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Tatomir A, Vlaicu S, Nguyen V, Luzina IG, Atamas SP, Drachenberg C, Papadimitriou J, Badea TC, Rus HG, Rus V. RGC-32 mediates proinflammatory and profibrotic pathways in immune-mediated kidney disease. Clin Immunol 2024; 265:110279. [PMID: 38878807 DOI: 10.1016/j.clim.2024.110279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 06/06/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024]
Abstract
Systemic lupus erythematosus is an autoimmune disease that results in immune-mediated damage to kidneys and other organs. We investigated the role of response gene to complement-32 (RGC-32), a proinflammatory and profibrotic mediator induced by TGFβ and C5b-9, in nephrotoxic nephritis (NTN), an experimental model that mimics human lupus nephritis. Proteinuria, loss of renal function and kidney histopathology were attenuated in RGC-32 KO NTN mice. RGC-32 KO NTN mice displayed downregulation of the CCL20/CCR6 and CXCL9/CXCR3 ligand/receptor pairs resulting in decreased renal recruitment of IL-17+ and IFNγ+ cells and subsequent decrease in the influx of innate immune cells. RGC-32 deficiency attenuated renal fibrosis as demonstrated by decreased deposition of collagen I, III and fibronectin. Thus, RGC-32 is a unique mediator shared by the Th17 and Th1 dependent proinflammatory and profibrotic pathways and a potential novel therapeutic target in the treatment of immune complex mediated glomerulonephritis such as lupus nephritis.
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Affiliation(s)
- Alexandru Tatomir
- Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, USA; Neurology Service, Veterans Administration Medical Health Care Center, Baltimore, MD, USA
| | - Sonia Vlaicu
- Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Internal Medicine, Medical Clinic nr. 1, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Vinh Nguyen
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Irina G Luzina
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sergei P Atamas
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | | | | | - Tudor C Badea
- Research and Development Institute, Faculty of Medicine, Transylvania University of Brasov, Brasov, Romania
| | - Horea G Rus
- Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, USA; Neurology Service, Veterans Administration Medical Health Care Center, Baltimore, MD, USA
| | - Violeta Rus
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.
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2
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Mareco EA, de la Serrana DG, de Paula TG, Zanella BTT, da Silva Duran BO, Salomão RAS, de Almeida Fantinatti BE, de Oliveira VHG, Dos Santos VB, Carvalho RF, Dal-Pai-Silva M. Transcriptomic insight into the hybridization mechanism of the Tambacu, a hybrid from Colossoma macropomum (Tambaqui) and Piaractus mesopotamicus (Pacu). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 45:101041. [PMID: 36442404 DOI: 10.1016/j.cbd.2022.101041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 11/02/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022]
Abstract
Interspecific hybrids are highly complex organisms, especially considering aspects related to the organization of genetic material. The diversity of possibilities created by the genetic combination between different species makes it difficult to establish a large-scale analysis methodology. An example of this complexity is Tambacu, an interspecific hybrid of Colossoma macropomum (Tambaqui) and Piaractus mesopotamicus (Pacu). Either genotype represents an essential role in South American aquaculture. However, despite this importance, the genetic information for these genotypes is still highly scarce in specialized databases. Using RNA-Seq analysis, we characterized the transcriptome of white muscle from Pacu, Tambaqui, and their interspecific hybrid (Tambacu). The sequencing process allowed us to obtain a significant number of reads (approximately 53 billion short reads). A total of annotated contigs were 37,285, 96,738, and 158,709 for Pacu, Tambaqui, and Tambacu. After that, we performed a comparative analysis of the transcriptome of the three genotypes, where we evaluated the differential expression (Tambacu vs Pacu = 11,156, and Tambacu vs Tambaqui = 876) profile of the transcript and the degree of similarity between the nucleotide sequences between the genotypes. We assessed the intensity and pattern of expression across genotypes using differential expression information. Clusterization analysis showed a closer relationship between Tambaqui and Tambacu. Furthermore, digital differential expression analysis selected some target genes related to essential cellular processes to evaluate and validate the expression through the RT-qPCR. The RT-qPCR analysis demonstrated significantly (p < 0.05) elevated expression of the mafbx, foxo1a, and rgcc genes in the hybrid compared to the parents. Likewise, we can observe genes significantly more expressed in Pacu (mtco1 and mylpfa) and mtco2 in Tambaqui. Our results showed that the phenotype presented by Tambacu might be associated with changes in the gene expression profile and not necessarily with an increase in gene variability. Thus, the molecular mechanisms underlying these "hybrid effects" may be related to additive and, in some cases, dominant regulatory interactions between parental alleles that act directly on gene regulation in the hybrid transcripts.
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Affiliation(s)
- Edson Assunção Mareco
- Environment and Regional Development Graduate Program, University of Western São Paulo, Presidente Prudente, São Paulo, Brazil; Biology Department, University of Western São Paulo, Presidente Prudente, São Paulo, Brazil.
| | - Daniel Garcia de la Serrana
- Cell Biology, Physiology, and Immunology Department, School of Biology, University of Barcelona, 643 08028 Barcelona, Catalonia, Spain
| | - Tassiana Gutierrez de Paula
- Department of Structural and Functional Biology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Bruna Tereza Thomazini Zanella
- Department of Structural and Functional Biology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Bruno Oliveira da Silva Duran
- Department of Structural and Functional Biology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | | | | | - Victor Hugo Garcia de Oliveira
- Environment and Regional Development Graduate Program, University of Western São Paulo, Presidente Prudente, São Paulo, Brazil
| | | | - Robson Francisco Carvalho
- Department of Structural and Functional Biology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Maeli Dal-Pai-Silva
- Department of Structural and Functional Biology, Institute of Bioscience of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
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3
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Diclofenac Disrupts the Circadian Clock and through Complex Cross-Talks Aggravates Immune-Mediated Liver Injury-A Repeated Dose Study in Minipigs for 28 Days. Int J Mol Sci 2023; 24:ijms24021445. [PMID: 36674967 PMCID: PMC9863319 DOI: 10.3390/ijms24021445] [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: 11/22/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/14/2023] Open
Abstract
Diclofenac effectively reduces pain and inflammation; however, its use is associated with hepato- and nephrotoxicity. To delineate mechanisms of injury, we investigated a clinically relevant (3 mg/kg) and high-dose (15 mg/kg) in minipigs for 4 weeks. Initially, serum biochemistries and blood-smears indicated an inflammatory response but returned to normal after 4 weeks of treatment. Notwithstanding, histopathology revealed drug-induced hepatitis, marked glycogen depletion, necrosis and steatosis. Strikingly, the genomic study revealed diclofenac to desynchronize the liver clock with manifest inductions of its components CLOCK, NPAS2 and BMAL1. The > 4-fold induced CRY1 expression underscored an activated core-loop, and the dose dependent > 60% reduction in PER2mRNA repressed the negative feedback loop; however, it exacerbated hepatotoxicity. Bioinformatics enabled the construction of gene-regulatory networks, and we linked the disruption of the liver-clock to impaired glycogenesis, lipid metabolism and the control of immune responses, as shown by the 3-, 6- and 8-fold induced expression of pro-inflammatory CXCL2, lysozyme and ß-defensin. Additionally, diclofenac treatment caused adrenocortical hypertrophy and thymic atrophy, and we evidenced induced glucocorticoid receptor (GR) activity by immunohistochemistry. Given that REV-ERB connects the circadian clock with hepatic GR, its > 80% repression alleviated immune responses as manifested by repressed expressions of CXCL9(90%), CCL8(60%) and RSAD2(70%). Together, we propose a circuitry, whereby diclofenac desynchronizes the liver clock in the control of the hepatic metabolism and immune response.
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4
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Tatomir A, Cuevas J, Badea TC, Muresanu DF, Rus V, Rus H. Role of RGC-32 in multiple sclerosis and neuroinflammation – few answers and many questions. Front Immunol 2022; 13:979414. [PMID: 36172382 PMCID: PMC9510783 DOI: 10.3389/fimmu.2022.979414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Recent advances in understanding the pathogenesis of multiple sclerosis (MS) have brought into the spotlight the major role played by reactive astrocytes in this condition. Response Gene to Complement (RGC)-32 is a gene induced by complement activation, growth factors, and cytokines, notably transforming growth factor β, that is involved in the modulation of processes such as angiogenesis, fibrosis, cell migration, and cell differentiation. Studies have uncovered the crucial role that RGC-32 plays in promoting the differentiation of Th17 cells, a subtype of CD4+ T lymphocytes with an important role in MS and its murine model, experimental autoimmune encephalomyelitis. The latest data have also shown that RGC-32 is involved in regulating major transcriptomic changes in astrocytes and in favoring the synthesis and secretion of extracellular matrix components, growth factors, axonal growth molecules, and pro-astrogliogenic molecules. These results suggest that RGC-32 plays a major role in driving reactive astrocytosis and the generation of astrocytes from radial glia precursors. In this review, we summarize recent advances in understanding how RGC-32 regulates the behavior of Th17 cells and astrocytes in neuroinflammation, providing insight into its role as a potential new biomarker and therapeutic target.
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Affiliation(s)
- Alexandru Tatomir
- Department of Neurology, University of Maryland, School of Medicine, Baltimore, MD, United States
- Department of Neurosciences, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Jacob Cuevas
- Department of Neurology, University of Maryland, School of Medicine, Baltimore, MD, United States
| | - Tudor C. Badea
- Research and Development Institute, Faculty of Medicine, Transylvania University of Brasov, Brasov, Romania
| | - Dafin F. Muresanu
- Department of Neurosciences, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Violeta Rus
- Department of Medicine, Division of Rheumatology and Clinical Immunology, University of Maryland, School of Medicine, Baltimore, MD, United States
| | - Horea Rus
- Department of Neurology, University of Maryland, School of Medicine, Baltimore, MD, United States
- Neurology Service, Baltimore Veterans Administration Medical Center, Baltimore, MD, United States
- *Correspondence: Horea Rus,
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5
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Kamata M, Tada Y. Dendritic Cells and Macrophages in the Pathogenesis of Psoriasis. Front Immunol 2022; 13:941071. [PMID: 35837394 PMCID: PMC9274091 DOI: 10.3389/fimmu.2022.941071] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/01/2022] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease characterized by scaly indurated erythema. This disease impairs patients’ quality of life enormously. Pathological findings demonstrate proliferation and abnormal differentiation of keratinocytes and massive infiltration of inflammatory immune cells. The pathogenesis of psoriasis is complicated. Among immune cells, dendritic cells play a pivotal role in the development of psoriasis in both the initiation and the maintenance phases. In addition, it has been indicated that macrophages contribute to the pathogenesis of psoriasis especially in the initiation phase, although studies on macrophages are limited. In this article, we review the roles of dendritic cells and macrophages in the pathogenesis of psoriasis.
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6
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Luzina IG, Rus V, Lockatell V, Courneya JP, Hampton BS, Fishelevich R, Misharin AV, Todd NW, Badea TC, Rus H, Atamas SP. Regulator of Cell Cycle Protein (RGCC/RGC-32) Protects against Pulmonary Fibrosis. Am J Respir Cell Mol Biol 2022; 66:146-157. [PMID: 34668840 PMCID: PMC8845131 DOI: 10.1165/rcmb.2021-0022oc] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Some previous studies in tissue fibrosis have suggested a profibrotic contribution from elevated expression of a protein termed either RGCC (regulator of cell cycle) or RGC-32 (response gene to complement 32 protein). Our analysis of public gene expression datasets, by contrast, revealed a consistent decrease in RGCC mRNA levels in association with pulmonary fibrosis. Consistent with this observation, we found that stimulating primary adult human lung fibroblasts with transforming growth factor (TGF)-β in cell cultures elevated collagen expression and simultaneously attenuated RGCC mRNA and protein levels. Moreover, overexpression of RGCC in cultured lung fibroblasts attenuated the stimulating effect of TGF-β on collagen levels. Similar to humans with pulmonary fibrosis, the levels of RGCC were also decreased in vivo in lung tissues of wild-type mice challenged with bleomycin in both acute and chronic models. Mice with constitutive RGCC gene deletion accumulated more collagen in their lungs in response to chronic bleomycin challenge than did wild-type mice. RNA-Seq analyses of lung fibroblasts revealed that RGCC overexpression alone had a modest transcriptomic effect, but in combination with TGF-β stimulation, induced notable transcriptomic changes that negated the effects of TGF-β, including on extracellular matrix-related genes. At the level of intracellular signaling, RGCC overexpression delayed early TGF-β-induced Smad2/3 phosphorylation, elevated the expression of total and phosphorylated antifibrotic mediator STAT1, and attenuated the expression of a profibrotic mediator STAT3. We conclude that RGCC plays a protective role in pulmonary fibrosis and that its decline permits collagen accumulation. Restoration of RGCC expression may have therapeutic potential in pulmonary fibrosis.
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Affiliation(s)
- Irina G. Luzina
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
| | - Violeta Rus
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
| | - Virginia Lockatell
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
| | - Jean-Paul Courneya
- Health Sciences and Human Services Library, University of Maryland–Baltimore, Baltimore, Maryland
| | | | - Rita Fishelevich
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
| | - Alexander V. Misharin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois
| | - Nevins W. Todd
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
| | - Tudor C. Badea
- Retinal Circuits Development and Genetics Unit, National Eye Institute, Bethesda, Maryland; and,Faculty of Medicine, Research and Development Institute, Transilvania University of Brașov, Brașov, Romania
| | - Horea Rus
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
| | - Sergei P. Atamas
- University of Maryland School of Medicine, Baltimore, Maryland;,Baltimore VA Medical Center, Baltimore, Maryland
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7
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Mycotoxin Zearalenone Attenuates Innate Immune Responses and Suppresses NLRP3 Inflammasome Activation in LPS-Activated Macrophages. Toxins (Basel) 2021; 13:toxins13090593. [PMID: 34564598 PMCID: PMC8473227 DOI: 10.3390/toxins13090593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/20/2021] [Accepted: 08/22/2021] [Indexed: 01/07/2023] Open
Abstract
Zearalenone (ZEA) is a mycotoxin that has several adverse effects on most mammalian species. However, the effects of ZEA on macrophage-mediated innate immunity during infection have not been examined. In the present study, bacterial lipopolysaccharides (LPS) were used to induce the activation of macrophages and evaluate the effects of ZEA on the inflammatory responses and inflammation-associated signaling pathways. The experimental results indicated that ZEA suppressed LPS-activated inflammatory responses by macrophages including attenuating the production of proinflammatory mediators (nitric oxide (NO) and prostaglandin E2 (PGE2)), decreased the secretion of proinflammatory cytokines (tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6), inhibited the activation of c-Jun amino-terminal kinase (JNK), p38 and nuclear factor-κB (NF-κB) signaling pathways, and repressed the nucleotide-binding and oligomerization domain (NOD)-, leucine-rich repeat (LRR)- and pyrin domain-containing protein 3 (NLRP3) inflammasome activation. These results indicated that mycotoxin ZEA attenuates macrophage-mediated innate immunity upon LPS stimulation, suggesting that the intake of mycotoxin ZEA-contaminated food might result in decreasing innate immunity, which has a higher risk of adverse effects during infection.
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8
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Lu Q, Barlow DE, Haridas D. Differential detection of immune cell activation by label-free radiation pressure force. Analyst 2021; 146:5150-5159. [PMID: 34286712 DOI: 10.1039/d1an01066b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Label-free radiation pressure force analysis using a microfluidic platform is applied to the differential detection of innate immune cell activation. Murine-derived peritoneal macrophages (IC-21) are used as a model system and the activation of IC-21 cells by lipopolysaccharide (LPS) and interferon gamma (IFN-γ) to M1 pro-inflammatory phenotype is confirmed by RNA gene sequencing and nitric oxide production. The mean cell size determined by radiation pressure force analysis increases slightly after the activation (4 to 6%) and the calculated percentage of population overlaps between the control and the activated group after 14 and 24 h stimulations are at 79% and 77%. Meanwhile the mean cell velocity decreases more significantly after the activation (14% to 15%) and the calculated percentage of population overlaps between the control and the activated group after 14 and 24 h stimulations are only at 14% and 13%. The results demonstrate that the majority of the activated cells acquire a lower velocity than the cells from the control group without changes in cell size. For comparison label-free flow cytometry analysis of living IC-21 cells under the same stimulation conditions are performed and the results show population shifts towards larger values in both forward scatter and side scatter, but the calculated percentage of population overlaps in all case are significant (70% to 83%). Cell images obtained during radiation pressure force analysis by a CCD camera, and by optical microscopy and atomic force microscopy (AFM) reveal correlations between the cell activation by LPS/IFN-γ, the increase in cell complexity and surface roughness, and enhanced back scattered light by the activated cells. The unique relationship predicted by Mie's theory between the radiation pressure force exerted on the cell and the angular distribution of the scattered light by the cell which is influenced by its size, complexity, and surface conditions, endows the cell velocity based measurement by radiation pressure force analysis with high sensitivity in differentiating immune cell activation.
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Affiliation(s)
- Qin Lu
- Naval Research Laboratory, Chemistry Division, 4555 Overlook Ave., S.W. Washington, D.C. 20375, USA.
| | - Daniel E Barlow
- Naval Research Laboratory, Chemistry Division, 4555 Overlook Ave., S.W. Washington, D.C. 20375, USA.
| | - Dhanya Haridas
- Naval Research Laboratory, Chemistry Division, 4555 Overlook Ave., S.W. Washington, D.C. 20375, USA.
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9
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Guo Z, Chen M, Chao Y, Cai C, Liu L, Zhao L, Li L, Bai QR, Xu Y, Niu W, Shi L, Bi Y, Ren D, Yuan F, Shi S, Zeng Q, Han K, Shi Y, Bian S, He G. RGCC balances self-renewal and neuronal differentiation of neural stem cells in the developing mammalian neocortex. EMBO Rep 2021; 22:e51781. [PMID: 34323349 DOI: 10.15252/embr.202051781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 11/09/2022] Open
Abstract
During neocortical development, neural stem cells (NSCs) divide symmetrically to self-renew at the early stage and then divide asymmetrically to generate post-mitotic neurons. The molecular mechanisms regulating the balance between NSC self-renewal and neurogenesis are not fully understood. Using mouse in utero electroporation (IUE) technique and in vitro human NSC differentiation models including cerebral organoids (hCOs), we show here that regulator of cell cycle (RGCC) modulates NSC self-renewal and neuronal differentiation by affecting cell cycle regulation and spindle orientation. RGCC deficiency hampers normal cell cycle process and dysregulates the mitotic spindle, thus driving more cells to divide asymmetrically. These modulations diminish the NSC population and cause NSC pre-differentiation that eventually leads to brain developmental malformation in hCOs. We further show that RGCC might regulate NSC spindle orientation by affecting the organization of centrosome and microtubules. Our results demonstrate that RGCC is essential to maintain the NSC pool during cortical development and suggest that RGCC defects could have etiological roles in human brain malformations.
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Affiliation(s)
- Zhenming Guo
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Mengxia Chen
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Yiming Chao
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Chunhai Cai
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Liangjie Liu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Li Zhao
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Linbo Li
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Qing-Ran Bai
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Orthopaedic Department of Tongji Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Yanxin Xu
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Weibo Niu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Shi
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Bi
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Decheng Ren
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Fan Yuan
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Shuyue Shi
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Qian Zeng
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Ke Han
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Shi
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| | - Shan Bian
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Guang He
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, and Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
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10
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Protective Effect of Piplartine against LPS-Induced Sepsis through Attenuating the MAPKs/NF-κB Signaling Pathway and NLRP3 Inflammasome Activation. Pharmaceuticals (Basel) 2021; 14:ph14060588. [PMID: 34207356 PMCID: PMC8234963 DOI: 10.3390/ph14060588] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 12/24/2022] Open
Abstract
Piplartine (or Piperlongumine) is a natural alkaloid isolated from Piper longum L., which has been proposed to exhibit various biological properties such as anti-inflammatory effects; however, the effect of piplartine on sepsis has not been examined. This study was performed to examine the anti-inflammatory activities of piplartine in vitro, ex vivo and in vivo using murine J774A.1 macrophage cell line, peritoneal macrophages, bone marrow-derived macrophages and an animal sepsis model. The results demonstrated that piplartine suppresses iNOS and COX-2 expression, reduces PGE2, TNF-α and IL-6 production, decreases the phosphorylation of MAPKs and NF-κB and attenuates NF-κB activity by LPS-activated macrophages. Piplartine also inhibits IL-1β production and suppresses NLRP3 inflammasome activation by LPS/ATP- and LPS/nigericin-activated macrophages. Moreover, piplartine reduces the production of nitric oxide (NO) and TNF-α, IL-6 and IL-1β, decreases LPS-induced tissue damage, attenuates infiltration of inflammatory cells and enhances the survival rate. Collectively, these results demonstrate piplartine exhibits anti-inflammatory activities in LPS-induced inflammation and sepsis and suggest that piplartine might have benefits for sepsis treatment.
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11
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Su CC, Wang SC, Chen IC, Chiu FY, Liu PL, Huang CH, Huang KH, Fang SH, Cheng WC, Huang SP, Yeh HC, Liu CC, Lee PY, Huang MY, Li CY. Zerumbone Suppresses the LPS-Induced Inflammatory Response and Represses Activation of the NLRP3 Inflammasome in Macrophages. Front Pharmacol 2021; 12:652860. [PMID: 34045963 PMCID: PMC8144706 DOI: 10.3389/fphar.2021.652860] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/16/2021] [Indexed: 12/19/2022] Open
Abstract
Zerumbone is a natural product isolated from the pinecone or shampoo ginger, Zingiber zerumbet (L.) Smith, which has a wide range of pharmacological activities, including anti-inflammatory effects. However, the effects of zerumbone on activation of the NLRP3 inflammasome in macrophages have not been examined. This study aimed to examine the effects of zerumbone on LPS-induced inflammatory responses and NLRP3 inflammasome activation using murine J774A.1 cells, murine peritoneal macrophages, and murine bone marrow-derived macrophages. Cells were treated with zerumbone following LPS or LPS/ATP treatment. Production of nitric oxide (NO) was measured by Griess reagent assay. The levels of IL-6, TNF-α, and IL-1β secretion were analyzed by ELISA. Western blotting analysis was performed to determine the expression of inducible NO synthase (iNOS), COX-2, MAPKs, and NLRP3 inflammasome-associated proteins. The activity of NF-κB was determined by a promoter reporter assay. The assembly of NLRP3 was examined by immunofluorescence staining and observed by confocal laser microscopy. Our experimental results indicated that zerumbone inhibited the production of NO, PGE2 and IL-6, suppressed the expression of iNOS and COX-2, repressed the phosphorylation of ERK, and decreased the activity of NF-κB in LPS-activated J774A.1 cells. In addition, zerumbone suppressed the production of IL-1β and inhibited the activity of NLRP3 inflammasome in LPS/ATP- and LPS/nigericin-activated J774A.1 cells. On the other hand, we also found that zerumbone repressed the production of NO and proinflammatory cytokines in LPS-activated murine peritoneal macrophages and bone marrow-derived macrophages. In conclusion, our experimental results demonstrate that zerumbone effectively attenuates the LPS-induced inflammatory response in macrophages both in vitro and ex vivo by suppressing the activation of the ERK-MAPK and NF-κB signaling pathways as well as blocking the activation of the NLRP3 inflammasome. These results imply that zerumbone may be beneficial for treating sepsis and inflammasome-related diseases.
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Affiliation(s)
- Chia-Cheng Su
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Urology, Department of Surgery, Chi-Mei Medical Center, Tainan, Taiwan.,Department of Senior Citizen Service Management, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - Shu-Chi Wang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - I-Chen Chen
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Pediatrics, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fang-Yen Chiu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Po-Len Liu
- Department of Respiratory Therapy, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chi-Han Huang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kuan-Hua Huang
- Division of Urology, Department of Surgery, Chi-Mei Medical Center, Tainan, Taiwan
| | - Shih-Hua Fang
- Institute of Athletics, National Taiwan University of Sport, Taichung, Taiwan
| | - Wei-Chung Cheng
- Graduate Institute of Biomedical Science, Research Center for Cancer Biology, China Medical University, Taichung, Taiwan
| | - Shu-Pin Huang
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsin-Chih Yeh
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Ching-Chih Liu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Ophthalmology, Chi Mei Medical Center, Taichung, Taiwan
| | - Po-Yen Lee
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Ophthalmology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Yii Huang
- Department of Radiation Oncology, Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chia-Yang Li
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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12
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Ran R, Cai D, King SD, Que X, Bath JM, Chen SY. Surfactant Protein A, a Novel Regulator for Smooth Muscle Phenotypic Modulation and Vascular Remodeling-Brief Report. Arterioscler Thromb Vasc Biol 2021; 41:808-814. [PMID: 33267655 PMCID: PMC8105259 DOI: 10.1161/atvbaha.120.314622] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE The objective of this study is to determine the role of SPA (surfactant protein A) in vascular smooth muscle cell (SMC) phenotypic modulation and vascular remodeling. Approach and Results: PDGF-BB (Platelet-derived growth factor-BB) and serum induced SPA expression while downregulating SMC marker gene expression in SMCs. SPA deficiency increased the contractile protein expression. Mechanistically, SPA deficiency enhanced the expression of myocardin and TGF (transforming growth factor)-β, the key regulators for contractile SMC phenotype. In vivo, SPA was induced in medial and neointimal SMCs following mechanical injury in both rat and mouse carotid arteries. SPA knockout in mice dramatically attenuated the wire injury-induced intimal hyperplasia while restoring SMC contractile protein expression in medial SMCs. These data indicate that SPA plays an important role in SMC phenotype modulation and vascular remodeling in vivo. CONCLUSIONS SPA is a novel protein factor modulating SMC phenotype. Blocking the abnormal elevation of SPA may be a potential strategy to inhibit the development of proliferative vascular diseases.
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MESH Headings
- Animals
- Becaplermin/pharmacology
- Carotid Arteries/drug effects
- Carotid Arteries/metabolism
- Carotid Arteries/pathology
- Carotid Artery Injuries/genetics
- Carotid Artery Injuries/metabolism
- Carotid Artery Injuries/pathology
- Cells, Cultured
- Disease Models, Animal
- Hyperplasia
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Neointima
- Nuclear Proteins/metabolism
- Phenotype
- Pulmonary Surfactant-Associated Protein A/genetics
- Pulmonary Surfactant-Associated Protein A/metabolism
- Rats, Sprague-Dawley
- Signal Transduction
- Trans-Activators/metabolism
- Transforming Growth Factor beta1/metabolism
- Vascular Remodeling/drug effects
- Mice
- Rats
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Affiliation(s)
- Ran Ran
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA
| | - Dunpeng Cai
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- Department of Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO
| | - Skylar D. King
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
| | - Xingyi Que
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
| | - Jonathan M. Bath
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- The Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO 65212
| | - Shi-You Chen
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA
- Department of Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO
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13
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Ni FB, Lin Z, Fan XH, Shi KQ, Ao JY, Wang XD, Chen RC. A novel genomic-clinicopathologic nomogram to improve prognosis prediction of hepatocellular carcinoma. Clin Chim Acta 2020; 504:88-97. [PMID: 32032609 DOI: 10.1016/j.cca.2020.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 01/14/2020] [Accepted: 02/03/2020] [Indexed: 12/12/2022]
Abstract
There is a lack of precise and clinical accessible model to predict the prognosis of hepatocellular carcinoma (HCC) in clinic practice currently. Here, an inclusive nomogram was developed by integrating genomic markers and clinicopathologic factors for predicting the outcome of patients with HCC. A total of 365 samples of HCC were obtained from the Cancer Genome Atlas (TCGA) database. The LASSO analysis was carried out to identify HCC-related mRNAs, and the multivariate Cox regression analysis was used to construct a genomic-clinicopathologic nomogram. As results, 9 mRNAs were finally identified as prognostic indicators, including RGCC, CDH15, XRN2, RAB3IL1, THEM4, PIF1, MANBA, FKTN and GABARAPL1, and used to establish a 9-mRNA classifier. Additionally, an inclusive nomogram was built up by combining the 9-mRNA classifier (P < 0.001) and clinicopathologic factors including age (P = 0.006) and metastasis (P < 0.001) to predict the mortality of HCC patients. Time-dependent receiver operating characteristic, index of concordance and calibration analyses indicated favorable accuracy of the model. Decision curve analysis suggested that appropriate intervention according to the established nomogram will bring net benefit when threshold probability was above 25%. The genomic-clinicopathologic model could be a reliable tool for predicting the mortality, helping determining the individualized treatment and probably improving HCC survival.
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Affiliation(s)
- Fu-Biao Ni
- The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, Wenzhou, Zhejiang 325000, China
| | - Zhuo Lin
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, Hepatology Institute of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Xu-Hui Fan
- First School of Clinical Medicine, Wenzhou Medical University, Zhejiang, China
| | - Ke-Qing Shi
- Precision Medical Center Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jian-Yang Ao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiao-Dong Wang
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, Hepatology Institute of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China.
| | - Rui-Cong Chen
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, Hepatology Institute of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China.
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14
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Response gene to complement 32 expression in macrophages augments paracrine stimulation-mediated colon cancer progression. Cell Death Dis 2019; 10:776. [PMID: 31601783 PMCID: PMC6786990 DOI: 10.1038/s41419-019-2006-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/15/2019] [Accepted: 09/24/2019] [Indexed: 01/26/2023]
Abstract
M2-polarized tumor associated macrophages (TAMs) play an important role in tumor progression. It has been reported that response gene to complement 32 (RGC-32) promotes M2 macrophage polarization. However, whether RGC-32 expression in macrophages could play a potential role in tumor progression remain unclear. Here we identified that increasing RGC-32 expression in colon cancer and tumor associated macrophages was positively correlated with cancer progression. In vitro studies confirmed that colon cancer cells upregulated RGC-32 expression of macrophages via secreting TGF-β1. RGC-32 expression promoted macrophage migration. In addition, stimulation of HCT-116 cells with the condition mediums of RGC-32-silienced or over-expressed macrophages affected tumor cell colony formation and migration via altered COX-2 expression. In an animal model, macrophages with RGC-32 knockdown significantly decreased the expression of COX-2 and Ki67 in the xenografts, and partly inhibited tumor growth. Together, our results provide the evidences for a critical role of TGF-β1/RGC-32 pathway in TAMs and colon cancer cells during tumor progression.
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15
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Tang JM, Shi N, Dong K, Brown SA, Coleman AE, Boegehold MA, Chen SY. Response Gene to Complement 32 Maintains Blood Pressure Homeostasis by Regulating α-Adrenergic Receptor Expression. Circ Res 2019; 123:1080-1090. [PMID: 30355157 DOI: 10.1161/circresaha.118.313266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
RATIONALE Hypertension prevalence is much higher among children and adolescents with low birth weight and greater postnatal weight gain than in individuals with normal birth weight. However, the cause and molecular mechanisms underlying this complication remain largely unknown. Our previous studies have shown that RGC-32 (response gene to complement 32)-deficient (RGC-32-/-) mice are born significantly smaller but grow faster than their WT (wild type) controls, which allows adult RGC-32-/- mice to attain body weights similar to those of control mice. OBJECTIVE The objective of this study is to determine whether RGC-32-/- mice develop hypertension, and if so, to elucidate the underlying mechanisms. METHODS AND RESULTS By using a radiotelemetry system, we found that RGC-32-/- mice exhibit higher mean arterial pressure than WT mice (101±4 versus 119±5 mm Hg), which enabled us to use RGC-32-/- mice to study the mechanisms underlying low birth weight-related hypertension. The increased blood pressure in RGC-32-/- mice was associated with increased vascular tone and decreased distensibility of small resistance arteries. The increased vascular tone was because of an increase in the relative contribution of sympathetic versus parasympathetic activity and was linked to increased expression of AT1R (angiotensin II type I receptor) and α1-AdR (α1-adrenergic receptor) in arterial smooth muscles. Mechanistically, RGC-32 regulated AT1R gene transcription by interacting with Sp1 (specificity protein 1) transcription factor and further blocking its binding to the AT1R promoter, leading to suppression of AT1R expression. The attenuation of AT1R leads to reduction in α1-AdR expression, which was critical for the balance of sympathetic versus parasympathetic control of vascular tone. Of importance, downregulation of RGC-32 in arterial smooth muscles was also associated with low birth weight and hypertension in humans. CONCLUSIONS Our results indicate that RGC-32 is a novel protein factor vital for maintaining blood pressure homeostasis, especially in individuals with low birth weight.
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Affiliation(s)
- Jun-Ming Tang
- From the Department of Physiology and Pharmacology (J.-M.T., N.S., K.D., S.A.B., M.A.B., S.-Y.C.), University of Georgia, Athens.,Institute of Clinical Medicine (J.-M.T.), Renmin Hospital, Hubei University of Medicine, Shiyan, China.,Department of Cardiology (J.-M.T.), Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Ning Shi
- From the Department of Physiology and Pharmacology (J.-M.T., N.S., K.D., S.A.B., M.A.B., S.-Y.C.), University of Georgia, Athens
| | - Kun Dong
- From the Department of Physiology and Pharmacology (J.-M.T., N.S., K.D., S.A.B., M.A.B., S.-Y.C.), University of Georgia, Athens
| | - Scott A Brown
- From the Department of Physiology and Pharmacology (J.-M.T., N.S., K.D., S.A.B., M.A.B., S.-Y.C.), University of Georgia, Athens
| | - Amanda E Coleman
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine (A.E.C.), University of Georgia, Athens
| | - Matthew A Boegehold
- From the Department of Physiology and Pharmacology (J.-M.T., N.S., K.D., S.A.B., M.A.B., S.-Y.C.), University of Georgia, Athens
| | - Shi-You Chen
- From the Department of Physiology and Pharmacology (J.-M.T., N.S., K.D., S.A.B., M.A.B., S.-Y.C.), University of Georgia, Athens
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16
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Brocard M, Khasnis S, Wood CD, Shannon-Lowe C, West MJ. Pumilio directs deadenylation-associated translational repression of the cyclin-dependent kinase 1 activator RGC-32. Nucleic Acids Res 2019; 46:3707-3725. [PMID: 29385536 PMCID: PMC5909466 DOI: 10.1093/nar/gky038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 01/22/2018] [Indexed: 12/11/2022] Open
Abstract
Response gene to complement-32 (RGC-32) activates cyclin-dependent kinase 1, regulates the cell cycle and is deregulated in many human tumours. We previously showed that RGC-32 expression is upregulated by the cancer-associated Epstein-Barr virus (EBV) in latently infected B cells through the relief of translational repression. We now show that EBV infection of naïve primary B cells also induces RGC-32 protein translation. In EBV-immortalised cell lines, we found that RGC-32 depletion resulted in cell death, indicating a key role in B cell survival. Studying RGC-32 translational control in EBV-infected cells, we found that the RGC-32 3′untranslated region (3′UTR) mediates translational repression. Repression was dependent on a single Pumilio binding element (PBE) adjacent to the polyadenylation signal. Mutation of this PBE did not affect mRNA cleavage, but resulted in increased polyA tail length. Consistent with Pumilio-dependent recruitment of deadenylases, we found that depletion of Pumilio in EBV-infected cells increased RGC-32 protein expression and polyA tail length. The extent of Pumilio binding to the endogenous RGC-32 mRNA in EBV-infected cell lines also correlated with RGC-32 protein expression. Our data demonstrate the importance of RGC-32 for the survival of EBV-immortalised B cells and identify Pumilio as a key regulator of RGC-32 translation.
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Affiliation(s)
- Michèle Brocard
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK
| | - Sarika Khasnis
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK
| | - C David Wood
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK
| | - Claire Shannon-Lowe
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Michelle J West
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK
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17
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Cui XB, Luan JN, Dong K, Chen S, Wang Y, Watford WT, Chen SY. Response by Cui et al to Letter Regarding Article, "RGC-32 (Response Gene to Complement 32) Deficiency Protects Endothelial Cells From Inflammation and Attenuates Atherosclerosis". Arterioscler Thromb Vasc Biol 2019; 38:e97-e98. [PMID: 29793994 DOI: 10.1161/atvbaha.118.311146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xiao-Bing Cui
- Department of Physiology and Pharmacology, University of Georgia, Athens
| | - Jun-Na Luan
- Department of Physiology and Pharmacology, University of Georgia, Athens
| | - Kun Dong
- Department of Physiology and Pharmacology, University of Georgia, Athens
| | - Sisi Chen
- Department of Physiology and Pharmacology, University of Georgia, Athens
| | - Yongyi Wang
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China
| | - Wendy T Watford
- Department of Infectious Diseases, University of Georgia, Athens
| | - Shi-You Chen
- Department of Physiology and Pharmacology, University of Georgia, Athens
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18
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Vlaicu SI, Tatomir A, Anselmo F, Boodhoo D, Chira R, Rus V, Rus H. RGC-32 and diseases: the first 20 years. Immunol Res 2019; 67:267-279. [DOI: 10.1007/s12026-019-09080-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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19
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Kim HJ, Jang J, Lee EH, Jung S, Roh JY, Jung Y. Decreased expression of response gene to complement 32 in psoriasis and its association with reduced M2 macrophage polarization. J Dermatol 2019; 46:166-168. [DOI: 10.1111/1346-8138.14733] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 11/10/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Hee Joo Kim
- Department of Dermatology; Gachon Gil Medical Center; School of Medicine; Gachon University; Incheon Korea
| | - Jinsun Jang
- Department of Dermatology; Gachon Gil Medical Center; School of Medicine; Gachon University; Incheon Korea
- Department of Microbiology; School of Medicine; Gachon University; Incheon Korea
| | - Eun-Hui Lee
- Department of Microbiology; School of Medicine; Gachon University; Incheon Korea
| | - Sungwon Jung
- Department of Genome Medicine and Science; School of Medicine; Gachon University; Incheon Korea
- Gachon Institute of Genome Medicine and Science; Gachon Gil Medical Center; Incheon Korea
| | - Joo Young Roh
- Department of Dermatology; Gachon Gil Medical Center; School of Medicine; Gachon University; Incheon Korea
| | - YunJae Jung
- Department of Microbiology; School of Medicine; Gachon University; Incheon Korea
- Gachon Advanced Institute for Health Science and Technology; Gachon University; Incheon Korea
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20
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Cui XB, Chen SY. Response Gene to Complement 32 in Vascular Diseases. Front Cardiovasc Med 2018; 5:128. [PMID: 30280101 PMCID: PMC6153333 DOI: 10.3389/fcvm.2018.00128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/28/2018] [Indexed: 11/16/2022] Open
Abstract
Response gene to complement 32 (RGC32) is a protein that was identified in rat oligodendrocytes after complement activation. It is expressed in most of the organs and tissues, such as brain, placenta, heart, and the liver. Functionally, RGC32 is involved in various physiological and pathological processes, including cell proliferation, differentiation, fibrosis, metabolic disease, and cancer. Emerging evidences support the roles of RGC32 in vascular diseases. RGC32 promotes injury-induced vascular neointima formation by mediating smooth muscle cell (SMC) proliferation and migration. Moreover, RGC32 mediates endothelial cell activation and facilitates atherosclerosis development. Its involvement in macrophage phagocytosis and activation as well as T-lymphocyte cell cycle activation also suggests that RGC32 is important for the development and progression of inflammatory vascular diseases. In this mini-review, we provide an overview on the roles of RGC32 in regulating functions of SMCs, endothelial cells, and immune cells, and discuss their contributions to vascular diseases.
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Affiliation(s)
- Xiao-Bing Cui
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA, United States
| | - Shi-You Chen
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA, United States
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21
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Rus H, Talpos-Caia A, Tatomir A, Vlaicu SI. Letter by Rus et al Regarding Article, "RGC-32 (Response Gene to Complement 32) Deficiency Protects Endothelial Cells From Inflammation and Attenuates Atherosclerosis". Arterioscler Thromb Vasc Biol 2018; 38:e96. [PMID: 29793993 DOI: 10.1161/atvbaha.118.311140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Horea Rus
- Department of Neurology, University of Maryland School of Medicine, Baltimore
| | | | - Alexandru Tatomir
- Department of Neurology, University of Maryland School of Medicine, Baltimore
| | - Sonia I Vlaicu
- Department of Neurology, University of Maryland School of Medicine, Baltimore
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22
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Sun C, Chen SY. RGC32 Promotes Bleomycin-Induced Systemic Sclerosis in a Murine Disease Model by Modulating Classically Activated Macrophage Function. THE JOURNAL OF IMMUNOLOGY 2018; 200:2777-2785. [PMID: 29507108 DOI: 10.4049/jimmunol.1701542] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/10/2018] [Indexed: 12/20/2022]
Abstract
Systemic sclerosis (SSc) is a multisystem autoimmune disorder that is characterized by inflammation and fibrosis in the skin and internal organs. Previous studies indicate that inflammatory cells and cytokines play essential roles in the pathogenesis of SSc; however, the mechanisms that underlie the inflammation-driven development of SSc are not fully understood. In this study, we show that response gene to complement 32 (RGC32) is abundantly expressed in mouse macrophages in the early stage of bleomycin-induced SSc. Importantly, RGC32 is required to induce the inflammatory response during the onset of SSc, because RGC32 deficiency in mice significantly ameliorates skin and lung sclerosis and inhibits the expression of inflammatory mediators inducible NO synthase (iNOS) and IL-1β in macrophages. RGC32 appears to be a novel regulator for the differentiation of classically activated macrophages (M1 macrophages). IFN-γ and LPS stimulation induces RGC32 expression in primary peritoneal macrophages and bone marrow-derived macrophages. RGC32 deficiency impairs the polarization of M1 macrophages and attenuates iNOS and IL-1β production. Mechanistically, RGC32 interacts with NF-κB proteins and promotes iNOS and IL-1β expression by binding to their promoters. Collectively, our data reveal that RGC32 promotes the onset of SSc by regulating the inflammatory response of M1 macrophages, and it may serve as a promising therapeutic target for treating SSc.
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Affiliation(s)
- Chenming Sun
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
| | - Shi-You Chen
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
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23
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New insights into the roles of RGC-32. Cell Mol Immunol 2018; 15:803-804. [PMID: 29503443 DOI: 10.1038/cmi.2017.154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 11/16/2017] [Indexed: 12/16/2022] Open
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24
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Cui XB, Luan JN, Dong K, Chen S, Wang Y, Watford WT, Chen SY. RGC-32 (Response Gene to Complement 32) Deficiency Protects Endothelial Cells From Inflammation and Attenuates Atherosclerosis. Arterioscler Thromb Vasc Biol 2018; 38:e36-e47. [PMID: 29449334 DOI: 10.1161/atvbaha.117.310656] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 02/05/2018] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The objective of this study is to determine the role and underlying mechanisms of RGC-32 (response gene to complement 32 protein) in atherogenesis. APPROACH AND RESULTS RGC-32 was mainly expressed in endothelial cells of atherosclerotic lesions in both ApoE-/- (apolipoprotein E deficient) mice and human patients. Rgc-32 deficiency (Rgc32-/-) attenuated the high-fat diet-induced and spontaneously developed atherosclerotic lesions in ApoE-/- mice without affecting serum cholesterol concentration. Rgc32-/- seemed to decrease the macrophage content without altering collagen and smooth muscle contents or lesional macrophage proliferation in the lesions. Transplantation of WT (wild type) mouse bone marrow to lethally irradiated Rgc32-/- mice did not alter Rgc32-/--caused reduction of lesion formation and macrophage accumulation, suggesting that RGC-32 in resident vascular cells, but not the macrophages, plays a critical role in the atherogenesis. Of importance, Rgc32-/- decreased the expression of ICAM-1 (intercellular adhesion molecule-1) and VCAM-1 (vascular cell adhesion molecule-1) in endothelial cells both in vivo and in vitro, resulting in a decrease in TNF-α (tumor necrosis factor-α)-induced monocyte-endothelial cell interaction. Mechanistically, RGC-32 mediated the ICAM-1 and VCAM-1 expression, at least partially, through NF (nuclear factor)-κB signaling pathway. RGC-32 directly interacted with NF-κB and facilitated its nuclear translocation and enhanced TNF-α-induced NF-κB binding to ICAM-1 and VCAM-1 promoters. CONCLUSIONS RGC-32 mediates atherogenesis by facilitating monocyte-endothelial cell interaction via the induction of endothelial ICAM-1 and VCAM-1 expression, at least partially, through NF-κB signaling pathway.
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Affiliation(s)
- Xiao-Bing Cui
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.)
| | - Jun-Na Luan
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.)
| | - Kun Dong
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.)
| | - Sisi Chen
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.)
| | - Yongyi Wang
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.)
| | - Wendy T Watford
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.)
| | - Shi-You Chen
- From the Department of Physiology and Pharmacology (X.-B.C., J.-N.L., K.D., S.C., S.-Y.C.) and Department of Infectious Diseases (W.T.W.), University of Georgia, Athens; Department of Endocrinology, Renmin Hospital, Hubei University of Medicine, Shiyan, China (S.C., S.-Y.C.); and Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, China (Y.W.).
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Rus V, Nguyen V, Tatomir A, Lees JR, Mekala AP, Boodhoo D, Tegla CA, Luzina IG, Antony PA, Cudrici CD, Badea TC, Rus HG. RGC-32 Promotes Th17 Cell Differentiation and Enhances Experimental Autoimmune Encephalomyelitis. THE JOURNAL OF IMMUNOLOGY 2017; 198:3869-3877. [PMID: 28356385 DOI: 10.4049/jimmunol.1602158] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/09/2017] [Indexed: 01/08/2023]
Abstract
Th17 cells play a critical role in autoimmune diseases, including multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis. Response gene to complement (RGC)-32 is a cell cycle regulator and a downstream target of TGF-β that mediates its profibrotic activity. In this study, we report that RGC-32 is preferentially upregulated during Th17 cell differentiation. RGC-32-/- mice have normal Th1, Th2, and regulatory T cell differentiation but show defective Th17 differentiation in vitro. The impaired Th17 differentiation is associated with defects in IFN regulatory factor 4, B cell-activating transcription factor, retinoic acid-related orphan receptor γt, and SMAD2 activation. In vivo, RGC-32-/- mice display an attenuated experimental autoimmune encephalomyelitis phenotype accompanied by decreased CNS inflammation and reduced frequency of IL-17- and GM-CSF-producing CD4+ T cells. Collectively, our results identify RGC-32 as a novel regulator of Th17 cell differentiation in vitro and in vivo and suggest that RGC-32 is a potential therapeutic target in multiple sclerosis and other Th17-mediated autoimmune diseases.
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Affiliation(s)
- Violeta Rus
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201; .,Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201
| | - Vinh Nguyen
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201.,Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201
| | - Alexandru Tatomir
- Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201.,Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Jason R Lees
- Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Armugam P Mekala
- Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201.,Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Dallas Boodhoo
- Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201.,Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Cosmin A Tegla
- Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201.,Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Irina G Luzina
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201.,Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201
| | - Paul A Antony
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Cornelia D Cudrici
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892; and
| | - Tudor C Badea
- Retinal Circuit Development and Genetics Unit, Neurobiology Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, MD 20892
| | - Horea G Rus
- Research Service, Veteran Affairs Medical Center, Baltimore, MD 21201.,Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201
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Yang Y, Kong W, Xia Z, Xiao L, Wang S. Regulation mechanism of PDK1 on macrophage metabolism and function. Cell Biochem Funct 2016; 34:546-553. [DOI: 10.1002/cbf.3235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 09/11/2016] [Accepted: 10/11/2016] [Indexed: 01/21/2023]
Affiliation(s)
- Yueqin Yang
- Exercise Intervention and Health Promotion Hubei Province Synergy Innovation Center; Wuhan Sports University; Wuhan Hubei China
| | - Weiwei Kong
- Graduate School; Wuhan Sports University; Wuhan Hubei China
| | - Zhi Xia
- Exercise Physiology and Biochemical Laboratory, College of Physical Education; Jinggangshan University; Ji'an Jiangxi China
| | - Lin Xiao
- School of Physical Education and Health Science; Zhaoqing University; Zhaoqing Guangdong China
| | - Song Wang
- Exercise Intervention and Health Promotion Hubei Province Synergy Innovation Center; Wuhan Sports University; Wuhan Hubei China
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27
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Counts SE, Mufson EJ. Regulator of Cell Cycle (RGCC) Expression During the Progression of Alzheimer's Disease. Cell Transplant 2016; 26:693-702. [PMID: 27938491 DOI: 10.3727/096368916x694184] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Unscheduled cell cycle reentry of postmitotic neurons has been described in cases of mild cognitive impairment (MCI) and Alzheimer's disease (AD) and may form a basis for selective neuronal vulnerability during disease progression. In this regard, the multifunctional protein regulator of cell cycle (RGCC) has been implicated in driving G1/S and G2/M phase transitions through its interactions with cdc/cyclin-dependent kinase 1 (cdk1) and is induced by p53, which mediates apoptosis in neurons. We tested whether RGCC levels were dysregulated in frontal cortex samples obtained postmortem from subjects who died with a clinical diagnosis of no cognitive impairment (NCI), MCI, or AD. RGCC mRNA and protein levels were upregulated by ∼50%-60% in MCI and AD compared to NCI, and RGCC protein levels were associated with poorer antemortem global cognitive performance in the subjects examined. To test whether RGCC might regulate neuronal cell cycle reentry and apoptosis, we differentiated neuronotypic PC12 cultures with nerve growth factor (NGF) followed by NGF withdrawal to induce abortive cell cycle activation and cell death. Experimental reduction of RGCC levels increased cell survival and reduced levels of the cdk1 target cyclin B1. RGCC may be a candidate cell cycle target for neuroprotection during the onset of AD.
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28
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Paneru B, Al-Tobasei R, Palti Y, Wiens GD, Salem M. Differential expression of long non-coding RNAs in three genetic lines of rainbow trout in response to infection with Flavobacterium psychrophilum. Sci Rep 2016; 6:36032. [PMID: 27786264 PMCID: PMC5081542 DOI: 10.1038/srep36032] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 10/10/2016] [Indexed: 12/15/2022] Open
Abstract
Bacterial cold-water disease caused by Flavobacterium psychrophilum is one of the major causes of mortality of salmonids. Three genetic lines of rainbow trout designated as ARS-Fp-R (resistant), ARS-Fp-C (control) and ARS-Fp-S (susceptible) have significant differences in survival rate following F. psychrophilum infection. Previous study identified transcriptome differences of immune-relevant protein-coding genes at basal and post infection levels among these genetic lines. Using RNA-Seq approach, we quantified differentially expressed (DE) long non-coding RNAs (lncRNAs) in response to F. psychrophilum challenge in these genetic lines. Pairwise comparison between genetic lines and different infection statuses identified 556 DE lncRNAs. A positive correlation existed between the number of the differentially regulated lncRNAs and that of the protein-coding genes. Several lncRNAs showed strong positive and negative expression correlation with their overlapped, neighboring and distant immune related protein-coding genes including complement components, cytokines, chemokines and several signaling molecules involved in immunity. The correlated expressions and genome-wide co-localization suggested that some lncRNAs may be involved in regulating immune-relevant protein-coding genes. This study provides the first evidence of lncRNA-mediated regulation of the anti-bacterial immune response in a commercially important aquaculture species and will likely help developing new genetic markers for rainbow trout disease resistance.
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Affiliation(s)
- Bam Paneru
- Department of Biology and Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, TN, 37132, U.S
| | - Rafet Al-Tobasei
- Computational Science Program, Middle Tennessee State University, Murfreesboro, TN 37132, U.S
| | - Yniv Palti
- The National Center for Cool and Cold Water Aquaculture, USDA Agricultural Research Service, Kearneysville, WV 25430, U.S
| | - Gregory D Wiens
- The National Center for Cool and Cold Water Aquaculture, USDA Agricultural Research Service, Kearneysville, WV 25430, U.S
| | - Mohamed Salem
- Department of Biology and Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, TN, 37132, U.S.,Computational Science Program, Middle Tennessee State University, Murfreesboro, TN 37132, U.S
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Yang J, Zhang J. Influence of protein kinase C (PKC) on the prognosis of diabetic nephropathy patients. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:14925-14931. [PMID: 26823823 PMCID: PMC4713609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 08/21/2015] [Indexed: 06/05/2023]
Abstract
AIMS To investigate the association between protein kinase C (PKC) and the prognosis of patients with diabetic nephropathy (DN). METHODS 92 patients with DN who had received treatments with angiotensin converting enzyme inhibitor (ACEI) or angiotensin-receptor blockade (ARB) were collected. The clinicopathologic characteristics were recorded and a 4-year follow-up with the final result of impaired renal functions (eGFR < 40 mL/min) was conducted. The expression of PKC was detected by immunohistochemical assay. Kaplan-Meier and Cox regression analysis were performed to estimate the effects of PKC on DN prognosis. RESULTS According to immunohistochemical analysis, there were 54 cases with positive expression of PKC (positive rate 58.7%). Meanwhile, during the follow-up, the urine protein, mean serum creatinine and eGFR in patients with positive PKC were all higher than those in negative expression group (P < 0.05). The expression of PKC was influenced by age (P < 0.001), course of disease (P < 0.001), blood pressure (P = 0.002), blood glucose (P < 0.001), HbA1c (P = 0.002), renal functions of patients before (P = 0.011) and after (P = 0.041) the biopsy. Besides, the Kaplan-Meier curve revealed that patients with positive PKC expression had shorter survival time than those with negative PKC expression (P < 0.001). Cox regression analysis indicated that HbA1c (P = 0.009), renal functions of patients after the biopsy (P = 0.002) and PKC (P = 0.028) were important factors in the prognosis of DN and they might be independent prognostic markers. CONCLUSION The expression of PKC is relatively higher in DN patients than in healthy controls. And PKC may be a valuable prognostic marker for patients with DN.
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Affiliation(s)
- Jie Yang
- Second Department of Endocrinology, Tai An Central Hospital Shandong Province, China
| | - Jian Zhang
- Second Department of Endocrinology, Tai An Central Hospital Shandong Province, China
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30
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Vlaicu SI, Tatomir A, Rus V, Mekala AP, Mircea PA, Niculescu F, Rus H. The role of complement activation in atherogenesis: the first 40 years. Immunol Res 2015; 64:1-13. [DOI: 10.1007/s12026-015-8669-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Djaldetti M, Bessler H. High temperature affects the phagocytic activity of human peripheral blood mononuclear cells. Scandinavian Journal of Clinical and Laboratory Investigation 2015; 75:482-6. [PMID: 26067609 DOI: 10.3109/00365513.2015.1052550] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND The ability for engulfment of pathogens and inert particles is the key hallmark of the phagocytic cells. Phagocytes play a significant role in the modulation of local or extended inflammation. Since fever activates a number of factors linked with the immune response it was the goal of this study to examine the in vitro effect of hyperthermia on the phagocytic capacity, the number of phagocytic cells and the viability of human peripheral blood mononuclear cells (PBMC) at 37 and 40°C. METHODS PBMC were incubated with 0.8 μm polysterene latex beads, for 2 hours at 37 and 40°C. The number of phagocytic cells, and that of latex particles internalized by each individual cell was counted with a light microscope. In addition, the percentage of viable cells and the number of active metabolic cells was evaluated. RESULTS A temperature of 40°C significantly increased the number of phagocytic cells and the phagocytic index by 41 and 37% respectively, as compared to cells incubated at 37°C. While the number of vital cells (trypan blue test) did not differ statistically at both temperatures, the number of active metabolic cells (XTT test) after 2 h of incubation at 40°C was 17% higher as compared with that at 37°C. However, the number of active metabolic cells after 24 h of incubation at 40°C was 51% lower compared with cells incubated at 37°C. CONCLUSIONS The increased phagocytic capacity of human peripheral blood monocytes at high temperature further enlightens the immunomodulatory effect of fever in the immune responses during inflammation.
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Affiliation(s)
- Meir Djaldetti
- Laboratory for Immunology and Hematology Research, Rabin Medical Center, Hasharon Hospital,Petah-Tiqva, and the Sackler School of Medicine, Tel-Aviv University , Ramat-Aviv , Israel
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Chávez-Galán L, Olleros ML, Vesin D, Garcia I. Much More than M1 and M2 Macrophages, There are also CD169(+) and TCR(+) Macrophages. Front Immunol 2015; 6:263. [PMID: 26074923 PMCID: PMC4443739 DOI: 10.3389/fimmu.2015.00263] [Citation(s) in RCA: 294] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 05/12/2015] [Indexed: 12/18/2022] Open
Abstract
Monocytes are considered to be precursor cells of the mononuclear phagocytic system, and macrophages are one of the leading members of this cellular system. Macrophages play highly diverse roles in maintaining an organism's integrity by either directly participating in pathogen elimination or repairing tissue under sterile inflammatory conditions. There are different subpopulations of macrophages and each one has its own characteristics and functions. In this review, we summarize present knowledge on the polarization of macrophages that allows the generation of subpopulations called classically activated macrophages or M1 and alternative activated macrophages or M2. Furthermore, there are macrophages that their origin and characterization still remain unclear but have been involved as main players in some human pathologies. Thus, we also review three other categories of macrophages: tumor-associated macrophages, CD169(+) macrophages, and the recently named TCR(+) macrophages. Based on the literature, we provide information on the molecular characterization of these macrophage subpopulations and their specific involvement in several human pathologies such as cancer, infectious diseases, obesity, and asthma. The refined characterization of the macrophage subpopulations can be useful in designing new strategies, supplementing those already established for the treatment of diseases using macrophages as a therapeutic target.
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Affiliation(s)
- Leslie Chávez-Galán
- Department of Pathology and Immunology, Faculty of Medicine, Centre Medical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- Laboratory of Integrative Immunology, National Institute of Respiratory Diseases Ismael Cosio Villegas, Mexico City, Mexico
| | - Maria L. Olleros
- Department of Pathology and Immunology, Faculty of Medicine, Centre Medical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Dominique Vesin
- Department of Pathology and Immunology, Faculty of Medicine, Centre Medical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Irene Garcia
- Department of Pathology and Immunology, Faculty of Medicine, Centre Medical Universitaire (CMU), University of Geneva, Geneva, Switzerland
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Expression of RGC32 in human normal and preeclamptic placentas and its role in trophoblast cell invasion and migration. Placenta 2015; 36:350-6. [DOI: 10.1016/j.placenta.2014.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 11/18/2014] [Accepted: 12/15/2014] [Indexed: 11/18/2022]
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