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Collier JJ, Hsia DS, Burke SJ. From pre-clinical efficacy to promising clinical trials that delay Type 1 diabetes. Pharmacol Res 2024; 208:107342. [PMID: 39142538 DOI: 10.1016/j.phrs.2024.107342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 08/02/2024] [Accepted: 08/05/2024] [Indexed: 08/16/2024]
Abstract
Recent advancements in immunology and islet biology have unveiled remarkable prospects for the postponement of Type 1 diabetes (T1D) through the strategic modulation of the immune system. In this Perspective, we discuss the pharmaceutical strides achieved, traversing from pre-clinical validation to the execution of impactful clinical trials. We begin with the initial investigations involving cyclosporine and glucocorticoids in rodent models, such as the non-obese diabetic (NOD) mouse, which guided early clinical trials. We then discuss the pre-clinical studies using suitable mouse models that eventually led to contemporary clinical trials targeting immune cell functionality and cytokine signaling pathways. Collectively, these discoveries promote the exciting paradigm of immune system modulation to mitigate autoimmunity, which continues to broaden. Notably, the use of baricitinib, a potent JAK1/2 inhibitor, and teplizumab, an anti-CD3 monoclonal antibody, represent discrete methodologies converging upon a singular outcome: the preservation of islet beta-cell functionality. The latter interventional strategies build on the original idea that tempering specific facets of the immune system will generate therapeutic benefit. Enthusiasm from these discoveries stems from efficacy with reduced side effects when compared with past approaches. The success of therapeutic intervention(s) in pre-clinical studies, combined with knowledge about stages of progression to clinical T1D, have ultimately encouraged the design of more successful clinical trials targeting highly specific populations at risk. Collectively, these findings instill a profound sense of optimism, suggesting that the prevention and even reversal of T1D may soon be within reach.
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Affiliation(s)
- J Jason Collier
- Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA.
| | - Daniel S Hsia
- Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Division of Endocrinology, Emory University School of Medicine, Atlanta, GA 30322, USA; Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; Center for Gastroenterology, Endocrinology, & Nutrition, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Susan J Burke
- Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
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Kochumon S, Al-Sayyar A, Jacob T, Arefanian H, Bahman F, Almansour N, Alzaid F, Al-Mulla F, Sindhu S, Ahmad R. IL-1β-Induced CXCL10 Expression in THP-1 Monocytic Cells Involves the JNK/c-Jun and NF-κB-Mediated Signaling. Pharmaceuticals (Basel) 2024; 17:823. [PMID: 39065674 PMCID: PMC11279630 DOI: 10.3390/ph17070823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 07/28/2024] Open
Abstract
CXCL10 (IP-10) plays a key role in leukocyte homing to the inflamed tissues and its increased levels are associated with the pathophysiology of various inflammatory diseases including obesity and type 2 diabetes. IL-1β is a key proinflammatory cytokine that is found upregulated in meta-inflammatory conditions and acts as a potent activator, inducing the expression of cytokines/chemokines by immune cells. However, it is unclear whether IL-1β induces the expression of CXCL10 in monocytic cells. We, therefore, determined the CXCL10 induction using IL-1β in THP1 monocytic cells and investigated the mechanisms involved. Monocytes (human monocytic THP-1 cells) were stimulated with IL-1β. CXCL10 gene expression was determined with real-time RT-PCR. CXCL10 protein was determined using ELISA. Signaling pathways were identified by using Western blotting, inhibitors, siRNA transfections, and kinase assay. Our data show that IL-1β induced the CXCL10 expression at both mRNA and protein levels in monocytic cells (p = 0.0001). Notably, only the JNK inhibitor (SP600125) significantly suppressed the IL-1β-induced CXCL10 expression, while the inhibitors of MEK1/2 (U0126), ERK1/2 (PD98059), and p38 MAPK (SB203580) had no significant effect. Furthermore, IL-1β-induced CXCL10 expression was decreased in monocytic cells deficient in JNK/c-Jun. Accordingly, inhibiting the JNK kinase activity markedly reduced the IL-1β-induced JNK/c-Jun phosphorylation in monocytic cells. NF-κB inhibition by Bay-117085 and resveratrol also suppressed the CXCL10 expression. Our findings provide preliminary evidence that IL-1β stimulation induces the expression of CXCL10 in monocytic cells which requires signaling via the JNK/c-Jun/NF-κB axis.
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Affiliation(s)
- Shihab Kochumon
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
| | - Amnah Al-Sayyar
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Université, Inserm, 13288 Marseille, France;
| | - Texy Jacob
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
| | - Hossein Arefanian
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
| | - Fatemah Bahman
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
| | - Nourah Almansour
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
| | - Fawaz Alzaid
- Bioenergetics & Neurometabolism Department, Dasman Diabetes Institute, Dasman 15462, Kuwait;
- Institut Necker Enfants Malades (INEM), INSERM U1151/CNRS UMRS8253, IMMEDIAB, Université deParis Cité, 75015 Paris, France
| | - Fahd Al-Mulla
- Translational Research Department, Dasman Diabetes Institute, Dasman 15462, Kuwait;
| | - Sardar Sindhu
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
- Animal & Imaging Core Facilities, Dasman Diabetes Institute, Dasman 15462, Kuwait
| | - Rasheed Ahmad
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (T.J.); (H.A.); (F.B.); (N.A.); (S.S.)
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3
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Madsen HB, Park JH, Chu X, Hou Y, Li Z, Rasmussen LJ, Croteau DL, Bohr VA, Akbari M. The cGAS-STING signaling pathway is modulated by urolithin A. Mech Ageing Dev 2024; 217:111897. [PMID: 38109974 DOI: 10.1016/j.mad.2023.111897] [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: 06/30/2023] [Revised: 11/21/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023]
Abstract
During aging, general cellular processes, including autophagic clearance and immunological responses become compromised; therefore, identifying compounds that target these cellular processes is an important approach to improve our health span. The innate immune cGAS-STING pathway has emerged as an important signaling system in the organismal defense against viral and bacterial infections, inflammatory responses to cellular damage, regulation of autophagy, and tumor immunosurveillance. These key functions of the cGAS-STING pathway make it an attractive target for pharmacological intervention in disease treatments and in controlling inflammation and immunity. Here, we show that urolithin A (UA), an ellagic acid metabolite, exerts a profound effect on the expression of STING and enhances cGAS-STING activation and cytosolic DNA clearance in human cell lines. Animal laboratory models and limited human trials have reported no obvious adverse effects of UA administration. Thus, the use of UA alone or in combination with other pharmacological compounds may present a potential therapeutic approach in the treatment of human diseases that involves aberrant activation of the cGAS-STING pathway or accumulation of cytosolic DNA and this warrants further investigation in relevant transgenic animal models.
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Affiliation(s)
- H B Madsen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, SUND, University of Copenhagen, 2200, Copenhagen N, Denmark
| | - J-H Park
- Section on DNA repair, National Institute on Aging, 251 Bayview Blvd, Baltimore, MD, USA
| | - X Chu
- Section on DNA repair, National Institute on Aging, 251 Bayview Blvd, Baltimore, MD, USA
| | - Y Hou
- Section on DNA repair, National Institute on Aging, 251 Bayview Blvd, Baltimore, MD, USA; Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Z Li
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, SUND, University of Copenhagen, 2200, Copenhagen N, Denmark
| | - L J Rasmussen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, SUND, University of Copenhagen, 2200, Copenhagen N, Denmark
| | - D L Croteau
- Section on DNA repair, National Institute on Aging, 251 Bayview Blvd, Baltimore, MD, USA; Laboratory of Genetics and Genomics, Computational Biology and Genomics Core, National Institute on Aging, 251 Bayview Blvd, Baltimore, USA
| | - V A Bohr
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, SUND, University of Copenhagen, 2200, Copenhagen N, Denmark; Section on DNA repair, National Institute on Aging, 251 Bayview Blvd, Baltimore, MD, USA.
| | - M Akbari
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, SUND, University of Copenhagen, 2200, Copenhagen N, Denmark; Department of Medical Biology, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway.
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Batdorf HM, Lawes LDL, Richardson JT, Burk DH, Dupuy SD, Karlstad MD, Noland RC, Burke SJ, Collier JJ. NOD mice have distinct metabolic and immunologic profiles when compared with genetically similar MHC-matched ICR mice. Am J Physiol Endocrinol Metab 2023; 325:E336-E345. [PMID: 37610410 PMCID: PMC10642984 DOI: 10.1152/ajpendo.00033.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 08/18/2023] [Accepted: 08/18/2023] [Indexed: 08/24/2023]
Abstract
Nonobese diabetic (NOD) mice are the most commonly used rodent model to study mechanisms relevant to the autoimmunity and immunology of type 1 diabetes. Although many different strains of mice have been used as controls for studies comparing nondiabetic lines to the NOD strain, we hypothesized that the parental strain that gave rise to the NOD line might be one of the best options. Therefore, we compared female ICR and NOD mice, which are matched at key major histocompatibility complex (MHC) loci, to understand their metabolic and immunologic similarities and differences. Several novel observations emerged: 1) NOD mice have greater circulating proinsulin when compared with ICR mice. 2) NOD mice display CD3+ and IBA1+ cell infiltration into and near pancreatic islets before hyperglycemia. 3) NOD mice show increased expression of the Il1b and Cxcl11 genes in islets when compared with islets from age-matched ICR mice. 4) NOD mice have a greater abundance of STAT1 and ICAM-1 protein in islets when compared with ICR mice. These data show that ICR mice, which are genetically similar to NOD mice, do not retain the same immunologic outcomes. Thus, ICR mice are an excellent choice as a genetically similar and MHC-matched control for NOD mice in studies designed to understand mechanisms relevant to autoimmune-mediated diabetes onset as well as novel therapeutic interventions.NEW & NOTEWORTHY Nonobese diabetic (NOD) mice have more proinsulin in circulation and STAT1 protein in islets compared with the major histocompatibility complex (MHC)-matched ICR line. NOD mice also display greater expression of cytokines and chemokines in pancreatic islets consistent with immune cell infiltration before hyperglycemia when compared with age-matched ICR mice. Thus, ICR mice represent an excellent control for autoimmunity and inflammation studies using the NOD line of mice.
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Affiliation(s)
- Heidi M Batdorf
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - Luz de Luna Lawes
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - Jeremy T Richardson
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - David H Burk
- Cell Biology and Bioimaging Core Facility, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - Samuel D Dupuy
- Department of Surgery, Graduate School of Medicine, University of Tennessee Health Science Center, Knoxville, Tennessee, United States
| | - Michael D Karlstad
- Department of Surgery, Graduate School of Medicine, University of Tennessee Health Science Center, Knoxville, Tennessee, United States
| | - Robert C Noland
- Skeletal Muscle Metabolism Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - Susan J Burke
- Laboratory of Immunogenetics, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - J Jason Collier
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
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Seo YN, Baik JS, Lee SM, Lee JE, Ahn HR, Lim MS, Park MT, Kim SD. Ionizing Radiation Selectively Increases CXC Ligand 10 Level via the DNA-Damage-Induced p38 MAPK-STAT1 Pathway in Murine J774A.1 Macrophages. Cells 2023; 12:cells12071009. [PMID: 37048082 PMCID: PMC10093567 DOI: 10.3390/cells12071009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/09/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Ionizing radiation (IR) is an important means of tumor treatment in addition to surgery and drugs. Attempts have been made to improve the efficiency of radiotherapy by identifying the various biological effects of IR on cells. Components of the tumor microenvironment, such as macrophages, fibroblasts, and vascular endothelial cells, influence cancer treatment outcomes through communication with tumor cells. In this study, we found that IR selectively increased the production of CXC motif chemokine ligand 10 (CXCL10), which is emerging as an important biomarker for determining the prognosis of anticancer treatments, without changing the levels of CXCL9 and CXCL11 in murine J774A.1 macrophages. Pretreatment with KU55933, an ataxia telangiectasia mutated (ATM) kinase inhibitor, significantly inhibited IR-induced CXCL10 production. In contrast, pretreatment with N-acetyl-cysteine or glutathione, a reactive oxygen species scavenger, did not inhibit IR-induced CXCL10 production. Further, we attempted to identify the intracellular molecular target associated with the IR-induced increase in CXCL10 secretion by J774A.1 macrophages. IR phosphorylated p38 mitogen-activated protein kinase (MAPK) and signal transducer and activator of transcription 1 (STAT1) in J774A.1 macrophages, and p38 MAPK and STAT1 were involved in CXCL10 via IR using pharmacological inhibitors (SB203580 and fludarabine, respectively) and the siRNA technique.
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Affiliation(s)
- You Na Seo
- Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan 46033, Republic of Korea
- Department of Microbiology and Immunology, College of Medicine, Inge University, Busan 47392, Republic of Korea
| | - Ji Sue Baik
- Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan 46033, Republic of Korea
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Republic of Korea
| | - Song Mi Lee
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Republic of Korea
| | - Ji Eun Lee
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Republic of Korea
| | - Hye Rim Ahn
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Republic of Korea
| | - Min Seo Lim
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Republic of Korea
| | - Moon-Taek Park
- Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan 46033, Republic of Korea
- Correspondence: (M.-T.P.); (S.D.K.)
| | - Sung Dae Kim
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Republic of Korea
- Correspondence: (M.-T.P.); (S.D.K.)
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Neural-Cell-Intrinsic NF-κB Signaling Enhances Reovirus Virulence. J Virol 2023; 97:e0144222. [PMID: 36541803 PMCID: PMC9888206 DOI: 10.1128/jvi.01442-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Pathological effects of apoptosis associated with viral infections of the central nervous system are an important cause of morbidity and mortality. Reovirus is a neurotropic virus that causes apoptosis in neurons, leading to lethal encephalitis in newborn mice. Reovirus-induced encephalitis is diminished in mice with germ line ablation of NF-κB subunit p50. It is not known whether the proapoptotic function of NF-κB is mediated by neural-cell-intrinsic (neural-intrinsic) processes, NF-κB-regulated cytokine production by inflammatory cells, or a combination of both. To determine the contribution of cell type-specific NF-κB signaling in reovirus-induced neuronal injury, we established mice that lack NF-κB p65 expression in neural cells using the Cre/loxP recombination system. Following intracranial inoculation of reovirus, 50% of wild-type (WT) mice succumbed to infection, whereas more than 90% of mice lacking neural cell NF-κB p65 (Nsp65-/-) survived. While viral loads in brains of WT and Nsp65-/- mice were comparable, histological analysis revealed that reovirus antigen-positive areas in the brains of WT mice displayed increased immunoreactivity for cleaved caspase-3, a marker of apoptosis, relative to Nsp65-/- mice. These data suggest that neural-intrinsic NF-κB-dependent factors are essential mediators of reovirus neurovirulence. RNA sequencing analysis of reovirus-infected brain cortices of WT and Nsp65-/- mice suggests that NF-κB activation in neuronal cells upregulates genes involved in innate immunity, inflammation, and cell death following reovirus infection. A better understanding of the contribution of cell type-specific NF-κB-dependent signaling to viral neuropathogenesis could inform development of new therapeutics that target and protect highly vulnerable cell populations. IMPORTANCE Viral encephalitis contributes to illness and death in children and adults worldwide and has limited treatment options. Identifying common host factors upregulated by neurotropic viruses can enhance an understanding of virus-induced neuropathogenesis and aid in development of therapeutics. Although many neurotropic viruses activate NF-κB during infection, mechanisms by which NF-κB regulates viral neuropathogenesis and contributes to viral encephalitis are not well understood. We established mice in which NF-κB expression is ablated in neural tissue to study the function of NF-κB in reovirus neurovirulence and identify genes activated by NF-κB in response to reovirus infection in the central nervous system. Encephalitis following reovirus infection was dampened in mice lacking neural cell NF-κB. Reovirus induced a chemokine profile in the brain that was dependent on NF-κB signaling and was similar to chemokine profiles elicited by other neurotropic viruses. These data suggest common underlying mechanisms of encephalitis caused by neurotropic viruses and potentially shared therapeutic targets.
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Bello-Perez M, Hurtado-Tamayo J, Requena-Platek R, Canton J, Sánchez-Cordón PJ, Fernandez-Delgado R, Enjuanes L, Sola I. MERS-CoV ORF4b is a virulence factor involved in the inflammatory pathology induced in the lungs of mice. PLoS Pathog 2022; 18:e1010834. [PMID: 36129908 PMCID: PMC9491562 DOI: 10.1371/journal.ppat.1010834] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/26/2022] [Indexed: 01/18/2023] Open
Abstract
No vaccines or specific antiviral drugs are authorized against Middle East respiratory syndrome coronavirus (MERS-CoV) despite its high mortality rate and prevalence in dromedary camels. Since 2012, MERS-CoV has been causing sporadic zoonotic infections in humans, which poses a risk of genetic evolution to become a pandemic virus. MERS-CoV genome encodes five accessory proteins, 3, 4a, 4b, 5 and 8b for which limited information is available in the context of infection. This work describes 4b as a virulence factor in vivo, since the deletion mutant of a mouse-adapted MERS-CoV-Δ4b (MERS-CoV-MA-Δ4b) was completely attenuated in a humanized DPP4 knock-in mouse model, resulting in no mortality. Attenuation in the absence of 4b was associated with a significant reduction in lung pathology and chemokine expression levels at 4 and 6 days post-infection, suggesting that 4b contributed to the induction of lung inflammatory pathology. The accumulation of 4b in the nucleus in vivo was not relevant to virulence, since deletion of its nuclear localization signal led to 100% mortality. Interestingly, the presence of 4b protein was found to regulate autophagy in the lungs of mice, leading to upregulation of BECN1, ATG3 and LC3A mRNA. Further analysis in MRC-5 cell line showed that, in the context of infection, MERS-CoV-MA 4b inhibited autophagy, as confirmed by the increase of p62 and the decrease of ULK1 protein levels, either by direct or indirect mechanisms. Together, these results correlated autophagy activation in the absence of 4b with downregulation of a pathogenic inflammatory response, thus contributing to attenuation of MERS-CoV-MA-Δ4b.
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Affiliation(s)
- Melissa Bello-Perez
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
| | - Jesús Hurtado-Tamayo
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
| | - Ricardo Requena-Platek
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
| | - Javier Canton
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
| | - Pedro José Sánchez-Cordón
- Veterinary Pathology Department, Animal Health Research Center (CISA), National Institute of Research, Agricultural and Food Technology (INIA-CSIC), Valdeolmos, Madrid, Spain
| | - Raúl Fernandez-Delgado
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
| | - Luis Enjuanes
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
| | - Isabel Sola
- Department of Molecular and Cell Biology, National Center of Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin, Madrid, Spain
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Martin TM, Burke SJ, Batdorf HM, Burk DH, Ghosh S, Dupuy SD, Karlstad MD, Collier JJ. ICAM-1 Abundance Is Increased in Pancreatic Islets of Hyperglycemic Female NOD Mice and Is Rapidly Upregulated by NF-κB in Pancreatic β-Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:569-581. [PMID: 35851539 PMCID: PMC9845432 DOI: 10.4049/jimmunol.2200065] [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: 01/19/2022] [Accepted: 05/24/2022] [Indexed: 01/04/2023]
Abstract
Type 1 diabetes (T1D) is classified as an autoimmune disease where pancreatic β-cells are specifically targeted by cells of the immune system. The molecular mechanisms underlying this process are not completely understood. Herein, we identified that the Icam1 gene and ICAM-1 protein were selectively elevated in female NOD mice relative to male mice, fitting with the sexual dimorphism of diabetes onset in this key mouse model of T1D. In addition, ICAM-1 abundance was greater in hyperglycemic female NOD mice than in age-matched normoglycemic female NOD mice. Moreover, we discovered that the Icam1 gene was rapidly upregulated in response to IL-1β in mouse, rat, and human islets and in 832/13 rat insulinoma cells. This early temporal genetic regulation requires key components of the NF-κB pathway and was associated with rapid recruitment of the p65 transcriptional subunit of NF-κB to corresponding κB elements within the Icam1 gene promoter. In addition, RNA polymerase II recruitment to the Icam1 gene promoter in response to IL-1β was consistent with p65 occupancy at κB elements, histone chemical modifications, and increased mRNA abundance. Thus, we conclude that β-cells undergo rapid genetic reprogramming by IL-1β to enhance expression of the Icam1 gene and that elevations in ICAM-1 are associated with hyperglycemia in NOD mice. These findings are highly relevant to, and highlight the importance of, pancreatic β-cell communication with the immune system. Collectively, these observations reveal a portion of the complex molecular events associated with onset and progression of T1D.
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Affiliation(s)
- Thomas M. Martin
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center Baton Rouge LA 70808 USA
| | - Susan J. Burke
- Laboratory of Immunogenetics, Pennington Biomedical Research Center Baton Rouge LA 70808 USA
| | - Heidi M. Batdorf
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center Baton Rouge LA 70808 USA
| | - David H. Burk
- Cell Biology and Bioimaging Core, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Sujoy Ghosh
- Laboratory of Computational Biology, Pennington Biomedical Research Center, Baton Rouge, LA, United States
- Centre for Computational Biology and Program in Cardiovascular and Metabolic Disorders, Duke NUS Medical School, Singapore
| | - Samuel D. Dupuy
- Department of Surgery, University of Tennessee Health Science Center, Knoxville, TN, 37920, USA
| | - Michael D. Karlstad
- Department of Surgery, University of Tennessee Health Science Center, Knoxville, TN, 37920, USA
| | - J. Jason Collier
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center Baton Rouge LA 70808 USA
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Cytokine Responses to Adenovirus and Adenovirus Vectors. Viruses 2022; 14:v14050888. [PMID: 35632630 PMCID: PMC9145601 DOI: 10.3390/v14050888] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 12/15/2022] Open
Abstract
The expression of cytokines and chemokines in response to adenovirus infection is tightly regulated by the innate immune system. Cytokine-mediated toxicity and cytokine storm are known clinical phenomena observed following naturally disseminated adenovirus infection in immunocompromised hosts as well as when extremely high doses of adenovirus vectors are injected intravenously. This dose-dependent, cytokine-mediated toxicity compromises the safety of adenovirus-based vectors and represents a critical problem, limiting their utility for gene therapy applications and the therapy of disseminated cancer, where intravenous injection of adenovirus vectors may provide therapeutic benefits. The mechanisms triggering severe cytokine response are not sufficiently understood, prompting efforts to further investigate this phenomenon, especially in clinically relevant settings. In this review, we summarize the current knowledge on cytokine and chemokine activation in response to adenovirus- and adenovirus-based vectors and discuss the underlying mechanisms that may trigger acute cytokine storm syndrome. First, we review profiles of cytokines and chemokines that are activated in response to adenovirus infection initiated via different routes. Second, we discuss the molecular mechanisms that lead to cytokine and chemokine transcriptional activation. We further highlight how immune cell types in different organs contribute to synthesis and systemic release of cytokines and chemokines in response to adenovirus sensing. Finally, we review host factors that can limit cytokine and chemokine expression and discuss currently available and potential future interventional approaches that allow for the mitigation of the severity of the cytokine storm syndrome. Effective cytokine-targeted interventional approaches may improve the safety of systemic adenovirus delivery and thus broaden the potential clinical utility of adenovirus-based therapeutic vectors.
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Liang Z, He P, Han Y, Yun CC. Survival of Stem Cells and Progenitors in the Intestine Is Regulated by LPA 5-Dependent Signaling. Cell Mol Gastroenterol Hepatol 2022; 14:129-150. [PMID: 35390517 PMCID: PMC9120264 DOI: 10.1016/j.jcmgh.2022.03.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Regeneration of the epithelium by stem cells in the intestine is supported by intrinsic and extrinsic factors. Lysophosphatidic acid (LPA), a bioactive lipid mediator, regulates many cellular functions, including cell proliferation, survival, and cytokine secretion. Here, we identify LPA5 receptor as a potent regulator of the survival of stem cells and transit-amplifying cells in the intestine. METHODS We have used genetic mouse models of conditional deletion of Lpar5, Lpar5f/f;Rosa-CreERT (Lpar5KO), and intestinal epithelial cell-specific Lpar5f/f;AhCre (Lpar5IECKO) mice. Mice were treated with tamoxifen or β-naphthoflavone to delete Lpar5 expression. Enteroids derived from these mice were used to determine the effect of Lpar5 loss on the apoptosis and proliferation of crypt epithelial cells. RESULTS Conditional loss of Lpar5 induced ablation of the intestinal mucosa, which increased morbidity of Lpar5KO mice. Epithelial regeneration was compromised with increased apoptosis and decreased proliferation of crypt epithelial cells by Lpar5 loss. Interestingly, intestinal epithelial cell-specific Lpar5 loss did not cause similar phenotypic defects in vivo. Lpar5 loss reduced intestinal stem cell marker gene expression and reduced lineage tracing from Lgr5+ ISCs. Lpar5 loss induced CXCL10 expression which exerts cytotoxic effects on intestinal stem cells and progenitors in the intestinal crypts. By co-culturing Lpar5KO enteroids with wild-type or Lpar5KO splenocytes, we demonstrated that lymphocytes protect the intestinal crypts via a LPA5-dependent suppression of CXCL10. CONCLUSIONS LPA5 is essential for the regeneration of intestinal epithelium. Our findings reveal a new finding that LPA5 regulates survival of stem cells and transit-amplifying cells in the intestine.
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Affiliation(s)
- Zhongxing Liang
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Peijian He
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Yiran Han
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - C. Chris Yun
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia,Gastroenterology Research, Atlanta Veterans Administration Medical Center, Decatur, Georgia,Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia,Correspondence Address correspondence to: Chris Yun, PhD, Division of Digestive Diseases, Emory University School of Medicine, Atlanta, GA 30324. fax: (404) 727-5767.
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11
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Sabree SA, Voigt AP, Blackwell SE, Vishwakarma A, Chimenti MS, Salem AK, Weiner GJ. Direct and indirect immune effects of CMP-001, a virus-like particle containing a TLR9 agonist. J Immunother Cancer 2021; 9:jitc-2021-002484. [PMID: 34083419 PMCID: PMC8183212 DOI: 10.1136/jitc-2021-002484] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2021] [Indexed: 02/06/2023] Open
Abstract
Background CMP-001, also known as vidutolimod, is a virus-like particle containing a TLR9 agonist that is showing promise in early clinical trials. Our group previously demonstrated that the immunostimulatory effects of CMP-001 are dependent on an anti-Qβ antibody response which results in opsonization of CMP-001 and uptake by plasmacytoid dendritic cells (pDCs) that then produce interferon (IFN)-α. IFN-α then leads to an antitumor T-cell response that is responsible for the in vivo efficacy of CMP-001. Here, we explore mechanisms by which the initial effects of CMP-001 on pDCs activate other cells that can contribute to development of an antitumor T-cell response. Methods Uptake of CMP-001 by various peripheral blood mononuclear cell (PBMC) populations and response to anti-Qβ-coated CMP-001 were evaluated by flow cytometry and single-cell RNA sequencing. Purified monocytes were treated with anti-Qβ-coated CMP-001 or recombinant IFN-α to evaluate direct and secondary effects of anti-Qβ-coated CMP-001 on monocytes. Results Monocytes had the highest per cell uptake of anti-Qβ-coated CMP-001 with lower levels of uptake by pDCs and other cell types. Treatment of PBMCs with anti-Qβ-coated CMP-001 induced upregulation of IFN-responsive genes including CXCL10, PDL1, and indoleamine-2,3-dioxygenase (IDO) expression by monocytes. Most of the impact of anti-Qβ-coated CMP-001 on monocytes was indirect and mediated by IFN-α, but uptake of anti-Qβ-coated CMP-001 altered the monocytic response to IFN-α and resulted in enhanced expression of PDL1, IDO, and CD80 and suppressed expression of CXCL10. These changes included an enhanced ability to induce autologous CD4 T-cell proliferation. Conclusions Anti-Qβ-coated CMP-001 induces IFN-α production by pDCs which has secondary effects on a variety of cells including monocytes. Uptake of anti-Qβ-coated CMP-001 by monocytes alters their response to IFN-α, resulting in enhanced expression of PDL1, IDO and CD80 and suppressed expression of CXCL10. Despite aspects of an immunosuppressive phenotype, these monocytes demonstrated increased ability to augment autologous CD4 T-cell proliferation. These findings shed light on the complexity of the mechanism of action of anti-Qβ-coated CMP-001 and provide insight into pathways that may be targeted to further enhance the efficacy of this novel approach to immunotherapy.
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Affiliation(s)
- Shakoora A Sabree
- Interdisciplinary Graduate Program in Immunology, The University of Iowa, Iowa City, IA, USA.,Medical Scientist Training Program, The University of Iowa Carver College of Medicine, Iowa City, IA, USA.,Holden Comprehensive Cancer Center, The University of Iowa, Iowa City, IA, USA
| | - Andrew P Voigt
- Medical Scientist Training Program, The University of Iowa Carver College of Medicine, Iowa City, IA, USA.,Department of Ophthalmology and Visual Sciences, The University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Sue E Blackwell
- Holden Comprehensive Cancer Center, The University of Iowa, Iowa City, IA, USA
| | - Ajaykumar Vishwakarma
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA, USA.,Division of Pharmaceutics and Translational Therapeutics, The University of Iowa College of Pharmacy, Iowa City, IA, USA
| | - Michael S Chimenti
- Iowa Institute of Human Genetics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Aliasger K Salem
- Holden Comprehensive Cancer Center, The University of Iowa, Iowa City, IA, USA.,Division of Pharmaceutics and Translational Therapeutics, The University of Iowa College of Pharmacy, Iowa City, IA, USA
| | - George J Weiner
- Holden Comprehensive Cancer Center, The University of Iowa, Iowa City, IA, USA .,Division of Pharmaceutics and Translational Therapeutics, The University of Iowa College of Pharmacy, Iowa City, IA, USA.,Department of Internal Medicine, The University of Iowa Hospitals and Clinics, Iowa City, IA, USA
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12
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Callahan V, Hawks S, Crawford MA, Lehman CW, Morrison HA, Ivester HM, Akhrymuk I, Boghdeh N, Flor R, Finkielstein CV, Allen IC, Weger-Lucarelli J, Duggal N, Hughes MA, Kehn-Hall K. The Pro-Inflammatory Chemokines CXCL9, CXCL10 and CXCL11 Are Upregulated Following SARS-CoV-2 Infection in an AKT-Dependent Manner. Viruses 2021; 13:1062. [PMID: 34205098 PMCID: PMC8226769 DOI: 10.3390/v13061062] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 12/22/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly transmissible RNA virus that is the causative agent of the Coronavirus disease 2019 (COVID-19) pandemic. Patients with severe COVID-19 may develop acute lung injury (ALI) or acute respiratory distress syndrome (ARDS) and require mechanical ventilation. Key features of SARS-CoV-2 induced pulmonary complications include an overexpression of pro-inflammatory chemokines and cytokines that contribute to a 'cytokine storm.' In the current study an inflammatory state in Calu-3 human lung epithelial cells was characterized in which significantly elevated transcripts of the immunostimulatory chemokines CXCL9, CXCL10, and CXCL11 were present. Additionally, an increase in gene expression of the cytokines IL-6, TNFα, and IFN-γ was observed. The transcription of CXCL9, CXCL10, IL-6, and IFN-γ was also induced in the lungs of human transgenic angiotensin converting enzyme 2 (ACE2) mice infected with SARS-CoV-2. To elucidate cell signaling pathways responsible for chemokine upregulation in SARS-CoV-2 infected cells, small molecule inhibitors targeting key signaling kinases were used. The induction of CXCL9, CXCL10, and CXCL11 gene expression in response to SARS-CoV-2 infection was markedly reduced by treatment with the AKT inhibitor GSK690693. Samples from COVID-19 positive individuals also displayed marked increases in CXCL9, CXCL10, and CXCL11 transcripts as well as transcripts in the AKT pathway. The current study elucidates potential pathway specific targets for reducing the induction of chemokines that may be contributing to SARS-CoV-2 pathogenesis via hyperinflammation.
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Affiliation(s)
- Victoria Callahan
- National Center for Biodefense and Infectious Diseases, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (V.C.); (N.B.); (R.F.)
| | - Seth Hawks
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
| | - Matthew A. Crawford
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, VA 22908, USA; (M.A.C.); (M.A.H.)
| | - Caitlin W. Lehman
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
| | - Holly A. Morrison
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
| | - Hannah M. Ivester
- Graduate Program in Translational Biology, Medicine and Health, Virginia Polytechnic Institute and State University, Roanoke, VA 24061, USA;
| | - Ivan Akhrymuk
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
| | - Niloufar Boghdeh
- National Center for Biodefense and Infectious Diseases, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (V.C.); (N.B.); (R.F.)
| | - Rafaela Flor
- National Center for Biodefense and Infectious Diseases, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (V.C.); (N.B.); (R.F.)
| | - Carla V. Finkielstein
- Integrated Cellular Responses Laboratory, Department of Biological Sciences and Center for Drug Discovery, Fralin Biomedical Research Institute, Virginia Polytechnic Institute and State University, Roanoke, VA 24016, USA;
| | - Irving Coy Allen
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
- Virginia Tech Carilion School of Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24016, USA
- Center for Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
| | - James Weger-Lucarelli
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
- Center for Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
| | - Nisha Duggal
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
- Center for Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
| | - Molly A. Hughes
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, VA 22908, USA; (M.A.C.); (M.A.H.)
| | - Kylene Kehn-Hall
- National Center for Biodefense and Infectious Diseases, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (V.C.); (N.B.); (R.F.)
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA; (S.H.); (C.W.L.); (H.A.M.); (I.A.); (I.C.A.); (J.W.-L.); (N.D.)
- Center for Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
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13
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Henrich IC, Jain K, Young R, Quick L, Lindsay JM, Park DH, Oliveira AM, Blobel GA, Chou MM. Ubiquitin-Specific Protease 6 Functions as a Tumor Suppressor in Ewing Sarcoma through Immune Activation. Cancer Res 2021; 81:2171-2183. [PMID: 33558334 PMCID: PMC8137534 DOI: 10.1158/0008-5472.can-20-1458] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 11/21/2020] [Accepted: 02/03/2021] [Indexed: 11/16/2022]
Abstract
Ewing sarcoma is the second most common pediatric bone cancer, with a 5-year survival rate for metastatic disease of only 20%. Recent work indicates that survival is strongly correlated with high levels of tumor-infiltrating lymphocytes (TIL), whose abundance is associated with IFN-inducible chemokines CXCL10 and CCL5. However, the tumor-intrinsic factors that drive chemokine production and TIL recruitment have not been fully elucidated. We previously showed that ubiquitin-specific protease 6 (USP6) directly deubiquitinates and stabilizes Jak1, thereby inducing an IFN signature in Ewing sarcoma cells. Here, we show that this gene set comprises chemokines associated with immunostimulatory, antitumorigenic functions, including CXCL10 and CCL5. USP6 synergistically enhanced chemokine production in response to exogenous IFN by inducing surface upregulation of IFNAR1 and IFNGR1. USP6-expressing Ewing sarcoma cells stimulated migration of primary human monocytes and T lymphocytes and triggered activation of natural killer (NK) cells in vitro. USP6 inhibited Ewing sarcoma xenograft growth in nude but not NSG mice and was accompanied by increased intratumoral chemokine production and infiltration and activation of NK cells, dendritic cells, and macrophages, consistent with a requirement for innate immune cells in mediating the antitumorigenic effects of USP6. High USP6 expression in patients with Ewing sarcoma was associated with chemokine production, immune infiltration, and improved survival. This work reveals a previously unrecognized tumor-suppressive function for USP6, which engenders an immunostimulatory microenvironment through pleiotropic effects on multiple immune lineages. This further raises the possibility that USP6 activity may be harnessed to create a "hot" tumor microenvironment in immunotherapy. SIGNIFICANCE: This study reveals a novel tumor-suppressive function for USP6 by inducing an immunostimulatory microenvironment, suggesting that USP6 activity may be exploited to enhance immunotherapy regimens.
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Affiliation(s)
- Ian C Henrich
- Department Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Kanika Jain
- Department Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Perelman School of Medicine at University of Pennsylvania, Philadelphia, Pennsylvania
| | - Robert Young
- Department Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Laura Quick
- Department Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jarrett M Lindsay
- Perelman School of Medicine at University of Pennsylvania, Philadelphia, Pennsylvania
| | - Daniel H Park
- Perelman School of Medicine at University of Pennsylvania, Philadelphia, Pennsylvania
| | - Andre M Oliveira
- Department Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Gerd A Blobel
- Perelman School of Medicine at University of Pennsylvania, Philadelphia, Pennsylvania
- Department Pediatric Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Margaret M Chou
- Department Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
- Perelman School of Medicine at University of Pennsylvania, Philadelphia, Pennsylvania
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14
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Collier JJ, Batdorf HM, Martin TM, Rohli KE, Burk DH, Lu D, Cooley CR, Karlstad MD, Jackson JW, Sparer TE, Zhang J, Mynatt RL, Burke SJ. Pancreatic, but not myeloid-cell, expression of interleukin-1alpha is required for maintenance of insulin secretion and whole body glucose homeostasis. Mol Metab 2021; 44:101140. [PMID: 33285301 PMCID: PMC7772372 DOI: 10.1016/j.molmet.2020.101140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 11/03/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE The expression of the interleukin-1 receptor type I (IL-1R) is enriched in pancreatic islet β-cells, signifying that ligands activating this pathway are important for the health and function of the insulin-secreting cell. Using isolated mouse, rat, and human islets, we identified the cytokine IL-1α as a highly inducible gene in response to IL-1R activation. In addition, IL-1α is elevated in mouse and rat models of obesity and Type 2 diabetes. Since less is known about the biology of IL-1α relative to IL-1β in pancreatic tissue, our objective was to investigate the contribution of IL-1α to pancreatic β-cell function and overall glucose homeostasis in vivo. METHODS We generated a novel mouse line with conditional IL-1α alleles and subsequently produced mice with either pancreatic- or myeloid lineage-specific deletion of IL-1α. RESULTS Using this in vivo approach, we discovered that pancreatic (IL-1αPdx1-/-), but not myeloid-cell, expression of IL-1α (IL-1αLysM-/-) was required for the maintenance of whole body glucose homeostasis in both male and female mice. Moreover, pancreatic deletion of IL-1α led to impaired glucose tolerance with no change in insulin sensitivity. This observation was consistent with our finding that glucose-stimulated insulin secretion was reduced in islets isolated from IL-1αPdx1-/- mice. Alternatively, IL-1αLysM-/- mice (male and female) did not have any detectable changes in glucose tolerance, respiratory quotient, physical activity, or food intake when compared with littermate controls. CONCLUSIONS Taken together, we conclude that there is an important physiological role for pancreatic IL-1α to promote glucose homeostasis by supporting glucose-stimulated insulin secretion and islet β-cell mass in vivo.
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Affiliation(s)
- J Jason Collier
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA; Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Heidi M Batdorf
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA
| | - Thomas M Martin
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA; Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Kristen E Rohli
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA
| | - David H Burk
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA
| | - Danhong Lu
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, 27704, USA
| | - Chris R Cooley
- Department of Surgery, University of Tennessee Health Science Center, Knoxville, TN, 37920, USA
| | - Michael D Karlstad
- Department of Surgery, University of Tennessee Health Science Center, Knoxville, TN, 37920, USA
| | - Joseph W Jackson
- Department of Microbiology, University of Tennessee, Knoxville, TN, 37996, USA
| | - Tim E Sparer
- Department of Microbiology, University of Tennessee, Knoxville, TN, 37996, USA
| | - Jingying Zhang
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA
| | - Randall L Mynatt
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA
| | - Susan J Burke
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, 70808, USA.
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15
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Luo N, Yang C, Zhu Y, Chen Q, Zhang B. Diosmetin Ameliorates Nonalcoholic Steatohepatitis through Modulating Lipogenesis and Inflammatory Response in a STAT1/CXCL10-Dependent Manner. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:655-667. [PMID: 33404223 DOI: 10.1021/acs.jafc.0c06652] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is an inflammatory lipotoxic disorder characterized by lipid accumulation and inflammation. Diosmetin (Dios), a flavonoid, has an active effect against nonalcoholic fatty liver disease, whereas its effect on NASH remains elusive. To investigate the effects of Dios on lipogenesis and inflammatory response and explore the molecular mechanisms of Dios on NASH, mice induced by high-fat diet (HFD), HepG2 cells stimulated by palmitic acid (PA), transcriptome sequencing, and molecular biological experiments were used. We show, by pathological analysis (HE, Oli Red O, and Masson staining) and biochemical parameters (TC, TG, LDL-C, ALT, and AST), Dios alleviated liver lipid accumulation and inflammatory injury. According to liver RNA-Seq analysis, CXCL10 and STAT1 were assumed to be the key target genes of Dios on NASH. Significantly, Dios regulated STAT1/CXCL10 signal pathway and further attenuated NASH via regulating the expression of LXRα/β, SREBP-1c, CHREBP, and NF-κB. In conclusion, Dios is proposed to alleviate NASH through suppression of lipogenesis and inflammatory response via a STAT1/CXCL10-dependent pathway.
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Affiliation(s)
- Nanxuan Luo
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, P. R. China
| | - Changqing Yang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, P. R. China
| | - Yurong Zhu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, P. R. China
| | - Qianfeng Chen
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, P. R. China
| | - Baoshun Zhang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, P. R. China
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16
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Liu S, Liao Y, Chen B, Chen Y, Yu Z, Wei H, Zhang L, Huang S, Rothman PB, Gao GF, Chen JL. Critical role of Syk-dependent STAT1 activation in innate antiviral immunity. Cell Rep 2021; 34:108627. [PMID: 33472080 DOI: 10.1016/j.celrep.2020.108627] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 10/29/2020] [Accepted: 12/18/2020] [Indexed: 12/13/2022] Open
Abstract
The JAK/STAT1 pathway is generally activated by cytokines, providing essential antiviral defense. Here, we identify that STAT1 activation is independent of cytokines and JAKs at the early infection stage of some viruses, including influenza A virus (IAV). Instead, STAT1 is activated mainly through spleen tyrosine kinase (Syk) downstream of retinoic acid-inducible gene-I/mitochondrial antiviral-signaling protein (RIG-I/MAVS) signaling. Syk deletion profoundly impairs immediate innate immunity, as evidenced by the finding that Syk deletion attenuates tyrosine phosphorylation of STAT1 and reduces the expressions of interferon-stimulated genes (ISGs) in vitro and in vivo. The antiviral response to IAV infection is also significantly suppressed in the STAT1Y701F knockin mice. The results demonstrate that STAT1 activation is dependent on Syk rather than the cytokine-activated JAK signaling at the early stage of viral infection, which is critical for initial antiviral immunity. Our finding provides insights into the complicated mechanisms underlying host immune responses to viral infection.
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Affiliation(s)
- Shasha Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuan Liao
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Biao Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuhai Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Ziding Yu
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Haitao Wei
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Lianfeng Zhang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Comparative Medical Center, Peking Union Medical College, Beijing 100021, China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, USA
| | - Paul B Rothman
- Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - George Fu Gao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Ji-Long Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China; Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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17
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Dangaj D, Bruand M, Grimm AJ, Ronet C, Barras D, Duttagupta PA, Lanitis E, Duraiswamy J, Tanyi JL, Benencia F, Conejo-Garcia J, Ramay HR, Montone KT, Powell DJ, Gimotty PA, Facciabene A, Jackson DG, Weber JS, Rodig SJ, Hodi SF, Kandalaft LE, Irving M, Zhang L, Foukas P, Rusakiewicz S, Delorenzi M, Coukos G. Cooperation between Constitutive and Inducible Chemokines Enables T Cell Engraftment and Immune Attack in Solid Tumors. Cancer Cell 2019; 35:885-900.e10. [PMID: 31185212 PMCID: PMC6961655 DOI: 10.1016/j.ccell.2019.05.004] [Citation(s) in RCA: 469] [Impact Index Per Article: 93.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 03/05/2019] [Accepted: 05/13/2019] [Indexed: 01/05/2023]
Abstract
We investigated the role of chemokines in regulating T cell accumulation in solid tumors. CCL5 and CXCL9 overexpression was associated with CD8+ T cell infiltration in solid tumors. T cell infiltration required tumor cell-derived CCL5 and was amplified by IFN-γ-inducible, myeloid cell-secreted CXCL9. CCL5 and CXCL9 coexpression revealed immunoreactive tumors with prolonged survival and response to checkpoint blockade. Loss of CCL5 expression in human tumors was associated with epigenetic silencing through DNA methylation. Reduction of CCL5 expression caused tumor-infiltrating lymphocyte (TIL) desertification, whereas forced CCL5 expression prevented Cxcl9 expression and TILs loss, and attenuated tumor growth in mice through IFN-γ. The cooperation between tumor-derived CCL5 and IFN-γ-inducible CXCR3 ligands secreted by myeloid cells is key for orchestrating T cell infiltration in immunoreactive and immunoresponsive tumors.
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MESH Headings
- Animals
- Antineoplastic Agents, Immunological/pharmacology
- CD8-Positive T-Lymphocytes/drug effects
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cell Line, Tumor
- Chemokine CCL5/genetics
- Chemokine CCL5/immunology
- Chemokine CCL5/metabolism
- Chemokine CXCL9/genetics
- Chemokine CXCL9/immunology
- Chemokine CXCL9/metabolism
- Chemotaxis, Leukocyte/drug effects
- Coculture Techniques
- Cytokines/genetics
- Cytokines/immunology
- Cytokines/metabolism
- DNA Methylation
- Dendritic Cells/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Epigenesis, Genetic
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunotherapy/methods
- Interferon-gamma/genetics
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Lymphocyte Activation/drug effects
- Lymphocytes, Tumor-Infiltrating/drug effects
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Macrophages/drug effects
- Macrophages/immunology
- Macrophages/metabolism
- Mice, Inbred C57BL
- Ovarian Neoplasms/immunology
- Ovarian Neoplasms/metabolism
- Ovarian Neoplasms/pathology
- Ovarian Neoplasms/therapy
- Paracrine Communication
- Receptors, CXCR3/genetics
- Receptors, CXCR3/immunology
- Receptors, CXCR3/metabolism
- Signal Transduction
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Affiliation(s)
- Denarda Dangaj
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Marine Bruand
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Alizée J Grimm
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Catherine Ronet
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - David Barras
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland; SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland
| | - Priyanka A Duttagupta
- Ovarian Cancer Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; University of Chicago, Knapp Center for Biomedical Discovery, Department of Hematology & Oncology, Chicago, IL 60637, USA
| | - Evripidis Lanitis
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Jaikumar Duraiswamy
- Ovarian Cancer Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Division of Cell and Gene Therapy, OTAT/CBER/FDA, Silver Spring, MD 20993, USA
| | - Janos L Tanyi
- Ovarian Cancer Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Fabian Benencia
- Russ College of Engineering and Technology, Ohio University, Athens, OH 45701, USA
| | - Jose Conejo-Garcia
- Department of Immunology and Gynecologic Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Hena R Ramay
- SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland; International Microbiome Centre, University of Calgary, Calgary, AB, Canada
| | - Kathleen T Montone
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Daniel J Powell
- Ovarian Cancer Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Phyllis A Gimotty
- Department of Biostatistics and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Andrea Facciabene
- Ovarian Cancer Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | | | - Jeffrey S Weber
- Laura and Isaac Perlmutter Cancer Center, New York University, 522 First Avenue, Room 1310 Smilow Building, New York, NY 10016, USA
| | - Scott J Rodig
- Department of Pathology, Brigham & Women's Hospital, Boston, MA 02215, USA; Center for Immuno-Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Stephen F Hodi
- Center for Immuno-Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Lana E Kandalaft
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Melita Irving
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Lin Zhang
- Ovarian Cancer Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Periklis Foukas
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland; 2nd Department of Pathology, Attikon University Hospital, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Sylvie Rusakiewicz
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland
| | - Mauro Delorenzi
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland; SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland
| | - George Coukos
- Ludwig Institute for Cancer Research and Department of Oncology, University of Lausanne, Lausanne 1066, Switzerland.
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18
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Deng R, Zhang P, Liu W, Zeng X, Ma X, Shi L, Wang T, Yin Y, Chang W, Zhang P, Wang G, Tao K. HDAC is indispensable for IFN-γ-induced B7-H1 expression in gastric cancer. Clin Epigenetics 2018; 10:153. [PMID: 30537988 PMCID: PMC6288935 DOI: 10.1186/s13148-018-0589-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/21/2018] [Indexed: 12/13/2022] Open
Abstract
Background B7 homolog 1 (B7-H1) overexpression on tumor cells is an important mechanism of immune evasion in gastric cancer (GC). Elucidation of the regulation of B7-H1 expression is urgently required to guide B7-H1-targeted cancer therapy. Interferon gamma (IFN-γ) is thought to be the main driving force behind B7-H1 expression, and epigenetic factors including histone acetylation are recently linked to the process. Here, we investigated the potential role of histone deacetylase (HDAC) in IFN-γ-induced B7-H1 expression in GC. The effect of Vorinostat (SAHA), a small molecular inhibitor of HDAC, on tumor growth and B7-H1 expression in a mouse GC model was also evaluated. Results RNA-seq data from The Cancer Genome Atlas revealed that expression of B7-H1, HDAC1–3, 6–8, and 10 and SIRT1, 3, 5, and 6 was higher, and expression of HDAC5 and SIRT4 was lower in GC compared to that in normal gastric tissues; that HDAC3 and HDAC1 expression level significantly correlated with B7-H1 in GC with a respective r value of 0.42 (p < 0.001) and 0.21 (p < 0.001). HDAC inhibitor (Trichostatin A, SAHA, and sodium butyrate) pretreatment suppressed IFN-γ-induced B7-H1 expression on HGC-27 cells. HDAC1 and HDAC3 gene knockdown had the same effect. SAHA pretreatment or HDAC knockdown resulted in impaired IFN-γ signaling, demonstrated by the reduction of JAK2, p-JAK1, p-JAK2, and p-STAT1 expression and inefficient STAT1 nuclear translocation. Furthermore, SAHA pretreatment compromised IFN-γ-induced upregulation of histone H3 lysine 9 acetylation level in B7-H1 gene promoter. In the grafted mouse GC model, SAHA treatment suppressed tumor growth, inhibited B7-H1 expression, and elevated the percentage of tumor-infiltrating CD8+ T cells. Conclusion HDAC is indispensable for IFN-γ-induced B7-H1 in GC. The study suggests the possibility of targeting B7-H1 using small molecular HDAC inhibitors for cancer treatment. Electronic supplementary material The online version of this article (10.1186/s13148-018-0589-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rui Deng
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Department of General Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Peng Zhang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Weizhen Liu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiangyu Zeng
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xianxiong Ma
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Liang Shi
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Tao Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuping Yin
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Weilong Chang
- Department of General Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Pei Zhang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Kaixiong Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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19
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Oh E, Ahn M, Afelik S, Becker TC, Roep BO, Thurmond DC. Syntaxin 4 Expression in Pancreatic β-Cells Promotes Islet Function and Protects Functional β-Cell Mass. Diabetes 2018; 67:2626-2639. [PMID: 30305365 PMCID: PMC6245223 DOI: 10.2337/db18-0259] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 09/25/2018] [Indexed: 02/06/2023]
Abstract
Syntaxin 4 (Stx4) enrichment in human and mouse islet grafts improves the success of transplants in reversing streptozotocin (STZ)-induced diabetes in mice, although the underlying molecular mechanisms remain elusive. Toward a further understanding of this, human islets and inducible transgenic mice that selectively overexpress Stx4 in islet β-cells (βTG-Stx4) were challenged with proinflammatory stressors in vitro and in vivo. Remarkably, βTG-Stx4 mice resisted the loss of β-cell mass and the glucose intolerance that multiple low doses of STZ induce. Under standard conditions, glucose tolerance was enhanced and mice maintained normal fasting glycemia and insulinemia. Conversely, Stx4 heterozygous knockout mice succumbed rapidly to STZ-induced glucose intolerance compared with their wild-type littermates. Human islet β-cells overexpressing Stx4 exhibited enhanced insulin secretory capability; resilience against proinflammatory cytokine-induced apoptosis; and reduced expression of the CXCL9, CXCL10, and CXCL11 genes coordinate with decreased activation/nuclear localization of nuclear factor-κB. Finding ways to boost Stx4 expression presents a novel potential therapeutic avenue for promoting islet function and preserving β-cell mass.
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Affiliation(s)
- Eunjin Oh
- Department of Molecular and Cellular Endocrinology, Diabetes and Metabolism Research Institute of City of Hope, Duarte, CA
| | - Miwon Ahn
- Department of Molecular and Cellular Endocrinology, Diabetes and Metabolism Research Institute of City of Hope, Duarte, CA
| | - Solomon Afelik
- Department of Surgery/Division of Transplantation, University of Illinois at Chicago, Chicago, IL
| | - Thomas C Becker
- Department of Internal Medicine, Duke Molecular Physiology Institute, Duke University, Durham, NC
| | - Bart O Roep
- Department of Diabetes Immunology, Diabetes and Metabolism Research Institute of City of Hope, Duarte, CA
| | - Debbie C Thurmond
- Department of Molecular and Cellular Endocrinology, Diabetes and Metabolism Research Institute of City of Hope, Duarte, CA
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20
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Burke SJ, Batdorf HM, Burk DH, Martin TM, Mendoza T, Stadler K, Alami W, Karlstad MD, Robson MJ, Blakely RD, Mynatt RL, Collier JJ. Pancreatic deletion of the interleukin-1 receptor disrupts whole body glucose homeostasis and promotes islet β-cell de-differentiation. Mol Metab 2018; 14:95-107. [PMID: 29914854 PMCID: PMC6034063 DOI: 10.1016/j.molmet.2018.06.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 05/30/2018] [Accepted: 06/02/2018] [Indexed: 02/06/2023] Open
Abstract
Objective Pancreatic tissue, and islets in particular, are enriched in expression of the interleukin-1 receptor type I (IL-1R). Because of this enrichment, islet β-cells are exquisitely sensitive to the IL-1R ligands IL-1α and IL-1β, suggesting that signaling through this pathway regulates health and function of islet β-cells. Methods Herein, we report a targeted deletion of IL-1R in pancreatic tissue (IL-1RPdx1−/−) in C57BL/6J mice and in db/db mice on the C57 genetic background. Islet morphology, β-cell transcription factor abundance, and expression of the de-differentiation marker Aldh1a3 were analyzed by immunofluorescent staining. Glucose and insulin tolerance tests were used to examine metabolic status of these genetic manipulations. Glucose-stimulated insulin secretion was evaluated in vivo and in isolated islets ex vivo by perifusion. Results Pancreatic deletion of IL-1R leads to impaired glucose tolerance, a phenotype that is exacerbated by age. Crossing the IL-1RPdx1−/− with db/db mice worsened glucose tolerance without altering body weight. There were no detectable alterations in insulin tolerance between IL-1RPdx1−/− mice and littermate controls. However, glucose-stimulated insulin secretion was reduced in islets isolated from IL-1RPdx1−/− relative to control islets. Insulin output in vivo after a glucose challenge was also markedly reduced in IL-1RPdx1−/− mice when compared with littermate controls. Pancreatic islets from IL-1RPdx1−/− mice displayed elevations in Aldh1a3, a marker of de-differentiation, and reduction in nuclear abundance of the β-cell transcription factor MafA. Nkx6.1 abundance was unaltered. Conclusions There is an important physiological role for pancreatic IL-1R to promote glucose homeostasis by suppressing expression of Aldh1a3, sustaining MafA abundance, and supporting glucose-stimulated insulin secretion in vivo. Pancreatic deletion of IL-1R impairs glucose tolerance in young and old male mice. Pancreatic deletion of IL-1R worsens glucose tolerance in obese db/db mice. Deletion of IL-1R triggers expression of the de-differentiation marker Aldh1a3. IL-1 signaling in pancreatic tissue influences islet health and function.
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Affiliation(s)
- Susan J Burke
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Heidi M Batdorf
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - David H Burk
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Thomas M Martin
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Tamra Mendoza
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | | | - Wateen Alami
- Department of Surgery, University of Tennessee Health Science Center, Knoxville, TN, 37920, USA
| | - Michael D Karlstad
- Department of Surgery, University of Tennessee Health Science Center, Knoxville, TN, 37920, USA
| | - Matthew J Robson
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, 45267, USA
| | - Randy D Blakely
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Jupiter FL, 33458, USA
| | - Randall L Mynatt
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - J Jason Collier
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA.
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21
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Kaffe E, Fiorotto R, Pellegrino F, Mariotti V, Amenduni M, Cadamuro M, Fabris L, Strazzabosco M, Spirli C. β-Catenin and interleukin-1β-dependent chemokine (C-X-C motif) ligand 10 production drives progression of disease in a mouse model of congenital hepatic fibrosis. Hepatology 2018; 67:1903-1919. [PMID: 29140564 PMCID: PMC5906178 DOI: 10.1002/hep.29652] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/25/2017] [Accepted: 11/12/2017] [Indexed: 12/20/2022]
Abstract
UNLABELLED Congenital hepatic fibrosis (CHF), a genetic disease caused by mutations in the polycystic kidney and hepatic disease 1 (PKHD1) gene, encoding for the protein fibrocystin/polyductin complex, is characterized by biliary dysgenesis, progressive portal fibrosis, and a protein kinase A-mediated activating phosphorylation of β-catenin at Ser675. Biliary structures of Pkhd1del4/del4 mice, a mouse model of CHF, secrete chemokine (C-X-C motif) ligand 10 (CXCL10), a chemokine able to recruit macrophages. The aim of this study was to clarify whether CXCL10 plays a pathogenetic role in disease progression in CHF/Caroli disease and to understand the mechanisms leading to increased CXCL10 secretion. We demonstrate that treatment of Pkhd1del4/del4 mice for 3 months with AMG-487, an inhibitor of CXC chemokine receptor family 3, the cognate receptor of CXCL10, reduces the peribiliary recruitment of alternative activated macrophages (cluster of differentiation 45+ F4/80+ cells), spleen size, liver fibrosis (sirius red), and cyst growth (cytokeratin 19-positive area), consistent with a pathogenetic role of CXCL10. Furthermore, we show that in fibrocystin/polyductin complex-defective cholangiocytes, isolated from Pkhd1del4/del4 mice, CXCL10 production is mediated by Janus kinase/signal transducer and activator of transcription 3 in response to interleukin 1beta (IL-1β) and β-catenin. Specifically, IL-1β promotes signal transducer and activator of transcription 3 phosphorylation, whereas β-catenin promotes its nuclear translocation. Increased pro-IL-1β was regulated by nuclear factor kappa-light-chain-enhancer of activated B cells, and increased secretion of active IL-1β was mediated by the activation of Nod-like receptors, pyrin domain containing 3 inflammasome (increased expression of caspase 1 and Nod-like receptors, pyrin domain containing 3). CONCLUSION In fibrocystin/polyductin complex-defective cholangiocytes, β-catenin and IL-1β are responsible for signal transducer and activator of transcription 3-dependent secretion of CXCL10; in vivo experiments show that the CXCL10/CXC chemokine receptor family 3 axis prevents the recruitment of macrophages, reduces inflammation, and halts the progression of the disease; the increased production of IL-1β highlights the autoinflammatory nature of CHF and may open novel therapeutic avenues. (Hepatology 2018;67:1903-1919).
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Affiliation(s)
- Eleanna Kaffe
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA
| | - Romina Fiorotto
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA,International Center for Digestive Health, University of Milan-Bicocca, Milan, Italy
| | - Francesca Pellegrino
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA
| | - Valeria Mariotti
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA,International Center for Digestive Health, University of Milan-Bicocca, Milan, Italy,Department of Molecular Medicine, University of Padua, School of Medicine, Padua, Italy
| | - Mariangela Amenduni
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA
| | - Massimiliano Cadamuro
- International Center for Digestive Health, University of Milan-Bicocca, Milan, Italy
| | - Luca Fabris
- International Center for Digestive Health, University of Milan-Bicocca, Milan, Italy,Department of Molecular Medicine, University of Padua, School of Medicine, Padua, Italy
| | - Mario Strazzabosco
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA,International Center for Digestive Health, University of Milan-Bicocca, Milan, Italy
| | - Carlo Spirli
- Section of Digestive Diseases, Liver Center, Yale University, New Haven, CT, USA,International Center for Digestive Health, University of Milan-Bicocca, Milan, Italy
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22
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Kuwata H, Yuzurihara C, Kinoshita N, Taki Y, Ikegami Y, Washio S, Hirakawa Y, Yoda E, Aiuchi T, Itabe H, Nakatani Y, Hara S. The group VIA calcium‐independent phospholipase A
2
and NFATc4 pathway mediates IL‐1β‐induced expression of chemokines CCL2 and CXCL10 in rat fibroblasts. FEBS J 2018; 285:2056-2070. [DOI: 10.1111/febs.14462] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/15/2018] [Accepted: 04/03/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Hiroshi Kuwata
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Chihiro Yuzurihara
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Natsumi Kinoshita
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Yuki Taki
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Yuki Ikegami
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Sana Washio
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Yushi Hirakawa
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Emiko Yoda
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Toshihiro Aiuchi
- Division of Biological Chemistry Department of Molecular Biology School of Pharmacy Showa University Tokyo Japan
| | - Hiroyuki Itabe
- Division of Biological Chemistry Department of Molecular Biology School of Pharmacy Showa University Tokyo Japan
| | - Yoshihito Nakatani
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
| | - Shuntaro Hara
- Division of Health Chemistry Department of Healthcare and Regulatory Sciences School of Pharmacy Showa University Tokyo Japan
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23
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Furman BD, Kent CL, Huebner JL, Kraus VB, McNulty AL, Guilak F, Olson SA. CXCL10 is upregulated in synovium and cartilage following articular fracture. J Orthop Res 2018; 36:1220-1227. [PMID: 28906016 PMCID: PMC5851826 DOI: 10.1002/jor.23735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 09/06/2017] [Indexed: 02/04/2023]
Abstract
The objective of this study was to investigate the expression of the chemokine CXCL10 and its role in joint tissues following articular fracture. We hypothesized that CXCL10 is upregulated following articular fracture and contributes to cartilage degradation associated with post-traumatic arthritis (PTA). To evaluate CXCL10 expression following articular fracture, gene expression was quantified in synovial tissue from knee joints of C57BL/6 mice that develop PTA following articular fracture, and MRL/MpJ mice that are protected from PTA. CXCL10 protein expression was assessed in human cartilage in normal, osteoarthritic (OA), and post-traumatic tissue using immunohistochemistry. The effects of exogenous CXCL10, alone and in combination with IL-1, on porcine cartilage explants were assessed by quantifying the release of catabolic mediators. Synovial tissue gene expression of CXCL10 was upregulated by joint trauma, peaking one day in C57BL/6 mice (25-fold) versus 3 days post-fracture in MRL/MpJ mice (15-fold). CXCL10 protein in articular cartilage was most highly expressed following trauma compared with normal and OA tissue. In a dose dependent manner, exogenous CXCL10 significantly reduced total matrix metalloproteinase (MMP) and aggrecanase activity of culture media from cartilage explants. CXCL10 also trended toward a reduction in IL-1α-stimulated total MMP activity (p = 0.09) and S-GAG (p = 0.09), but not NO release. In conclusion, CXCL10 was upregulated in synovium and chondrocytes following trauma. However, exogenous CXCL10 did not induce a catabolic response in cartilage. CXCL10 may play a role in modulating the chondrocyte response to inflammatory stimuli associated with joint injury and the progression of PTA. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1220-1227, 2018.
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Affiliation(s)
- Bridgette D. Furman
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
| | - Collin L. Kent
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
| | | | | | - Amy L. McNulty
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
| | - Farshid Guilak
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO 63110,Shriners’ Hospital for Children-St. Louis, St. Louis, MO 63110
| | - Steven A. Olson
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
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24
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Bradburn S, McPhee J, Bagley L, Carroll M, Slevin M, Al-Shanti N, Barnouin Y, Hogrel JY, Pääsuke M, Gapeyeva H, Maier A, Sipilä S, Narici M, Robinson A, Mann D, Payton A, Pendleton N, Butler-Browne G, Murgatroyd C. Dysregulation of C-X-C motif ligand 10 during aging and association with cognitive performance. Neurobiol Aging 2017; 63:54-64. [PMID: 29223680 PMCID: PMC5805841 DOI: 10.1016/j.neurobiolaging.2017.11.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 10/04/2017] [Accepted: 11/17/2017] [Indexed: 01/20/2023]
Abstract
Chronic low-grade inflammation during aging (inflammaging) is associated with cognitive decline and neurodegeneration; however, the mechanisms underlying inflammaging are unclear. We studied a population (n = 361) of healthy young and old adults from the MyoAge cohort. Peripheral levels of C-X-C motif chemokine ligand 10 (CXCL10) was found to be higher in older adults, compared with young, and negatively associated with working memory performance. This coincided with an age-related reduction in blood DNA methylation at specific CpGs within the CXCL10 gene promoter. In vitro analysis supported the role of DNA methylation in regulating CXCL10 transcription. A polymorphism (rs56061981) that altered methylation at one of these CpG sites further associated with working memory performance in 2 independent aging cohorts. Studying prefrontal cortex samples, we found higher CXCL10 protein levels in those with Alzheimer's disease, compared with aged controls. These findings support the association of peripheral inflammation, as demonstrated by CXCL10, in aging and cognitive decline. We reveal age-related epigenetic and genetic factors which contribute to the dysregulation of CXCL10.
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Affiliation(s)
- Steven Bradburn
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Jamie McPhee
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Liam Bagley
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Michael Carroll
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Mark Slevin
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Nasser Al-Shanti
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Yoann Barnouin
- Institut de Myologie, UPMC UM 76, INSERM U 974, CNRS UMR, Paris, France
| | - Jean-Yves Hogrel
- Institut de Myologie, UPMC UM 76, INSERM U 974, CNRS UMR, Paris, France
| | - Mati Pääsuke
- Institute of Sport Sciences and Physiotherapy, Faculty of Medicine, University of Tartu, Tartu, Estonia
| | - Helena Gapeyeva
- Institute of Sport Sciences and Physiotherapy, Faculty of Medicine, University of Tartu, Tartu, Estonia
| | - Andrea Maier
- Department of Human Movement Sciences, MOVE Research Institute, VU University Medical Center, Amsterdam, the Netherlands; Department of Medicine and Aged Care, Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia
| | - Sarianna Sipilä
- Gerontology Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Marco Narici
- Faculty of Medicine and Health Sciences, University of Nottingham, Derby, UK
| | - Andrew Robinson
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, The University of Manchester, Manchester, UK
| | - David Mann
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, The University of Manchester, Manchester, UK
| | - Antony Payton
- Centre for Epidemiology, Division of Population Health, Health Services Research & Primary Care, School of Health Sciences, The University of Manchester, Manchester, UK
| | - Neil Pendleton
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, The University of Manchester, Manchester, UK
| | | | - Chris Murgatroyd
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK.
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Cell-penetrating interactomic inhibition of nuclear factor-kappa B in a mouse model of postoperative cognitive dysfunction. Sci Rep 2017; 7:13482. [PMID: 29044209 PMCID: PMC5647420 DOI: 10.1038/s41598-017-14027-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 10/05/2017] [Indexed: 12/18/2022] Open
Abstract
Some patients experience impaired cognitive functioning after surgery, a phenomenon referred to as postoperative cognitive dysfunction (POCD). Signs of POCD are closely associated with the development of systemic or hippocampal inflammation. However, the precise pathophysiological mechanisms of prevention/treatment options for POCD still remain unclear. After injury, the transcriptional factor nuclear factor-kappa B (NF-κB) is thought to regulate or stimulate inflammation amplification. Therefore, we designed a cell-penetrating fusion protein called nt-p65-TMD, which inhibits NF-κB p65 activation by translocating into the nucleus. In the present study, we discovered that nt-p65-TMD exerted effects on surgery-induced cognitive impairment in mice. Specifically, nt-p65-TMD exhibited strong immunoregulatory properties that were able to reduce surgery-induced elevations in cerebrovascular integrity impairment, subsequent peripheral immune-cell recruitment, and inflammation amplification, which ultimately lead to cognitive decline. The nt-p65-TMD has the unique ability to regulate and reduce systemic inflammation and inflammation amplification, suggesting a new strategy for preventing development of cognitive decline that occurs in POCD.
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26
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Buccione C, Fragale A, Polverino F, Ziccheddu G, Aricò E, Belardelli F, Proietti E, Battistini A, Moschella F. Role of interferon regulatory factor 1 in governing
T
reg depletion,
T
h1 polarization, inflammasome activation and antitumor efficacy of cyclophosphamide. Int J Cancer 2017; 142:976-987. [DOI: 10.1002/ijc.31083] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 09/08/2017] [Accepted: 09/25/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Carla Buccione
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Alessandra Fragale
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Federica Polverino
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Giovanna Ziccheddu
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Eleonora Aricò
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Filippo Belardelli
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Enrico Proietti
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
| | - Angela Battistini
- Department of Infectious DiseasesIstituto Superiore di SanitàRome Italy
| | - Federica Moschella
- Department of Oncology and Molecular MedicineIstituto Superiore di SanitàRome Italy
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27
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Tomita K, Kabashima A, Freeman BL, Bronk SF, Hirsova P, Ibrahim SH. Mixed Lineage Kinase 3 Mediates the Induction of CXCL10 by a STAT1-Dependent Mechanism During Hepatocyte Lipotoxicity. J Cell Biochem 2017; 118:3249-3259. [PMID: 28262979 PMCID: PMC5550329 DOI: 10.1002/jcb.25973] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 01/10/2023]
Abstract
Saturated fatty acids (SFA) and their toxic metabolites contribute to hepatocyte lipotoxicity in nonalcoholic steatohepatitis (NASH). We previously reported that hepatocytes, under lipotoxic stress, express the potent macrophage chemotactic ligand C-X-C motif chemokine 10 (CXCL10), and release CXCL10-enriched extracellular vesicles (EV) by a mixed lineage kinase (MLK) 3-dependent mechanism. In the current study, we sought to examine the signaling pathway responsible for CXCL10 induction during hepatocyte lipotoxicity. Here, we demonstrate a role for signal transducer and activator of transcription (STAT) 1 in regulating CXCL10 expression. Huh7 and HepG2 cells were treated with lysophosphatidylcholine (LPC), the toxic metabolite of the SFA palmitate. In LPC-treated hepatocytes, CXCL10 induction is mediated by a mitogen activated protein kinase (MAPK) signaling cascade consisting of a relay kinase module of MLK3, MKK3/6, and p38. P38 in turn induces STAT1 Ser727 phosphorylation and CXCL10 upregulation in hepatocytes, which is reduced by genetic or pharmacological inhibition of this MAPK signaling cascade. The binding and activity of STAT1 at the CXCL10 gene promoter were identified by chromatin immunoprecipitation and luciferase gene expression assays. Promoter activation was attenuated by MLK3/STAT1 inhibition or by deletion of the consensus STAT1 binding sites within the CXCL10 promoter. In lipotoxic hepatocytes, MLK3 activates a MAPK signaling cascade, resulting in the activating phosphorylation of STAT1, and CXCL10 transcriptional upregulation. Hence, this kinase relay module and/or STAT1 inhibition may serve as a therapeutic target to reduce CXCL10 release, thereby attenuating NASH pathogenesis. J. Cell. Biochem. 118: 3249-3259, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Kyoko Tomita
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Ayano Kabashima
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Brittany L. Freeman
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Steven F. Bronk
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Petra Hirsova
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Samar H. Ibrahim
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
- Division of Pediatric Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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28
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Collier JJ, Sparer TE, Karlstad MD, Burke SJ. Pancreatic islet inflammation: an emerging role for chemokines. J Mol Endocrinol 2017; 59:R33-R46. [PMID: 28420714 PMCID: PMC5505180 DOI: 10.1530/jme-17-0042] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 04/18/2017] [Indexed: 12/13/2022]
Abstract
Both type 1 and type 2 diabetes exhibit features of inflammation associated with alterations in pancreatic islet function and mass. These immunological disruptions, if unresolved, contribute to the overall pathogenesis of disease onset. This review presents the emerging role of pancreatic islet chemokine production as a critical factor regulating immune cell entry into pancreatic tissue as well as an important facilitator of changes in tissue resident leukocyte activity. Signaling through two specific chemokine receptors (i.e., CXCR2 and CXCR3) is presented to illustrate key points regarding ligand-mediated regulation of innate and adaptive immune cell responses. The prospective roles of chemokine ligands and their corresponding chemokine receptors to influence the onset and progression of autoimmune- and obesity-associated forms of diabetes are discussed.
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MESH Headings
- Adaptive Immunity
- Animals
- Chemokines/genetics
- Chemokines/immunology
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/immunology
- Diabetes Mellitus, Type 2/pathology
- Disease Models, Animal
- Gene Expression Regulation
- Humans
- Immunity, Innate
- Inflammation
- Islets of Langerhans/immunology
- Islets of Langerhans/pathology
- Leukocytes/immunology
- Leukocytes/pathology
- Obesity/genetics
- Obesity/immunology
- Obesity/pathology
- Receptors, CXCR3/genetics
- Receptors, CXCR3/immunology
- Receptors, Interleukin-8B/genetics
- Receptors, Interleukin-8B/immunology
- Signal Transduction
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Affiliation(s)
- J Jason Collier
- Laboratory of Islet Biology and InflammationPennington Biomedical Research Center, Baton Rouge, Louisiana, USA
- Department of SurgeryGraduate School of Medicine, University of Tennessee Health Science Center, Knoxville, Tennessee, USA
| | - Tim E Sparer
- Department of MicrobiologyUniversity of Tennessee, Knoxville, Knoxville, Tennessee, USA
| | - Michael D Karlstad
- Department of SurgeryGraduate School of Medicine, University of Tennessee Health Science Center, Knoxville, Tennessee, USA
| | - Susan J Burke
- Laboratory of ImmunogeneticsPennington Biomedical Research Center, Baton Rouge, Louisiana, USA
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Chien LC, Bowden DW, Chiu YF. Region-based association tests for sequencing data on survival traits. Genet Epidemiol 2017; 41:511-522. [DOI: 10.1002/gepi.22054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 03/27/2017] [Accepted: 03/27/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Li-Chu Chien
- Center for Fundamental Science; Kaohsiung Medical University; Kaohsiung Taiwan
| | - Donald W. Bowden
- Center for Diabetes Research, Wake Forest School of Medicine; Winston-Salem North Carolina United States of America
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine; Winston-Salem North Carolina United States of America
- Department of Biochemistry; Wake Forest School of Medicine; Winston-Salem North Carolina United States of America
| | - Yen-Feng Chiu
- Institute of Population Health Sciences; National Health Research Institutes; Miaoli Taiwan
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30
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Dyslipidemia rather than Type 2 Diabetes Mellitus or Chronic Periodontitis Affects the Systemic Expression of Pro- and Anti-Inflammatory Genes. Mediators Inflamm 2017; 2017:1491405. [PMID: 28316372 PMCID: PMC5337859 DOI: 10.1155/2017/1491405] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 01/26/2017] [Indexed: 12/16/2022] Open
Abstract
A high percentage of type 2 diabetes mellitus (T2D) patients are also affected by dyslipidemia and chronic periodontitis (CP), but no studies have determined the gene expression in patients that are simultaneously affected by all three diseases. We investigated the systemic expression of immune-related genes in T2D, dyslipidemia, and CP patients. One hundred and fifty patients were separated into five groups containing 30 individuals each: (G1) poorly controlled T2D with dyslipidemia and CP; (G2) well-controlled T2D with dyslipidemia and CP; (G3) normoglycemic individuals with dyslipidemia and CP; (G4) healthy individuals with CP; (G5) systemic and periodontally healthy individuals. Blood analyses of lipid and glycemic profiles were carried out. The expression of genes, including IL10, JAK1, STAT3, SOCS3, IP10, ICAM1, IFNA, IFNG, STAT1, and IRF1, was investigated by RT-qPCR. Patients with dyslipidemia demonstrated statistically higher expression of the IL10 and IFNA genes, while IFNG, IP10, IRF1, JAK1, and STAT3 were lower in comparison with nondyslipidemic patients. Anti-inflammatory genes, such as IL10, positively correlated with parameters of glucose, lipid, and periodontal profiles, while proinflammatory genes, such as IFNG, were negatively correlated with these parameters. We conclude that dyslipidemia appears to be the primary disease that is associated with gene expression of immune-related genes, while parameters of T2D and CP were correlated with the expression of these important immune genes.
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31
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Burke SJ, Karlstad MD, Eder AE, Regal KM, Lu D, Burk DH, Collier JJ. Pancreatic β-Cell production of CXCR3 ligands precedes diabetes onset. Biofactors 2016; 42:703-715. [PMID: 27325565 PMCID: PMC5177512 DOI: 10.1002/biof.1304] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/18/2016] [Indexed: 12/18/2022]
Abstract
Type 1 diabetes mellitus (T1DM) results from immune cell-mediated reductions in function and mass of the insulin-producing β-cells within the pancreatic islets. While the initial trigger(s) that initiates the autoimmune process is unknown, there is a leukocytic infiltration that precedes islet β-cell death and dysfunction. Herein, we demonstrate that genes encoding the chemokines CXCL9, 10, and 11 are primary response genes in pancreatic β-cells and are also elevated as part of the inflammatory response in mouse, rat, and human islets. We further established that STAT1 participates in the transcriptional control of these genes in response to the pro-inflammatory cytokines IL-1β and IFN-γ. STAT1 is phosphorylated within five minutes after β-cell exposure to IFN-γ, with subsequent occupancy at proximal and distal response elements within the Cxcl9 and Cxcl11 gene promoters. This increase in STAT1 binding is coupled to the rapid appearance of chemokine transcript. Moreover, circulating levels of chemokines that activate CXCR3 are elevated in non-obese diabetic (NOD) mice, consistent with clinical findings in human diabetes. We also report herein that mice with genetic deletion of CXCR3 (receptor for ligands CXCL9, 10, and 11) exhibit a delay in diabetes development after being injected with multiple low doses of streptozotocin. Therefore, we conclude that production of CXCL9, 10, and 11 from islet β-cells controls leukocyte migration and activity into pancreatic tissue, which ultimately influences islet β-cell mass and function. © 2016 BioFactors, 42(6):703-715, 2016.
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Affiliation(s)
- Susan J. Burke
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, LA
| | - Michael D. Karlstad
- Department of Surgery, Graduate School of Medicine, University of Tennessee Health Science Center, Knoxville, TN
| | - Adrianna E. Eder
- Department of Surgery, Graduate School of Medicine, University of Tennessee Health Science Center, Knoxville, TN
| | - Kellie M. Regal
- Department of Surgery, Graduate School of Medicine, University of Tennessee Health Science Center, Knoxville, TN
| | - Danhong Lu
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC
| | - David H. Burk
- Cell Biology and Bioimaging Core Facility, Pennington Biomedical Research Center, Baton Rouge, LA
| | - J. Jason Collier
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, LA
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32
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Ganesan S, Pham D, Jing Y, Farazuddin M, Hudy MH, Unger B, Comstock AT, Proud D, Lauring AS, Sajjan US. TLR2 Activation Limits Rhinovirus-Stimulated CXCL-10 by Attenuating IRAK-1-Dependent IL-33 Receptor Signaling in Human Bronchial Epithelial Cells. THE JOURNAL OF IMMUNOLOGY 2016; 197:2409-20. [PMID: 27503209 DOI: 10.4049/jimmunol.1502702] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 07/07/2016] [Indexed: 12/15/2022]
Abstract
Airway epithelial cells are the major target for rhinovirus (RV) infection and express proinflammatory chemokines and antiviral cytokines that play a role in innate immunity. Previously, we demonstrated that RV interaction with TLR2 causes ILR-associated kinase-1 (IRAK-1) depletion in both airway epithelial cells and macrophages. Further, IRAK-1 degradation caused by TLR2 activation was shown to inhibit ssRNA-induced IFN expression in dendritic cells. Therefore, in this study, we examined the role of TLR2 and IRAK-1 in RV-induced IFN-β, IFN-λ1, and CXCL-10, which require signaling by viral RNA. In airway epithelial cells, blocking TLR2 enhanced RV-induced expression of IFNs and CXCL-10. By contrast, IRAK-1 inhibition abrogated RV-induced expression of CXCL-10, but not IFNs in these cells. Neutralization of IL-33 or its receptor, ST2, which requires IRAK-1 for signaling, inhibited RV-stimulated CXCL-10 expression. In addition, RV induced expression of both ST2 and IL-33 in airway epithelial cells. In macrophages, however, RV-stimulated CXCL-10 expression was primarily dependent on TLR2/IL-1R. Interestingly, in a mouse model of RV infection, blocking ST2 not only attenuated RV-induced CXCL-10, but also lung inflammation. Finally, influenza- and respiratory syncytial virus-induced CXCL-10 was also found to be partially dependent on IL-33/ST2/IRAK-1 signaling in airway epithelial cells. Together, our results indicate that RV stimulates CXCL-10 expression via the IL-33/ST2 signaling axis, and that TLR2 signaling limits RV-induced CXCL-10 via IRAK-1 depletion at least in airway epithelial cells. To our knowledge, this is the first report to demonstrate the role of respiratory virus-induced IL-33 in the induction of CXCL-10 in airway epithelial cells.
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Affiliation(s)
- Shyamala Ganesan
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109
| | - Duc Pham
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109
| | - Yaxun Jing
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109
| | - Mohammad Farazuddin
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109
| | - Magdalena H Hudy
- Department of Physiology & Pharmacology, University of Calgary Faculty of Medicine, Calgary, Alberta T2N 4N1, Canada
| | - Benjamin Unger
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109
| | - Adam T Comstock
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109
| | - David Proud
- Department of Physiology & Pharmacology, University of Calgary Faculty of Medicine, Calgary, Alberta T2N 4N1, Canada
| | - Adam S Lauring
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109; and Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109
| | - Uma S Sajjan
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109;
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Beg AA, Gray JE. HDAC inhibitors with PD-1 blockade: a promising strategy for treatment of multiple cancer types? Epigenomics 2016; 8:1015-7. [PMID: 27410519 DOI: 10.2217/epi-2016-0066] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Amer A Beg
- Departments of Immunology & Thoracic Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Jhanelle E Gray
- Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
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34
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Zheng H, Zhao W, Yan C, Watson CC, Massengill M, Xie M, Massengill C, Noyes DR, Martinez GV, Afzal R, Chen Z, Ren X, Antonia SJ, Haura EB, Ruffell B, Beg AA. HDAC Inhibitors Enhance T-Cell Chemokine Expression and Augment Response to PD-1 Immunotherapy in Lung Adenocarcinoma. Clin Cancer Res 2016; 22:4119-32. [PMID: 26964571 DOI: 10.1158/1078-0432.ccr-15-2584] [Citation(s) in RCA: 234] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/06/2016] [Indexed: 12/24/2022]
Abstract
PURPOSE A significant limitation of checkpoint blockade immunotherapy is the relatively low response rate (e.g., ∼20% with PD-1 blockade in lung cancer). In this study, we tested whether strategies that increase T-cell infiltration to tumors can be efficacious in enhancing immunotherapy response. EXPERIMENTAL DESIGN We performed an unbiased screen to identify FDA-approved oncology agents with an ability to enhance T-cell chemokine expression with the goal of identifying agents capable of augmenting immunotherapy response. Identified agents were tested in multiple lung tumor models as single agents and in combination with PD-1 blockade. Additional molecular and cellular analysis of tumors was used to define underlying mechanisms. RESULTS We found that histone deacetylase (HDAC) inhibitors (HDACi) increased expression of multiple T-cell chemokines in cancer cells, macrophages, and T cells. Using the HDACi romidepsin in vivo, we observed increased chemokine expression, enhanced T-cell infiltration, and T-cell-dependent tumor regression. Importantly, romidepsin significantly enhanced the response to PD-1 blockade immunotherapy in multiple lung tumor models, including nearly complete rejection in two models. Combined romidepsin and PD-1 blockade also significantly enhanced activation of tumor-infiltrating T cells. CONCLUSIONS These results provide evidence for a novel role of HDACs in modulating T-cell chemokine expression in multiple cell types. In addition, our findings indicate that pharmacologic induction of T-cell chemokine expression represents a conceptually novel approach for enhancing immunotherapy response. Finally, these results suggest that combination of HDAC inhibitors with PD-1 blockade represents a promising strategy for lung cancer treatment. Clin Cancer Res; 22(16); 4119-32. ©2016 AACR.
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Affiliation(s)
- Hong Zheng
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida
| | - Weipeng Zhao
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Cihui Yan
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Crystina C Watson
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Department of Cancer Biology PhD Program, University of South Florida, Tampa, Florida
| | | | - Mengyu Xie
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Department of Cancer Biology PhD Program, University of South Florida, Tampa, Florida
| | | | - David R Noyes
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida
| | - Gary V Martinez
- Department of Cancer Imaging and Metabolism, Moffitt Cancer Center, Tampa, Florida
| | - Roha Afzal
- Department of Cancer Imaging and Metabolism, Moffitt Cancer Center, Tampa, Florida
| | - Zhihua Chen
- Department of Bioinformatics, Moffitt Cancer Center, Tampa, Florida
| | - Xiubao Ren
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Scott J Antonia
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Eric B Haura
- Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Brian Ruffell
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Department of Breast Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Amer A Beg
- Department of Immunology, Moffitt Cancer Center, Tampa, Florida. Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida.
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35
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Chien LC, Hsu FC, Bowden DW, Chiu YF. Generalization of Rare Variant Association Tests for Longitudinal Family Studies. Genet Epidemiol 2016; 40:101-12. [PMID: 26783077 DOI: 10.1002/gepi.21951] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 11/19/2015] [Accepted: 11/19/2015] [Indexed: 11/06/2022]
Abstract
Given the functional relevance of many rare variants, their identification is frequently critical for dissecting disease etiology. Functional variants are likely to be aggregated in family studies enriched with affected members, and this aggregation increases the statistical power to detect rare variants associated with a trait of interest. Longitudinal family studies provide additional information for identifying genetic and environmental factors associated with disease over time. However, methods to analyze rare variants in longitudinal family data remain fairly limited. These methods should be capable of accounting for different sources of correlations and handling large amounts of sequencing data efficiently. To identify rare variants associated with a phenotype in longitudinal family studies, we extended pedigree-based burden (BT) and kernel (KS) association tests to genetic longitudinal studies. Generalized estimating equation (GEE) approaches were used to generalize the pedigree-based BT and KS to multiple correlated phenotypes under the generalized linear model framework, adjusting for fixed effects of confounding factors. These tests accounted for complex correlations between repeated measures of the same phenotype (serial correlations) and between individuals in the same family (familial correlations). We conducted comprehensive simulation studies to compare the proposed tests with mixed-effects models and marginal models, using GEEs under various configurations. When the proposed tests were applied to data from the Diabetes Heart Study, we found exome variants of POMGNT1 and JAK1 genes were associated with type 2 diabetes.
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Affiliation(s)
- Li-Chu Chien
- Institute of Statistical Science, Academia Sinica, Taipei, Taiwan
| | - Fang-Chi Hsu
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Donald W Bowden
- Center for Diabetes Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America.,Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America.,Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Yen-Feng Chiu
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan
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36
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Ishiguro-Oonuma T, Ochiai K, Hashizume K, Morimatsu M. The role of IFN-γ in regulating Nfkbiz expression in epidermal keratinocytes. Biomed Res 2016; 36:103-7. [PMID: 25876660 DOI: 10.2220/biomedres.36.103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Nfkbiz is an inhibitor of nuclear factor κB (IκB) protein localized to the nucleus. We previously found that Nfkbiz gene-disrupted mice showed atopic dermatitis-like lesion, implying the important role of Nfkbiz in skin homeostasis. The purpose of this study was to examine the effect of interferon (IFN)-γ on Nfkbiz expression in keratinocytes. IFN-γ induced Nfkbiz expression at a comparable level to IL-1. Promoter analysis revealed that interferon-stimulated response element (ISRE) located in the Nfkbiz promoter region is important for responding to the stimulation. Interestingly, IFN-γ and IL-1 displayed synergism in terms of inducing Nfkbiz expression. By using selective inhibitors, we found that Janus activated kinase (JAK) 1 and nuclear factor (NF)-κB are important for Nfkbiz expression after IFN-γ stimulation and for synergism between IFN-γ and IL-1. These findings indicate a possible important role of Nfkbiz in modulating the progression of inflammatory diseases in which IFN-γ and IL-1 are abundant.
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37
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Burke SJ, Stadler K, Lu D, Gleason E, Han A, Donohoe DR, Rogers RC, Hermann GE, Karlstad MD, Collier JJ. IL-1β reciprocally regulates chemokine and insulin secretion in pancreatic β-cells via NF-κB. Am J Physiol Endocrinol Metab 2015; 309:E715-26. [PMID: 26306596 PMCID: PMC4609876 DOI: 10.1152/ajpendo.00153.2015] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 08/17/2015] [Indexed: 01/04/2023]
Abstract
Proinflammatory cytokines impact islet β-cell mass and function by altering the transcriptional activity within pancreatic β-cells, producing increases in intracellular nitric oxide abundance and the synthesis and secretion of immunomodulatory proteins such as chemokines. Herein, we report that IL-1β, a major mediator of inflammatory responses associated with diabetes development, coordinately and reciprocally regulates chemokine and insulin secretion. We discovered that NF-κB controls the increase in chemokine transcription and secretion as well as the decrease in both insulin secretion and proliferation in response to IL-1β. Nitric oxide production, which is markedly elevated in pancreatic β-cells exposed to IL-1β, is a negative regulator of both glucose-stimulated insulin secretion and glucose-induced increases in intracellular calcium levels. By contrast, the IL-1β-mediated production of the chemokines CCL2 and CCL20 was not influenced by either nitric oxide levels or glucose concentration. Instead, the synthesis and secretion of CCL2 and CCL20 in response to IL-1β were dependent on NF-κB transcriptional activity. We conclude that IL-1β-induced transcriptional reprogramming via NF-κB reciprocally regulates chemokine and insulin secretion while also negatively regulating β-cell proliferation. These findings are consistent with NF-κB as a major regulatory node controlling inflammation-associated alterations in islet β-cell function and mass.
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Affiliation(s)
- Susan J Burke
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Krisztian Stadler
- Laboratory of Oxidative Stress and Disease, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Danhong Lu
- Duke Molecular Physiology Institute, Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, North Carolina
| | - Evanna Gleason
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana
| | - Anna Han
- Department of Nutrition, University of Tennessee, Knoxville, Knoxville, Tennessee
| | - Dallas R Donohoe
- Department of Nutrition, University of Tennessee, Knoxville, Knoxville, Tennessee
| | - Richard C Rogers
- Laboratory of Autonomic Neuroscience, Pennington Biomedical Research Center, Baton Rouge, Louisiana; and
| | - Gerlinda E Hermann
- Laboratory of Autonomic Neuroscience, Pennington Biomedical Research Center, Baton Rouge, Louisiana; and
| | - Michael D Karlstad
- Department of Surgery, Graduate School of Medicine, University of Tennessee Medical Center, Knoxville, Tennessee
| | - J Jason Collier
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana;
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Anti-Inflammatory Effects of a Methanol Extract from the Marine Sponge Geodia cydonium on the Human Breast Cancer MCF-7 Cell Line. Mediators Inflamm 2015; 2015:204975. [PMID: 26491222 PMCID: PMC4600500 DOI: 10.1155/2015/204975] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 01/19/2015] [Accepted: 01/20/2015] [Indexed: 01/03/2023] Open
Abstract
Many research groups are working to find new possible anti-inflammatory molecules, and marine sponges represent a rich source of biologically active compounds with pharmacological applications. In the present study, we tested different concentrations of the methanol extract from the marine sponge, Geodia cydonium, on normal human breast epithelial cells (MCF-10A) and human breast cancer cells (MCF-7). Our results show that this extract has no cytotoxic effects on both cell lines whereas it induces a decrease in levels of VEGF and five proinflammatory cytokines (CCL2, CXCL8, CXCL10, IFN-γ, and TNF-α) only in MCF-7 cells in a dose-dependent manner, thereby indicating an anti-inflammatory effect. Moreover, interactomic analysis suggests that all six cytokines are involved in a network and are connected with some HUB nodes such as NF-kB subunits and ESR1 (estrogen receptor 1). We also report a decrease in the expression of two NFKB1 and c-Rel subunits by RT-qPCR experiments only in MCF-7 cells after extract treatment, confirming NF-kB inactivation. These data highlight the potential of G. cydonium for future drug discovery against major diseases, such as breast cancer.
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High Pulmonary Levels of IL-6 and IL-1β in Children with Chronic Suppurative Lung Disease Are Associated with Low Systemic IFN-γ Production in Response to Non-Typeable Haemophilus influenzae. PLoS One 2015; 10:e0129517. [PMID: 26066058 PMCID: PMC4466570 DOI: 10.1371/journal.pone.0129517] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 05/08/2015] [Indexed: 11/22/2022] Open
Abstract
Non-typeable Haemophilus influenzae (NTHi) is commonly associated with chronic suppurative lung disease in children. We have previously shown that children with chronic suppurative lung disease have a reduced capacity to produce IFN-γ in response to NTHi compared with healthy control children. The aim of this study was to determine if deficient NTHi-specific IFN-γ production is associated with heightened systemic or airway inflammation. We measured a panel of cytokines (IFN-γ, IL-1β, IL-6, IL-8, IL-12 p70), antimicrobial proteins (LL-37, IP-10) as well as cellular and clinical factors associated with airway and systemic inflammation in 70 children with chronic suppurative lung disease. IFN-γ was measured in peripheral blood mononuclear cells challenged in vitro with live NTHi. Regression analysis was used to assess the association between the systemic and airway inflammation and the capacity to produce IFN-γ. On multivariate regression, NTHi-specific IFN-γ production was significantly negatively associated with the BAL concentrations of the inflammatory cytokines IL-6 (β=-0.316; 95%CI -0.49, -0.14; p=0.001) and IL-1β (β=-0.023; 95%CI -0.04, -0.01; p=0.001). This association was independent of bacterial or viral infection, BAL cellularity and the severity of bronchiectasis (using modified Bhalla score on chest CT scans). We found limited evidence of systemic inflammation in children with chronic suppurative lung disease. In summary, increased local airway inflammation is associated with a poorer systemic cell-mediated immune response to NTHi in children with chronic suppurative lung disease. These data support the emerging body of evidence that impaired cell-mediated immune responses and dysregulated airway inflammation may be linked and contribute to the pathobiology of chronic suppurative lung disease.
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Transcriptional regulation of chemokine genes: a link to pancreatic islet inflammation? Biomolecules 2015; 5:1020-34. [PMID: 26018641 PMCID: PMC4496708 DOI: 10.3390/biom5021020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 05/12/2015] [Indexed: 12/18/2022] Open
Abstract
Enhanced expression of chemotactic cytokines (aka chemokines) within pancreatic islets likely contributes to islet inflammation by regulating the recruitment and activation of various leukocyte populations, including macrophages, neutrophils, and T-lymphocytes. Because of the powerful actions of these chemokines, precise transcriptional control is required. In this review, we highlight what is known about the signals and mechanisms that govern the transcription of genes encoding specific chemokine proteins in pancreatic islet β-cells, which include contributions from the NF-κB and STAT1 pathways. We further discuss increased chemokine expression in pancreatic islets during autoimmune-mediated and obesity-related development of diabetes.
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CCL20 is elevated during obesity and differentially regulated by NF-κB subunits in pancreatic β-cells. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2015; 1849:637-52. [PMID: 25882704 DOI: 10.1016/j.bbagrm.2015.03.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/05/2015] [Accepted: 03/30/2015] [Indexed: 12/20/2022]
Abstract
Enhanced leukocytic infiltration into pancreatic islets contributes to inflammation-based diminutions in functional β-cell mass. Insulitis (aka islet inflammation), which can be present in both T1DM and T2DM, is one factor influencing pancreatic β-cell death and dysfunction. IL-1β, an inflammatory mediator in both T1DM and T2DM, acutely (within 1h) induced expression of the CCL20 gene in rat and human islets and clonal β-cell lines. Transcriptional induction of CCL20 required the p65 subunit of NF-κB to replace the p50 subunit at two functional κB sites within the CCL20 proximal gene promoter. The NF-κB p50 subunit prevents CCL20 gene expression during unstimulated conditions and overexpression of p50 reduces CCL20, but enhances cyclooxygenase-2 (COX-2), transcript accumulation after exposure to IL-1β. We also identified differential recruitment of specific co-activator molecules to the CCL20 gene promoter, when compared with the CCL2 and COX2 genes, revealing distinct transcriptional requirements for individual NF-κB responsive genes. Moreover, IL-1β, TNF-α and IFN-γ individually increased the expression of CCR6, the receptor for CCL20, on the surface of human neutrophils. We further found that the chemokine CCL20 is elevated in serum from both genetically obese db/db mice and in C57BL6/J mice fed a high-fat diet. Taken together, these results are consistent with a possible activation of the CCL20-CCR6 axis in diseases with inflammatory components. Thus, interfering with this signaling pathway, either at the level of NF-κB-mediated chemokine production, or downstream receptor activation, could be a potential therapeutic target to offset inflammation-associated tissue dysfunction in obesity and diabetes.
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Dietary polyherbal supplementation decreases CD3+ cell infiltration into pancreatic islets and prevents hyperglycemia in nonobese diabetic mice. Nutr Res 2015; 35:328-36. [DOI: 10.1016/j.nutres.2014.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 01/26/2023]
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Kelly KJ, Liu Y, Zhang J, Dominguez JH. Renal C3 complement component: feed forward to diabetic kidney disease. Am J Nephrol 2015; 41:48-56. [PMID: 25662584 DOI: 10.1159/000371426] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 12/02/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND Diabetic nephropathy is the main cause of end-stage renal disease and has reached epidemic proportions. METHODS Comprehensive genomic profiling (RNAseq) was employed in the ZS (F1 hybrids of Zucker and spontaneously hypertensive heart failure) model of diabetic nephropathy. Controls were lean littermates. RESULTS Diabetic nephropathy in obese, diabetic ZS was accelerated by a single episode of renal ischemia (DI). This rapid renal decline was accompanied by the activation of the renal complement system in DI, and to a lesser extent in sham-operated diabetic rats (DS). In DI there were significant increases in renal mRNA encoding C3, C4, C5, C6, C8, and C9 over sham-operated lean normal controls (LS). Moreover, mRNAs encoding the receptors for the anaphylatoxins C3a and C5a were also significantly increased in DI compared to LS. The classic complement pathway was activated in diabetic kidneys with significant increases of C1qa, C1qb, and C1qc mRNAs in DI over LS. In addition, critical regulators of complement activation were significantly attenuated in DI and DS. These included mRNAs encoding CD55, decay accelerating factor, and CD59, which inhibit the membrane attack complex. C3, C4, and C9 proteins were demonstrated in renal tubules and glomeruli. The complement RNAseq data were incorporated into a gene network showing interactions among C3-generating renal tubular cells and other immune competent migratory cells. CONCLUSIONS We conclude that local activation of the complement system mediates renal injury in diabetic nephropathy.
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Affiliation(s)
- Katherine J Kelly
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Ind., USA
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44
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Drabe CH, Blauenfeldt T, Ruhwald M. ELISA-based assay for IP-10 detection from filter paper samples. Methods Mol Biol 2015; 1172:27-37. [PMID: 24908292 DOI: 10.1007/978-1-4939-0928-5_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
IP-10 is a small pro-inflammatory chemokine secreted primarily from monocytes and fibroblasts. Alterations in IP-10 levels have been associated with inflammatory conditions including viral and bacterial infections, immune dysfunction, and tumor development. IP-10 is increasingly recognized as a biomarker that predicts severity of various diseases and can be used in the immunodiagnostics of Mycobacterium tuberculosis and cytomegalovirus infection. Here, we describe an ELISA-based method to detect IP-10 from dried blood and plasma spot samples.
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Affiliation(s)
- Camilla Heldbjerg Drabe
- Department of Pulmonary and Infectious Diseases, Copenhagen University Hospital of North Zealand, Hillerød, Denmark,
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45
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Angiolilli C, Grabiec AM, Ferguson BS, Ospelt C, Malvar Fernandez B, van Es IE, van Baarsen LGM, Gay S, McKinsey TA, Tak PP, Baeten DL, Reedquist KA. Inflammatory cytokines epigenetically regulate rheumatoid arthritis fibroblast-like synoviocyte activation by suppressing HDAC5 expression. Ann Rheum Dis 2014; 75:430-8. [PMID: 25452308 DOI: 10.1136/annrheumdis-2014-205635] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 11/07/2014] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Epigenetic modifications play an important role in the regulation of gene transcription and cellular function. Here, we examined if pro-inflammatory factors present in the inflamed joint of patients with rheumatoid arthritis (RA) could regulate histone deacetylase (HDAC) expression and function in fibroblast-like synoviocytes (FLS). METHODS Protein acetylation in synovial tissue was assessed by immunohistochemistry. The mRNA levels of HDAC family members and inflammatory mediators in the synovial tissue and the changes in HDAC expression in RA FLS were measured by quantitative (q) PCR. FLS were either transfected with HDAC5 siRNA or transduced with adenoviral vector encoding wild-type HDAC5 and the effects of HDAC5 manipulation were examined by qPCR arrays, ELISA and ELISA-based assays. RESULTS Synovial class I HDAC expression was associated with local expression of tumour necrosis factor (TNF) and matrix metalloproteinase-1, while class IIa HDAC5 expression was inversely associated with parameters of disease activity (erythrocyte sedimentation rate, C-reactive protein, Disease Activity Score in 28 Joints). Interleukin (IL)-1β or TNF stimulation selectively suppressed HDAC5 expression in RA FLS, which was sufficient and required for optimal IFNB, CXCL9, CXCL10 and CXCL11 induction by IL-1β, associated with increased nuclear accumulation of the transcription factor, interferon regulatory factor 1(IRF1). CONCLUSIONS Inflammatory cytokines suppress RA FLS HDAC5 expression, promoting nuclear localisation of IRF1 and transcription of a subset of type I interferon response genes. Our results identify HDAC5 as a novel inflammatory mediator in RA, and suggest that strategies rescuing HDAC5 expression in vivo, or the development of HDAC inhibitors not affecting HDAC5 activity, may have therapeutic applications in RA treatment.
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Affiliation(s)
- Chiara Angiolilli
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Aleksander M Grabiec
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Bradley S Ferguson
- Division of Cardiology, Department of Medicine, University of Colorado Denver, Aurora, Colorado, USA
| | - Caroline Ospelt
- Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Beatriz Malvar Fernandez
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Inge E van Es
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Lisa G M van Baarsen
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Steffen Gay
- Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Timothy A McKinsey
- Division of Cardiology, Department of Medicine, University of Colorado Denver, Aurora, Colorado, USA
| | - Paul P Tak
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands GlaxoSmithKline, Stevenage, UK Cambridge University, Cambridge, UK
| | - Dominique L Baeten
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Kris A Reedquist
- Department of Experimental Immunology and Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Dahllöf MS, Christensen DP, Harving M, Wagner BK, Mandrup-Poulsen T, Lundh M. HDAC inhibitor-mediated beta-cell protection against cytokine-induced toxicity is STAT1 Tyr701 phosphorylation independent. J Interferon Cytokine Res 2014; 35:63-70. [PMID: 25062500 DOI: 10.1089/jir.2014.0022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Histone deacetylase (HDAC) inhibition protects pancreatic beta-cells against apoptosis induced by the combination of the proinflammatory cytokines interleukin (IL)-1β and interferon (IFN)-γ. Decreased expression of cell damage-related genes is observed on the transcriptional level upon HDAC inhibition using either IL-1β or IFN-γ alone. Whereas HDAC inhibition has been shown to regulate NFκB-activity, related primarily to IL-1β signaling, it is unknown whether the inhibition of HDACs affect IFN-γ signaling in beta-cells. Further, in non-beta-cells, there is a dispute whether HDAC inhibition regulates IFN-γ signaling at the level of STAT1 Tyr701 phosphorylation. Using different small molecule HDAC inhibitors with varying class selectivity, INS-1E wild type and stable HDAC1-3 knockdown pancreatic INS-1 cell lines, we show that IFN-γ-induced Cxcl9 and iNos expression as well as Cxcl9 and GAS reporter activity were decreased by HDAC inhibition in a STAT1 Tyr701 phosphorylation-independent fashion. In fact, knockdown of HDAC1 increased IFN-γ-induced STAT1 phosphorylation.
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Affiliation(s)
- Mattias S Dahllöf
- 1 Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen, Denmark
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Burke SJ, Lu D, Sparer TE, Karlstad MD, Collier JJ. Transcription of the gene encoding TNF-α is increased by IL-1β in rat and human islets and β-cell lines. Mol Immunol 2014; 62:54-62. [PMID: 24972324 DOI: 10.1016/j.molimm.2014.05.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/08/2014] [Accepted: 05/24/2014] [Indexed: 11/28/2022]
Abstract
Synthesis and secretion of immunomodulatory proteins, such as cytokines and chemokines, controls the inflammatory response within pancreatic islets. When this inflammation does not resolve, destruction of pancreatic islet β-cells leads to diabetes mellitus. Production of the soluble mediators of inflammation, such as TNF-α and IL-1β, from resident and invading immune cells, as well as directly from islet β-cells, is also associated with suboptimal islet transplantation outcomes. In this study, we found that IL-1β induces rapid increases in TNF-α mRNA in rat and human islets and the 832/13 clonal β-cell line. The surge in transcription of the TNF-α gene required the inhibitor of kappa B kinase beta (IκKβ), the p65 subunit of the NF-κB and a signal-specific recruitment of RNA polymerase II to the gene promoter. Of note was the increased intracellular production of TNF-α protein in a manner consistent with mRNA accumulation in response to IL-1β, but no detectable secretion of TNF-α into the media. Additionally, TNF-α specifically induces expression of CD11b, but not CD11c, on neutrophils, which could contribute to the inflammatory milieu and diabetes progression. We conclude that activation of the NF-κB pathway in pancreatic β-cells leads to rapid intracellular production of the pro-inflammatory TNF-α protein through a combination of specific histone covalent modifications and NF-κB signaling pathways.
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Affiliation(s)
- Susan J Burke
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, LA 70808, United States
| | - Danhong Lu
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27704, United States
| | - Tim E Sparer
- Department of Microbiology, University of Tennessee, Knoxville, TN 37996, United States
| | - Michael D Karlstad
- Department of Surgery, Graduate School of Medicine, University of Tennessee Medical Center, Knoxville, TN 37920, United States
| | - J Jason Collier
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, LA 70808, United States.
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Jansson D, Rustenhoven J, Feng S, Hurley D, Oldfield RL, Bergin PS, Mee EW, Faull RLM, Dragunow M. A role for human brain pericytes in neuroinflammation. J Neuroinflammation 2014; 11:104. [PMID: 24920309 PMCID: PMC4105169 DOI: 10.1186/1742-2094-11-104] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 05/19/2014] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Brain inflammation plays a key role in neurological disease. Although much research has been conducted investigating inflammatory events in animal models, potential differences in human brain versus rodent models makes it imperative that we also study these phenomena in human cells and tissue. METHODS Primary human brain cell cultures were generated from biopsy tissue of patients undergoing surgery for drug-resistant epilepsy. Cells were treated with pro-inflammatory compounds IFNγ, TNFα, IL-1β, and LPS, and chemokines IP-10 and MCP-1 were measured by immunocytochemistry, western blot, and qRT-PCR. Microarray analysis was also performed on late passage cultures treated with vehicle or IFNγ and IL-1β. RESULTS Early passage human brain cell cultures were a mixture of microglia, astrocytes, fibroblasts and pericytes. Later passage cultures contained proliferating fibroblasts and pericytes only. Under basal culture conditions all cell types showed cytoplasmic NFκB indicating that they were in a non-activated state. Expression of IP-10 and MCP-1 were significantly increased in response to pro-inflammatory stimuli. The two chemokines were expressed in mixed cultures as well as cultures of fibroblasts and pericytes only. The expression of IP-10 and MCP-1 were regulated at the mRNA and protein level, and both were secreted into cell culture media. NFκB nuclear translocation was also detected in response to pro-inflammatory cues (except IFNγ) in all cell types. Microarray analysis of brain pericytes also revealed widespread changes in gene expression in response to the combination of IFNγ and IL-1β treatment including interleukins, chemokines, cellular adhesion molecules and much more. CONCLUSIONS Adult human brain cells are sensitive to cytokine challenge. As expected 'classical' brain immune cells, such as microglia and astrocytes, responded to cytokine challenge but of even more interest, brain pericytes also responded to such challenge with a rich repertoire of gene expression. Immune activation of brain pericytes may play an important role in communicating inflammatory signals to and within the brain interior and may also be involved in blood brain barrier (BBB) disruption . Targeting brain pericytes, as well as microglia and astrocytes, may provide novel opportunities for reducing brain inflammation and maintaining BBB function and brain homeostasis in human brain disease.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Mike Dragunow
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 85 Park Road, Auckland 1023, New Zealand.
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Burke SJ, Lu D, Sparer TE, Masi T, Goff MR, Karlstad MD, Collier JJ. NF-κB and STAT1 control CXCL1 and CXCL2 gene transcription. Am J Physiol Endocrinol Metab 2014; 306:E131-49. [PMID: 24280128 PMCID: PMC3920007 DOI: 10.1152/ajpendo.00347.2013] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diabetes mellitus results from immune cell invasion into pancreatic islets of Langerhans, eventually leading to selective destruction of the insulin-producing β-cells. How this process is initiated is not well understood. In this study, we investigated the regulation of the CXCL1 and CXCL2 genes, which encode proteins that promote migration of CXCR2(+) cells, such as neutrophils, toward secreting tissue. Herein, we found that IL-1β markedly enhanced the expression of the CXCL1 and CXCL2 genes in rat islets and β-cell lines, which resulted in increased secretion of each of these proteins. CXCL1 and CXCL2 also stimulated the expression of specific integrin proteins on the surface of human neutrophils. Mutation of a consensus NF-κB genomic sequence present in both gene promoters reduced the ability of IL-1β to promote transcription. In addition, IL-1β induced binding of the p65 and p50 subunits of NF-κB to these consensus κB regulatory elements as well as to additional κB sites located near the core promoter regions of each gene. Additionally, serine-phosphorylated STAT1 bound to the promoters of the CXCL1 and CXCL2 genes. We further found that IL-1β induced specific posttranslational modifications to histone H3 in a time frame congruent with transcription factor binding and transcript accumulation. We conclude that IL-1β-mediated regulation of the CXCL1 and CXCL2 genes in pancreatic β-cells requires stimulus-induced changes in histone chemical modifications, recruitment of the NF-κB and STAT1 transcription factors to genomic regulatory sequences within the proximal gene promoters, and increases in phosphorylated forms of RNA polymerase II.
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Affiliation(s)
- Susan J Burke
- Department of Nutrition, University of Tennessee, Knoxville, Tennessee
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50
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Burke SJ, Updegraff BL, Bellich RM, Goff MR, Lu D, Minkin SC, Karlstad MD, Collier JJ. Regulation of iNOS gene transcription by IL-1β and IFN-γ requires a coactivator exchange mechanism. Mol Endocrinol 2013; 27:1724-42. [PMID: 24014650 DOI: 10.1210/me.2013-1159] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The proinflammatory cytokines IL-1β and IFN-γ decrease functional islet β-cell mass in part through the increased expression of specific genes, such as inducible nitric oxide synthase (iNOS). Dysregulated iNOS protein accumulation leads to overproduction of nitric oxide, which induces DNA damage, impairs β-cell function, and ultimately diminishes cellular viability. However, the transcriptional mechanisms underlying cytokine-mediated expression of the iNOS gene are not completely understood. Herein, we demonstrated that individual mutations within the proximal and distal nuclear factor-κB sites impaired cytokine-mediated transcriptional activation. Surprisingly, mutating IFN-γ-activated site (GAS) elements in the iNOS gene promoter, which are classically responsive to IFN-γ, modulated transcriptional sensitivity to IL-1β. Transcriptional sensitivity to IL-1β was increased by generation of a consensus GAS element and decreased correspondingly with 1 or 2 nucleotide divergences from the consensus sequence. The nuclear factor-κB subunits p65 and p50 bound to the κB response elements in an IL-1β-dependent manner. IL-1β also promoted binding of serine-phosphorylated signal transducer and activator of transcription-1 (STAT1) (Ser727) but not tyrosine-phosphorylated STAT1 (Tyr701) to GAS elements. However, phosphorylation at Tyr701 was required for IFN-γ to potentiate the IL-1β response. Furthermore, coactivator p300 and coactivator arginine methyltransferase were recruited to the iNOS gene promoter with concomitant displacement of the coactivator CREB-binding protein in cells exposed to IL-1β. Moreover, these coordinated changes in factor recruitment were associated with alterations in acetylation, methylation, and phosphorylation of histone proteins. We conclude that p65 and STAT1 cooperate to control iNOS gene transcription in response to proinflammatory cytokines by a coactivator exchange mechanism. This increase in transcription is also associated with signal-specific chromatin remodeling that leads to RNA polymerase II recruitment and phosphorylation.
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Affiliation(s)
- Susan J Burke
- Department of Nutrition, University of Tennessee, 1215 Cumberland Avenue, 229 JHB, Knoxville, Tennessee 37996-1920.
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