1
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Shi FL, Yuan LS, Wong TS, Li Q, Li YP, Xu R, You YP, Yuan T, Zhang HR, Shi ZJ, Zha QB, Hu B, He XH, Ouyang DY. Dimethyl fumarate inhibits necroptosis and alleviates systemic inflammatory response syndrome by blocking the RIPK1-RIPK3-MLKL axis. Pharmacol Res 2023; 189:106697. [PMID: 36796462 DOI: 10.1016/j.phrs.2023.106697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/16/2023]
Abstract
Necroptosis has been implicated in various inflammatory diseases including tumor-necrosis factor-α (TNF-α)-induced systemic inflammatory response syndrome (SIRS). Dimethyl fumarate (DMF), a first-line drug for treating relapsing-remitting multiple sclerosis (RRMS), has been shown to be effective against various inflammatory diseases. However, it is still unclear whether DMF can inhibit necroptosis and confer protection against SIRS. In this study, we found that DMF significantly inhibited necroptotic cell death in macrophages induced by different necroptotic stimulations. Both the autophosphorylation of receptor-interacting serine/threonine kinase 1 (RIPK1) and RIPK3 and the downstream phosphorylation and oligomerization of MLKL were robustly suppressed by DMF. Accompanying the suppression of necroptotic signaling, DMF blocked the mitochondrial reverse electron transport (RET) induced by necroptotic stimulation, which was associated with its electrophilic property. Several well-known anti-RET reagents also markedly inhibited the activation of the RIPK1-RIPK3-MLKL axis accompanied by decreased necrotic cell death, indicating a critical role of RET in necroptotic signaling. DMF and other anti-RET reagents suppressed the ubiquitination of RIPK1 and RIPK3, and they attenuated the formation of necrosome. Moreover, oral administration of DMF significantly alleviated the severity of TNF-α-induced SIRS in mice. Consistent with this, DMF mitigated TNF-α-induced cecal, uterine, and lung damage accompanied by diminished RIPK3-MLKL signaling. Collectively, DMF represents a new necroptosis inhibitor that suppresses the RIPK1-RIPK3-MLKL axis through blocking mitochondrial RET. Our study highlights DMF's potential therapeutic applications for treating SIRS-associated diseases.
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Affiliation(s)
- Fu-Li Shi
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Li-Sha Yuan
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Tak-Sui Wong
- Department of Nephrology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Qing Li
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ya-Ping Li
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Rong Xu
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yi-Ping You
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Tao Yuan
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hong-Rui Zhang
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Zi-Jian Shi
- Department of Fetal Medicine, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Qing-Bing Zha
- Department of Fetal Medicine, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China; Department of Clinical Laboratory, the Fifth Affiliated Hospital of Jinan University, Heyuan 517000, China
| | - Bo Hu
- Department of Nephrology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
| | - Xian-Hui He
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; Department of Clinical Laboratory, the Fifth Affiliated Hospital of Jinan University, Heyuan 517000, China.
| | - Dong-Yun Ouyang
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
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2
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Xu J, Zhang X, Zhou M, Lu P, Xu Y, Wu L, Zhang Q, Wu Z, Xu X, Shi P, Wei Q, Li X, Song Q. Bioactive compound C498-0670 alleviates LPS-induced sepsis via JAK/STAT and NFκB signaling pathways. Front Immunol 2023; 14:1132265. [PMID: 37122731 PMCID: PMC10140310 DOI: 10.3389/fimmu.2023.1132265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/27/2023] [Indexed: 05/02/2023] Open
Abstract
The JAK/STAT and NFκB signaling pathways are two major inflammatory signaling pathways that are usually activated simultaneously in the body's inflammatory response to bacterial or viral infections. Hyperactivation of these two prominent signaling pathways is associated with various immune-related diseases and mortality, pointing to an urgent need for drug development targeting JAK/STAT and/or NFκB signaling. In this study, we screened 18,840 compounds using our well-established dual STAT-NFκB driven luciferase reporter based high-throughput screening system and identified a bioactive compound C498-0670, which inhibits both JAK/STAT and NFκB signaling. C498-0670 inhibits the activation of STATs and p-IKKα/β in both the immortalized cell lines and primary peritoneal macrophages, while suppressing the expression of LPS-induced inflammatory mediators in vitro. In addition, the overall anti-inflammatory effects of C498-0670 were investigated using transcriptome sequencing and bioinformatics approaches. C498-0670 was predicted to alleviate sepsis/septic shock by disease/function analysis using IPA software, which was further verified in the LPS-induced mouse sepsis model in vivo. C498 reduced LPS-induced liver and kidney damage, myeloid cell infiltration, and pro-inflammatory cytokine and chemokine production in vivo. Furthermore, the SPR-HPLC-MS-based target fishing approach was used to identify the putative drug targets, and the high affinities of JAK2 (JAK/STAT signaling), NFKBIA (NFκB signaling), and IL-1β, NLRP1b (inflammasome signaling) for C498-0670 were verified by molecular docking approach. These results suggest that C498-0670 can be used as a dual-target inhibitor of JAK/STAT and NFκB signaling pathways for the treatment of various inflammatory diseases, especially septic shock.
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Affiliation(s)
- Jing Xu
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, China
- Innovation Platform of Marine Drug Screening & Evaluation, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Xinxin Zhang
- Innovation Platform of Marine Drug Screening & Evaluation, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Mingming Zhou
- Innovation Platform of Marine Drug Screening & Evaluation, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Peizhe Lu
- Department of Neuroscience, University of Michigan, Ann Arbor, MI, United States
| | - Yuting Xu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Lihong Wu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Qianyue Zhang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Zhihua Wu
- Innovation Platform of Marine Drug Screening & Evaluation, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Xiaoyu Xu
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Pengfei Shi
- Innovation Platform of Marine Drug Screening & Evaluation, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Qingda Wei
- School of Medicine, Zhengzhou University, Zhengzhou, China
| | - Xiaoyu Li
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, China
- *Correspondence: Xiaoyu Li, ; Qiaoling Song,
| | - Qiaoling Song
- Innovation Platform of Marine Drug Screening & Evaluation, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- *Correspondence: Xiaoyu Li, ; Qiaoling Song,
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3
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Wang ZH, Feng Y, Hu Q, Wang XL, Zhang L, Liu TT, Zhang JT, Yang X, Fu QY, Fu DN, Hu J, Liu T. Keratinocyte TLR2 and TLR7 contribute to chronic itch through pruritic cytokines and chemokines in mice. J Cell Physiol 2023; 238:257-273. [PMID: 36436135 DOI: 10.1002/jcp.30923] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 11/28/2022]
Abstract
Although neuronal Toll-like receptors (TLRs) (e.g., TLR2, TLR3, and TLR7) have been implicated in itch sensation, the roles of keratinocyte TLRs in chronic itch are elusive. Herein, we evaluated the roles of keratinocyte TLR2 and TLR7 in chronic itch under dry skin and psoriasis conditions, which was induced by either acetone-ether-water treatment or 5% imiquimod cream in mice, respectively. We found that TLR2 and TLR7 signaling were significantly upregulated in dry skin and psoriatic skin in mice. Chronic itch and epidermal hyperplasia induced by dry skin or psoriasis were comparably reduced in TLR2 and TLR7 knockout mice. In the dry skin model, the enhanced messenger RNA (mRNA) expression levels of pruritic CXCL1/2, IL-31, IL-33, ST2, IL-6, IL-17A, TNF-α, and IFN-γ were inhibited in TLR2-/- mice, while CXCL2, IL-31, and IL-6 were inhibited in TLR7-/- mice. In psoriasis model, the enhanced mRNA expression levels of pruritic CXCL1/2, IL-31, IL-33, ST2, IL-6, and TNF-α were inhibited in TLR2-/- mice, while CXCL1/2, IL-31, IL-33, ST2, IL-6, IL-17A, and TNF-α were inhibited in TLR7-/- mice. Incubation with Staphylococcus aureus (S. aureus) peptidoglycan (PGN-SA) (a TLR2 agonist), imiquimod (a TLR7 agonist), and miR142-3p (a putative TLR7 agonist) were sufficient to upregulate the expression of pruritic cytokines or chemokines in cultured keratinocyte HaCaT cells. Finally, pharmacological blockade of C-X-C Motif Chemokine Receptor 1/2 and high mobility group box protein 1 dose-dependently attenuated acute and chronic itch in mice. Together, these results indicate that keratinocyte TLR2 and TLR7 signaling pathways are distinctly involved in the pathogenesis of chronic itch.
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Affiliation(s)
- Zhi-Hong Wang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Yu Feng
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Qingfang Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xue-Long Wang
- Department of Thoracic Surgery, Capital Medical University Electric Power Teaching Hospital Beijing, Beijing, China
| | - Li Zhang
- Department of Anesthesiology, The First People's Hospital of Kunshan Affiliated with Jiangsu University, Kunshan, China
| | - Teng-Teng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Jiang-Tao Zhang
- Institute of Pain Medicine and Special Environmental Medicine, Nantong University, Nantong, China
| | - Xiaohua Yang
- The Affiliated Haian Hospital of Nantong University, Haian, China
| | - Qing-Yue Fu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Dan-Ni Fu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Tong Liu
- Institute of Pain Medicine and Special Environmental Medicine, Nantong University, Nantong, China.,College of Life Sciences, Yanan University, Yanan, China.,Suzhou Key Laboratory of Intelligent Medicine and Equipment, Soochow University, Suzhou, China
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4
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Li M, Yan Y, Zhang X, Zhang Y, Xu X, Zhang L, Lu L, Wang J, Zhang Y, Song Q, Zhao C. Scaffold compound L971 exhibits anti-inflammatory activities through inhibition of JAK/STAT and NFκB signalling pathways. J Cell Mol Med 2021; 25:6333-6347. [PMID: 34018320 PMCID: PMC8256347 DOI: 10.1111/jcmm.16609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 12/17/2022] Open
Abstract
JAK/STAT and NFκB signalling pathways play essential roles in regulating inflammatory responses, which are important pathogenic factors of various serious immune-related diseases, and function individually or synergistically. To find prodrugs that can treat inflammation, we performed a preliminary high-throughput screening of 18 840 small molecular compounds and identified scaffold compound L971 which significantly inhibited JAK/STAT and NFκB driven luciferase activities. L971 could inhibit the constitutive and stimuli-dependent activation of STAT1, STAT3 and IκBα and could significantly down-regulate the proinflammatory gene expression in mouse peritoneal macrophages stimulated by LPS. Gene expression profiles upon L971 treatment were determined using high-throughput RNA sequencing, and significant differentially up-regulated and down-regulated genes were identified by DESeq analysis. The bioinformatic studies confirmed the anti-inflammatory effects of L971. Finally, L971 anti-inflammatory character was further verified in LPS-induced sepsis shock mouse model in vivo. Taken together, these data indicated that L971 could down-regulate both JAK/STAT and NFκB signalling activities and has the potential to treat inflammatory diseases such as sepsis shock.
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Affiliation(s)
- Mengyuan Li
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Yu Yan
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Xinxin Zhang
- Innovation Platform of Marine Drug Screening & EvaluationQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
| | - Yidan Zhang
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Xiaohan Xu
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Lei Zhang
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Liangliang Lu
- School of Life ScienceLanzhou UniversityLanzhouChina
| | - Jie Wang
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Yazhuo Zhang
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
| | - Qiaoling Song
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
- Innovation Platform of Marine Drug Screening & EvaluationQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
| | - Chenyang Zhao
- School of Medicine and PharmacyOcean University of ChinaQingdaoChina
- Innovation Platform of Marine Drug Screening & EvaluationQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
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5
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Ciummo SL, D’Antonio L, Sorrentino C, Fieni C, Lanuti P, Stassi G, Todaro M, Di Carlo E. The C-X-C Motif Chemokine Ligand 1 Sustains Breast Cancer Stem Cell Self-Renewal and Promotes Tumor Progression and Immune Escape Programs. Front Cell Dev Biol 2021; 9:689286. [PMID: 34195201 PMCID: PMC8237942 DOI: 10.3389/fcell.2021.689286] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/17/2021] [Indexed: 01/01/2023] Open
Abstract
Breast cancer (BC) mortality is mainly due to metastatic disease, which is primarily driven by cancer stem cells (CSC). The chemokine C-X-C motif ligand-1 (CXCL1) is involved in BC metastasis, but the question of whether it regulates breast cancer stem cell (BCSC) behavior is yet to be explored. Here, we demonstrate that BCSCs express CXCR2 and produce CXCL1, which stimulates their proliferation and self-renewal, and that CXCL1 blockade inhibits both BCSC proliferation and mammosphere formation efficiency. CXCL1 amplifies its own production and remarkably induces both tumor-promoting and immunosuppressive factors, including SPP1/OPN, ACKR3/CXCR7, TLR4, TNFSF10/TRAIL and CCL18 and, to a lesser extent, immunostimulatory cytokines, including IL15, while it downregulates CCL2, CCL28, and CXCR4. CXCL1 downregulates TWIST2 and SNAI2, while it boosts TWIST1 expression in association with the loss of E-Cadherin, ultimately promoting BCSC epithelial-mesenchymal transition. Bioinformatic analyses of transcriptional data obtained from BC samples of 1,084 patients, reveals that CXCL1 expressing BCs mostly belong to the Triple-Negative (TN) subtype, and that BC expression of CXCL1 strongly correlates with that of pro-angiogenic and cancer promoting genes, such as CXCL2-3-5-6, FGFBP1, BCL11A, PI3, B3GNT5, BBOX1, and PTX3, suggesting that the CXCL1 signaling cascade is part of a broader tumor-promoting signaling network. Our findings reveal that CXCL1 functions as an autocrine growth factor for BCSCs and elicits primarily tumor progression and immune escape programs. Targeting the CXCL1/CXCR2 axis could restrain the BCSC compartment and improve the treatment of aggressive BC.
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Affiliation(s)
- Stefania Livia Ciummo
- Department of Medicine and Sciences of Aging, “G. d’Annunzio” University, Chieti, Italy
- Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University, Chieti, Italy
| | - Luigi D’Antonio
- Department of Medicine and Sciences of Aging, “G. d’Annunzio” University, Chieti, Italy
- Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University, Chieti, Italy
| | - Carlo Sorrentino
- Department of Medicine and Sciences of Aging, “G. d’Annunzio” University, Chieti, Italy
- Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University, Chieti, Italy
| | - Cristiano Fieni
- Department of Medicine and Sciences of Aging, “G. d’Annunzio” University, Chieti, Italy
- Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University, Chieti, Italy
| | - Paola Lanuti
- Department of Medicine and Sciences of Aging, “G. d’Annunzio” University, Chieti, Italy
| | - Giorgio Stassi
- Department of Surgical, Oncological and Stomatological Sciences (DICHIRONS), University of Palermo, Palermo, Italy
| | - Matilde Todaro
- Department of Health Promotion Sciences, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy
| | - Emma Di Carlo
- Department of Medicine and Sciences of Aging, “G. d’Annunzio” University, Chieti, Italy
- Anatomic Pathology and Immuno-Oncology Unit, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University, Chieti, Italy
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6
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Chaumonnot K, Masson S, Sikner H, Bouchard A, Baverel V, Bellaye PS, Collin B, Garrido C, Kohli E. The HSP GRP94 interacts with macrophage intracellular complement C3 and impacts M2 profile during ER stress. Cell Death Dis 2021; 12:114. [PMID: 33483465 PMCID: PMC7822929 DOI: 10.1038/s41419-020-03288-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/17/2022]
Abstract
The role of GRP94, an endoplasmic reticulum (ER) stress protein with both pro- and anti-inflammatory functions, has not been investigated in macrophages during ER stress, whereas ER stress has been reported in many diseases involving macrophages. In this work, we studied GRP94 in M1/LPS + IFNγ and M2/IL-4 primary macrophages derived from human monocytes (isolated from buffy coats), in basal and ER stress conditions induced by thapsigargin (Tg), an inducer of ER calcium depletion and tunicamycin (Tm), an inhibitor of N-glycosylation. We found that GRP94 was expressed on the membrane of M2 but not M1 macrophages. In M2, Tg, but not Tm, while decreased GRP94 content in the membrane, it induced its secretion. This correlated with the induction of a pro-inflammatory profile, which was dependent on the UPR IRE1α arm activation and on a functional GRP94. As we previously reported that GRP94 associated with complement C3 at the extracellular level, we analyzed C3 and confirmed GRP94-C3 interaction in our experimental model. Further, Tg increased this interaction and, in these conditions, C3b and cathepsin L were detected in the extracellular medium where GRP94 co-immunoprecipitated with C3 and C3b. Finally, we showed that the C3b inactivated fragment, iC3b, only present on non-stressed M2, depended on functional GRP94, making both GRP94 and iC3b potential markers of M2 cells. In conclusion, our results show that GRP94 is co-secreted with C3 under ER stress conditions which may facilitate its cleavage by cathepsin L, thus contributing to the pro-inflammatory profile observed in stressed M2 macrophages.
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Affiliation(s)
- Killian Chaumonnot
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,UFR des Sciences de Santé, Université de Bourgogne, Dijon, France
| | - Sophie Masson
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,UFR des Sciences de Santé, Université de Bourgogne, Dijon, France.,Centre anti-cancéreux Georges François Leclerc, Dijon, France
| | - Hugo Sikner
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,UFR des Sciences de Santé, Université de Bourgogne, Dijon, France
| | - Alexanne Bouchard
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,Centre anti-cancéreux Georges François Leclerc, Dijon, France
| | - Valentin Baverel
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,UFR des Sciences de Santé, Université de Bourgogne, Dijon, France
| | - Pierre-Simon Bellaye
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,Centre anti-cancéreux Georges François Leclerc, Dijon, France
| | - Bertrand Collin
- UFR des Sciences de Santé, Université de Bourgogne, Dijon, France.,Centre anti-cancéreux Georges François Leclerc, Dijon, France.,UMR uB/CNRS 6302, Institut de Chimie Moléculaire, Dijon, France
| | - Carmen Garrido
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France.,UFR des Sciences de Santé, Université de Bourgogne, Dijon, France.,Centre anti-cancéreux Georges François Leclerc, Dijon, France
| | - Evelyne Kohli
- UMR INSERM/uB/AGROSUP 1231, Team 3 HSP-Pathies, labellisée Ligue Nationale contre le Cancer and Laboratoire d'Excellence LipSTIC, Dijon, France. .,UFR des Sciences de Santé, Université de Bourgogne, Dijon, France. .,CHU, Dijon, France.
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7
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Diesel Exhaust Particulates Induce Neutrophilic Lung Inflammation by Modulating Endoplasmic Reticulum Stress-Mediated CXCL1/KC Expression in Alveolar Macrophages. Molecules 2020; 25:molecules25246046. [PMID: 33371364 PMCID: PMC7767360 DOI: 10.3390/molecules25246046] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/25/2022] Open
Abstract
Diesel exhaust particulates (DEP) have adverse effects on the respiratory system. Endoplasmic reticulum (ER) abnormalities contribute to lung inflammation. However, the relationship between DEP exposure and ER stress in the respiratory immune system and especially the alveolar macrophages (AM) is poorly understood. Here, we examined ER stress and inflammatory responses using both in vivo and in vitro study. For in vivo study, mice were intratracheally instilled with 25, 50, and 100 μg DEP and in vitro AM were stimulated with DEP at 1, 2, and 3 mg/mL. DEP increased lung weight and the number of inflammatory cells, especially neutrophils, and inflammatory cytokines in bronchoalveolar lavage fluid of mice. DEP also increased the number of DEP-pigmented AM and ER stress markers including bound immunoglobulin protein (BiP) and CCAAT/enhancer binding protein-homologous protein (CHOP) were upregulated in the lungs of DEP-treated mice. In an in vitro study, DEP caused cell damage, increased intracellular reactive oxygen species, and upregulated inflammatory genes and ER stress-related BiP, CHOP, splicing X-box binding protein 1, and activating transcription factor 4 expressions in AM. Furthermore, DEP released the C-X-C Motif Chemokine Ligand 1 (CXCL1/KC) in AM. In conclusion, DEP may contribute to neutrophilic lung inflammation pathogenesis by modulating ER stress-mediated CXCL1/KC expression in AM.
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8
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Huang C, Hedl M, Ranjan K, Abraham C. LACC1 Required for NOD2-Induced, ER Stress-Mediated Innate Immune Outcomes in Human Macrophages and LACC1 Risk Variants Modulate These Outcomes. Cell Rep 2020; 29:4525-4539.e4. [PMID: 31875558 DOI: 10.1016/j.celrep.2019.11.105] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 09/17/2019] [Accepted: 11/25/2019] [Indexed: 12/14/2022] Open
Abstract
LACC1 genetic variants are associated with multiple immune-mediated diseases. However, laccase domain containing-1 (LACC1) functions are incompletely defined. We find that upon stimulation of the pattern-recognition receptor (PRR) NOD2, LACC1 localizes to the endoplasmic reticulum (ER) and forms a complex with ER-stress sensors. All three ER-stress branches, PERK, IRE1α, and ATF6, are required for NOD2-induced signaling, cytokines, and antimicrobial pathways in human macrophages. LACC1, and its localization to the ER, is required for these outcomes. Relative to wild-type (WT) LACC1, transfection of the common Val254 and rare Arg284 immune-mediated disease-risk LACC1 variants into HeLa cells and macrophages, as well as macrophages from LACC1 Val254 carriers, shows reduced NOD2-induced ER stress-associated outcomes; these downstream outcomes are restored by rescuing ER stress. Therefore, we identify ER stress to be essential in PRR-induced outcomes in macrophages, define a critical role for LACC1 in these ER stress-dependent events, and elucidate how LACC1 disease-risk variants mediate these outcomes.
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Affiliation(s)
- Chen Huang
- Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT 06510, USA
| | - Matija Hedl
- Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT 06510, USA
| | - Kishu Ranjan
- Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT 06510, USA
| | - Clara Abraham
- Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT 06510, USA.
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9
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Su F, Song Q, Zhang C, Xu X, Li M, Yao D, Wu L, Qu X, Guan H, Yu G, Yang J, Zhao C. A β-1,3/1,6-glucan from Durvillaea Antarctica inhibits tumor progression in vivo as an immune stimulator. Carbohydr Polym 2019; 222:114993. [PMID: 31320068 DOI: 10.1016/j.carbpol.2019.114993] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/29/2022]
Abstract
β-glucans trigger the proinflammatory responses of innate immune cells to enhance the host defense. A variety of β-glucans were identified as strong immune stimulator and exerted antitumor activities. Our previous work indicates that a β-1,3/1,6-glucan (BG136) derived from marina alga Durvillaea antarctica promotes the proinflammatory responses in macrophage cell line RAW264.7. In the present study, we further explored its antitumor effects in vivo as an immune stimulator. The data shows that BG136 alone decreases the tumor burdens in DLD1 xenograft and AOM-DSS induced tumor models. BG136 also augments the antitumor effects of PD-1 antibody in B16 syngeneic tumor model. BG136 increases macrophage phagocytosis, enhances cytokine/chemokine secretion and modulates the systemic and intratumoral immune cell composition. Collectively, these data suggest that BG136 might act as an immune stimulator to exert antitumor effects in vivo.
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Affiliation(s)
- Fan Su
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China
| | - Qiaoling Song
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China; Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China
| | - Chuanliang Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China; Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China
| | - Xiaohan Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China
| | - Mengyuan Li
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China
| | - Dan Yao
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China; Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China
| | - Lijuan Wu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China; Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China
| | - Xianjun Qu
- Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China
| | - Huashi Guan
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China
| | - Guangli Yu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China.
| | - Jinbo Yang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China; Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China.
| | - Chenyang Zhao
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266071, China; Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, 23 East Hong Kong Road, Qingdao, Shandong, 266100, China.
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10
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TMEM203 is a binding partner and regulator of STING-mediated inflammatory signaling in macrophages. Proc Natl Acad Sci U S A 2019; 116:16479-16488. [PMID: 31346090 PMCID: PMC6697806 DOI: 10.1073/pnas.1901090116] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Activators of interferons have received a great deal of interest in recent decades, both due to the central role they play in host defense against a range of pathogens, as well as the now well-recognized importance of dysregulated interferon activation/signaling in the pathogenesis of a number of highly prevalent and hard-to-treat diseases, such as systemic lupus erythematosus (SLE). Therefore, novel regulators of interferon activation are being sought as they may provide better targets to treat these diseases. We report the discovery of TMEM203 as an SLE-associated gene and a regulator of ligand-dependent activation of interferon production via STING. Thus, our work could form the basis of a novel therapeutic strategy for the treatment of interferonopathies, including SLE. Regulation of IFN signaling is critical in host recognition and response to pathogens while its dysregulation underlies the pathogenesis of several chronic diseases. STimulator of IFN Genes (STING) has been identified as a critical mediator of IFN inducing innate immune pathways, but little is known about direct coregulators of this protein. We report here that TMEM203, a conserved putative transmembrane protein, is an intracellular regulator of STING-mediated signaling. We show that TMEM203 interacts, functionally cooperates, and comigrates with STING following cell stimulation, which in turn leads to the activation of the kinase TBK1, and the IRF3 transcription factor. This induces target genes in macrophages, including IFN-β. Using Tmem203 knockout bone marrow-derived macrophages and transient knockdown of TMEM203 in human monocyte-derived macrophages, we show that TMEM203 protein is required for cGAMP-induced STING activation. Unlike STING, TMEM203 mRNA levels are elevated in T cells from patients with systemic lupus erythematosus, a disease characterized by the overexpression of type I interferons. Moreover, TMEM203 mRNA levels are associated with disease activity, as assessed by serum levels of the complement protein C3. Identification of TMEM203 sheds light into the control of STING-mediated innate immune responses, providing a potential novel mechanism for therapeutic interventions in STING-associated inflammatory diseases.
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11
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Hansen IS, Schoonejans JM, Sritharan L, van Burgsteden JA, Ambarus CA, Baeten DLP, den Dunnen J. ER stress abrogates the immunosuppressive effect of IL-10 on human macrophages through inhibition of STAT3 activation. Inflamm Res 2019; 68:775-785. [PMID: 31227842 PMCID: PMC6667425 DOI: 10.1007/s00011-019-01261-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 04/23/2019] [Accepted: 06/12/2019] [Indexed: 01/08/2023] Open
Abstract
Objective and design To determine whether ER stress affects the inhibitory pathways of the human immune system, particularly the immunosuppressive effect of IL-10 on macrophages. Material or subjects In vitro stimulation of human monocyte-derived macrophages. Treatment Cells were stimulated with TLR ligands and IL-10, while ER stress was induced using thapsigargin or tunicamycin. Methods mRNA expression was determined using qPCR, while cytokine protein production was measured using ELISA. Protein expression of receptors and transcription factors was determined using flow cytometry. Student’s t test was used for statistics. Results While under normal conditions IL-10 potently suppresses pro-inflammatory cytokine production by LPS-stimulated macrophages, we demonstrate that ER stress counteracts the immunosuppressive effects of IL-10, leading to increased pro-inflammatory cytokine production. We identified that ER stress directly interferes with IL-10R signaling by reducing STAT3 phosphorylation on Tyr705, which thereby inhibits the expression of SOCS3. Moreover, we show that ER stress also inhibits STAT3 activation induced by other receptors such as IL-6R. Conclusions Combined, these data uncover a new general mechanism by which ER stress promotes inflammation. Considering its potential involvement in the pathogenesis of diseases such as Crohn’s disease and spondyloarthritis, targeting of this mechanism may provide new opportunities to counteract inflammation.
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Affiliation(s)
- Ivo S Hansen
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Josca M Schoonejans
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Lathees Sritharan
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Johan A van Burgsteden
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Carmen A Ambarus
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Dominique L P Baeten
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Jeroen den Dunnen
- Amsterdam Rheumatology and Immunology Center, Location Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. .,Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
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12
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Zhang L, Pavicic PG, Datta S, Song Q, Xu X, Wei W, Su F, Rayman PA, Zhao C, Hamilton T. Unfolded Protein Response Differentially Regulates TLR4-Induced Cytokine Expression in Distinct Macrophage Populations. Front Immunol 2019; 10:1390. [PMID: 31293572 PMCID: PMC6598306 DOI: 10.3389/fimmu.2019.01390] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/03/2019] [Indexed: 12/22/2022] Open
Abstract
Cellular stress responses are often engaged at sites of inflammation and can alter macrophage cytokine production. We now report that macrophages in distinct states of differentiation or in different temporal stages of inflammatory response exhibit differential sensitivity to cell stress mediated alterations in M1-like polarized inflammatory cytokine production. Tunicamycin (Tm) treatment of bone marrow derived macrophages (BMDM) cultured with M-CSF cultured bone marrow derived macrophages (M-BMDM) had markedly amplified M1-like responses to LPS, exhibiting higher levels of IL12p40 and IL12p35 mRNAs while BMDM cultured with GM-CSF, which normally express high IL12 subunit production in response to LPS, were relatively unaltered. Anti-inflammatory IL10 mRNA production in LPS-stimulated M-BMDM was greatly reduced by cell stress. These changes in cytokine mRNA levels resulted from altered rates of transcription and mRNA decay. Stress also altered cytokine protein production. Resident liver macrophages isolated from mice treated with Tm showed elevated levels of IL12 subunit mRNA production following LPS stimulation. Furthermore, macrophages infiltrating the liver during the early phase of acetaminophen injury (24 h) had little stress-mediated change in cytokine mRNA production while cells isolated in the later phase (48–72 h) exhibited higher sensitivity for stress elevated cytokine production. Hence cultured macrophages developed using different growth/differentiation factors and macrophages from different temporal stages of injury in vivo show markedly different sensitivity to cell stress for altered inflammatory cytokine production. These findings suggest that cellular stress can be an important modulator of the magnitude and character of myeloid inflammatory activity.
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Affiliation(s)
- Lei Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Paul G Pavicic
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Shyamasree Datta
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Qiaoling Song
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Xiaohan Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Wei Wei
- School of Life Science, Lanzhou University, Lanzhou, China
| | - Fan Su
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Patricia A Rayman
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Chenyang Zhao
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Thomas Hamilton
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
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13
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A partial agonist for retinoid X receptor mitigates experimental colitis. Int Immunol 2018; 31:251-262. [DOI: 10.1093/intimm/dxy089] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 12/24/2018] [Indexed: 12/14/2022] Open
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14
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Liang S, Lv ZT, Zhang JM, Wang YT, Dong YH, Wang ZG, Chen K, Cheng P, Yang Q, Guo FJ, Lu WW, Zhu WT, Chen AM. Necrostatin-1 Attenuates Trauma-Induced Mouse Osteoarthritis and IL-1β Induced Apoptosis via HMGB1/TLR4/SDF-1 in Primary Mouse Chondrocytes. Front Pharmacol 2018; 9:1378. [PMID: 30542285 PMCID: PMC6277802 DOI: 10.3389/fphar.2018.01378] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/09/2018] [Indexed: 01/08/2023] Open
Abstract
Necrostatin-1 (Nec-1) is a specific small molecule inhibitor of receptor-interacting protein kinase 1 (RIPK1) that specifically inhibits phosphorylation of RIPK1. RIPK1 regulates inflammation and cell death by interacting with receptor-interacting serine/threonine protein kinases 3(RIPK3). We hypothesized that Nec-1 may have anti-inflammatory efficacy in patients with osteoarthritis (OA), as the pathophysiology of OA involves the activation of inflammation-related signaling pathways and apoptosis. In this study, we explored the effects of Nec-1 on interleukin (IL)-1β-induced inflammation in mouse chondrocytes and the destabilised medial meniscus (DMM) mouse model. Inhibiting RIPK1 with Nec-1 dramatically suppressed catabolism both in vivo and in vitro, but did not inhibit changes in subchondral bone. Nec-1 abolished the in vitro increases in matrix metalloproteinase (MMP) and ADAM metallopeptidase with thrombospondin type 1 motif 5 (ADAMTs5) expression induced by IL-1β. However, adding high-mobility group box 1 (HMGB1) partially abrogated this effect, indicating the essential role of HMGB1 and Nec-1 in the protection of primary chondrocytes. Furthermore, Nec-1 decreased the expression of Toll-like receptor 4 (TLR4) and stromal cell-derived factor-1 (SDF-1), and attenuated the interaction between TLR4 and HMGB1. Western blot results suggested that Nec-1 significantly suppressed IL-1β-induced NF-κB transcriptional activity, but not MAPK pathway. Micro-computed tomography, immunohistochemical staining, and Safranin O/Fast Green staining were used in vivo to assess the degree of destruction of OA cartilage. The results show that NEC-1 can significantly reduce the degree of destruction of OA cartilage. Therefore, Nec-1 may be a novel therapeutic candidate to treat OA.
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Affiliation(s)
- Shuang Liang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Zheng-Tao Lv
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China.,Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, United States
| | - Jia-Ming Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Yu-Ting Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Yong-Hui Dong
- Department of Orthopaedic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Zheng-Gang Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Kun Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China.,Department of Orthopaedic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Peng Cheng
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Qing Yang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Feng-Jing Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Wei-Wei Lu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Wen-Tao Zhu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - An-Min Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
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15
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α1-Antitrypsin Polymerizes in Alveolar Macrophages of Smokers With and Without α1-Antitrypsin Deficiency. Chest 2018; 154:607-616. [DOI: 10.1016/j.chest.2018.04.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/05/2018] [Accepted: 04/24/2018] [Indexed: 12/21/2022] Open
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16
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Zhou X, An D, Liu X, Jiang M, Yuan C, Hu J. TNFα induces tolerant production of CXC chemokines in colorectal cancer HCT116 cells via A20 inhibition of ERK signaling. Int Immunopharmacol 2017; 54:296-302. [PMID: 29175508 DOI: 10.1016/j.intimp.2017.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 11/21/2017] [Accepted: 11/21/2017] [Indexed: 12/16/2022]
Abstract
Ubiquitin editing enzyme A20 functions as a tumor suppressor in various cancer. However, the mechanism for A20 regulation of cancer progress is not fully understood. In this study, we found that in human colorectal cancer HCT116 cells, TNFα induced a tolerant production of CXC chemokines, including CXCL1, 2, and 8 in a dose and time dependent manner. TNFα pre-treatment of HCT116 cells down-regulated the chemokine production induced by TNFα re-treatment. TNFα induced the phosphorylation of MAPKs ERK, JNK, P38 and NF-κB P65, but only ERK inhibition decreased TNFα-induced chemokine production. Both RT-PCR and FACS results showed that TNFα treatment did not regulate the expression of TNF receptors. However, TNFα up-regulated the expression of A20 at both mRNA and protein levels significantly. TNFα pre-treatment inhibited the signal transduction of MAPKs induced by TNFα re-stimulation, and A20 over-expression decreased the signal transduction of ERK and P38. Meanwhile, A20 inhibition by RNA interference reversed chemokine down-regulation induced by TNFα re-stimulation after TNFα pre-treatment. Taken together, these results suggested that in human colorectal cancer cells, A20 may function to inhibit cancer progression via down-regulation of TNFα-induced chemokine production by suppression of ERK signaling.
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Affiliation(s)
- Xin Zhou
- Changsha Cancer Institute, Changsha Central Hospital, Changsha, Hunan 410004, China; Graduate School, University of South China, Hengyang, Hunan 421001, China
| | - Dongjian An
- Changsha Cancer Institute, Changsha Central Hospital, Changsha, Hunan 410004, China.
| | - Xueting Liu
- Medical Research Center, Changsha Central Hospital, Changsha, Hunan 410004, China
| | - Manli Jiang
- Medical Research Center, Changsha Central Hospital, Changsha, Hunan 410004, China
| | - Chuang Yuan
- Medical Research Center, Changsha Central Hospital, Changsha, Hunan 410004, China
| | - Jinyue Hu
- Medical Research Center, Changsha Central Hospital, Changsha, Hunan 410004, China.
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17
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Rao Z, Sun J, Pan X, Chen Z, Sun H, Zhang P, Gao M, Ding Z, Liu C. Hyperglycemia Aggravates Hepatic Ischemia and Reperfusion Injury by Inhibiting Liver-Resident Macrophage M2 Polarization via C/EBP Homologous Protein-Mediated Endoplasmic Reticulum Stress. Front Immunol 2017; 8:1299. [PMID: 29081777 PMCID: PMC5645540 DOI: 10.3389/fimmu.2017.01299] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 09/27/2017] [Indexed: 12/13/2022] Open
Abstract
Aggravated liver ischemia and reperfusion (IR) injury has been observed in hyperglycemic hosts, but its underlying mechanism remains undefined. Liver-resident macrophages (Kupffer cells, KCs) and endoplasmic reticulum (ER) stress play crucial roles in the pathogenesis of liver IR injury. In this study, we evaluated the role of ER stress in regulating KC activation and liver IR injury in a streptozotocin-induced hyperglycemic/diabetic mouse model. Compared to the control group (CON group), hyperglycemic mice exhibited a significant increase in liver injury and intrahepatic inflammation following IR. KCs obtained from hyperglycemic mice secreted higher levels of the pro-inflammatory factors TNF-α and IL-6, while they secreted significantly lower levels of the anti-inflammatory factor IL-10. Furthermore, enhanced ER stress was revealed by increased C/EBP homologous protein (CHOP) activation in both IR-stressed livers and KCs from hyperglycemic mice. Specific CHOP knockdown in KCs by siRNA resulted in a slight decrease in TNF-α and IL-6 secretion but dramatically enhanced anti-inflammatory IL-10 secretion in the hyperglycemic group, while no significant changes in cytokine production were observed in the CON group. We also analyzed the role of hyperglycemia in macrophage M1/M2 polarization. Interestingly, we found that hyperglycemia inhibited IL-10-secreting M2-like macrophage polarization, as revealed by decreased Arg1 and Mrc1 gene induction accompanied by a decrease in STAT3 and STAT6 signaling pathway activation. CHOP knockdown restored Arg1 and Mrc1 gene induction, STAT3 and STAT6 activation, and most importantly, IL-10 secretion in hyperglycemic KCs. Finally, in vivo CHOP knockdown in KCs enhanced intrahepatic anti-inflammatory IL-10 gene induction and protected the liver against IR injury in hyperglycemic mice but had no significant effects in control mice. Our results demonstrate that hyperglycemia induces hyper-inflammatory activation of KCs during liver IR injury. Thus, hyperglycemia-induced CHOP over-activation inhibits IL-10-secreting M2-like macrophage polarization by liver-resident macrophages, thereby leading to excessive inflammation and the exacerbation of liver IR injury in diabetic/hyperglycemic hosts. This study provides novel mechanistic insight into macrophage inflammatory activation under hyperglycemic conditions during liver IR.
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Affiliation(s)
- Zhuqing Rao
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Jie Sun
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Xiongxiong Pan
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Ziyang Chen
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Heliang Sun
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Panpan Zhang
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Mei Gao
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Zhengnian Ding
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Cunming Liu
- Department of Anesthesiology, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
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18
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Kabala PA, Angiolilli C, Yeremenko N, Grabiec AM, Giovannone B, Pots D, Radstake TR, Baeten D, Reedquist KA. Endoplasmic reticulum stress cooperates with Toll-like receptor ligation in driving activation of rheumatoid arthritis fibroblast-like synoviocytes. Arthritis Res Ther 2017; 19:207. [PMID: 28923079 PMCID: PMC5604427 DOI: 10.1186/s13075-017-1386-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 07/10/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Endoplasmic reticulum (ER) stress has proinflammatory properties, and transgenic animal studies of rheumatoid arthritis (RA) indicate its relevance in the process of joint destruction. Because currently available studies are focused primarily on myeloid cells, we assessed how ER stress might affect the inflammatory responses of stromal cells in RA. METHODS ER stress was induced in RA fibroblast-like synoviocytes (FLS), dermal fibroblasts, and macrophages with thapsigargin or tunicamycin alone or in combination with Toll-like receptor (TLR) ligands, and gene expression and messenger RNA (mRNA) stability was measured by quantitative polymerase chain reaction. Cellular viability was measured using cell death enzyme-linked immunosorbent assays and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays, and signaling pathway activation was analyzed by immunoblotting. RESULTS No cytotoxicity was observed in FLS exposed to thapsigargin, despite significant induction of ER stress markers. Screening of 84 proinflammatory genes revealed minor changes in their expression (fold change 90th percentile range 2.8-8.3) by thapsigargin alone, but the vast majority were hyperinduced during combined stimulation with thapsigargin and TLR ligands (35% greater than fivefold vs lipopolysaccharide alone). The synergistic response could not be explained by quantitative effects on nuclear factor-κB and mitogen-activated protein kinase pathways alone, but it was dependent on increased mRNA stability. mRNA stabilization was similarly enhanced by ER stress in dermal fibroblasts but not in macrophages, correlating with minimal cooperative effects on gene induction in macrophages. CONCLUSIONS RA FLS are resistant to apoptosis induced by ER stress, but ER stress potentiates their activation by multiple TLR ligands. Interfering with downstream signaling pathway components of ER stress may be of therapeutic potential in the treatment of RA.
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Affiliation(s)
- Pawel A Kabala
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Clinical Immunology and Rheumatology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Chiara Angiolilli
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Clinical Immunology and Rheumatology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Nataliya Yeremenko
- Department of Clinical Immunology and Rheumatology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
| | - Aleksander M Grabiec
- Department of Clinical Immunology and Rheumatology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Barbara Giovannone
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Division of Internal Medicine and Dermatology, Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Desiree Pots
- Department of Clinical Immunology and Rheumatology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
| | - Timothy R Radstake
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Dominique Baeten
- Department of Clinical Immunology and Rheumatology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands.
- Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands.
- Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands.
| | - Kris A Reedquist
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
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19
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Grootjans J, Kaser A, Kaufman RJ, Blumberg RS. The unfolded protein response in immunity and inflammation. Nat Rev Immunol 2016; 16:469-84. [PMID: 27346803 DOI: 10.1038/nri.2016.62] [Citation(s) in RCA: 496] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The unfolded protein response (UPR) is a highly conserved pathway that allows the cell to manage endoplasmic reticulum (ER) stress that is imposed by the secretory demands associated with environmental forces. In this role, the UPR has increasingly been shown to have crucial functions in immunity and inflammation. In this Review, we discuss the importance of the UPR in the development, differentiation, function and survival of immune cells in meeting the needs of an immune response. In addition, we review current insights into how the UPR is involved in complex chronic inflammatory diseases and, through its role in immune regulation, antitumour responses.
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Affiliation(s)
- Joep Grootjans
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, Massachusetts 02115, USA
| | - Arthur Kaser
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Randal J Kaufman
- Degenerative Diseases Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, USA
| | - Richard S Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, Massachusetts 02115, USA
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20
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Scheraga RG, Abraham S, Niese KA, Southern BD, Grove LM, Hite RD, McDonald C, Hamilton TA, Olman MA. TRPV4 Mechanosensitive Ion Channel Regulates Lipopolysaccharide-Stimulated Macrophage Phagocytosis. THE JOURNAL OF IMMUNOLOGY 2015; 196:428-36. [PMID: 26597012 DOI: 10.4049/jimmunol.1501688] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 11/01/2015] [Indexed: 12/31/2022]
Abstract
Macrophage phagocytosis of particles and pathogens is an essential aspect of innate host defense. Phagocytic function requires cytoskeletal rearrangements that depend on the interaction between macrophage surface receptors, particulates/pathogens, and the extracellular matrix. In the present study we determine the role of a mechanosensitive ion channel, transient receptor potential vanilloid 4 (TRPV4), in integrating the LPS and matrix stiffness signals to control macrophage phenotypic change for host defense and resolution from lung injury. We demonstrate that active TRPV4 mediates LPS-stimulated murine macrophage phagocytosis of nonopsonized particles (Escherichia coli) in vitro and opsonized particles (IgG-coated latex beads) in vitro and in vivo in intact mice. Intriguingly, matrix stiffness in the range seen in inflamed or fibrotic lung is required to sensitize the TRPV4 channel to mediate the LPS-induced increment in macrophage phagocytosis. Furthermore, TRPV4 is required for the LPS induction of anti-inflammatory/proresolution cytokines. These findings suggest that signaling through TRPV4, triggered by changes in extracellular matrix stiffness, cooperates with LPS-induced signals to mediate macrophage phagocytic function and lung injury resolution. These mechanisms are likely to be important in regulating macrophage function in the context of pulmonary infection and fibrosis.
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Affiliation(s)
- Rachel G Scheraga
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195; and
| | - Susamma Abraham
- Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195; and
| | - Kathryn A Niese
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | - Brian D Southern
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195; and
| | - Lisa M Grove
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | - R Duncan Hite
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195; and
| | - Christine McDonald
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | | | - Mitchell A Olman
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195; and
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21
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Condamine T, Mastio J, Gabrilovich DI. Transcriptional regulation of myeloid-derived suppressor cells. J Leukoc Biol 2015; 98:913-22. [PMID: 26337512 DOI: 10.1189/jlb.4ri0515-204r] [Citation(s) in RCA: 250] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/21/2015] [Indexed: 12/14/2022] Open
Abstract
Myeloid-derived suppressor cells are a heterogeneous group of pathologically activated immature cells that play a major role in the negative regulation of the immune response in cancer, autoimmunity, many chronic infections, and inflammatory conditions, as well as in the regulation of tumor angiogenesis, tumor cell invasion, and metastases. Accumulation of myeloid-derived suppressor cells is governed by a network of transcriptional regulators that could be combined into 2 partially overlapping groups: factors promoting myelopoiesis and preventing differentiation of mature myeloid cells and factors promoting pathologic activation of myeloid-derived suppressor cells. In this review, we discuss the specific nature of these factors and their impact on myeloid-derived suppressor cell development.
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Affiliation(s)
| | - Jérôme Mastio
- The Wistar Institute, Philadelphia, Pennsylvania, USA
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22
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Datta S, Barrera N, Pavicic PG, Zhao C, Freeman M, Min B, Hamilton T. cEBP Homologous Protein Expression in Macrophages Regulates the Magnitude and Duration of IL-6 Expression and Dextran Sodium Sulfate Colitis. J Interferon Cytokine Res 2015; 35:785-94. [PMID: 26134251 DOI: 10.1089/jir.2014.0204] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Cellular stress enhances inflammatory cytokine gene expression by inducing cEBP homologous protein (CHOP). Engaging cell stress via thapsigargin induced CHOP and selectively prolonged lipopolysaccharide-stimulated interleukin-6 (IL-6) expression in bone marrow-derived macrophages from wild-type (WT) but not CHOP knockout (KO) mice. To determine the impact of this mechanism in vivo we employed dextran sodium sulfate (DSS)-induced colitis in irradiated mice reconstituted with bone marrow from WT or CHOP KO mice. WT recipients of CHOP KO bone marrow exhibited more rapid recovery from disease than did mice reconstituted with WT bone marrow as reflected in increased survival, reduced clinical scores, and colonic histopathology. No differences in mesenteric lymph node cell populations were observed between mice with WT or CHOP KO bone marrow during colitis. CD11b(+) macrophages infiltrating the lamina propria were, however, reduced in DSS-treated mice reconstituted with CHOP KO bone marrow. CHOP expression was observed within the infiltrating inflammatory CD11b(+) macrophages. Furthermore, IL-6 expression within the inflamed colon was significantly lower in mice with CHOP-deficient bone marrow. Our findings indicate that CHOP expression in myeloid cells plays an important role in determining the magnitude and duration of inflammatory response in vivo by modulating expression of proinflammatory cytokines such as IL-6 in infiltrating macrophages.
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Affiliation(s)
- Shyamasree Datta
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
| | - Natilibeth Barrera
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
| | - Paul G Pavicic
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
| | - Chenyang Zhao
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
| | - Michael Freeman
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
| | - Booki Min
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
| | - Thomas Hamilton
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation , Cleveland, Ohio
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23
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Abstract
Immune responses occur in the midst of a variety of cellular stresses that can severely perturb endoplasmic reticulum (ER) function. The unfolded protein response is a three-pronged signaling axis dedicated to preserving ER homeostasis. In this review, we highlight many important and emerging functional roles for ER stress in immunity, focusing on how the bidirectional cross talk between immunological processes and basic cell biology leads to pleiotropic signaling outcomes and enhanced sensitivity to inflammatory stimuli. We also discuss how dysregulated ER stress responses can provoke many diseases, including autoimmunity, firmly positioning the unfolded protein response as a major therapeutic target in human disease.
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Affiliation(s)
- Sarah E Bettigole
- Department of Medicine, Weill Cornell Medical College, New York, NY 10065; ,
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