1
|
Wang H, Wang Z, Wang Z, Li X, Li Y, Yan N, Wu L, Liang Y, Wu J, Song H, Qu Q, Huang J, Chang C, Shen K, Chen X, Lu M. Decitabine induces IRF7-mediated immune responses in p53-mutated triple-negative breast cancer: a clinical and translational study. Front Med 2024; 18:357-374. [PMID: 38157193 DOI: 10.1007/s11684-023-1016-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 06/24/2023] [Indexed: 01/03/2024]
Abstract
p53 is mutated in half of cancer cases. However, no p53-targeting drugs have been approved. Here, we reposition decitabine for triple-negative breast cancer (TNBC), a subtype with frequent p53 mutations and extremely poor prognosis. In a retrospective study on tissue microarrays with 132 TNBC cases, DNMT1 overexpression was associated with p53 mutations (P = 0.037) and poor overall survival (OS) (P = 0.010). In a prospective DEciTabinE and Carboplatin in TNBC (DETECT) trial (NCT03295552), decitabine with carboplatin produced an objective response rate (ORR) of 42% in 12 patients with stage IV TNBC. Among the 9 trialed patients with available TP53 sequencing results, the 6 patients with p53 mutations had higher ORR (3/6 vs. 0/3) and better OS (16.0 vs. 4.0 months) than the patients with wild-type p53. In a mechanistic study, isogenic TNBC cell lines harboring DETECT-derived p53 mutations exhibited higher DNMT1 expression and decitabine sensitivity than the cell line with wild-type p53. In the DETECT trial, decitabine induced strong immune responses featuring the striking upregulation of the innate immune player IRF7 in the p53-mutated TNBC cell line (upregulation by 16-fold) and the most responsive patient with TNBC. Our integrative studies reveal the potential of repurposing decitabine for the treatment of p53-mutated TNBC and suggest IRF7 as a potential biomarker for decitabine-based treatments.
Collapse
Affiliation(s)
- Haoyu Wang
- Department of General Surgery, Comprehensive Breast Health Center, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Zhengyuan Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Zheng Wang
- Department of General Surgery, Comprehensive Breast Health Center, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xiaoyang Li
- Department of Hematology, Shanghai Institute of Hematology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Yuntong Li
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Ni Yan
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Lili Wu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Ying Liang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jiale Wu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Huaxin Song
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qing Qu
- Department of General Surgery, Comprehensive Breast Health Center, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jiahui Huang
- Department of General Surgery, Comprehensive Breast Health Center, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Chunkang Chang
- Department of Hematology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200025, China
| | - Kunwei Shen
- Department of General Surgery, Comprehensive Breast Health Center, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Xiaosong Chen
- Department of General Surgery, Comprehensive Breast Health Center, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Min Lu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| |
Collapse
|
2
|
Kashyap D, Rele S, Bagde PH, Saini V, Chatterjee D, Jain AK, Pandey RK, Jha HC. Comprehensive insight into altered host cell-signaling cascades upon Helicobacter pylori and Epstein-Barr virus infections in cancer. Arch Microbiol 2023; 205:262. [PMID: 37310490 DOI: 10.1007/s00203-023-03598-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/14/2023]
Abstract
Cancer is characterized by mutagenic events that lead to disrupted cell signaling and cellular functions. It is one of the leading causes of death worldwide. Literature suggests that pathogens, mainly Helicobacter pylori and Epstein-Barr virus (EBV), have been associated with the etiology of human cancer. Notably, their co-infection may lead to gastric cancer. Pathogen-mediated DNA damage could be the first and crucial step in the carcinogenesis process that modulates numerous cellular signaling pathways. Altogether, it dysregulates the metabolic pathways linked with cell growth, apoptosis, and DNA repair. Modulation in these pathways leads to abnormal growth and proliferation. Several signaling pathways such RTK, RAS/MAPK, PI3K/Akt, NFκB, JAK/STAT, HIF1α, and Wnt/β-catenin are known to be altered in cancer. Therefore, this review focuses on the oncogenic roles of H. pylori, EBV, and its associated signaling cascades in various cancers. Scrutinizing these signaling pathways is crucial and may provide new insights and targets for preventing and treating H. pylori and EBV-associated cancers.
Collapse
Affiliation(s)
- Dharmendra Kashyap
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Samiksha Rele
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Pranit Hemant Bagde
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Vaishali Saini
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | | | | | - Rajan Kumar Pandey
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177, Solna, Sweden
| | - Hem Chandra Jha
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India.
- Centre for Rural Development and Technology, Indian Institute of Technology Indore, Madhya Pradesh, 453552, Indore, India.
| |
Collapse
|
3
|
McDew-White M, Lee E, Premadasa LS, Alvarez X, Okeoma CM, Mohan M. Cannabinoids modulate the microbiota-gut-brain axis in HIV/SIV infection by reducing neuroinflammation and dysbiosis while concurrently elevating endocannabinoid and indole-3-propionate levels. J Neuroinflammation 2023; 20:62. [PMID: 36890518 PMCID: PMC9993397 DOI: 10.1186/s12974-023-02729-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/13/2023] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND Although the advent of combination anti-retroviral therapy (cART) has transformed HIV into a manageable chronic disease, an estimated 30-50% of people living with HIV (PLWH) exhibit cognitive and motor deficits collectively known as HIV-associated neurocognitive disorders (HAND). A key driver of HAND neuropathology is chronic neuroinflammation, where proinflammatory mediators produced by activated microglia and macrophages are thought to inflict neuronal injury and loss. Moreover, the dysregulation of the microbiota-gut-brain axis (MGBA) in PLWH, consequent to gastrointestinal dysfunction and dysbiosis, can lead to neuroinflammation and persistent cognitive impairment, which underscores the need for new interventions. METHODS We performed RNA-seq and microRNA profiling in basal ganglia (BG), metabolomics (plasma) and shotgun metagenomic sequencing (colon contents) in uninfected and SIV-infected rhesus macaques (RMs) administered vehicle (VEH/SIV) or delta-9-tetrahydrocannabinol (THC) (THC/SIV). RESULTS Long-term, low-dose THC reduced neuroinflammation and dysbiosis and significantly increased plasma endocannabinoid, endocannabinoid-like, glycerophospholipid and indole-3-propionate levels in chronically SIV-infected RMs. Chronic THC potently blocked the upregulation of genes associated with type-I interferon responses (NLRC5, CCL2, CXCL10, IRF1, IRF7, STAT2, BST2), excitotoxicity (SLC7A11), and enhanced protein expression of WFS1 (endoplasmic reticulum stress) and CRYM (oxidative stress) in BG. Additionally, THC successfully countered miR-142-3p-mediated suppression of WFS1 protein expression via a cannabinoid receptor-1-mediated mechanism in HCN2 neuronal cells. Most importantly, THC significantly increased the relative abundance of Firmicutes and Clostridia including indole-3-propionate (C. botulinum, C. paraputrificum, and C. cadaveris) and butyrate (C. butyricum, Faecalibacterium prausnitzii and Butyricicoccus pullicaecorum) producers in colonic contents. CONCLUSION This study demonstrates the potential of long-term, low-dose THC to positively modulate the MGBA by reducing neuroinflammation, enhancing endocannabinoid levels and promoting the growth of gut bacterial species that produce neuroprotective metabolites, like indole-3-propionate. The findings from this study may benefit not only PLWH on cART, but also those with no access to cART and more importantly, those who fail to suppress the virus under cART.
Collapse
Affiliation(s)
- Marina McDew-White
- Southwest National Primate Research Center, Texas Biomedical Research Institute, 8715 West Military Drive, San Antonio, TX, 78227-5302, USA
| | - Eunhee Lee
- Southwest National Primate Research Center, Texas Biomedical Research Institute, 8715 West Military Drive, San Antonio, TX, 78227-5302, USA
| | - Lakmini S Premadasa
- Southwest National Primate Research Center, Texas Biomedical Research Institute, 8715 West Military Drive, San Antonio, TX, 78227-5302, USA
| | - Xavier Alvarez
- Southwest National Primate Research Center, Texas Biomedical Research Institute, 8715 West Military Drive, San Antonio, TX, 78227-5302, USA
| | - Chioma M Okeoma
- Department of Pathology, Microbiology, and Immunology, New York Medical College, Valhalla, NY, 10595-1524, USA
| | - Mahesh Mohan
- Southwest National Primate Research Center, Texas Biomedical Research Institute, 8715 West Military Drive, San Antonio, TX, 78227-5302, USA.
| |
Collapse
|
4
|
Yu X, Zhang Q, Ding H, Wang P, Feng J. Plasma Non-transferrin-Bound Iron Could Enter into Mice Duodenum and Negatively Affect Duodenal Defense Response to Virus and Immune Responses. Biol Trace Elem Res 2023; 201:786-799. [PMID: 35294743 DOI: 10.1007/s12011-022-03200-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 03/10/2022] [Indexed: 01/21/2023]
Abstract
Plasma non-transferrin-bound iron (NTBI) exists when the plasma iron content exceeds the carrying capacity of transferrin and can be quickly cleared by the liver, pancreas, and other organs. However, whether it could enter the small intestine and its effects still remain unclear. Herein, these issues were explored. Mice were intravenously administrated of ferric citrate (treatment) or citrate acid (control) 10 min after the saturation of the transferrin. Two hours later, hepatic, duodenal, and jejunal iron content and distribution were measured and duodenal transcriptome sequencing was performed. Significant increase of duodenal and hepatic iron content was detected, indicating that plasma NTBI could be absorbed by the duodenum as well as the liver. A total of 103 differentially expressed genes were identified in the duodenum of mice in the treatment group compared to the control group. Gene Ontology (GO) functional analysis of these genes showed that they were mainly involved in defense response to virus and immune response. The results of Kyoto Encyclopedia of Genes and Genomes pathway (KEGG) analysis revealed that there were major changes in the hematopoietic cell lineage and some virus infection pathways between the two groups. Determination of 7 cytokines in the duodenum were further conducted, which demonstrated that the anti-inflammatory factors interferon (IL)-4 and IL-10 in the duodenum were significantly decreased after NTBI uptake. Our findings revealed that NTBI in plasma can enter the duodenum, which would change the duodenal hematopoietic cell lineage and have a negative impact on defense response to the virus and immune responses.
Collapse
Affiliation(s)
- Xiaonan Yu
- Key Laboratory of Animal Nutrition & Feed Science, Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Qian Zhang
- Key Laboratory of Animal Nutrition & Feed Science, Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Haoxuan Ding
- Key Laboratory of Animal Nutrition & Feed Science, Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Peng Wang
- Key Laboratory of Animal Nutrition & Feed Science, Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Jie Feng
- Key Laboratory of Animal Nutrition & Feed Science, Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, China.
| |
Collapse
|
5
|
Yin X, Rang X, Hong X, Zhou Y, Xu C, Fu J. Immune cells transcriptome-based drug repositioning for multiple sclerosis. Front Immunol 2022; 13:1020721. [PMID: 36341423 PMCID: PMC9630342 DOI: 10.3389/fimmu.2022.1020721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022] Open
Abstract
Objective Finding target genes and target pathways of existing drugs for drug repositioning in multiple sclerosis (MS) based on transcriptomic changes in MS immune cells. Materials and Methods Based on transcriptome data from Gene Expression Omnibus (GEO) database, differentially expressed genes (DEGs) in MS patients without treatment were identified by bioinformatics analysis according to the type of immune cells, as well as DEGs in MS patients before and after drug administration. Hub target genes of the drug for MS were analyzed by constructing the protein-protein interaction network, and candidate drugs targeting 2 or more hub target genes were obtained through the connectivity map (CMap) database and Drugbank database. Then, the enriched pathways of MS patients without treatment and the enriched pathways of MS patients before and after drug administration were intersected to obtain the target pathways of the drug for MS, and the candidate drugs targeting 2 or more target pathways were obtained through Kyoto Encyclopedia of Genes and Genomes (KEGG) database. Results We obtained 50 hub target genes for CD4+ T cells in Fingolimod for MS, 15 hub target genes for Plasmacytoid dendritic cells (pDCs) and 7 hub target genes for Peripheral blood mononuclear cells (PBMC) in interferon-β (IFN-β) for MS. 6 candidate drugs targeting two or more hub targets (Fostamatinib, Copper, Artenimol, Phenethyl isothiocyanate, Aspirin and Zinc) were obtained. In addition, we obtained 4 target pathways for CD19+ B cells and 15 target pathways for CD4+ T cells in Fingolimod for MS, 7 target pathways for pDCs and 6 target pathways for PBMC in IFN-β for MS, most of which belong to the immune system and viral infectious disease pathways. We obtained 69 candidate drugs targeting two target pathways. Conclusion We found that applying candidate drugs that target both the “PI3K-Akt signaling pathway” and “Chemokine signaling pathway” (e.g., Nemiralisib and Umbralisib) or applying tyrosine kinase inhibitors (e.g., Fostamatinib) may be potential therapies for the treatment of MS.
Collapse
Affiliation(s)
- Xinyue Yin
- Department of Neurology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xinming Rang
- Department of Neurology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiangxiang Hong
- Department of Neurology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yinglian Zhou
- Department of Neurology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chaohan Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
- *Correspondence: Jin Fu, ; Chaohan Xu,
| | - Jin Fu
- Department of Neurology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
- *Correspondence: Jin Fu, ; Chaohan Xu,
| |
Collapse
|
6
|
Sarry M, Vitour D, Zientara S, Bakkali Kassimi L, Blaise-Boisseau S. Foot-and-Mouth Disease Virus: Molecular Interplays with IFN Response and the Importance of the Model. Viruses 2022; 14:v14102129. [PMID: 36298684 PMCID: PMC9610432 DOI: 10.3390/v14102129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 11/18/2022] Open
Abstract
Foot-and-mouth disease (FMD) is a highly contagious viral disease of cloven-hoofed animals with a significant socioeconomic impact. One of the issues related to this disease is the ability of its etiological agent, foot-and-mouth disease virus (FMDV), to persist in the organism of its hosts via underlying mechanisms that remain to be elucidated. The establishment of a virus–host equilibrium via protein–protein interactions could contribute to explaining these phenomena. FMDV has indeed developed numerous strategies to evade the immune response, especially the type I interferon response. Viral proteins target this innate antiviral response at different levels, ranging from blocking the detection of viral RNAs to inhibiting the expression of ISGs. The large diversity of impacts of these interactions must be considered in the light of the in vitro models that have been used to demonstrate them, some being sometimes far from biological systems. In this review, we have therefore listed the interactions between FMDV and the interferon response as exhaustively as possible, focusing on both their biological effect and the study models used.
Collapse
Affiliation(s)
- Morgan Sarry
- UMR VIROLOGIE, INRAE, École Nationale Vétérinaire d’Alfort, ANSES Laboratoire de Santé Animale, Université Paris-Est, 94700 Maisons-Alfort, France
- AgroParisTech, 75005 Paris, France
- Correspondence: (M.S.); (S.B.-B.)
| | - Damien Vitour
- UMR VIROLOGIE, INRAE, École Nationale Vétérinaire d’Alfort, ANSES Laboratoire de Santé Animale, Université Paris-Est, 94700 Maisons-Alfort, France
| | - Stephan Zientara
- UMR VIROLOGIE, INRAE, École Nationale Vétérinaire d’Alfort, ANSES Laboratoire de Santé Animale, Université Paris-Est, 94700 Maisons-Alfort, France
| | - Labib Bakkali Kassimi
- UMR VIROLOGIE, INRAE, École Nationale Vétérinaire d’Alfort, ANSES Laboratoire de Santé Animale, Université Paris-Est, 94700 Maisons-Alfort, France
| | - Sandra Blaise-Boisseau
- UMR VIROLOGIE, INRAE, École Nationale Vétérinaire d’Alfort, ANSES Laboratoire de Santé Animale, Université Paris-Est, 94700 Maisons-Alfort, France
- Correspondence: (M.S.); (S.B.-B.)
| |
Collapse
|
7
|
Xia Y, Li J, Li S, Khodahemmati S, Ghaffar M, Chen S, Sheng W. Identification of pathways and genes in the process of E6/E7-induced carcinogenesis of esophageal epithelial cells. J Med Virol 2020; 92:3736-3742. [PMID: 31916268 DOI: 10.1002/jmv.25667] [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: 11/05/2019] [Accepted: 01/05/2020] [Indexed: 11/12/2022]
Abstract
Human papillomavirus (HPV) infection was associated with some carcinomas, especially malignant tumors in upper digestive tract, upper respiratory tract, and genitourinary system. The mechanism of the viral transformation of normal cells is still not very clear. To investigate the tumorigenesis of epithelial cells, E6/E7-induced malignant transformation model cells were used for expression profiling analysis by performing RNA expression microarray detection. Bioinformatics analysis was applied to investigate the cellular process changes along with the E6/E7 expression in SHEE cells. The differentially expressed genes were further grouped and uploaded for Search Tool for the Retrieval of Interacting Genes analysis. The protein-protein interaction results were visualized. The hub genes and their first-neighbors genes were selected, followed by gene ontology and Kyoto Encyclopedia of Genes and Genomes pathway analysis. The obtained results demonstrated that tumor-related biological processes began to emerge during the carcinogenesis process from 48th passage to 76th passage of SHEE cells after E6/E7 expression. Ten hub genes were identified and analyzed during the E6/E7-induced tumorigenesis. This study explores the gene expression network in the progressive transformation of immortalized esophageal epithelial cells induced by E6/E7 expression. Understanding the biological processes and hub genes that first appear during the transformation will provide some clues to the mechanism of E6/E7-induced carcinogenesis of esophageal epithelial cells.
Collapse
Affiliation(s)
- Yang Xia
- Beijing Key Laboratory of Environmental and Viral Oncology, Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
- School of Materials Science and Engineering, South China University of Technology, Guangdong, China
| | - Jintao Li
- Beijing Key Laboratory of Environmental and Viral Oncology, Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
| | - Shuying Li
- Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Preclinical and Basic Research on Chronic Diseases, North China University of Science and Technology, Hebei, China
| | - Sara Khodahemmati
- Beijing Key Laboratory of Environmental and Viral Oncology, Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
| | - Maliha Ghaffar
- Beijing Key Laboratory of Environmental and Viral Oncology, Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
- Department of Biology/Zoology, University of Okara, Okara, Pakistan
| | - Su Chen
- Hubei Key Laboratory of Medical Information Analysis & Tumor Diagnosis and Treatment, Hubei, China
| | - Wang Sheng
- Beijing Key Laboratory of Environmental and Viral Oncology, Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
| |
Collapse
|
8
|
Sayed IM. Hepatic Immune Response Against Hepatitis E Virus Genotype 1 Infection Among Animal Models. J Infect Dis 2020; 220:1082-1083. [PMID: 31063539 DOI: 10.1093/infdis/jiz233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 05/03/2019] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ibrahim M Sayed
- Microbiology and Immunology Department, Faculty of Medicine, Assiut University, Egypt.,Department of Pathology, School of Medicine, University of California, San Diego, La Jolla
| |
Collapse
|
9
|
Mao W, Ghasemzadeh A, Freeman ZT, Obradovic A, Chaimowitz MG, Nirschl TR, McKiernan E, Yegnasubramanian S, Drake CG. Immunogenicity of prostate cancer is augmented by BET bromodomain inhibition. J Immunother Cancer 2019; 7:277. [PMID: 31653272 PMCID: PMC6814994 DOI: 10.1186/s40425-019-0758-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 09/26/2019] [Indexed: 12/18/2022] Open
Abstract
Background Prostate cancer responds poorly to current immunotherapies. Epigenetic therapies such as BET Bromodomain inhibition can change the transcriptome of tumor cells, possibly making them more immunogenic and thus susceptible to immune targeting. Methods We characterized the effects of BET bromodomain inhibition using JQ1 on PD-L1 and HLA-ABC expression in two human prostate cell lines, DU145 and PC3. RNA-Seq was performed to assess changes on a genome-wide level. A cytotoxic T cell killing assay was performed in MC38-OVA cells treated with JQ1 to demonstrate increased immunogenicity. In vivo experiments in the Myc-Cap model were conducted to show the effects of JQ1 administration in concert with anti-CTLA-4 checkpoint blockade. Results Here, we show that targeting BET bromodomains using the small molecule inhibitor JQ1 decreased PD-L1 expression and mitigated tumor progression in prostate cancer models. Mechanistically, BET bromodomain inhibition increased MHC I expression and increased the immunogenicity of tumor cells. Transcriptional profiling showed that BET bromodomain inhibition regulates distinct networks of antigen processing and immune checkpoint molecules. In murine models, treatment with JQ1 was additive with anti-CTLA-4 immunotherapy, resulting in an increased CD8/Treg ratio. Conclusions BET Bromodomain inhibition can mediate changes in expression at a genome wide level in prostate cancer cells, resulting in an increased susceptibility to CD8 T cell targeting. These data suggest that combining BET bromodomain inhibition with immune checkpoint blockade may have clinical activity in prostate cancer patients.
Collapse
Affiliation(s)
- Wendy Mao
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.,Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Ali Ghasemzadeh
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.,Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Zachary T Freeman
- Unit for Laboratory Animal Medicine (ULAM), Michigan Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.,Rogel Cancer Center, Michigan Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Aleksandar Obradovic
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA.,Columbia University Systems Biology, Herbert Irving Cancer Research Center, Columbia University Medical Center, New York, NY, 10032, USA
| | - Matthew G Chaimowitz
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Thomas R Nirschl
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Emily McKiernan
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Srinivasan Yegnasubramanian
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Charles G Drake
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA. .,Department of Urology, Columbia University Medical Center, New York, NY, 10032, USA. .,Herbert Irving Comprehensive Cancer Center, Division of Hematology / Oncology, Columbia University Medical Center, 177 Fort Washington Avenue, Suite 6GN-435, New York, NY, 10032, USA.
| |
Collapse
|
10
|
A bioinformatic analysis identifies circadian expression of splicing factors and time-dependent alternative splicing events in the HD-MY-Z cell line. Sci Rep 2019; 9:11062. [PMID: 31363108 PMCID: PMC6667479 DOI: 10.1038/s41598-019-47343-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 07/15/2019] [Indexed: 12/22/2022] Open
Abstract
The circadian clock regulates key cellular processes and its dysregulation is associated to several pathologies including cancer. Although the transcriptional regulation of gene expression by the clock machinery is well described, the role of the clock in the regulation of post-transcriptional processes, including splicing, remains poorly understood. In the present work, we investigated the putative interplay between the circadian clock and splicing in a cancer context. For this, we applied a computational pipeline to identify oscillating genes and alternatively spliced transcripts in time-course high-throughput data sets from normal cells and tissues, and cancer cell lines. We investigated the temporal phenotype of clock-controlled genes and splicing factors, and evaluated their impact in alternative splice patterns in the Hodgkin Lymphoma cell line HD-MY-Z. Our data points to a connection between clock-controlled genes and splicing factors, which correlates with temporal alternative splicing in several genes in the HD-MY-Z cell line. These include the genes DPYD, SS18, VIPR1 and IRF4, involved in metabolism, cell cycle, apoptosis and proliferation. Our results highlight a role for the clock as a temporal regulator of alternative splicing, which may impact malignancy in this cellular model.
Collapse
|
11
|
Li J, Tian Y, Liu J, Wang C, Feng C, Wu H, Feng H. Lysine 39 of IKKε of black carp is crucial for its regulation on IRF7-mediated antiviral signaling. FISH & SHELLFISH IMMUNOLOGY 2018; 77:410-418. [PMID: 29635067 DOI: 10.1016/j.fsi.2018.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/28/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
Interferon regulatory factor 7 (IRF7) plays a crucial role in the interferon (IFN) signaling in mammals, in which it is activated by the TBK1/IKKε complex during host antiviral innate immune response. There are few reports about the relation between IRF7 and IKKε in teleost fishes. In this study, the IRF7 homologue (bcIRF7) of black carp (Mylopharyngodon Piceus) has been cloned and characterized. The transcription of bcIRF7 gene increased in host cells in response to the stimulation of LPS, poly (I:C) and viral infection. bcIRF7 migrated around 56 KDa in immunoblot assay and was identified as a predominantly cytosolic protein by immunofluorescent staining. bcIRF7 showed IFN-inducing ability in reporter assay and EPC cells expressing bcIRF7 showed enhanced antiviral ability against both grass carp reovirus (GCRV) and spring viremia of carp virus (SVCV). IKKε of black carp (bcIKKε) was found to be recruited into host innate immune response initiated by SVCV and GCRV in the previous work; in this paper, the kinase dead mutant of bcIKKε, bcIKKε-K39A was constructed and showed no IFN-inducing activity. The data of reporter assay and plaque assay demonstrated that bcIKKε but not bcIKKε-K39A obviously enhanced bcIRF7-mediated IFN production and antiviral activity. Our data support the conclusion that bcIKKε upregulates bcIRF7-mediated antiviral signaling, which most likely depends on its kinase activity.
Collapse
Affiliation(s)
- Jun Li
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Yu Tian
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; The Second Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Ji Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Chanyuan Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Chaoliang Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Hui Wu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Hao Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China.
| |
Collapse
|
12
|
Fragale A, Romagnoli G, Licursi V, Buoncervello M, Del Vecchio G, Giuliani C, Parlato S, Leone C, De Angelis M, Canini I, Toschi E, Belardelli F, Negri R, Capone I, Presutti C, Gabriele L. Antitumor Effects of Epidrug/IFNα Combination Driven by Modulated Gene Signatures in Both Colorectal Cancer and Dendritic Cells. Cancer Immunol Res 2017; 5:604-616. [PMID: 28615266 DOI: 10.1158/2326-6066.cir-17-0080] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/12/2017] [Accepted: 06/06/2017] [Indexed: 11/16/2022]
Abstract
Colorectal cancer results from the progressive accumulation of genetic and epigenetic alterations. IFN signaling defects play an important role in the carcinogenesis process, in which the inability of IFN transcription regulatory factors (IRF) to access regulatory sequences in IFN-stimulated genes (ISG) in tumors and in immune cells may be pivotal. We reported that low-dose combination of two FDA-approved epidrugs, azacytidine (A) and romidepsin (R), with IFNα2 (ARI) hampers the aggressiveness of both colorectal cancer metastatic and stem cells in vivo and triggers immunogenic cell death signals that stimulate dendritic cell (DC) function. Here, we investigated the molecular signals induced by ARI treatment and found that this drug combination increased the accessibility to regulatory sequences of ISGs and IRFs that were epigenetically silenced in both colorectal cancer cells and DCs. Likewise, specific ARI-induced histone methylation and acetylation changes marked epigenetically affected ISG promoters in both metastatic cancer cells and DCs. Analysis by ChIP-seq confirmed such ARI-induced epigenetically regulated IFN signature. The activation of this signal endowed DCs with a marked migratory capability. Our results establish a direct correlation between reexpression of silenced ISGs by epigenetic control and ARI anticancer activity and provide new knowledge for the development of innovative combined therapeutic strategies for colorectal cancer. Cancer Immunol Res; 5(7); 604-16. ©2017 AACR.
Collapse
Affiliation(s)
- Alessandra Fragale
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy.
| | - Giulia Romagnoli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Valerio Licursi
- Institute for System Analysis and Computer Science "Antonio Ruberti", Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Maria Buoncervello
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Giorgia Del Vecchio
- Department of Biology and Biotechnologies "C. Darwin," Sapienza University, Rome, Italy
| | - Caterina Giuliani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Stefania Parlato
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Celeste Leone
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Marta De Angelis
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Irene Canini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Elena Toschi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | | | - Rodolfo Negri
- Department of Biology and Biotechnologies "C. Darwin," Sapienza University, Rome, Italy.,Institute of Molecular Biology and Pathology, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Imerio Capone
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Carlo Presutti
- Department of Biology and Biotechnologies "C. Darwin," Sapienza University, Rome, Italy
| | - Lucia Gabriele
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy.
| |
Collapse
|
13
|
Costa AS, Agostini S, Guerini FR, Mancuso R, Zanzottera M, Ripamonti E, Racca V, Nemni R, Clerici M. Modulation of Immune Responses to Herpes Simplex Virus Type 1 by IFNL3 and IRF7 Polymorphisms: A Study in Alzheimer's Disease. J Alzheimers Dis 2017; 60:1055-1063. [PMID: 28984602 DOI: 10.3233/jad-170520] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Herpes simplex virus type 1 (HSV-1) has long been suspected to play a role in Alzheimer's disease (AD), the most common form of dementia. IFN-lambda (IFN-λ) is one of the key cytokine in innate antiviral defenses and, in particular, has an appreciable antiviral activity against HSV-1 infection. IFN-λ expression is regulated by the interaction between two different proteins: Mediator Complex 23 (MED23) and Interferon-Responsive Transcription Factor 7 (IRF7); single nucleotide polymorphisms (SNPs) in these genes as well as in IFNL3 were shown to be differently distributed in AD patients. In this study, allelic discrimination analysis for IFNL3 rs12979860, MED23 rs3756784, and IRF7 rs6598008, as well as IFN-λ serum concentration and anti-HSV-1 antibody (Ab) titers were performed in 79 AD patients, 57 mild cognitive impairment (MCI) individuals, and 81 healthy controls (HC) who were HSV-1-seropositive. Results showed that INF-λ serum concentration was increased in AD and MCI carrying the IFNL3 T allele compared to HC (AD versus HC: p = 0.014; MCI versus HC: p = 0.029), with the highest anti-HSV-1 Ab titers seen in AD patients carrying the IFNL3 CC genotype (p = 0.012 versus HC). Notably, anti-HSV-1 Ab titers were higher in AD and MCI individuals carrying the IRF7 AA genotype compared to HC (p = 0.018 for both). MED23 polymorphisms did not show any statistical association either with serum IFN-λ or with anti-HSV-1 Ab. Data herein suggest that the IFNL3 rs12979860 and IRF7 rs6598008 polymorphisms modulate immune responses against HSV-1 via their effect on the IFN-λ pathway. These results help to clarify the possible role of HSV-1 infection in AD pathogenesis.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Vittorio Racca
- Don Carlo Gnocchi Foundation - ONLUS, IRCCS, Milan, Italy
| | - Raffaello Nemni
- Don Carlo Gnocchi Foundation - ONLUS, IRCCS, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milano, Milano, Italy
| | - Mario Clerici
- Don Carlo Gnocchi Foundation - ONLUS, IRCCS, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milano, Milano, Italy
| |
Collapse
|
14
|
Ullah MO, Sweet MJ, Mansell A, Kellie S, Kobe B. TRIF-dependent TLR signaling, its functions in host defense and inflammation, and its potential as a therapeutic target. J Leukoc Biol 2016; 100:27-45. [PMID: 27162325 DOI: 10.1189/jlb.2ri1115-531r] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 04/04/2016] [Indexed: 12/16/2022] Open
Abstract
Toll/IL-1R domain-containing adaptor-inducing IFN-β (TRIF)-dependent signaling is required for TLR-mediated production of type-I IFN and several other proinflammatory mediators. Various pathogens target the signaling molecules and transcriptional regulators acting in the TRIF pathway, thus demonstrating the importance of this pathway in host defense. Indeed, the TRIF pathway contributes to control of both viral and bacterial pathogens through promotion of inflammatory mediators and activation of antimicrobial responses. TRIF signaling also has both protective and pathologic roles in several chronic inflammatory disease conditions, as well as an essential function in wound-repair processes. Here, we review our current understanding of the regulatory mechanisms that control TRIF-dependent TLR signaling, the role of the TRIF pathway in different infectious and noninfectious pathologic states, and the potential for manipulating TRIF-dependent TLR signaling for therapeutic benefit.
Collapse
Affiliation(s)
- M Obayed Ullah
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia
| | - Matthew J Sweet
- Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, Queensland, Australia; and
| | - Ashley Mansell
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Monash University, Melbourne, Victoria, Australia
| | - Stuart Kellie
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia
| | - Bostjan Kobe
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia;
| |
Collapse
|
15
|
Perrotti E, Marsili G, Sgarbanti M, Remoli AL, Fragale A, Acchioni C, Orsatti R, Battistini A. IRF-7: an antiviral factor and beyond. Future Virol 2013. [DOI: 10.2217/fvl.13.88] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This review will summarize main characteristics and functions of IRF-7. IRF-7 and the highly homologous IRF-3 are two members of the IRF family of transcription factors that have emerged as crucial regulators of type I interferon (IFN) in response to pathogenic infections downstream pathogen recognition receptors. IRF-7 is also part of a positive-feedback regulatory loop essential for sustained IFN responses. Thus, tight regulation of its expression and activity is necessary to balance IFN-mediated beneficial effects and unwanted pathological consequences of IFN overproduction. Its role as an antiviral factor independent of IFN expression, and its involvement in other cellular functions beyond antiviral functions, including regulation of oncogenesis and metabolism, underscore its important role in the regulation of cellular homeostasis.
Collapse
Affiliation(s)
- Edvige Perrotti
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Giulia Marsili
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Marco Sgarbanti
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Anna Lisa Remoli
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Alessandra Fragale
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Chiara Acchioni
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Roberto Orsatti
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Angela Battistini
- Department of Infectious, Parasitic & Immune-mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| |
Collapse
|
16
|
IRF7 regulates TLR2-mediated activation of splenic CD11c(hi) dendritic cells. PLoS One 2012; 7:e41050. [PMID: 22815909 PMCID: PMC3398003 DOI: 10.1371/journal.pone.0041050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 06/19/2012] [Indexed: 11/19/2022] Open
Abstract
Members of the Interferon Regulatory Factor (IRF) family of transcription factors play an essential role in the development and function of the immune system. Here we investigated the role of IRF7 in the functional activation of conventional CD11c(hi) splenic dendritic cells (cDCs) in vitro and in vivo. Using mice deficient in IRF7, we found that this transcription factor was dispensable for the in vivo development of cDC subsets in the spleen. However, IRF7-deficient cDCs showed enhanced activation in response to microbial stimuli, characterised by exaggerated expression of CD80, CD86 and MHCII upon TLR2 ligation in vitro. The hyper-responsiveness of Irf7(-/-) cDC to TLR ligation could not be reversed with exogenous IFNα, nor by co-culture with wild-type cDCs, suggesting an intrinsic defect due to IRF7-deficiency. Irf7(-/-) cDCs also had impaired capacity to produce IL-12p70 when stimulated ex vivo, instead producing elevated levels of IL-10 that impaired their capacity to drive Th1 responses. Finally, analysis of bone marrow microchimeric mice revealed that cDCs deficient in IRF7 were also hyper-responsive to TLR2-mediated activation in vivo. Our data suggest a previously unknown function for IRF7 as a component of the regulatory network associated with cDC activation and adds to the wide variety of situations in which these transcription factors play a role.
Collapse
|
17
|
Abstract
Interferon regulatory factor 7 (IRF7) was originally identified in the context of Epstein-Barr virus (EBV) infection, and has since emerged as the crucial regulator of type I interferons (IFNs) against pathogenic infections, which activate IRF7 by triggering signaling cascades from pathogen recognition receptors (PRRs) that recognize pathogenic nucleic acids. Moreover, IRF7 is a multifunctional transcription factor, underscored by the fact that it is associated with EBV latency, in which IRF7 is induced as well as activated by the EBV principal oncoprotein latent membrane protein-1 (LMP1). Aberrant production of type I IFNs is associated with many types of diseases such as cancers and autoimmune disorders. Thus, tight regulation of IRF7 expression and activity is imperative in dictating appropriate type I IFN production for normal IFN-mediated physiological functions. Posttranslational modifications have important roles in regulation of IRF7 activity, exemplified by phosphorylation, which is indicative of its activation. Furthermore, mounting evidence has shed light on the importance of regulatory ubiquitination in activation of IRF7. Albeit these exciting findings have been made in the past decade since its discovery, many questions related to IRF7 remain to be addressed.
Collapse
|
18
|
Hu G, Xia J, Lou H, Liu Q, Lin J, Yin X, Dong X. Cloning and expression analysis of interferon regulatory factor 7 (IRF-7) in turbot, Scophthalmus maximus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2011; 35:416-420. [PMID: 21147158 DOI: 10.1016/j.dci.2010.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Revised: 12/05/2010] [Accepted: 12/05/2010] [Indexed: 05/30/2023]
Abstract
Interferon regulatory factor (IRF) 7 is known as the master regulator of type I interferon (IFN)-dependent immune responses in mammals. In this study, the cDNA and genomic sequences of turbot (Scophthalmus maximus) IRF-7 (SmIRF-7) were cloned and found to encode a putative protein of 439 amino acids. The gene is composed of 10 exons and 9 introns similar to known IRF-7 genes of fish. The SmIRF-7 shows the highest amino acid identity of 49.0-80.3% to fish IRF-7 and possesses a DNA-binding domain (DBD), an IRF association domain (IAD) and a serine-rich domain (SRD) of vertebrate IRF-7. In addition, the tryptophan cluster of SmIRF-7 DBD consists of only four tryptophans, which is a characteristic unique to all fish IRF-7 members. The SmIRF-7 transcripts were expressed constitutively in all analyzed tissues of healthy turbot, with higher levels observed in immune relevant tissues. Gene expressions of SmIRF-7 and Mx were monitored over a 7-day time course by quantitative real time PCR in head kidney and muscle of turbot challenged with turbot reddish body iridovirus (TRBIV), which is a prevalent viral pathogens in farmed turbot in China. Both genes were up-regulated by TRBIV although their inducibility was much weaker in the muscle. The peak levels of SmIRF-7 transcripts were detected at day 2 post-infection in the two organs with a 12- and 4.5-fold increase, respectively. Further, the Mx showed two waves of induced expression and the maximum expression of SmIRF-7 arose earlier than the second wave of the Mx expression in both organs. These findings contribute to an understanding of functions of SmIRF-7 in antiviral response.
Collapse
Affiliation(s)
- Guobin Hu
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | | | | | | | | | | | | |
Collapse
|
19
|
Interferon regulatory factor 7 contributes to the control of Leishmania donovani in the mouse liver. Infect Immun 2010; 79:1057-66. [PMID: 21149596 DOI: 10.1128/iai.00633-10] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Optimal hepatic resistance to Leishmania donovani in mice requires the coordinated effort of a variety of leukocyte populations that together induce activation of local macrophages to a leishmanicidal state. Although nitric oxide and reactive oxygen intermediates are potent leishmanicidal effector molecules operating in the acquired phase of immunity, there have long been suggestions that other mechanisms of leishmanicidal activity exist. We recently discovered that Irf-7 regulates a novel innate leishmanicidal response in resident splenic macrophages that line the marginal zone. Here, we tested whether this mechanism also operates in Kupffer cells, the resident macrophage population of the liver and the major target for hepatic infection by L. donovani. Comparing the Kupffer cell responses in situ in B6 and B6.Irf-7(-/-) mice, we found no evidence that Irf-7 affected amastigote uptake or early survival. However, we did find that Irf-7-deficient mice had impaired acquired resistance to hepatic L. donovani infection. This phenotype was attributable to a reduction in the capacity of hepatic CD4(+) T cells, NK cells, and NKT cells to produce gamma interferon (IFN-γ) and also to defective induction of NOS2 in infected Kupffer cells. Our data therefore add interferon regulatory factor 7 (IRF-7) to the growing list of interferon regulatory factors that have effects on downstream events in the acquired cellular immune response to nonviral pathogens.
Collapse
|
20
|
Battistini A. Interferon regulatory factors in hematopoietic cell differentiation and immune regulation. J Interferon Cytokine Res 2010; 29:765-80. [PMID: 19929577 DOI: 10.1089/jir.2009.0030] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Members of the interferon regulatory factor (IRF) family are transcription factors implicated in the regulation of a variety of biological processes. Originally identified as intracellular mediators of the induction and biological activities of interferons, their central role in host resistance to pathogens has recently been confirmed by the recognition of their involvement in the regulation of gene expression in responses triggered by Toll-like receptors and other pattern recognition receptors (PRRs). Their function in regulating the development as well as the activity of hematopoietic cells puts them at the interface between innate and adaptive immune responses. IRFs also regulate cell growth and apoptosis in several cell types, thereby affecting susceptibility to and the progression of cancer. In this review the role of some members of the family more deeply involved in the differentiation of hematopoietic cells and in immune regulation is addressed, with a specific focus on T cells and dendritic cells.
Collapse
Affiliation(s)
- Angela Battistini
- Molecular Pathogenesis Unit, Department of Infectious, Parasitic, and Immune-Mediated Diseases, Istituto Superiore di Sanità, Rome 00161, Italy.
| |
Collapse
|
21
|
Ortis F, Naamane N, Flamez D, Ladrière L, Moore F, Cunha DA, Colli ML, Thykjaer T, Thorsen K, Ørntoft TF, Eizirik DL. Cytokines interleukin-1beta and tumor necrosis factor-alpha regulate different transcriptional and alternative splicing networks in primary beta-cells. Diabetes 2010; 59:358-74. [PMID: 19934004 PMCID: PMC2809955 DOI: 10.2337/db09-1159] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Cytokines contribute to pancreatic beta-cell death in type 1 diabetes. This effect is mediated by complex gene networks that remain to be characterized. We presently utilized array analysis to define the global expression pattern of genes, including spliced variants, modified by the cytokines interleukin (IL)-1beta + interferon (IFN)-gamma and tumor necrosis factor (TNF)-alpha + IFN-gamma in primary rat beta-cells. RESEARCH DESIGN AND METHODS Fluorescence-activated cell sorter-purified rat beta-cells were exposed to IL-1beta + IFN-gamma or TNF-alpha + IFN-gamma for 6 or 24 h, and global gene expression was analyzed by microarray. Key results were confirmed by RT-PCR, and small-interfering RNAs were used to investigate the mechanistic role of novel and relevant transcription factors identified by pathway analysis. RESULTS Nearly 16,000 transcripts were detected as present in beta-cells, with temporal differences in the number of genes modulated by IL-1beta + IFNgamma or TNF-alpha + IFN-gamma. These cytokine combinations induced differential expression of inflammatory response genes, which is related to differential induction of IFN regulatory factor-7. Both treatments decreased the expression of genes involved in the maintenance of beta-cell phenotype and growth/regeneration. Cytokines induced hypoxia-inducible factor-alpha, which in this context has a proapoptotic role. Cytokines also modified the expression of >20 genes involved in RNA splicing, and exon array analysis showed cytokine-induced changes in alternative splicing of >50% of the cytokine-modified genes. CONCLUSIONS The present study doubles the number of known genes expressed in primary beta-cells, modified or not by cytokines, and indicates the biological role for several novel cytokine-modified pathways in beta-cells. It also shows that cytokines modify alternative splicing in beta-cells, opening a new avenue of research for the field.
Collapse
Affiliation(s)
- Fernanda Ortis
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Najib Naamane
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Daisy Flamez
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Laurence Ladrière
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Fabrice Moore
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Daniel A. Cunha
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Maikel L. Colli
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Thomas Thykjaer
- CMO Aros Applied Biotechnology A/S, Science Park Skejby Brendstrupgaardsvej, Aarhus, Denmark
| | - Kasper Thorsen
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Torben F. Ørntoft
- CMO Aros Applied Biotechnology A/S, Science Park Skejby Brendstrupgaardsvej, Aarhus, Denmark
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Decio L. Eizirik
- Laboratory of Experimental Medicine, Université Libre de Bruxelles, Brussels, Belgium
- Corresponding author: Decio L. Eizirik,
| |
Collapse
|
22
|
Tourkova IL, Shurin GV, Ferrone S, Shurin MR. Interferon regulatory factor 8 mediates tumor-induced inhibition of antigen processing and presentation by dendritic cells. Cancer Immunol Immunother 2008; 58:567-74. [PMID: 18751977 DOI: 10.1007/s00262-008-0579-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2008] [Accepted: 08/14/2008] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Suppression of dendritic cells (DCs) is a crucial mechanism by which tumor cells escape immune recognition and elimination. We have recently reported that MHC class I antigen processing machinery (APM) component expression in human DCs is down-regulated by tumor-derived gangliosides. However, the molecular mechanisms underlying this abnormality were not identified. Thus, the aim of this work was to analyze the role of interferon regulatory factor 8 (IRF-8) in APM protein expression and the antigen presenting capacity of DCs developed in the tumor microenvironment. RESULTS We demonstrate that the expression of several MHC class I APM components, including delta, MB-1, LMP-10, ERp57, and tapasin, is significantly decreased in murine DCs generated in the presence of prostate cancer cells. APM component down-regulation was associated with decreased ability of DCs to present model antigen to antigen-specific T cells. Notable, impaired antigen-presenting activity of DCs co-cultured with tumor cells was accompanied by decreased levels of IRF-8. Transduction of DCs with the silencing RNA for the IRF-8 gene also led to reduced expression of APM components in DCs and decreased antigen presenting function. CONCLUSION Together, our data suggest that tumor-induced inhibition of antigen processing and presenting function of DCs is mediated by IRF-8, a member of the interferon regulatory factor family. These results provide a new molecular target for optimizing the generation of efficient DC vaccines for cancer therapy.
Collapse
Affiliation(s)
- Irina L Tourkova
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | | | | | | |
Collapse
|