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He HX, Guo HY, Liu BS, Zhang N, Zhu KC, Zhang DC. Two IFNa3s mediate the regulation of IRF9 in the process of infection with Streptococcus iniae in yellowfin seabream, Acanthopagrus latus (Hottuyn, 1782). DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 156:105167. [PMID: 38574830 DOI: 10.1016/j.dci.2024.105167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024]
Abstract
IRF9 can play an antibacterial role by regulating the type I interferon (IFN) pathway. Streptococcus iniae can cause many deaths of yellowfin seabream, Acanthopagrus latus in pond farming. Nevertheless, the regulatory mechanism of type I IFN signalling by A. latus IRF9 (AlIRF9) against S. iniae remains elucidated. In our study, AlIRF9 has a total cDNA length of 3200 bp and contains a 1311 bp ORF encoding a presumed 436 amino acids (aa). The genomic DNA sequence of AlIRF9 has nine exons and eight introns, and AlIRF9 was expressed in various tissues, containing the stomach, spleen, brain, skin, and liver, among which the highest expression was in the spleen. Moreover, AlIRF9 transcriptions in the spleen, liver, kidney, and brain were increased by S. iniae infection. By overexpression of AlIRF9, AlIRF9 is shown as a whole-cell distribution, mainly concentrated in the nucleus. Moreover, the promoter fragments of -415 to +192 bp and -311 to +196 bp were regarded as core sequences from two AlIFNa3s. The point mutation analyses verified that AlIFNa3 and AlIFNa3-like transcriptions are dependent on both M3 sites with AlIRF9. In addition, AlIRF9 could greatly reduce two AlIFNa3s and interferon signalling factors expressions. These results showed that in A. latus, both AlIFNa3 and AlIFNa3-like can mediate the regulation of AlIRF9 in the process of infection with S. iniae.
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Affiliation(s)
- Hong-Xi He
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China.
| | - Hua-Yang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, 510300, China; Sanya Tropical Fisheries Research Institute, Sanya, 510300, China.
| | - Bao-Suo Liu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, 510300, China; Sanya Tropical Fisheries Research Institute, Sanya, 510300, China.
| | - Nan Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, 510300, China; Sanya Tropical Fisheries Research Institute, Sanya, 510300, China.
| | - Ke-Cheng Zhu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, 510300, China; Sanya Tropical Fisheries Research Institute, Sanya, 510300, China.
| | - Dian-Chang Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, 510300, China; Sanya Tropical Fisheries Research Institute, Sanya, 510300, China.
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2
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Xiao ZX, Liang R, Olsen N, Zheng SG. Roles of IRF4 in various immune cells in systemic lupus erythematosus. Int Immunopharmacol 2024; 133:112077. [PMID: 38615379 DOI: 10.1016/j.intimp.2024.112077] [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: 03/01/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/16/2024]
Abstract
Interferon regulatory factor 4 (IRF4) is a member of IRF family of transcription factors which mainly regulates the transcription of IFN. IRF4 is restrictively expressed in immune cells such as T and B cells, macrophages, as well as DC. It is essential for the development and function of these cells. Since these cells take part in the homeostasis of the immune system and dysfunction of them contributes to the initiation and progress of systemic lupus erythematosus (SLE), the roles of IRF4 in the SLE development becomes an important topic. Here we systemically discuss the biological characteristics of IRF4 in various immune cells and analyze the pathologic effects of IRF4 alteration in SLE and the potential targeting therapeutics of SLE.
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Affiliation(s)
- Ze Xiu Xiao
- Department of Immunology, the School of Cell and Gene Therapy, Songjiang Research Institute and Songjiang Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 201600, China; Department of Clinical Immunology, the Third Affiliated Hospital at the Sun Yat-sen University, Guangzhou 510630, China
| | - Rongzhen Liang
- Department of Immunology, the School of Cell and Gene Therapy, Songjiang Research Institute and Songjiang Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
| | - Nancy Olsen
- Division of Rheumatology, Department of Medicine, Penn State College of Medicine, Hershey, PA 17033, United States
| | - Song Guo Zheng
- Department of Immunology, the School of Cell and Gene Therapy, Songjiang Research Institute and Songjiang Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 201600, China.
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Periyasamy T, Ming-Wei L, Velusamy S, Ahamed A, Khan JM, Pappuswamy M, Viswakethu V. Functional characterization of Malabar grouper (Epinephelus malabaricus) interferon regulatory factor 9 involved in antiviral response. Int J Biol Macromol 2024; 266:131282. [PMID: 38565369 DOI: 10.1016/j.ijbiomac.2024.131282] [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: 12/28/2023] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
IRF9 is a crucial component in the JAK-STAT pathway. IRF9 interacts with STAT1 and STAT2 to form IFN-I-stimulated gene factor 3 (ISGF3) in response to type I IFN stimulation, which promotes ISG transcription. However, the mechanism by which IFN signaling regulates Malabar grouper (Epinephelus malabaricus) IRF9 is still elusive. Here, we explored the nd tissue-specific mRNA distribution of the MgIRF9 gene, as well as its antiviral function in E. malabaricus. MgIRF9 encodes a protein of 438 amino acids with an open reading frame of 1317 base pairs. MgIRF9 mRNA was detected in all tissues of a healthy M. grouper, with the highest concentrations in the muscle, gills, and brain. It was significantly up-regulated by nervous necrosis virus infection and poly (I:C) stimulation. The gel mobility shift test demonstrated a high-affinity association between MgIRF9 and the promoter of zfIFN in vitro. In GK cells, grouper recombinant IFN-treated samples showed a significant response in ISGs and exhibited antiviral function. Subsequently, overexpression of MgIRF9 resulted in a considerable increase in IFN and ISGs mRNA expression (ADAR1, ADAR1-Like, and ADAR2). Co-immunoprecipitation studies demonstrated that MgIRF9 and STAT2 can interact in vivo. According to the findings, M. grouper IRF9 may play a role in how IFN signaling induces ISG gene expression in grouper species.
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Affiliation(s)
- Thirunavukkarasu Periyasamy
- Laboratory of Molecular Virology and Immunology, Department of Aquaculture, The College of Life Science, National Taiwan Ocean University, Keelung 202, Taiwan; Department of Biotechnology, Nehru Arts and Science College, Coimbatore 641105, Tamil Nadu, India.
| | - Lu Ming-Wei
- Laboratory of Molecular Virology and Immunology, Department of Aquaculture, The College of Life Science, National Taiwan Ocean University, Keelung 202, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Sharmila Velusamy
- Department of Biotechnology, Nehru Arts and Science College, Coimbatore 641105, Tamil Nadu, India
| | - Anis Ahamed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Javed Masood Khan
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Manikantan Pappuswamy
- Department of Life Sciences, CHRIST (Deemed to be University), Bangalore, Karnataka 560029, India
| | - Velavan Viswakethu
- Department of Biotechnology, Nehru Arts and Science College, Coimbatore 641105, Tamil Nadu, India
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Perevalova AM, Gulyaeva LF, Pustylnyak VO. Roles of Interferon Regulatory Factor 1 in Tumor Progression and Regression: Two Sides of a Coin. Int J Mol Sci 2024; 25:2153. [PMID: 38396830 PMCID: PMC10889282 DOI: 10.3390/ijms25042153] [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: 01/20/2024] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
IRF1 is a transcription factor well known for its role in IFN signaling. Although IRF1 was initially identified for its involvement in inflammatory processes, there is now evidence that it provides a function in carcinogenesis as well. IRF1 has been shown to affect several important antitumor mechanisms, such as induction of apoptosis, cell cycle arrest, remodeling of tumor immune microenvironment, suppression of telomerase activity, suppression of angiogenesis and others. Nevertheless, the opposite effects of IRF1 on tumor growth have also been demonstrated. In particular, the "immune checkpoint" molecule PD-L1, which is responsible for tumor immune evasion, has IRF1 as a major transcriptional regulator. These and several other properties of IRF1, including its proposed association with response and resistance to immunotherapy and several chemotherapeutic drugs, make it a promising object for further research. Numerous mechanisms of IRF1 regulation in cancer have been identified, including genetic, epigenetic, transcriptional, post-transcriptional, and post-translational mechanisms, although their significance for tumor progression remains to be explored. This review will focus on the established tumor-suppressive and tumor-promoting functions of IRF1, as well as the molecular mechanisms of IRF1 regulation identified in various cancers.
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Affiliation(s)
- Alina M. Perevalova
- Zelman Institute for the Medicine and Psychology, Novosibirsk State University, Pirogova Street, 1, Novosibirsk 630090, Russia; (A.M.P.)
- Federal Research Center of Fundamental and Translational Medicine, Timakova Street, 2/12, Novosibirsk 630117, Russia
| | - Lyudmila F. Gulyaeva
- Zelman Institute for the Medicine and Psychology, Novosibirsk State University, Pirogova Street, 1, Novosibirsk 630090, Russia; (A.M.P.)
- Federal Research Center of Fundamental and Translational Medicine, Timakova Street, 2/12, Novosibirsk 630117, Russia
| | - Vladimir O. Pustylnyak
- Zelman Institute for the Medicine and Psychology, Novosibirsk State University, Pirogova Street, 1, Novosibirsk 630090, Russia; (A.M.P.)
- Federal Research Center of Fundamental and Translational Medicine, Timakova Street, 2/12, Novosibirsk 630117, Russia
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Zeng J, Yao J, Zhou Y, Yu L, Zhang L, Wang C, Luo Y, Li Z, Xu B. Expression of interferon regulatory factor family and its prognostic value in acute myeloid leukemia. Future Oncol 2023; 19:2465-2479. [PMID: 38054394 DOI: 10.2217/fon-2023-0443] [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] [Indexed: 12/07/2023] Open
Abstract
Aim: To elucidate the clinicopathological and prognostic values of interferon regulatory factor (IRF) family genes in acute myeloid leukemia (AML). Patients & methods: Differential expression analysis and survival analysis from several reliable databases were conducted and further validated using patients with AML. Results: The expression level of IRF1/2/4/5/7/8/9 in patients with AML was upregulated, while IRF3/6 expression was downregulated. High IRF1/7/9 expression indicated a worse overall survival rate. Conclusion: Overexpression of IRF1/7/9 may be associated with poor survival in patients with AML, suggesting that the IRF family may be a promising therapeutic target.
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Affiliation(s)
- Jiawei Zeng
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, 351002, China
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
- The Graduate School of Fujian Medical University, Fuzhou, 351002, China
| | - Jingwei Yao
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
| | - Yong Zhou
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
| | - Lian Yu
- Department of Hematology & Rheumatology, Longyan First Hospital, Affiliated to Fujian Medical University, Longyan, 364000, China
| | - Li Zhang
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
| | - Caiyan Wang
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
| | - Yiming Luo
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
| | - Zhifeng Li
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
| | - Bing Xu
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, 351002, China
- Department of Hematology, the First Affiliated Hospital of Xiamen University & Institute of Hematology, School of Medicine, Xiamen University, 55 Zhenhai Road, Xiamen, 361003, China
- Key Laboratory for Diagnosis & Treatment of Hematological Malignancy of Xiamen, Xiamen, 361003, China
- The Graduate School of Fujian Medical University, Fuzhou, 351002, China
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6
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Wang G, Feng X, Ding J. Molecular basis for the functional roles of the multimorphic T95R mutation of IRF4 causing human autosomal dominant combined immunodeficiency. Structure 2023; 31:1441-1451.e3. [PMID: 37683642 DOI: 10.1016/j.str.2023.08.013] [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: 06/21/2023] [Revised: 08/03/2023] [Accepted: 08/14/2023] [Indexed: 09/10/2023]
Abstract
Interferon regulatory factor 4 (IRF4) is a transcription factor that regulates the development and function of immune cells. Recently, a new multimorphic mutation T95R was identified in the IRF4 DNA-binding domain (DBD) in patients with autosomal dominant combined immune deficiency. Here, we characterized the interactions of the wild-type IRF4-DBD (IRF4-DBDWT) and T95R mutant (IRF4-DBDT95R) with a canonical DNA sequence and several noncanonical DNA sequences. We found that compared to IRF4-DBDWT, IRF4-DBDT95R exhibits higher binding affinities for both canonical and noncanonical DNAs, with the highest preference for the noncanonical GATA sequence. The crystal structures of IRF4-DBDWT in complex with the GATA sequence and IRF4-DBDT95R in complexes with both canonical and noncanonical DNAs were determined, showing that the T95R mutation enhances the interactions of IRF4-DBDT95R with the canonical and noncanonical DNAs to achieve higher affinity and specificity. Collectively, our data provide the molecular basis for the gain-of-function and new function of IRF4T95R.
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Affiliation(s)
- Guanchao Wang
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Xueqian Feng
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Jianping Ding
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China; School of Life Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China.
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7
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Wang R, Liu X, Han Q, Wang X. Characterisation, evolution and expression analysis of the interferon regulatory factor (IRF) family from olive flounder (Paralichthys olivaceus) in response to Edwardsiella tarda infection and temperature stress. FISH & SHELLFISH IMMUNOLOGY 2023; 142:109115. [PMID: 37758096 DOI: 10.1016/j.fsi.2023.109115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/23/2023] [Accepted: 09/24/2023] [Indexed: 10/02/2023]
Abstract
Interferon regulatory factor (IRF) family involves in the transcriptional regulation of type I Interferons (IFNs) and IFN-stimulated genes (ISGs) and plays a critical role in cytokine signaling and immune response. However, systematic identification of the IRF gene family in teleost has been rarely reported. In this study, twelve IRF members, named PoIRF1, PoIRF2, PoIRF3, PoIRF4a, PoIRF4b, PoIRF5, PoIRF6, PoIRF7, PoIRF8, PoIRF9, PoIRF10 and PoIRF11, were identified from genome-wide data of olive flounder (Paralichthys olivaceus). Phylogenetic analysis indicated that PoIRFs could be classified into four clades, including IRF1 subfamily (PoIRF1, PoIRF11), IRF3 subfamily (PoIRF3, PoIRF7), IRF4 subfamily (PoIRF4a, PoIRF8, PoIRF9, PoIRF10) and IRF5 subfamily (PoIRF5, PoIRF6). They were evolutionarily related to their counterparts in other fish. Gene structure and motif analysis showed that PoIRFs protein sequences were highly conserved. Under normal physiological conditions, all PoIRFs were generally expressed in multiple developmental stages and healthy tissues. After E. tarda attack and temperature stress, twelve PoIRFs showed significant and different changes in mRNA levels. The expression of PoIRF1, PoIRF3, PoIRF4a, PoIRF5, PoIRF7, PoIRF8, PoIRF9, PoIRF10 and PoIRF11 could be markedly induced by E. tarda, indicating that they played a key role in the process of antibacterial immunity. Besides, temperature stress could significantly stimulate the expression of PoIRF3, PoIRF5, PoIRF6 and PoIRF7, indicating that they could transmit signals rapidly when the temperature changes. In conclusion, this study reported the molecular properties and expression analysis of PoIRFs, and explored their role in immune response, which laid a favorable foundation for further studies on the evolution and functional characteristics of the IRF family in teleost fish.
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Affiliation(s)
- Ruoxin Wang
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Xiumei Liu
- College of Life Sciences, Yantai University, Yantai, China.
| | - Qingxi Han
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Xubo Wang
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China; National Engineering Research Laboratory of Marine Biotechnology and Engineering, Ningbo University, China; Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo University, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China; Key Laboratory of Green Mariculture (Co-construction by Ministry and Province), Ministry of Agriculture and Rural, Ningbo University, China.
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8
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Thouenon R, Kracker S. Human inborn errors of immunity associated with IRF4. Front Immunol 2023; 14:1236889. [PMID: 37809068 PMCID: PMC10556498 DOI: 10.3389/fimmu.2023.1236889] [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: 06/08/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
The transcription factor interferon regulatory factor 4 (IRF4) belongs to the IRF family and has several important functions for the adaptive immune response. Mutations affecting IRF family members IRF1, IRF3, IRF7, IRF8, or IRF9 have been described in patients presenting with inborn errors of immunity (IEI) highlighting the importance of these factors for the cellular host defense against mycobacterial and/or viral infections. IRF4 deficiency and haploinsufficiency have been associated with IEI. More recently, two novel IRF4 disease-causing mechanisms have been described due to the characterization of IEI patients presenting with cellular immunodeficiency associated with agammaglobulinemia. Here, we review the phenotypes and physiopathological mechanisms underlying IEI of IRF family members and, in particular, IRF4.
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Affiliation(s)
- Romane Thouenon
- Université Paris Cité, Paris, France
- Laboratory of Human Lymphohematopoiesis, Imagine Institute, INSERM UMR, Paris, France
| | - Sven Kracker
- Université Paris Cité, Paris, France
- Laboratory of Human Lymphohematopoiesis, Imagine Institute, INSERM UMR, Paris, France
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9
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Zhao Q, Zhang R, Qiao C, Miao Y, Yuan Y, Zheng H. Ubiquitination network in the type I IFN-induced antiviral signaling pathway. Eur J Immunol 2023; 53:e2350384. [PMID: 37194705 DOI: 10.1002/eji.202350384] [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: 02/22/2023] [Revised: 04/14/2023] [Accepted: 05/16/2023] [Indexed: 05/18/2023]
Abstract
Type I IFN (IFN-I) is the body's first line of defense against pathogen infection. IFN-I can induce cellular antiviral responses and therefore plays a key role in driving antiviral innate and adaptive immunity. Canonical IFN-I signaling activates the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway, which induces the expression of IFN-stimulated genes and eventually establishes a complex antiviral state in the cells. Ubiquitin is a ubiquitous cellular molecule for protein modifications, and the ubiquitination modifications of protein have been recognized as one of the key modifications that regulate protein levels and/or signaling activation. Despite great advances in understanding the ubiquitination regulation of many signaling pathways, the mechanisms by which protein ubiquitination regulates IFN-I-induced antiviral signaling have not been explored until very recently. This review details the current understanding of the regulatory network of ubiquitination that critically controls the IFN-I-induced antiviral signaling pathway from three main levels, including IFN-I receptors, IFN-I-induced cascade signals, and effector IFN-stimulated genes.
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Affiliation(s)
- Qian Zhao
- International Institute of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, China
| | - Renxia Zhang
- International Institute of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, China
| | - Caixia Qiao
- International Institute of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, China
| | - Ying Miao
- International Institute of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, China
| | - Yukang Yuan
- International Institute of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, China
| | - Hui Zheng
- International Institute of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou, China
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10
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Guo HY, He HX, Liu BS, Zhang N, Zhu KC, Zhang DC. The regulatory mechanisms of IRF7 mediated by the type I IFN signalling pathway against Streptococcus iniae in yellowfin seabream, Acanthopagrus latus (Hottuyn, 1782). Int J Biol Macromol 2023; 247:125635. [PMID: 37399879 DOI: 10.1016/j.ijbiomac.2023.125635] [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: 05/14/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/05/2023]
Abstract
Interferon regulatory factor 7 (IRF7) regulates type I interferon (IFN) genes via combining to the ISRE region in the immune response against bacteria. Streptococcus iniae is one of the dominant pathogenic bacteria of yellowfin seabream, Acanthopagrus latus. However, the regulatory mechanisms of A. latus IRF7 (AlIRF7) mediated by the type I IFN signalling pathway against S. iniae was ambiguously. In the present study, IRF7, and two IFNa3s (IFNa3 and IFNa3-like) were authenticated from A. latus. The total length of AlIRF7 cDNA is 2142 bp, containing a 1314 bp open reading frame (ORF) encoding an inferred 437 amino acids (aa). Three typical regions, a serine-rich domain (SRD), a DNA-binding domain (DBD), and an IRF association domain (IAD), are conserved in AlIRF7. Furthermore, AlIRF7 is fundamentally expressed in various kinds of organs, with high levels in the spleen and liver. Additionally, S. iniae challenge promoted AlIRF7 expression in the spleen, liver, kidney, and brain. AlIRF7 is confirmed to be located at the nucleus and cytoplasm by overexpression of AlIRF7. Moreover, truncation mutation analyses shows that the regions, -821 bp to +192 bp and -928 bp to +196 bp, were known as core promoters from AlIFNa3 and AlIFNa3-like, respectively. The point mutation analyses and electrophoretic mobile shift assay (EMSA) verified that AlIFNa3 and AlIFNa3-like transcriptions are depended on the M2/5 and M2/3/4 binding sites with AlIRF7 regulation, respectively. Additionally, an overexpression experiment showed that AlIRF7 can dramatically decrease the mRNA levels of two AlIFNa3s and interferon signalling molecules. These results suggest that two IFNa3s may mediate the regulation of AlIRF7 in the immune responses of A. latus against S. iniae infection.
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Affiliation(s)
- Hua-Yang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Sanya Tropical Fisheries Research Institute, Sanya, Hainan Province, China
| | - Hong-Xi He
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300 Guangzhou, Guangdong Province, PR China
| | - Bao-Suo Liu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Sanya Tropical Fisheries Research Institute, Sanya, Hainan Province, China
| | - Nan Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Sanya Tropical Fisheries Research Institute, Sanya, Hainan Province, China
| | - Ke-Cheng Zhu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Sanya Tropical Fisheries Research Institute, Sanya, Hainan Province, China.
| | - Dian-Chang Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Sanya Tropical Fisheries Research Institute, Sanya, Hainan Province, China.
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11
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Brancato D, Coniglio E, Bruno F, Agostini V, Saccone S, Federico C. Forensic DNA Phenotyping: Genes and Genetic Variants for Eye Color Prediction. Genes (Basel) 2023; 14:1604. [PMID: 37628655 PMCID: PMC10454093 DOI: 10.3390/genes14081604] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/31/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
In recent decades, the use of genetic polymorphisms related to specific phenotypes, such as eye color, has greatly contributed to the development of the research field called forensic DNA phenotyping (FDP), enabling the investigators of crime cases to reduce the number of suspects, making their work faster and more precise. Eye color is a polygenic phenotype, and many genetic variants have been highlighted, with the major contributor being the HERC2-OCA2 locus, where many single nucleotide variations (SNPs) were identified. Interestingly, the HERC2-OCA2 locus, containing the intronic SNP rs12913832, the major eye color determinant, shows a high level of evolutionary conservation across many species of vertebrates. Currently, there are some genetic panels to predict eye color by genomic DNA analysis, even if the exact role of the SNP variants in the formation of eye color is still poorly understood, with a low level of predictivity in the so-called intermediate eye color. Many variants in OCA2, HERC2, and other genes lie in introns or correspond to synonymous variants, highlighting greater complexity in the mechanism of action of such genes than a simple missense variation. Here, we show the main genes involved in oculocutaneous pigmentation and their structural and functional features, as well as which genetic variants show the highest level of eye color predictivity in currently used FDP assays. Despite the great recent advances and impact of FDP in criminal cases, it is necessary to enhance scientific research to better understand the mechanism of action behind each genetic variant involved in eye color, with the goal of obtaining higher levels of prediction.
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Affiliation(s)
- Desiree Brancato
- Department Biological, Geological, Environmental Sciences, University of Catania, Via Androne 81, 95124 Catania, Italy; (D.B.); (E.C.); (F.B.); (C.F.)
| | - Elvira Coniglio
- Department Biological, Geological, Environmental Sciences, University of Catania, Via Androne 81, 95124 Catania, Italy; (D.B.); (E.C.); (F.B.); (C.F.)
| | - Francesca Bruno
- Department Biological, Geological, Environmental Sciences, University of Catania, Via Androne 81, 95124 Catania, Italy; (D.B.); (E.C.); (F.B.); (C.F.)
| | - Vincenzo Agostini
- Department Science and Technical Innovation, University of Eastern Piedmont, Viale Teresa Michel 11, 15121 Alessandria, Italy;
| | - Salvatore Saccone
- Department Biological, Geological, Environmental Sciences, University of Catania, Via Androne 81, 95124 Catania, Italy; (D.B.); (E.C.); (F.B.); (C.F.)
| | - Concetta Federico
- Department Biological, Geological, Environmental Sciences, University of Catania, Via Androne 81, 95124 Catania, Italy; (D.B.); (E.C.); (F.B.); (C.F.)
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12
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You Y, Grasso E, Alvero A, Condon J, Dimova T, Hu A, Ding J, Alexandrova M, Manchorova D, Dimitrova V, Liao A, Mor G. Twist1-IRF9 Interaction Is Necessary for IFN-Stimulated Gene Anti-Zika Viral Infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 210:1899-1912. [PMID: 37144865 PMCID: PMC10615665 DOI: 10.4049/jimmunol.2300081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/10/2023] [Indexed: 05/06/2023]
Abstract
An efficient immune defense against pathogens requires sufficient basal sensing mechanisms that can deliver prompt responses. Type I IFNs are protective against acute viral infections and respond to viral and bacterial infections, but their efficacy depends on constitutive basal activity that promotes the expression of downstream genes known as IFN-stimulated genes (ISGs). Type I IFNs and ISGs are constitutively produced at low quantities and yet exert profound effects essential for numerous physiological processes beyond antiviral and antimicrobial defense, including immunomodulation, cell cycle regulation, cell survival, and cell differentiation. Although the canonical response pathway for type I IFNs has been extensively characterized, less is known regarding the transcriptional regulation of constitutive ISG expression. Zika virus (ZIKV) infection is a major risk for human pregnancy complications and fetal development and depends on an appropriate IFN-β response. However, it is poorly understood how ZIKV, despite an IFN-β response, causes miscarriages. We have uncovered a mechanism for this function specifically in the context of the early antiviral response. Our results demonstrate that IFN regulatory factor (IRF9) is critical in the early response to ZIKV infection in human trophoblast. This function is contingent on IRF9 binding to Twist1. In this signaling cascade, Twist1 was not only a required partner that promotes IRF9 binding to the IFN-stimulated response element but also an upstream regulator that controls basal levels of IRF9. The absence of Twist1 renders human trophoblast cells susceptible to ZIKV infection.
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Affiliation(s)
- Yuan You
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
| | - Esteban Grasso
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
- School of Science, University of Buenos Aires, Intendente Guiraldes 2160, Buenos Aires, 1428
| | - Ayesha Alvero
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
| | - Jennifer Condon
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
| | - Tanya Dimova
- Institute of Biology and Immunology of Reproduction “Acad. K. Bratanov”, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Anna Hu
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
| | - Jiahui Ding
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
| | - Marina Alexandrova
- Institute of Biology and Immunology of Reproduction “Acad. K. Bratanov”, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Diana Manchorova
- Institute of Biology and Immunology of Reproduction “Acad. K. Bratanov”, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Violeta Dimitrova
- Institute of Biology and Immunology of Reproduction “Acad. K. Bratanov”, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Aihua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Gil Mor
- C. S Mott Center for Human Development, Wayne State University, 275 E Hancock St, Detroit, MI, 48093
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13
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Mantovani S, Oliviero B, Varchetta S, Renieri A, Mondelli MU. TLRs: Innate Immune Sentries against SARS-CoV-2 Infection. Int J Mol Sci 2023; 24:ijms24098065. [PMID: 37175768 PMCID: PMC10178469 DOI: 10.3390/ijms24098065] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been responsible for a devastating pandemic since March 2020. Toll-like receptors (TLRs), crucial components in the initiation of innate immune responses to different pathogens, trigger the downstream production of pro-inflammatory cytokines, interferons, and other mediators. It has been demonstrated that they contribute to the dysregulated immune response observed in patients with severe COVID-19. TLR2, TLR3, TLR4 and TLR7 have been associated with COVID-19 severity. Here, we review the role of TLRs in the etiology and pathogenesis of COVID-19, including TLR7 and TLR3 rare variants, the L412F polymorphism in TLR3 that negatively regulates anti-SARS-CoV-2 immune responses, the TLR3-related cellular senescence, the interaction of TLR2 and TLR4 with SARS-CoV-2 proteins and implication of TLR2 in NET formation by SARS-CoV-2. The activation of TLRs contributes to viral clearance and disease resolution. However, TLRs may represent a double-edged sword which may elicit dysregulated immune signaling, leading to the production of proinflammatory mediators, resulting in severe disease. TLR-dependent excessive inflammation and TLR-dependent antiviral response may tip the balance towards the former or the latter, altering the equilibrium that drives the severity of disease.
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Affiliation(s)
- Stefania Mantovani
- Department of Research, Division of Clinical Immunology-Infectious Diseases, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Barbara Oliviero
- Department of Research, Division of Clinical Immunology-Infectious Diseases, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Stefania Varchetta
- Department of Research, Division of Clinical Immunology-Infectious Diseases, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Alessandra Renieri
- Medical Genetics, University of Siena, 53100 Siena, Italy
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
- Genetica Medica, Azienda Ospedaliero-Universitaria Senese, 53100 Siena, Italy
| | - Mario U Mondelli
- Department of Research, Division of Clinical Immunology-Infectious Diseases, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
- Department of Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy
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14
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Sun Y, Cao Z, Zhang P, Wei C, Li J, Wu Y, Zhou Y. IFN regulatory factor 3 of golden pompano and its NLS domain are involved in antibacterial innate immunity and regulate the expression of type I interferon (IFNa3). Front Immunol 2023; 14:1128196. [PMID: 36817435 PMCID: PMC9933344 DOI: 10.3389/fimmu.2023.1128196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
Introduction The transcription factor interferon regulatory factor 3 (IRF3) plays an important role in host defence against viral infections. However, its role during bacterial infection in teleosts remains unclear. In the present study, we evaluated the antibacterial effects of Trachinotus ovatus IRF3 (TroIRF3) and how it regulates type I interferon (IFN). Methods Subcellular localisation experiments, overexpression, and quantitative real-time PCR (qRT-PCR) were performed to examine the nuclear localisation signal (NLS) of TroIRF3 and its role in the antibacterial regulatory function of TroIRF3. We assessed the binding activity of TroIRF3 to the IFNa3 promoter by luciferase reporter assay. Results and Discussion The results showed that TroIRF3 was constitutively expressed at high levels in the gill and liver. TroIRF3 was significantly upregulated and transferred from the cytoplasm to the nucleus after Vibrio harveyi infection. By overexpressing TroIRF3, the fish were able to inhibit the replication of V. harveyi, whereas knocking it down increased bacterial replication. Moreover, the overexpression of TroIRF3 increased type I interferon (IFNa3) production and the IFN signalling molecules. The NLS, which is from the 64-127 amino acids of TroIRF3, contains the basic amino acids KR74/75 and RK82/84. The results proved that NLS is required for the efficient nuclear import of TroIRF3 and that the NLS domain of TroIRF3 consists of the key amino acids KR74/75 and RK82/84. The findings also showed that NLS plays a key role in the antibacterial immunity and upregulation of TroIFNa3 induced by TroIRF3. Moreover, TroIRF3 induces TroIFNa3 promoter activity, whereas these effects are inhibited when the NLS domain is deficient. Overall, our results suggested that TroIRF3 is involved in the antibacterial immunity and regulation of type I IFN in T. ovatus and that the NLS of TroIRF3 is vital for IRF3-mediated antibacterial responses, which will aid in understanding the immune role of fish IRF3.
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Affiliation(s)
- Yun Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, China
| | - Zhenjie Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China
| | - Panpan Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, China
| | - Caoying Wei
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China
| | - Jianlong Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, China
| | - Ying Wu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China,*Correspondence: Ying Wu, ; Yongcan Zhou,
| | - Yongcan Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China,Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, China,*Correspondence: Ying Wu, ; Yongcan Zhou,
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15
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Phosphorylation of interferon regulatory factor 9 (IRF9). Mol Biol Rep 2023; 50:3909-3917. [PMID: 36662450 PMCID: PMC9852800 DOI: 10.1007/s11033-023-08253-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/04/2023] [Indexed: 01/21/2023]
Abstract
BACKGROUND IRF9 is a transcription factor that mediates the expression of interferon-stimulated genes (ISGs) through the Janus kinase-Signal transducer and activator of transcription (JAK-STAT) pathway. The JAK-STAT pathway is regulated through phosphorylation reactions, in which all components of the pathway are known to be phosphorylated except IRF9. The enigma surrounding IRF9 regulation by a phosphorylation event is intriguing. As IRF9 plays a major role in establishing an antiviral state in host cells, the topic of IRF9 regulation warrants deeper investigation. METHODS Initially, total lysates of 2fTGH and U2A cells (transfected with recombinant IRF9) were filter-selected and concentrated using phosphoprotein enrichment assay. The phosphoprotein state of IRF9 was further confirmed using Phos-tag™ assay. All protein expression was determined using Western blotting. Tandem mass spectrometry was conducted on immunoprecipitated IRF9 to identify the phosphorylated amino acids. Finally, site-directed mutagenesis was performed and the effects of mutated IRF9 on relevant ISGs (i.e., USP18 and Mx1) was evaluated using qPCR. RESULTS IRF9 is phosphorylated at S252 and S253 under IFNβ-induced condition and R242 under non-induced condition. Site-directed mutagenesis of S252 and S253 to either alanine or aspartic acid has a modest effect on the upregulation of USP18 gene-a negative regulator of type I interferon (IFN) response-but not Mx1 gene. CONCLUSION Our preliminary study shows that IRF9 is phosphorylated and possibly regulates USP18 gene expression. However, further in vivo studies are needed to determine the significance of IRF9 phosphorylation.
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Liang Y, Liu R, Zhang J, Chen Y, Shan S, Zhu Y, Yang G, Li H. Negative regulation of interferon regulatory factor 6 (IRF6) in interferon and NF-κB signalling pathways of common carp (Cyprinus carpio L.). BMC Vet Res 2022; 18:433. [PMID: 36503433 PMCID: PMC9743528 DOI: 10.1186/s12917-022-03538-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Interferon (IFN) regulatory factors (IRFs) is a kind of transcription factors, which play an important role in regulating the expression of type I IFN and related genes. In mammals, IRF6 is not relevant with IFN expression, while zebrafish IRF6 was reported to be a positive regulator of IFN expression and could be phosphorylated by both MyD88 and TBK1. However, the role of IRF6 in the immune response and IFN transcription of common carp is unknown. RESULTS In the present study, the cDNA of IRF6 gene (CcIRF6) was cloned from common carp using RACE technique, with a total length of 1905 bp, encoding 471 amino acid residues, which possesses two functional domains of DBD and IAD. Similarity analysis showed that CcIRF6 had more than 50% similarity with IRFs of other vertebrates, and had the highest similarity with grass carp and zebrafish, among which the DBD domain was much more conserved. The phylogenetic analysis showed that CcIRF6 is in the branch of Osteichthyes and has the closest relationship with grass carp. In healthy common carp, the CcIRF6 was expressed in all the examined tissues, with the highest level in the oral epithelium, and the lowest level in the head kidney. After intraperitoneal injection of poly(I:C) or Aeromonas hydrophila, the expression of CcIRF6 increased in spleen, head kidney, foregut and hindgut of common carp. Moreover, poly(I:C), LPS, PGN and flagellin induced the expression of CcIRF6 in peripheral leukocytes and head kidney leukocytes of common carp in vitro. In EPC cells, CcIRF6 inhibited the expression of some IFN-related genes and pro-inflammatory cytokines, and dual luciferase reporter assay showed that CcIRF6 reduced the activity of IFN and NF-κB reporter genes. CONCLUSIONS The present study suggests that CcIRF6 is involved in the antiviral and antibacterial immune response of common carp, and negatively regulate the expression of IFN and NF-κB signalling pathways, which provides a theoretical basis for the study and prevention of fish disease pathogenesis.
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Affiliation(s)
- Yaxin Liang
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
| | - Rongrong Liu
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
| | - Jiahui Zhang
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
| | - Yixin Chen
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
| | - Shijuan Shan
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
| | - Yaoyao Zhu
- grid.449397.40000 0004 1790 3687College of Fisheries and Life Science, Hainan Tropical Ocean University, No. 1 Yucai Road, Sanya, 572022 China
| | - Guiwen Yang
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
| | - Hua Li
- grid.410585.d0000 0001 0495 1805Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014 China
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17
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Raji Sathyan K, Premraj A, Thavarool Puthiyedathu S. Antiviral radical SAM enzyme viperin homologue from Asian seabass (Lates calcarifer): Molecular characterisation and expression analysis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 136:104499. [PMID: 35931216 DOI: 10.1016/j.dci.2022.104499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
The host response to virus infection is mediated by the interferon system and its workhorse effector proteins like Interferon-stimulated genes (ISGs). Viperin is an interferon-inducible antiviral protein. In the present study, an antiviral radical SAM enzyme, viperin homologue, was cloned and characterised from teleost, Asian seabass (Lates calcarifer). This cloned viperin cDNA encodes 351 amino acid protein with predicted N-terminal amphipathic alpha-helix, conserved radical S-adenosyl l-methionine (SAM) domain with CxxxCxxC motif and a highly conserved C-terminal domain. Lcviperin gene consists of six exons and five introns. The secondary structure contains nine alpha helices and beta sheets. Viperin from Lates is evolutionarily conserved and shares about 89% identity with Seriola dumerili and 70% identity with human orthologue. Poly(I:C) and RGNNV upregulated Lcviperin during in-vivo challenge studies, providing insight into its antiviral properties. Lates antiviral effector genes like viperin could help in elucidating the host-virus protein interactions and allow the development of improved antiviral strategies against pathogens like betanodavirus that devastate aquaculture of the species.
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Affiliation(s)
- Krishnapriya Raji Sathyan
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682 016, Kerala, India
| | - Avinash Premraj
- Camel Biotechnology Centre, Presidential Camels and Camel Racing Affairs Centre, Department of the President's Affairs, PO Box 17292, Al Ain, United Arab Emirates
| | - Sajeevan Thavarool Puthiyedathu
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682 016, Kerala, India.
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18
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Jiang S, Luo J, Zhang Y, Cao Q, Wang Y, Xia N, Zheng W, Chen N, Meurens F, Wu H, Zhu J. The Porcine and Chicken Innate DNA Sensing cGAS-STING-IRF Signaling Axes Exhibit Differential Species Specificity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:412-426. [PMID: 35777849 DOI: 10.4049/jimmunol.2101212] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
The innate immune DNA sensing cyclic GMP-AMP synthase (cGAS)-stimulator of IFN genes (STING) signaling pathway plays a key role in host antiviral function. Although the cGAS-STING pathway has been extensively studied, the cGAS-STING signaling in livestock and poultry is not well understood, and whether the species specificity exists is still unknown. In this study, we found that porcine and chicken STING, but not cGAS, exhibit species differences in regulation of IFN; that is, porcine (p)STING mediates good induction of IFN in mammalian cells and low IFN induction in chicken DF-1 cells; on the contrary, chicken (ch)STING mediates IFN induction only in chicken cells but not in mammalian cells. Furthermore, it was found that the motifs pLxIS of pSTING and pLxVS of chSTING are responsible for the species disparity, with the IFN activity of pSTING and chSTING exchanged by swapping the two pLxI/VS motifs. The pLxI/VS motifs mediated the interactions of various STING with downstream IFN regulatory factors (IRFs), reflecting the species-specific pIRF3 and chIRF7. Next, the STING, IRFs, and STING-IRFs were reconstituted in porcine and chicken macrophages that were genetically knocked out for STING and/or IRFs by the CRISPR-Cas9 approach. The results showed that pSTING plus pIRF3 or chIRF7 are able to induce IFN; however, chSTING plus chIRF7 but not pIRF3 are able to induce IFN, suggesting that pIRF3 is specific and stringent, which underlies the inability of chSTING to induce IFN in mammalian cells. In summary, our findings reveal the differential species specificity in the cGAS-STING pathway and the underlying mechanisms, thus providing valuable insights on the cGAS-STING-IRF signaling axis for comparative immunology.
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Affiliation(s)
- Sen Jiang
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jia Luo
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Youwen Zhang
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Qi Cao
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Yuening Wang
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Nengwen Xia
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Wanglong Zheng
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Nanhua Chen
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - François Meurens
- Biologie, Épidémiologie et Analyse de Risque en santé animale, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Oniris, Nantes, France; and
- Department of Veterinary Microbiology and Immunology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Huiguang Wu
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jianzhong Zhu
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, China;
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
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Melo APC, Teixeira HMP, Coelho RS, De Jesus TDS, Queiroz GA, Silva HDS, De Almeida YCF, Alcantara-Neves NM, De Matos SMA, D'innocenzo S, Silva RDCR, Lima Barreto M, Costa RDS, Pinto LC, Figueiredo CA. Variants in proinflammatory genes IL1RL1, IL1B and IRF4 are associated with overweight in a pediatric Brazilian population. Gene X 2022; 828:146478. [PMID: 35390444 DOI: 10.1016/j.gene.2022.146478] [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: 02/15/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Obesity is a chronic complex disease with great prevalence for children all over the world. Characterized for low-grade inflammation associated with several comorbidities such as resistance and type 2 diabetes mellitus (T2DM). OBJECTIVES To investigate whether genetic variants in IL10, IL1RL1, IL1B, IRF4, TNF, IL6, and IL33 genes are associated with being overweight in children. METHODS We performed the genotyping of 1004 children using Illumina 2.5 Human Omni bead chip, and association analysis on the genetic variants and the overweight through logistic regression adjusted for sex, age and components principal. RESULTS Of the seven genes analyzed, 16 SNVs significantly associated. Eleven variants in IL1RL1, two in IL1B and one in IRF4 genes increased overweight risk and two SNVs in IL1RL1 were associated with protection against overweight. The rs2287047-A was negatively associated (OR: 0.66, CI95%: 0.19-0.45) and had a reduced IL1RL1 expression in whole blood (p 0.033) in silico eQTL. The rs12203592-T, in IRF4, was positively associated with being overweight, and led to an increased gene expression in whole blood (p < 0.001) and adipose tissue (p < 0.001). CONCLUSION These results suggest that genetic variants in inflammatory genes may play an important role in the development of overweight in children.
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Affiliation(s)
| | | | - Raisa Santos Coelho
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, BA, Brazil
| | | | | | | | | | | | | | - Silvana D'innocenzo
- Instituto de Saúde Coletiva, Universidade Federal Da Bahia, Salvador, BA, Brazil
| | | | - Maurício Lima Barreto
- Instituto de Saúde Coletiva, Universidade Federal Da Bahia, Salvador, BA, Brazil; CIDACS - Centro de Integração De Dados E Conhecimentos Para Saúde, Fiocruz, Brazil
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20
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Wang X, Li W, Jiang H, Ma C, Huang M, Wei X, Wang W, Jing L. Zebrafish Xenograft Model for Studying Pancreatic Cancer-Instructed Innate Immune Microenvironment. Int J Mol Sci 2022; 23:6442. [PMID: 35742884 PMCID: PMC9224329 DOI: 10.3390/ijms23126442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 12/10/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) has up to half the tumor mass of tumor-associated myeloid cells. Myeloid innate immune cells play important roles in regulating cancer cell recognition and tumor growth. PDAC cells often mold myeloid cells into pro-tumoral state to fuel cancer growth and induce immune suppression. However, how tumor cells educate the innate immune responses remains largely unknown. In this study, we used four different human PDAC cell lines (PANC1, BxPC3, AsPC1, and CFPAC1) to establish the zebrafish xenograft model and investigated the interaction between pancreatic cancer and innate immune cells. The primary tumor-derived cancer cells PANC1 and BxPC3 activated innate immune anti-tumoral responses efficiently, while cancer cells from metastatic tissues AsPC1 and CFPAC1 induced an innate immune suppression and educated innate immune cells towards pro-tumoral state. Chemical conversion of innate immune cells to anti-tumoral state inhibited tumor growth for AsPC1 and CFPAC1. Moreover, genetic and pharmacological inhibition of macrophages also significantly reduced tumor growth, supporting the important roles of macrophages in innate immune suppression. REG4 expression is high in AsPC1 and CFPAC1. Knockdown of REG4 induced innate immune activation and reduced tumor growth in the xenografts, indicating that REG4 is a beneficial target for PDAC therapy. Our study provides a fast in-vivo model to study PDAC-innate immune interaction and their plasticity that could be used to study the related mechanism as well as identify new drugs to enhance immunotherapy.
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Affiliation(s)
| | | | | | | | | | | | | | - Lili Jing
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China; (X.W.); (W.L.); (H.J.); (C.M.); (M.H.); (X.W.); (W.W.)
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21
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[Effects of interferon regulatory factor 9 on the biological phenotypes in PML-RARα-induced promyelocytic leukemia]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2022; 43:370-375. [PMID: 35680593 PMCID: PMC9250956 DOI: 10.3760/cma.j.issn.0253-2727.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the prognostic significance of interferon regulatory factor 9 (IRF9) expression and identify its role as a potential therapeutic target in acute promyelocytic leukemia (APL) . Methods: The gene expression profile and survival data applied in the bioinformatic analysis were obtained from The Cancer Genome Atlas and Beat acute myeloid leukemia (AML) cohorts. A dox-induced lentiviral system was used to induce the expression of PML-RARα (PR) in U937 cells, and the expression level of IRF9 in U937 cells treated with or without ATRA was examined. We then induced the expression of IRF9 in NB4, a promyelocytic leukemia cell line. In vitro studies focused on leukemic phenotypes triggered by IRF9 expression. Results: ①Bioinformatic analysis of the public database demonstrated the lowest expression of IRF9 in APL among all subtypes of AML, with lower expression associated with worse prognosis. ②We successfully established a PR-expression-inducible U937 cell line and found that IRF9 was downregulated by the PR fusion gene in APL, with undetectable expression in NB4 promyelocytic cells. ③An IRF9-inducible NB4 cell line was successfully established. The inducible expression of IRF9 promoted the differentiation of NB4 cells and had a synergistic effect with lower doses of ATRA. In addition, the inducible expression of IRF9 significantly reduced the colony formation capacity of NB4 cells. Conclusion: In this study, we found that the inducible expression of PR downregulates IRF9 and can be reversed by ATRA, suggesting a specific regulatory relationship between IRF9 and the PR fusion gene. The induction of IRF9 expression in NB4 cells can promote cell differentiation as well as reduce the colony forming ability of leukemia cells, implying an anti-leukemia effect for IRF9, which lays a biological foundation for IRF9 as a potential target for the treatment of APL.
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22
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Al Hamrashdi M, Brady G. Regulation of IRF3 activation in Human Antiviral Signalling Pathways. Biochem Pharmacol 2022; 200:115026. [PMID: 35367198 DOI: 10.1016/j.bcp.2022.115026] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 12/24/2022]
Abstract
The interferon regulatory factor (IRF) family of transcription factors play a vital role in the human innate antiviral immune responses with production of interferons (IFNs) as a hallmark outcome of activation. In recent years, IRF3 has been considered a principal early regulator of type I IFNs (TI-IFNs) directly downstream of intracellular virus sensing. Despite decades of research on IRF-activating pathways, many questions remain on the regulation of IRF3 activation. The kinases IκB kinase epsilon (IKKε) and TANK-binding kinase-1 (TBK1) and the scaffold proteins TRAF family member-associated NF-kappa-B activator (TANK), NF-kappa-B-activating kinase-associated protein 1 (NAP1) and TANK-binding kinase 1-binding protein 1 (TBKBP1)/similar to NAP1 TBK1 adaptor (SINTBAD) are believed to be core components of an IRF3-activation complex yet their contextual involvement and complex composition are still unclear. This review will give an overview of antiviral signaling pathways leading to the activation of IRF3 and discuss recent developments in our understanding of its proximal regulation.
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Affiliation(s)
- Mariya Al Hamrashdi
- Trinity Translational Medicine Institute, Trinity College Dublin, St. James' Hospital Campus, Dublin, Ireland.
| | - Gareth Brady
- Trinity Translational Medicine Institute, Trinity College Dublin, St. James' Hospital Campus, Dublin, Ireland.
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23
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Zhu Y, Yang G. Molecular identification and functional characterization of IRF4 from common carp (Cyprinus carpio. L) in immune response: a negative regulator in the IFN and NF-κB signalling pathways. BMC Vet Res 2022; 18:106. [PMID: 35300694 PMCID: PMC8928632 DOI: 10.1186/s12917-022-03205-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/07/2022] [Indexed: 12/03/2022] Open
Abstract
Background The interferon (IFN) regulatory factors (IRFs) were originally identified as transcription factors playing critical roles in the regulation of IFN-related genes in the signal pathway. In mammals, IRF4 plays a vital role in both the innate and adaptive immune system. This study aims to reveal the molecular characterization, phylogenetic analysis, expression profiles and the regulatory role in the IFN and NF-κB signalling pathways of IRF4 in common carp (Cyprinus carpio. L) (abbreviation, ccIRF4). Results Here, ccIRF4 was identified and characterized, it contained a DNA binding domain (DBD) which possess five tryptophans and an IRF-associated domain (IAD). The predicted protein sequence of the ccIRF4 showed higher identities with grass carp (Ctenopharyngodon idella) and zebrafish (Danio rerio). Phylogenetic analysis suggested that ccIRF4 has the closest relationship with zebrafish IRF4. Quantitative real-time PCR analysis showed that ccIRF4 was constitutively expressed in all investigated tissues with the highest expression level in the gonad. Polyinosinic:polycytidylic acid (poly I:C) stimulation up-regulated the ccIRF4 expressions in the liver, spleen, head kidney, skin, foregut and hindgut. Upon Aeromonas hydrophila injection, the expression level of ccIRF4 was up-regulated in all tissues with the exception of spleen. In addition, ccIRF4 was induced by lipopolysaccharide (LPS), peptidoglycan (PGN) and Flagellin in head kidney leukocytes (HKLs). Overexpression of the ccIRF4 gene in epithelioma papulosum cyprini cells (EPC) down regulated the expressions of IFN-related genes and proinflammatory factors. Dual-luciferase reporter assay revealed that ccIRF4 decreased the activation of NF-κB through MyD88. Conclusions These results indicate that ccIRF4 participates in both antiviral and antibacterial immune response and negatively regulates the IFN and NF-κB response. Overall, our study on ccIRF4 provides more new insights into the innate immune system of common carp as well as a theoretical basis for investigating the pathogenesis and prevention of fish disease.
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Affiliation(s)
- Yaoyao Zhu
- Key Laboratory of Tropical Marine Fishery Resources Protection and Utilization of Hainan Province, College of Fisheries and Life Science, Hainan Tropical Ocean University, No. 1 Yucai Road, Sanya, 572022, China. .,Hainan Key Laboratory for Conservation and Utilization of Tropical Marine Fishery Resources, Hainan Tropical Ocean University, Sanya, 572022, China.
| | - Guiwen Yang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China.
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24
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Yan X, Zhao X, Zhou M, Sun Y, Xu T. IRF4b and IRF8 Negatively Regulate RLR-Mediated NF-κB Signaling by Targeting MITA for Degradation in Teleost Fish. Front Immunol 2022; 13:858179. [PMID: 35309315 PMCID: PMC8927078 DOI: 10.3389/fimmu.2022.858179] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/01/2022] [Indexed: 12/12/2022] Open
Abstract
Mediator of IRF3 activation (MITA) is a significant signal adaptor in the retinoic acid-inducible gene-I like receptor (RLR) signaling pathway and plays an important role in the innate immune system. As a transcription factor, nuclear factor kappa B (NF-κB) can be available in many signaling pathways including the RLR signaling pathway and relative to biological processes like immune responses. In this study, it is determined that IRF4b and IRF8 can have a negative effect on NF-κB signaling pathway mediated by MITA in fish. Firstly, it is found that IRF4b and IRF8 have an inhibitory function on MITA-mediated NF-κB signaling pathway. It is interesting that IRF4b and IRF8 have similar functions to achieve precise downregulated and the degradation of MITA through the ubiquitin-proteasome pathway. IRF is taken as the core domain of IRF4b or IRF8 for the downregulation to MITA. This study provides data on MITA-mediated NF-κB signaling pathway in teleost fish and provides new insights into the regulatory mechanism in fish immune system.
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Affiliation(s)
- Xiaolong Yan
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Xueyan Zhao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Ming Zhou
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai, China
- *Correspondence: Tianjun Xu, ; Yuena Sun,
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai, China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- *Correspondence: Tianjun Xu, ; Yuena Sun,
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25
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Wang H, Xie L, Song X, Wang J, Li X, Lin Z, Su T, Liang B, Huang D. Purine-Induced IFN-γ Promotes Uric Acid Production by Upregulating Xanthine Oxidoreductase Expression. Front Immunol 2022; 13:773001. [PMID: 35154100 PMCID: PMC8829549 DOI: 10.3389/fimmu.2022.773001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 01/07/2022] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE Limiting purine intake, inhibiting xanthine oxidoreductase (XOR) and inhibiting urate reabsorption in proximal tubule by uricosuric drugs, to reduce serum uric acid (UA) levels, are recognized treatments for gout. However, the mechanism of increased how XOR expression and activity in hyperuricemia and gout remains unclear. This study aims to explore whether exogenous purines are responsible for increased XOR expression and activity. METHODS HepG2 and Bel-7402 human hepatoma cells were stimulated with exogenous purine, or were exposed to conditioned growth medium of purine-stimulated Jurkat cells, followed by measurement of XOR expression and UA production to determine the effect of lymphocyte-secreted cytokines on XOR expression in hepatocytes. The expression of STAT1, IRF1 and CBP and their binding on the XDH promoter were detected by western blotting and ChIP-qPCR. The level of DNA methylation was determined by bisulfite sequencing PCR. Blood samples from 117 hyperuricemia patients and 119 healthy individuals were collected to analyze the correlation between purine, UA and IFN-γ concentrations. RESULTS Excess of purine was metabolized to UA in hepatocyte metabolism by XOR that was induced by IFN-γ secreted in the conditioned growth medium of Jurkat cells in response to exogenous purine, but it did not directly induce XOR expression. IFN-γ upregulated XOR expression due to the enhanced binding of STAT1 to IRF1 to further recruit CBP to the XDH promoter. Clinical data showed positive correlation of serum IFN-γ with both purine and UA, and associated risk of hyperuricemia. CONCLUSION Purine not only acts as a metabolic substrate of XOR for UA production, but it induces inflammation through IFN-γ secretion that stimulates UA production through elevation of XOR expression.
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Affiliation(s)
- Huanhuan Wang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Lingzhu Xie
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Xuhong Song
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Jing Wang
- Department of Clinical Laboratory Medicine, Mianyang Central Hospital, Mianyang, China
| | - Xinyan Li
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Zhike Lin
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Ting Su
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Bin Liang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
| | - Dongyang Huang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, China
- Research Center of Translational Medicine, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
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26
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Molecular interactions of IRF4 in B cell development and malignancies. Biophys Rev 2021; 13:1219-1227. [DOI: 10.1007/s12551-021-00825-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 07/29/2021] [Indexed: 10/20/2022] Open
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27
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Association of Melanoma-Risk Variants with Primary Melanoma Tumor Prognostic Characteristics and Melanoma-Specific Survival in the GEM Study. Curr Oncol 2021; 28:4756-4771. [PMID: 34898573 PMCID: PMC8628692 DOI: 10.3390/curroncol28060401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/11/2021] [Accepted: 11/10/2021] [Indexed: 12/15/2022] Open
Abstract
Genome-wide association studies (GWAS) and candidate pathway studies have identified low-penetrant genetic variants associated with cutaneous melanoma. We investigated the association of melanoma-risk variants with primary melanoma tumor prognostic characteristics and melanoma-specific survival. The Genes, Environment, and Melanoma Study enrolled 3285 European origin participants with incident invasive primary melanoma. For each of 47 melanoma-risk single nucleotide polymorphisms (SNPs), we used linear and logistic regression modeling to estimate, respectively, the per allele mean changes in log of Breslow thickness and odds ratios for presence of ulceration, mitoses, and tumor-infiltrating lymphocytes (TILs). We also used Cox proportional hazards regression modeling to estimate the per allele hazard ratios for melanoma-specific survival. Passing the false discovery threshold (p = 0.0026) were associations of IRF4 rs12203592 and CCND1 rs1485993 with log of Breslow thickness, and association of TERT rs2242652 with presence of mitoses. IRF4 rs12203592 also had nominal associations (p < 0.05) with presence of mitoses and melanoma-specific survival, as well as a borderline association (p = 0.07) with ulceration. CCND1 rs1485993 also had a borderline association with presence of mitoses (p = 0.06). MX2 rs45430 had nominal associations with log of Breslow thickness, presence of mitoses, and melanoma-specific survival. Our study indicates that further research investigating the associations of these genetic variants with underlying biologic pathways related to tumor progression is warranted.
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28
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Li H, Chen X, Zhu Y, Liu R, Zheng L, Shan S, Zhang F, An L, Yang G. Molecular characterization and immune functional analysis of IRF2 in common carp (Cyprinus carpio L.): different regulatory role in the IFN and NF-κB signalling pathway. BMC Vet Res 2021; 17:303. [PMID: 34503504 PMCID: PMC8428054 DOI: 10.1186/s12917-021-03012-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/02/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Interferon regulatory factor 2 (IRF2) is an important transcription factor, which can regulate the IFN response and plays a role in antiviral innate immunity in teleost. RESULTS In the present study, the full-length cDNA sequence of IRF2 (CcIRF2) was characterized in common carp (Cyprinus carpio L.), which encoded a protein containing a conserved DNA-binding domain (DBD) and an IRF-associated domain (IAD). Phylogenetic analysis showed that CcIRF2 was most closely related with IRF2 of Ctenopharyngodon idella. CcIRF2 transcripts were detectable in all examined tissues, with higher expression in the gills, spleen and brain. CcIRF2 expression was upregulated in immune-related tissues of common carp upon polyinosinic:polycytidylic acid (poly (I:C)) and Aeromonas hydrophila stimulation and induced by poly (I:C), lipopolysaccharide (LPS), peptidoglycan (PGN) and flagellin in the peripheral blood leucocytes (PBLs) and head kidney leukocytes (HKLs). In addition, overexpression of CcIRF2 decreased the expression of IFN and IFN-stimulated genes (ISGs), and a dual-luciferase reporter assay revealed that CcIRF2 could increase the activation of NF-κB. CONCLUSIONS These results indicate that CcIRF2 participates in antiviral and antibacterial immune response and negatively regulates the IFN response, which provide a new insight into the regulation of IFN system in common carp, and are helpful for the prevention and control of infectious diseases in carp farming.
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Affiliation(s)
- Hua Li
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China.
| | - Xinping Chen
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China
| | - Yaoyao Zhu
- College of Fisheries and Life Science, Hainan Tropical Ocean University, No. 1 Yucai Road, Sanya, 572022, China
| | - Rongrong Liu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China
| | - Linlin Zheng
- Jinan Eco-environmental Monitoring Center of Shandong Province, No. 17199 Lvyou Road, Jinan, 250101, China
| | - Shijuan Shan
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China
| | - Fumiao Zhang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China
| | - Liguo An
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China
| | - Guiwen Yang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Jinan, 250014, China.
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Chen X, Guan Y, Li K, Luo T, Mu Y, Chen X. IRF1 and IRF2 act as positive regulators in antiviral response of large yellow croaker (Larimichthys crocea) by induction of distinct subgroups of type I IFNs. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 118:103996. [PMID: 33444646 DOI: 10.1016/j.dci.2021.103996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/06/2021] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Interferon regulatory factors (IRFs) are crucial transcription factors involved in transcriptional regulation of type I interferons (IFNs) and IFN-stimulated genes (ISGs) against viral infection. In teleost fish, eleven IRFs have been found, however, understanding of their roles in the antiviral response remains limited. In the previous study, IRF1 (LcIRF1) and IRF2 (LcIRF2) genes were cloned from large yellow croaker (Larimichthys crocea). Here, we further characterized their function in the antiviral response. LcIRF1 and LcIRF2 were constitutively expressed in primary head kidney monocytes/macrophages (PKMs), lymphocytes (PKLs), granulocytes (PKGs) and large yellow croaker head kidney (LYCK) cell line, and significantly upregulated in PKMs and LYCK cells after stimulation with poly (I:C). LcIRF1 could induce promoter activities of three large yellow croaker type I IFNs, IFNc, IFNd and IFNh, while LcIRF2 could only induce those of IFNd and IFNh, and inhibit IFNc promoter activity. Correspondingly, overexpression of LcIRF1 in LYCK cells increased expression of all three IFNs (IFNc, IFNd and IFNh), while that of LcIRF2 only upregulated the expression levels of IFNd and IFNh, and inhibited expression of IFNc, although both LcIRF1and LcIRF2 induced expression of IFN-stimulated genes (ISGs), MxA, PKR and Viperin. Additionally, both LcIRF1 and LcIRF2 inhibited the Spring Viremia of Carp Virus (SVCV) replication in epithelioma papulosum cyprinid (EPC) cells, thus showing antiviral activity. Taken together, these results indicated that both LcIRF1 and LcIRF2 play positive roles in regulating the antiviral response of large yellow croaker by induction of distinct subgroups of type I IFNs.
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Affiliation(s)
- Xiaojuan Chen
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yanyun Guan
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Kexin Li
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Tian Luo
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yinnan Mu
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xinhua Chen
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China.
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30
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Mishra R, Banerjea AC. SARS-CoV-2 Spike Targets USP33-IRF9 Axis via Exosomal miR-148a to Activate Human Microglia. Front Immunol 2021; 12:656700. [PMID: 33936086 PMCID: PMC8079643 DOI: 10.3389/fimmu.2021.656700] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/19/2021] [Indexed: 12/24/2022] Open
Abstract
SARS-CoV-2, the novel coronavirus infection has consistently shown an association with neurological anomalies in patients, in addition to its usual respiratory distress syndrome. Multi-organ dysfunctions including neurological sequelae during COVID-19 persist even after declining viral load. We propose that SARS-CoV-2 gene product, Spike, is able to modify the host exosomal cargo, which gets transported to distant uninfected tissues and organs and can initiate a catastrophic immune cascade within Central Nervous System (CNS). SARS-CoV-2 Spike transfected cells release a significant amount of exosomes loaded with microRNAs such as miR-148a and miR-590. microRNAs gets internalized by human microglia and suppress target gene expression of USP33 (Ubiquitin Specific peptidase 33) and downstream IRF9 levels. Cellular levels of USP33 regulate the turnover time of IRF9 via deubiquitylation. Our results also demonstrate that absorption of modified exosomes effectively regulate the major pro-inflammatory gene expression profile of TNFα, NF-κB and IFN-β. These results uncover a bystander pathway of SARS-CoV-2 mediated CNS damage through hyperactivation of human microglia. Our results also attempt to explain the extra-pulmonary dysfunctions observed in COVID-19 cases when active replication of virus is not supported. Since Spike gene and mRNAs have been extensively picked up for vaccine development; the knowledge of host immune response against spike gene and protein holds a great significance. Our study therefore provides novel and relevant insights regarding the impact of Spike gene on shuttling of host microRNAs via exosomes to trigger the neuroinflammation.
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Affiliation(s)
- Ritu Mishra
- Laboratory of Virology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, India
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31
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Wu Y, Zhou Y, Cao Z, Chen X, Du H, Sun Y. Interferon regulatory factor 7 contributes to the host response during Vibrio harveyi infection in the golden pompano Trachinotus ovatus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 117:103959. [PMID: 33316357 DOI: 10.1016/j.dci.2020.103959] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Vibrio harveyi is regarded as serious pathogen for marine fishes. However, host defense mechanisms involved in V. harveyi infection remain incompletely defined. The transcription factor IFN regulatory factor 7 (IRF7) is largely associated with host defense against viral infections, and the role of IRF7 during V. harveyi infection in fish has not been well illuminated previously. In this study, IRF7 from golden pompano (Trachinotus ovatus) was characterized (TroIRF7). The TroIRF7 gene is 1323 bp, which encodes 440 amino acid residues. Multiple amino acid alignments of TroIRF7 shows 30.37%-80.18% identity with other fish IRF7s, including Epinephelus coioides (80.18%), Larimichthys crocea (79.72%), Collichthys lucidus (79.26%), Miichthys miiuy (79.26%), Channa argus (78.77%), Cynoglossus semilaevis (72.67%), and Gadus morhua (65.23%). Like other IRF7s, TroIRF7 also contains 3 conserved domains: an N-terminal DNA-binding domain (DBD), an IRF association domain (IAD), and a C-terminal serine-rich domain (SRD). In the DBD, 4-5 conserved tryptophans were observed, which is a characteristic unique to all fish IRF7 members. TroIRF7 was constitutively expressed, with high levels in gill, head kidney, spleen, skin, and intestine. V. harveyi infection-induced TroIRF7 transcripts significantly up-regulation and translocation to the nucleus. TroIRF7 overexpression promote the fish to inhibit the replication of V. harveyi. And TroIRF7 knockdown led to decreased bacterial clearance in fish tissue. Furthermore, over-expression of TroIRF7 resulted in an increased production of interferon a3 and IFN signaling molecule in the spleen, suggesting that V. harveyi activates the IRF7- IFN pathway. These results suggest that TroIRF7 is an important component of immune responses against V. harveyi infection.
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Affiliation(s)
- Ying Wu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, PR China
| | - Yongcan Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, PR China
| | - Zhenjie Cao
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, PR China
| | - Xiaojuan Chen
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, PR China
| | - Hehe Du
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Yun Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, PR China.
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32
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Salman AA, Waheed MH, Ali-Abdulsahib AA, Atwan ZW. Low type I interferon response in COVID-19 patients: Interferon response may be a potential treatment for COVID-19. Biomed Rep 2021; 14:43. [PMID: 33786172 DOI: 10.3892/br.2021.1419] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/17/2021] [Indexed: 02/07/2023] Open
Abstract
Interferons (IFN) are antiviral cytokines that mitigate the effects of invading viruses early on during the infection process. SARS-CoV and MERS induce weak IFN responses; hence, the clinical trials which included recombinant IFN accompanied with other antiviral drugs exhibited improved results in terms of shortening the duration of illness. The aim of the present study was to evaluate the type I IFN response in COVID-19 patients to determine whether it is sufficient to eliminate or reduce the severity of the infection, and whether it can be recommended as a potential therapy. Total RNA samples were converted to cDNA and used as templates to evaluate the gene expression levels of IFN regulatory factor (IRF)3 and IFN-β in COVID-19 patients or control. The results showed that IRF3 gene expression was upregulated ~250-fold compared with the negative samples. In contrast, IFN-β expression increased slightly in COVID-19 patients. Consistent with other coronaviruses, such as SARS-CoV and MERS, COVID-19 infection does not induce an efficient IFN response to reduce the severity of the virus. This may be attributed to an incomplete response of IRF3 in activating the IFN-β promoter in the infected patients. The results suggest IFN-β or α may be used as potential treatments.
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Affiliation(s)
| | | | | | - Zeenah Weheed Atwan
- Genetic Engineering Laboratory, Biology Department, College of Science, Basrah University, Basrah, Iraq
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33
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Sundararaj S, Seneviratne S, Williams SJ, Enders A, Casarotto MG. Structural determinants of the IRF4/DNA homodimeric complex. Nucleic Acids Res 2021; 49:2255-2265. [PMID: 33533913 PMCID: PMC7913761 DOI: 10.1093/nar/gkaa1287] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 12/22/2020] [Accepted: 02/01/2021] [Indexed: 11/15/2022] Open
Abstract
Interferon regulatory factor 4 (IRF4) is a key transcription factor (TF) in the regulation of immune cells, including B and T cells. It acts by binding DNA as both a homodimer and, in conjunction with other TFs, as a heterodimer. The choice of homo and heterodimeric/ DNA interactions is a critical aspect in the control of the transcriptional program and cell fate outcome. To characterize the nature of this interaction in the homodimeric complex, we have determined the crystal structure of the IRF4/ISRE homodimeric complex. We show that the complex formation is aided by a substantial DNA deformation with co-operative binding achieved exclusively through protein–DNA contact. This markedly contrasts with the heterodimeric form where DNA bound IRF4 is shown to physically interact with PU.1 TF to engage EICE1. We also show that the hotspot residues (Arg98, Cys99 and Asn102) contact both consensus and non-consensus sequences with the L1 loop exhibiting marked flexibility. Additionally, we identified that IRF4L116R, a mutant associated with chronic lymphocytic leukemia, binds more robustly to DNA thereby providing a rationale for the observed gain of function. Together, we demonstrate key structural differences between IRF4 homo and heterodimeric complexes, thereby providing molecular insights into IRF4-mediated transcriptional regulation.
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Affiliation(s)
- Srinivasan Sundararaj
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, Australian National University, Canberra 2600, Australia
| | - Sandali Seneviratne
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, Australian National University, Canberra 2600, Australia
| | - Simon J Williams
- Research School of Biology, Australian National University, Canberra 2600, Australia
| | - Anselm Enders
- Department of Immunology, John Curtin School of Medical Research, Australian National University, Canberra 2600, Australia.,Center for Personalised Immunology, John Curtin School of Medical Research, Australian National University, Canberra 2600, Australia
| | - Marco G Casarotto
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, Australian National University, Canberra 2600, Australia
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Clark TC, Boudinot P, Collet B. Evolution of the IRF Family in Salmonids. Genes (Basel) 2021; 12:genes12020238. [PMID: 33567584 PMCID: PMC7915476 DOI: 10.3390/genes12020238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/30/2022] Open
Abstract
Interferon regulatory factors (IRFs) as a family, are major regulators of the innate antiviral response in vertebrates principally involved in regulating the expression of interferons (IFNs) and interferon-stimulated genes (ISGs). To date, nine IRFs have been identified in mammals with a 10th member also found in several avian and fish species. Through genome mining and phylogenetic analysis, we identified and characterised 23 irf genes in 6 salmonid species. This larger repertoire of IRF in salmonids results from two additional whole-genome duplications which occurred in early teleosts and salmonids, respectively. Synteny analysis was then used to identify and confirm which paralogues belonged to each subgroup and a new nomenclature was assigned to the salmonid IRFs. Furthermore, we present a full set of Real-Time PCR primers for all rainbow trout IRFs, confirmed by sequencing to ensure paralogue specificity. RT PCR was then used to examine the response of all trout irf genes in vivo, following Vibrio anguillarum and poly I:C stimulation, indicating potential functional divergence between paralogues. Overall, this study presents a comprehensive overview of the IRF family in salmonids and highlights some novel roles for the salmonid-specific IRFs in immunity.
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35
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Florentin J, Zhao J, Tai YY, Vasamsetti SB, O’Neil SP, Kumar R, Arunkumar A, Watson A, Sembrat J, Bullock GC, Sanders L, Kassa B, Rojas M, Graham BB, Chan SY, Dutta P. Interleukin-6 mediates neutrophil mobilization from bone marrow in pulmonary hypertension. Cell Mol Immunol 2021; 18:374-384. [PMID: 33420357 PMCID: PMC8027442 DOI: 10.1038/s41423-020-00608-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 11/21/2020] [Indexed: 01/29/2023] Open
Abstract
Myeloid cells, such as neutrophils, are produced in the bone marrow in high quantities and are important in the pathogenesis of vascular diseases such as pulmonary hypertension (PH). Although neutrophil recruitment into sites of inflammation has been well studied, the mechanisms of neutrophil egress from the bone marrow are not well understood. Using computational flow cytometry, we observed increased neutrophils in the lungs of patients and mice with PH. Moreover, we found elevated levels of IL-6 in the blood and lungs of patients and mice with PH. We observed that transgenic mice overexpressing Il-6 in the lungs displayed elevated neutrophil egress from the bone marrow and exaggerated neutrophil recruitment to the lungs, resulting in exacerbated pulmonary vascular remodeling, and dysfunctional hemodynamics. Mechanistically, we found that IL-6-induced neutrophil egress from the bone marrow was dependent on interferon regulatory factor 4 (IRF-4)-mediated CX3CR1 expression in neutrophils. Consequently, Cx3cr1 genetic deficiency in hematopoietic cells in Il-6-transgenic mice significantly reduced neutrophil egress from bone marrow and decreased neutrophil counts in the lungs, thus ameliorating pulmonary remodeling and hemodynamics. In summary, these findings define a novel mechanism of IL-6-induced neutrophil egress from the bone marrow and reveal a new therapeutic target to curtail neutrophil-mediated inflammation in pulmonary vascular disease.
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Affiliation(s)
- Jonathan Florentin
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Jingsi Zhao
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Yi-Yin Tai
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Sathish Babu Vasamsetti
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Scott P. O’Neil
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Rahul Kumar
- grid.266102.10000 0001 2297 6811Division of Pulmonary and Critical Care Medicine, Zuckerberg San Francisco General Hospital and Trauma Center, University of California San Francisco, Building 100, 2nd floor, 1001 Potrero Ave, San Francisco, CA USA
| | - Anagha Arunkumar
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Annie Watson
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - John Sembrat
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA ,grid.21925.3d0000 0004 1936 9000Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15261 USA
| | - Grant C. Bullock
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA ,grid.412689.00000 0001 0650 7433Division of Hematopathology, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Linda Sanders
- grid.430503.10000 0001 0703 675XDepartment of Medicine, Anschutz Medical Campus, Building RC2, 9th floor, 12700 E 19th Ave, Aurora, CO 80045 USA
| | - Biruk Kassa
- grid.266102.10000 0001 2297 6811Division of Pulmonary and Critical Care Medicine, Zuckerberg San Francisco General Hospital and Trauma Center, University of California San Francisco, Building 100, 2nd floor, 1001 Potrero Ave, San Francisco, CA USA
| | - Mauricio Rojas
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA ,grid.21925.3d0000 0004 1936 9000Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15261 USA
| | - Brian B. Graham
- grid.430503.10000 0001 0703 675XDepartment of Medicine, Anschutz Medical Campus, Building RC2, 9th floor, 12700 E 19th Ave, Aurora, CO 80045 USA
| | - Stephen Y. Chan
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA
| | - Partha Dutta
- grid.412689.00000 0001 0650 7433Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung, Blood, and Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15213 USA ,grid.21925.3d0000 0004 1936 9000Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
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Yanai H, Negishi H, Taniguchi T. The IRF family of transcription factors: Inception, impact and implications in oncogenesis. Oncoimmunology 2021; 1:1376-1386. [PMID: 23243601 PMCID: PMC3518510 DOI: 10.4161/onci.22475] [Citation(s) in RCA: 171] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Members of the interferon-regulatory factor (IRF) proteins family were originally identified as transcriptional regulators of the Type I interferon system. Thanks to consistent advances made in our understanding of the immunobiology of innate receptors, it is now clear that several IRFs are critical for the elicitation of innate pattern recognition receptors, and—as a consequence—for adaptive immunity. In addition, IRFs have attracted great attentions as they modulate cellular responses that are involved in tumorigenesis. The regulation of oncogenesis by IRFs has important implications for understanding the host susceptibility to several Types of cancers, their progression, as well as the potential for therapeutic interventions.
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Affiliation(s)
- Hideyuki Yanai
- Department of Molecular Immunology; Institute of Industrial Science; The University of Tokyo; Tokyo, Japan ; Core Research for Evolution Science and Technology; Japan Science and Technology Agency; Chiyoda-ku, Tokyo, Japan
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Rogers TJ. Kappa Opioid Receptor Expression and Function in Cells of the Immune System. Handb Exp Pharmacol 2021; 271:419-433. [PMID: 33580386 DOI: 10.1007/164_2021_441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The kappa opioid receptor (KOR) is expressed on a number of hematopoietic cell populations, based on both protein binding analysis and the detection of kappa opioid receptor gene (Oprk1) transcripts. There are prominent Oprk1 splice variants that are expressed in the mouse and human brain cells and leukocytes. The activation of KOR results in reduced antibody production, an inhibition of phagocytic cell activity, an inhibition of T cell development, alterations in the production of various pro-inflammatory cytokines, chemokines, and the receptors for these mediators. Finally, the activation of KOR also leads to the regulation of receptor functional activity of chemokine receptors through the process of heterologous desensitization. The functional activity of KOR is important for the regulation of inflammatory responses and may provide opportunities for the development of therapeutics for the treatment of inflammatory disease states.
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Affiliation(s)
- Thomas J Rogers
- Center for Inflammation, Translational and Clinical Lung Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
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38
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Zheng W, Yan X, Huo R, Zhao X, Sun Y, Xu T. IRF11 enhances the inhibitory effect of IκBα on NF-κB activation in miiuy croaker. FISH & SHELLFISH IMMUNOLOGY 2020; 107:156-162. [PMID: 32961292 DOI: 10.1016/j.fsi.2020.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
NF-κB is a typical transcription factor that regulates expression of various genes involved in inflammatory and immune responses. Therefore, it is essential that NF-κB signaling tightly regulated to maintain immune balance. Compared with those of mammals, the regulatory mechanisms of NF-κB signaling is rarely reported in teleost fish. IκBα is a prominent negative feedback regulator in the NF-κB signaling system. In this study, we determined that IRF11 enhances the inhibitory effect of IκBα on NF-κB activation in teleost fish. Overexpression of IRF11 can inhibit IκBα degradation, whereas its knockdown has the opposite effect of IκBα. Our study further indicates that IκBα was regulated via ubiquitin-proteasome degradation pathway, IRF11 inhibits IκBα in ubiquitin-proteasome degradation. This study provides a novel evidence on the regulation of innate immune signaling pathways in teleost fish and thus provides new insights into the regulatory mechanisms in mammals.
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Affiliation(s)
- Weiwei Zheng
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiaolong Yan
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ruixuan Huo
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Xueyan Zhao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, 201306, China.
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, 201306, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 201306, China.
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39
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Li M, Liu C, Xu X, Liu Y, Jiang Z, Li Y, Lv Y, Lu S, Hu C, Mao H. Grass carp (Ctenopharyngodon idella) GPATCH3 initiates IFN 1 expression via the activation of STING-IRF7 signal axis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 112:103781. [PMID: 32645337 DOI: 10.1016/j.dci.2020.103781] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 06/24/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
GPATCH3, a protein with G-patch domain, is known to participate in innate immune response and organ development in mammals. However, there are few reports on GPATCH3 in fish. Here the cDNA sequence of GPATCH3 was cloned from Ctenopharyngodon idella (CiGPATCH3, MN149902) and was determined its character. A cDNA sequence of CiGPATCH3 is 1646 bp and contains an ORF of 1221 bp translating a protein of 407 amino acids. Phylogenetic analysis uncovered that CiGPATCH3 possesses a relatively high degree of homology with Cyprinus carpio GPATCH3. The mRNA level of CiGPATCH3 was increased following the intracellular stimulation of poly (I:C) into CIK cells. In vivo, over-expression of CiGPATCH3 can significantly up-regulate IFN 1 and ISG15 expression at mRNA and protein levels. To investigate the molecular mechanism by which GPATCH3 initiates the innate immune response in fish, co-IP experiments were performed to analyze the substrates of CiGPATCH3. The results showed that CiGPATCH3 directly interacted with CiSTING, but not with CiIRF3, CiIRF7, CiTBK1 or CiIPS-1. As compared with the single transfection of CO cells with either CiGPATCH3 or CiSTING, the expression of IFN 1 was more significantly up-regulated in cells under treatment with dual transfection of CiGPATCH3 and CiSTING. Knockdown of CiGPATCH3 inhibited STING-mediated IFN 1 expression in fish cells. Over-expression of CiGPATCH3 and CiSTING facilitated the phosphorylation and cytoplasmic-to-nuclear translocation of CiIRF7. These results explicitly showed that CiGPATCH3 up-regulates IFN 1 and ISG15 expression via the activation of STING-IRF7 signal axis in vivo.
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Affiliation(s)
- Meifeng Li
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Changxin Liu
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Xiaowen Xu
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Yapeng Liu
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Zeying Jiang
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Yinping Li
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Yangfeng Lv
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Shina Lu
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Chengyu Hu
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China.
| | - Huiling Mao
- Department of Bioscience, School of Life Science, Nanchang University, Nanchang, 330031, China.
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40
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Xu YP, Wang LZ, Zhou YL, Xiao Y, Gu WB, Li B, Zhao XF, Dong WR, Shu MA. Identification and functional analysis of two interferon regulatory factor 3 genes and their involvement in antiviral immune responses in the Chinese giant salamander Andrias davidianus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 110:103710. [PMID: 32311388 DOI: 10.1016/j.dci.2020.103710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/31/2020] [Accepted: 04/11/2020] [Indexed: 06/11/2023]
Abstract
Interferon regulatory factor 3 (IRF3), a crucial member of interferon regulatory factor (IRF) family, plays an important role in innate immunity in vertebrates. However, there are no reports on the characterization and especially their respective functional analysis of two IRF3 genes in some species. In this study, two IRF3 genes as well as their roles in the immune response were identified and investigated in Chinese giant salamander, Andrias davidianus. The complete open reading frames of AdIRF3A and AdIRF3B were 1, 113 bp and 1, 380 bp in length, encoding 370 and 459 amino acids, respectively. Both AdIRF3A and AdIRF3B protein contain an IRF and an IRF3 domain. Phylogenetic analysis indicated that AdIRF3s clustered together with other IRF3 proteins. Tissue distribution analysis showed that AdIRF3s were expressed in all tissues tested, with highest expression levels in blood. Both AdIRF3s actively responded to Chinese giant salamander iridovirus (GSIV) and poly (I:C) challenge in A. davidianus. AdIRF3A/B silencing significantly suppressed the DNA virus and viral RNA analog-induced expression of IFN-inducible genes. Luciferase reporter assay further confirmed the regulatory role of AdIRF3s in IFN signaling. These results provide new insights into the origin or evolution of IRF3 in amphibians and even in vertebrates.
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Affiliation(s)
- Ya-Ping Xu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lan-Zhi Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yi-Lian Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yi Xiao
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wen-Bin Gu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Bo Li
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xiao-Feng Zhao
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Wei-Ren Dong
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Miao-An Shu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.
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Shi Y, Zhang B, Zhu J, Huang W, Han B, Wang Q, Qi C, Wang M, Liu F. miR-106b-5p Inhibits IRF1/IFN-β Signaling to Promote M2 Macrophage Polarization of Glioblastoma. Onco Targets Ther 2020; 13:7479-7492. [PMID: 32801770 PMCID: PMC7398755 DOI: 10.2147/ott.s238975] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 07/06/2020] [Indexed: 01/01/2023] Open
Abstract
Purpose The microRNA (miRNA) profile changes in the tumor-associated macrophages. However, the role of miR-106b-5p in the glioblastoma-associated macrophages is poorly understood. Materials and Methods In our study, miR-106b-5p and M2 macrophage markers were detected by qRT-PCR and Western blotting in THP1 cells, with the conditioned medium from U251 cells or M2 macrophages in response to IL-4 stimulation and M1 macrophages stimulated by LPS and IFN-γ. IFN regulatory factor (IRF1) was identified as a target of miR-106b-5p in the glioma infiltrating macrophages by luciferase reporter assay. The molecular mechanisms involved in the miR-106b-5p-mediated regulation of M2 polarization were clarified by shRNA knockdown assay. Results Our results showed miR-106b-5p expression was upregulated in glioma-infiltrating macrophages. miR-106b-5p regulated M2 polarization of glioma infiltrating macrophages and enhanced the growth of glioma-infiltrating macrophages. IRF1 was identified as a target of miR-106b-5p. Furthermore, miR-106b-5p inhibited IRF1 expression by targeting IRF1/IFN-β pathway to promote M2 polarization of macrophages. Conclusion miR-106b-5p may inhibit IRF1/IFN-β signaling to promote M2 macrophage polarization of glioblastoma, and it may become a novel target for the treatment of glioblastoma.
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Affiliation(s)
- Yu Shi
- Department of Neurology, Xuzhou Hospital Affiliated to Jiangsu University, Xuzhou, Jiangsu, People's Republic of China
| | - Bin Zhang
- Department of Neurosurgery, Jintan People's Hospital, Changzhou, Jiangsu, People's Republic of China
| | - Jian Zhu
- Department of Neurosurgery, Yancheng No.1 People's Hospital, Yancheng, Jiangsu, People's Republic of China
| | - Wu Huang
- Department of Neurosurgery, Nanjing Medical University Affiliated Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, People's Republic of China
| | - Bin Han
- Department of Neurosurgery, Nanjing Medical University Affiliated Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, People's Republic of China
| | - Qilong Wang
- Department of Neurosurgery, Nanjing Medical University Affiliated Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, People's Republic of China
| | - Chunjian Qi
- Department of Central Lab, Nanjing Medical University Affiliated Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, People's Republic of China
| | - Minghai Wang
- Department of Neurosurgery, Nanjing Medical University Affiliated Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, People's Republic of China
| | - Fang Liu
- Department of Neurosurgery, Nanjing Medical University Affiliated Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, People's Republic of China
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Yan X, Zhao X, Huo R, Xu T. IRF3 and IRF8 Regulate NF-κB Signaling by Targeting MyD88 in Teleost Fish. Front Immunol 2020; 11:606. [PMID: 32373114 PMCID: PMC7179762 DOI: 10.3389/fimmu.2020.00606] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/16/2020] [Indexed: 12/12/2022] Open
Abstract
MyD88 is a conserved intracellular adaptor, which plays an important role in the innate immune system. MyD88 transmits signals for downstream of toll-like and IL-1 receptors to activate NF-κB signaling pathway, which is tightly controlled in the immune response to maintain immune intensity and immune homeostasis at different stages. NF-κB signaling pathway has been extensively studied in mammals, but regulatory molecular mechanism is still unclear in teleost fish. We determined that IRF3 and IRF8 can regulate MyD88-mediated NF-κB signaling pathway in fish. Interestingly, MyD88 is precisely regulated by IRF3 and IRF8 through the same mechanism but in completely opposite ways. IRF3 promotes MyD88-mediated NF-κB signaling pathway, whereas IRF8 inhibits the signaling pathway. MyD88 is regulated via ubiquitin-proteasome degradation, whereas IRF3 or IRF8 inhibited or promoted MyD88 degradation in this pathway. Specifically, in the early stage of lipopolysaccharide (LPS) stimulation or Vibrio infection, up-regulation of IRF3 and down-regulation of IRF8 eventually increased MyD88 expression to activate the NF-κB signaling pathway to trigger immune response. In the late stage of stimulation, down-regulated IRF3 and up-regulated IRF8 synergistically regulate the expression of MyD88 to a normal level, thus maintaining the immune balance of homeostasis and preventing serious damage from persistent over-immunization. This study presents information on Myd88-NF-κB signaling pathway in teleost fish and provides new insights into its regulatory mechanism in fish immune system.
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Affiliation(s)
- Xiaolong Yan
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xueyan Zhao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Ruixuan Huo
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China.,International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
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Functional Analysis of IRF1 Reveals its Role in the Activation of the Type I IFN Pathway in Golden Pompano, Trachinotus ovatus (Linnaeus 1758). Int J Mol Sci 2020; 21:ijms21072652. [PMID: 32290244 PMCID: PMC7177527 DOI: 10.3390/ijms21072652] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/01/2020] [Accepted: 04/09/2020] [Indexed: 11/20/2022] Open
Abstract
Interferon (IFN) regulatory factor 1 (IRF1), a transcription factor with a novel helix–turn–helix DNA-binding domain, plays a crucial role in innate immunity by regulating the type I IFN signaling pathway. However, the regulatory mechanism through which IRF1 regulates type I IFN in fish is not yet elucidated. In the present study, IRF1 was characterized from golden pompano, Trachinotus ovatus (designated ToIRF1), and its immune function was identified to elucidate the transcriptional regulatory mechanism of ToIFNa3. The full-length complementary DNA (cDNA) of IRF1 is 1763 bp, including a 900-bp open reading frame (ORF) encoding a 299-amino-acid polypeptide. The putative protein sequence has 42.7–71.7% identity to fish IRF1 and possesses a representative conserved domain (a DNA-binding domain (DBD) at the N-terminus). The genomic DNA sequence of ToIRF1 consists of eight exons and seven introns. Moreover, ToIRF1 is constitutively expressed in all examined tissues, with higher levels being observed in immune-relevant tissues (whole blood, gill, and skin). Additionally, Cryptocaryon irritans challenge in vivo increases ToIRF1 expression in the skin as determined by Western blotting (WB); however, protein levels of ToIRF1 in the gill did not change significantly. The subcellular localization indicates that ToIRF1 is localized in the nucleus and cytoplasm with or without polyinosinic/polycytidylic acid (poly (I:C)) induction. Furthermore, overexpression of ToIRF1 or ToIFNa3 shows that ToIRF1 can notably activate ToIFNa3 and interferon signaling molecule expression. Promoter sequence analysis finds that several interferon stimulating response element (ISRE) binding sites are present in the promoter of ToIFNa3. Additionally, truncation, point mutation, and electrophoretic mobile shift (EMSA) assays confirmed that ToIRF1 M5 ISRE binding sites are functionally important for ToIFNa3 transcription. These results may help to illuminate the roles of teleost IRF1 in the transcriptional mechanisms of type I IFN in the immune process.
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Hou J, Chen SN, Gan Z, Li N, Huang L, Huo HJ, Yang YC, Lu Y, Yin Z, Nie P. In Primitive Zebrafish, MHC Class II Expression Is Regulated by IFN-γ, IRF1, and Two Forms of CIITA. THE JOURNAL OF IMMUNOLOGY 2020; 204:2401-2415. [DOI: 10.4049/jimmunol.1801480] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 02/13/2020] [Indexed: 12/21/2022]
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Lu X, Liu J, Yan J, Wu H, Feng H. Identification and characterization of IRF9 from black carp Mylopharyngodon piceus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 103:103528. [PMID: 31654647 DOI: 10.1016/j.dci.2019.103528] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Interferon regulatory factor 9 (IRF9) plays a crucial role in JAK-STAT signaling in human and mammal. However, the relationship between IRF9 and STAT1 in teleost fish remains largely unknown. The previous study has elucidated that two STAT1 isoforms (bcSTAT1a and bcSTAT1b) of black carp (Mylopharyngodon piceus) play an important role during the innate immune activation initiated by grass carp reovirus (GCRV). In this paper, black carp IRF9 (bcIRF9) has been identified and characterized. bcIRF9 was distributed majorly in the nucleus and the linker domain (LD) of bcIRF9 was vital for its nuclear localization. bcIRF9 showed ISRE-inducing activity in reporter assay and presented antiviral activity against GCRV in plaque assay, in which both DNA binding domain (DBD) and LD of bcIRF9 were essential for its antiviral signaling. bcIRF9 was identified to interact with both bcSTAT1a and bcSTAT1b in the co-immunoprecipitation assay. It was interesting that bcIRF9-mediated antiviral signaling was up-regulated by bcSTAT1a; however, down-regulated by bcSTAT1b. Thus, our data support the conclusion that bcIRF9 plays an important role in the innate immune defense against GCRV, in which two STAT1 proteins function differently.
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Affiliation(s)
- Xingyu Lu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Ji Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Jun Yan
- 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.
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Zhu KC, Guo HY, Zhang N, Liu BS, Guo L, Jiang SG, Zhang DC. Structural and expression analysis of golden pompano Trachinotus ovatus IRF5 and its role in regulation of type I IFN. FISH & SHELLFISH IMMUNOLOGY 2020; 97:313-321. [PMID: 31866451 DOI: 10.1016/j.fsi.2019.12.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/04/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
The interferon regulatory factor 5 (IRF5) is a mediator of the type I IFN signalling pathways, thereby playing a key role in innate immunity. However, the detailed mechanism through which IRF5 regulates type I IFN in fish remains unclearly. In the present study, we first describe the identification of IRF5 (ToIRF5) from golden pompano (Trachinotus ovatus) and its features at the genomic sequence and expression level. The genomic DNA sequence consists of eight exons and seven introns. The full-length ToIRF5 cDNA is composed of 2, 059 bp and encodes for 499 amino acid polypeptides. The putative protein sequence shares 66.3%-82.9% identity to fish IRF5 and possesses three representative conserved domains (a DNA-binding domain (DBD) at the N-terminus, an IRF-associated domain (IAD), and a virus-activated domain (VAD) at the C-terminus) and one highly variable domain (middle region (MR)). Furthermore, the ToIRF5 transcript is constitutively expressed in all examined tissues, with higher levels observed in the immune relevant tissues. The mRNA levels of ToIRF5 are increased by polyinosinic: polycytidylic acid [poly (I: C)], lipopolysaccharide (LPS) and flagellin stimulation in the immune- and nonimmune-related tissues. The subcellular localization indicates that ToIRF5 is mainly localized in the cytoplasm with or without poly (I: C) induction. In addition, to explore whether ToIRF5 is a modulator of ToIFNa3, promoter analysis is performed. The region from -200 bp to +1 bp is identified as the core promoter by different truncated mutants of ToIFNa3. Mutation analyse declares that the activity of the ToIFNa3-5 promoter significantly decreases after targeted mutation of M2 binding sites. Moreover, overexpression of ToIRF5 in vitro memorably aggrandizes the expression of some IFN/IRF-based signalling pathway genes. These results provide new insights into the roles of teleost IRF5 in transcriptional mechanisms of type I IFN in the immunity process.
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Affiliation(s)
- Ke-Cheng Zhu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Hua-Yang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Nan Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Bao-Suo Liu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Liang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Shi-Gui Jiang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Dian-Chang Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China.
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Zhu KC, Liu BS, Zhang N, Guo HY, Guo L, Jiang SG, Zhang DC. Interferon regulatory factor 2 plays a positive role in interferon gamma expression in golden pompano, Trachinotus ovatus (Linnaeus 1758). FISH & SHELLFISH IMMUNOLOGY 2020; 96:107-113. [PMID: 31805410 DOI: 10.1016/j.fsi.2019.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/21/2019] [Accepted: 12/01/2019] [Indexed: 06/10/2023]
Abstract
In fish, interferon (IFN) regulatory factor 2 (IRF2) is a regulator of the type I IFN-dependent immune response, thereby playing a crucial role in innate immunity. However, the specific mechanism by which IRF2 regulates type II IFN in fish remains unclear. In the present study, first, to analyse the potential role of golden pompano (Trachinotus ovatus) IRF2 (ToIRF2) in the immune response, the mRNA level of ToIRF2 was detected by quantitative real-time polymerase chain reaction (qRT-PCR) after parasite infection. ToIRF2 was upregulated at early time points in both local infection sites (skin and gill) and system immune tissues (liver, spleen, and head-kidney) after stimulation with Cryptocaryon irritans. Second, to investigate the modulation effect of ToIRF2 on type II IFN (interferon gamma, IFNγ) expression, a promoter analysis was performed using progressive deletion mutations of ToIFNγ. The expression level of IFNγ-5 was highest among the five truncated mutants in response to ToIRF2, indicating that the core promoter region was located from -189 bp to +120 bp, which included the IRF2 binding sites. Mutation analyses showed that the activity of the ToIFNγ promoter dramatically decreased after the targeted mutation of the M1, M2 or M3 binding sites. Additionally, electrophoretic mobile shift assay (EMSA) confirmed that IRF2 interacted with the M1 binding site in the ToIFNγ promoter region to dominate ToIFNγ expression. Finally, overexpressing ToIRF2 in vitro notably increased ToIFNγ and the transcription of several type II IFN/IRF-based signalling pathway genes. These results suggested that ToIRF2 might be involved in the host defence against C. irritans infection and contribute to a better understanding of the transcriptional mechanisms by which ToIRF2 regulates type II IFN in fish.
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Affiliation(s)
- Ke-Cheng Zhu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China
| | - Bao-Suo Liu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China
| | - Nan Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China
| | - Hua-Yang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China
| | - Liang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China
| | - Shi-Gui Jiang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China
| | - Dian-Chang Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou, Guangdong Province, PR China.
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Hasan A, Kochumon S, Al-Ozairi E, Tuomilehto J, Al-Mulla F, Ahmad R. Correlation Profile of Suppression of Tumorigenicity 2 and/or Interleukin-33 with Biomarkers in the Adipose Tissue of Individuals with Different Metabolic States. Diabetes Metab Syndr Obes 2020; 13:3839-3859. [PMID: 33116731 PMCID: PMC7586022 DOI: 10.2147/dmso.s251978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 08/01/2020] [Indexed: 12/14/2022] Open
Abstract
PURPOSE The suppression of tumorigenicity 2 (ST2) has two main splice variants including a membrane bound (ST2) form, which activates the myeloid differentiation primary response 88 (MyD88)/nuclear factor-kappa B (NF-κB) signaling pathway, and a secreted soluble form (sST2), which acts as a decoy receptor for ST2 ligand, interleukin (IL)-33. The IL-33/ST2 axis is protective against obesity, insulin resistance, and type 2 diabetes (T2D). In humans, adipose tissue IL-33 displays distinct correlation profiles with glycated hemoglobin, ST2, and other immunometabolic mediators, depending on the glycemic health of the individuals. We determined whether adipose tissue ST2 displays distinct correlation profiles with immunometabolic mediators and whether ST2 and/or IL-33 are correlated with intracellular signaling molecules. PATIENTS AND METHODS A total of 91 adults with normal glycemia, prediabetes, and T2D were included. After measuring their anthropometric and biochemical parameters, subcutaneous adipose tissues were isolated and mRNA expression of biomarkers was measured. RESULTS In individuals with normal glycemia, adipose tissue ST2 was directly correlated with chemokine (C-C motif) ligand (CCL)-2, CCL5, IL-12, fibrinogen-like protein 2 (FGL2) and interferon regulatory factor (IRF)-4, but inversely correlated with cytochrome C oxidase subunit 7A1. IL-33 and ST2 were directly correlated with tumor necrosis factor receptor-associated factor 6 (TRAF6), NF-κB, and nuclear factor of activated T-cells 5 (NFAT5). In individuals with prediabetes, ST2 was inversely correlated with IL-5, whereas IL-33 but not ST2 was directly correlated with MyD88 and NF-κB. In individuals with T2D, ST2 was directly correlated with CCL2, IL-1β, and IRF5. IL-33 and ST2 were directly correlated with MyD88, TRAF6, and NF-κB. CONCLUSION Adipose tissue ST2 and IL-33 show different correlation profiles with various immunometabolic biomarkers depending on the metabolic state of the individuals. Therefore, targeting the IL-33/ST2 axis might form the basis for novel therapies to combat metabolic disorders.
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Affiliation(s)
- Amal Hasan
- Department of Immunology and Microbiology, Dasman Diabetes Institute, Kuwait City, Kuwait
- Correspondence: Amal Hasan Email
| | - Shihab Kochumon
- Department of Immunology and Microbiology, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Ebaa Al-Ozairi
- Clinical Research Unit, Medical Division, Dasman Diabetes Institute, Kuwait City, Kuwait
- Department of Medicine, Faculty of Medicine, Kuwait City, Kuwait
| | - Jaakko Tuomilehto
- Research Division, Dasman Diabetes Institute, Kuwait City, Kuwait
- Department of Public Health, University of Helsinki, Helsinki, Finland
- National School of Public Health, Madrid, Spain
| | - Fahd Al-Mulla
- Department of Genetics and Bioinformatics, Functional Genomics, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Rasheed Ahmad
- Department of Immunology and Microbiology, Dasman Diabetes Institute, Kuwait City, Kuwait
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Lin JD, Yang SF, Wang YH, Fang WF, Tang KT, Cheng CW. Associations of gene polymorphisms in interferon-alpha signature-related genes with autoimmune thyroid diseases. Clin Endocrinol (Oxf) 2019; 91:860-868. [PMID: 31494956 DOI: 10.1111/cen.14090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 08/20/2019] [Accepted: 08/29/2019] [Indexed: 12/28/2022]
Abstract
UNLABELLED Interferon (IFN)-α treatment predisposes patients to the occurrence of autoimmune thyroid disease (AITD). METHODS We investigated associations of single nucleotide polymorphisms (SNPs) of molecules participating in the IFN-α signature, including rs2304204 and rs2304206 of IFN regulatory factor 3 (IRF3), rs1061501 of IRF7, and rs7708392 of TNFA1P3-interacting protein 1 with serum IFN-α levels and AITD in an ethnic Chinese (ie Taiwanese) population. Totally, 319 patients with Graves' disease (GD), 83 patients with Hashimoto's thyroiditis (HT) and 351 healthy controls were recruited. RESULTS There were increased percentages of the C allele, and CC and TC + CC genotypes of rs1061501 in GD patients compared to the controls. HT patients had higher serum IFN-α levels compared to the controls, while there was no difference in serum IFN-α levels between patients with GD and controls. However, patients with GD in a remission status had lower serum IFN-α levels than those without remission. On the other hand, the C allele of rs1061501 was only associated with serum IFN-α levels in patients with HT. CONCLUSIONS The SNP rs1061501 of IRF7 was associated with the development of GD. Serum IFN-α levels were associated with HT, while they might modify the disease status of GD. Moreover, a genetic effect of rs1061501 on regulating serum IFN-α production was observed in HT.
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Affiliation(s)
- Jiunn-Diann Lin
- Division of Endocrinology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Division of Endocrinology and Metabolism, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yuan-Hung Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Medical Research, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Wen-Fang Fang
- Department of Family Medicine, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Kam-Tsun Tang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chao-Wen Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Traditional Herb Medicine Research Center, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Cell Physiology and Molecular Image Research Cente, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
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Zhu KC, Guo HY, Zhang N, Liu BS, Guo L, Jiang SG, Zhang DC. Functional characterization of IRF8 regulation of type II IFN in golden pompano (Trachinotus ovatus). FISH & SHELLFISH IMMUNOLOGY 2019; 94:1-9. [PMID: 31465868 DOI: 10.1016/j.fsi.2019.08.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/20/2019] [Accepted: 08/24/2019] [Indexed: 06/10/2023]
Abstract
Interferon regulatory factor 8 (IRF8) increases type I IFN transcription levels by binding to IFN promoters, thereby playing a role in innate immunity. Nevertheless, the detailed mechanism through which IRF8 regulates type II IFN in fish remains ambiguous. In the present study, two genes from the golden pompano (Trachinotus ovatus), IRF8 (ToIRF8) and IFN gamma (ToIFNγ), were identified in the IFN/IRF-based signalling pathway. The full-length ToIRF8 cDNA was composed of 2,141 bp and encoded a 421 amino acid polypeptide; the genomic DNA was 2,917 bp in length and consisted of 8 exons and 7 introns. The putative protein showed the highest sequence identity (90-92%) with fish IRF8 and possessed a DNA-binding domain (DBD), an IRF-association domain (IAD) and a nuclear localization signal (NLS) motif consistent with those of IRF8 in other vertebrates. Furthermore, the ToIRF8 transcripts were expressed in all examined tissues of healthy fish, with higher levels observed in the central nervous and immune relevant tissues. They were upregulated by polyinosinic acid: polycytidylic acid [poly (I: C)], lipopolysaccharide (LPS) and flagellin treatments in the blood, liver, intestine and kidney. The results from assays of subcellular localization showed that ToIRF8 was localized to the cytoplasm. Moreover, to investigate whether ToIRF8 was a regulator of ToIFNγ, a promoter analysis was performed using progressive deletion mutations of ToIFNγ. The results indicated that the region from -601 bp to -468 bp includes the core promoter. Mutation analyses indicated that the activity of the ToIFNγ promoter significantly decreased after the targeted mutation of the M1-M3 binding sites. Additionally, overexpressed ToIRF8 in vitro notably increased the expression of several IFN/IRF-based signalling pathway genes. These results suggest that IRF8 is vital in the defence of T. ovatus against bacterial infection and contributes to a better understanding of the transcriptional mechanisms of ToIRF8 on type II IFN in fish.
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Affiliation(s)
- Ke-Cheng Zhu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Hua-Yang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Nan Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Bao-Suo Liu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Liang Guo
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Shi-Gui Jiang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China
| | - Dian-Chang Zhang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, PR China; Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, PR China.
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