1
|
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.
Collapse
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.
| |
Collapse
|
2
|
Michalski C, Cheung C, Oh JH, Ackermann E, Popescu CR, Archambault AS, Prusinkiewicz MA, Da Silva R, Majdoubi A, Viñeta Paramo M, Xu RY, Reicherz F, Patterson AE, Golding L, Sharma AA, Lim CJ, Orban PC, Klein Geltink RI, Lavoie PM. DDIT4L regulates mitochondrial and innate immune activities in early life. JCI Insight 2024; 9:e172312. [PMID: 38319716 PMCID: PMC11143921 DOI: 10.1172/jci.insight.172312] [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: 05/15/2023] [Accepted: 01/31/2024] [Indexed: 02/07/2024] Open
Abstract
Pattern recognition receptor responses are profoundly attenuated before the third trimester of gestation in the relatively low-oxygen human fetal environment. However, the mechanisms regulating these responses are uncharacterized. Herein, genome-wide transcription and functional metabolic experiments in primary neonatal monocytes linked the negative mTOR regulator DDIT4L to metabolic stress, cellular bioenergetics, and innate immune activity. Using genetically engineered monocytic U937 cells, we confirmed that DDIT4L overexpression altered mitochondrial dynamics, suppressing their activity, and blunted LPS-induced cytokine responses. We also showed that monocyte mitochondrial function is more restrictive in earlier gestation, resembling the phenotype of DDIT4L-overexpressing U937 cells. Gene expression analyses in neonatal granulocytes and lung macrophages in preterm infants confirmed upregulation of the DDIT4L gene in the early postnatal period and also suggested a potential protective role against inflammation-associated chronic neonatal lung disease. Taken together, these data show that DDIT4L regulates mitochondrial activity and provide what we believe to be the first direct evidence for its potential role supressing innate immune activity in myeloid cells during development.
Collapse
Affiliation(s)
- Christina Michalski
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
| | - Claire Cheung
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
| | - Ju Hee Oh
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Emma Ackermann
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Constantin R. Popescu
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
- Department of Pediatrics, Université Laval, Quebec, Quebec, Canada
| | - Anne-Sophie Archambault
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Martin A. Prusinkiewicz
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
| | - Rachel Da Silva
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Abdelilah Majdoubi
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
| | - Marina Viñeta Paramo
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Women+ and Children′s Health, Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Rui Yang Xu
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Women+ and Children′s Health, Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Frederic Reicherz
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
| | - Annette E. Patterson
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Liam Golding
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
- Women+ and Children′s Health, Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ashish A. Sharma
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, USA
| | - Chinten J. Lim
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
| | - Paul C. Orban
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ramon I. Klein Geltink
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Pascal M. Lavoie
- British Columbia Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics and
- Women+ and Children′s Health, Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
3
|
Chaudhary JK, Ahamad N, Rath PC. Mesenchymal stem cells (MSCs) from the mouse bone marrow show differential expression of interferon regulatory factors IRF-1 and IRF-2. Mol Biol Rep 2024; 51:97. [PMID: 38194130 DOI: 10.1007/s11033-023-09025-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/27/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND Interferon regulatory factors (IRF-1 and IRF-2) are transcription factors widely implicated in various cellular processes, including regulation of inflammatory responses to pathogens, cell proliferation, oncogenesis, differentiation, autophagy, and apoptosis. METHODS We have studied the expression of IRF-1, IRF-2 mRNAs by RT-PCR, cellular localization of the proteins by immunofluorescence, and expression of mRNAs of genes regulated by IRF-1, IRF-2 by RT-PCR in mouse bone marrow cells (BMCs) and mesenchymal stem cells (MSCs). RESULTS Higher level of IRF-1 mRNA was observed in BMCs and MSCs compared to that of IRF-2. Similarly, differential expression of IRF-1 and IRF-2 proteins was observed in BMCs and MSCs. IRF-1 was predominantly localized in the cytoplasm, whereas IRF-2 was localized in the nuclei of BMCs. MSCs showed nucleo-cytoplasmic distribution of IRF-1 and nuclear localization of IRF-2. Constitutive expression of IRF-1 and IRF-2 target genes: monocyte chemoattractant protein-1 (MCP-1), vascular cell adhesion molecule-1 (VCAM-1), cyclooxygenase-2 (COX-2), matrix metalloproteinase-9 (MMP-9), and caspase-1 was observed in both BMCs and MSCs. MSCs showed constitutive expression of the pluripotency-associated factors, Oct3/4 and Sox-2. Lipopolysaccharide (LPS)-treatment of MSCs induced prominent cellular localization of IRF-1 and IRF-2. CONCLUSIONS Our results suggest that IRF-1 and IRF-2 exhibit differential expression of their mRNAs and subcellular localization of the proteins in BMCs and MSCs. These cells also show differential levels of constitutive expression of IRF-1 and IRF-2 target genes. This may regulate immune-responsive properties of BMCs and MSCs through IRF-1, IRF-2-dependent gene expression and protein-protein interaction. Regulating IRF-1 and IRF-2 may be helpful for immunomodulatory functions of MSCs for cell therapy and regenerative medicine.
Collapse
Affiliation(s)
- Jitendra Kumar Chaudhary
- Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Naseem Ahamad
- Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pramod C Rath
- Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| |
Collapse
|
4
|
Gan Z, Cheng J, Hou J, Xia L, Lu Y, Nie P. Molecular and functional characterization of interferon regulatory factor 1 (IRF1) in amphibian Xenopus tropicalis. Int J Biol Macromol 2020; 167:719-725. [PMID: 33279564 DOI: 10.1016/j.ijbiomac.2020.11.217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 12/14/2022]
Abstract
Interferon regulatory factor 1 (IRF1) is an important regulator in controlling the transcription of type I interferon genes, and its functions have been well-characterized in mammals, birds and fish. However, little information is available regarding the function of amphibian IRF1. In this study, an IRF1 gene homolog named as Xt-IRF1 was identified in the Western clawed frog (Xenopus tropicalis), an amphibian model specie widely used for comparative immunology research. Xt-IRF1 and IRF1 in other vertebrates possess similar genomic structure and flanking genes, and were grouped together to form a separate clade in phylogenetic tree. In addition, Xt-IRF1 gene was constitutively expressed in all tissues examined, with the highest expression level observed in spleen, and was inducible after poly(I:C) stimulation. Importantly, the expression of Xt-IRF1 was markedly induced by recombinant type I interferon, and Xt-IRF1 induced a strong activation of both IFNβ and ISRE promoters. The present study opens the door to investigate the roles of IRF1 in amphibians, and thus contributes to a better understanding of the functional evolution of IRFs in lower tetrapods.
Collapse
Affiliation(s)
- Zhen Gan
- Shenzhen Institute of Guangdong Ocean University, Shenzhen 518120, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; College of Fishery, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen 518120, China; Shenzhen Dapeng New District Science and Technology Innovation Service Center, Shenzhen 518120, China
| | - Jun Cheng
- Shenzhen Institute of Guangdong Ocean University, Shenzhen 518120, China; College of Fishery, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen 518120, China
| | - Jing Hou
- Shenzhen Institute of Guangdong Ocean University, Shenzhen 518120, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; College of Fishery, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen 518120, China; Shenzhen Dapeng New District Science and Technology Innovation Service Center, Shenzhen 518120, China
| | - Liqun Xia
- Shenzhen Institute of Guangdong Ocean University, Shenzhen 518120, China; College of Fishery, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen 518120, China
| | - Yishan Lu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen 518120, China; College of Fishery, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen 518120, China.
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| |
Collapse
|
5
|
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.
Collapse
|
6
|
Ahamad N, Rath PC. Expression of interferon regulatory factors (IRF-1 and IRF-2) during radiation-induced damage and regeneration of bone marrow by transplantation in mouse. Mol Biol Rep 2018; 46:551-567. [PMID: 30488374 DOI: 10.1007/s11033-018-4508-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/17/2018] [Indexed: 02/06/2023]
Abstract
Interferon regulatory factors (IRF-1 and IRF-2) are transcription factors of IRF-family that regulate expression of genes for cytokines, chemokines and growth factors in mammalian cells. IRF-1 and IRF-2 play crucial roles in the differentiation of bone marrow cells for immune response. Bone marrow (BM) is the soft lymphoid organ that contains many types of stem cells and produces different types of cells of the blood and immune system. Genetic alterations and damage of the bone marrow cells can lead to different types of blood and immune system-related diseases including anemia and cancer. We have studied the expression of IRF-1 and IRF-2 during radiation-induced damage and regeneration of bone marrow cells after transplantation of freshly isolated bone marrow cells in the mouse. Cell cycle analysis, colony forming unit-fibroblast (CFU-F) assay and bone marrow histology showed that after radiation-induced damage, the bone marrow transplantation resulted in regeneration of the bone marrow up to 24-35% recovery. Real-time quantitative reverse transcription-polymerase chain reaction (Q-RT-PCR) for the mRNA expression showed that IRF-1 and IRF-2 were expressed at higher levels in the bone marrow cells of the irradiated (4.34× fold for IRF-1, and 3.87× fold for IRF-2) compared to control and transplanted (1.13× fold for IRF-1, and 1.12× fold IRF-2) mice and immuno-fluorescence analysis for the protein expression showed that IRF-1 and IRF-2 were expressed at higher levels in the bone marrow cells of the irradiated (2.12× fold for IRF-1 and 1.71× fold for IRF-2) compared to control and transplanted (1.73× fold for IRF-1 and 1.21× fold for IRF-2) mice. Thus, IRF-1 and IRF-2 are sensitive and responsive to radiation-induced damage in the bone marrow cells and may also be involved in the bone marrow regeneration process.
Collapse
Affiliation(s)
- Naseem Ahamad
- Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pramod C Rath
- Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| |
Collapse
|
7
|
Simonson B, Subramanya V, Chan MC, Zhang A, Franchino H, Ottaviano F, Mishra MK, Knight AC, Hunt D, Ghiran I, Khurana TS, Kontaridis MI, Rosenzweig A, Das S. DDiT4L promotes autophagy and inhibits pathological cardiac hypertrophy in response to stress. Sci Signal 2017; 10:10/468/eaaf5967. [PMID: 28246202 DOI: 10.1126/scisignal.aaf5967] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Physiological cardiac hypertrophy, in response to stimuli such as exercise, is considered adaptive and beneficial. In contrast, pathological cardiac hypertrophy that arises in response to pathological stimuli such as unrestrained high blood pressure and oxidative or metabolic stress is maladaptive and may precede heart failure. We found that the transcript encoding DNA damage-inducible transcript 4-like (DDiT4L) was expressed in murine models of pathological cardiac hypertrophy but not in those of physiological cardiac hypertrophy. In cardiomyocytes, DDiT4L localized to early endosomes and promoted stress-induced autophagy through a process involving mechanistic target of rapamycin complex 1 (mTORC1). Exposing cardiomyocytes to various types of pathological stress increased the abundance of DDiT4L, which inhibited mTORC1 but activated mTORC2 signaling. Mice with conditional cardiac-specific overexpression of DDiT4L had mild systolic dysfunction, increased baseline autophagy, reduced mTORC1 activity, and increased mTORC2 activity, all of which were reversed by suppression of transgene expression. Genetic suppression of autophagy also reversed cardiac dysfunction in these mice. Our data showed that DDiT4L may be an important transducer of pathological stress to autophagy through mTOR signaling in the heart and that DDiT4L could be therapeutically targeted in cardiovascular diseases in which autophagy and mTOR signaling play a major role.
Collapse
Affiliation(s)
- Bridget Simonson
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Vinita Subramanya
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Mun Chun Chan
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Aifeng Zhang
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Hannabeth Franchino
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Filomena Ottaviano
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Manoj K Mishra
- Department of Physiology, Pennsylvania Muscle Institute, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
| | - Ashley C Knight
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Danielle Hunt
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Ionita Ghiran
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Tejvir S Khurana
- Department of Physiology, Pennsylvania Muscle Institute, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
| | - Maria I Kontaridis
- Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Anthony Rosenzweig
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Saumya Das
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA 02114, USA. .,Cardiovascular Research Institute, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| |
Collapse
|