1
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Wu Z, Zhang Z, Zhou S, Xie M, Liu L, Luo C, Zheng F, Qiu W, Wang Y, Zhang J. ERK1/2-dependent activity of SOX9 is required for sublytic C5b-9-induced expression of FGF1, PDGFα, and TGF-β1 in rat Thy-1 nephritis. Int Immunopharmacol 2024; 127:111372. [PMID: 38118314 DOI: 10.1016/j.intimp.2023.111372] [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: 10/19/2023] [Revised: 12/04/2023] [Accepted: 12/11/2023] [Indexed: 12/22/2023]
Abstract
Mesangial proliferative glomerulonephritis (MsPGN) and its related rat model Thy-1 nephritis (Thy-1N) are associated with C5b-9 deposition and are characterized by proliferation of glomerular mesangial cell (GMC) and expansion of extracellular matrix (ECM) expansion, alongside overexpression of multiple growth factors. Although fibroblast growth factor 1 (FGF1), platelet-derived growth factor alpha (PDGFα), and transforming growth factor beta 1 (TGF-β1) are well known for their proproliferative and profibrotic roles, the molecular mechanisms responsible for regulating the expression of these growth factors have not been thoroughly elucidated. In this study, we found that sublytic C5b-9 induction of sex-determining region Y-box 9 (SOX9) transactivated FGF1, PDGFα, and TGF-β1 genes in GMCs, resulting in a significant increase in their mRNA and protein levels. Besides, sublytic C5b-9 induction of activation of extracellular signal-regulated kinases 1 and 2 (ERK1/2) phosphorylated SOX9 at serine 181 and serine 64, which enhanced SOX9's ability to transactivate FGF1, PDGFα, and TGF-β1 genes in GMCs. Furthermore, we demonstrated that inhibiting ERK1/2 activation or silencing either ERK1/2 or SOX9 gene led to reduced SOX9 phosphorylation, decreased generation of FGF1, PDGFα, and TGF-β1, and ameliorated glomerular injury in rat Thy-1N. Overall, these findings suggest that expression of FGF1, PDGFα, and TGF-β1 is promoted by ERK1/2-mediated phosphorylation of SOX9, which may provide a valuable insight into the pathogenesis of MsPGN and offer a potential target for the development of novel treatment strategies for MsPGN.
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Affiliation(s)
- Zhijiao Wu
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Zhiwei Zhang
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Sicheng Zhou
- School of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Mengxiao Xie
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Longfei Liu
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Can Luo
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Feixiang Zheng
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Wen Qiu
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China; Key Laboratory of Immune Microenvironment and Disease, Nanjing Medical University, Nanjing, China; National Health Commission Key Laboratory of Antibody Techniques, Nanjing Medical University, Nanjing, China
| | - Yingwei Wang
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China; Key Laboratory of Immune Microenvironment and Disease, Nanjing Medical University, Nanjing, China; National Health Commission Key Laboratory of Antibody Techniques, Nanjing Medical University, Nanjing, China
| | - Jing Zhang
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China; Key Laboratory of Immune Microenvironment and Disease, Nanjing Medical University, Nanjing, China; National Health Commission Key Laboratory of Antibody Techniques, Nanjing Medical University, Nanjing, China.
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2
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Ying S, Liu L, Luo C, Liu Y, Zhao C, Ge W, Wu N, Ruan Y, Wang W, Zhang J, Qiu W, Wang Y. Sublytic C5b-9 induces TIMP3 expression by glomerular mesangial cells via TRAF6-dependent KLF5 K63-linked ubiquitination in rat Thy-1 nephritis. Int Immunopharmacol 2023; 124:110970. [PMID: 37748221 DOI: 10.1016/j.intimp.2023.110970] [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: 07/27/2023] [Revised: 09/07/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
Rat Thy-1 nephritis (Thy-1N) is an experimental model for studying human mesangioproliferative glomerulonephritis (MsPGN), and its pathological features are glomerular mesangial cell (GMC) proliferation and extracellular matrix (ECM) accumulation. Although we have confirmed that renal lesions of Thy-1N rats are sublytic C5b-9-dependent, and ECM accumulation is related to tissue inhibitor of matrix metalloproteinase (TIMP) inhibiting matrix metalloproteinase (MMP) activity, whether sublytic C5b-9 can induce TIMP production by GMC in Thy-1N rat and the underlying mechanism remains unclear. In the study, we proved that the expressions of TIMP3, krϋppel-like transcription factor 5 (KLF5) and tumor necrosis factor receptor-associated factor 6 (TRAF6) were simultaneously up-regulated both in the renal tissues of Thy-1N rats (in vivo) and in the GMC exposed to sublytic C5b-9 (in vitro). Further mechanism exploration discovered that KLF5 and TRAF6 as two upstream molecules could induce TIMP3 gene transcription through binding to the same region i.e., -1801nt to -1554nt (GGGGAGGGGC) and -228nt to -46nt (GCCCCGCCCC) of TIMP3 promoter. In the process, TRAF6 mediated KLF5 K63-linked ubiquitination at K99 and K100 enhancing KLF5 nuclear localization and binding to TIMP3 promoter, augmenting its gene activation. Furthermore, the experiments in vivo exhibited that silencing KLF5, TRAF6 or TIMP3 gene could markedly lessen renal KLF5 K63-linked ubiquitination or TIMP3 induction, ECM accumulation and other pathological changes of Thy-1N rats. Besides, the positive expressions of above-mentioned these proteins and ECM accumulation and their correlation in the renal tissues of MsPGN patients were also demonstrated. Overall, our findings implicate that KLF5 and TRAF6 play a promoting role in sublytic C5b-9-triggered TIMP3 gene transcription and expression, which might provide a novel mechanistic insight into rat Thy-1N and human MsPGN.
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Affiliation(s)
- Shuai Ying
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Longfei Liu
- Department of Central Laboratory, The Affiliated Huaian No. 1 People's Hospital, Nanjing Medical University, Huai'an, China
| | - Can Luo
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Yu Liu
- Department of Microbiology and Immunology, Jiangsu Health Vocational College, Nanjing, China
| | - Chenhui Zhao
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wen Ge
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Ningxia Wu
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Yuting Ruan
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Weiming Wang
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Jing Zhang
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China; Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, China
| | - Wen Qiu
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China; Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, China.
| | - Yingwei Wang
- Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China; Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, China.
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3
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Li J, Ye F, Xu X, Xu P, Wang P, Zheng G, Ye G, Yu W, Su Z, Lin J, Che Y, Liu Z, Feng P, Cao Q, Li D, Xie Z, Wu Y, Shen H. Targeting macrophage M1 polarization suppression through PCAF inhibition alleviates autoimmune arthritis via synergistic NF-κB and H3K9Ac blockade. J Nanobiotechnology 2023; 21:280. [PMID: 37598147 PMCID: PMC10439630 DOI: 10.1186/s12951-023-02012-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 07/17/2023] [Indexed: 08/21/2023] Open
Abstract
Sustained inflammatory invasion leads to joint damage and progressive disability in several autoimmune rheumatic diseases. In recent decades, targeting M1 macrophage polarization has been suggested as a promising therapeutic strategy for autoimmune arthritis. P300/CBP-associated factor (PCAF) is a histone acetyltransferase (HAT) that exhibits a strong positive relationship with the proinflammatory microenvironment. However, whether PCAF mediates M1 macrophage polarization remains poorly studied, and whether targeting PCAF can protect against autoimmune arthritis in vivo remains unclear. Commonly used drugs can cause serious side effects in patients because of their extensive and nonspecific distribution in the human body. One strategy for overcoming this challenge is to develop drug nanocarriers that target the drug to desirable regions and reduce the fraction of drug that reaches undesirable targets. In this study, we demonstrated that PCAF inhibition could effectively inhibit M1 polarization and alleviate arthritis in mice with collagen-induced arthritis (CIA) via synergistic NF-κB and H3K9Ac blockade. We further designed dextran sulfate (DS)-based nanoparticles (DSNPs) carrying garcinol (a PCAF inhibitor) to specifically target M1 macrophages in inflamed joints of the CIA mouse model via SR-A-SR-A ligand interactions. Compared to free garcinol, garcinol-loaded DSNPs selectively targeted M1 macrophages in inflamed joints and significantly improved therapeutic efficacy in vivo. In summary, our study indicates that targeted PCAF inhibition with nanoparticles might be a promising strategy for treating autoimmune arthritis via M1 macrophage polarization inhibition.
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Affiliation(s)
- Jinteng Li
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
| | - Feng Ye
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Xiaojun Xu
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Peitao Xu
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Peng Wang
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
| | - Guan Zheng
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
| | - Guiwen Ye
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
| | - Wenhui Yu
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Zepeng Su
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Jiajie Lin
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Yunshu Che
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Zhidong Liu
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Pei Feng
- Center for Biotherapy, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Qian Cao
- Center for Biotherapy, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
| | - Dateng Li
- 121 Westmoreland Ave, 10606 White Plains, NY USA
| | - Zhongyu Xie
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
| | - Yanfeng Wu
- Center for Biotherapy, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
| | - Huiyong Shen
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, 518003 Shenzhen, PR China
- Shenzhen Key Laboratory of Ankylosing Spondylitis, 518003 Shenzhen, PR China
- Guangdong Orthopedic Clinical Research Center, 518003 Shenzhen, PR China
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4
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Wang K, Xiong J, Lu Y, Wang L, Tian T. SENP1-KLF4 signalling regulates LPS-induced macrophage M1 polarization. FEBS J 2023; 290:209-224. [PMID: 35942612 DOI: 10.1111/febs.16589] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 03/19/2022] [Accepted: 08/08/2022] [Indexed: 01/14/2023]
Abstract
Macrophages are very important immune cells and play critical roles in tumour immunity. Macrophage subtypes can be divided into classical polarization (M1 macrophages) and alternative polarization (M2 macrophages) under different microenvironments. Krüppel-like factor 4 (KLF4) is an essential transcription factor for macrophage polarization. Our previous study has shown that KLF4 SUMOylation plays an important role in macrophage M2 polarization. In the present study, small ubiquitin-like modifier (SUMO) specific peptidase (SENP)1 was identified as a specific protease for KLF4 de-SUMOylation, with the SENP1-KLF4 axis playing a vital role in M1 macrophage polarization by affecting the nuclear factor kappa B signalling pathway. Additionally, the activity of tumour cells was weakened by KLF4 SUMOylation deficient macrophages. Hence, the SENP1-KLF4 axis is considered to play a crucial role in regulating lipopolysaccharide-induced macrophage M1 polarization, thereby affecting the activity of tumour cells. Therefore, the SENP1-KLF4 axis has therapeutic potential as a target in cancer therapy.
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Affiliation(s)
- Kezhou Wang
- Department of Pathology, Xinhua Hospital, Affiliated to Medicine School of Shanghai Jiaotong University, Shanghai, China
| | - Jie Xiong
- Department of Gastroenterology and Hepatology, Tongji Hospital, Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Yiwen Lu
- Department of Laboratory Medicine, Xinhua Hospital, Affiliated to Medicine School of Shanghai Jiaotong University, Shanghai, China
| | - Lifeng Wang
- Department of Pathology, Xinhua Hospital, Affiliated to Medicine School of Shanghai Jiaotong University, Shanghai, China
| | - Tian Tian
- Department of Ophthalmology, Xinhua Hospital, Affiliated to Medicine School of Shanghai Jiaotong University, Shanghai, China
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5
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Xia L, Liu Y, Zhang Z, Gong Y, Yu T, Zhao D, Qiu W, Wang Y, Zhang J. Modulation of IL-6 Expression by KLF4-Mediated Transactivation and PCAF-Mediated Acetylation in Sublytic C5b-9-Induced Rat Glomerular Mesangial Cells. Front Immunol 2022; 12:779667. [PMID: 35046941 PMCID: PMC8761757 DOI: 10.3389/fimmu.2021.779667] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/06/2021] [Indexed: 12/17/2022] Open
Abstract
Interleukin-6 (IL-6) overproduction has been considered to contribute to inflammatory damage of glomerular mesangial cells (GMCs) in human mesangial proliferative glomerulonephritis (MsPGN) and its rat model called Thy-1 nephritis (Thy-1N). However, the regulatory mechanisms of IL-6 expression in GMCs upon sublytic C5b-9 timulation remain poorly understood. We found that Krüppel-like factor 4 (KLF4) bound to the IL-6 promoter (−618 to −126 nt) and activated IL-6 gene transcription. Furthermore, lysine residue 224 of KLF4 was acetylated by p300/CBP-associated factor (PCAF), which was important for KLF4-mediated transactivation. Moreover, lysine residue 5 on histone H2B and lysine residue 9 on histone H3 at the IL-6 promoter were also acetylated by PCAF, which resulted in an increase in IL-6 transcription. Besides, NF-κB activation promoted IL-6 expression by elevating the expression of PCAF. Overall, these findings suggest that sublytic C5b-9-induced the expression of IL-6 involves KLF4-mediated transactivation, PCAF-mediated acetylation of KLF4 and histones, and NF-κB activation in GMCs.
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Affiliation(s)
- Lu Xia
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Yu Liu
- Department of Microbiology and Immunology, Jiangsu Health Vocational College, Nanjing, China
| | - Zhiwei Zhang
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Yajuan Gong
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Tianyi Yu
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Dan Zhao
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Wen Qiu
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Yingwei Wang
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Jing Zhang
- Department of Immunology, Nanjing Medical University, Nanjing, China.,Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China.,Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, China
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6
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Liu L, Ge W, Zhang Z, Li Y, Xie M, Zhao C, Yao C, Luo C, Wu Z, Wang W, Zhao D, Zhang J, Qiu W, Wang Y. Sublytic C5b-9 triggers glomerular mesangial cell proliferation via enhancing FGF1 and PDGFα gene transcription mediated by GCN5-dependent SOX9 acetylation in rat Thy-1 nephritis. FASEB J 2021; 35:e21751. [PMID: 34156114 DOI: 10.1096/fj.202002814rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 05/28/2021] [Accepted: 06/08/2021] [Indexed: 12/14/2022]
Abstract
Rat Thy-1 nephritis (Thy-1N) is an animal model of human mesangioproliferative glomerulonephritis (MsPGN), accompanied by glomerular mesangial cell (GMC) proliferation and extracellular matrix (ECM) deposition. Although sublytic C5b-9 formed on GMC membrane could induce cell proliferation, the mechanism is still unclear. In this study, we first demonstrated that the level of SRY related HMG-BOX gene 9 (SOX9), general control nonderepressible 5 (GCN5), fibroblast growth factor 1 (FGF1) and platelet-derived growth factor α (PDGFα) was all elevated both in the renal tissues of Thy-1N rats (in vivo) and in the GMCs (in vitro) with sublytic C5b-9 stimulation. Then, we not only discovered that sublytic C5b-9 caused GMC proliferation through increasing SOX9, GCN5, FGF1 and PDGFα expression, but also proved that SOX9 and GCN5 formed a complex and combined with FGF1 and PDGFα promoters, leading to FGF1 and PDGFα gene transcription. More importantly, GCN5 could mediate SOX9 acetylation at lysine 62 (K62) to enhance SOX9 binding to FGF1 or PDGFα promoter and promote FGF1 or PDGFα synthesis and GMC proliferation. Besides, the experiments in vivo also showed that FGF1 and PDGFα expression, GMC proliferation and urinary protein secretion in Thy-1N rats were greatly reduced by silencing renal SOX9, GCN5, FGF1 or PDGFα gene. Furthermore, the renal tissues of MsPGN patients also exhibited positive expression of these genes mentioned above. Collectively, our findings indicate that GCN5, SOX9 and FGF1/PDGFα can form an axis and play an essential role in sublytic C5b-9-triggered GMC proliferation, which might provide a novel insight into the pathogenesis of Thy-1N and MsPGN.
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Affiliation(s)
- Longfei Liu
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China.,Department of Central Laboratory, The Affiliated Huaian No. 1 People's Hospital, Nanjing Medical University, Huai'an, China
| | - Wen Ge
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Zhiwei Zhang
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Ya Li
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Mengxiao Xie
- Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chenhui Zhao
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chunlei Yao
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Can Luo
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Zhijiao Wu
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Wenbo Wang
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Dan Zhao
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Jing Zhang
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Wen Qiu
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China.,Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, China
| | - Yingwei Wang
- Key Laboratory of Immunological Environment and Disease, Department of Immunology, Nanjing Medical University, Nanjing, China.,Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, China
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7
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Xie M, Wu Z, Ying S, Liu L, Zhao C, Yao C, Zhang Z, Luo C, Wang W, Zhao D, Zhang J, Qiu W, Wang Y. Sublytic C5b-9 induces glomerular mesangial cell proliferation via ERK1/2-dependent SOX9 phosphorylation and acetylation by enhancing Cyclin D1 in rat Thy-1 nephritis. Exp Mol Med 2021; 53:572-590. [PMID: 33811247 PMCID: PMC8102557 DOI: 10.1038/s12276-021-00589-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 02/01/2023] Open
Abstract
Glomerular mesangial cell (GMC) proliferation is a histopathological alteration in human mesangioproliferative glomerulonephritis (MsPGN) or in animal models of MsPGN, e.g., the rat Thy-1 nephritis (Thy-1N) model. Although sublytic C5b-9 assembly on the GMC membrane can trigger cell proliferation, the mechanisms are still undefined. We found that sublytic C5b-9-induced rat GMC proliferation was driven by extracellular signal-regulated kinase 1/2 (ERK1/2), sry-related HMG-box 9 (SOX9), and Cyclin D1. Here, ERK1/2 phosphorylation was a result of the calcium influx-PKC-α-Raf-MEK1/2 axis activated by sublytic C5b-9, and Cyclin D1 gene transcription was enhanced by ERK1/2-dependent SOX9 binding to the Cyclin D1 promoter (-582 to -238 nt). In addition, ERK1/2 not only interacted with SOX9 in the cell nucleus to mediate its phosphorylation at serine residues 64 (a new site identified by mass spectrometry) and 181 (a known site), but also indirectly induced SOX9 acetylation by elevating the expression of general control non-repressed protein 5 (GCN5), which together resulted in Cyclin D1 synthesis and GMC proliferation. Moreover, our in vivo experiments confirmed that silencing these genes ameliorated the lesions of Thy-1N rats and reduced SOX9 phosphorylation, acetylation and Cyclin D1 expression. Furthermore, the renal tissue sections of MsPGN patients also showed higher phosphorylation or expression of ERK1/2, SOX9, and Cyclin D1. In summary, these findings suggest that sublytic C5b-9-induced GMC proliferation in rat Thy-1N requires SOX9 phosphorylation and acetylation via enhanced Cyclin D1 gene transcription, which may provide a new insight into human MsPGN pathogenesis.
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Affiliation(s)
- Mengxiao Xie
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China ,grid.412676.00000 0004 1799 0784Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu 210029 China
| | - Zhijiao Wu
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Shuai Ying
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Longfei Liu
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China ,grid.89957.3a0000 0000 9255 8984Department of Central Laboratory, The Affiliated Huaian No. 1 People’s Hospital, Nanjing Medical University, One West Huanghe Road, Huai’an, Jiangsu 223300 China
| | - Chenhui Zhao
- grid.412676.00000 0004 1799 0784Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu 210029 China
| | - Chunlei Yao
- grid.412676.00000 0004 1799 0784Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu 210029 China
| | - Zhiwei Zhang
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Can Luo
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Wenbo Wang
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Dan Zhao
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Jing Zhang
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China
| | - Wen Qiu
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China ,grid.89957.3a0000 0000 9255 8984Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, Jiangsu 211166 China
| | - Yingwei Wang
- grid.89957.3a0000 0000 9255 8984Department of Immunology, and Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, 101 Longmian Road, Nanjing, Jiangsu 211166 China ,grid.89957.3a0000 0000 9255 8984Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, Jiangsu 211166 China
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Activation of the Complement System on Human Endothelial Cells by Urban Particulate Matter Triggers Inflammation-Related Protein Production. Int J Mol Sci 2021; 22:ijms22073336. [PMID: 33805189 PMCID: PMC8038114 DOI: 10.3390/ijms22073336] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 02/02/2023] Open
Abstract
Exposure to particulate matter (PM) is becoming a major global health issue. The amount and time of exposure to PM are known to be closely associated with cardiovascular diseases. However, the mechanism through which PM affects the vascular system is still not clear. Endothelial cells line the interior surface of blood vessels and actively interact with plasma proteins, including the complement system. Unregulated complement activation caused by invaders, such as pollutants, may promote endothelial inflammation. In the present study, we sought to investigate whether urban PM (UPM) acts on the endothelial environment via the complement system. UPM-treated human endothelial cells with normal human serum showed the deposition of membrane attack complexes (MACs) on the cell surface via the alternative pathway of the complement system. Despite the formation of MACs, cell death was not observed, and cell proliferation was increased in UPM-mediated complement activation. Furthermore, complement activation on endothelial cells stimulated the production of inflammation-related proteins. Our results revealed that UPM could activate the complement system in human endothelial cells and that complement activation regulated inflammatory reaction in microenvironment. These findings provide clues with regard to the role of the complement system in pathophysiologic events of vascular disease elicited by air pollution.
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Yu T, Gong Y, Liu Y, Xia L, Zhao C, Liu L, Xie M, Wu Z, Zhao D, Qiu W, Wang Y, Zhang J, Ji M. KLF6 Acetylation Promotes Sublytic C5b-9-Induced Production of MCP-1 and RANTES in Experimental Mesangial Proliferative Glomerulonephritis. Int J Biol Sci 2020; 16:2340-2356. [PMID: 32760202 PMCID: PMC7378648 DOI: 10.7150/ijbs.46573] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/08/2020] [Indexed: 12/13/2022] Open
Abstract
Rat Thy-1 nephritis (Thy-1N) is an experimental mesangial proliferative glomerulonephritis (MsPGN) for studying human MsPGN. Although sublytic C5b-9 complex formation on glomerular mesangial cells (GMCs) and renal MCP-1 and RANTES production in rats with Thy-1N have been proved, the role and mechanism of MCP-1 or RANTES synthesis in GMCs induced by sublytic C5b-9 are poorly elucidated. In this study, we first found the expression of transcription factor (KLF6), co-activator (KAT7) and chemokines (MCP-1 and RANTES) was all up-regulated both in renal tissue of Thy-1N rats (in vivo) and in sublytic C5b-9-induced GMCs (in vitro). Further in vitro experiments revealed that KLF6 bound to MCP-1 promoter (-297 to -123 nt) and RANTES promoter (-343 to -191 nt), leading to MCP-1 and RANTES gene transcription. Meanwhile, KAT7 also bound to the same region of MCP-1 and RANTES promoter in a KLF6-dependent manner, and KLF6 was acetylated by KAT7 at lysine residue 100, which finally promoted MCP-1 and RANTES expression. Moreover, our in vivo experiments discovered that knockdown of renal KAT7 or KLF6 gene obviously reduced MCP-1 and RANTES production, GMCs proliferation, ECM accumulation, and proteinuria secretion in Thy-1N rats. Collectively, our study indicates that sublytic C5b-9-induced MCP-1 and RANTES synthesis is associated with KAT7-mediated KLF6 acetylation and elevated KLF6 transcriptional activity, which might provide a new insight into the pathogenesis of rat Thy-1N and human MsPGN.
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Affiliation(s)
- Tianyi Yu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yajuan Gong
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yu Liu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Lu Xia
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Chenhui Zhao
- Department of Oncology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Longfei Liu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Mengxiao Xie
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Zhijiao Wu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Dan Zhao
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Wen Qiu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yingwei Wang
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Jing Zhang
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Antibody Technology of Ministry of Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Mingde Ji
- Department of Laboratory Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, China
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