja Životić
- Institute of Pathology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Claudia A. Müller
- Section for Transplantation Immunology and Immunohematology, ZMF, University Medical Clinic, Eberhard Karls University, Tübingen, Germany
- Department of Nephrology and Rheumatology, Göttingen University Medical Center, Georg-August University, Göttingen, Germany
| | - Björn Tampe
- Department of Nephrology and Rheumatology, Göttingen University Medical Center, Georg-August University, Göttingen, Germany
| | - Sanja Ćirović
- Institute of Pathology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Jelena Vještica
- Institute of Pathology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Nada Tomanović
- Institute of Pathology, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Michael Zeisberg
- Department of Nephrology and Rheumatology, Göttingen University Medical Center, Georg-August University, Göttingen, Germany
| | - Gerhard A. Müller
- Department of Nephrology and Rheumatology, Göttingen University Medical Center, Georg-August University, Göttingen, Germany
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Zhang H, Zhao C, Wang S, Huang Y, Wang H, Zhao J, Yang N. Anti-dsDNA antibodies induce inflammation via endoplasmic reticulum stress in human mesangial cells. J Transl Med 2015; 13:178. [PMID: 26040555 PMCID: PMC4467615 DOI: 10.1186/s12967-015-0536-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 05/14/2015] [Indexed: 11/25/2022] Open
Abstract
Background Anti-dsDNA antibodies play an important role in the pathogenesis of lupus nephritis (LN). Endoplasmic reticulum (ER) stress is a physical reaction under stressful condition and can cause inflammation when stimulation is sustained. This study investigated the roles of ER stress in anti-dsDNA antibody-induced inflammation response in human mesangial cells (HMCs). Method Anti-dsDNA antibodies isolated from LN patients were used to stimulate HMCs. The expression of GRP78, PERK, p-PERK, p-eIF2α, ATF4, p-IRE1α, ATF6 and CHOP in HMCs was measured by western blot. NF-κB activation was detected by examining nuclear translocation of NF-κB p65. The expression and production of IL-1β, TNF-α and MCP-1 were examined by qPCR and ELISA. Results Flow cytometry and cellular ELISA showed that anti-dsDNA antibodies can bind to HMCs. The binding was not inhibited by blockage of Fc receptor. Anti-dsDNA antibody stimulation significantly enhanced the expression of GRP78, p-PERK, p-eIF2α and ATF4 in HMCs. However, no significant increase in the expression of p-IRE1α and ATF6 was found. In addition, anti-dsDNA antibodies also significantly increased the activation of NF-κB and upregulated the expression of IL-1β, TNF-α and MCP-1, which were suppressed by pretreatment of HMCs with chemical ER stress inhibitor 4-PBA. Transfection of specific ATF4 siRNA also significantly reduced the activation of NF-κB and expression of proinflammatory cytokines. Conclusion Anti-dsDNA antibodies induce NF-κB activation and inflammation in HMCs via PERK-eIF2α-ATF4 ER stress pathway.
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Affiliation(s)
- Hui Zhang
- Department of Rheumatology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
| | - Chunmei Zhao
- Department of Rheumatology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China. .,Department of Rheumatology, The First Affiliated Hospital of Xinjiang Medical University, 137 Liyushan South Road, Urumqi, 830054, China.
| | - Shuang Wang
- Department of Rheumatology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
| | - Yuefang Huang
- Department of Pediatrics, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
| | - Hongyue Wang
- Department of Rheumatology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
| | - Jijun Zhao
- Department of Rheumatology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
| | - Niansheng Yang
- Department of Rheumatology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
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Zheng N, Wang D, Ming H, Zhang H, Yu X. BAFF promotes proliferation of human mesangial cells through interaction with BAFF-R. BMC Nephrol 2015; 16:72. [PMID: 25975951 PMCID: PMC4432501 DOI: 10.1186/s12882-015-0064-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 05/06/2015] [Indexed: 11/10/2022] Open
Abstract
Background B cell activating factor belonging to the TNF family (BAFF) is vital for B cell survival, proliferation and activation. Evidence indicates that BAFF is systemically or locally increased in glomerulonephritis (e.g. lupus nephritis, IgA nephropathy). However, the effect of BAFF on human mesangial cells is not known. Methods The impact of BAFF on the proliferation of a human mesangial cell line in vitro was investigated. The expression of BAFF receptor (BAFF-R) and downstream signal transduction were explored. The influence of BAFF on the expression of related genes was also studied. Results Our data indicated that BAFF had a proliferative effect on human mesangial cells, as supported by the results of cell proliferation assays and the inhibited expression of the pro-apoptotic gene Bim. BAFF-R was expressed on the cell membrane of human mesangial cells and blockade of BAFF/BAFF-R binding abrogated the proliferative effect of BAFF on human mesangial cells. BAFF stimulation led to rapid phosphorylation of NF-κBp65, Akt and MAPK p38 kinase in human mesangial cells, whereas it had no effect on the expression of NF-κB p100 and phosphorylation of Erk. The phosphorylation of Akt was very sensitive to blockade of BAFF/BAFF-R ligation, although activation of MAPK p38 and NF-κBp65 was not. BAFF treatment resulted in decreased expression of BAFF-R, which implied negative feedback regulation after its binding. Conclusions BAFF promoted proliferation of human mesangial cells, which was mediated via BAFF-R. The BAFF/BAFF-R interaction triggered Akt, p65 and p38 activation, with Akt phosphorylation being tightly dependent on BAFF/BAFF-R interaction.
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Affiliation(s)
- Nuoyan Zheng
- Department of Nephrology, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China. .,Translational Medical Center, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China.
| | - Donxian Wang
- Department of Nephrology, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China. .,Translational Medical Center, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China.
| | - Hongyan Ming
- International Travel Health Care Center, Entry & Exit Inspection and Quarantine Bureau of Guangdong Province, Guangdong, China.
| | - Haiqing Zhang
- Department of Nephrology, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China. .,Translational Medical Center, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China.
| | - Xueqing Yu
- Department of Nephrology, The First Affiliated Hospital of Sun Sat-yet University, Guangzhou, China.
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Fenton K. The effect of cell death in the initiation of lupus nephritis. Clin Exp Immunol 2015; 179:11-6. [PMID: 25041590 DOI: 10.1111/cei.12417] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2014] [Indexed: 12/27/2022] Open
Abstract
Cell death and the release of chromatin have been demonstrated to activate the immune system producing autoantibodies against nuclear antigens in patients with systemic lupus erythematosus (SLE). Apoptosis, necrosis, necroptosis, secondary necrosis, autophagy and the clearance of dying cells by phagocytosis are processes believed to have a role in tolerance avoidance, activation of autoimmune lymphocytes and tissue damage by effector cells. The released chromatin not only activates the immune system; it also acts as antigen for the autoantibodies produced, including anti-dsDNA antibodies. The subsequent immune complex formed is deposited within the basement membranes and the mesangial matrix of glomeruli. This may be considered as an initiating event in lupus nephritis. The origin of the released chromatin is still debated, and the possible mechanisms and cell sources are discussed in this study.
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Affiliation(s)
- K Fenton
- RNA and Molecular Pathology Research Group, Institute of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
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Sato S, Zhang XK. The Friend leukaemia virus integration 1 (Fli-1) transcription factor affects lupus nephritis development by regulating inflammatory cell infiltration into the kidney. Clin Exp Immunol 2014; 177:102-9. [PMID: 24580413 DOI: 10.1111/cei.12310] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2014] [Indexed: 11/28/2022] Open
Abstract
The transcription factor Friend leukaemia virus integration 1 (Fli-1) is implicated in the pathogenesis of systemic lupus erythematosus in both human patients and murine models of lupus. Murphy Roths large (MRL)/lpr mice and New Zealand mixed (NZM)2410 mice, murine models of lupus, with decreased expression of Fli-1 had significantly prolonged survival and reduced nephritis. Lupus nephritis is a major cause of mortality and morbidity in patients, and inflammatory cell infiltration plays a key role in the development of the disease. To study how the expression of Fli-1 affects the infiltration of inflammatory cells into the kidneys, we generated congenic enhanced green fluorescent protein (GFP) transgenic MRL/lpr mice. A significantly increased number of GFP-expressing inflammatory cells infiltrated the kidneys of wild-type MRL/lpr mice compared to Fli-1 heterozygous (Fli-1(+/-)) MRL/lpr mice after injection of GFP(+) cells. Expression of inflammatory chemokine mRNA, including chemokine (C-C motif) ligand (CCL)2, CCL3, CCL4 and CCL5, was significantly lower in the kidneys from Fli-1(+/-) MRL/lpr mice compared to wild-type littermates. Numbers of infiltrated cells into the kidneys correlate with expression levels of CCL2, CCL4 and CCL5, but not the titres of anti-dsDNA autoantibodies in these mice. Significantly increased inflammatory cells from wild-type MRL/lpr mice infiltrated into kidneys compared to the cells from Fli-1(+/-) MRL/lpr mice. The chemotaxis of inflammatory cells from Fli-1(+/-) MRL/lpr mice towards each chemokine was decreased significantly compared to inflammatory cells from wild-type MRL/lpr mice in the transwell migration assay in vitro. Our results indicate that Fli-1 affects lupus nephritis development by regulating the expression of chemokines in the kidney and the migration of inflammatory cells.
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Affiliation(s)
- S Sato
- Department of Medicine, Division of Rheumatology and Immunology, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC, USA
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Yazici MU, Orhan D, Kale G, Besbas N, Ozen S. Studying IFN-gamma, IL-17 and FOXP3 in pediatric lupus nephritis. Pediatr Nephrol 2014; 29:853-62. [PMID: 24482023 DOI: 10.1007/s00467-013-2695-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 10/24/2013] [Accepted: 11/06/2013] [Indexed: 01/26/2023]
Abstract
BACKGROUND We studied the cytokines secreted by the inflammatory T cell subgroups (IFN-γ and IL-17) and FOXP3 expression in lupus nephritis (LN) and analyzed associations with clinical and histopathological parameters. METHODS Renal tissue samples of 39 LN patients were studied. Immunohistochemical staining was carried out with antibodies against IFN-γ, IL-17, and FOXP3. RESULTS Both IFN-γ (+) and IL-17+ cells were statistically higher in LN tissues when compared with controls (p < 0.01). The cells in the tubulointerstitium were CD3 + CD4+ displaying a Th1 and Th17 phenotype, whereas the less intense population in the glomeruli was CD3-CD4-. Interstitial CD3 + CD4+ FOXP3+ cells were also significantly higher in LN biopsies than in control tissues (p < 0.01). IFN-γ (+) and IL-17+ cells were more intense among class IV LN as compared to class II, III LN (p < 0.01 and p = 0.001, respectively). Subsequently, when IL-17 and IFN-γ staining was compared between the proliferative LN classes, class III and IV patients had more intense staining compared to class II (all p < 0.05). IFN-γ immunostaining correlated positively with serum creatinine and negatively with albumin levels and glomerular filtration rate (GFR). IL-17 immunostaining correlated with proteinuria, requirement for pulse steroids, and SLEDAI renal score, and negatively with GFR. Furthermore, glomerular and interstitial IL-17 and IFN-γ stainings were significantly associated with various parameters of histological activity (p < 0.05). CONCLUSION We suggest that IFN-gamma and IL-17 could have a role in the pathogenesis and progression of LN. The Th1 and Th17 cells may be imperative in the severity of LN. Recognizing the complexity of the immune pathways involved in lupus reminds us that targeting B cells only may not suffice to control the progression of the inflammation.
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Affiliation(s)
- Mutlu Uysal Yazici
- Department of Pediatrics, Hacettepe University Children's Hospital, Ankara, Turkey
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Abstract
Physicians in practice should be knowledgeable regarding several aspects of autoimmune disorders, especially systemic lupus erythematosus (SLE) and lupus nephritis. These disorders can present to the clinician's clinic and private office regardless of their specialty. This review will discuss various aspects of SLE, its mechanisms of disease, role of accelerated atherosclerosis, proinflammatory cytokines, and therapeutic approaches. The role of vascular endothelial growth factor in which and plasma levels have been associated with disease activity, classification of severity, and diagnosis of lupus nephritis is addressed. Current treatment options, prognosis, and future therapeutic approaches and common side effects are also discussed.
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Li Y, Yan M, Yang J, Raman I, Du Y, Min S, Fang X, Mohan C, Li QZ. Glutathione S-transferase Mu 2-transduced mesenchymal stem cells ameliorated anti-glomerular basement membrane antibody-induced glomerulonephritis by inhibiting oxidation and inflammation. Stem Cell Res Ther 2014; 5:19. [PMID: 24480247 PMCID: PMC4055015 DOI: 10.1186/scrt408] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 01/15/2014] [Indexed: 01/30/2023] Open
Abstract
INTRODUCTION Oxidative stress is implicated in tissue inflammation, and plays an important role in the pathogenesis of immune-mediated nephritis. Using the anti-glomerular basement membrane antibody-induced glomerulonephritis (anti-GBM-GN) mouse model, we found that increased expression of glutathione S-transferase Mu 2 (GSTM2) was related to reduced renal damage caused by anti-GBM antibodies. Furthermore, mesenchymal stem cell (MSC)-based therapy has shed light on the treatment of immune-mediated kidney diseases. The aim of this study was to investigate if MSCs could be utilized as vehicles to deliver the GSTM2 gene product into the kidney and to evaluate its potential therapeutic effect on anti-GBM-GN. METHODS The human GSTM2 gene (hGSTM2) was transduced into mouse bone marrow-derived MSCs via a lentivirus vector to create a stable cell line (hGSTM2-MSC). The cultured hGSTM2-MSCs were treated with 0.5 mM H2O2, and apoptotic cells were measured by terminal dUTP nick-end labeling (TUNEL) assay. The 129/svj mice, which were challenged with anti-GBM antibodies, were injected with 10⁶ hGSTM2-MSCs via the tail vein. Expression of hGSTM2 and inflammatory cytokines in the kidney was assayed by quantitative PCR and western blotting. Renal function of mice was evaluated by monitoring proteinuria and levels of blood urea nitrogen (BUN), and renal pathological changes were analyzed by histochemistry. Immunohistochemical analysis was performed to measure inflammatory cell infiltration and renal cell apoptosis. RESULTS MSCs transduced with hGSTM2 exhibited similar growth and differentiation properties to MSCs. hGSTM2-MSCs persistently expressed hGSTM2 and resisted H2O2-induced apoptosis. Upon injection into 129/svj mice, hGSTM2-MSCs migrated to the kidney and expressed hGSTM2. The anti-GBM-GN mice treated with hGSTM2-MSCs exhibited reduced proteinuria and BUN (58% and 59% reduction, respectively) and ameliorated renal pathological damage, compared with control mice. Mice injected with hGSTM2-MSCs showed alleviated renal inflammatory cell infiltration and reduced expression of chemokine (C-C motif) ligand 2 (CCL2), interleukin (IL)-1β and IL-6 (53%, 46% and 52% reduction, respectively), compared with controls. Moreover, hGSTM2-MSCs increased expression of renal superoxide dismutase and catalase, which may associate with detoxifying reactive oxygen species to prevent oxidative renal damage. CONCLUSIONS Our data suggest that the enhanced protective effect of GSTM2-transduced MSCs against anti-GBM-GN might be associated with inhibition of oxidative stress-induced renal cell apoptosis and inflammation, through over-expression of hGSTM2 in mouse kidneys.
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MicroRNA-let-7a promotes E2F-mediated cell proliferation and NFκB activation in vitro. Cell Mol Immunol 2013; 11:79-83. [PMID: 24240124 DOI: 10.1038/cmi.2013.51] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 09/03/2013] [Accepted: 09/04/2013] [Indexed: 02/06/2023] Open
Abstract
Epigenetic factors, including altered microRNA (miRNA) expression, may contribute to aberrant immune cell function in systemic lupus erythematosus (SLE). MiRNA-let-7a (let-7a) has been shown to directly alter cell cycle progression and proinflammatory cytokine production. Due to the crucial role of let-7a in cell division and inflammation, we investigated let-7a-mediated proliferation and NFκB translocation in J774A.1 macrophages and MES 13 mesangial cells in vitro. In immune-stimulated cells transfected with let-7a, cell proliferation was significantly increased over time. There was a significant increase in the number of immune-stimulated cells in S and G2 phases. Immune-stimulated cells overexpressing let-7a had increased nuclear translocation of NFκB. Bioinformatical analysis revealed that the E2F family, critical regulators of the G1-S transition, has potential binding sites for let-7a in their mRNA transcripts. Let-7a overexpression significantly increased the expression of the cell cycle activator E2F2 and increased retinoblastoma protein (Rb) phosphorylation in immune-stimulated cells. The cell cycle inhibitor E2F5 was significantly decreased in let-7a-transfected cells that were immune-stimulated. Bioinformatical analysis revealed E2F2 and NFκB are transcription factors predicted to regulate the let-7a promoter. We analyzed transcriptional regulation of let-7a by real-time RT-PCR using chromatin immunoprecipitation with E2F2 and NFκB antibodies. There was an increase in E2F2 and NFκB binding in DNA enriched for the let-7a promoter in immune-stimulated cells. Silencing E2F2 or NFκB significantly decreased let-7a expression and IL-6 production in immune-stimulated cells. Taken together, our results suggest that overexpression of let-7a may contribute to hyperplasia and the proinflammatory response in SLE.
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Chafin CB, Regna NL, Hammond SE, Reilly CM. Cellular and urinary microRNA alterations in NZB/W mice with hydroxychloroquine or prednisone treatment. Int Immunopharmacol 2013; 17:894-906. [PMID: 24121037 DOI: 10.1016/j.intimp.2013.09.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/06/2013] [Accepted: 09/18/2013] [Indexed: 10/26/2022]
Abstract
Determining alterations to disease-associated miRNAs induced by specific therapeutics may allow the use of tailored therapy in lupus. We determined miRNA alterations in female NZB/W lupus mice treated with hydroxychloroquine (HCQ) or prednisone (PRED) for 12 weeks beginning at 24 weeks-of-age. B cell, PBMC, and urinary miR-let-7a expression were decreased with HCQ or PRED treatment. HCQ or PRED treatment reduced miR-21 expression in mesangial cells, T cells, pDCs, PBMCs, and the urine. MiR-146a expression was reduced in mesangial cells with HCQ treatment and in pDCs with HCQ or PRED treatment. PRED treatment increased miR-155 expression in mesangial, B, and T cells and PBMCs yet decreased miR-155 expression in pDCs and the urine. In vitro studies confirmed that HCQ or PRED's anti-inflammatory actions are dependent on their ability to inhibit miRNA expression. Our studies indicate that lupus therapeutics may work, in part, by altering the expression of disease-associated miRNAs.
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Affiliation(s)
- Cristen B Chafin
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States.
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