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Xu M, Lu X, Zhu F, Sun X, Yao H, Zhang J, Chen W, Zhu H, Liu F, Shi SL, Deng X. BRG1 mediates epigenetic regulation of TNFα-induced CCL2 expression in oral tongue squamous cell carcinoma cells. J Cell Biochem 2024; 125:e30535. [PMID: 38348687 DOI: 10.1002/jcb.30535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/02/2023] [Accepted: 01/30/2024] [Indexed: 04/11/2024]
Abstract
Strong evidence has indicated that upregulation of chemokine (CC motif) ligand-2 (CCL2) expression and the presence of an inflammatory tumor microenvironment significantly contribute to the migratory and invasive properties of oral squamous cell carcinoma, specifically oral tongue squamous cell carcinoma (OTSCC). However, the precise epigenetic mechanism responsible for enhanced CCL2 expression in response to the inflammatory mediator tumor necrosis factor alpha (TNF-α) in OTSCC remains inadequately elucidated. We have demonstrated that the production of CCL2 can be induced by TNF-α, and this induction is mediated by the chromatin remodel protein BRG1. Through the use of a chromatin immunoprecipitation (ChIP) assay, we have found that BRG1 was involved in the recruitment of acetylated histones H3 and H4 at the CCL2 promoter, thereby activating TNF-α-induced CCL2 transcription. Furthermore, we have observed that recruitment of NF-κB p65 to the CCL2 promoter was increased following BRG1 overexpression and decreased after BRG1 knockdown in OTSCC cells. Our Re-ChIP assay has shown that BRG1 knockdown completely inhibits the recruitment of both acetylated histone H3 or H4 and NF-κB to the CCL2 promoter. In summary, the findings of our study demonstrate that BRG1 plays a significant role in mediating the production of CCL2 in OTSCC cells in response to TNF-α stimulation. This process involves the cooperative action of acetylated histone and NF-κB recruitment to the CCL2 promoter site. Our data suggest that BRG1 serves as a critical epigenetic mediator in the regulation of TNF-α-induced CCL2 transcription in OTSCC cells.
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Affiliation(s)
- Mingyan Xu
- School of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Implantology, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, Fujian, China
| | - Xuemei Lu
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Feixiang Zhu
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xue Sun
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Hongfa Yao
- Department of Implantology, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, Fujian, China
| | - Junling Zhang
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Weishi Chen
- Department of Stomatology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang, China
| | - Haohao Zhu
- Department of Pathology, The 908th Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Nanchang, Jiangxi, China
| | - Fan Liu
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Song Lin Shi
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xiaoling Deng
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, Fujian, China
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Yang G, Yang Y, Liu Y, Liu X. Regulation of alveolar macrophage death in pulmonary fibrosis: a review. Apoptosis 2023; 28:1505-1519. [PMID: 37707713 PMCID: PMC10618387 DOI: 10.1007/s10495-023-01888-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/15/2023]
Abstract
Pulmonary fibrosis (PF) is a disease in which excessive extracellular matrix (ECM) accumulation occurs in pulmonary mesenchyme, which induces the destruction of alveolar structures and poor prognosis. Macrophage death is responsible for ECM accumulation after alveolar epithelial injury in PF. Depending on the local micro-environments, macrophages can be polarized to either classically activated (M1) or alternatively activated (M2) macrophage phenotypes. In general, M1 macrophages can promote inflammation and sterilization, stop the continuous damage process and prevent excessive repair, while M2 macrophages are anti-inflammatory and promote tissue repair, and excessive M2 macrophage activity may inhibit the absorption and degradation of ECM. Emerging evidence has revealed that death forms such as pyroptosis mediated by inflammasome affect polarization direction and ultimately lead to the development of PF. Pharmacological manipulation of macrophages death signals may serve as a logical therapeutic strategy for PF. This review will focus on the current state of knowledge regarding the regulation and underlying mechanisms of macrophages and their mediators in the influence of macrophage death on the development of PF. We expect to provide help in developing effective therapeutic strategies in clinical settings.
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Affiliation(s)
- Ganghao Yang
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China
| | - Yang Yang
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China
| | - Yiping Liu
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China
| | - Xiaoshu Liu
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China.
- Department of Respiratory and Critical Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuai Fu Yuan Street, Dong Cheng District, Beijing, 100730, China.
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Ghare SS, Charpentier BT, Ghooray DT, Zhang J, Vadhanam MV, Reddy S, Joshi-Barve S, McClain CJ, Barve SS. Tributyrin Mitigates Ethanol-Induced Lysine Acetylation of Histone-H3 and p65-NFκB Downregulating CCL2 Expression and Consequent Liver Inflammation and Injury. Nutrients 2023; 15:4397. [PMID: 37892472 PMCID: PMC10610222 DOI: 10.3390/nu15204397] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/27/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
PURPOSE Chemokine-driven leukocyte infiltration and sustained inflammation contribute to alcohol-associated liver disease (ALD). Elevated hepatic CCL2 expression, seen in ALD, is associated with disease severity. However, mechanisms of CCL2 regulation are not completely elucidated. Post-translational modifications (PTMs) of proteins, particularly acetylation, modulate gene expression. This study examined the acetylation changes of promoter-associated histone-H3 and key transcription factor-NFκB in regulating hepatic CCL2 expression and subsequent inflammation and injury. Further, the effect of therapeutic modulation of the acetylation state by tributyrin (TB), a butyrate prodrug, was assessed. METHODS Hepatic CCL2 expression was assessed in mice fed control (PF) or an ethanol-containing Lieber-DeCarli (5% v/v, EF) diet for 7 weeks with or without oral administration of tributyrin (TB, 2 g/kg, 5 days/week). A chromatin immunoprecipitation (ChIP) assay evaluated promoter-associated modifications. Nuclear association between SIRT1, p300, and NFκB-p65 and acetylation changes of p65 were determined using immunoprecipitation and Western blot analyses. A Student's t-test and one-way ANOVA determined the significance. RESULTS Ethanol significantly increased promoter-associated histone-H3-lysine-9 acetylation (H3K9Ac), reflecting a transcriptionally permissive state with a resultant increase in hepatic CCL2 mRNA and protein expression. Moreover, increased lysine-310-acetylation of nuclear RelA/p65 decreased its association with SIRT1, a class III HDAC, but concomitantly increased with p300, a histone acetyltransferase. This further led to enhanced recruitment of NF-κB/p65 and RNA polymerase-II to the CCL2 promoter. Oral TB administration prevented ethanol-associated acetylation changes, thus downregulating CCL2 expression, hepatic neutrophil infiltration, and inflammation/ injury. CONCLUSION The modulation of a protein acetylation state via ethanol or TB mechanistically regulates hepatic CCL2 upregulation in ALD.
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Affiliation(s)
- Smita S. Ghare
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Benjamin T. Charpentier
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- Department of Anatomical Science and Neurobiology, University of Louisville, Louisville, KY 40202, USA
| | - Dushan T. Ghooray
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Jingwen Zhang
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Manicka V. Vadhanam
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Sreelatha Reddy
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Swati Joshi-Barve
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Craig J. McClain
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
- Robley Rex VA Medical Center, University of Louisville, Louisville, KY 40202, USA
| | - Shirish S. Barve
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
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Liu S, Liu C, Wang Q, Liu S, Min J. CC Chemokines in Idiopathic Pulmonary Fibrosis: Pathogenic Role and Therapeutic Potential. Biomolecules 2023; 13:biom13020333. [PMID: 36830702 PMCID: PMC9953349 DOI: 10.3390/biom13020333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 02/12/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF), characterized by progressive worsening of dyspnea and irreversible decline in lung function, is a chronic and progressive respiratory disease with a poor prognosis. Chronic or repeated lung injury results in inflammation and an excessive injury-repairing response that drives the development of IPF. A number of studies have shown that the development and progression of IPF are associated with dysregulated expression of several chemokines and chemokine receptors, several of which have been used as predictors of IPF outcome. Chemokines of the CC family play significant roles in exacerbating IPF progression by immune cell attraction or fibroblast activation. Modulating levels of detrimental CC chemokines and interrupting the corresponding transduction axis by neutralizing antibodies or antagonists are potential treatment options for IPF. Here, we review the roles of different CC chemokines in the pathogenesis of IPF, and their potential use as biomarkers or therapeutic targets.
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Affiliation(s)
- Shanshan Liu
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
- Correspondence:
| | - Chang Liu
- Drug Clinical Trial Institution, Children’s Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Qianrong Wang
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Suosi Liu
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Jiali Min
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
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Pi Z, Qiu X, Liu J, Shi Y, Zeng Z, Xiao R. Activating Protein-1 (AP-1): A Promising Target for the Treatment of Fibrotic Diseases. Curr Med Chem 2023; 31:CMC-EPUB-129375. [PMID: 36757030 DOI: 10.2174/0929867330666230209100059] [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: 09/06/2022] [Revised: 12/04/2022] [Accepted: 12/29/2022] [Indexed: 02/10/2023]
Abstract
The fibrosis of tissues and organs occurs via an aberrant tissue remodeling process characterized by an excessive deposition of extracellular matrix, which can lead to organ dysfunction, organ failure, and death. Because the pathogenesis of fibrosis remains unclear and elusive, there is currently no medication to reverse it; hence, this process deserves further study. Activating protein-1 (AP-1)-comprising Jun (c-Jun, JunB, JunD), Fos (c-fos, FosB, Fra1, and Fra2), and activating transcription factor-is a versatile dimeric transcription factor. Numerous studies have demonstrated that AP-1 plays a crucial role in advancing tissue and organ fibrosis via induction of the expression of fibrotic molecules and activating fibroblasts. This review focuses on the role of AP-1 in a range of fibrotic disorders as well as on the antifibrotic effects of AP-1 inhibitors. It also discusses the potential of AP-1 as a new therapeutic target in conditions involving tissue and organ fibrosis.
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Affiliation(s)
- Zixin Pi
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
- Department of Medical Genetics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
| | - Xiangning Qiu
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
| | - Jiani Liu
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
| | - Yaqian Shi
- Second Xiangya Hospital of Central South University Department of Dermatology Changsha China
| | - Zhuotong Zeng
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
| | - Rong Xiao
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
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6
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Yadahalli R, Sarode GS, Sarode SC, Khan ZA, Vyas N, Kharat AH, Bhandi S, Awan KH, Patil S. CC group of chemokines and associated gene expression of transcription factors: Deciphering immuno-pathogenetic aspect of oral submucous fibrosis. Dis Mon 2023; 69:101351. [PMID: 35341590 DOI: 10.1016/j.disamonth.2022.101351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Oral submucous fibrosis (OSMF) is a chronic disease with significantly increasing malignant transformation rate. To date the pathogenesis of OSMF has been considered to be associated with areca nut constituents and their action on fibroblasts. However, fibrosis is also associated with immunological factors such as chemokines. In-depth analysis of such factors is the need of the hour in OSMF to better understand the pathogenesis so that effective therapeutic strategies can be developed in the future. MATERIALS AND METHOD Clinically diagnosed cases of OSMF (n=21) and healthy individuals (n=10) were enrolled in the present study. Chemokines such as CCL2, CCL3, CCL4, CCL5, CCL11, CCL17, CCL28, CXCL1, CXCL5, CXCL8, CXCL9, CXCL10, and CXCL11 were assessed using the chemokine bead array in conjunction with the flow cytometry, along with real-time PCR (RT-PCR). The transcription factors CREB, NF-κB and NFAT5 were also studied for their expressions. The analysis of pg/ml (picogram/milliliter) values was done by using LEGENDplex™ Data Analysis Software. RESULTS The results obtained demonstrated early phase transient increase in CXCL-11, CCL20, CXCL9, CCL3, CCL2, CXCL10 and CXCL8. However, the expression of CCL3, CXCL10 and CXCL8 was higher in the late stage as compared to the early stage. The relative gene expression of CREB, NF-κB, NFAT5 were upregulated in the late stage of OSMF when compared to normal. CONCLUSION Distinctive sets of chemokine expression during the early and late stages of OSMF suggest a unique pattern of disease progression playing an important role in the pathogenesis.
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Affiliation(s)
- Roopa Yadahalli
- Department of Oral Pathology and Microbiology, Dr. D.Y.Patil Dental College and Hospital, Dr.D.Y.Patil Vidyapeeth, Pune, Maharashtra, India
| | - Gargi S Sarode
- Department of Oral Pathology and Microbiology, Dr. D.Y.Patil Dental College and Hospital, Dr.D.Y.Patil Vidyapeeth, Pune, Maharashtra, India
| | - Sachin C Sarode
- Department of Oral Pathology and Microbiology, Dr. D.Y.Patil Dental College and Hospital, Dr.D.Y.Patil Vidyapeeth, Pune, Maharashtra, India
| | - Zafar Ali Khan
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
| | | | - Avinash H Kharat
- Regenerative medicine laboratory, Dr. D.Y.Patil Dental College and Hospital, Dr.D.Y.Patil Vidyapeeth, Pune, India
| | - Shilpa Bhandi
- Department of Restorative Dental Science, Division of Operative Dentistry, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
| | - Kamran Habib Awan
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, UT, United States
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia.
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Qin R, Mahal LK, Bojar D. Deep learning explains the biology of branched glycans from single-cell sequencing data. iScience 2022; 25:105163. [PMID: 36217547 PMCID: PMC9547197 DOI: 10.1016/j.isci.2022.105163] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 09/06/2022] [Accepted: 09/16/2022] [Indexed: 11/03/2022] Open
Abstract
Glycosylation is ubiquitous and often dysregulated in disease. However, the regulation and functional significance of various types of glycosylation at cellular levels is hard to unravel experimentally. Multi-omics, single-cell measurements such as SUGAR-seq, which quantifies transcriptomes and cell surface glycans, facilitate addressing this issue. Using SUGAR-seq data, we pioneered a deep learning model to predict the glycan phenotypes of cells (mouse T lymphocytes) from transcripts, with the example of predicting β1,6GlcNAc-branching across T cell subtypes (test set F1 score: 0.9351). Model interpretation via SHAP (SHapley Additive exPlanations) identified highly predictive genes, in part known to impact (i) branched glycan levels and (ii) the biology of branched glycans. These genes included physiologically relevant low-abundance genes that were not captured by conventional differential expression analysis. Our work shows that interpretable deep learning models are promising for uncovering novel functions and regulatory mechanisms of glycans from integrated transcriptomic and glycomic datasets.
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Affiliation(s)
- Rui Qin
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Lara K. Mahal
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Daniel Bojar
- Department of Chemistry and Molecular Biology, University of Gothenburg, 405 30 Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, 405 30 Gothenburg, Sweden
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8
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Al Abadey A, Connor B, Flamme ACL, Robichon K. Clozapine reduces chemokine-mediated migration of lymphocytes by targeting NF-κB and AKT phosphorylation. Cell Signal 2022; 99:110449. [PMID: 36031090 DOI: 10.1016/j.cellsig.2022.110449] [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: 06/20/2022] [Revised: 08/11/2022] [Accepted: 08/22/2022] [Indexed: 11/27/2022]
Abstract
Multiple sclerosis is a disease characterised by demyelination of axons in the central nervous system. The atypical antipsychotic drug clozapine has been shown to attenuate disease severity in experimental autoimmune encephalomyelitis (EAE), a mouse model that is useful for the study of multiple sclerosis. However, the mechanism of action by which clozapine reduces disease in EAE is poorly understood. To better understand how clozapine exerts its protective effects, we investigated the underlying signalling pathways by which clozapine may reduce immune cell migration by evaluating chemokine and dopamine receptor-associated signalling pathways. We found that clozapine inhibits migration of immune cells by reducing chemokine production in microglia cells by targeting NF-κB phosphorylation and promoting an anti-inflammatory milieu. Furthermore, clozapine directly targets immune cell migration by changing Ca2+ levels within immune cells and reduces the phosphorylation of signalling protein AKT. Linking these pathways to the antagonising effect of clozapine on dopamine and serotonin receptors, we provide insight into how clozapine alters immune cells migration by directly targeting the underlying migration-associated pathways.
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Affiliation(s)
- Afnan Al Abadey
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand; Centre for Biodiscovery Wellington, Victoria University of Wellington, Wellington, New Zealand
| | - Bronwen Connor
- Department of Pharmacology and Clinical Pharmacology, Centre for Brain Research, University of Auckland, Auckland, New Zealand
| | - Anne Camille La Flamme
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand; Centre for Biodiscovery Wellington, Victoria University of Wellington, Wellington, New Zealand; Malaghan Institute of Medical Research, Wellington, New Zealand
| | - Katharina Robichon
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand; Centre for Biodiscovery Wellington, Victoria University of Wellington, Wellington, New Zealand.
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9
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Kumar P, Soory A, Mustfa SA, Sarmah DT, Devvanshi H, Chatterjee S, Bossis G, Ratnaparkhi GS, Srikanth CV. Bidirectional regulation between AP-1 and SUMO genes modulates inflammatory signalling during Salmonella infection. J Cell Sci 2022; 135:276158. [PMID: 35904007 DOI: 10.1242/jcs.260096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/18/2022] [Indexed: 11/20/2022] Open
Abstract
Post-translational modifications (PTMs), such as SUMOylation, are known to modulate fundamental processes of a cell. Infectious agents such as Salmonella Typhimurium (STm) that causes gastroenteritis, utilizes PTM mechanism SUMOylation to highjack host cell. STm suppresses host SUMO-pathway genes Ubc9 and PIAS1 to perturb SUMOylation for an efficient infection. In the present study, the regulation of SUMO-pathway genes during STm infection was investigated. A direct binding of c-Fos, a component of AP-1 (Activator Protein-1), to promoters of both UBC9 and PIAS1 was observed. Experimental perturbation of c-Fos led to changes in expression of both Ubc9 and PIAS1. STm infection of fibroblasts with SUMOylation deficient c-Fos (c-FOS-KOSUMO-def-FOS) resulted in uncontrolled activation of target genes, resulting in massive immune activation. Infection of c-FOS-KOSUMO-def-FOS cells favored STm replication, indicating misdirected immune mechanisms. Finally, chromatin Immuno-precipitation assays confirmed a context dependent differential binding and release of AP-1 to/from target genes due to its Phosphorylation and SUMOylation respectively. Overall, our data point towards existence of a bidirectional cross-talk between c-Fos and the SUMO pathway and highlighting its importance in AP-1 function relevant to STm infection and beyond.
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Affiliation(s)
- Pharvendra Kumar
- Regional Centre for Biotechnology, 3rd milestone Gurgaon Faridabad Expressway, Faridabad, India.,Kalinga Institute of Industrial Technology, Bhubaneshwar, India
| | | | | | - Dipanka Tanu Sarmah
- Translational Health Science and Technology Institute, 3rd milestone Gurgaon Faridabad Expressway, Faridabad, India
| | - Himadri Devvanshi
- Translational Health Science and Technology Institute, 3rd milestone Gurgaon Faridabad Expressway, Faridabad, India
| | - Samrat Chatterjee
- Translational Health Science and Technology Institute, 3rd milestone Gurgaon Faridabad Expressway, Faridabad, India
| | - Guillaume Bossis
- Institut de Génétique Moléculaire de Montpellier (IGMM), Univ Montpellier, CNRS, Montpellier, France
| | | | - C V Srikanth
- Regional Centre for Biotechnology, 3rd milestone Gurgaon Faridabad Expressway, Faridabad, India
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10
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Magkrioti C, Antonopoulou G, Fanidis D, Pliaka V, Sakellaropoulos T, Alexopoulos LG, Ullmer C, Aidinis V. Lysophosphatidic Acid Is a Proinflammatory Stimulus of Renal Tubular Epithelial Cells. Int J Mol Sci 2022; 23:ijms23137452. [PMID: 35806457 PMCID: PMC9267536 DOI: 10.3390/ijms23137452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/28/2022] [Accepted: 07/02/2022] [Indexed: 02/01/2023] Open
Abstract
Chronic kidney disease (CKD) refers to a spectrum of diseases defined by renal fibrosis, permanent alterations in kidney structure, and low glomerular-filtration rate. Prolonged epithelial-tubular damage involves a series of changes that eventually lead to CKD, highlighting the importance of tubular epithelial cells in this process. Lysophosphatidic acid (LPA) is a bioactive lipid that signals mainly through its six cognate LPA receptors and is implicated in several chronic inflammatory pathological conditions. In this report, we have stimulated human proximal tubular epithelial cells (HKC-8) with LPA and 175 other possibly pathological stimuli, and simultaneously detected the levels of 27 intracellular phosphoproteins and 32 extracellular secreted molecules with multiplex ELISA. This quantification revealed a large amount of information concerning the signaling and the physiology of HKC-8 cells that can be extrapolated to other proximal tubular epithelial cells. LPA responses clustered with pro-inflammatory stimuli such as TNF and IL-1, promoting the phosphorylation of important inflammatory signaling hubs, including CREB1, ERK1, JUN, IκΒα, and MEK1, as well as the secretion of inflammatory factors of clinical relevance, including CCL2, CCL3, CXCL10, ICAM1, IL-6, and IL-8, most of them shown for the first time in proximal tubular epithelial cells. The identified LPA-induced signal-transduction pathways, which were pharmacologically validated, and the secretion of the inflammatory factors offer novel insights into the possible role of LPA in CKD pathogenesis.
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Affiliation(s)
- Christiana Magkrioti
- Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece; (C.M.); (G.A.); (D.F.)
| | - Georgia Antonopoulou
- Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece; (C.M.); (G.A.); (D.F.)
| | - Dionysios Fanidis
- Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece; (C.M.); (G.A.); (D.F.)
| | - Vaia Pliaka
- ProtATonce Ltd., 15343 Athens, Greece; (V.P.); (T.S.); (L.G.A.)
| | | | - Leonidas G. Alexopoulos
- ProtATonce Ltd., 15343 Athens, Greece; (V.P.); (T.S.); (L.G.A.)
- School of Mechanical Engineering, National Technical University of Athens, 15780 Zografou, Greece
| | - Christoph Ullmer
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland;
| | - Vassilis Aidinis
- Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece; (C.M.); (G.A.); (D.F.)
- Correspondence:
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11
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Loss of RNA binding protein HuD facilitates the production of the senescence-associated secretory phenotype. Cell Death Dis 2022; 13:329. [PMID: 35411051 PMCID: PMC9001635 DOI: 10.1038/s41419-022-04792-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/08/2022] [Accepted: 02/16/2022] [Indexed: 02/06/2023]
Abstract
HuD, an RNA binding protein, plays a role in the regulation of gene expression in certain types of cells, including neuronal cells and pancreatic β-cells, via RNA metabolism. Its aberrant expression is associated with the pathogenesis of several human diseases. To explore HuD-mediated gene regulation, stable cells expressing short hairpin RNA against HuD were established using mouse neuroblastoma Neuro2a (N2a) cells, which displayed enhanced phenotypic characteristics of cellular senescence. Two approaches, RNA immunoprecipitation (RNA IP)-NanoString profiling and cytokine array, were used to subsequently identify a subset of putative HuD targets that act as senescence-associated secretory phenotype (SASP), including C-C motif ligand 2 (CCL2), CCL20, C-X-C motif chemokine ligand 2 (CXCL2), and interleukin-6 (IL-6). Here, we further demonstrated that HuD regulates the expression of CCL2, a SASP candidate upregulated in cells following HuD knockdown, by binding to the 3′-untranslated region (UTR) of Ccl2 mRNA. Downregulation of HuD increased the level of CCL2 in N2a cells and the brain tissues of HuD knockout (KO) mice. Exposure to γ-irradiation induced cellular senescence in N2a cells and HuD knockdown facilitated stress-induced cellular senescence. Our results reveal that HuD acts as a novel regulator of CCL2 expression, and its aberrant expression may contribute to cellular senescence by regulating SASP production.
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12
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Pandey P, Al Rumaih Z, Kels MJT, Ng E, Kc R, Chaudhri G, Karupiah G. Targeting ectromelia virus and TNF/NF-κB or STAT3 signaling for effective treatment of viral pneumonia. Proc Natl Acad Sci U S A 2022; 119:e2112725119. [PMID: 35177474 PMCID: PMC8872766 DOI: 10.1073/pnas.2112725119] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 01/13/2022] [Indexed: 12/14/2022] Open
Abstract
Viral causes of pneumonia pose constant threats to global public health, but there are no specific treatments currently available for the condition. Antivirals are ineffective when administered late after the onset of symptoms. Pneumonia is caused by an exaggerated inflammatory cytokine response to infection, but tissue necrosis and damage caused by virus also contribute to lung pathology. We hypothesized that viral pneumonia can be treated effectively if both virus and inflammation are simultaneously targeted. Combined treatment with the antiviral drug cidofovir and etanercept, which targets tumor necrosis factor (TNF), down-regulated nuclear factor kappa B-signaling and effectively reduced morbidity and mortality during respiratory ectromelia virus (ECTV) infection in mice even when treatment was initiated after onset of clinical signs. Treatment with cidofovir alone reduced viral load, but animals died from severe lung pathology. Treatment with etanercept had no effect on viral load but diminished levels of inflammatory cytokines and chemokines including TNF, IL-6, IL-1β, IL-12p40, TGF-β, and CCL5 and dampened activation of the STAT3 cytokine-signaling pathway, which transduces signals from multiple cytokines implicated in lung pathology. Consequently, combined treatment with a STAT3 inhibitor and cidofovir was effective in improving clinical disease and lung pathology in ECTV-infected mice. Thus, the simultaneous targeting of virus and a specific inflammatory cytokine or cytokine-signaling pathway is effective in the treatment of pneumonia. This approach might be applicable to pneumonia caused by emerging and re-emerging viruses, like seasonal and pandemic influenza A virus strains and severe acute respiratory syndrome coronavirus 2.
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Affiliation(s)
- Pratikshya Pandey
- Viral Immunology and Immunopathology Group, Tasmanian School of Medicine, University of Tasmania, Hobart, TAS 7000, Australia
| | - Zahrah Al Rumaih
- Department of Immunology, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | - Ma Junaliah Tuazon Kels
- Department of Immunology, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | - Esther Ng
- Department of Immunology, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | - Rajendra Kc
- Viral Immunology and Immunopathology Group, Tasmanian School of Medicine, University of Tasmania, Hobart, TAS 7000, Australia
| | - Geeta Chaudhri
- Department of Immunology, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | - Gunasegaran Karupiah
- Viral Immunology and Immunopathology Group, Tasmanian School of Medicine, University of Tasmania, Hobart, TAS 7000, Australia;
- Department of Immunology, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
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13
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Czarnek M, Stalińska K, Sarad K, Bereta J. shRNAs targeting mouse Adam10 diminish cell response to proinflammatory stimuli independently of Adam10 silencing. Biol Open 2022; 11:274200. [PMID: 35107128 PMCID: PMC8905717 DOI: 10.1242/bio.059092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/20/2022] [Indexed: 11/23/2022] Open
Abstract
RNA interference is one of the common methods of studying protein functions. In recent years critical reports have emerged indicating that off-target effects may have a much greater impact on RNAi-based analysis than previously assumed. We studied the influence of Adam10 and Adam17 silencing on MC38CEA cell response to proinflammatory stimuli. Eight lentiviral vector-encoded shRNAs that reduced ADAM10 expression, including two that are specific towards ADAM17, caused inhibition of cytokine-induced Nos2 expression presumably via off-target effects. ADAM10 silencing was not responsible for this effect because: (i) CRISPR/Cas9 knockdown of ADAM10 did not affect Nos2 levels; (ii) ADAM10 inhibitor increased rather than decreased Nos2 expression; (iii) overexpression of ADAM10 in the cells with shRNA-silenced Adam10 did not reverse the effect induced by shRNA; (iv) shRNA targeting ADAM10 resulted in decrease of Nos2 expression even in ADAM10-deficient cells. The studied shRNAs influenced transcription of Nos2 rather than stability of Nos2 mRNA. They also affected stimulation of Ccl2 and Ccl7 expression. Additionally, we used vectors with doxycycline-inducible expression of chosen shRNAs and observed reduced activation of NF-κB and, to a lesser extent, AP-1 transcription factors. We discuss the requirements of strict controls and verification of results with complementary methods for reliable conclusions of shRNA-based experiments. Summary: Use of several specific shRNAs is not enough to escape a pitfall of their off-target activity: the case of Adam10 and Adam17 silencing.
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Affiliation(s)
- Maria Czarnek
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7, 30-387 Kraków, Poland
| | - Krystyna Stalińska
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7, 30-387 Kraków, Poland
| | - Katarzyna Sarad
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7, 30-387 Kraków, Poland
| | - Joanna Bereta
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7, 30-387 Kraków, Poland
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14
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Derler R, Kitic N, Gerlza T, Kungl AJ. Isolation and Characterization of Heparan Sulfate from Human Lung Tissues. Molecules 2021; 26:5512. [PMID: 34576979 PMCID: PMC8469465 DOI: 10.3390/molecules26185512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 01/13/2023] Open
Abstract
Glycosaminoglycans are a class of linear, highly negatively charged, O-linked polysaccharides that are involved in many (patho)physiological processes. In vitro experimental investigations of such processes typically involve porcine-derived heparan sulfate (HS). Structural information about human, particularly organ-specific heparan sulfate, and how it compares with HS from other organisms, is very limited. In this study, heparan sulfate was isolated from human lung tissues derived from five donors and was characterized for their overall size distribution and disaccharide composition. The expression profiles of proteoglycans and HS-modifying enzymes was quantified in order to identify the major core proteins for HS. In addition, the binding affinities of human HS to two chemokines-CXCL8 and CCL2-were investigated, which represent important inflammatory mediators in lung pathologies. Our data revealed that syndecans are the predominant proteoglycan class in human lungs and that the disaccharide composition varies among individuals according to sex, age, and health stage (one of the donor lungs was accidentally discovered to contain a solid tumor). The compositional difference of the five human lung HS preparations affected chemokine binding affinities to various degrees, indicating selective immune cell responses depending on the relative chemokine-glycan affinities. This represents important new insights that could be translated into novel therapeutic concepts for individually treating lung immunological disorders via HS targets.
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Affiliation(s)
- Rupert Derler
- Institute of Pharmaceutical Sciences, University of Graz, Schubertstraße 1/1, 8010 Graz, Austria; (R.D.); (N.K.); (T.G.)
- Antagonis Biotherapeutics GmbH, Strasserhofweg 77a, 8045 Graz, Austria
| | - Nikola Kitic
- Institute of Pharmaceutical Sciences, University of Graz, Schubertstraße 1/1, 8010 Graz, Austria; (R.D.); (N.K.); (T.G.)
| | - Tanja Gerlza
- Institute of Pharmaceutical Sciences, University of Graz, Schubertstraße 1/1, 8010 Graz, Austria; (R.D.); (N.K.); (T.G.)
| | - Andreas J. Kungl
- Institute of Pharmaceutical Sciences, University of Graz, Schubertstraße 1/1, 8010 Graz, Austria; (R.D.); (N.K.); (T.G.)
- Antagonis Biotherapeutics GmbH, Strasserhofweg 77a, 8045 Graz, Austria
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15
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Fischer A, Manske K, Seissler J, Wohlleber D, Simm N, Wolf-van Buerck L, Knolle P, Schnieke A, Fischer K. Cytokine-inducible promoters to drive dynamic transgene expression: The "Smart Graft" strategy. Xenotransplantation 2020; 27:e12634. [PMID: 32808410 DOI: 10.1111/xen.12634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/03/2020] [Accepted: 07/20/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Ubiquitous expression of T-cell regulatory transgenes such as the cytotoxic T lymphocyte-associated antigen 4 (CTLA4) or the high-affinity variant LEA29Y improves xeno graft survival. Such donor pigs are however immunocompromised and susceptible to infection. Continous high expression of CTLA4 or LEA29Y in the graft could also compromise the health status of recipients. The novel "Smart Graft" strategy is likely to avoid these problems by controlling the expression of T-cell regulatory transgenes as and when required. METHODS Candidate promoters inducible by inflammatory cytokines were identified by in silico screening for potential NF-κB binding sites. Basal promoter levels and responsiveness to TNFα and IL1ß were quantified by expression of secreted embryonic alkaline phosphatase in cultured cells. Promoters were modified to increase responsiveness by removing regulatory elements or adding SP-1 or NF-κB binding sites and again tested in vitro. The most promising promoters were then assessed in vivo. Porcine cells expressing inducible Renilla luciferase constructs were transplanted into immunodeficient NOD-Scid-IL2 receptor gammanull (NSG) mice. Following engraftment, the recipient's immune system was reconstituted by splenocyte transfer raising an immune response to the porcine xenograft. The resulting induction of promoter activity was detected by in vivo bioimaging. RESULTS Three human (hTNFAIP1, hVCAM1 and hCCL2), and one porcine promoter (pA20) were chosen for in vitro tests. In all experiments, the semi-synthetic and inducible ELAM promoter as well as the CAG promoter were used as references. In contrast to hTNFAIP1 and hVCAM1 the ELAM, hCCL2 and pA20 promoters showed significant induction after cytokine challenge. The hCCL2 and pA20 promoters were further optimized, resulting in increased responsiveness to TNFα and IL1ß. Cytokine-dependent upregulation of promoter activity was tested in vivo, where the ELAM and the optimized hCCL2 promoters showed a 2-fold upregulation, while one of the improved A20 promoters showed almost 10-fold upregulation. Our results also revealed more than 4-fold cytokine inducibility of the CAG promoter. CONCLUSION This is the first in vivo comparison of existing and newly designed cytokine-inducible promoters. Optimization of promoter structure resulted in almost 10-fold inducibility of promoter activity. Such a rapid and dynamically regulated response to inflammation and cell damage could reduce initial graft rejection, making the "Smart Graft" approach a useful means of modulating the expression of immune regulatory transgenes to avoid deleterious effects on porcine and human health. Expressing transgenes in this fashion could provide a safer organ for transplantation.
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Affiliation(s)
- Andrea Fischer
- Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Katrin Manske
- Institute of Molecular Immunology and Experimental Oncology, Technische Universität München, Munich, Germany
| | - Jochen Seissler
- Diabetes Center, Medizinische Klinik und Polyklinik IV, Klinikum der Universität München, Munich, Germany
| | - Dirk Wohlleber
- Institute of Molecular Immunology and Experimental Oncology, Technische Universität München, Munich, Germany
| | - Nina Simm
- Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Lelia Wolf-van Buerck
- Diabetes Center, Medizinische Klinik und Polyklinik IV, Klinikum der Universität München, Munich, Germany
| | - Percy Knolle
- Institute of Molecular Immunology and Experimental Oncology, Technische Universität München, Munich, Germany
| | - Angelika Schnieke
- Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Konrad Fischer
- Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
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16
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Ma Z, Zhao X, Deng M, Huang Z, Wang J, Wu Y, Cui D, Liu Y, Liu R, Ouyang G. Bone Marrow Mesenchymal Stromal Cell-Derived Periostin Promotes B-ALL Progression by Modulating CCL2 in Leukemia Cells. Cell Rep 2020; 26:1533-1543.e4. [PMID: 30726736 DOI: 10.1016/j.celrep.2019.01.034] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 11/23/2018] [Accepted: 01/09/2019] [Indexed: 01/18/2023] Open
Abstract
Periostin (POSTN) is a multifunctional extracellular component that regulates cell-matrix interactions and cell-cell crosstalk. POSTN deletion significantly decreases leukemia burden in mice; however, the underlying mechanisms by which POSTN promotes B cell acute lymphoblastic leukemia (B-ALL) progression remain largely unknown. Here, we demonstrate that bone marrow (BM)-derived mesenchymal stromal cells (BM-MSCs) express higher levels of POSTN when co-cultured with B-ALL cells in vitro and in vivo. POSTN deficiency in BM-MSCs significantly decreases CCL2 expression in co-cultured B-ALL cells in vitro and in vivo. Moreover, POSTN treatment increases expression of CCL2 in B-ALL cells by activating the integrin-ILK-NF-κB pathway. Conversely, CCL2 treatment upregulates expression of POSTN in BM-MSCs via STAT3 activation. Furthermore, there is a positive correlation between POSTN expression and CCL2 level in the BM of mice and patients with B-ALL. These findings suggest that B-ALL cell-derived CCL2 contributes to the increased leukemia burden promoted by BM-MSC-derived POSTN.
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Affiliation(s)
- Zhenling Ma
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China; College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Xueli Zhao
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China
| | - Mingjiao Deng
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China
| | - Zhengjie Huang
- Department of Surgical Oncology, First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, China
| | - Jing Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China
| | - Yi Wu
- The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, China
| | - Dan Cui
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China
| | - Yingfu Liu
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Rushi Liu
- Laboratory of Medical Molecular and Immunological Diagnostics, School of Medicine, Hunan Normal University, Changsha, Hunan 410013, China.
| | - Gaoliang Ouyang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China.
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17
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Du S, Li Z, Xie X, Xu C, Shen X, Wang N, Shen Y. IL-17 stimulates the expression of CCL2 in cardiac myocytes via Act1/TRAF6/p38MAPK-dependent AP-1 activation. Scand J Immunol 2019; 91:e12840. [PMID: 31630418 DOI: 10.1111/sji.12840] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 09/19/2019] [Accepted: 10/15/2019] [Indexed: 12/20/2022]
Abstract
IL-17 participates in the development of many autoimmune diseases by promoting the expression of some chemokines. Chemokine C-C motif ligand 2 (CCL2) is an important factor at the infiltration of mononuclear cells in the myocardial tissue of viral myocarditis (VMC). It was found that IL-17 could aggravate myocardial injury by upregulating CCL2. But the underlying mechanism involved in CCL2 secretion induced by IL-17 in cardiac myocytes remains unclear. This study investigated the role of transcription factor AP-1 in IL-17 induced CCL2 expression. The results showed that IL-17 mediated the activation of Act1, TRAF6, p38MAPK and c-Jun/AP-1 not Wnt or PI3K signalling pathway to upregulate CCL2 expression in cardiac myocytes. After blocking Act1/TRAF6/p38MAPK cascade and interfering AP-1 with Curcumin or c-Jun siRNA, CCL2 expression induced by IL-17 was significantly attenuated at both mRNA and protein levels. Furthermore, the phosphorylation of c-Jun was suppressed when cardiac myocytes were treated with Act1 siRNA, TRAF6 siRNA, SB203580 (p38MAPK inhibitor) or SP600125 (JNK inhibitor) in cardiac myocytes. In conclusion, IL-17 could stimulate the expression of CCL2 in cardiac myocytes via Act1/TRAF6/p38MAPK-dependent AP-1 activation, which may provide a new target for the diagnosis and treatment of VMC.
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Affiliation(s)
- Shiyou Du
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhuolun Li
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou, China
| | - Xin Xie
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Congfeng Xu
- Shanghai Institute of Immunology, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinhe Shen
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Nan Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yan Shen
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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18
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Xu F, Xu F, Xie S, Zuo W, Wen G, Zhao T, Wan X. MicroRNA-448 overexpression inhibits fibroblast proliferation and collagen synthesis and promotes cell apoptosis via targeting ABCC3 through the JNK signaling pathway. J Cell Physiol 2019; 235:1374-1385. [PMID: 31506947 DOI: 10.1002/jcp.29056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 06/12/2019] [Indexed: 01/14/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a condition that results in the progressive deterioration of lung function with poor prognosis. The current study is aimed at exploring how microRNA-448 (miR-448) targeting ABCC3 affects fibroblast proliferation, apoptosis, and collagen synthesis of mice with IPF via the Jun N-terminal kinase (JNK) signaling pathway. Bioinformatics and dual-luciferase polymerase chain reaction were used to predict the relationship of miR-448 and ABCC3. The expression of miR-448 and ABCC3 was detected in IPF tissues. Using IPF mouse models, lung fibroblasts for the experiments were treated with miR-448 mimic, miR-448 inhibitor, si-ABCC3, or SP600125 (inhibitor of JNK) to evaluate the cell proliferation and apoptosis in response to miR-448. Reverse transcription quantitative polymerase chain reaction and western blot analysis were used to identify the expression of miR-448, ABCC3, and the activation of the JNK signaling pathway. ABCC3 was targeted and downregulated by miR-448 based on bioinformatics prediction and dual-luciferase reporter gene assay. Additionally, miR-448 was found to be highly expressed in IPF lung tissues with low expression levels of ABCC3. In response to the treatment of miR-448 mimic or si-ABCC3, lung fibroblasts exhibited decreased cell proliferation and increased apoptotic rates, whereas the miR-448 inhibitor reversed the conditions. Notably, we also found that miR-448 mimic inhibited the JNK signaling pathway. In conclusion, by using miR-448 to target and downregulate ABCC3 to block the JNK signaling pathway in mice with IPF, we found an increase in fibroblast apoptosis, inhibited cell proliferation, and decreased collagen synthesis of fibroblasts.
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Affiliation(s)
- Feihong Xu
- Clinical Medicine, Queen Mary College, Nanchang University, Nanchang, China
| | - Fei Xu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shiguang Xie
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wei Zuo
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Guilan Wen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Tiantian Zhao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuan Wan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
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19
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Li G, Jin F, Du J, He Q, Yang B, Luo P. Macrophage-secreted TSLP and MMP9 promote bleomycin-induced pulmonary fibrosis. Toxicol Appl Pharmacol 2019; 366:10-16. [PMID: 30653976 DOI: 10.1016/j.taap.2019.01.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/29/2018] [Accepted: 01/11/2019] [Indexed: 02/06/2023]
Abstract
Idiopathic pulmonary fibrosis is a pathological result of dysfunctional repair response to tissue injury, leading to chronically impaired gas exchange and death. Macrophages are believed to be critical in this disease pathogenesis; However, the exact mechanisms remain enigmatic. Here, we demonstrated that macrophages might contribute to pulmonary fibrosis at the early stage because the aggregation of macrophages appeared earlier than epithelial-mesenchymal transition and fibrosis in mouse and rat experimental models of pulmonary fibrosis. It has been found that macrophages could promote epithelial-mesenchymal transition of alveolar epithelial cells and fibroblast migration in co-culture models between macrophages and alveolar epithelial cells/fibroblasts. Importantly, we used protein micro array to analyze the cytokines that were altered after bleomycin treatment. Only thymic stromal lymphopoietin and matrix metalloproteinase 9 were significantly increased. We further confirmed that TSLP participated in the macrophage-induced epithelial-mesenchymal transition of alveolar epithelial cells using a TSLP recombinant protein. MMP9 was also involved in macrophage-induced fibroblast migration, which can be reversed by an inhibitor of MMP9. Collectively, these findings explained the underlying mechanisms of macrophage-promoted pulmonary fibrosis.
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Affiliation(s)
- Guanqun Li
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Fuquan Jin
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiangxia Du
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Peihua Luo
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
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20
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Lopes N, Charaix J, Cédile O, Sergé A, Irla M. Lymphotoxin α fine-tunes T cell clonal deletion by regulating thymic entry of antigen-presenting cells. Nat Commun 2018; 9:1262. [PMID: 29593265 PMCID: PMC5872006 DOI: 10.1038/s41467-018-03619-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 02/28/2018] [Indexed: 12/31/2022] Open
Abstract
Medullary thymic epithelial cells (mTEC) purge the T cell repertoire of autoreactive thymocytes. Although dendritic cells (DC) reinforce this process by transporting innocuous peripheral self-antigens, the mechanisms that control their thymic entry remain unclear. Here we show that mTEC-CD4+ thymocyte crosstalk regulates the thymus homing of SHPS-1+ conventional DCs (cDC), plasmacytoid DCs (pDC) and macrophages. This homing process is controlled by lymphotoxin α (LTα), which negatively regulates CCL2, CCL8 and CCL12 chemokines in mTECs. Consequently, Ltα-deficient mice have increased expression of these chemokines that correlates with augmented classical NF-κB subunits and increased thymic recruitment of cDCs, pDCs and macrophages. This enhanced migration depends mainly on the chemokine receptor CCR2, and increases thymic clonal deletion. Altogether, this study identifies a fine-tuning mechanism of T cell repertoire selection and paves the way for therapeutic interventions to treat autoimmune disorders.
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Affiliation(s)
- Noëlla Lopes
- Centre d'Immunologie de Marseille-Luminy, INSERM U1104, CNRS UMR7280, Aix-Marseille Université UM2, Marseille, 13288 cedex 09, France
| | - Jonathan Charaix
- Centre d'Immunologie de Marseille-Luminy, INSERM U1104, CNRS UMR7280, Aix-Marseille Université UM2, Marseille, 13288 cedex 09, France
| | - Oriane Cédile
- Institute of Molecular Medicine, Department of Neurobiology Research, University of Southern Denmark, J.B. Winsløwsvej 25, 5000, Odense C, Denmark
| | - Arnauld Sergé
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, INSERM U1068, CNRS UMR7258, Aix-Marseille Université UM105, 13273 cedex 09, Marseille, France
| | - Magali Irla
- Centre d'Immunologie de Marseille-Luminy, INSERM U1104, CNRS UMR7280, Aix-Marseille Université UM2, Marseille, 13288 cedex 09, France.
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21
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Ye S, Lawlor MA, Rivera-Reyes A, Egolf S, Chor S, Pak K, Ciotti GE, Lee AC, Marino GE, Shah J, Niedzwicki D, Weber K, Park PMC, Alam MZ, Grazioli A, Haldar M, Xu M, Perry JA, Qi J, Eisinger-Mathason TSK. YAP1-Mediated Suppression of USP31 Enhances NFκB Activity to Promote Sarcomagenesis. Cancer Res 2018; 78:2705-2720. [PMID: 29490948 DOI: 10.1158/0008-5472.can-17-4052] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/01/2018] [Accepted: 02/22/2018] [Indexed: 12/26/2022]
Abstract
To date, no consistent oncogenic driver mutations have been identified in most adult soft tissue sarcomas; these tumors are thus generally insensitive to existing targeted therapies. Here we investigated alternate mechanisms underlying sarcomagenesis to identify potential therapeutic interventions. Undifferentiated pleomorphic sarcoma (UPS) is an aggressive tumor frequently found in skeletal muscle where deregulation of the Hippo pathway and aberrant stabilization of its transcriptional effector yes-associated protein 1 (YAP1) increases proliferation and tumorigenesis. However, the downstream mechanisms driving this deregulation are incompletely understood. Using autochthonous mouse models and whole genome analyses, we found that YAP1 was constitutively active in some sarcomas due to epigenetic silencing of its inhibitor angiomotin (AMOT). Epigenetic modulators vorinostat and JQ1 restored AMOT expression and wild-type Hippo pathway signaling, which induced a muscle differentiation program and inhibited sarcomagenesis. YAP1 promoted sarcomagenesis by inhibiting expression of ubiquitin-specific peptidase 31 (USP31), a newly identified upstream negative regulator of NFκB signaling. Combined treatment with epigenetic modulators effectively restored USP31 expression, resulting in decreased NFκB activity. Our findings highlight a key underlying molecular mechanism in UPS and demonstrate the potential impact of an epigenetic approach to sarcoma treatment.Significance: A new link between Hippo pathway signaling, NFκB, and epigenetic reprogramming is highlighted and has the potential for therapeutic intervention in soft tissue sarcomas. Cancer Res; 78(10); 2705-20. ©2018 AACR.
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Affiliation(s)
- Shuai Ye
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Matthew A Lawlor
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Adrian Rivera-Reyes
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Shaun Egolf
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Susan Chor
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Koreana Pak
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Gabrielle E Ciotti
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Avery C Lee
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Gloria E Marino
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Jennifer Shah
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - David Niedzwicki
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Kristy Weber
- Department of Orthopedic Surgery, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Paul M C Park
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Md Zahidul Alam
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Alison Grazioli
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Malay Haldar
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Mousheng Xu
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Jennifer A Perry
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Jun Qi
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts.
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - T S Karin Eisinger-Mathason
- Abramson Family Cancer Research Institute, Department of Pathology & Laboratory Medicine, Penn Sarcoma Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
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22
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Xu M, Yin L, Cai Y, Hu Q, Huang J, Ji Q, Hu Y, Huang W, Liu F, Shi S, Deng X. Epigenetic regulation of integrin β6 transcription induced by TGF-β1 in human oral squamous cell carcinoma cells. J Cell Biochem 2018; 119:4193-4204. [PMID: 29274289 DOI: 10.1002/jcb.26642] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 12/20/2017] [Indexed: 12/14/2022]
Abstract
Overexpression of integrin αvβ6 is believed to play an important role in the invasion and metastasis of oral squamous cell carcinoma (OSCC). However, little is known about the molecular mechanisms leading to αvβ6 upregulation in OSCC. As the integrin β6 (ITGB6) is the only partner with αv, the expression of αvβ6 is dependent on ITGB6, it is, therefore, pivotal to investigate the mechanisms underlying ITGB6 overexpression in OSCC. We previously reported the cloning and characterization of human ITGB6 gene. In the current study, we further investigated the molecular mechanisms of ITGB6 expression and the upregulation by carcinogenesis related cytokine-transforming growth factor-β1 (TGF-β1) in OSCC cells. We first demonstrated that TGF-β1 can induce ITGB6 mRNA and protein express in a time and concentration dependent manner, and the induced-ITGB6 mRNA was not due to increase the mRNA stability, but regulated at transcriptional level. By using a luciferase reporter assay, site-mutation, RNA interference, and chromatin immunoprecipitation assay, we revealed for the first time that JunB, a member of the activator protein-1 (AP-1) family, is involved in the positive regulation to the ITGB6 transcription induced by TGF-β1 in OSCC cells. Furthermore, our data also demonstrated that histone acetyltransferase (HAT) CBP mediated histone H3 and H4 hyperacetylation, and RNA Polymerase II recruitment to ITGB6 promoter, facilitated the binding of transcription factor JunB to ITGB6 promoter after TGF-β1 stimulation. Collectively, these findings demonstrate that JunB and CBP-mediated histone hyperacetylation are responsible for TGF-β1 induced ITGB6 transcription in OSCC cells, suggesting that epigenetic mechanisms are responsible for the active transcription expression of ITGB6 induced by TGF-β1 in OSCC cells.
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Affiliation(s)
- Mingyan Xu
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Affiliated Stomatological Hospital of Xiamen Medical College, Fujian, China.,Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China.,Department of Stomatology, Xiamen Medical College, Xiamen, Fujian, China
| | - Liqin Yin
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Yihuang Cai
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Affiliated Stomatological Hospital of Xiamen Medical College, Fujian, China.,Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Qingwei Hu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Jie Huang
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Qing Ji
- Department of Stomatology, Xiamen Medical College, Xiamen, Fujian, China
| | - Yanping Hu
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Affiliated Stomatological Hospital of Xiamen Medical College, Fujian, China
| | - Wenxia Huang
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Affiliated Stomatological Hospital of Xiamen Medical College, Fujian, China
| | - Fan Liu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Songlin Shi
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Xiaoling Deng
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
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23
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Groves AM, Johnston CJ, Williams JP, Finkelstein JN. Role of Infiltrating Monocytes in the Development of Radiation-Induced Pulmonary Fibrosis. Radiat Res 2018; 189:300-311. [PMID: 29332538 DOI: 10.1667/rr14874.1] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Lung exposure to radiation induces an injury response that includes the release of cytokines and chemotactic mediators; these signals recruit immune cells to execute inflammatory and wound-healing processes. However, radiation alters the pulmonary microenvironment, dysregulating the immune responses and preventing a return to homeostasis. Importantly, dysregulation is observed as a chronic inflammation, which can progress into pneumonitis and promote pulmonary fibrosis; inflammatory monocytes, which are bone marrow derived and express CCR2, have been shown to migrate into the lung after radiation exposure. Although the extent to which recruited inflammatory monocytes contribute to radiation-induced pulmonary fibrosis has not been fully investigated, we hypothesize that its pathogenesis is reliant on this population. The CC chemokine ligand, CCL2, is a chemotactic mediator responsible for trafficking of CCR2+ inflammatory cells into the lung. Therefore, the contribution of this mediator to fibrosis development was analyzed. Interleukin (IL)-1β, a potent pro-inflammatory cytokine expressed during the radiation response, and its receptor, IL-1R1, were also evaluated. To this end, CCR2-/-, IL-1β-/- and IL-1R1-/- chimeric mice were generated and exposed to 12.5 Gy thoracic radiation, and their response was compared to wild-type (C57BL/6) syngeneic controls. Fibrotic foci were observed in the periphery of the lungs of C57 syngeneic mice and CCR2-/- recipient mice that received C57 bone marrow (C57 > CCR2-/-) by 16 and 12 weeks after irradiation, respectively. In contrast, in the mice that had received bone marrow lacking CCR2 (CCR2-/- > C57 and CCR2-/- syngeneic mice), no pulmonary fibrosis was observed at 22 weeks postirradiation. This observation correlated with decreased numbers of infiltrating and interstitial macrophages compared to controls, as well as reduced proportions of pro-inflammatory Ly6C+ macrophages observed at 12-18 weeks postirradiation, suggesting that CCR2+ macrophages contribute to radiation-induced pulmonary fibrosis. Interestingly, reduced proportions of CD206+ lung macrophages were also present at these time points in CCR2-/- chimeric mice, regardless of donor bone marrow type, suggesting that the phenotype of resident subsets may be influenced by CCR2. Furthermore, chimeras, in which either IL-1β was ablated from infiltrating cells or IL-1R1 from lung tissues, were also protected from fibrosis development, correlating with attenuated CCL2 production; these data suggest that IL-1β may influence chemotactic signaling after irradiation. Overall, our data suggest that CCR2+ infiltrating monocyte-derived macrophages may play a critical role in the development of radiation-induced pulmonary fibrosis.
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Affiliation(s)
- Angela M Groves
- Department of a Pediatrics M&D Neonatology, University of Rochester Medical Center, Rochester, New York
| | - Carl J Johnston
- Department of a Pediatrics M&D Neonatology, University of Rochester Medical Center, Rochester, New York.,b Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York
| | - Jacqueline P Williams
- b Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York
| | - Jacob N Finkelstein
- Department of a Pediatrics M&D Neonatology, University of Rochester Medical Center, Rochester, New York.,b Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York
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24
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Liew CW, Phuong T, Jones CB, Evans S, Hoot J, Weedling K, Ingram D, Nganga S, Kurt RA. A computational approach to unraveling TLR signaling in murine mammary carcinoma. Comput Biol Med 2017; 93:56-65. [PMID: 29277001 DOI: 10.1016/j.compbiomed.2017.12.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 12/16/2017] [Accepted: 12/16/2017] [Indexed: 11/27/2022]
Abstract
We developed an agent-based model to simulate a signaling cascade which allowed us to focus on the behavior of each class of agents independently of the other classes except when they were in physical contact. A critical piece was the ratio of the populations of agents that interact with one another, not their absolute values. This ratio reflects the effects of the density of each agent in the biological cascade as well as their size and velocity. Although the system can be used for any signaling cascade in any cell type, to validate the system we modeled Toll-like receptor (TLR) signaling in two very different types of cells; tumor cells and white blood cells. The iterative process of using experimental data to improve a computational model, and using predictions from the model to design additional experiments strengthened our understanding of how TLR signaling differs between normal white blood cells and tumor cells. The model and experimental data showed that some of the differences between the tumor cells and normal white blood cells were related to NFκB and TAB3 levels, and also suggested that tumor cells lacked IRAKM-dependent feedback inhibition as a negative regulator of TLR signaling. Finally, we found that these different cell types had distinctly different responses when exposed to two signals indicating that a more biologically relevant model and experimental system should address activation of multiple interconnected signaling cascades, the complexity of which further reinforces the need for a combined computational and molecular approach.
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Affiliation(s)
- Chun Wai Liew
- Department of Computer Science, Lafayette College, Easton, PA 18042, USA
| | - Tiffany Phuong
- Department of Biology, Lafayette College, Easton, PA 18042, USA
| | - Carli B Jones
- Department of Biology, Lafayette College, Easton, PA 18042, USA
| | - Samantha Evans
- Department of Biology, Lafayette College, Easton, PA 18042, USA
| | - Justin Hoot
- Department of Biology, Lafayette College, Easton, PA 18042, USA
| | | | - Damarcus Ingram
- Department of Biology, Lafayette College, Easton, PA 18042, USA
| | - Stacy Nganga
- Department of Biology, Lafayette College, Easton, PA 18042, USA
| | - Robert A Kurt
- Department of Biology, Lafayette College, Easton, PA 18042, USA.
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25
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Deng X, Zhou X, Deng Y, Liu F, Feng X, Yin Q, Gu Y, Shi S, Xu M. Thrombin Induces CCL2 Expression in Human Lung Fibroblasts via p300 Mediated Histone Acetylation and NF-KappaB Activation. J Cell Biochem 2017; 118:4012-4019. [PMID: 28407300 DOI: 10.1002/jcb.26057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/11/2017] [Indexed: 02/05/2023]
Abstract
Thrombin has been shown to play a key role in lung diseases such as pulmonary fibrosis via the induction of fibrotic cytokine- chemokine (CC motif) ligand-2 (CCL2) expression. We previously reported that transcription factor nuclear factor-κB (NF-κB) is responsible for thrombin-induced CCL2 expression in human lung fibroblasts (HLFs). Here, we extended our study to investigate the epigenetic regulation mechanism for thrombin-induced CCL2 expression in HLFs. HLFs were cultured in F-12 medium. CCL2 protein and mRNA levels were detected by ELISA and quantitative real-time PCR, respectively. Histone, histone acetyltransferases, and NF-κB binding to CCL2 promoter were detected by ChIP assay. NF-κB activation was detected by Western blotting. We revealed that increased binding of histone acetyltransferase p300 and acetylated histone H3 and H4 to CCL2 promoter are responsible for thrombin induced CCL2 expression in HLF cells. In addition, p300 inhibition attenuates both thrombin induced-CCL2 expression and histone H3 and H4 acetylation in HLFs, suggesting that p300 is involved in thrombin-induced CCL2 expression via hyperacetylating histone H3 and H4. Our data further showed that p300 also regulates CCL2 expression via interaction with NF-κB p65, as depletion of p300 inhibits both NF-κB p65 activation and its binding to CCL2 promoter. The findings strongly suggest that epigenetic dysregulation and the interaction between histone acetyltransferase and transcription factor may be responsible for thrombin induced-CCL2 expression in HLFs. Increased understanding of the epigenetic mechanisms of CCL2 regulation may provide opportunities for identifying novel molecular targets for therapeutic purposes. J. Cell. Biochem. 118: 4012-4019, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiaoling Deng
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Xiaoqiong Zhou
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Yan Deng
- Department of Respiratory Medicine, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong Province, People's Republic of China
| | - Fan Liu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Xiaofan Feng
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Qi Yin
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Yinzhen Gu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Songlin Shi
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, 361102, Fujian Province, People's Republic of China
| | - Mingyan Xu
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Xiamen Medical College, Xiamen, 361000, Fujian Province, People's Republic of China
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26
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Li C, Yu Y, Li W, Liu B, Jiao X, Song X, Lv C, Qin S. Phycocyanin attenuates pulmonary fibrosis via the TLR2-MyD88-NF-κB signaling pathway. Sci Rep 2017; 7:5843. [PMID: 28725012 PMCID: PMC5517415 DOI: 10.1038/s41598-017-06021-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 06/07/2017] [Indexed: 12/21/2022] Open
Abstract
Our aim was to investigate the effects of phycocyanin (PC) on bleomycin (BLM)-induced pulmonary fibrosis (PF). In this study, C57 BL/6 wild-type (WT) mice and toll-like receptor (TLR) 2 deficient mice were treated with PC for 28 days following BLM exposure. Serum and lung tissues were collected on days 3, 7 and 28. Data shows PC significantly decreased the levels of hydroxyproline (HYP), vimentin, surfactant-associated protein C (SP-C), fibroblast specific protein-1 (S100A4) and α-smooth muscle actin (α-SMA) but dramatically increased E-cadherin and podoplanin (PDPN) expression on day 28. Moreover, PC greatly decreased the levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and myeloperoxidase (MPO) at the earlier time. Reduced expression of key genes in the TLR2 pathway was also detected. Compared with WT mice, TLR2-deficient mice exhibited less injury, and the protective effect of PC was partly diminished in this background. These data indicate the anti-fibrotic effects of PC may be mediated by reducing W/D ratio, MPO, IL-6, TNF-α, protecting type I alveolar epithelial cells, inhibiting fibroblast proliferation, attenuating epithelial-mesenchymal transitions (EMT) and reducing oxidative stress. The TLR2-MyD88-NF-κB pathway plays an important role in PC-mediated reduction in pulmonary fibrosis.
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Affiliation(s)
- Chengcheng Li
- Medicine and Pharmacy Research Center, Binzhou Medical University, Yantai, China
| | - Yan Yu
- Medicine and Pharmacy Research Center, Binzhou Medical University, Yantai, China
| | - Wenjun Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Bo Liu
- Medicine and Pharmacy Research Center, Binzhou Medical University, Yantai, China
| | - Xudong Jiao
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Xinyu Song
- Medicine and Pharmacy Research Center, Binzhou Medical University, Yantai, China
| | - Changjun Lv
- Department of Respiratory Medicine, Affiliated Hospital of Binzhou Medical University, Binzhou, China.
| | - Song Qin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
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27
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Zou K, Wang Y, Hu Y, Zheng L, Xu W, Li G. Specific tumor-derived CCL2 mediated by pyruvate kinase M2 in colorectal cancer cells contributes to macrophage recruitment in tumor microenvironment. Tumour Biol 2017; 39:1010428317695962. [PMID: 28347237 DOI: 10.1177/1010428317695962] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Development of colorectal cancer has been considered as a result of imbalance of pro- and anti-inflammatory intestinal microenvironment accompanied by macrophage recruitment. Despite macrophages are implicated in remodeling tumor microenvironment, the mechanism of macrophage recruitment is not fully elucidated yet. In this study, we reported clinical association of highly expressed pyruvate kinase M2 in colorectal cancer with macrophage attraction. The conditioned medium from Caco-2 and HT-29 cells with depleted pyruvate kinase M2 dramatically reduced macrophage recruitment, which is reversed by addition of, a critical chemotaxis factor to macrophage migration, rCCL2. Silencing of endogenous pyruvate kinase M2 markedly decreased CCL2 expression and secretion by real-time quantitative polymerase chain reaction and enzyme-linked immunosorbent assay. Endogenous pyruvate kinase M2 interacted with p65 and mediated nuclear factor-κB signaling pathway and mainly regulated phosphorylation of Ser276 on p65 nuclear factor-κB. In addition, inhibition of macrophage recruitment caused by pyruvate kinase M2 silencing was rescued by ectopic expression of p65. Interestingly, pyruvate kinase M2 highly expressed in colorectal cancer tissue, which is correction with macrophage distribution. Taken together, we revealed a novel mechanism of pyruvate kinase M2 in promoting colorectal cancer progression by recruitment of macrophages through p65 nuclear factor-κB-mediated expression of CCL2.
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Affiliation(s)
- Kejian Zou
- 1 Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.,2 Hainan General Hospital, Haikou, China
| | - Yaodong Wang
- 3 Traditional Chinese Medicine Hospital of Kunshan, Suzhou, China
| | - Yan Hu
- 2 Hainan General Hospital, Haikou, China
| | | | - Wanfu Xu
- 5 Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Guoxin Li
- 1 Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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28
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Nadeau-Vallée M, Chin PY, Belarbi L, Brien MÈ, Pundir S, Berryer MH, Beaudry-Richard A, Madaan A, Sharkey DJ, Lupien-Meilleur A, Hou X, Quiniou C, Beaulac A, Boufaied I, Boudreault A, Carbonaro A, Doan ND, Joyal JS, Lubell WD, Olson DM, Robertson SA, Girard S, Chemtob S. Antenatal Suppression of IL-1 Protects against Inflammation-Induced Fetal Injury and Improves Neonatal and Developmental Outcomes in Mice. THE JOURNAL OF IMMUNOLOGY 2017; 198:2047-2062. [PMID: 28148737 DOI: 10.4049/jimmunol.1601600] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 12/30/2016] [Indexed: 01/08/2023]
Abstract
Preterm birth (PTB) is commonly accompanied by in utero fetal inflammation, and existing tocolytic drugs do not target fetal inflammatory injury. Of the candidate proinflammatory mediators, IL-1 appears central and is sufficient to trigger fetal loss. Therefore, we elucidated the effects of antenatal IL-1 exposure on postnatal development and investigated two IL-1 receptor antagonists, the competitive inhibitor anakinra (Kineret) and a potent noncompetitive inhibitor 101.10, for efficacy in blocking IL-1 actions. Antenatal exposure to IL-1β induced Tnfa, Il6, Ccl2, Pghs2, and Mpges1 expression in placenta and fetal membranes, and it elevated amniotic fluid IL-1β, IL-6, IL-8, and PGF2α, resulting in PTB and marked neonatal mortality. Surviving neonates had increased Il1b, Il6, Il8, Il10, Pghs2, Tnfa, and Crp expression in WBCs, elevated plasma levels of IL-1β, IL-6, and IL-8, increased IL-1β, IL-6, and IL-8 in fetal lung, intestine, and brain, and morphological abnormalities: e.g., disrupted lung alveolarization, atrophy of intestinal villus and colon-resident lymphoid follicle, and degeneration and atrophy of brain microvasculature with visual evoked potential anomalies. Late gestation treatment with 101.10 abolished these adverse outcomes, whereas Kineret exerted only modest effects and no benefit for gestation length, neonatal mortality, or placental inflammation. In a LPS-induced model of infection-associated PTB, 101.10 prevented PTB, neonatal mortality, and fetal brain inflammation. There was no substantive deviation in postnatal growth trajectory or adult body morphometry after antenatal 101.10 treatment. The results implicate IL-1 as an important driver of neonatal morbidity in PTB and identify 101.10 as a safe and effective candidate therapeutic.
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Affiliation(s)
- Mathieu Nadeau-Vallée
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Peck-Yin Chin
- Department of Obstetrics and Gynecology, Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Lydia Belarbi
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Marie-Ève Brien
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Sheetal Pundir
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Martin H Berryer
- Department of Neurosciences, CHU Sainte-Justine Research Center, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Alexandra Beaudry-Richard
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Ankush Madaan
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - David J Sharkey
- Department of Obstetrics and Gynecology, Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Alexis Lupien-Meilleur
- Department of Neurosciences, CHU Sainte-Justine Research Center, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Xin Hou
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Christiane Quiniou
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Alexandre Beaulac
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Ines Boufaied
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Amarilys Boudreault
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Adriana Carbonaro
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Ngoc-Duc Doan
- Department of Chemistry, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Jean-Sebastien Joyal
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - William D Lubell
- Department of Chemistry, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - David M Olson
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada.,Department of Pediatrics, University of Alberta, Edmonton, Alberta T6G 2R3, Canada; and.,Department of Physiology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
| | - Sarah A Robertson
- Department of Obstetrics and Gynecology, Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia;
| | - Sylvie Girard
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada; .,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Sylvain Chemtob
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; .,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, University of Montreal, Montreal, Quebec H3T 1J4, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
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29
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Matsunaga N, Ikeda E, Kakimoto K, Watanabe M, Shindo N, Tsuruta A, Ikeyama H, Hamamura K, Higashi K, Yamashita T, Kondo H, Yoshida Y, Matsuda M, Ogino T, Tokushige K, Itcho K, Furuichi Y, Nakao T, Yasuda K, Doi A, Amamoto T, Aramaki H, Tsuda M, Inoue K, Ojida A, Koyanagi S, Ohdo S. Inhibition of G0/G1 Switch 2 Ameliorates Renal Inflammation in Chronic Kidney Disease. EBioMedicine 2016; 13:262-273. [PMID: 27745900 PMCID: PMC5264248 DOI: 10.1016/j.ebiom.2016.10.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 10/05/2016] [Accepted: 10/05/2016] [Indexed: 12/20/2022] Open
Abstract
Chronic kidney disease (CKD) is a global health problem, and novel therapies to treat CKD are urgently needed. Here, we show that inhibition of G0/G1 switch 2 (G0s2) ameliorates renal inflammation in a mouse model of CKD. Renal expression of chemokine (C-C motif) ligand 2 (Ccl2) was increased in response to p65 activation in the kidneys of wild-type 5/6 nephrectomy (5/6Nx) mice. Moreover, 5/6Nx Clk/Clk mice, which carry homozygous mutations in the gene encoding circadian locomotor output cycles kaput (CLOCK), did not exhibit aggravation of apoptosis or induction of F4/80-positive cells. The renal expression of G0s2 in wild-type 5/6Nx mice was important for the transactivation of Ccl2 by p65. These pathologies were ameliorated by G0s2 knockdown. Furthermore, a novel small-molecule inhibitor of G0s2 expression was identified by high-throughput chemical screening, and the inhibitor suppressed renal inflammation in 5/6Nx mice. These findings indicated that G0s2 inhibitors may have applications in the treatment of CKD.
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Affiliation(s)
- Naoya Matsunaga
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan; Department of Glocal Healthcare Science, Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Eriko Ikeda
- Department of Molecular Biology, Daiichi University of Pharmacy, Minami-ku, Fukuoka 815-8511, Japan
| | - Keisuke Kakimoto
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Miyako Watanabe
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Naoya Shindo
- Department of Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Akito Tsuruta
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hisako Ikeyama
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kengo Hamamura
- Department of Molecular Biology, Daiichi University of Pharmacy, Minami-ku, Fukuoka 815-8511, Japan
| | - Kazuhiro Higashi
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Tomohiro Yamashita
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Hideaki Kondo
- Center for Sleep Medicine, Saiseikai Nagasaki Hospital, Katafuchi, Nagasaki 850-0003, Japan
| | - Yuya Yoshida
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masaki Matsuda
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Ogino
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kazutaka Tokushige
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kazufumi Itcho
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Yoko Furuichi
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takaharu Nakao
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kaori Yasuda
- Cell-Innovator Inc., EC building, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Atsushi Doi
- Cell-Innovator Inc., EC building, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Toshiaki Amamoto
- NMedical Co. Ouryokukai, Chuo-ku, Nihombashi-Kayabacho, Tokyo 103-0025, Japan
| | - Hironori Aramaki
- Department of Molecular Biology, Daiichi University of Pharmacy, Minami-ku, Fukuoka 815-8511, Japan
| | - Makoto Tsuda
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kazuhide Inoue
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Akio Ojida
- Department of Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Satoru Koyanagi
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan; Department of Glocal Healthcare Science, Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Shigehiro Ohdo
- Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan.
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30
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Venkatadri R, Iyer AKV, Ramesh V, Wright C, Castro CA, Yakisich JS, Azad N. MnTBAP Inhibits Bleomycin-Induced Pulmonary Fibrosis by Regulating VEGF and Wnt Signaling. J Cell Physiol 2016; 232:506-516. [PMID: 27649046 DOI: 10.1002/jcp.25608] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 09/19/2016] [Indexed: 01/02/2023]
Abstract
Cellular oxidative stress is implicated not only in lung injury but also in contributing to the development of pulmonary fibrosis. We demonstrate that a cell-permeable superoxide dismutase (SOD) mimetic and peroxynitrite scavenger, manganese (III) tetrakis (4-benzoic acid) porphyrin chloride (MnTBAP) significantly inhibited bleomycin-induced fibrogenic effects both in vitro and in vivo. Further investigation into the underlying mechanisms revealed that MnTBAP targets canonical Wnt and non-canonical Wnt/Ca2+ signaling pathways, both of which were upregulated by bleomycin treatment. The effect of MnTBAP on canonical Wnt signaling was significant in vivo but inconclusive in vitro and the non-canonical Wnt/Ca2+ signaling pathway was observed to be the predominant pathway regulated by MnTBAP in bleomycin-induced pulmonary fibrosis. Furthermore, we show that the inhibitory effects of MnTBAP involve regulation of VEGF which is upstream of the Wnt signaling pathway. Overall, the data show that the superoxide scavenger MnTBAP attenuates bleomycin-induced pulmonary fibrosis by targeting VEGF and Wnt signaling pathways. J. Cell. Physiol. 232: 506-516, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Rajkumar Venkatadri
- Department of Pharmaceutical Sciences, Hampton University, Hampton, Virginia
| | | | - Vani Ramesh
- Department of Obstetrics and Gynecology, The Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk, Virginia
| | - Clayton Wright
- Department of Pharmaceutical Sciences, Hampton University, Hampton, Virginia
| | - Carlos A Castro
- Magee Women's Research Institute, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Juan S Yakisich
- Department of Pharmaceutical Sciences, Hampton University, Hampton, Virginia
| | - Neelam Azad
- Department of Pharmaceutical Sciences, Hampton University, Hampton, Virginia
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31
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Wilkinson RDA, Magorrian SM, Williams R, Young A, Small DM, Scott CJ, Burden RE. CCL2 is transcriptionally controlled by the lysosomal protease cathepsin S in a CD74-dependent manner. Oncotarget 2016; 6:29725-39. [PMID: 26358505 PMCID: PMC4745758 DOI: 10.18632/oncotarget.5065] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 08/14/2015] [Indexed: 01/15/2023] Open
Abstract
Cathepsins S (CatS) has been implicated in numerous tumourigenic processes and here we document for the first time its involvement in CCL2 regulation within the tumour microenvironment. Analysis of syngeneic tumours highlighted reduced infiltrating macrophages in CatS depleted tumours. Interrogation of tumours and serum revealed genetic ablation of CatS leads to the depletion of several pro-inflammatory chemokines, most notably, CCL2. This observation was validated in vitro, where shRNA depletion of CatS resulted in reduced CCL2 expression. This regulation is transcriptionally mediated, as evident from RT-PCR analysis and CCL2 promoter studies. We revealed that CatS regulation of CCL2 is modulated through CD74 (also known as the invariant chain), a known substrate of CatS and a mediator of NFkB activity. Furthermore, CatS and CCL2 show a strong clinical correlation in brain, breast and colon tumours. In summary, these results highlight a novel mechanism by which CatS controls CCL2, which may present a useful pharmacodynamic marker for CatS inhibition.
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Affiliation(s)
- Richard D A Wilkinson
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Sinead M Magorrian
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Rich Williams
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Andrew Young
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Donna M Small
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Christopher J Scott
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Roberta E Burden
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
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32
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Ting H, Deep G, Kumar S, Jain AK, Agarwal C, Agarwal R. Beneficial effects of the naturally occurring flavonoid silibinin on the prostate cancer microenvironment: role of monocyte chemotactic protein-1 and immune cell recruitment. Carcinogenesis 2016; 37:589-599. [PMID: 27207648 DOI: 10.1093/carcin/bgw039] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/29/2016] [Indexed: 01/09/2023] Open
Abstract
Tumor microenvironment plays an essential role in prostate carcinogenesis and offers novel opportunities to prevent and treat prostate cancer (PCA). Here, we investigated the ability of cancer-associated fibroblasts (CAFs) to promote PCA progression, and silibinin efficacy to target this response. We collected conditioned media from CAFs treated with vehicle or silibinin, and labeled as control conditioned media (CCM) or silibinin-treatment conditioned media (SBCM), respectively. Next, we characterized the effect of CCM and SBCM treatment in several PCA cell lines (RWPE-1, WPE-1 NA-22, WPE-1 NB-14 and PC3). Result showed that compared with SBCM, CCM significantly reduces E-cadherin expression and increases invasiveness and clonogenicity in PCA cells. Further molecular studies identified monocyte chemotactic protein-1 (MCP-1) as the key component of CCM that promotes PCA invasiveness, whereas silibinin treatment strongly reduced MCP-1 expression in CAFs by inhibiting the DNA-binding activity of MCP-1 transcriptional regulators-nuclear factor-kappaB and AP-1. In vivo, silibinin feeding (200mg/kg body weight) strongly reduced TRAMPC1 allografts growth (by 68%) in syngeneic C57Bl/6 mice. TRAMPC1 tumor analysis showed that silibinin reduced MCP-1 and CAFs' biomarkers (fibroblast activation protein, α-smooth muscle actin, transforming growth factor beta 2, vimentin etc.) and significantly modulated the recruitment of immune cells in the tumor microenvironment. Similar inhibitory effects of silibinin on MCP-1 and immune cells recruitment were also observed in TRAMP PCA tissues with reported silibinin efficacy. Overall, our data suggest that silibinin can target CAF-mediated invasiveness in PCA by inhibiting MCP-1 secretion. This, in turn, was associated with a reduction in immune cell recruitment in vivo along with a marked reduction in tumor growth.
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Affiliation(s)
- Harold Ting
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences and
| | - Gagan Deep
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences and.,University of Colorado Cancer Center, University of Colorado Denver Anschutz Medical Campus, 12850 East Montview Blvd, V20-2118, Box C238, Aurora, CO 80045, USA
| | - Sushil Kumar
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences and
| | - Anil K Jain
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences and
| | - Chapla Agarwal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences and.,University of Colorado Cancer Center, University of Colorado Denver Anschutz Medical Campus, 12850 East Montview Blvd, V20-2118, Box C238, Aurora, CO 80045, USA
| | - Rajesh Agarwal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences and.,University of Colorado Cancer Center, University of Colorado Denver Anschutz Medical Campus, 12850 East Montview Blvd, V20-2118, Box C238, Aurora, CO 80045, USA
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33
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Upregulation of CCL2 via ATF3/c-Jun interaction mediated the Bortezomib-induced peripheral neuropathy. Brain Behav Immun 2016; 53:96-104. [PMID: 26554515 DOI: 10.1016/j.bbi.2015.11.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/27/2015] [Accepted: 11/07/2015] [Indexed: 11/22/2022] Open
Abstract
Bortezomib (BTZ) is a frequently used chemotherapeutic drug for the treatment of refractory multiple myeloma and hematological neoplasms. The mechanism by which the administration of BTZ leads to painful peripheral neuropathy remains unclear. In present study, we found that application of BTZ at 0.4 mg/kg for consecutive 5 days significantly increased the expression of CCL2 in DRG, and intrathecal administration of neutralizing antibody against CCL2 inhibited the mechanical allodynia induced by BTZ. We also found an increased expression of c-Jun in DRG, and that inhibition of c-Jun signaling prevented the CCL2 upregulation and mechanical allodynia in the rats treated with BTZ. Furthermore, the results with luciferase assay in vitro and ChIP assay in vivo showed that c-Jun might be essential for BTZ-induced CCL2 upregulation via binding directly to the specific position of the ccl2 promoter. In addition, the present results showed that an upregulated expression of ATF3 was co-expressed with c-Jun in the DRG neurons, and the enhanced interaction between c-Jun and ATF3 was observed in DRG in the rats treated with BTZ. Importantly, pretreatment with ATF3 siRNA significantly inhibited the recruitment of c-Jun to the ccl2 promoter in the rats treated with BTZ. Taken together, these findings suggested that upregulation of CCL2 resulting from the enhanced interaction between c-Jun and ATF3 in DRG contributed to BTZ-induced mechanical allodynia.
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34
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Zang T, Broszczak DA, Broadbent JA, Cuttle L, Lu H, Parker TJ. The biochemistry of blister fluid from pediatric burn injuries: proteomics and metabolomics aspects. Expert Rev Proteomics 2015; 13:35-53. [PMID: 26581649 DOI: 10.1586/14789450.2016.1122528] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Burn injury is a prevalent and traumatic event for pediatric patients. At present, the diagnosis of burn injury severity is subjective and lacks a clinically relevant quantitative measure. This is due in part to a lack of knowledge surrounding the biochemistry of burn injuries and that of blister fluid. A more complete understanding of the blister fluid biochemistry may open new avenues for diagnostic and prognostic development. Burn insult induces a highly complex network of signaling processes and numerous changes within various biochemical systems, which can ultimately be examined using proteome and metabolome measurements. This review reports on the current understanding of burn wound biochemistry and outlines a technical approach for 'omics' profiling of blister fluid from burn wounds of differing severity.
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Affiliation(s)
- Tuo Zang
- a Tissue Repair and Regeneration Program , Institute of Health and Biomedical Innovation , Kelvin Grove , Australia.,b School of Biomedical Sciences , Queensland University of Technology , Brisbane , Australia.,c Wound Management Innovation Co-operative Research Centre , West End , Australia
| | - Daniel A Broszczak
- a Tissue Repair and Regeneration Program , Institute of Health and Biomedical Innovation , Kelvin Grove , Australia.,b School of Biomedical Sciences , Queensland University of Technology , Brisbane , Australia.,c Wound Management Innovation Co-operative Research Centre , West End , Australia
| | - James A Broadbent
- a Tissue Repair and Regeneration Program , Institute of Health and Biomedical Innovation , Kelvin Grove , Australia.,b School of Biomedical Sciences , Queensland University of Technology , Brisbane , Australia.,c Wound Management Innovation Co-operative Research Centre , West End , Australia
| | - Leila Cuttle
- a Tissue Repair and Regeneration Program , Institute of Health and Biomedical Innovation , Kelvin Grove , Australia.,b School of Biomedical Sciences , Queensland University of Technology , Brisbane , Australia.,d Centre for Children's Burns and Trauma Research , Queensland University of Technology, Institute of Health and Biomedical Innovation at the Centre for Children's Health Research , South Brisbane , Australia
| | - Haitao Lu
- a Tissue Repair and Regeneration Program , Institute of Health and Biomedical Innovation , Kelvin Grove , Australia.,b School of Biomedical Sciences , Queensland University of Technology , Brisbane , Australia
| | - Tony J Parker
- a Tissue Repair and Regeneration Program , Institute of Health and Biomedical Innovation , Kelvin Grove , Australia.,b School of Biomedical Sciences , Queensland University of Technology , Brisbane , Australia
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35
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Nadeau-Vallée M, Obari D, Quiniou C, Lubell WD, Olson DM, Girard S, Chemtob S. A critical role of interleukin-1 in preterm labor. Cytokine Growth Factor Rev 2015; 28:37-51. [PMID: 26684042 DOI: 10.1016/j.cytogfr.2015.11.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 10/24/2015] [Accepted: 11/03/2015] [Indexed: 12/16/2022]
Abstract
Preterm birth (PTB) is a leading cause of neonatal mortality and morbidity worldwide, and represents a heavy economic and social burden. Despite its broad etiology, PTB has been firmly linked to inflammatory processes. Pro-inflammatory cytokines are produced in gestational tissues in response to stressors and can prematurely induce uterine activation, which precedes the onset of preterm labor. Of all cytokines implicated, interleukin (IL)-1 has been largely studied, revealing a central role in preterm labor. However, currently approved IL-1-targeting therapies have failed to show expected efficacy in pre-clinical studies of preterm labor. Herein, we (a) summarize animal and human studies in which IL-1 or IL-1-targeting therapeutics are implicated with preterm labor, (b) focus on novel IL-1-targeting therapies and diagnostic tests, and (c) develop the case for commercialization and translation means to hasten their development.
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Affiliation(s)
- Mathieu Nadeau-Vallée
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Center, Montréal H3T 1C5, Canada; Department of Pharmacology, Université de Montréal, Montréal H3C 3J7, Canada
| | - Dima Obari
- Department of Pharmacology, Université de Montréal, Montréal H3C 3J7, Canada
| | - Christiane Quiniou
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Center, Montréal H3T 1C5, Canada
| | - William D Lubell
- Department of Chemistry, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - David M Olson
- Departments of Obstetrics and Gynecology, Pediatrics and Physiology, University of Alberta, Edmonton AB TG6 2S2, Canada
| | - Sylvie Girard
- Departments of Obstetrics and Gynecology, CHU Sainte-Justine Research Centre, Montréal H3T 1C5, Canada.
| | - Sylvain Chemtob
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Center, Montréal H3T 1C5, Canada.
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36
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Nadeau-Vallée M, Quiniou C, Palacios J, Hou X, Erfani A, Madaan A, Sanchez M, Leimert K, Boudreault A, Duhamel F, Rivera JC, Zhu T, Noueihed B, Robertson SA, Ni X, Olson DM, Lubell W, Girard S, Chemtob S. Novel Noncompetitive IL-1 Receptor-Biased Ligand Prevents Infection- and Inflammation-Induced Preterm Birth. THE JOURNAL OF IMMUNOLOGY 2015; 195:3402-15. [PMID: 26304990 DOI: 10.4049/jimmunol.1500758] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 07/22/2015] [Indexed: 11/19/2022]
Abstract
Preterm birth (PTB) is firmly linked to inflammation regardless of the presence of infection. Proinflammatory cytokines, including IL-1β, are produced in gestational tissues and can locally upregulate uterine activation proteins. Premature activation of the uterus by inflammation may lead to PTB, and IL-1 has been identified as a key inducer of this condition. However, all currently available IL-1 inhibitors are large molecules that exhibit competitive antagonism properties by inhibiting all IL-1R signaling, including transcription factor NF-κB, which conveys important physiological roles. We hereby demonstrate the efficacy of a small noncompetitive (all-d peptide) IL-1R-biased ligand, termed rytvela (labeled 101.10) in delaying IL-1β-, TLR2-, and TLR4-induced PTB in mice. The 101.10 acts without significant inhibition of NF-κB, and instead selectively inhibits IL-1R downstream stress-associated protein kinases/transcription factor c-jun and Rho GTPase/Rho-associated coiled-coil-containing protein kinase signaling pathways. The 101.10 is effective at decreasing proinflammatory and/or prolabor genes in myometrium tissue and circulating leukocytes in all PTB models independently of NF-κB, undermining NF-κB role in preterm labor. In this work, biased signaling modulation of IL-1R by 101.10 uncovers a novel strategy to prevent PTB without inhibiting NF-κB.
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Affiliation(s)
- Mathieu Nadeau-Vallée
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Christiane Quiniou
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Julia Palacios
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Xin Hou
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Atefeh Erfani
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Ankush Madaan
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Mélanie Sanchez
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Kelycia Leimert
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta TG6 2S2, Canada; Department of Pediatrics, University of Alberta, Edmonton, Alberta TG6 2S2, Canada; Department of Physiology, University of Alberta, Edmonton, Alberta TG6 2S2, Canada
| | - Amarilys Boudreault
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - François Duhamel
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - José Carlos Rivera
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Maisonneuve-Rosemont Hospital, Research Center, Montreal, Quebec H1T 2M4, Canada
| | - Tang Zhu
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Baraa Noueihed
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Sarah A Robertson
- Department of Obstetrics and Gynecology, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Xin Ni
- Department of Obstetrics and Gynecology, Second Military Medical University, Shanghai 200433, China
| | - David M Olson
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta TG6 2S2, Canada; Department of Pediatrics, University of Alberta, Edmonton, Alberta TG6 2S2, Canada; Department of Physiology, University of Alberta, Edmonton, Alberta TG6 2S2, Canada
| | - William Lubell
- Department of Chemistry, University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Sylvie Girard
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Obstetrics and Gynecology, CHU Sainte-Justine Research Centre, Montreal, Quebec H3T 1C5, Canada; and Department of Physiology, CHU Sainte-Justine Research Centre, Montreal, Quebec H3T 1C5, Canada
| | - Sylvain Chemtob
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; Maisonneuve-Rosemont Hospital, Research Center, Montreal, Quebec H1T 2M4, Canada;
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Lei K, Georgiou EX, Chen L, Yulia A, Sooranna SR, Brosens JJ, Bennett PR, Johnson MR. Progesterone and the Repression of Myometrial Inflammation: The Roles of MKP-1 and the AP-1 System. Mol Endocrinol 2015; 29:1454-67. [PMID: 26280733 DOI: 10.1210/me.2015-1122] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Progesterone (P4) maintains uterine quiescence during pregnancy and its functional withdrawal is associated with increased prostaglandin synthesis and the onset of labor. In primary human myometrial cells, the glucocorticoid receptor (GR) rather than the P4 receptor mediates P4 antagonism of IL-1β-induced cyclooxygenase-2 (COX-2) expression, the rate-limiting enzyme in prostaglandin synthesis. We now report that P4 also acts via GR to induce MAPK phosphatase (MKP)-1 and knockdown of MKP-1 impairs the ability of P4 to repress IL-1β-dependent COX-2 induction. Microarray analysis revealed that P4 repressed preferentially activator protein-1-responsive genes in response to IL-1β. Consistent with these observations, we found that the ability of P4 to reduce c-Jun activation was lost upon GR as well as MKP-1 knockdown. Interestingly, c-Jun levels in human myometrial cells declined upon GR and MKP-1 knockdown, which suggests the presence of an activator protein-1 feedback loop. This is supported by our observation that c-Jun levels declined after an initial rise in primary myometrial cells treated with phorbol 12-myrisatate 13-acetate, a potent activator of c-Jun N-terminal kinase. Finally, we show that MKP-1 is an intermediate in P4-mediated repression of some but not all IL-1β-responsive genes. For example, P4 repression of IL11 and IRAK3 was maintained upon MKP-1 knockdown. Taken together, the data show that P4 acts via GR to drive MKP-1 expression, which in turn inhibits IL-1β-dependent c-Jun activation and COX-2 expression.
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Affiliation(s)
- K Lei
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - E X Georgiou
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - L Chen
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - A Yulia
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - S R Sooranna
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - J J Brosens
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - P R Bennett
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
| | - M R Johnson
- Imperial College Parturition Research Group (K.L., E.X.G., L.C., A.Y., S.R.S., M.R.J.), Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom; Institute of Reproductive and Developmental Biology (KL.,. E.X.G., A.Y., S.R.S., P.R.B., M.R.J.), Hammersmith Hospital Campus, London W12 0NN, United Kingdom; Obstetrics Department (L.C.), First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, People's Republic of China; and Reproductive Health (J.J.B.), University of Warwick, Coventry CV4 7AL, United Kingdom
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Liu Y, Guo R, Hao G, Xiao J, Bao Y, Zhou J, Chen Q, Wei X. The expression profiling and ontology analysis of noncoding RNAs in peritoneal fibrosis induced by peritoneal dialysis fluid. Gene 2015; 564:210-9. [DOI: 10.1016/j.gene.2015.03.050] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 02/09/2023]
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Xu M, Chen X, Yin H, Yin L, Liu F, Fu Y, Yao J, Deng X. Cloning and characterization of the human integrin β6 gene promoter. PLoS One 2015; 10:e0121439. [PMID: 25816241 PMCID: PMC4376883 DOI: 10.1371/journal.pone.0121439] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 02/13/2015] [Indexed: 02/05/2023] Open
Abstract
The integrin β6 (ITGB6) gene, which encodes the limiting subunit of the integrin αvβ6 heterodimer, plays an important role in wound healing and carcinogenesis. The mechanism underlying ITGB6 regulation, including the identification of DNA elements and cognate transcription factors responsible for basic transcription of human ITGB6 gene, remains unknown. This report describes the cloning and characterization of the human ITGB6 promoter. Using 5'-RACE (rapid amplification of cDNA ends) analysis, the transcriptional initiation site was identified. Promoter deletion analysis identified and functionally validated a TATA box located in the region -24 to -18 base pairs upstream of the ITGB6 promoter. The regulatory elements for transcription of the ITGB6 gene were predominantly located -289 to -150 from the ITGB6 promoter and contained putative binding sites for transcription factors such as STAT3 and C/EBPα. Using chromatin immunoprecipitation assays, this study has demonstrated, for the first time, that transcription factors STAT3 and C/EBPα are involved in the positive regulation of ITGB6 transcription in oral squamous cell carcinoma cells. These findings have important implications for unraveling the mechanism of abnormal ITGB6 activation in tissue remodeling and tumorigenesis.
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Affiliation(s)
- Mingyan Xu
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Xiamen Stomatological Hospital, Fujian, China
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Xihe Chen
- Laboratory of Cell Senescence, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Hao Yin
- Laboratory of Cell Senescence, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Liqin Yin
- Laboratory of Cell Senescence, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Fan Liu
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
| | - Yucai Fu
- Laboratory of Cell Senescence, Shantou University Medical College, Shantou, Guangdong Province, China
| | - Jiangwu Yao
- Department of Oral Biology and Biomaterial, Xiamen Stomatological Research Institute, Xiamen Stomatological Hospital, Fujian, China
- * E-mail: (JY); (XD)
| | - Xiaoling Deng
- Department of Basic Medical Science, Xiamen University Medical College, Xiamen, Fujian, China
- * E-mail: (JY); (XD)
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Selinger C, Tisoncik-Go J, Menachery VD, Agnihothram S, Law GL, Chang J, Kelly SM, Sova P, Baric RS, Katze MG. Cytokine systems approach demonstrates differences in innate and pro-inflammatory host responses between genetically distinct MERS-CoV isolates. BMC Genomics 2014; 15:1161. [PMID: 25534508 PMCID: PMC4522970 DOI: 10.1186/1471-2164-15-1161] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 12/12/2014] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The recent emergence of a novel coronavirus in the Middle East (designated MERS-CoV) is a reminder of the zoonotic and pathogenic potential of emerging coronaviruses in humans. Clinical features of Middle East respiratory syndrome (MERS) include atypical pneumonia and progressive respiratory failure that is highly reminiscent of severe acute respiratory syndrome (SARS) caused by SARS-CoV. The host response is a key component of highly pathogenic respiratory virus infection. Here, we computationally analyzed gene expression changes in a human airway epithelial cell line infected with two genetically distinct MERS-CoV strains obtained from human patients, MERS-CoV SA 1 and MERS-CoV Eng 1. RESULTS Using topological techniques, including persistence homology and filtered clustering, we performed a comparative transcriptional analysis of human Calu-3 cell host responses to the different MERS-CoV strains, with MERS-CoV Eng 1 inducing early kinetic changes, between 3 and 12 hours post infection, compared to MERS-CoV SA 1. Robust transcriptional changes distinguished the two MERS-CoV strains predominantly at the late time points. Combining statistical analysis of infection and cytokine-stimulated Calu-3 transcriptomics, we identified differential innate responses, including up-regulation of extracellular remodeling genes following MERS-CoV Eng 1 infection and differential pro-inflammatory responses. CONCLUSIONS Through our genomics-based approach, we found topological differences in the kinetics and magnitude of the host response to MERS-CoV SA 1 and MERS-CoV Eng 1, with differential expression of innate immune and pro-inflammatory responsive genes as a result of IFN, TNF and IL-1α signaling. Predicted activation for STAT3 mediating gene expression relevant for epithelial cell-to-cell adherens and junction signaling in MERS-CoV Eng 1 infection suggest that these transcriptional differences may be the result of amino acid differences in viral proteins known to modulate innate immunity during MERS-CoV infection.
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Affiliation(s)
- Christian Selinger
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
| | - Jennifer Tisoncik-Go
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
| | - Vineet D Menachery
- Department of Epidemiology, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA.
| | - Sudhakar Agnihothram
- Department of Epidemiology, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA.
| | - G Lynn Law
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
| | - Jean Chang
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
| | - Sara M Kelly
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
| | - Pavel Sova
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
| | - Ralph S Baric
- Department of Epidemiology, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA.
| | - Michael G Katze
- Department of Microbiology, School of Medicine, University of Washington, Seattle, Washington, USA.
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Pugliese SC, Poth JM, Fini MA, Olschewski A, El Kasmi KC, Stenmark KR. The role of inflammation in hypoxic pulmonary hypertension: from cellular mechanisms to clinical phenotypes. Am J Physiol Lung Cell Mol Physiol 2014; 308:L229-52. [PMID: 25416383 DOI: 10.1152/ajplung.00238.2014] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Hypoxic pulmonary hypertension (PH) comprises a heterogeneous group of diseases sharing the common feature of chronic hypoxia-induced pulmonary vascular remodeling. The disease is usually characterized by mild to moderate pulmonary vascular remodeling that is largely thought to be reversible compared with the progressive irreversible disease seen in World Health Organization (WHO) group I disease. However, in these patients, the presence of PH significantly worsens morbidity and mortality. In addition, a small subset of patients with hypoxic PH develop "out-of-proportion" severe pulmonary hypertension characterized by pulmonary vascular remodeling that is irreversible and similar to that in WHO group I disease. In all cases of hypoxia-related vascular remodeling and PH, inflammation, particularly persistent inflammation, is thought to play a role. This review focuses on the effects of hypoxia on pulmonary vascular cells and the signaling pathways involved in the initiation and perpetuation of vascular inflammation, especially as they relate to vascular remodeling and transition to chronic irreversible PH. We hypothesize that the combination of hypoxia and local tissue factors/cytokines ("second hit") antagonizes tissue homeostatic cellular interactions between mesenchymal cells (fibroblasts and/or smooth muscle cells) and macrophages and arrests these cells in an epigenetically locked and permanently activated proremodeling and proinflammatory phenotype. This aberrant cellular cross-talk between mesenchymal cells and macrophages promotes transition to chronic nonresolving inflammation and vascular remodeling, perpetuating PH. A better understanding of these signaling pathways may lead to the development of specific therapeutic targets, as none are currently available for WHO group III disease.
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Affiliation(s)
- Steven C Pugliese
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Departments of Medicine and Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, Colorado;
| | - Jens M Poth
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Departments of Medicine and Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Mehdi A Fini
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Departments of Medicine and Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Andrea Olschewski
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria; and
| | - Karim C El Kasmi
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, University of Colorado Denver, School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| | - Kurt R Stenmark
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Departments of Medicine and Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
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Moore BB. Following the path of CCL2 from prostaglandins to periostin in lung fibrosis. Am J Respir Cell Mol Biol 2014; 50:848-52. [PMID: 24605795 DOI: 10.1165/rcmb.2014-0075ps] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Without question, the greatest and most humbling honor of my scientific career was to learn that I was nominated for the American Thoracic Society Recognition Award for Scientific Accomplishments. On the occasion of this award, as I look back on the progress made in the last 15 years, I am pleased by the scientific insights; however, I am also saddened that we still have no internationally recognized efficacious therapy. This perspective will highlight the areas my laboratory has addressed regarding the pathogenesis of idiopathic pulmonary fibrosis in hopes of identifying new therapeutic targets.
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Affiliation(s)
- Bethany B Moore
- Departments of Internal Medicine and Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan
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Morrison NA, Day CJ, Nicholson GC. Dominant negative MCP-1 blocks human osteoclast differentiation. J Cell Biochem 2014; 115:303-12. [PMID: 23996571 DOI: 10.1002/jcb.24663] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 08/27/2013] [Indexed: 01/13/2023]
Abstract
Human osteoclasts were differentiated using receptor activator of NFκB ligand (RANKL) and macrophage colony stimulating factor (M-CSF) from colony forming unit-granulocyte macrophage (CFU-GM) precursors of the myeloid lineage grown from umbilical cord blood. Gene expression profiling using quantitative polymerase chain reaction (Q-PCR) showed more than 1,000-fold induction of chemokine MCP-1 within 24 h of RANKL treatment. MCP-1 mRNA content exceeds that of other assayed chemokines (CCL1, 3, 4, and 5) at all time points up to day 14 of treatment. MCP-1 induction preceded peak induction of calcium signaling activator calmodulin 1 (CALM1) and transcription factors JUN and FOS, which were at 3 days. Key osteoclast related transcription factors NFATc1 and NFATc2 showed peak induction at 7 days, while marker genes for osteoclast function cathepsin K and tartrate resistance acid phosphatase (TRAP) were maximally induced at 14 days, corresponding with mature osteoclast function. To test whether the early and substantial peak in MCP-1 expression is part of human osteoclast differentiation events, a dominant negative inhibitor of MCP-1 (7ND) was added simultaneously with RANKL and M-CSF, resulting in blockade of CALM1, JUN and NFATc2 induction and strong inhibition of human osteoclast differentiation. These data show that a cascade of gene expression leading to osteoclast differentiation depends on intact early MCP-1 induction and signaling in human osteoclasts.
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Affiliation(s)
- Nigel A Morrison
- School of Medical Science, Griffith University Gold Coast Campus, Parklands Drive, Southport, Queensland, 4215, Australia
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Protective role of andrographolide in bleomycin-induced pulmonary fibrosis in mice. Int J Mol Sci 2013; 14:23581-96. [PMID: 24300094 PMCID: PMC3876064 DOI: 10.3390/ijms141223581] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/01/2013] [Accepted: 11/22/2013] [Indexed: 02/05/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic devastating disease with poor prognosis. Multiple pathological processes, including inflammation, epithelial mesenchymal transition (EMT), apoptosis, and oxidative stress, are involved in the pathogenesis of IPF. Recent findings suggested that nuclear factor-κB (NF-κB) is constitutively activated in IPF and acts as a central regulator in the pathogenesis of IPF. The aim of our study was to reveal the value of andrographolide on bleomycin-induced inflammation and fibrosis in mice. The indicated dosages of andrographolide were administered in mice with bleomycin-induced pulmonary fibrosis. On day 21, cell counts of total cells, macrophages, neutrophils and lymphocytes, alone with TNF-α in bronchoalveolar lavage fluid (BALF) were measured. HE staining and Masson’s trichrome (MT) staining were used to observe the histological alterations of lungs. The Ashcroft score and hydroxyproline content of lungs were also measured. TGF-β1 and α-SMA mRNA and protein were analyzed. Activation of NF-κB was determined by western blotting and electrophoretic mobility shift assay (EMSA). On day 21 after bleomycin stimulation, andrographolide dose-dependently inhibited the inflammatory cells and TNF-α in BALF. Meanwhile, our data demonstrated that the Ashcroft score and hydroxyproline content of the bleomycin-stimulated lung were reduced by andrographolide administration. Furthermore, andrographloide suppressed TGF-β1 and α-SMA mRNA and protein expression in bleomycin-induced pulmonary fibrosis. Meanwhile, andrographolide significantly dose-dependently inhibited the ratio of phospho-NF-κB p65/total NF-κB p65 and NF-κB p65 DNA binding activities. Our findings indicate that andrographolide compromised bleomycin-induced pulmonary inflammation and fibrosis possibly through inactivation of NF-κB. Andrographolide holds promise as a novel drug to treat the devastating disease of pulmonary fibrosis.
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