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Fergany A, Zong C, Ekuban FA, Wu B, Ueha S, Shichino S, Matsushima K, Iwakura Y, Ichihara S, Ichihara G. Transcriptome analysis of the cerebral cortex of acrylamide-exposed wild-type and IL-1β-knockout mice. Arch Toxicol 2024; 98:181-205. [PMID: 37971544 PMCID: PMC10761544 DOI: 10.1007/s00204-023-03627-9] [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: 09/09/2023] [Accepted: 10/12/2023] [Indexed: 11/19/2023]
Abstract
Acrylamide is an environmental electrophile that has been produced in large amounts for many years. There is concern about the adverse health effects of acrylamide exposure due to its widespread industrial use and also presence in commonly consumed foods and others. IL-1β is a key cytokine that protects the brain from inflammatory insults, but its role in acrylamide-induced neurotoxicity remains unknown. We reported recently that deletion of IL-1β gene exacerbates ACR-induced neurotoxicity in mice. The aim of this study was to identify genes or signaling pathway(s) involved in enhancement of ACR-induced neurotoxicity by IL-1β gene deletion or ACR-induced neurotoxicity to generate a hypothesis mechanism explaining ACR-induced neurotoxicity. C57BL/6 J wild-type and IL-1β KO mice were exposed to ACR at 0, 12.5, 25 mg/kg by oral gavage for 7 days/week for 4 weeks, followed by extraction of mRNA from mice cerebral cortex for RNA sequence analysis. IL-1β deletion altered the expression of genes involved in extracellular region, including upregulation of PFN1 gene related to amyotrophic lateral sclerosis and increased the expression of the opposite strand of IL-1β. Acrylamide exposure enhanced mitochondria oxidative phosphorylation, synapse and ribosome pathways, and activated various pathways of different neurodegenerative diseases, such as Alzheimer disease, Parkinson disease, Huntington disease, and prion disease. Protein network analysis suggested the involvement of different proteins in related to learning and cognitive function, such as Egr1, Egr2, Fos, Nr4a1, and Btg2. Our results identified possible pathways involved in IL-1β deletion-potentiated and ACR-induced neurotoxicity in mice.
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Affiliation(s)
- Alzahraa Fergany
- Department of Occupational and Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Building No. 15, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
- Laboratory of Genetics and Genetic Engineering in Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Cai Zong
- Department of Occupational and Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Building No. 15, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Frederick Adams Ekuban
- Department of Occupational and Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Building No. 15, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Bin Wu
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Satoshi Ueha
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Shigeyuki Shichino
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Yoichiro Iwakura
- Division of Experimental Animal Immunology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Sahoko Ichihara
- Department of Environmental and Preventive Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Gaku Ichihara
- Department of Occupational and Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Building No. 15, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
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Chen L, Chu H, Hu L, Li Z, Yang L, Hou X. The role of NADPH oxidase 1 in alcohol-induced oxidative stress injury of intestinal epithelial cells. Cell Biol Toxicol 2023; 39:2345-2364. [PMID: 35639301 PMCID: PMC10547661 DOI: 10.1007/s10565-022-09725-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/10/2022] [Indexed: 12/17/2022]
Abstract
Alcohol-mediated reactive oxygen species (ROS) play a vital role in intestinal barrier injury. However, the mechanism of ROS accumulation in enterocytes needs to be explored further. In our study, we found that chronic-binge ethanol-fed mice had increased levels of gut oxidative stress and high intestinal permeability. The transcription profiles of the colonic epithelial cells showed that the level of NADPH oxidase 1 (NOX1) was significantly elevated in alcohol-exposed mice compared with isocaloric-exposed mice. In vitro, NOX1 silencing alleviated ROS accumulation and the apoptosis of human colonic epithelial cells (NCM460), while NOX1 overexpression accelerated oxidative stress injury of NCM460 cells. Propionic acid was reduced in the gut of chronic-binge ethanol-fed mice, compared with isocaloric-fed mice, as observed through untargeted metabolomic analysis. Supplementation with propionate relieved ethanol-induced liver and intestinal barrier injuries and reduced the level of ROS accumulation and apoptosis of ethanol-induced colonic epithelial cells. Propionate alleviating NOX1 induced ROS injury of colonic epithelial cells, independent of G protein-coupled receptors. Propionate significantly inhibited histone deacetylase 2 (HDAC2) expressions both in ethanol-exposed colonic epithelial cells and TNF-α-treated NCM460. Chromatin immunoprecipitation (ChIP) assays showed that propionate suppressed the NOX1 expression by regulating histone acetylation in the gene promoter region. In conclusion, NOX1 induces oxidative stress injury of colonic epithelial cells in alcohol-related liver disease. Propionate, which can act as an endogenous HDAC2 inhibitor, can decrease levels of apoptosis of intestinal epithelial cells caused by oxidative stress.
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Affiliation(s)
- Liuying Chen
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Huikuan Chu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Lilin Hu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Zhonglin Li
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Ling Yang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China.
| | - Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China.
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Sfogliarini C, Pepe G, Cesta CM, Allegretti M, Locati M, Vegeto E. The immune activity of selective estrogen receptor modulators is gene and macrophage subtype-specific yet converges on Il1b downregulation. Biomed Pharmacother 2023; 165:115008. [PMID: 37442065 DOI: 10.1016/j.biopha.2023.115008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/29/2023] [Accepted: 06/11/2023] [Indexed: 07/15/2023] Open
Abstract
Raloxifene belongs to the family of Selective Estrogen Receptor Modulators (SERMs), which are drugs widely prescribed for Estrogen Receptor alpha (ERα)-related pathologies. Recently, SERMs are being tested in repurposing strategies for ERα-independent clinical indications, including a wide range of microbial infections. Macrophages are central in the fight against pathogen invasion. Despite estrogens have been shown to regulate macrophage phenotype, SERMs activity in these cells is still poorly defined. We investigated the activity of Raloxifene in comparison with another widely used SERM, Tamoxifen, on immune gene expression in macrophages obtained from mouse and human tissues, including mouse peritoneal macrophages, bone marrow-derived macrophages, microglia or human blood-derived macrophages, assaying for the involvement of the ERα, PI3K and NRF2 pathways also under inflammatory conditions. Our data demonstrate that Raloxifene acts by a dual mechanism, which entails ERα antagonism and off-target mediators. Moreover, micromolar concentrations of Raloxifene increase the expression of immune metabolic genes, such as Vegfa and Hmox1, through PI3K and NRF2 activation selectively in peritoneal macrophages. Conversely, Il1b mRNA down-regulation by SERMs is consistently observed in all macrophage subtypes and unrelated to the PI3K/NRF2 system. Importantly, the production of the inflammatory cytokine TNFα induced by the bacterial endotoxin, LPS, is potentiated by SERMs and paralleled by the cell subtype-specific increase in IL1β secretion. This work extends our knowledge on the biological and molecular mechanisms of SERMs immune activity and indicate macrophages as a pharmacological target for the exploitation of the antimicrobial potential of these drugs.
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Affiliation(s)
- Chiara Sfogliarini
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy.
| | - Giovanna Pepe
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy.
| | | | | | - Massimo Locati
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy; Department of Medical Biotechnology and Translational Medicine, University of Milan, 20133 Milan, Italy.
| | - Elisabetta Vegeto
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy.
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Ali A, Salem M. Genome-wide identification of antisense lncRNAs and their association with susceptibility to Flavobacterium psychrophilum in rainbow trout. Front Immunol 2022; 13:1050722. [PMID: 36561762 PMCID: PMC9763276 DOI: 10.3389/fimmu.2022.1050722] [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: 09/22/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
Eukaryotic genomes encode long noncoding natural antisense transcripts (lncNATs) that have been increasingly recognized as regulatory members of gene expression. Recently, we identified a few antisense transcripts correlating in expression with immune-related genes. However, a systematic genome-wide analysis of lncNATs in rainbow trout is lacking. This study used 134 RNA-Seq datasets from five different projects to identify antisense transcripts. A total of 13,503 lncNATs were identified genome-wide. About 75% of lncNATs showed multiple exons compared to 36.5% of the intergenic lncRNAs. RNA-Seq datasets from resistant, control, and susceptible rainbow trout genetic lines with significant differences in survival rate following Flavobacterium psychrophilum (Fp) infection were analyzed to investigate the potential role of the lncNATs during infection. Twenty-four pairwise comparisons between the different genetic lines, infectious status, and time points revealed 581 differentially expressed (DE) lncNATs and 179 differentially used exons (DUEs). Most of the DE lncNATs strongly and positively correlated in expression with their corresponding sense transcripts across 24 RNA-Seq datasets. LncNATs complementary to genes related to immunity, muscle contraction, proteolysis, and iron/heme metabolism were DE following infection. LncNATs complementary to hemolysis-related genes were DE in the resistant fish compared to susceptible fish on day 5 post-infection, suggesting enhanced clearance of free hemoglobin (Hb) and heme and increased erythropoiesis. LncNATs complementary to hepcidin, a master negative regulator of the plasma iron concentration, were the most downregulated lncNATs on day 5 of bacterial infection in the resistant fish. Ninety-four DE lncNAT, including five complementary to hepcidin, are located within 26 QTL regions previously identified in association with bacterial cold water disease (BCWD) in rainbow trout. Collectively, lncNATs are involved in the molecular architecture of fish immunity and should be further investigated for potential applications in genomic selection and genetic manipulation in aquaculture.
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Eislmayr K, Bestehorn A, Morelli L, Borroni M, Walle LV, Lamkanfi M, Kovarik P. Nonredundancy of IL-1α and IL-1β is defined by distinct regulation of tissues orchestrating resistance versus tolerance to infection. SCIENCE ADVANCES 2022; 8:eabj7293. [PMID: 35235356 PMCID: PMC8890706 DOI: 10.1126/sciadv.abj7293] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 01/05/2022] [Indexed: 06/08/2023]
Abstract
Interleukin-1α (IL-1α) and IL-1β are inflammatory cytokines with important roles in health and disease. They trigger the same receptor and elicit comparable cellular responses but, for poorly understood reasons, are not redundant in vivo. Here, we decoupled IL-1α and IL-1β functions that drive protective responses against invasive infection with group A Streptococcus. IL-1β was essential for pathogen clearance, hence resistance to infection, by inducing granulocyte colony-stimulating factor at the infection site and establishing emergency granulopoiesis. In contrast, IL-1α governed reprogramming of liver metabolic pathways associated with tolerance to infection. The IL-1α-dominated hepatic regulation corresponded to high IL-1α levels in the liver during infection. Conversely, IL-1β was critical for the regulation of the spleen transcriptome, which correlated with ample IL-1β expression in this tissue. The results identify distinct and organ-specific roles of IL-1α versus IL-1β and implicate spatial restriction of their expression and bioavailability during infection as the underlying mechanism.
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Affiliation(s)
- Kevin Eislmayr
- Max Perutz Labs, University of Vienna, Vienna Biocenter (VBC), Dr. Bohr-Gasse 9, A-1030 Vienna, Austria
| | - Annika Bestehorn
- Max Perutz Labs, University of Vienna, Vienna Biocenter (VBC), Dr. Bohr-Gasse 9, A-1030 Vienna, Austria
| | - Luisa Morelli
- Max Perutz Labs, University of Vienna, Vienna Biocenter (VBC), Dr. Bohr-Gasse 9, A-1030 Vienna, Austria
| | - Martina Borroni
- Max Perutz Labs, University of Vienna, Vienna Biocenter (VBC), Dr. Bohr-Gasse 9, A-1030 Vienna, Austria
| | - Lieselotte Vande Walle
- Laboratory of Medical Immunology, Department of Internal Medicine and Pediatrics, Ghent University, C. Heymanslaan 10, 9000 Ghent, Belgium
| | - Mohamed Lamkanfi
- Laboratory of Medical Immunology, Department of Internal Medicine and Pediatrics, Ghent University, C. Heymanslaan 10, 9000 Ghent, Belgium
| | - Pavel Kovarik
- Max Perutz Labs, University of Vienna, Vienna Biocenter (VBC), Dr. Bohr-Gasse 9, A-1030 Vienna, Austria
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6
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Schmerer N, Schulte LN. Long noncoding RNAs in bacterial infection. WILEY INTERDISCIPLINARY REVIEWS-RNA 2021; 12:e1664. [PMID: 33989449 DOI: 10.1002/wrna.1664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 11/10/2022]
Abstract
Infectious and inflammatory diseases remain major causes of mortality and morbidity worldwide. To combat bacterial infections, the mammalian immune system employs a myriad of regulators, which secure the effective initiation of inflammatory responses while preventing pathologies due to overshooting immunity. Recently, the human genome has been shown to be pervasively transcribed and to generate thousands of still poorly characterized long noncoding RNAs (lncRNAs). A growing body of literature suggests that lncRNAs play important roles in the regulatory circuitries controlling innate and adaptive immune responses to bacterial pathogens. This review provides an overview of the roles of lncRNAs in the interaction of human and rodent host cells with bacterial pathogens. Further decoding of the lncRNA networks that underlie pathological inflammation and immune subversion could provide new insights into the host cell mechanisms and microbial strategies that determine the outcome of bacterial infections. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications.
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Affiliation(s)
- Nils Schmerer
- Institute for Lung Research, Philipps-University, Marburg, Germany
| | - Leon N Schulte
- Institute for Lung Research, Philipps-University, Marburg, Germany.,German Center for Lung Research, Giessen, Germany
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7
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Vierbuchen T, Fitzgerald KA. Long non-coding RNAs in antiviral immunity. Semin Cell Dev Biol 2021; 111:126-134. [DOI: 10.1016/j.semcdb.2020.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 06/07/2020] [Accepted: 06/12/2020] [Indexed: 12/15/2022]
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Abstract
The innate immune system relies on a germ-line-encoded repertoire of pattern recognition receptors (PRRs), activated by deeply conserved pathogen signatures, such as bacterial cell wall components or foreign nucleic acids. To enable effective defence against invading pathogens and prevent from deleterious inflammation, PRR-driven immune responses are tightly controlled by a dense network of nuclear and cytoplasmic regulators. Long non-coding RNAs (lncRNAs) are increasingly recognized as important components of these regulatory circuitries, providing positive and negative control of PRR-induced innate immune responses. The present review provides an overview of the presently known roles of lncRNAs in human and murine innate antiviral and antibacterial immunity. The emerging roles in host defence and inflammation suggest that further mechanistic insights into the cellular functions of lncRNAs will decisively advance our molecular understanding of immune-associated diseases and open new avenues for therapeutic intervention.
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Affiliation(s)
- Katharina Walther
- Institute for Lung Research, Philipps University Marburg, Marburg, Germany
| | - Leon N Schulte
- Institute for Lung Research, Philipps University Marburg, Marburg, Germany.,German Center for Lung Research (DZL), Philipps University Marburg, Marburg, Germany
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9
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Lee FFY, Davidson K, Harris C, McClendon J, Janssen WJ, Alper S. NF-κB mediates lipopolysaccharide-induced alternative pre-mRNA splicing of MyD88 in mouse macrophages. J Biol Chem 2020; 295:6236-6248. [PMID: 32179652 DOI: 10.1074/jbc.ra119.011495] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 03/10/2020] [Indexed: 12/14/2022] Open
Abstract
Although a robust inflammatory response is needed to combat infection, this response must ultimately be terminated to prevent chronic inflammation. One mechanism that terminates inflammatory signaling is the production of alternative mRNA splice forms in the Toll-like receptor (TLR) signaling pathway. Whereas most genes in the TLR pathway encode positive mediators of inflammatory signaling, several, including that encoding the MyD88 signaling adaptor, also produce alternative spliced mRNA isoforms that encode dominant-negative inhibitors of the response. Production of these negatively acting alternatively spliced isoforms is induced by stimulation with the TLR4 agonist lipopolysaccharide (LPS); thus, this alternative pre-mRNA splicing represents a negative feedback loop that terminates TLR signaling and prevents chronic inflammation. In the current study, we investigated the mechanisms regulating the LPS-induced alternative pre-mRNA splicing of the MyD88 transcript in murine macrophages. We found that 1) the induction of the alternatively spliced MyD88 form is due to alternative pre-mRNA splicing and not caused by another RNA regulatory mechanism, 2) MyD88 splicing is regulated by both the MyD88- and TRIF-dependent arms of the TLR signaling pathway, 3) MyD88 splicing is regulated by the NF-κB transcription factor, and 4) NF-κB likely regulates MyD88 alternative pre-mRNA splicing per se rather than regulating splicing indirectly by altering MyD88 transcription. We conclude that alternative splicing of MyD88 may provide a sensitive mechanism that ensures robust termination of inflammation for tissue repair and restoration of normal tissue homeostasis once an infection is controlled.
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Affiliation(s)
- Frank Fang-Yao Lee
- Department of Biomedical Research, National Jewish Health, Denver, Colorado 80206; Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado 80206; Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, Colorado 80045
| | - Kevin Davidson
- Pulmonary and Critical Care, WakeMed Hospital, Raleigh, North Carolina 27610
| | - Chelsea Harris
- Department of Biomedical Research, National Jewish Health, Denver, Colorado 80206; Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado 80206; Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, Colorado 80045
| | - Jazalle McClendon
- Department of Medicine, National Jewish Health, Denver, Colorado 80206
| | - William J Janssen
- Department of Medicine, National Jewish Health, Denver, Colorado 80206; Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado 80045
| | - Scott Alper
- Department of Biomedical Research, National Jewish Health, Denver, Colorado 80206; Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado 80206; Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, Colorado 80045.
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Basavappa M, Cherry S, Henao-Mejia J. Long noncoding RNAs and the regulation of innate immunity and host-virus interactions. J Leukoc Biol 2019; 106:83-93. [PMID: 30817056 DOI: 10.1002/jlb.3mir0918-354r] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 12/11/2022] Open
Abstract
Immune responses are both pathogen and cell type-specific. The innate arm of immunity is characterized by rapid intracellular signaling cascades resulting in the production of hundreds of antimicrobial effectors that protect the host organism. Long noncoding RNAs have been shown to operate as potent modulators of both RNA and protein function throughout cell biology. Emerging data suggest that this is also true within innate immunity. LncRNAs have been shown to regulate both innate immune cell identity and the transcription of gene expression programs critical for innate immune responses. Here, we review the diverse roles of lncRNAs within innate defense with a specific emphasis on host-virus interactions.
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Affiliation(s)
- Megha Basavappa
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Department of Microbiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sara Cherry
- Department of Microbiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jorge Henao-Mejia
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Abstract
Inflammatory and infectious diseases are among the main causes of morbidity and mortality worldwide. Inflammation is central to maintenance of organismal homeostasis upon infection, tissue damage, and malignancy. It occurs transiently in response to diverse stimuli (e.g., physical, radioactive, infective, pro-allergenic, or toxic), and in some cases may manifest itself in chronic diseases. To limit the potentially deleterious effects of acute or chronic inflammatory responses, complex transcriptional and posttranscriptional regulatory networks have evolved, often involving nonprotein-coding RNAs (ncRNA). MicroRNAs (miRNAs) are a class of posttranscriptional regulators that control mRNA translation and stability. Long ncRNAs (lncRNAs) are a very diverse group of transcripts >200 nt, functioning among others as scaffolds or decoys both in the nucleus and the cytoplasm. By now, it is well established that miRNAs and lncRNAs are implicated in all major cellular processes including control of cell death, proliferation, or metabolism. Extensive research over the last years furthermore revealed a fundamental role of ncRNAs in pathogen recognition and inflammatory responses. This chapter reviews and summarizes the current knowledge on regulatory ncRNA networks in infection and inflammation.
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Affiliation(s)
- Leon N Schulte
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research (DZL), Philipps-University Marburg, Marburg, Germany
| | - Wilhelm Bertrams
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research (DZL), Philipps-University Marburg, Marburg, Germany
| | - Christina Stielow
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research (DZL), Philipps-University Marburg, Marburg, Germany
| | - Bernd Schmeck
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research (DZL), Philipps-University Marburg, Marburg, Germany.
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12
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Seo W, Taniuchi I. Regulation of hematopoiesis and immune responses by long non-coding RNAs. Int Immunol 2018; 29:165-172. [PMID: 28444293 DOI: 10.1093/intimm/dxx021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/12/2017] [Indexed: 12/19/2022] Open
Abstract
Since the first draft of the human genome sequence was released in 2001, unprecedentedly rapid progress has been made in whole genome-wide approaches by utilizing next-generation-sequencing technologies. The last decade alone has generated enormous data in the forms of exome sequencing, transcriptomes, transcription factor occupancy, genomic variation profiling and epigenetic modifications. One of the most striking realizations from sequencing studies has been the discovery and characterization of non-coding RNAs (ncRNAs). Although the extent to which ncRNAs are functional in vivo is still a controversial topic, there is at least a consensus that some ncRNAs are functional and that they play various roles in biology. Among the several kinds of ncRNAs, long ncRNAs (lncRNAs) in particular have received more attention because they have a larger potential to act as multifunctional regulators. Not surprisingly, researchers in the field of immunology have started to examine ncRNAs as new regulatory mechanisms. In this review, we will summarize some lncRNAs that have been reported to function in the immune system and then argue that there is still a long way to go before we can achieve a complete understanding of lncRNAs.
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Affiliation(s)
- Wooseok Seo
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
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Wyler E, Menegatti J, Franke V, Kocks C, Boltengagen A, Hennig T, Theil K, Rutkowski A, Ferrai C, Baer L, Kermas L, Friedel C, Rajewsky N, Akalin A, Dölken L, Grässer F, Landthaler M. Widespread activation of antisense transcription of the host genome during herpes simplex virus 1 infection. Genome Biol 2017; 18:209. [PMID: 29089033 PMCID: PMC5663069 DOI: 10.1186/s13059-017-1329-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/29/2017] [Indexed: 12/19/2022] Open
Abstract
Background Herpesviruses can infect a wide range of animal species. Herpes simplex virus 1 (HSV-1) is one of the eight herpesviruses that can infect humans and is prevalent worldwide. Herpesviruses have evolved multiple ways to adapt the infected cells to their needs, but knowledge about these transcriptional and post-transcriptional modifications is sparse. Results Here, we show that HSV-1 induces the expression of about 1000 antisense transcripts from the human host cell genome. A subset of these is also activated by the closely related varicella zoster virus. Antisense transcripts originate either at gene promoters or within the gene body, and they show different susceptibility to the inhibition of early and immediate early viral gene expression. Overexpression of the major viral transcription factor ICP4 is sufficient to turn on a subset of antisense transcripts. Histone marks around transcription start sites of HSV-1-induced and constitutively transcribed antisense transcripts are highly similar, indicating that the genetic loci are already poised to transcribe these novel RNAs. Furthermore, an antisense transcript overlapping with the BBC3 gene (also known as PUMA) transcriptionally silences this potent inducer of apoptosis in cis. Conclusions We show for the first time that a virus induces widespread antisense transcription of the host cell genome. We provide evidence that HSV-1 uses this to downregulate a strong inducer of apoptosis. Our findings open new perspectives on global and specific alterations of host cell transcription by viruses. Electronic supplementary material The online version of this article (doi:10.1186/s13059-017-1329-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Emanuel Wyler
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Jennifer Menegatti
- Institute of Virology, Saarland University Medical School, Kirrbergerstrasse, Haus 47, 66421, Homburg/Saar, Germany
| | - Vedran Franke
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Christine Kocks
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Anastasiya Boltengagen
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Thomas Hennig
- Institut für Virologie und Immunbiologie, Julius-Maximilians-Universität Würzburg, Versbacherstr. 7, 97078, Würzburg, Germany
| | - Kathrin Theil
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Andrzej Rutkowski
- Department of Medicine, University of Cambridge, Addenbrookes Hospital, Box 157, Hills Rd, Cambridge, CB2 0QQ, UK.,Present address: AstraZeneca, Darwin Building, 310 Cambridge Science Park, Cambridge, CB4 0WG, UK
| | - Carmelo Ferrai
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Laura Baer
- Institute of Virology, Saarland University Medical School, Kirrbergerstrasse, Haus 47, 66421, Homburg/Saar, Germany
| | - Lisa Kermas
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Caroline Friedel
- Institut für Informatik, Ludwig-Maximilians-Universität München, Amalienstraße 17, 80333, München, Germany
| | - Nikolaus Rajewsky
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Altuna Akalin
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Lars Dölken
- Institut für Virologie und Immunbiologie, Julius-Maximilians-Universität Würzburg, Versbacherstr. 7, 97078, Würzburg, Germany
| | - Friedrich Grässer
- Institute of Virology, Saarland University Medical School, Kirrbergerstrasse, Haus 47, 66421, Homburg/Saar, Germany.
| | - Markus Landthaler
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Robert-Rössle-Strasse 10, 13125, Berlin, Germany. .,IRI Life Sciences, Institute für Biologie, Humboldt Universität zu Berlin, Philippstraße 13, 10115, Berlin, Germany.
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14
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Mowel WK, Kotzin JJ, McCright SJ, Neal VD, Henao-Mejia J. Control of Immune Cell Homeostasis and Function by lncRNAs. Trends Immunol 2017; 39:55-69. [PMID: 28919048 DOI: 10.1016/j.it.2017.08.009] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/03/2017] [Accepted: 08/24/2017] [Indexed: 12/15/2022]
Abstract
The immune system is composed of diverse cell types that coordinate responses to infection and maintain tissue homeostasis. In each of these cells, extracellular cues determine highly specific epigenetic landscapes and transcriptional profiles to promote immunity while maintaining homeostasis. New evidence indicates that long non-coding RNAs (lncRNAs) play crucial roles in epigenetic and transcriptional regulation in mammals. Thus, lncRNAs have emerged as key regulatory molecules of immune cell gene expression programs in response to microbial and tissue-derived cues. We review here how lncRNAs control the function and homeostasis of cell populations during immune responses, emphasizing the diverse molecular mechanisms by which lncRNAs tune highly contextualized transcriptional programs. In addition, we discuss the new challenges faced in interrogating lncRNA mechanisms and function in the immune system.
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Affiliation(s)
- Walter K Mowel
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; These authors contributed equally to this work
| | - Jonathan J Kotzin
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; These authors contributed equally to this work
| | - Sam J McCright
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Vanessa D Neal
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jorge Henao-Mejia
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA.
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15
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Mirza AH, Kaur S, Pociot F. Long non-coding RNAs as novel players in β cell function and type 1 diabetes. Hum Genomics 2017; 11:17. [PMID: 28738846 PMCID: PMC5525349 DOI: 10.1186/s40246-017-0113-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/18/2017] [Indexed: 12/15/2022] Open
Abstract
Background Long non-coding RNAs (lncRNAs) are a sub-class within non-coding RNA repertoire that have emerged as crucial regulators of the gene expression in various pathophysiological conditions. lncRNAs display remarkable versatility and wield their functions through interactions with RNA, DNA, or proteins. Accumulating body of evidence based on multitude studies has highlighted the role of lncRNAs in many autoimmune and inflammatory diseases, including type 1 diabetes (T1D). Main body of abstract This review highlights emerging roles of lncRNAs in immune and islet β cell function as well as some of the challenges and opportunities in understanding the pathogenesis of T1D and its complications. Conclusion We accentuate that the lncRNAs within T1D-loci regions in consort with regulatory variants and enhancer clusters orchestrate the chromatin remodeling in β cells and thereby act as cis/trans-regulatory determinants of islet cell transcriptional programs.
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Affiliation(s)
- Aashiq H Mirza
- CPH-DIRECT, Department of Pediatrics, Herlev University Hospital, Herlev Ringvej 75, DK-2730, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Center for non-coding RNA in Technology and Health, University of Copenhagen, Copenhagen, Denmark
| | - Simranjeet Kaur
- CPH-DIRECT, Department of Pediatrics, Herlev University Hospital, Herlev Ringvej 75, DK-2730, Herlev, Denmark
| | - Flemming Pociot
- CPH-DIRECT, Department of Pediatrics, Herlev University Hospital, Herlev Ringvej 75, DK-2730, Herlev, Denmark. .,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. .,Center for non-coding RNA in Technology and Health, University of Copenhagen, Copenhagen, Denmark.
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16
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Mumtaz PT, Bhat SA, Ahmad SM, Dar MA, Ahmed R, Urwat U, Ayaz A, Shrivastava D, Shah RA, Ganai NA. LncRNAs and immunity: watchdogs for host pathogen interactions. Biol Proced Online 2017; 19:3. [PMID: 28465674 PMCID: PMC5406993 DOI: 10.1186/s12575-017-0052-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 04/06/2017] [Indexed: 01/23/2023] Open
Abstract
Immune responses combat various infectious agents by inducing inflammatory responses, antimicrobial pathways and adaptive immunity. The polygenic responses to these external stimuli are temporally and coordinately regulated. Specific lncRNAs are induced to modulate innate and adaptive immune responses which can function through various target interactions like RNA-DNA, RNA-RNA, and RNA-protein interaction and hence affect the immunogenic regulation at various stages of gene expression. LncRNA are found to be present in various immune cells like monocytes, macrophages, dendritic cells, neutrophils, T cells and B cells. They have been shown to be involved in many biological processes, including the regulation of the expression of genes, the dosage compensation and genomics imprinting, but the knowledge how lncRNAs are regulated and how they alter cell differentiation/function is still obscure. Further dysregulation of lncRNA has been seen in many diseases, but as yet very less research has been carried out to understand the role of lncRNAs in regulation during host-pathogens interactions. In this review, we summarize the functional developments and mechanism of action of lncRNAs, in immunity and defense of host against pathogens.
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Affiliation(s)
- Peerzada Tajamul Mumtaz
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
- School of Life Sciences Jaipur National University, Jaipur, Rajasthan India
| | - Shakil Ahmad Bhat
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Syed Mudasir Ahmad
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Mashooq Ahmad Dar
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Raashid Ahmed
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Uneeb Urwat
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Aadil Ayaz
- Division of Animal Breeding and Genetics, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Divya Shrivastava
- School of Life Sciences Jaipur National University, Jaipur, Rajasthan India
| | - Riaz Ahmad Shah
- Division of Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
| | - Nazir Ahmad Ganai
- Division of Animal Breeding and Genetics, Faculty of Veterinary Sciences and Animal Husbandry, SKUAST-K, Shuhama, Srinagar, Jammu and Kashmir India
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17
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Strategies to identify natural antisense transcripts. Biochimie 2017; 132:131-151. [DOI: 10.1016/j.biochi.2016.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 11/24/2016] [Indexed: 12/15/2022]
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18
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Long non-coding RNAs: Mechanism of action and functional utility. Noncoding RNA Res 2016; 1:43-50. [PMID: 30159410 PMCID: PMC6096411 DOI: 10.1016/j.ncrna.2016.11.002] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 11/09/2016] [Accepted: 11/10/2016] [Indexed: 12/22/2022] Open
Abstract
Recent RNA sequencing studies have revealed that most of the human genome is transcribed, but very little of the total transcriptomes has the ability to encode proteins. Long non-coding RNAs (lncRNAs) are non-coding transcripts longer than 200 nucleotides. Members of the non-coding genome include microRNA (miRNA), small regulatory RNAs and other short RNAs. Most of long non-coding RNA (lncRNAs) are poorly annotated. Recent recognition about lncRNAs highlights their effects in many biological and pathological processes. LncRNAs are dysfunctional in a variety of human diseases varying from cancerous to non-cancerous diseases. Characterization of these lncRNA genes and their modes of action may allow their use for diagnosis, monitoring of progression and targeted therapies in various diseases. In this review, we summarize the functional perspectives as well as the mechanism of action of lncRNAs.
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19
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Elling R, Chan J, Fitzgerald KA. Emerging role of long noncoding RNAs as regulators of innate immune cell development and inflammatory gene expression. Eur J Immunol 2016; 46:504-12. [PMID: 26820238 DOI: 10.1002/eji.201444558] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 12/17/2015] [Accepted: 01/21/2016] [Indexed: 12/22/2022]
Abstract
The innate immune system represents the first line of defense during infection and is initiated by the detection of conserved microbial products by germline-encoded pattern recognition receptors (PRRs). Sensing through PRRs induces broad transcriptional changes that elicit powerful inflammatory responses. Tight regulation of these processes depends on multiple regulatory checkpoints, including noncoding RNA species such as microRNAs. In addition, long noncoding RNAs (lncRNAs) have recently gained attention as important regulators of gene expression acting through versatile interactions with DNA, RNA, or proteins. As such, these RNAs have a multitude of mechanisms to modulate gene expression. Here, we summarize recent advances in this rapidly moving and evolving field. We highlight the contribution of lncRNAs to both the development and activation of innate immune cells, whether it is in the nucleus, where lncRNAs alter the transcription of target genes through interaction with transcription factors, chromatin-modifying complexes or heterogeneous ribonucleoprotein complexes, or in the cytosol where they can control the stability of target mRNAs. In addition, we discuss experimental approaches required to comprehensively investigate the function of a candidate noncoding RNA locus, including loss-of-function approaches encompassing genomic deletions, RNA interference, locked nucleic acids, and various adaptions of the CRISPR/Cas9 technology.
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Affiliation(s)
- Roland Elling
- Program in Innate Immunity, Division of Infectious Diseases, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Jennie Chan
- Program in Innate Immunity, Division of Infectious Diseases, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Katherine A Fitzgerald
- Program in Innate Immunity, Division of Infectious Diseases, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
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20
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Abstract
Precise and dynamic regulation of gene expression is a key feature of immunity. In recent years, rapid advances in transcriptome profiling analysis have led to recognize long non-coding RNAs (lncRNAs) as an additional layer of gene regulation context. In the immune system, lncRNAs are found to be widely expressed in immune cells including monocytes, macrophages, dendritic cells (DC), neutrophils, T cells and B cells during their development, differentiation and activation. However, the functional importance of immune-related lncRNAs is just emerging to be characterized. In this review, we discuss the up-to-date knowledge of lncRNAs in immune regulation.
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Affiliation(s)
- Hua Geng
- Center for Intestinal and Liver Inflammation Research, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Xiao-Di Tan
- Center for Intestinal and Liver Inflammation Research, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Corresponding author. Center for Intestinal and Liver Inflammation Research, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Avenue, Box 217, Chicago, IL 60611, USA. Tel.: +1 (773) 755 6380; fax: +1 (773) 755 6581.
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21
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Chen Z. Progress and prospects of long noncoding RNAs in lipid homeostasis. Mol Metab 2015; 5:164-170. [PMID: 26977388 PMCID: PMC4770261 DOI: 10.1016/j.molmet.2015.12.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 12/10/2015] [Accepted: 12/20/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) are a novel group of universally present, non-coding RNAs (>200 nt) that are increasingly recognized as key regulators of many physiological and pathological processes. SCOPE OF REVIEW Recent publications have shown that lncRNAs influence lipid homeostasis by controlling lipid metabolism in the liver and by regulating adipogenesis. lncRNAs control lipid metabolism-related gene expression by either base-pairing with RNA and DNA or by binding to proteins. MAJOR CONCLUSIONS The recent advances and future prospects in understanding the roles of lncRNAs in lipid homeostasis are discussed.
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Affiliation(s)
- Zheng Chen
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China.
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22
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Zhang Y, Cao X. Long noncoding RNAs in innate immunity. Cell Mol Immunol 2015; 13:138-47. [PMID: 26277893 PMCID: PMC4786632 DOI: 10.1038/cmi.2015.68] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 06/13/2015] [Indexed: 12/15/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have been shown to play important roles in immune cell development and immune responses through different mechanisms, such as dosage compensation, imprinting, enhancer function, and transcriptional regulation. Although the functions of most lncRNAs are unclear, some lncRNAs have been found to control transcriptional or post-transcriptional regulation of the innate and adaptive immune responses via new methods of protein–protein interactions or pairing with DNA and RNA. Interestingly, increasing evidence has elucidated the importance of lncRNAs in the interaction between hosts and pathogens. In this review, an overview of the lncRNAs modes of action, as well as the important and diversified roles of lncRNAs in immunity, are provided, and an emerging paradigm of lncRNAs in regulating innate immune responses is highlighted.
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23
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Wei N, Wang Y, Xu RX, Wang GQ, Xiong Y, Yu TY, Yang GS, Pang WJ. PU.1antisense lncRNA against its mRNA translation promotes adipogenesis in porcine preadipocytes. Anim Genet 2015; 46:133-40. [DOI: 10.1111/age.12275] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2014] [Indexed: 01/31/2023]
Affiliation(s)
- N. Wei
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Y. Wang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - R.-X. Xu
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - G.-Q. Wang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Y. Xiong
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - T.-Y. Yu
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - G.-S. Yang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - W.-J. Pang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
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24
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Carpenter S, Fitzgerald KA. Transcription of inflammatory genes: long noncoding RNA and beyond. J Interferon Cytokine Res 2014; 35:79-88. [PMID: 25250698 DOI: 10.1089/jir.2014.0120] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The innate immune system must coordinate elaborate signaling pathways to turn on expression of hundreds of genes to provide protection against pathogens and resolve acute inflammation. Multiple genes within distinct functional categories are coordinately and temporally regulated by transcriptional on and off switches in response to distinct external stimuli. Three classes of transcription factors act together with transcriptional coregulators and chromatin-modifying complexes to control these programs. In addition, newer studies implicate long noncoding RNA (lncRNA) as additional regulators of these responses. LncRNAs promote, fine-tune, and restrain the inflammatory program. In this study, we provide an overview of gene regulation and the emerging importance of lncRNAs in the immune system.
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Affiliation(s)
- Susan Carpenter
- 1 Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School , Worcester, Massachusetts
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25
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Wei N, Pang W, Wang Y, Xiong Y, Xu R, Wu W, Zhao C, Yang G. Knockdown of PU.1 mRNA and AS lncRNA regulates expression of immune-related genes in zebrafish Danio rerio. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 44:315-319. [PMID: 24463314 DOI: 10.1016/j.dci.2014.01.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/15/2014] [Accepted: 01/16/2014] [Indexed: 06/03/2023]
Abstract
The transcription factor PU.1 plays a key role in the development of immune system. Recent evidence demonstrated bidirectional transcription and a sense/antisense transcriptional regulatory manner in PU.1 locus. However, the effect of PU.1 mRNA and its antisense long non-coding RNA (AS lncRNA) on adaptive immunity in vivo is still not clear. In this study, we first confirmed the expression of PU.1 AS lncRNA by strand-specific RT-PCR in zebrafish. Additionally, we found that GFP was detected in zebrafish kidney using tissue smears after zebrafish was intraperitoneally injected with pLentiHI-PU.1 shRNA or pLentiHI-PU.1 AS shRNA for 2 days. Moreover, on day 0, 2 and 4, the levels of PU.1 and immune-related genes including TCRAC, Rag2, AID, IgLC-1, mIg, and sIg mRNAs were detected using real-time qPCR. The results showed that the levels of PU.1 and above 6 immune-related gene mRNAs were significantly downregulated on day 2 (P<0.05) and day 4 (P<0.01) by the treatment with the pLentiHI-PU.1 shRNA, whereas these genes were markedly upregulated by the treatment with the pLentiHI-PU.1 AS shRNA. Based on our results, we suggested that the effects of PU.1 transcripts including mRNA and AS lncRNA on immune-related gene expression in zebrafish were opposite. To our knowledge, this was the first report that a novel functional AS lncRNA in adaptive immunity was transcribed from the zebrafish PU.1 locus. Our findings provided novel insight into further exploration on modulating adaptive immunity by regulating PU.1 mRNA and AS lncRNA.
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Affiliation(s)
- Ning Wei
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Weijun Pang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.
| | - Yu Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yan Xiong
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Ruxiang Xu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Wenjing Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Cunzhen Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Gongshe Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
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26
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Khorkova O, Myers AJ, Hsiao J, Wahlestedt C. Natural antisense transcripts. Hum Mol Genet 2014; 23:R54-63. [PMID: 24838284 DOI: 10.1093/hmg/ddu207] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Recent years have seen the increasing understanding of the crucial role of RNA in the functioning of the eukaryotic genome. These discoveries, fueled by the achievements of the FANTOM, and later GENCODE and ENCODE consortia, led to the recognition of the important regulatory roles of natural antisense transcripts (NATs) arising from what was previously thought to be 'junk DNA'. Roughly defined as non-coding regulatory RNA transcribed from the opposite strand of a coding gene locus, NATs are proving to be a heterogeneous group with high potential for therapeutic application. Here, we attempt to summarize the rapidly growing knowledge about this important non-coding RNA subclass.
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Affiliation(s)
- Olga Khorkova
- OPKO Health Inc., 10320 USA Today Way, Miramar, FL 33025, USA
| | | | - Jane Hsiao
- OPKO Health Inc., 10320 USA Today Way, Miramar, FL 33025, USA
| | - Claes Wahlestedt
- Department of Psychiatry and Behavioral Sciences and Center for Therapeutic Innovation, University of Miami Miller School of Medicine, 1501 NW 10th Avenue, Miami, FL 33136, USA
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27
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Kadakkuzha BM, Liu XA, Narvaez M, Kaye A, Akhmedov K, Puthanveettil SV. Asymmetric localization of natural antisense RNA of neuropeptide sensorin in Aplysia sensory neurons during aging and activity. Front Genet 2014; 5:84. [PMID: 24795747 PMCID: PMC4001032 DOI: 10.3389/fgene.2014.00084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 03/29/2014] [Indexed: 11/21/2022] Open
Abstract
Despite the advances in our understanding of transcriptome, regulation and function of its non-coding components continue to be poorly understood. Here we searched for natural antisense transcript for sensorin (NAT-SRN), a neuropeptide expressed in the presynaptic sensory neurons of gill-withdrawal reflex of the marine snail Aplysia californica. Sensorin (SRN) has a key role in learning and long-term memory storage in Aplysia. We have now identified NAT-SRN in the central nervous system (CNS) and have confirmed its expression by northern blotting and fluorescent RNA in situ hybridization. Quantitative analysis of NAT-SRN in micro-dissected cell bodies and processes of sensory neurons suggest that NAT-SRN is present in the distal neuronal processes along with sense transcripts. Importantly, aging is associated with reduction in levels of NAT-SRN in sensory neuron processes. Furthermore, we find that forskolin, an activator of CREB signaling, differentially alters the distribution of SRN and NAT-SRN. These studies reveal novel insights into physiological regulation of natural antisense RNAs.
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Affiliation(s)
- Beena M Kadakkuzha
- Department of Neuroscience, The Scripps Research Institute Jupiter, FL, USA
| | - Xin-An Liu
- Department of Neuroscience, The Scripps Research Institute Jupiter, FL, USA
| | - Maria Narvaez
- Department of Neuroscience, The Scripps Research Institute Jupiter, FL, USA
| | - Alexandra Kaye
- Department of Neuroscience, The Scripps Research Institute Jupiter, FL, USA
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