51
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Xu P, Gao J, Shan C, Dunn TJ, Xie X, Xia H, Zou J, Thames BH, Sajja A, Yu Y, Freiberg AN, Vasilakis N, Shi PY, Weaver SC, Wu P. Inhibition of innate immune response ameliorates Zika virus-induced neurogenesis deficit in human neural stem cells. PLoS Negl Trop Dis 2021; 15:e0009183. [PMID: 33657175 PMCID: PMC7959377 DOI: 10.1371/journal.pntd.0009183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 03/15/2021] [Accepted: 01/26/2021] [Indexed: 12/30/2022] Open
Abstract
Global Zika virus (ZIKV) outbreaks and their strong link to microcephaly have raised major public health concerns. ZIKV has been reported to affect the innate immune responses in neural stem/progenitor cells (NS/PCs). However, it is unclear how these immune factors affect neurogenesis. In this study, we used Asian-American lineage ZIKV strain PRVABC59 to infect primary human NS/PCs originally derived from fetal brains. We found that ZIKV overactivated key molecules in the innate immune pathways to impair neurogenesis in a cell stage-dependent manner. Inhibiting the overactivated innate immune responses ameliorated ZIKV-induced neurogenesis reduction. This study thus suggests that orchestrating the host innate immune responses in NS/PCs after ZIKV infection could be promising therapeutic approach to attenuate ZIKV-associated neuropathology.
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Affiliation(s)
- Pei Xu
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Junling Gao
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Chao Shan
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Tiffany J. Dunn
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Xuping Xie
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Hongjie Xia
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Jing Zou
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Beatriz H. Thames
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Amulya Sajja
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Yongjia Yu
- Department of Radiology and Oncology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Alexander N. Freiberg
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Nikos Vasilakis
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, United States of America
- Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, United States of America
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Pei-Yong Shi
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Scott C. Weaver
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, United States of America
- Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, United States of America
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Ping Wu
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
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Yang Q, Ding H, Wei W, Liu J, Wang J, Ren J, Chan W, Wang M, Hao L, Li J, Yue Y. Periodontitis aggravates kidney injury by upregulating STAT1 expression in a mouse model of hypertension. FEBS Open Bio 2021; 11:880-889. [PMID: 33448153 PMCID: PMC7931221 DOI: 10.1002/2211-5463.13081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 01/11/2021] [Indexed: 02/05/2023] Open
Abstract
Periodontitis is an autoimmune disease of periodontal tissues initiated by plaque. It is known that there is a close connection between periodontitis and CKD with hypertension, but the underlying mechanisms are unknown. STAT1 has been reported to play a regulatory role in hypertension and chronic kidney disease (CKD). Here, we investigated whether STAT1 regulates periodontitis-mediated aggravation of kidney injury with accompanying hypertension. A hypertensive renal injury mouse model was established with Nos3 knockout mice, and a periodontitis model was established by implantation with the oral bacteria Porphyromonas gingivalis. The mice were intraperitoneally injected with a STAT1 inhibitor. Periodontitis aggravated kidney injury in hypertensive mice, and upregulation of STAT1 was observed when both periodontitis and hypertension were present; furthermore, STAT1 inhibitor moderated this effect. Moreover, we observed that periodontitis promoted the upregulation of inflammatory and fibrosis gene expression in the kidneys of hypertensive mice. In addition, STAT1 inhibition decreased the expression of pro-inflammatory and pro-fibrotic cytokines in the kidney lesion area. Periodontitis augmented the expression of inflammatory and fibrosis genes by upregulating the expression of STAT1, thereby aggravating kidney injury in the hypertensive mouse model.
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Affiliation(s)
- Qin Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | | | - Wei Wei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Jie Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Jiajia Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Jie Ren
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Weicheng Chan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Min Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Liang Hao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Jinle Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
| | - Yuan Yue
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China
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53
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Wang S, Yuan XH, Wang SQ, Zhao W, Chen XB, Yu B. FDA-approved pyrimidine-fused bicyclic heterocycles for cancer therapy: Synthesis and clinical application. Eur J Med Chem 2021; 214:113218. [PMID: 33540357 DOI: 10.1016/j.ejmech.2021.113218] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/16/2021] [Accepted: 01/18/2021] [Indexed: 12/15/2022]
Abstract
Considerable progress has been made in the development of anticancer agents over the past few decades, and a lot of new anticancer agents from natural and synthetic sources have been produced. Among heterocyclic compounds, pyrimidine-fused bicyclic heterocycles possess a variety of biological activities such as anticancer, antiviral, etc. To date, 147 pyrimidine-fused bicyclic heterocycles have been approved for clinical assessment or are currently being used in clinic, 57 of which have been approved by FDA for clinical treatment of various diseases, and 22 of them are being used in the clinic for the treatment of different cancers. As the potentially privileged scaffolds, pyrimidine-fused bicyclic heterocycles may be used to discover new drugs with similar biological targets and improved therapeutic efficacy. This review aims to provide an overview of the anticancer applications and synthetic routes of 22 approved pyrimidine-fused bicyclic heterocyclic drugs in clinic.
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Affiliation(s)
- Shuai Wang
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Xiao-Han Yuan
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Sai-Qi Wang
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Henan Cancer Institute, NO.127, Dongming Road, Zhengzhou, 450008, PR China
| | - Wen Zhao
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Xiao-Bing Chen
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Henan Cancer Institute, NO.127, Dongming Road, Zhengzhou, 450008, PR China
| | - Bin Yu
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China.
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54
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Lv H, Lv G, Chen C, Zong Q, Jiang G, Ye D, Cui X, He Y, Xiang W, Han Q, Tang L, Yang W, Wang H. NAD + Metabolism Maintains Inducible PD-L1 Expression to Drive Tumor Immune Evasion. Cell Metab 2021; 33:110-127.e5. [PMID: 33171124 DOI: 10.1016/j.cmet.2020.10.021] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 08/04/2020] [Accepted: 10/21/2020] [Indexed: 12/16/2022]
Abstract
NAD+ metabolism is implicated in aging and cancer. However, its role in immune checkpoint regulation and immune evasion remains unclear. Here, we find nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme of the NAD+ biogenesis, drives interferon γ (IFNγ)-induced PD-L1 expression in multiple types of tumors and governs tumor immune evasion in a CD8+ T cell-dependent manner. Mechanistically, NAD+ metabolism maintains activity and expression of methylcytosine dioxygenase Tet1 via α-ketoglutarate (α-KG). IFNγ-activated Stat1 facilitates Tet1 binding to Irf1 to regulate Irf1 demethylation, leading to downstream PD-L1 expression on tumors. Importantly, high NAMPT-expressing tumors are more sensitive to anti-PD-L1 treatment and NAD+ augmentation enhances the efficacy of anti-PD-L1 antibody in immunotherapy-resistant tumors. Collectively, these data delineate an NAD+ metabolism-dependent epigenetic mechanism contributing to tumor immune evasion, and NAD+ replenishment combined with PD-(L)1 antibody provides a promising therapeutic strategy for immunotherapy-resistant tumors.
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Affiliation(s)
- Hongwei Lv
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China; Shanghai Key Laboratory of Hepato-biliary Tumor Biology, Shanghai 200438, China
| | - Guishuai Lv
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China; Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai 200438, China
| | - Cian Chen
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China
| | - Qianni Zong
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China
| | - Guoqing Jiang
- Department of Hepatobiliary Surgery, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu 225000, China
| | - Dan Ye
- Molecular and Cell Biology Lab, Institute of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiuliang Cui
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China
| | - Yufei He
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China
| | - Wei Xiang
- Cancer Research Center, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Qin Han
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China
| | - Liang Tang
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China
| | - Wen Yang
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China.
| | - Hongyang Wang
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; National Center for Liver Cancer, Second Military Medical University, Shanghai 201805, China; Cancer Research Center, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China; Fudan University Shanghai Cancer Center, Shanghai 200032, China.
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55
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Han J, Chen X, Xu J, Chu L, Li R, Sun N, Jiang Z, Liu H, Ge X, Zheng J, Yang J, Ikezoe T. Simultaneous silencing Aurora-A and UHRF1 inhibits colorectal cancer cell growth through regulating expression of DNMT1 and STAT1. Int J Med Sci 2021; 18:3437-3451. [PMID: 34522170 PMCID: PMC8436113 DOI: 10.7150/ijms.61969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/26/2021] [Indexed: 12/13/2022] Open
Abstract
Aurora-A has attracted a great deal of interest as a potential therapeutic target for patients with CRC. However, the outcomes of inhibitors targeting Aurora-A are not as favorable as expected, and the basis behind the ineffectiveness remains unknown. Here, we found that signal transducer and activator of transcription 1 (STAT1) was highly expressed in colorectal cancer (CRC) xenograft mouse models that were resistant to alisertib, an Aurora-A inhibitor. Unexpectedly, we found that alisertib disrupted Aurora-A binding with ubiquitin-like with plant homeodomain and ring finger domain 1 (UHRF1), leading to UHRF1 mediated ubiquitination and degradation of DNA methyltransferase 1 (DNMT1), which in turn resulted in demethylation of CpG islands of STAT1 promoter and STAT1 overexpression. Simultaneous silencing Aurora-A and UHRF1 prevented STAT1 overexpression and effectively inhibited CRC growth. Hence, concomitant targeting Aurora-A and UHRF1 can be a promising therapeutic strategy for CRC.
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Affiliation(s)
- Jing Han
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Xin Chen
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Jiawei Xu
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,National Experimental Demonstration Center for Basic Medicine Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Laili Chu
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Rongqing Li
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Na Sun
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Zhen Jiang
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,National Experimental Demonstration Center for Basic Medicine Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Hongyang Liu
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,National Experimental Demonstration Center for Basic Medicine Education, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Xing Ge
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Junnian Zheng
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Oncology, the first affiliated hospital, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Jing Yang
- Jiangsu Province Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Takayuki Ikezoe
- The Department of Hematology, Fukushima Medical University, Fukushima, Japan
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Dell'Anno I, Martin SA, Barbarino M, Melani A, Silvestri R, Bottaro M, Paolicchi E, Corrado A, Cipollini M, Melaiu O, Giordano A, Luzzi L, Gemignani F, Landi S. Drug-repositioning screening identified fludarabine and risedronic acid as potential therapeutic compounds for malignant pleural mesothelioma. Invest New Drugs 2020; 39:644-657. [PMID: 33300108 PMCID: PMC8068714 DOI: 10.1007/s10637-020-01040-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/25/2020] [Indexed: 12/14/2022]
Abstract
Objectives Malignant pleural mesothelioma (MPM) is an occupational disease mainly due to asbestos exposure. Effective therapies for MPM are lacking, making this tumour type a fatal disease. Materials and Methods In order to meet this need and in view of a future "drug repositioning" approach, here we screened five MPM (Mero-14, Mero-25, IST-Mes2, NCI-H28 and MSTO-211H) and one SV40-immortalized mesothelial cell line (MeT-5A) as a non-malignant model, with a library of 1170 FDA-approved drugs. Results Among several potential compounds, we found that fludarabine (F-araA) and, to a lesser extent, risedronic acid (RIS) were cytotoxic in MPM cells, in comparison to the non-malignant Met-5A cells. In particular, F-araA reduced the proliferation and the colony formation ability of the MPM malignant cells, in comparison to the non-malignant control cells, as demonstrated by proliferation and colony formation assays, in addition to measurement of the phospho-ERK/total-ERK ratio. We have shown that the response to F-araA was not dependent upon the expression of DCK and NT5E enzymes, nor upon their functional polymorphisms (rs11544786 and rs2295890, respectively). Conclusion This drug repositioning screening approach has identified that F-araA could be therapeutically active against MPM cells, in addition to other tumour types, by inhibiting STAT1 expression and nucleic acids synthesis. Further experiments are required to fully investigate this.
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Affiliation(s)
- Irene Dell'Anno
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
| | - Sarah A Martin
- Centre for Cancer Cell and Molecular Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Marcella Barbarino
- Department of Medical Biotechnologies, University of Siena, 53100, Siena, Italy.,Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, 19122, USA
| | - Alessandra Melani
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
| | - Roberto Silvestri
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
| | - Maria Bottaro
- Department of Medical Biotechnologies, University of Siena, 53100, Siena, Italy
| | - Elisa Paolicchi
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
| | - Alda Corrado
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
| | - Monica Cipollini
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
| | - Ombretta Melaiu
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy.,Immuno-Oncology Laboratory, Department of Paediatric Haematology/Oncology and of Cell and Gene Therapy, Ospedale Pediatrico Bambino Gesù, IRCCS, 00165, Rome, Italy
| | - Antonio Giordano
- Department of Medical Biotechnologies, University of Siena, 53100, Siena, Italy.,Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, 19122, USA
| | - Luca Luzzi
- Department of Medicine, Surgery and Neurosciences, Siena University Hospital, 53100, Siena, Italy
| | - Federica Gemignani
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy.
| | - Stefano Landi
- Department of Biology, Genetic Unit, University of Pisa, 56126, Pisa, Italy
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57
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Taefehshokr N, Miao T, Symonds ALJ, Wang P, Li S. Egr2 regulation in T cells is mediated through IFNγ/STAT1 and IL-6/STAT3 signalling pathway. Pathol Res Pract 2020; 216:153259. [PMID: 33099163 DOI: 10.1016/j.prp.2020.153259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 11/18/2022]
Abstract
The immune system is a host defence system to protect the body against foreign invaders. T cells are one of the major components of the immune cells and they are essential for immune responses. Early growth response gene (Egr2) in T cells is important for maintaining immune functions of T cells by promoting adaptive immune responses while controlling inflammation and preventing the development of autoimmune diseases. A study by our group demonstrated the function of Egr2 as a checkpoint regulator controlling the proliferation and differentiation of the T cells. In association, Egr2 and 3 play indispensable role in T cell immune response, but the mechanism regulating Egr2 expression in T cells is still unclear. In this study, we analysed the Egr2 expression mechanism in CD4 T cells under antigen stimulation. We found that Egr2 expression is regulated by different cytokines including IL-2 and IL-4, which increased Egr2 induction in activated T cells. However, inflammatory cytokines, including INFγ and IL-6, suppressed Egr2 expression through STAT1 and STAT3 signalling pathway respectively, highlighting a mechanism for tolergenic immune response on T cells.
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Affiliation(s)
- Nima Taefehshokr
- Division of Biosciences, Department of Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, UK.
| | - Tizong Miao
- The Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, LONDON E1 2AD, UK
| | - Alistair L J Symonds
- The Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, LONDON E1 2AD, UK
| | - Ping Wang
- The Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, LONDON E1 2AD, UK
| | - Suling Li
- Division of Biosciences, Department of Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, UK
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58
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Parashar K, Carpino N. A role for the Sts phosphatases in negatively regulating IFNγ-mediated production of nitric oxide in monocytes. IMMUNITY INFLAMMATION AND DISEASE 2020; 8:523-533. [PMID: 32841534 PMCID: PMC7654413 DOI: 10.1002/iid3.336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 07/01/2020] [Accepted: 07/20/2020] [Indexed: 12/17/2022]
Abstract
Introduction The atypical Sts phosphatases negatively regulate signaling pathways in diverse immune cell types, with two of their molecular targets being the related kinases Syk and Zap‐70. Mice lacking Sts expression (Sts−/−) are resistant to infection by the live vaccine strain (LVS) of Francisella tularensis. Although the mechanisms underlying the enhanced resistance of Sts−/− mice have not been definitively established, Sts−/− bone marrow‐derived monocytes (BMMs) demonstrate greater clearance of intracellular LVS following ex vivo infection, relative to wild type cells. To determine how the Sts proteins regulate monocyte bactericidal properties, we analyzed responses of infected cells. Methods Monocyte bacterial clearance was assayed using ex vivo coculture infections followed by colony‐forming unit analysis of intracellular bacteria. Levels of gene expression were quantified by quantitative reverse‐transcription polymerase chain reaction, levels of Nos2 protein levels were quantified by Western blot analysis, and levels of nitric oxide (NO) were quantified directly using the Griess reagent. We characterized monocyte cytokine production via enzyme‐linked immunosorbent assay. Results We demonstrate that Sts−/− monocyte cultures produce elevated levels of interferon‐γ (IFNγ) after infection, relative to wild type cultures. Sts−/− monocytes also demonstrate heightened responsiveness to IFNγ. Specifically, Sts−/− monocytes produce elevated levels of antimicrobial NO following IFNγ stimulation, and this NO plays an important role in LVS restriction. Additional IFNγ‐stimulated genes, including Ip10 and members of the Gbp gene family, also display heightened upregulation in Sts−/− cells. Both Sts‐1 and Sts‐2 contribute to the regulation of NO production, as evidenced by the responses of monocytes lacking each phosphatase individually. Finally, we demonstrate that the elevated production of IFNγ‐induced NO in Sts−/− monocytes is abrogated following chemical inhibition of Syk kinase. Conclusion Our results indicate a novel role for the Sts enzymes in regulating monocyte antibacterial responses downstream of IFNγ.
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Affiliation(s)
- Kaustubh Parashar
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, New York
| | - Nicholas Carpino
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, New York
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59
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Phosphatase-independent functions of SHP2 and its regulation by small molecule compounds. J Pharmacol Sci 2020; 144:139-146. [PMID: 32921395 DOI: 10.1016/j.jphs.2020.06.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 06/03/2020] [Accepted: 06/08/2020] [Indexed: 12/13/2022] Open
Abstract
SHP2 is a non-receptor protein tyrosine phosphatase encoded by the PTPN11 gene in human. Clinically, SHP2 has been identified as a causal factor of several diseases, such as Noonan syndrome, LEOPARD syndrome as well as myeloid malignancies. Interestingly, both loss-of-function and gain-of-function mutations occur in the PTPN11 gene. Analyses by biochemical and cell biological means as well as probing with small molecule compounds have demonstrated that SHP2 has both phosphatase-dependent and independent functions. In comparison with its phosphatase activity, the non-phosphatase-like function of SHP2 has not been well introduced or summarized. This review mainly focuses on the phosphatase-independent functions and its regulation by small molecule compounds as well as their use for disease therapy.
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Hedl M, Sun R, Abraham C. Disease Risk-Associated Genetic Variants in STAT1 and STAT4 Function in a Complementary Manner to Increase Pattern-Recognition Receptor-Induced Outcomes in Human Macrophages. THE JOURNAL OF IMMUNOLOGY 2020; 205:1406-1418. [PMID: 32661180 DOI: 10.4049/jimmunol.1901112] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 06/08/2020] [Indexed: 12/30/2022]
Abstract
STAT proteins can regulate both pro- and anti-inflammatory cytokine signaling. Therefore, identifying consequences of modulating expression of a given STAT is ultimately critical for determining its potential as a therapeutic target and for defining the mechanisms through which immune-mediated disease variants in STAT genes contribute to disease pathogenesis. Genetic variants in the STAT1/STAT4 region are associated with multiple immune-mediated diseases, including inflammatory bowel disease (IBD). These diseases are characterized by dysregulated cytokine secretion in response to pattern-recognition receptor (PRR) stimulation. We found that the common IBD-associated rs1517352 C risk allele increased both STAT1 and STAT4 expression in human monocyte-derived macrophages (MDMs). We therefore hypothesized that the STAT1/STAT4 variant might regulate PRR-initiated responses in a complementary and cooperative manner because of the important role of autocrine/paracrine cytokines in modulating PRR-initiated signaling. STAT1 and STAT4 were required for PRR- and live bacterial-induced secretion of multiple cytokines. These outcomes were particularly dependent on PRR-initiated autocrine/paracrine IL-12-induced STAT4 activation to generate IFN-γ, with autocrine IFN-γ then signaling through STAT1. STAT1 and STAT4 also promoted bacterial-induced cytokines in intestinal myeloid cells and PRR-enhanced antimicrobial pathways in MDMs. Importantly, MDMs from rs1517352 C IBD risk allele carriers demonstrated increased TLR4-, IFN-γ- and IL-12-induced STAT1 and STAT4 phosphorylation and cytokine secretion and increased TLR4-enhanced antimicrobial pathways. Taken together, STAT1 and STAT4 expression is coregulated by a shared genetic region, and STAT1 /STAT4-immune disease-associated variants modulate IFN-γ- and IL-12-associated outcomes, and in turn, PRR-induced outcomes, highlighting that these genes cooperate to regulate pathways relevant to disease pathogenesis.
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Affiliation(s)
- Matija Hedl
- Department of Internal Medicine, Yale University, New Haven, CT 06520
| | - Rui Sun
- Department of Internal Medicine, Yale University, New Haven, CT 06520
| | - Clara Abraham
- Department of Internal Medicine, Yale University, New Haven, CT 06520
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61
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Zeng G, Lian C, Yang P, Zheng M, Ren H, Wang H. E3-ubiquitin ligase TRIM6 aggravates myocardial ischemia/reperfusion injury via promoting STAT1-dependent cardiomyocyte apoptosis. Aging (Albany NY) 2020; 11:3536-3550. [PMID: 31171760 PMCID: PMC6594808 DOI: 10.18632/aging.101995] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 05/22/2019] [Indexed: 12/26/2022]
Abstract
Cardiomyocyte apoptosis is a major cause of myocardial ischemia/reperfusion (MI/R) injury, in which the activation of the signal transducer and activator of transcription 1 (STAT1) plays an important role. The E3-ubiquitin ligase TRIM6 has been implicated in regulating STAT1 activity, however, whether it is associated with MI/R injury and the underlying mechanism are not determined. In this study, by investigating a mouse MI/R injury model, we show that TRIM6 expression is induced in mouse heart following MI/R injury. Additionally, TRIM6 depletion reduces and its overexpression increases myocardial infarct size, serum creatine phosphokinase (CPK) level and cardiomyocyte apoptosis in mice subjected to MI/R injury, indicating that TRIM6 functions to aggravate MI/R injury. Mechanistically, TRIM6 promotes IKKε-dependent STAT1 activation, and the inhibition of IKKε or STAT1 with the specific inhibitor, CAY10576 or fludarabine, abolishes TRIM6 effects on cardiomyocyte apoptosis and MI/R injury. Similarly, TRIM6 mutant lacking the ability to ubiquitinate IKKε and induce IKKε/STAT1 activation also fails to promote cardiomyocyte apoptosis and MI/R injury. Thus, these results suggest that TRIM6 aggravates MI/R injury through promoting IKKε/STAT1 activation-dependent cardiomyocyte apoptosis, and that TRIM6 might represent a novel therapeutic target for alleviating MI/R injury.
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Affiliation(s)
- Guangwei Zeng
- Department of Cardiology, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China
| | - Chen Lian
- Department of Cardiology, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China
| | - Pei Yang
- Department of Cardiology, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China.,Jiajiang Oil Storage Warehouse, Xining Joint Service Centre, Xining, China
| | - Mingming Zheng
- Department of Health Economic Managment, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China
| | - He Ren
- Department of Cardiology, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China
| | - Haiyan Wang
- Department of Cardiology, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China
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Liu S, Imani S, Deng Y, Pathak JL, Wen Q, Chen Y, Wu J. Targeting IFN/STAT1 Pathway as a Promising Strategy to Overcome Radioresistance. Onco Targets Ther 2020; 13:6037-6050. [PMID: 32606809 PMCID: PMC7321691 DOI: 10.2147/ott.s256708] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/28/2020] [Indexed: 12/14/2022] Open
Abstract
The interferon (IFN)-mediated activation of the Janus kinase (JAK)-signal transducer and activator of transcription 1 (STAT1) signaling is crucial for cell sensitivity to ionizing radiation. Several preclinical studies have reported that the IFN/STAT1 pathway mediates radioresistance in the tumor microenvironment by shielding the immune responses and activating survival signaling pathways. This review focuses on the oncogenic function of the IFN/STAT1 pathway, emphasizing the major signaling pathway in radiation sensitization. Furthermore, it highlights the possibility of mediatory roles of the IFN/STAT1 pathway as a prognostic therapeutic target in the modulation of resistance to radiotherapy and chemotherapy. MicroRNA involved in the regulation of the IFN/STAT1 pathway is also discussed. A better understanding of radiation-induced IFN/STAT1 signaling will open new opportunities for the development of novel therapeutic strategies, as well as define new approaches to enhance radio-immunotherapy efficacy in the treatment of various types of cancers.
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Affiliation(s)
- Shuya Liu
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Saber Imani
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Youcai Deng
- Institute of Materia Medica, College of Pharmacy, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Janak L Pathak
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, People's Republic of China
| | - Qinglian Wen
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Yue Chen
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
| | - Jingbo Wu
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People's Republic of China
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63
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Hunt DWC, Ivanova IA, Dagnino L. DRM02, a novel phosphodiesterase-4 inhibitor with cutaneous anti-inflammatory activity. Tissue Barriers 2020; 8:1765633. [PMID: 32479135 DOI: 10.1080/21688370.2020.1765633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Chronic inflammatory skin disorders are frequently associated with impaired skin barrier function. Selective phosphodiesterase-4 (PDE4) inhibition constitutes an effective therapeutic strategy for the treatment of inflammatory skin diseases. We now report the pharmacological anti-inflammatory profile of DRM02, a novel pyrazolylbenzothiazole derivative with selective in vitro inhibitory activity toward PDE4 isoforms A, B and D. DRM02 treatment of cultured primary human and mouse epidermal keratinocytes interfered with pro-inflammatory cytokine production elicited by interleukin-1α and tumor necrosis factor-α. Similarly, DRM02 inhibited the production of pro-inflammatory cytokines by human peripheral blood mononuclear cells ex vivo and cultured THP-1 monocyte-like cells, with IC50 values of 0.6-14 µM. These anti-inflammatory properties of DRM02 were associated with dose-dependent repression of nuclear factor-κB (NF-κB) transcriptional activity. In skin inflammation in vivo mouse models, topically applied DRM02 inhibited the acute response to phorbol ester and induced Th2-type contact hypersensitivity reactivity. Further, DRM02 also decreased cutaneous clinical changes and expression of Th17 immune pathway cytokines in a mouse model of psoriasis evoked by repeated topical imiquimod application. Thus, the overall pharmacological profiling of the PDE4 inhibitor DRM02 has revealed its potential as a topical therapy for inflammatory skin disorders and restoration of skin homeostasis.
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Affiliation(s)
| | - Iordanka A Ivanova
- Department of Physiology and Pharmacology, University of Western Ontario , London, Canada
| | - Lina Dagnino
- Department of Physiology and Pharmacology, University of Western Ontario , London, Canada.,Department of Oncology, University of Western Ontario , London, Canada
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64
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Mirlekar B, Michaud D, Lee SJ, Kren NP, Harris C, Greene K, Goldman EC, Gupta GP, Fields RC, Hawkins WG, DeNardo DG, Rashid NU, Yeh JJ, McRee AJ, Vincent BG, Vignali DAA, Pylayeva-Gupta Y. B cell-Derived IL35 Drives STAT3-Dependent CD8 + T-cell Exclusion in Pancreatic Cancer. Cancer Immunol Res 2020; 8:292-308. [PMID: 32024640 PMCID: PMC7056532 DOI: 10.1158/2326-6066.cir-19-0349] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 09/13/2019] [Accepted: 12/09/2019] [Indexed: 02/07/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDA) is an aggressive malignancy characterized by a paucity of tumor-proximal CD8+ T cells and resistance to immunotherapeutic interventions. Cancer-associated mechanisms that elicit CD8+ T-cell exclusion and resistance to immunotherapy are not well-known. Here, using a Kras- and p53-driven model of PDA, we describe a mechanism of action for the protumorigenic cytokine IL35 through STAT3 activation in CD8+ T cells. Distinct from its action on CD4+ T cells, IL35 signaling in gp130+CD8+ T cells activated the transcription factor STAT3, which antagonized intratumoral infiltration and effector function of CD8+ T cells via suppression of CXCR3, CCR5, and IFNγ expression. Inhibition of STAT3 signaling in tumor-educated CD8+ T cells improved PDA growth control upon adoptive transfer to tumor-bearing mice. We showed that activation of STAT3 in CD8+ T cells was driven by B cell- but not regulatory T cell-specific production of IL35. We also demonstrated that B cell-specific deletion of IL35 facilitated CD8+ T-cell activation independently of effector or regulatory CD4+ T cells and was sufficient to phenocopy therapeutic anti-IL35 blockade in overcoming resistance to anti-PD-1 immunotherapy. Finally, we identified a circulating IL35+ B-cell subset in patients with PDA and demonstrated that the presence of IL35+ cells predicted increased occurrence of phosphorylated (p)Stat3+CXCR3-CD8+ T cells in tumors and inversely correlated with a cytotoxic T-cell signature in patients. Together, these data identified B cell-mediated IL35/gp130/STAT3 signaling as an important direct link to CD8+ T-cell exclusion and immunotherapy resistance in PDA.
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MESH Headings
- Animals
- Apoptosis/immunology
- B-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/immunology
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/immunology
- Carcinoma, Pancreatic Ductal/pathology
- Carcinoma, Pancreatic Ductal/therapy
- Case-Control Studies
- Cell Proliferation/physiology
- Humans
- Immunotherapy, Adoptive/methods
- Interleukins/genetics
- Interleukins/immunology
- Lymphocyte Activation
- Lymphocytes, Tumor-Infiltrating/immunology
- Mice
- Mice, Inbred C57BL
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/immunology
- Pancreatic Neoplasms/pathology
- Pancreatic Neoplasms/therapy
- Receptors, CCR5/genetics
- Receptors, CCR5/immunology
- Receptors, CXCR3/genetics
- Receptors, CXCR3/immunology
- STAT3 Transcription Factor/genetics
- STAT3 Transcription Factor/immunology
- Signal Transduction/immunology
- T-Lymphocytes, Regulatory/immunology
- Tumor Cells, Cultured
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Bhalchandra Mirlekar
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Daniel Michaud
- Department of Cell Biology, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Samuel J Lee
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Nancy P Kren
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Cameron Harris
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Kevin Greene
- Department of Pathology and Laboratory Medicine, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Emily C Goldman
- Department of Radiation Oncology, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Gaorav P Gupta
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
- Department of Radiation Oncology, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Ryan C Fields
- Department of Surgery, Barnes-Jewish Hospital and the Alvin J. Siteman Comprehensive Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - William G Hawkins
- Department of Surgery, Barnes-Jewish Hospital and the Alvin J. Siteman Comprehensive Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - David G DeNardo
- Department of Medicine, Barnes-Jewish Hospital and the Alvin J. Siteman Comprehensive Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Naim U Rashid
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
- Department of Biostatistics, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Jen Jen Yeh
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
- Department of Surgery, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Autumn J McRee
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
- Department of Medicine, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Benjamin G Vincent
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
- Department of Medicine, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
| | - Dario A A Vignali
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yuliya Pylayeva-Gupta
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina.
- Department of Genetics, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina
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65
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Liu Y, Li R, Zhang Y, Qiao S, Chen XX, Zhang G. Porcine reproductive and respiratory syndrome virus up-regulates sialoadhesin via IFN-STAT signaling to facilitate its infection. Microb Pathog 2020; 142:104112. [PMID: 32126255 DOI: 10.1016/j.micpath.2020.104112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/10/2020] [Accepted: 02/28/2020] [Indexed: 11/19/2022]
Abstract
Porcine reproductive and respiratory syndrome (PRRS) has caused huge economic losses to global swine industry. Porcine sialoadhesin (poSn) was previously reported to be a putative receptor for the causative agent, PRRS virus (PRRSV). In the current study, we first observed that PRRSV infection up-regulated expression of poSn in a dose- and time-dependent manner. Subsequently, we found that PRRSV-triggered transcription of type I interferons (IFNs) was involved in poSn up-regulation through the IFN-signal transducer and activator of transcription (STAT) signaling cascade. Interestingly, poSn up-regulation was shown to promote PRRSV infection during post-entry process. Taken together, this work deepens our understanding of PRRSV pathogenesis and provides a novel idea on its establishment of persistent infection, which will be interesting to unravel the detailed mechanisms in the future.
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Affiliation(s)
- Yingqi Liu
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China.
| | - Rui Li
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China.
| | - Yuyang Zhang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China.
| | - Songlin Qiao
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China.
| | - Xin-Xin Chen
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China.
| | - Gaiping Zhang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China; College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, Henan, China.
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66
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Cui SJ, Zhang T, Fu Y, Liu Y, Gan YH, Zhou YH, Yang RL, Wang XD. DPSCs Attenuate Experimental Progressive TMJ Arthritis by Inhibiting the STAT1 Pathway. J Dent Res 2020; 99:446-455. [PMID: 31977264 DOI: 10.1177/0022034520901710] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Severe inflammation, progressive cartilage, and bone destruction are typical pathologic changes in temporomandibular joint (TMJ) arthritis and lead to great difficulty for treatment. However, current therapy is inefficient to improve degenerative changes in progressive TMJ arthritis. This study investigated the therapeutic effects of human dental pulp stem cells (DPSCs) on severe inflammatory TMJ diseases. Progressive TMJ arthritis in rats was induced by intra-articular injection of complete Freund's adjuvant and monosodium iodoacetate. DPSCs were injected into the articular cavity to treat rat TMJ arthritis, with normal saline injection as control. Measurement of head withdrawal threshold, micro-computed tomography scanning, and histologic staining were applied to evaluate the severity of TMJ arthritis. Results showed that local injection of DPSCs in rats with TMJ arthritis relieved hyperalgesia and synovial inflammation, attenuated cartilage matrix degradation, and induced bone regeneration. Inflammatory factors TNF-α and IFN-γ were elevated in progressive TMJ arthritis and partially decreased by local injection of DPSCs. MMP3 and MMP13 were elevated in the arthritis + normal saline group and decreased in the arthritis + DPSCs group, which indicated amelioration of matrix degradation. The isolated primary synoviocytes were cocultured with DPSCs after inflammatory factors stimulated to explore the possible biological mechanisms. The expression of MMP3 and MMP13 in synoviocytes was elevated after TNF-α and IFN-γ stimulation and partially reversed by DPSC treatment in the in vitro study. The signal transducer and activator of transcription 1 (STAT1) was activated by inflammatory stimulation and suppressed by DPSC coculture. The upregulation of MMP3 and MMP13 triggered by inflammation was blocked by STAT1-specific inhibitor, suggesting that STAT1 regulated the expression of MMP3 and MMP13. In conclusion, this study demonstrated the possible therapeutic effects of local injection of DPSCs on progressive TMJ arthritis by inhibiting the expression of MMP3 and MMP13 through the STAT1 pathway.
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Affiliation(s)
- S J Cui
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - T Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Y Fu
- National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China.,Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Y H Gan
- National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China.,Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y H Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - R L Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - X D Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.,National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China.,Beijing Key Laboratory of Digital Stomatology, Beijing, China
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67
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Nafar M, Kalantari S, Samavat S, Omrani MD, Arsang-Jang S, Taheri M, Ghafouri-Fard S. Downregulation of Protein Inhibitor of Activated STAT (PIAS) 1 Is Possibly Involved in the Process of Allograft Rejection. Transplant Proc 2019; 52:414-418. [PMID: 31870601 DOI: 10.1016/j.transproceed.2019.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 10/11/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Protein inhibitors of activated STAT (PIAS) proteins are regarded as negative regulators of cytokine-signaling and potent immunosuppressive proteins. However, their role in the process of organ transplant rejection has not been elucidated. METHODS In the current study, we compared transcript levels of PIAS1 to 4 in the peripheral blood of renal transplant recipients who experienced transplant rejection with those having normal transplant functions. Expression of PIAS1 was significantly higher in nonrejected group compared with the rejected group among male recipients; however, differences were insignificant among female recipients. Expressions of other PIAS genes were not different between study groups. Significant pairwise correlations were found between expression levels of PIAS genes in all study subgroups. The current investigation highlights the role of PIAS1 downregulation in the evolution of graft rejection and potentiates this gene as a predictive marker for transplant fate.
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Affiliation(s)
- Mohsen Nafar
- Chronic Kidney Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shiva Kalantari
- Chronic Kidney Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shiva Samavat
- Chronic Kidney Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mir Davood Omrani
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahram Arsang-Jang
- Clinical Research Development Center (CRDU), Qom University of Medical Sciences, Qom, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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68
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Madduri D, Dhodapkar MV, Lonial S, Jagannath S, Cho HJ. SOHO State of the Art Updates and Next Questions: T-Cell–Directed Immune Therapies for Multiple Myeloma: Chimeric Antigen Receptor–Modified T Cells and Bispecific T-Cell–Engaging Agents. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2019; 19:537-544. [DOI: 10.1016/j.clml.2019.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/02/2019] [Indexed: 02/07/2023]
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69
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p-STAT1 regulates the influenza A virus replication and inflammatory response in vitro and vivo. Virology 2019; 537:110-120. [PMID: 31493649 DOI: 10.1016/j.virol.2019.08.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 11/22/2022]
Abstract
Influenza A virus infection activates various intracellular signaling pathways, which is mediated by the transcription factors. Here, a quantitative phosphoproteomic analysis of A549 cells after infection with influenza A virus (H5N1) was performed and we found that the transcription factor STAT1 was highly activated. Unexpectedly, upon inhibition of p-STAT1, titers of progeny virus and viral protein synthesis were both reduced. The STAT1 inhibitor Fludarabine (FLUD) inhibited an early progeny step in viral infection and reduced the levels of influenza virus genomic RNA (vRNA). Concomitantly, there was reduced expression of inflammatory cytokines in p-STAT1 inhibited cells. In vivo, suppression of p-STAT1 improved the survival of H5N1 virus-infected mice, reduced the pulmonary inflammatory response and viral burden. Thus, our data demonstrated a critical role for p-STAT1 in influenza virus replication and inflammatory responses. We speculate that STAT1 is an example of a putative antiviral signaling component to support effective replication.
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70
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Tang X, Yang S, Sheng X, Xing J, Zhan W. Transcriptome Analysis of Immune Response of mIgM + B Lymphocytes in Japanese Flounder ( Paralichthys olivaceus) to Lactococcus lactis in vitro Revealed That IFN I-3 Could Enhance Their Phagocytosis. Front Immunol 2019; 10:1622. [PMID: 31379827 PMCID: PMC6646603 DOI: 10.3389/fimmu.2019.01622] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 06/28/2019] [Indexed: 12/12/2022] Open
Abstract
B cells have recently been proven to have phagocytic activities, but few studies have explored the relevant regulation mechanisms. In this study, we showed that the Japanese flounder (Paralichthys olivaceus) membrane-bound (m)IgM+ B lymphocyte population could phagocytose inactivated Lactococcus lactis with a mean phagocytic rate of 25%. High-purity mIgM+ B lymphocytes were subsequently sorted to investigate the cellular response to L. lactis stimulation in vitro. Transcriptome analysis identified 1,375 differentially expressed genes (DEGs) after L. lactis stimulation, including 975 upregulated and 400 downregulated genes. Many of these DEGs were enriched in multiple pathways associated with phagocytosis such as focal adhesion, the phagosome, and actin cytoskeleton regulation. Moreover, many genes involved in phagolysosomal function and antigen presentation were also upregulated after stimulation, indicating that mIgM+ B lymphocytes may degrade the internalized bacteria and present processed antigenic peptides to other immune cells. Interestingly, the type I interferon 3 (IFN I-3) gene was upregulated after L. lactis stimulation, and further analysis showed that the recombinant (r)IFN I-3 significantly enhanced phagocytosis of L. lactis and Edwardsiella tarda by mIgM+ B lymphocytes. In addition, significantly higher intracellular reactive oxygen species (ROS) levels were detected in mIgM+ B lymphocytes following rIFN I-3 treatment. We also found that IFN I-3 significantly upregulated Stat1 expression in mIgM+ B lymphocytes, and the enhancing effect of IFN I-3 on mIgM+ B lymphocyte-mediated phagocytosis was suppressed by fludarabine treatment. Collectively, these results demonstrate that mIgM+ B cell-mediated phagocytosis in the Japanese flounder is effectively triggered by bacterial stimulation, and further enhanced by IFN I-3, which itself may be regulated by Stat1.
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Affiliation(s)
- Xiaoqian Tang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Shun Yang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
| | - Xiuzhen Sheng
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
| | - Jing Xing
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Wenbin Zhan
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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71
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Activation of the STING-Dependent Type I Interferon Response Reduces Microglial Reactivity and Neuroinflammation. Neuron 2019; 96:1290-1302.e6. [PMID: 29268096 DOI: 10.1016/j.neuron.2017.11.032] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 09/29/2017] [Accepted: 11/17/2017] [Indexed: 01/07/2023]
Abstract
Brain aging and neurodegeneration are associated with prominent microglial reactivity and activation of innate immune response pathways, commonly referred to as neuroinflammation. One such pathway, the type I interferon response, recognizes viral or mitochondrial DNA in the cytoplasm via activation of the recently discovered cyclic dinucleotide synthetase cGAS and the cyclic dinucleotide receptor STING. Here we show that the FDA-approved antiviral drug ganciclovir (GCV) induces a type I interferon response independent of its canonical thymidine kinase target. Inhibition of components of the STING pathway, including STING, IRF3, Tbk1, extracellular IFNβ, and the Jak-Stat pathway resulted in reduced activity of GCV and its derivatives. Importantly, functional STING was necessary for GCV to inhibit inflammation in cultured myeloid cells and in a mouse model of multiple sclerosis. Collectively, our findings uncover an unexpected new activity of GCV and identify the STING pathway as a regulator of microglial reactivity and neuroinflammation.
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72
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Lu C, Klement JD, Ibrahim ML, Xiao W, Redd PS, Nayak-Kapoor A, Zhou G, Liu K. Type I interferon suppresses tumor growth through activating the STAT3-granzyme B pathway in tumor-infiltrating cytotoxic T lymphocytes. J Immunother Cancer 2019; 7:157. [PMID: 31228946 PMCID: PMC6589175 DOI: 10.1186/s40425-019-0635-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 06/11/2019] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Type I interferons (IFN-I) have recently emerged as key regulators of tumor response to chemotherapy and immunotherapy. However, IFN-I function in cytotoxic T lymphocytes (CTLs) in the tumor microenvironment is largely unknown. METHODS Tumor tissues and CTLs of human colorectal cancer patients were analyzed for interferon (alpha and beta) receptor 1 (IFNAR1) expression. IFNAR1 knock out (IFNAR-KO), mixed wild type (WT) and IFNAR1-KO bone marrow chimera mice, and mice with IFNAR1 deficiency only in T cells (IFNAR1-TKO) were used to determine IFN-I function in T cells in tumor suppression. IFN-I target genes in tumor-infiltrating and antigen-specific CTLs were identified and functionally analyzed. RESULTS IFNAR1 expression level is significantly lower in human colorectal carcinoma tissue than in normal colon tissue. IFNAR1 protein is also significantly lower on CTLs from colorectal cancer patients than those from healthy donors. Although IFNAR1-KO mice exhibited increased susceptibility to methylcholanthrene-induced sarcoma, IFNAR1-sufficient tumors also grow significantly faster in IFNAR1-KO mice and in mice with IFNAR1 deficiency only in T cells (IFNAR1-TKO), suggesting that IFN-I functions in T cells to enhance host cancer immunosurveillance. Strikingly, tumor-infiltrating CTL levels are similar between tumor-bearing WT and IFNAR1-KO mice. Competitive reconstitution of mixed WT and IFNAR1-KO bone marrow chimera mice further determined that IFNAR1-deficient naïve CTLs exhibit no deficiency in response to vaccination to generate antigen-specific CTLs as compared to WT CTLs. Gene expression profiling determined that Gzmb expression is down-regulated in tumor-infiltrating CTLs of IFNAR1-KO mice as compared to WT mice, and in antigen-specific IFNAR1-KO CTLs as compared to WT CTLs in vivo. Mechanistically, we determined that IFN-I activates STAT3 that binds to the Gzmb promoter to activate Gzmb transcription in CTLs. CONCLUSION IFN-I induces STAT3 activation to activate Gzmb expression to enhance CTL effector function to suppress tumor development. Human colorectal carcinoma may use down-regulation of IFNAR1 on CTLs to suppress CTL effector function to evade host cancer immunosurveillance.
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Affiliation(s)
- Chunwan Lu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, 30912, USA.
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA.
- Charlie Norwood VA Medical Center, Augusta, GA, 30904, USA.
| | - John D Klement
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, 30912, USA
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA
- Charlie Norwood VA Medical Center, Augusta, GA, 30904, USA
| | - Mohammed L Ibrahim
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, 30912, USA
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA
- Charlie Norwood VA Medical Center, Augusta, GA, 30904, USA
| | - Wei Xiao
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, 30912, USA
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA
| | - Priscilla S Redd
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, 30912, USA
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA
- Charlie Norwood VA Medical Center, Augusta, GA, 30904, USA
| | - Asha Nayak-Kapoor
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA
| | - Gang Zhou
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, 30912, USA.
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, 30912, USA.
- Charlie Norwood VA Medical Center, Augusta, GA, 30904, USA.
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73
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Meng G, Fei Z, Fang M, Li B, Chen A, Xu C, Xia M, Yu D, Wei J. Fludarabine as an Adjuvant Improves Newcastle Disease Virus-Mediated Antitumor Immunity in Hepatocellular Carcinoma. MOLECULAR THERAPY-ONCOLYTICS 2019; 13:22-34. [PMID: 31011625 PMCID: PMC6461577 DOI: 10.1016/j.omto.2019.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 03/21/2019] [Indexed: 12/15/2022]
Abstract
In addition to direct oncolysis, oncolytic viruses (OVs) also induce antitumor immunity, also called viro-immunotherapy. Limited viral replication and immune-negative feedback are the major hurdles to effective viro-immunotherapy. In this study, we found that use of an adjuvant of fludarabine, a chemotherapeutic drug for chronic myeloid leukemia, increased the replication of Newcastle disease virus (NDV) by targeting signal transducer and activator of transcription 1 (STAT1), which led to enhanced oncolysis of hepatocellular carcinoma (HCC) cells. Moreover, fludarabine accelerated ubiquitin-proteasomal degradation by enhancing ubiquitylation rather than proteasomal activity. This resulted in accelerated degradation of phosphorylated STAT3 and indoleamine 2, 3-dioxygenase 1 (IDO1), whose expression was induced by NDV infection. In addition, fludarabine significantly increased the NDV-induced infiltration of NK cells and decreased the number of NDV-induced myeloid-derived suppressor cells (MDSCs) in the tumor microenvironment. The aforementioned effects of fludarabine significantly improved NDV-mediated antitumor immunity and prolonged survival in mouse model of HCC. Our findings indicate the utility of fludarabine as an adjuvant for oncolytic anticancer viro-immunotherapy.
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Affiliation(s)
- Gang Meng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China.,Department of Hepatobiliary Surgery, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Ziwei Fei
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
| | - Mingyue Fang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
| | - Binghua Li
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China.,Department of Hepatobiliary Surgery, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Anxian Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
| | - Chun Xu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China.,Department of Pathology and Pathophysiology, Medical School, Southeast University, Nanjing 210009, China
| | - Mao Xia
- Department of Clinical Laboratory, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Decai Yu
- Department of Hepatobiliary Surgery, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Jiwu Wei
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
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74
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Disson O, Blériot C, Jacob JM, Serafini N, Dulauroy S, Jouvion G, Fevre C, Gessain G, Thouvenot P, Eberl G, Di Santo JP, Peduto L, Lecuit M. Peyer's patch myeloid cells infection by Listeria signals through gp38 + stromal cells and locks intestinal villus invasion. J Exp Med 2018; 215:2936-2954. [PMID: 30355616 PMCID: PMC6219733 DOI: 10.1084/jem.20181210] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/05/2018] [Accepted: 09/28/2018] [Indexed: 12/12/2022] Open
Abstract
The foodborne pathogen Listeria monocytogenes (Lm) crosses the intestinal villus epithelium via goblet cells (GCs) upon the interaction of Lm surface protein InlA with its receptor E-cadherin. Here, we show that Lm infection accelerates intestinal villus epithelium renewal while decreasing the number of GCs expressing luminally accessible E-cadherin, thereby locking Lm portal of entry. This novel innate immune response to an enteropathogen is triggered by the infection of Peyer's patch CX3CR1+ cells and the ensuing production of IL-23. It requires STAT3 phosphorylation in epithelial cells in response to IL-22 and IL-11 expressed by lamina propria gp38+ stromal cells. Lm-induced IFN-γ signaling and STAT1 phosphorylation in epithelial cells is also critical for Lm-associated intestinal epithelium response. GC depletion also leads to a decrease in colon mucus barrier thickness, thereby increasing host susceptibility to colitis. This study unveils a novel innate immune response to an enteropathogen, which implicates gp38+ stromal cells and locks intestinal villus invasion, but favors colitis.
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Affiliation(s)
- Olivier Disson
- Institut Pasteur, Biology of Infection Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1117, Paris, France
| | - Camille Blériot
- Institut Pasteur, Biology of Infection Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1117, Paris, France
| | - Jean-Marie Jacob
- Institut Pasteur, Stroma, Inflammation and Tissue Repair Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1224, Paris, France
| | - Nicolas Serafini
- Institut Pasteur, Innate Immunity Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1223, Paris, France
| | - Sophie Dulauroy
- Institut National de la Santé et de la Recherche Médicale U1224, Paris, France.,Institut Pasteur, Microenvironnement and Immunity Unit, Paris, France
| | - Grégory Jouvion
- Institut Pasteur, Human Histopathology and Animal Models Unit, Paris, France
| | - Cindy Fevre
- Institut Pasteur, Biology of Infection Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1117, Paris, France
| | - Grégoire Gessain
- Institut Pasteur, Biology of Infection Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1117, Paris, France
| | - Pierre Thouvenot
- Institut Pasteur, Biology of Infection Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1117, Paris, France
| | - Gérard Eberl
- Institut National de la Santé et de la Recherche Médicale U1224, Paris, France.,Institut Pasteur, Microenvironnement and Immunity Unit, Paris, France
| | - James P Di Santo
- Institut Pasteur, Innate Immunity Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1223, Paris, France
| | - Lucie Peduto
- Institut Pasteur, Stroma, Inflammation and Tissue Repair Unit, Paris, France.,Institut National de la Santé et de la Recherche Médicale U1224, Paris, France
| | - Marc Lecuit
- Institut Pasteur, Biology of Infection Unit, Paris, France .,Institut National de la Santé et de la Recherche Médicale U1117, Paris, France.,Paris Descartes University, Department of Infectious Diseases and Tropical Medicine, Necker-Enfants Malades University Hospital, APHP, Institut Imagine, Paris, France
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75
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Bruni D, Dignam A, Dunne S, Wall-Coughlan D, McCrudden A, O’Connell K, Lyons C, McGuigan C, Tubridy N, Butler MP. IRAK1 Limits TLR3/4- and IFNAR-Driven IL-27 Production through a STAT1-Dependent Mechanism. THE JOURNAL OF IMMUNOLOGY 2018; 201:2070-2081. [DOI: 10.4049/jimmunol.1701373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 07/25/2018] [Indexed: 11/19/2022]
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76
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Bousoik E, Montazeri Aliabadi H. "Do We Know Jack" About JAK? A Closer Look at JAK/STAT Signaling Pathway. Front Oncol 2018; 8:287. [PMID: 30109213 PMCID: PMC6079274 DOI: 10.3389/fonc.2018.00287] [Citation(s) in RCA: 237] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 07/09/2018] [Indexed: 12/14/2022] Open
Abstract
Janus tyrosine kinase (JAK) family of proteins have been identified as crucial proteins in signal transduction initiated by a wide range of membrane receptors. Among the proteins in this family JAK2 has been associated with important downstream proteins, including signal transducers and activators of transcription (STATs), which in turn regulate the expression of a variety of proteins involved in induction or prevention of apoptosis. Therefore, the JAK/STAT signaling axis plays a major role in the proliferation and survival of different cancer cells, and may even be involved in resistance mechanisms against molecularly targeted drugs. Despite extensive research focused on the protein structure and mechanisms of activation of JAKs, and signal transduction through these proteins, their importance in cancer initiation and progression seem to be underestimated. This manuscript is an attempt to highlight the role of JAK proteins in cancer biology, the most recent developments in targeting JAKs, and the central role they play in intracellular cross-talks with other signaling cascades.
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Affiliation(s)
- Emira Bousoik
- Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery, School of Pharmacy, Chapman University, Irvine, CA, United States.,School of Pharmacy, Omar Al-Mukhtar University, Dèrna, Libya
| | - Hamidreza Montazeri Aliabadi
- Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery, School of Pharmacy, Chapman University, Irvine, CA, United States
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77
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Peng M, Wang Y, Qiang L, Xu Y, Li C, Li T, Zhou X, Xiao M, Wang J. Interleukin-35 Inhibits TNF-α-Induced Osteoclastogenesis and Promotes Apoptosis via Shifting the Activation From TNF Receptor-Associated Death Domain (TRADD)-TRAF2 to TRADD-Fas-Associated Death Domain by JAK1/STAT1. Front Immunol 2018; 9:1417. [PMID: 30061878 PMCID: PMC6054960 DOI: 10.3389/fimmu.2018.01417] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 06/06/2018] [Indexed: 12/27/2022] Open
Abstract
Over-activated osteoclasts derived from myeloid or peripheral blood monocytes by inflammatory cytokines results in osteoporosis, osteoarthritis, and other bone erosion-related diseases. Interleukin 35 (IL-35) is a novel anti-inflammatory and immunosuppressive factor. This study investigated the effect of IL-35 on TNF-α-induced osteoclastogenesis. In the presence of IL-35, this process was detected by Tartrate-Resistant Acid Phosphatase (TRAP) staining, F-actin staining, and bone resorption assays. The effects of IL-35 on TNF-α-induced apoptosis were demonstrated by TUNEL staining, cell viability assays, and flow cytometry. Moreover, a microarray was performed to detect the effect of IL-35 on TNF-α-activated phosphatase kinase. The effect of IL-35 on the TNF-α-mediated activation of NF-κB, MAPK, TRAF2, RIP1, Fas-associated death domain (FADD), and caspase3 was further investigated. In addition, a murine calvarial osteolysis model was established via the subcutaneous injection of TNF-α onto the calvaria, and histological analysis was subsequently performed. As a result, IL-35 inhibited TNF-α-induced osteoclast formation and bone resorption in vitro and osteolysis calvaria in vivo. NFATc1, c-fos, and TRAP were downregulated by IL-35 through the inhibition of NF-κB and MAPK, during which JAK1/STAT1 was activated. Moreover, based on TUNEL staining and flow cytometry, IL-35 was shown to enhance TNF-α-induced osteoclast apoptosis. Meanwhile, FADD and cleaved-caspase 3 were increased in cells treated with TNF-α and IL-35, whereas the DNA-binding activity of NF-κB was increased in TNF-α-treated cells, but was decreased in cells treated with both TNF-α and IL-35. In conclusion, IL-35 inhibits TNF-α-induced osteoclastogenesis and promotes apoptosis by activating JAK1/STAT1 and shifting activation from TNF receptor-associated death domain (TRADD)-TRAF2/RIP1-NF-κB to TRADD-FADD-caspase 3 signaling.
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Affiliation(s)
- Mingzheng Peng
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanguo Wang
- Department of Orthopedic-Spine Surgery, Binzhou Central Hospital, Binzhou Medical College, Binzhou, China
| | - Lei Qiang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
- Southwest Jiaotong University College of Medicine, Chengdu, China
| | - Yan Xu
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
- Southwest Jiaotong University College of Medicine, Chengdu, China
| | - Cuidi Li
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Tao Li
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaojun Zhou
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ming Xiao
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinwu Wang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Pievani A, Michelozzi IM, Rambaldi B, Granata V, Corsi A, Dazzi F, Biondi A, Serafini M. Fludarabine as a cost-effective adjuvant to enhance engraftment of human normal and malignant hematopoiesis in immunodeficient mice. Sci Rep 2018; 8:9125. [PMID: 29904072 PMCID: PMC6002385 DOI: 10.1038/s41598-018-27425-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 05/31/2018] [Indexed: 11/18/2022] Open
Abstract
There is still an unmet need for xenotransplantation models that efficiently recapitulate normal and malignant human hematopoiesis. Indeed, there are a number of strategies to generate humanized mice and specific protocols, including techniques to optimize the cytokine environment of recipient mice and drug alternatives or complementary to the standard conditioning regimens, that can be significantly modulated. Unfortunately, the high costs related to the use of sophisticated mouse models may limit the application of these models to studies that require an extensive experimental design. Here, using an affordable and convenient method, we demonstrate that the administration of fludarabine (FludaraTM) promotes the extensive and rapid engraftment of human normal hematopoiesis in immunodeficient mice. Quantification of human CD45+ cells in bone marrow revealed approximately a 102-fold increase in mice conditioned with irradiation plus fludarabine. Engrafted cells in the bone marrow included hematopoietic stem cells, as well as myeloid and lymphoid cells. Moreover, this model proved to be sufficient for robust reconstitution of malignant myeloid hematopoiesis, permitting primary acute myeloid leukemia cells to engraft as early as 8 weeks after the transplant. Overall, these results present a novel and affordable model for engraftment of human normal and malignant hematopoiesis in immunodeficient mice.
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Affiliation(s)
- A Pievani
- M. Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Monza, 20900, Italy.,Department of Haemato-Oncology, Rayne Institute, King's College London, London, SE59NU, UK
| | - I M Michelozzi
- M. Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Monza, 20900, Italy
| | - B Rambaldi
- M. Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Monza, 20900, Italy
| | - V Granata
- M. Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Monza, 20900, Italy
| | - A Corsi
- Department of Molecular Medicine, Sapienza University of Rome, Rome, 00161, Italy
| | - F Dazzi
- Department of Haemato-Oncology, Rayne Institute, King's College London, London, SE59NU, UK
| | - A Biondi
- M. Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Monza, 20900, Italy
| | - M Serafini
- M. Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Monza, 20900, Italy.
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79
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Sasidharan Nair V, Toor SM, Ali BR, Elkord E. Dual inhibition of STAT1 and STAT3 activation downregulates expression of PD-L1 in human breast cancer cells. Expert Opin Ther Targets 2018; 22:547-557. [PMID: 29702007 DOI: 10.1080/14728222.2018.1471137] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Breast cancer is the most commonly diagnosed cancer, and it is a leading cause of cancer-related deaths in females worldwide. Triple-negative breast cancer (TNBC) constitutes 15% of breast cancer and shows distinct metastasis profiles with poor prognosis. Strong PD-L1 expression has been observed in some tumors, supporting their escape from immune surveillance. Targeting PD-L1 could be a promising therapeutic approach in breast cancer patients. We investigated potential molecular mechanisms for constitutive expression of PD-L1 by inhibiting upstream STAT1 and STAT3 signals. METHODS PD-L1 expression in three breast cancer cell lines was measured using quantitative PCR and western blotting. Activation of STAT1 and STAT3 was blocked using pharmacological inhibitors and siRNA. The mechanism underlying the constitutive expression of PD-L1 was investigated using ChIP and co-immunoprecipitation assays. RESULTS We found that individual inhibition of STAT1 and STAT3 activation partially downregulated PD-L1, while combined inhibition completely downregulated PD-L1 expression. Moreover, our results suggest that pSTAT1-pSTAT3 dimerize in cytosol and translocate to the nucleus, where they bind to PD-L1 promoter and induce PD-L1 expression. CONCLUSION These findings provide a rationale for combined targeting of STAT1 and STAT3 for the development of immune-based cancer therapies for down regulation of PD-L1 expression.
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Affiliation(s)
- Varun Sasidharan Nair
- a Cancer Research Center , Qatar Biomedical Research Institute, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation , Doha , Qatar
| | - Salman M Toor
- a Cancer Research Center , Qatar Biomedical Research Institute, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation , Doha , Qatar
| | - Bassam R Ali
- b College of Medicine and Health Sciences , United Arab Emirates University , Al Ain , United Arab Emirates
| | - Eyad Elkord
- a Cancer Research Center , Qatar Biomedical Research Institute, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation , Doha , Qatar.,c Institute of Cancer Sciences , University of Manchester , Manchester , UK
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80
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Laban H, Weigert A, Zink J, Elgheznawy A, Schürmann C, Günther L, Abdel Malik R, Bothur S, Wingert S, Bremer R, Rieger MA, Brüne B, Brandes RP, Fleming I, Benz PM. VASP regulates leukocyte infiltration, polarization, and vascular repair after ischemia. J Cell Biol 2018; 217:1503-1519. [PMID: 29507126 PMCID: PMC5881493 DOI: 10.1083/jcb.201702048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 07/06/2017] [Accepted: 01/26/2018] [Indexed: 01/14/2023] Open
Abstract
In ischemic vascular diseases, leukocyte recruitment and polarization are crucial for revascularization and tissue repair. The study of Laban et al. provides evidence that VASP is a major regulator of leukocyte recruitment and polarization and vascular repair after ischemia. Mechanistically, the study supports a novel role of VASP in chemokine receptor trafficking. In ischemic vascular diseases, leukocyte recruitment and polarization are crucial for revascularization and tissue repair. We investigated the role of vasodilator-stimulated phosphoprotein (VASP) in vascular repair. After hindlimb ischemia induction, blood flow recovery, angiogenesis, arteriogenesis, and leukocyte infiltration into ischemic muscles in VASP−/− mice were accelerated. VASP deficiency also elevated the polarization of the macrophages through increased signal transducer and activator of transcription (STAT) signaling, which augmented the release of chemokines, cytokines, and growth factors to promote leukocyte recruitment and vascular repair. Importantly, VASP deletion in bone marrow–derived cells was sufficient to mimic the increased blood flow recovery of global VASP−/− mice. In chemotaxis experiments, VASP−/− neutrophils/monocytes were significantly more responsive to M1-related chemokines than wild-type controls. Mechanistically, VASP formed complexes with the chemokine receptor CCR2 and β-arrestin-2, and CCR2 receptor internalization was significantly reduced in VASP−/− leukocytes. Our data indicate that VASP is a major regulator of leukocyte recruitment and polarization in postischemic revascularization and support a novel role of VASP in chemokine receptor trafficking.
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Affiliation(s)
- Hebatullah Laban
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Andreas Weigert
- Institute of Biochemistry I-Pathobiochemistry, Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Joana Zink
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Amro Elgheznawy
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Christoph Schürmann
- German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany.,Institute for Cardiovascular Physiology, Goethe University, Frankfurt am Main, Germany
| | - Lea Günther
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Randa Abdel Malik
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Sabrina Bothur
- LOEWE Center for Cell and Gene Therapy and Department for Medicine, Hematology/Oncology, Goethe University, Frankfurt am Main, Germany
| | - Susanne Wingert
- LOEWE Center for Cell and Gene Therapy and Department for Medicine, Hematology/Oncology, Goethe University, Frankfurt am Main, Germany
| | - Rolf Bremer
- HBB Datenkommunikation and Abrechnungssysteme, Hannover, Germany
| | - Michael A Rieger
- LOEWE Center for Cell and Gene Therapy and Department for Medicine, Hematology/Oncology, Goethe University, Frankfurt am Main, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I-Pathobiochemistry, Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Ralf P Brandes
- German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany.,Institute for Cardiovascular Physiology, Goethe University, Frankfurt am Main, Germany
| | - Ingrid Fleming
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Peter M Benz
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany .,German Centre of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
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81
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Human Cytomegalovirus Utilizes a Nontraditional Signal Transducer and Activator of Transcription 1 Activation Cascade via Signaling through Epidermal Growth Factor Receptor and Integrins To Efficiently Promote the Motility, Differentiation, and Polarization of Infected Monocytes. J Virol 2017; 91:JVI.00622-17. [PMID: 29021395 DOI: 10.1128/jvi.00622-17] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 09/18/2017] [Indexed: 12/12/2022] Open
Abstract
Human cytomegalovirus (HCMV) infects peripheral blood monocytes and triggers biological changes that promote viral dissemination and persistence. We have shown that HCMV induces a proinflammatory state in infected monocytes, resulting in enhanced monocyte motility and transendothelial migration, prolonged monocyte survival, and differentiation toward a long-lived M1-like macrophage phenotype. Our data indicate that HCMV triggers these changes, in the absence of de novo viral gene expression and replication, through engagement and activation of epidermal growth factor receptor (EGFR) and integrins on the surface of monocytes. We previously identified that HCMV induces the upregulation of multiple proinflammatory gene ontologies, with the interferon-associated gene ontology exhibiting the highest percentage of upregulated genes. However, the function of the HCMV-induced interferon (IFN)-stimulated genes (ISGs) in infected monocytes remained unclear. We now show that HCMV induces the enhanced expression and activation of a key ISG transcriptional regulator, signal transducer and activator of transcription (STAT1), via an IFN-independent but EGFR- and integrin-dependent signaling pathway. Furthermore, we identified a biphasic activation of STAT1 that likely promotes two distinct phases of STAT1-mediated transcriptional activity. Moreover, our data show that STAT1 is required for efficient early HCMV-induced enhanced monocyte motility and later for HCMV-induced monocyte-to-macrophage differentiation and for the regulation of macrophage polarization, suggesting that STAT1 may serve as a molecular convergence point linking the biological changes that occur at early and later times postinfection. Taken together, our results suggest that HCMV reroutes the biphasic activation of a traditionally antiviral gene product through an EGFR- and integrin-dependent pathway in order to help promote the proviral activation and polarization of infected monocytes.IMPORTANCE HCMV promotes multiple functional changes in infected monocytes that are required for viral spread and persistence, including their enhanced motility and differentiation/polarization toward a proinflammatory M1 macrophage. We now show that HCMV utilizes the traditionally IFN-associated gene product, STAT1, to promote these changes. Our data suggest that HCMV utilizes EGFR- and integrin-dependent (but IFN-independent) signaling pathways to induce STAT1 activation, which may allow the virus to specifically dictate the biological activity of STAT1 during infection. Our data indicate that HCMV utilizes two phases of STAT1 activation, which we argue molecularly links the biological changes that occur following initial binding to those that continue to occur days to weeks following infection. Furthermore, our findings may highlight a unique mechanism for how HCMV avoids the antiviral response during infection by hijacking the function of a critical component of the IFN response pathway.
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82
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Tian C, Sun R, Liu K, Fu L, Liu X, Zhou W, Yang Y, Yang J. Multiplexed Thiol Reactivity Profiling for Target Discovery of Electrophilic Natural Products. Cell Chem Biol 2017; 24:1416-1427.e5. [PMID: 28988947 DOI: 10.1016/j.chembiol.2017.08.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/06/2017] [Accepted: 08/30/2017] [Indexed: 02/09/2023]
Abstract
Electrophilic groups, such as Michael acceptors, expoxides, are common motifs in natural products (NPs). Electrophilic NPs can act through covalent modification of cysteinyl thiols on functional proteins, and exhibit potent cytotoxicity and anti-inflammatory/cancer activities. Here we describe a new chemoproteomic strategy, termed multiplexed thiol reactivity profiling (MTRP), and its use in target discovery of electrophilic NPs. We demonstrate the utility of MTRP by identifying cellular targets of gambogic acid, an electrophilic NP that is currently under evaluation in clinical trials as anticancer agent. Moreover, MTRP enables simultaneous comparison of seven structurally diversified α,β-unsaturated γ-lactones, which provides insights into the relative proteomic reactivity and target preference of diverse structural scaffolds coupled to a common electrophilic motif and reveals various potential druggable targets with liganded cysteines. We anticipate that this new method for thiol reactivity profiling in a multiplexed manner will find broad application in redox biology and drug discovery.
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Affiliation(s)
- Caiping Tian
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences - Beijing, Beijing 102206, China
| | - Rui Sun
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences - Beijing, Beijing 102206, China; State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, Center for New Drug Safety Evaluation and Research, China Pharmaceutical University, Nanjing 211198, China
| | - Keke Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences - Beijing, Beijing 102206, China
| | - Ling Fu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences - Beijing, Beijing 102206, China
| | - Xiaoyu Liu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, China
| | - Wanqi Zhou
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, China
| | - Yong Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, Center for New Drug Safety Evaluation and Research, China Pharmaceutical University, Nanjing 211198, China
| | - Jing Yang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences - Beijing, Beijing 102206, China.
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83
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Appelberg KS, Wallet MA, Taylor JP, Cash MN, Sleasman JW, Goodenow MM. HIV-1 Infection Primes Macrophages Through STAT Signaling to Promote Enhanced Inflammation and Viral Replication. AIDS Res Hum Retroviruses 2017; 33:690-702. [PMID: 28142265 DOI: 10.1089/aid.2016.0273] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Macrophages play important roles in HIV-1 pathogenesis as targets for viral replication and mediators of chronic inflammation. Similar to IFNγ-priming, HIV-1 primes macrophages, resulting in hyperresponsiveness to subsequent toll-like receptor (TLR) stimulation and increased inflammatory cytokine production. However, the specific molecular mechanism of HIV-1 priming and whether cells must be productively infected or if uninfected bystander cells also are primed by HIV-1 remains unclear. To explore these questions, human macrophages were primed by IFNγ or infected with HIV-1 before activation by TLR ligands. Transcriptome profiling by microarray revealed a gene expression profile for IFNγ-primed cells that was further modulated by the addition of lipopolysaccharide (LPS). HIV-1 infection elicited a gene expression profile that correlated strongly with the profile induced by IFNγ (r = .679, p = .003). Similar to IFNγ, HIV-1 enhanced TLR ligand-induced tumor necrosis factor (TNF) protein expression and release. Increased TNF production was limited to productively infected cells. Specific signal transducer and activator of transcription (STAT)1 and STAT3 inhibitors suppressed HIV-1-mediated enhancement of TLR-induced TNF expression as well as HIV-1 replication. These findings indicate that viral replication and inflammation are linked through a common IFNγ-like, STAT-dependent pathway and that HIV-1-induced STAT1 and STAT3 signaling are involved in both inflammation and HIV-1 replication. Systemic innate immune activation is a hallmark of active HIV-1 replication. Our study shows that inflammation may develop as a consequence of HIV-1 triggering STAT-IFN pathways to support viral replication.
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Affiliation(s)
- K. Sofia Appelberg
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Mark A. Wallet
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Jared P. Taylor
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Melanie N. Cash
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - John W. Sleasman
- Division of Allergy, Department of Pediatrics, Immunology, and Pulmonary Medicine, School of Medicine, Duke University, Durham, North Carolina
| | - Maureen M. Goodenow
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida
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84
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Pereira de Sousa FL, Chaiwangyen W, Morales-Prieto DM, Ospina-Prieto S, Weber M, Photini SM, Sass N, Daher S, Schleussner E, Markert UR. Involvement of STAT1 in proliferation and invasiveness of trophoblastic cells. Reprod Biol 2017; 17:218-224. [PMID: 28552376 DOI: 10.1016/j.repbio.2017.05.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/20/2017] [Accepted: 05/13/2017] [Indexed: 12/19/2022]
Abstract
Trophoblast proliferation and invasion are controlled by cytokines and growth factors present at the implantation site. Members of the Interleukin-6 (IL-6) family of cytokines trigger their effects through activation of intracellular cascades including the Janus Kinase/Signal Transducer and Activator of Transcription (JAK-STAT) pathway. Functions of several STAT molecules in trophoblast cells have been described, but the role of STAT1 remained unclear. Here, potential functions of STAT1 and its activation by Oncostatin M (OSM) have been investigated in an in vitro model. STAT1 expression and phosphorylation were analyzed in human term placenta tissue by immunohistochemistry. HTR-8/SVneo cells (immortalized human extravillous trophoblast cells) were stimulated with OSM, IL-6, IL-11, Leukemia Inhibitory Factor (LIF) and Granulocyte Macrophage Colony-Stimulating Factor. Expression and phosphorylation of STAT1 were analyzed by Western blotting and immunocytochemistry. Fludarabine and STAT1 siRNA were employed for STAT1 depletion. STAT1 transcriptional activity was evaluated by DNA-binding capacity assay. Cell viability and invasion were assessed by MTS and Matrigel assays, respectively. STAT1 was expressed in villous and extravillous trophoblast cells. Low phosphorylation was detectable exclusively in extravillous trophoblast cells. Only OSM and LIF induced phosphorylation of STAT1 in the in vitro model. Challenge with OSM increased cell invasion but not proliferation. Inhibition of STAT1 by fludarabine treatment or STAT1 siRNA transfection reduced cell viability and invasiveness in presence and absence of OSM. These results indicate the potential involvement of STAT1 in the regulation of trophoblast behavior. Furthermore, STAT 1 functions are more efficiently inhibited by blocking its expression than its phosphorylation.
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Affiliation(s)
- Francisco Lázaro Pereira de Sousa
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany; Department of Obstetrics, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Wittaya Chaiwangyen
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Diana M Morales-Prieto
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany.
| | - Stephanie Ospina-Prieto
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Maja Weber
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Stella M Photini
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Nelson Sass
- Department of Obstetrics, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Silvia Daher
- Department of Obstetrics, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Ekkehard Schleussner
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Udo R Markert
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
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85
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Penafuerte C, Feldhammer M, Mills JR, Vinette V, Pike KA, Hall A, Migon E, Karsenty G, Pelletier J, Zogopoulos G, Tremblay ML. Downregulation of PTP1B and TC-PTP phosphatases potentiate dendritic cell-based immunotherapy through IL-12/IFNγ signaling. Oncoimmunology 2017; 6:e1321185. [PMID: 28680757 PMCID: PMC5486178 DOI: 10.1080/2162402x.2017.1321185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/16/2017] [Accepted: 04/17/2017] [Indexed: 12/28/2022] Open
Abstract
PTP1B and TC-PTP are highly related protein-tyrosine phosphatases (PTPs) that regulate the JAK/STAT signaling cascade essential for cytokine-receptor activation in immune cells. Here, we describe a novel immunotherapy approach whereby monocyte-derived dendritic cell (moDC) function is enhanced by modulating the enzymatic activities of PTP1B and TC-PTP. To downregulate or delete the activity/expression of these PTPs, we generated mice with PTP-specific deletions in the dendritic cell compartment or used PTP1B and TC-PTP specific inhibitor. While total ablation of PTP1B or TC-PTP expression leads to tolerogenic DCs via STAT3 hyperactivation, downregulation of either phosphatase remarkably shifts the balance toward an immunogenic DC phenotype due to hyperactivation of STAT4, STAT1 and Src kinase. The resulting increase in IL-12 and IFNγ production subsequently amplifies the IL-12/STAT4/IFNγ/STAT1/IL-12 positive autocrine loop and enhances the therapeutic potential of mature moDCs in tumor-bearing mice. Furthermore, pharmacological inhibition of both PTPs improves the maturation of defective moDCs derived from pancreatic cancer (PaC) patients. Our study provides a new advance in the use of DC-based cancer immunotherapy that is complementary to current cancer therapeutics.
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Affiliation(s)
| | - Matthew Feldhammer
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - John R Mills
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Valerie Vinette
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Kelly A Pike
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada
| | - Anita Hall
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,McGill University Health Centre-Research Institute, MUHC-RI, Montreal, QC, Canada
| | - Eva Migon
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada
| | | | - Jerry Pelletier
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - George Zogopoulos
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,McGill University Health Centre-Research Institute, MUHC-RI, Montreal, QC, Canada
| | - Michel L Tremblay
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
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86
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Kirkham CL, Aguilar OA, Yu T, Tanaka M, Mesci A, Chu KL, Fine JH, Mossman KL, Bremner R, Allan DSJ, Carlyle JR. Interferon-Dependent Induction of Clr-b during Mouse Cytomegalovirus Infection Protects Bystander Cells from Natural Killer Cells via NKR-P1B-Mediated Inhibition. J Innate Immun 2017; 9:343-358. [PMID: 28288457 DOI: 10.1159/000454926] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/05/2016] [Indexed: 01/17/2023] Open
Abstract
Natural killer (NK) cells are innate lymphocytes that aid in self-nonself discrimination by recognizing cells undergoing pathological alterations. The NKR-P1B inhibitory receptor recognizes Clr-b, a self-encoded marker of cell health downregulated during viral infection. Here, we show that Clr-b loss during mouse cytomegalovirus (MCMV) infection is predicated by a loss of Clr-b (Clec2d) promoter activity and nascent transcripts, driven in part by MCMV ie3 (M122) activity. In contrast, uninfected bystander cells near MCMV-infected fibroblasts reciprocally upregulate Clr-b expression due to paracrine type-I interferon (IFN) signaling. Exposure of fibroblasts to type-I IFN augments Clec2d promoter activity and nascent Clr-b transcripts, dependent upon a cluster of IRF3/7/9 motifs located ∼200 bp upstream of the transcriptional start site. Cells deficient in type-I IFN signaling components revealed IRF9 and STAT1 as key transcription factors involved in Clr-b upregulation. In chromatin immunoprecipitation experiments, the Clec2d IRF cluster recruited STAT2 upon IFN-α exposure, confirming the involvement of ISGF3 (IRF9/STAT1/STAT2) in positively regulating the Clec2d promoter. These findings demonstrate that Clr-b is an IFN-stimulated gene on healthy bystander cells, in addition to a missing-self marker on MCMV-infected cells, and thereby enhances the dynamic range of innate self-nonself discrimination by NK cells.
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Affiliation(s)
- Christina L Kirkham
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, Toronto, ON, Canada
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87
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Zellmer VR, Schnepp PM, Fracci SL, Tan X, Howe EN, Zhang S. Tumor-induced Stromal STAT1 Accelerates Breast Cancer via Deregulating Tissue Homeostasis. Mol Cancer Res 2017; 15:585-597. [PMID: 28108623 DOI: 10.1158/1541-7786.mcr-16-0312] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/13/2016] [Accepted: 01/03/2017] [Indexed: 12/21/2022]
Abstract
The tumor microenvironment (TME), the dynamic tissue space in which the tumor exists, plays a significant role in tumor initiation, and is a key contributor in cancer progression; however, little is known about tumor-induced changes in the adjacent tissue stroma. Herein, tumor-induced changes in the TME were explored at the morphologic and molecular level to further understand cancer progression. Tumor-adjacent mammary glands (TAG) displayed altered branching morphology, expansion of myofibroblasts, and increased mammosphere formation, broadly suggesting a tumor-induced field effect. FACS analysis of TAGs demonstrated an increased number of Lin-CD24+/CD49+ enriched mammary gland stem cells (MaSC), suggesting deregulated tissue homeostasis in TAGs. Comparative transcriptome analysis of TAGs and contralateral control glands coupled with meta-analysis on differentially expressed genes with two breast cancer stromal patient microarray datasets identified shared upregulation of STAT1. Knockdown of STAT1 in cancer-associated fibroblast (CAF) cocultured with human breast cancer cells altered cancer cell proliferation, indicating a role for STAT1 as a stromal contributor of tumorigenesis. Furthermore, depletion of STAT1 in CAFs significantly reduced periductal reactive fibrosis and delayed early breast cancer progression in vivo Finally, cotreatment with fludarabine, a FDA-approved STAT1 activation inhibitor and DNA synthesis inhibitor, in combination with doxorubicin, showed enhanced therapeutic efficacy in treating mouse mammary gland tumors. Taken together, these results demonstrate that stromal STAT1 expression promotes tumor progression and is a potential therapeutic target for breast cancer.Implications: Tumors induce stromal STAT1-dependent cytokine secretion that promotes tumor cell proliferation and can be targeted using clinically-approved inhibitors of STAT1. Mol Cancer Res; 15(5); 585-97. ©2017 AACR.
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Affiliation(s)
- Victoria R Zellmer
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana
| | - Patricia M Schnepp
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana
| | - Sarah L Fracci
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana
| | - Xuejuan Tan
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana
| | - Erin N Howe
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana
| | - Siyuan Zhang
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana.
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana
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88
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Wang J, De Veirman K, De Beule N, Maes K, De Bruyne E, Van Valckenborgh E, Vanderkerken K, Menu E. The bone marrow microenvironment enhances multiple myeloma progression by exosome-mediated activation of myeloid-derived suppressor cells. Oncotarget 2016; 6:43992-4004. [PMID: 26556857 PMCID: PMC4791281 DOI: 10.18632/oncotarget.6083] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/23/2015] [Indexed: 12/29/2022] Open
Abstract
Exosomes, extracellular nanovesicles secreted by various cell types, modulate the bone marrow (BM) microenvironment by regulating angiogenesis, cytokine release, immune response, inflammation, and metastasis. Interactions between bone marrow stromal cells (BMSCs) and multiple myeloma (MM) cells play crucial roles in MM development. We previously reported that BMSC-derived exosomes directly promote MM cell growth, whereas the other possible mechanisms for supporting MM progression by these exosomes are still not clear. Here, we investigated the effect of BMSC-derived exosomes on the MM BM cells with specific emphasis on myeloid-derived suppressor cells (MDSCs). BMSC-derived exosomes were able to be taken up by MM MDSCs and induced their expansion in vitro. Moreover, these exosomes directly induced the survival of MDSCs through activating STAT3 and STAT1 pathways and increasing the anti-apoptotic proteins Bcl-xL and Mcl-1. Inhibition of these pathways blocked the enhancement of MDSC survival. Furthermore, these exosomes increased the nitric oxide release from MM MDSCs and enhanced their suppressive activity on T cells. Taken together, our results demonstrate that BMSC-derived exosomes activate MDSCs in the BM through STAT3 and STAT1 pathways, leading to increased immunosuppression which favors MM progression.
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Affiliation(s)
- Jinheng Wang
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Kim De Veirman
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Nathan De Beule
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Ken Maes
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Elke De Bruyne
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Els Van Valckenborgh
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Karin Vanderkerken
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - Eline Menu
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
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89
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Jung J, Gleave Parson M, Kraft JD, Lyda L, Kobe B, Davis C, Robinson J, Peña MMO, Robinson CM. Elevated interleukin-27 levels in human neonatal macrophages regulate indoleamine dioxygenase in a STAT-1 and STAT-3-dependent manner. Immunology 2016; 149:35-47. [PMID: 27238498 PMCID: PMC4981608 DOI: 10.1111/imm.12625] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 05/24/2016] [Accepted: 05/27/2016] [Indexed: 12/12/2022] Open
Abstract
Microbial infections are a major cause of infant mortality as a result of limitations in immune defences. Interleukin-27 (IL-27) is a heterodimeric cytokine produced primarily by leucocytes and is immunosuppressive toward lymphocytes and leucocytes. Our laboratory demonstrated that human neonatal macrophages express IL-27 more abundantly than adult macrophages. Similarly in mice, IL-27 expression is elevated early in life and maintained through infancy. To determine IL-27-regulated mechanisms that may limit immunity, we evaluated the expression of a number of genes in response to this cytokine in primary human neonatal macrophages. Indoleamine 2,3-dioxygenase (IDO) gene expression was increased dose-responsively by IL-27. We have previously demonstrated inhibition of T-cell proliferation and cytokine production by neonatal macrophage-generated IL-27, and IDO is often implicated in this negative regulation. An increase in IDO protein was demonstrated by immunofluorescence microscopy and was consistent with increased enzyme activity following treatment with IL-27. Inclusion of a soluble receptor to neutralize endogenous IL-27, decreased IDO expression and activity compared with untreated macrophages. In response to IL-27, neonatal macrophages phosphorylate signal transdcuer and activator of transcription 1 (STAT-1) and STAT-3. Both transcription factors are recruited to the IDO regulatory region. STAT-3 dominates during steady-state regulation by lower levels of endogenous IL-27 production. A shift to enhanced STAT-1 recruitment occurs during increased levels of exogenously supplied IL-27. These data suggest an interesting interplay of STAT-1 and STAT-3 to regulate IDO activity and immunosuppression in response to different levels of IL-27 in the microenvironment of the immune response that may further our understanding of this interesting cytokine.
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Affiliation(s)
- Joo‐Yong Jung
- Department of BiologyBriar Cliff UniversitySioux CityIAUSA
| | - Madeline Gleave Parson
- Biomedical Sciences DepartmentWest Virginia School of Osteopathic MedicineLewisburgWVUSA
| | - Jennifer D. Kraft
- Department of Pathology Microbiology and ImmunologyUniversity of South Carolina School of MedicineColumbiaSCUSA
| | - Logan Lyda
- Biomedical Sciences DepartmentWest Virginia School of Osteopathic MedicineLewisburgWVUSA
| | - Brianna Kobe
- Biomedical Sciences DepartmentWest Virginia School of Osteopathic MedicineLewisburgWVUSA
| | - Celestia Davis
- Department of Biological SciencesUniversity of South CarolinaColumbiaSCUSA
- Center for Colon Cancer ResearchUniversity of South CarolinaColumbiaSCUSA
| | - Jembber Robinson
- Department of Pathology Microbiology and ImmunologyUniversity of South Carolina School of MedicineColumbiaSCUSA
| | - Maria Marjorette O. Peña
- Department of Biological SciencesUniversity of South CarolinaColumbiaSCUSA
- Center for Colon Cancer ResearchUniversity of South CarolinaColumbiaSCUSA
| | - Cory M. Robinson
- Biomedical Sciences DepartmentWest Virginia School of Osteopathic MedicineLewisburgWVUSA
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90
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Jones OY, Alexander PJ, Lacson A, Gok F, Feliz A, Marikar Y, Madivi C, Jones JM, Good RA. Effects of fludarabine treatment on murine lupus nephritis. Lupus 2016; 13:912-6. [PMID: 15645745 DOI: 10.1191/0961203304lu2032oa] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BXSB mice, a murine model of systemic lupus erythematosus (SLE), were treated with two different doses of fludarabine for a four-week period and examined two weeks after the final dose. Control mice were treated with saline or cyclophosphamide. Mice treated with fludarabine had a significant reduction in renal pathology compared to control mice. Fludarabine-treated mice also had an almost 10-fold increase in percentile of CD8+CD25+ T cells in the spleen and a smaller but significant increase in CD4+CD25+ cells. Mice treated with cyclophosphamide had a greater leucopenia compared to the other groups and a significant reduction in percentile of B220+ cells in peripheral blood and spleen. Serum autoantibody levels to dsDNA did not differ significantly among the groups, but were higher in 4/10 mice treated with fludarabine. Although few trials of fludarabine for human SLE have been conducted, additional studies may be warranted.
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Affiliation(s)
- O Y Jones
- Department of Pediatrics, University of South Florida All Children's Hospital, St Petersburg, Florida 33701, USA.
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91
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Persistent Alterations in Microglial Enhancers in a Model of Chronic Pain. Cell Rep 2016; 15:1771-81. [DOI: 10.1016/j.celrep.2016.04.063] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/25/2015] [Accepted: 04/17/2016] [Indexed: 12/22/2022] Open
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92
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Sénécal V, Deblois G, Beauseigle D, Schneider R, Brandenburg J, Newcombe J, Moore CS, Prat A, Antel J, Arbour N. Production of IL-27 in multiple sclerosis lesions by astrocytes and myeloid cells: Modulation of local immune responses. Glia 2015; 64:553-69. [PMID: 26649511 DOI: 10.1002/glia.22948] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/20/2015] [Accepted: 11/17/2015] [Indexed: 01/22/2023]
Abstract
The mechanisms whereby human glial cells modulate local immune responses are not fully understood. Interleukin-27 (IL-27), a pleiotropic cytokine, has been shown to dampen the severity of experimental autoimmune encephalomyelitis, but it is still unresolved whether IL-27 plays a role in the human disease multiple sclerosis (MS). IL-27 contribution to local modulation of immune responses in the brain of MS patients was investigated. The expression of IL-27 subunits (EBI3 and p28) and its cognate receptor IL-27R (the gp130 and TCCR chains) was elevated within post-mortem MS brain lesions compared with normal control brains. Moreover, astrocytes (GFAP(+) cells) as well as microglia and macrophages (Iba1(+) cells) were important sources of IL-27. Brain-infiltrating CD4 and CD8 T lymphocytes expressed the IL-27R specific chain (TCCR) implying that these cells could respond to local IL-27 sources. In primary cultures of human astrocytes inflammatory cytokines increased IL-27 production, whereas myeloid cell inflammatory M1 polarization and inflammatory cytokines enhanced IL-27 expression in microglia and macrophages. Astrocytes in postmortem tissues and in vitro expressed IL-27R. Moreover, IL-27 triggered the phosphorylation of the transcription regulator STAT1, but not STAT3 in human astrocytes; indeed IL-27 up-regulated MHC class I expression on astrocytes in a STAT1-dependent manner. These findings demonstrated that IL-27 and its receptor were elevated in MS lesions and that local IL-27 can modulate immune properties of astrocytes and infiltrating immune cells. Thus, therapeutic strategies targeting IL-27 may influence not only peripheral but also local inflammatory responses within the brain of MS patients.
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Affiliation(s)
- Vincent Sénécal
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
| | - Gabrielle Deblois
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
| | - Diane Beauseigle
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
| | - Raphael Schneider
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
| | - Jonas Brandenburg
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
| | - Jia Newcombe
- NeuroResource, UCL Institute of Neurology, University College London, London, WC1N 1PJ, England
| | - Craig S Moore
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada, H3A 2B4
| | - Alexandre Prat
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
| | - Jack Antel
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada, H3A 2B4
| | - Nathalie Arbour
- Department of Neurosciences, Université De Montréal and CRCHUM Montreal, Quebec, Canada, H2X 0A9
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93
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He C, Li H, Viollet B, Zou MH, Xie Z. AMPK Suppresses Vascular Inflammation In Vivo by Inhibiting Signal Transducer and Activator of Transcription-1. Diabetes 2015; 64:4285-97. [PMID: 25858560 PMCID: PMC4657575 DOI: 10.2337/db15-0107] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 03/31/2015] [Indexed: 12/14/2022]
Abstract
Activation of AMPK suppresses inflammation, but the underlying mechanisms remain poorly understood. This study was designed to characterize the molecular mechanisms by which AMPK suppresses vascular inflammation. In cultured human aortic smooth muscle cells, pharmacologic or genetic activation of AMPK inhibited the signal transducer and activator of transcription-1 (STAT1), while inhibition of AMPK had opposite effects. Deletion of AMPKα1 or AMPKα2 resulted in activation of STAT1 and in increases in proinflammatory mediators, both of which were attenuated by administration of STAT1 small interfering RNA or fludarabine, a selective STAT1 inhibitor. Moreover, AMPK activation attenuated the proinflammatory actions induced by STAT1 activators such as interferon-γ and angiotensin II (AngII). Mechanistically, we found that AMPK activation increased, whereas AMPK inhibition decreased, the levels of mitogen-activated protein kinase phosphatase-1 (MKP-1), an inducible nuclear phosphatase, by regulating proteasome-dependent degradation of MKP-1. Gene silencing of MKP-1 increased STAT1 phosphorylation and prevented 5-aminoimidazole-4-carboxyamide ribonucleoside-reduced STAT1 phosphorylation. Finally, we found that infusion of AngII caused a more severe inflammatory response in AMPKα2 knockout mouse aortas, all of which were suppressed by chronic administration of fludarabine. We conclude that AMPK activation suppresses STAT1 signaling and inhibits vascular inflammation through the upregulation of MKP-1.
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MESH Headings
- AMP-Activated Protein Kinases/antagonists & inhibitors
- AMP-Activated Protein Kinases/chemistry
- AMP-Activated Protein Kinases/genetics
- AMP-Activated Protein Kinases/metabolism
- Angiotensin II/adverse effects
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Aorta, Thoracic
- Cells, Cultured
- Dual Specificity Phosphatase 1/antagonists & inhibitors
- Dual Specificity Phosphatase 1/chemistry
- Dual Specificity Phosphatase 1/genetics
- Dual Specificity Phosphatase 1/metabolism
- Enzyme Activation/drug effects
- Humans
- Interferon-gamma/adverse effects
- MAP Kinase Signaling System/drug effects
- Mice, Inbred C57BL
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/immunology
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Phosphorylation/drug effects
- Protein Processing, Post-Translational/drug effects
- RNA Interference
- Random Allocation
- Recombinant Proteins/chemistry
- Recombinant Proteins/metabolism
- STAT1 Transcription Factor/agonists
- STAT1 Transcription Factor/antagonists & inhibitors
- STAT1 Transcription Factor/genetics
- STAT1 Transcription Factor/metabolism
- Vasculitis/chemically induced
- Vasculitis/immunology
- Vasculitis/metabolism
- Vasculitis/pathology
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Affiliation(s)
- Chaoyong He
- Section of Molecular Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Hongliang Li
- Section of Molecular Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Benoit Viollet
- INSERM U1016, Institut Cochin, Paris, France CNRS UMR 8104, Paris, France Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Ming-Hui Zou
- Section of Molecular Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Zhonglin Xie
- Section of Molecular Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK
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94
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Raj U, Kumar H, Gupta S, Varadwaj PK. Exploring dual inhibitors for STAT1 and STAT5 receptors utilizing virtual screening and dynamics simulation validation. J Biomol Struct Dyn 2015; 34:2115-29. [PMID: 26471877 DOI: 10.1080/07391102.2015.1108870] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Signal transducer and activator of transcription (STAT) proteins are latent cytoplasmic transcription factors that transduce signals from cytokines and growth factors to the nucleus and thereby regulate the expression of a variety of target genes. Although mutations of STATs have not been reported in human tumors but the activity of several members of the family, such as STAT1 and STAT5, is deregulated in a variety of human carcinoma. STAT1 and STAT5 share a structural similarity with a highly conserved SH2 domain which is responsible for the activation of STAT proteins on interaction with phosphotyrosine motifs for specific STAT-receptor contacts and STAT dimerization. The purpose of this study is to identify domain-specific dual inhibitors for both STAT1 and STAT5 proteins from a database of natural products and natural product-like compounds comprising of over 90,000 compounds. Virtual screening-based molecular docking was performed in order to find novel natural dual inhibitors. Further, the study was supported by the 50-ns molecular dynamics simulation for receptor-ligand complexes (STAT1-STOCK-1N-69677 and STAT5-STOCK-1N-69677). Analysis of molecular interactions in the SH2 domains of both STAT1 and STAT5 proteins with the ligand revealed few conserved amino acid residues which are responsible to stabilize the ligands within the binding pocket through bonded and non-bonded interactions. This study suggested that compound STOCK-1N-69677 might putatively act as a dual inhibitor of STAT1 and STAT5 receptors, through its binding to the SH2 domain.
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Affiliation(s)
- Utkarsh Raj
- a Department of Bioinformatics , Indian Institute of Information Technology-Allahabad , CC2-4203, Jhalwa Campus, Deoghat, Allahabad , Uttar Pradesh 211012 , India
| | - Himansu Kumar
- a Department of Bioinformatics , Indian Institute of Information Technology-Allahabad , CC2-4203, Jhalwa Campus, Deoghat, Allahabad , Uttar Pradesh 211012 , India
| | - Saurabh Gupta
- a Department of Bioinformatics , Indian Institute of Information Technology-Allahabad , CC2-4203, Jhalwa Campus, Deoghat, Allahabad , Uttar Pradesh 211012 , India
| | - Pritish Kumar Varadwaj
- a Department of Bioinformatics , Indian Institute of Information Technology-Allahabad , CC2-4203, Jhalwa Campus, Deoghat, Allahabad , Uttar Pradesh 211012 , India
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95
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Fred RG, Kappe C, Ameur A, Cen J, Bergsten P, Ravassard P, Scharfmann R, Welsh N. Role of the AMP kinase in cytokine-induced human EndoC-βH1 cell death. Mol Cell Endocrinol 2015. [PMID: 26213325 DOI: 10.1016/j.mce.2015.07.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The aim of the present investigation was to delineate cytokine-induced signaling and death using the EndoC-βH1 cells as a model for primary human beta-cells. The cytokines IL-1β and IFN-γ induced a rapid and transient activation of NF-κB, STAT-1, ERK, JNK and eIF-2α signaling. The EndoC-βH1 cells died rapidly when exposed to IL-1β + IFN-γ, and this occurred also in the presence of the actinomycin D. Inhibition of NF-κB and STAT-1 did not protect against cell death, nor did the cytokines activate iNOS expression. Instead, cytokines promoted a rapid decrease in EndoC-βH1 cell respiration and ATP levels, and we observed protection by the AMPK activator AICAR against cytokine-induced cell death. It is concluded that EndoC-βH1 cell death can be prevented by AMPK activation, which suggests a role for ATP depletion in cytokine-induced human beta-cell death.
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Affiliation(s)
- Rikard G Fred
- Science for Life Laboratory, Department of Medical Cell Biology, Uppsala University, Box 571, SE-751 23 Uppsala, Sweden
| | - Camilla Kappe
- Science for Life Laboratory, Department of Medical Cell Biology, Uppsala University, Box 571, SE-751 23 Uppsala, Sweden
| | - Adam Ameur
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Jing Cen
- Science for Life Laboratory, Department of Medical Cell Biology, Uppsala University, Box 571, SE-751 23 Uppsala, Sweden
| | - Peter Bergsten
- Science for Life Laboratory, Department of Medical Cell Biology, Uppsala University, Box 571, SE-751 23 Uppsala, Sweden
| | - Phillippe Ravassard
- Biotechnology and Biotherapy Laboratory, Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, CHU Pitié-Salpêtrière, Paris, France
| | - Raphael Scharfmann
- INSERM, U1016, Institut Cochin, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris 75014, France
| | - Nils Welsh
- Science for Life Laboratory, Department of Medical Cell Biology, Uppsala University, Box 571, SE-751 23 Uppsala, Sweden.
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96
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Ciaccio MF, Chen VC, Jones RB, Bagheri N. The DIONESUS algorithm provides scalable and accurate reconstruction of dynamic phosphoproteomic networks to reveal new drug targets. Integr Biol (Camb) 2015; 7:776-91. [PMID: 26057728 PMCID: PMC4511116 DOI: 10.1039/c5ib00065c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Many drug candidates fail in clinical trials due to an incomplete understanding of how small-molecule perturbations affect cell phenotype. Cellular responses can be non-intuitive due to systems-level properties such as redundant pathways caused by co-activation of multiple receptor tyrosine kinases. We therefore created a scalable algorithm, DIONESUS, based on partial least squares regression with variable selection to reconstruct a cellular signaling network in a human carcinoma cell line driven by EGFR overexpression. We perturbed the cells with 26 diverse growth factors and/or small molecules chosen to activate or inhibit specific subsets of receptor tyrosine kinases. We then quantified the abundance of 60 phosphosites at four time points using a modified microwestern array, a high-confidence assay of protein abundance and modification. DIONESUS, after being validated using three in silico networks, was applied to connect perturbations, phosphorylation, and cell phenotype from the high-confidence, microwestern dataset. We identified enhancement of STAT1 activity as a potential strategy to treat EGFR-hyperactive cancers and PTEN as a target of the antioxidant, N-acetylcysteine. Quantification of the relationship between drug dosage and cell viability in a panel of triple-negative breast cancer cell lines validated proposed therapeutic strategies.
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Affiliation(s)
- Mark F Ciaccio
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
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97
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Interferon-β1a modulates glutamate neurotransmission in the CNS through CaMKII and GluN2A-containing NMDA receptors. Neuropharmacology 2015; 100:98-105. [PMID: 26116817 DOI: 10.1016/j.neuropharm.2015.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 05/28/2015] [Accepted: 06/17/2015] [Indexed: 12/16/2022]
Abstract
Interferons (IFNs) are widely expressed cytokines with antiviral and immune-modulating effects and have been utilised for the treatment of several human pathological conditions. In particular, the immune-modulatory drug IFN-β is utilized in the treatment of multiple sclerosis (MS), a chronic autoimmune and neurodegenerative disorder of the central nervous system (CNS). Although the effects of IFN-β on immune cells functions have been widely investigated, information about the ability of the drug to modulate neuronal transmission in the CNS is still largely lacking. The aim of this study was to investigate the ability of IFN-β1a to modulate excitatory synaptic transmission in the CNS. Whole cell patch-clamp electrophysiological recordings were performed in the nucleus striatum, one of the CNS grey matter structures that is prone to degenerate during the course of MS. We demonstrate that the drug IFN-β1a, independently from its known peripheral immune-modulating action, is able to directly modulate synaptic transmission. In particular, we demonstrated that IFN-β1a reduces the amplitude of striatal excitatory post-synaptic currents, indicating an inhibitory effect on glutamate neurotransmission, and in particular on its NMDA component. The inhibitory effect of IFN-β1a on striatal glutamate neurotransmission was found to be mediated by a novel post-synaptic mechanism requiring Ca(2+), CaMKII and the GluN2A subunit of the NMDA receptor, without the involvement of the classic STAT1 pathway. The evidence of a novel neuro-modulating effect of IFN-β shed light on the mechanisms of action of the drug and on the complex bidirectional interaction occurring between the immune and the nervous system. This article is part of the Special Issue entitled 'Synaptopathy--from Biology to Therapy'.
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98
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Srivastava RM, Trivedi S, Concha-Benavente F, Hyun-Bae J, Wang L, Seethala RR, Branstetter BF, Ferrone S, Ferris RL. STAT1-Induced HLA Class I Upregulation Enhances Immunogenicity and Clinical Response to Anti-EGFR mAb Cetuximab Therapy in HNC Patients. Cancer Immunol Res 2015; 3:936-45. [PMID: 25972070 DOI: 10.1158/2326-6066.cir-15-0053] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 04/20/2015] [Indexed: 12/14/2022]
Abstract
The goal of this study was to characterize the molecular mechanisms underlying cetuximab-mediated upregulation of HLA class I antigen-processing machinery components in head and neck cancer (HNC) cells and to determine the clinical significance of these changes in cetuximab-treated HNC patients. Flow cytometry, signaling studies, and chromatin immunoprecipitation (ChIP) assays were performed using HNC cells treated with cetuximab alone or with Fcγ receptor (FcγR)-bearing lymphocytes to establish the mechanism of EGFR-dependent regulation of HLA APM expression. A prospective phase II clinical trial of neoadjuvant cetuximab was used to correlate HLA class I expression with clinical response in HNC patients. EGFR blockade triggered STAT1 activation and HLA upregulation, in a src homology-containing protein (SHP)-2-dependent fashion, more prominently in HLA-B/C than in HLA-A alleles. EGFR signaling blockade also enhanced IFNγ receptor 1 (IFNAR) expression, augmenting induction of HLA class I and TAP1/2 expression by IFNγ, which was abrogated in STAT1(-/-) cells. Cetuximab enhanced HNC cell recognition by EGFR853-861-specific CTLs, and notably enhanced surface presentation of a non-EGFR peptide (MAGE-3271-279). HLA class I upregulation was significantly associated with clinical response in cetuximab-treated HNC patients. EGFR induces HLA downregulation through SHP-2/STAT1 suppression. Reversal of HLA class I downregulation was more prominent in clinical responders to cetuximab therapy, supporting an important role for adaptive immunity in cetuximab antitumor activity. Abrogating EGFR-induced immune escape mechanisms and restoring STAT1 signaling to reverse HLA downregulation using cetuximab should be combined with strategies to enhance adaptive cellular immunity.
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Affiliation(s)
| | - Sumita Trivedi
- Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Jie Hyun-Bae
- Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Lin Wang
- Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Raja R Seethala
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Soldano Ferrone
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Robert L Ferris
- Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania. Department of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania. Cancer Immunology Program, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania.
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99
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Fujie A, Funayama A, Miyauchi Y, Sato Y, Kobayashi T, Kanagawa H, Katsuyama E, Hao W, Tando T, Watanabe R, Morita M, Miyamoto K, Kanaji A, Morioka H, Matsumoto M, Toyama Y, Miyamoto T. Bcl6 promotes osteoblastogenesis through Stat1 inhibition. Biochem Biophys Res Commun 2015; 457:451-6. [DOI: 10.1016/j.bbrc.2015.01.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 01/06/2015] [Indexed: 11/17/2022]
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100
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Pasiarski M, Rolinski J, Grywalska E, Stelmach-Goldys A, Korona-Glowniak I, Gozdz S, Hus I, Malm A. Antibody and plasmablast response to 13-valent pneumococcal conjugate vaccine in chronic lymphocytic leukemia patients--preliminary report. PLoS One 2014; 9:e114966. [PMID: 25506837 PMCID: PMC4266633 DOI: 10.1371/journal.pone.0114966] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/17/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Chronic lymphocytic leukemia (CLL) leads to significant immune system dysfunction. The predominant clinical presentation in 50% of patients involves recurrent, often severe, infections. Infections are also the most common (60-80%) cause of deaths in CLL patients. The scope of infections varies with the clinical stage of the disease. Treatment-naive patients typically present with respiratory tract infections caused by encapsulated bacteria Streptococcus pneumoniae and Haemophilus influenzae. Since 2012, the 13-valent pneumococcal conjugate vaccine (PCV13) has been recommended in the United States and some EU countries for pneumococcal infection prevention in patients with CLL (besides the long-standing standard, 23-valent pneumococcal polysaccharide vaccine, PPV23). The aim of this study was to compare the immune response to PCV13 in 24 previously untreated CLL patients and healthy subjects. METHODS Both groups were evaluated for: the levels of specific pneumococcal antibodies, the levels of IgG and IgG subclasses and selected peripheral blood lymphocyte subpopulations including the frequency of plasmablasts before and after immunization. RESULTS Adequate response to vaccination, defined as an at least two-fold increase in specific pneumococcal antibody titers versus pre-vaccination baseline titers, was found in 58.3% of CLL patients and 100% of healthy subjects. Both the CLL group and the control group demonstrated a statistically significant increase in the IgG2 subclass levels following vaccination (P = 0.0301). After vaccination, the frequency of plasmablasts was significantly lower (P<0.0001) in CLL patients in comparison to that in controls. Patients who responded to vaccination had lower clinical stage of CLL as well as higher total IgG, and IgG2 subclass levels. No significant vaccine-related side effects were observed. CONCLUSIONS PCV13 vaccination in CLL patients is safe and induces an effective immune response in a considerable proportion of patients. To achieve an optimal vaccination response, the administration of PCV13 is recommended as soon as possible following CLL diagnosis.
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MESH Headings
- Aged
- Aged, 80 and over
- Antibodies, Bacterial/blood
- Antibodies, Bacterial/immunology
- B-Lymphocytes/immunology
- B-Lymphocytes/pathology
- Female
- Humans
- Immunoglobulin G/blood
- Immunoglobulin G/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/complications
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Male
- Middle Aged
- Pneumococcal Infections/blood
- Pneumococcal Infections/complications
- Pneumococcal Infections/immunology
- Pneumococcal Infections/prevention & control
- Pneumococcal Vaccines/immunology
- Pneumococcal Vaccines/therapeutic use
- Streptococcus pneumoniae/immunology
- Vaccines, Conjugate/immunology
- Vaccines, Conjugate/therapeutic use
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Affiliation(s)
- Marcin Pasiarski
- Department of Hematology, Holycross Cancer Center, Kielce, Poland
| | - Jacek Rolinski
- Department of Clinical Immunology and Immunotherapy, Medical University of Lublin, Lublin, Poland
- St. John’s Cancer Center, Lublin, Poland
| | - Ewelina Grywalska
- Department of Clinical Immunology and Immunotherapy, Medical University of Lublin, Lublin, Poland
- St. John’s Cancer Center, Lublin, Poland
| | | | | | - Stanislaw Gozdz
- Department of Chemotherapy and Clinical Oncology, Holycross Cancer Center, Kielce, Poland
- Faculty of Health Sciences, Jan Kochanowski University, Kielce, Poland
| | - Iwona Hus
- Department of Clinical Transplantology, Medical University of Lublin, Lublin, Poland
| | - Anna Malm
- Department of Pharmaceutical Microbiology, Medical University of Lublin, Lublin, Poland
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