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Shi S, Chen Y, Chu X, Shi P, Wang B, Cai Q, He D, Zhang N, Qin X, Wei W, Zhao Y, Jia Y, Zhang F, Wen Y. Evaluating the associations between intelligence quotient and multi-tissue proteome from the brain, CSF and plasma. Brain Commun 2024; 6:fcae207. [PMID: 38961868 PMCID: PMC11220507 DOI: 10.1093/braincomms/fcae207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 01/16/2024] [Accepted: 06/20/2024] [Indexed: 07/05/2024] Open
Abstract
Intelligence quotient is a vital index to evaluate the ability of an individual to think rationally, learn from experience and deal with the environment effectively. However, limited efforts have been paid to explore the potential associations of intelligence quotient traits with the tissue proteins from the brain, CSF and plasma. The information of protein quantitative trait loci was collected from a recently released genome-wide association study conducted on quantification data of proteins from the tissues including the brain, CSF and plasma. Using the individual-level genotypic data from the UK Biobank cohort, we calculated the polygenic risk scores for each protein based on the protein quantitative trait locus data sets above. Then, Pearson correlation analysis was applied to evaluate the relationships between intelligence quotient traits (including 120 330 subjects for 'fluid intelligence score' and 38 949 subjects for 'maximum digits remembered correctly') and polygenic risk scores of each protein in the brain (17 protein polygenic risk scores), CSF (116 protein polygenic risk scores) and plasma (59 protein polygenic risk scores). The Bonferroni corrected P-value threshold was P < 1.30 × 10-4 (0.05/384). Finally, Mendelian randomization analysis was conducted to test the causal relationships between 'fluid intelligence score' and pre-specific proteins from correlation analysis results. Pearson correlation analysis identified significant association signals between the protein of macrophage-stimulating protein and fluid intelligence in brain and CSF tissues (P brain = 1.21 × 10-8, P CSF = 1.10 × 10-7), as well as between B-cell lymphoma 6 protein and fluid intelligence in CSF (P CSF = 1.23 × 10-4). Other proteins showed close-to-significant associations with the trait of 'fluid intelligence score', such as plasma protease C1 inhibitor (P CSF = 4.19 × 10-4, P plasma = 6.97 × 10-4), and with the trait of 'maximum digits remembered correctly', such as tenascin (P plasma = 3.42 × 10-4). Additionally, Mendelian randomization analysis results suggested that macrophage-stimulating protein (Mendelian randomization-Egger: β = 0.54, P = 1.64 × 10-61 in the brain; β = 0.09, P = 1.60 × 10-12 in CSF) had causal effects on fluid intelligence score. We observed functional relevance of specific tissue proteins to intelligence quotient and identified several candidate proteins, such as macrophage-stimulating protein. This study provided a novel insight to the relationship between tissue proteins and intelligence quotient traits.
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Affiliation(s)
- Sirong Shi
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Yujing Chen
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Xiaoge Chu
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Panxing Shi
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Bingyi Wang
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Qingqing Cai
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Dan He
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Na Zhang
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Xiaoyue Qin
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Wenming Wei
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Yijing Zhao
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Yumeng Jia
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Feng Zhang
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
| | - Yan Wen
- NHC Key Laboratory of Environment and Endemic Diseases, School of Public Health, Health Science Center, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China
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Hunt AL, Khan I, Wu AML, Makohon-Moore SC, Hood BL, Conrads KA, Abulez T, Ogata J, Mitchell D, Gist G, Oliver J, Wei D, Chung MA, Rahman S, Bateman NW, Zhang W, Conrads TP, Steeg PS. The murine metastatic microenvironment of experimental brain metastases of breast cancer differs by host age in vivo: a proteomic study. Clin Exp Metastasis 2024; 41:229-249. [PMID: 37917186 DOI: 10.1007/s10585-023-10233-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 09/07/2023] [Indexed: 11/04/2023]
Abstract
Breast cancer in young patients is known to exhibit more aggressive biological behavior and is associated with a less favorable prognosis than the same disease in older patients, owing in part to an increased incidence of brain metastases. The mechanistic explanations behind these findings remain poorly understood. We recently reported that young mice, in comparison to older mice, developed significantly greater brain metastases in four mouse models of triple-negative and luminal B breast cancer. Here we have performed a quantitative mass spectrometry-based proteomic analysis to identify proteins potentially contributing to age-related disparities in the development of breast cancer brain metastases. Using a mouse hematogenous model of brain-tropic triple-negative breast cancer (MDA-MB-231BR), we harvested subpopulations of tumor metastases, the tumor-adjacent metastatic microenvironment, and uninvolved brain tissues via laser microdissection followed by quantitative proteomic analysis using high resolution mass spectrometry to characterize differentially abundant proteins potentially contributing to age-dependent rates of brain metastasis. Pathway analysis revealed significant alterations in signaling pathways, particularly in the metastatic microenvironment, modulating tumorigenesis, metabolic processes, inflammation, and neuronal signaling. Tenascin C (TNC) was significantly elevated in all laser microdissection (LMD) enriched compartments harvested from young mice relative to older hosts, which was validated and confirmed by immunoblot analysis of whole brain lysates. Additional in vitro studies including migration and wound-healing assays demonstrated TNC as a positive regulator of tumor cell migration. These results provide important new insights regarding microenvironmental factors, including TNC, as mechanisms contributing to the increased brain cancer metastatic phenotype observed in young breast cancer patients.
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Affiliation(s)
- Allison L Hunt
- Women's Health Integrated Research Center, Inova Women's Service Line, Inova Health System, 3289 Woodburn Rd, Annandale, VA, 22042, USA
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
| | - Imran Khan
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Alex M L Wu
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
- Zymeworks Inc, Vancouver, BC, V5T 1G4, Canada
| | - Sasha C Makohon-Moore
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Brian L Hood
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Kelly A Conrads
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Tamara Abulez
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Jonathan Ogata
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Dave Mitchell
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Glenn Gist
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Julie Oliver
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Debbie Wei
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Monika A Chung
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - Samiur Rahman
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Nicholas W Bateman
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
- Department of Surgery, The John P. Murtha Cancer Center Research Program, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
| | - Wei Zhang
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Thomas P Conrads
- Women's Health Integrated Research Center, Inova Women's Service Line, Inova Health System, 3289 Woodburn Rd, Annandale, VA, 22042, USA.
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA.
- Department of Surgery, The John P. Murtha Cancer Center Research Program, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA.
| | - Patricia S Steeg
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA.
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Kanki H, Matsumoto H, Togami Y, Okuzaki D, Ogura H, Sasaki T, Mochizuki H. Importance of microRNAs by mRNA-microRNA integration analysis in acute ischemic stroke patients. J Stroke Cerebrovasc Dis 2023; 32:107277. [PMID: 37562178 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/12/2023] Open
Abstract
OBJECTS The roles of mRNA and microRNA (miRNA) are well known in many diseases, including ischemic stroke; thus, integration analysis using mRNA and miRNA is important to elucidate pathogenesis. However, their contribution, especially that of miRNA-targeted mRNA, to the severity of acute ischemic stroke remains unclear. Therefore, we examined mRNA and miRNA integration analysis targeted for acute ischemic stroke to clarify the pathway related to acute stroke severity. MATERIAL AND METHODS We performed Ingenuity Pathway Analysis (IPA) using RNA extracted from the whole blood of four healthy controls, six minor acute ischemic stroke patients (MS; National Institutes of Health Stroke Scale [NIHSS] < 8), and six severe acute ischemic stroke patients (SS; NIHSS ≥ 8) on admission. mRNA and miRNA were measured using RNA sequencing and RNA expression variation; canonical pathway analysis (CPA) and upstream regulator analyses were performed. RESULTS Acute ischemic stroke patients demonstrated different RNA expressions to healthy controls. Compared to MS patients, in the SS patients, 1222 mRNA, 96 miRNA, and 935 miRNA-targeted mRNA expressions were identified among differentially expressed RNA expressions (p<0.05, |log2 fold change| >1.1). CPA by IPA using mRNAs or miRNA-targeted mRNAs showed that macrophage-stimulating protein (MSP)-recepteur d'origine nantais (RON) signaling was mostly activated in SS patients compared to in MS patients. In addition, upstream regulator analysis in IPA showed that most mRNAs located upstream are miRNAs. CONCLUSIONS In severe acute stroke, integration of mRNA and microRNA analysis showed activated MSP-RON signaling in macrophages, and multiple miRNAs comprehensively controlled the overall pathophysiology of stroke.
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Affiliation(s)
- Hideaki Kanki
- Department of Neurology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Hisatake Matsumoto
- Department of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Yuki Togami
- Department of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Hiroshi Ogura
- Department of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan; Department of Neurotherapeutics, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan.
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
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Sanjeev D, Dagamajalu S, Shaji V, George M, Subbannayya Y, Prasad TSK, Raju R, Devasahayam Arokia Balaya R. A network map of macrophage-stimulating protein (MSP) signaling. J Cell Commun Signal 2023; 17:1113-1120. [PMID: 37142846 PMCID: PMC10409925 DOI: 10.1007/s12079-023-00755-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/20/2023] [Indexed: 05/06/2023] Open
Abstract
Macrophage-stimulating protein (MSP), a serum-derived growth factor belonging to the plasminogen-related kringle domain family, is mainly produced by the liver and released into the blood. MSP is the only known ligand for RON ("Recepteur d'Origine Nantais", also known as MST1R), which is a member of the receptor tyrosine kinase (RTK) family. MSP is associated with many pathological conditions, including cancer, inflammation, and fibrosis. Activation of the MSP/RON system regulates main downstream signaling pathways, including phosphatidylinositol 3-kinase/ AKT serine/threonine kinase/ (PI3-K/AKT), mitogen-activated protein kinases (MAPK), c-Jun N-terminal kinase (JNK) & Focal adhesion kinase (FAK). These pathways are mainly involved in cell proliferation, survival, migration, invasion, angiogenesis & chemoresistance. In this work, we created a pathway resource of signaling events mediated by MSP/RON considering its contribution to diseases. We provide an integrated pathway reaction map of MSP/RON that is composed of 113 proteins and 26 reactions based on the curation of data from the published literature. The consolidated pathway map of MSP/RON mediated signaling events contains seven molecular associations, 44 enzyme catalysis, 24 activation/inhibition, six translocation events, 38 gene regulation events, and forty-two protein expression events. The MSP/RON signaling pathway map can be freely accessible through the WikiPathways Database URL: https://classic.wikipathways.org/index.php/Pathway:WP5353 .
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Affiliation(s)
- Diya Sanjeev
- Centre for Integrative OmicsData Science (CIODS), Yenepoya (Deemed to be University), Derlakatte, Mangalore, Karnataka 575018 India
| | - Shobha Dagamajalu
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018 India
| | - Vineetha Shaji
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018 India
| | - Mejo George
- Centre for Integrative OmicsData Science (CIODS), Yenepoya (Deemed to be University), Derlakatte, Mangalore, Karnataka 575018 India
| | - Yashwanth Subbannayya
- School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH UK
| | - T. S. Keshava Prasad
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018 India
| | - Rajesh Raju
- Centre for Integrative OmicsData Science (CIODS), Yenepoya (Deemed to be University), Derlakatte, Mangalore, Karnataka 575018 India
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka 575018 India
| | - Rex Devasahayam Arokia Balaya
- Centre for Integrative OmicsData Science (CIODS), Yenepoya (Deemed to be University), Derlakatte, Mangalore, Karnataka 575018 India
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Kiasalari Z, Afshin-Majd S, Baluchnejadmojarad T, Azadi-Ahmadabadi E, Esmaeil-Jamaat E, Fahanik-Babaei J, Fakour M, Fereidouni F, Ghasemi-Tarie R, Jalalzade-Ogvar S, Khodashenas V, Sanaierad A, Zahedi E, Roghani M. Ellagic acid ameliorates neuroinflammation and demyelination in experimental autoimmune encephalomyelitis: Involvement of NLRP3 and pyroptosis. J Chem Neuroanat 2020; 111:101891. [PMID: 33217488 DOI: 10.1016/j.jchemneu.2020.101891] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/07/2020] [Accepted: 11/14/2020] [Indexed: 10/23/2022]
Abstract
Multiple sclerosis (MS) is presented as the most common autoimmune and demyelinating neurological disorder with incapacitating complications and with no definite therapy. Most treatments for MS mainly focus on attenuation of its severity and recurrence. To model MS reliably to study pathogenesis and efficacy of possible chemicals, experimental autoimmune encephalomyelitis (EAE) condition is induced in rodents. Ellagic acid is a neuroprotective polyphenol that can protect against demyelination. This study was planned and conducted to assess its possible beneficial effect in MOG-induced EAE model of MS with emphasis on uncovering its modes of action. Ellagic acid was given p.o. (at doses of 10 or 50 mg/kg/day) after development of clinical signs of MS to C57BL/6 mice immunized with MOG35-55. Results showed that ellagic acid can ameliorate severity of the disease and partially restore tissue level of TNFα, IL-6, IL-17A and IL-10. Besides, ellagic acid lowered tissue levels of NLRP3 and caspase 1 in addition to its mitigation of neuroinflammation, demyelination and axonal damage in spinal cord specimens of EAE group. As well, ellagic acid treatment prevented reduction of MBP and decreased GFAP and Iba1 immunoreactivity. Taken together, ellagic acid can decrease severity of EAE via amelioration of astrogliosis, astrocyte activation, demyelination, neuroinflammation and axonal damage that is partly related to its effects on NLRP3 inflammasome and pyroptotic pathway.
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Affiliation(s)
- Zahra Kiasalari
- Neurophysiology Research Center, Shahed University, Tehran, Iran
| | | | | | | | | | - Javad Fahanik-Babaei
- School of Medicine, Iran University of Medical Sciences and Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Marzieh Fakour
- Department of Physiology, School of Medicine, Shahed University, Tehran, Iran
| | - Farzane Fereidouni
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Vahid Khodashenas
- Department of Physiology, School of Medicine, Shahed University, Tehran, Iran
| | - Ashkan Sanaierad
- Department of Physiology, School of Medicine, Shahed University, Tehran, Iran
| | - Elham Zahedi
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Roghani
- Neurophysiology Research Center, Shahed University, Tehran, Iran.
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6
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Huang L, Fang X, Shi D, Yao S, Wu W, Fang Q, Yao H. MSP-RON Pathway: Potential Regulator of Inflammation and Innate Immunity. Front Immunol 2020; 11:569082. [PMID: 33117355 PMCID: PMC7577085 DOI: 10.3389/fimmu.2020.569082] [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: 07/01/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022] Open
Abstract
Macrophage-stimulating protein (MSP), a soluble protein mainly synthesized by the liver, is the only known ligand for recepteur d'origine nantais (RON), which is a member of the MET proto-oncogene family. Recent studies show that the MSP-RON signaling pathway not only was important in tumor behavior but also participates in the occurrence or development of many immune system diseases. Activation of RON in macrophages results in the inhibition of nitric oxide synthesis as well as lipopolysaccharide (LPS)-induced inflammatory response. MSP-RON is also associated with chronic inflammatory responses, especially chronic liver inflammation, and might serve as a novel regulator of inflammation, which may affect the metabolism in the body. Another study provided evidence of the relationship between MSP-RON and autoimmune diseases, suggesting a potential role for MSP-RON in the development of drugs for autoimmune diseases. Moreover, MSP-RON plays an important role in maintaining the stability of the tissue microenvironment and contributes to immune escape in the tumor immune microenvironment. Here, we summarize the role of MSP-RON in immunity, based on recent findings, and lay the foundation for further research.
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Affiliation(s)
- Lingtong Huang
- Department of Critical Care Units, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xueling Fang
- Department of Critical Care Units, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Danrong Shi
- State Key Laboratory for Diagnosis & Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shuhao Yao
- Department of Stormotologry, Wenzhou Medical University Renji College, Wenzhou, China
| | - Weifang Wu
- Department of Critical Care Units, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qiang Fang
- Department of Critical Care Units, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hangping Yao
- State Key Laboratory for Diagnosis & Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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7
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Kiasalari Z, Afshin-Majd S, Baluchnejadmojarad T, Azadi-Ahmadabadi E, Fakour M, Ghasemi-Tarie R, Jalalzade-Ogvar S, Khodashenas V, Tashakori-Miyanroudi M, Roghani M. Sinomenine Alleviates Murine Experimental Autoimmune Encephalomyelitis Model of Multiple Sclerosis through Inhibiting NLRP3 Inflammasome. J Mol Neurosci 2020; 71:215-224. [PMID: 32812186 DOI: 10.1007/s12031-020-01637-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/16/2020] [Indexed: 12/14/2022]
Abstract
Multiple sclerosis (MS) is known as a chronic neuroinflammatory disorder typified by an immune-mediated demyelination process with ensuing axonal damage and loss. Sinomenine is a natural alkaloid with different therapeutic benefits, including anti-inflammatory and immunosuppressive activities. In this study, possible beneficial effects of sinomenine in an MOG-induced model of MS were determined. Sinomenine was given to MOG35-55-immunized C57BL/6 mice at doses of 25 or 100 mg/kg/day after onset of MS clinical signs till day 30 post-immunization. Analyzed data showed that sinomenine reduces severity of the clinical signs and to some extent decreases tissue level of pro-inflammatory cytokines IL-1β, IL-6, IL-18, TNFα, IL-17A, and increases level of anti-inflammatory IL-10. In addition, sinomenine successfully attenuated tissue levels of inflammasome NLRP3, ASC, and caspase 1 besides its reduction of intensity of neuroinflammation, demyelination, and axonal damage and loss in lumbar spinal cord specimens. Furthermore, immunoreactivity for MBP decreased and increased for GFAP and Iba1 after MOG-immunization, which was in part reversed upon sinomenine administration. Overall, sinomenine decreases EAE severity, which is attributed to its alleviation of microglial and astrocytic mobilization, demyelination, and axonal damage along with its suppression of neuroinflammation, and its beneficial effect is also associated with its inhibitory effects on inflammasome and pyroptotic pathways; this may be of potential benefit for the primary progressive phenotype of MS.
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MESH Headings
- Animals
- Astrocytes/drug effects
- Body Weight
- Cytokines/analysis
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Drug Evaluation, Preclinical
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Female
- Inflammasomes/antagonists & inhibitors
- Mice
- Mice, Inbred C57BL
- Microglia/drug effects
- Morphinans/administration & dosage
- Morphinans/pharmacology
- Morphinans/therapeutic use
- Myelin-Oligodendrocyte Glycoprotein/immunology
- Myelin-Oligodendrocyte Glycoprotein/toxicity
- NLR Family, Pyrin Domain-Containing 3 Protein/antagonists & inhibitors
- Peptide Fragments/immunology
- Peptide Fragments/toxicity
- Pyroptosis/drug effects
- Random Allocation
- Specific Pathogen-Free Organisms
- Spinal Cord/chemistry
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Affiliation(s)
- Zahra Kiasalari
- Neurophysiology Research Center, Shahed University, Tehran, Iran
| | | | | | | | - Marzieh Fakour
- Department of Physiology, School of Medicine, Shahed University, Tehran, Iran
| | | | | | - Vahid Khodashenas
- Department of Physiology, School of Medicine, Shahed University, Tehran, Iran
| | | | - Mehrdad Roghani
- Neurophysiology Research Center, Shahed University, Tehran, Iran.
- Department of Physiology, School of Medicine, Shahed University, Tehran, Iran.
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8
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Dey A, Allen JN, Fraser JW, Snyder LM, Tian Y, Zhang L, Paulson RF, Patterson A, Cantorna MT, Hankey-Giblin PA. Neuroprotective Role of the Ron Receptor Tyrosine Kinase Underlying Central Nervous System Inflammation in Health and Disease. Front Immunol 2018; 9:513. [PMID: 29616029 PMCID: PMC5868034 DOI: 10.3389/fimmu.2018.00513] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/27/2018] [Indexed: 12/19/2022] Open
Abstract
Neurodegeneration is a critical problem in aging populations and is characterized by severe central nervous system (CNS) inflammation. Macrophages closely regulate inflammation in the CNS and periphery by taking on different activation states. The source of inflammation in many neurodegenerative diseases has been preliminarily linked to a decrease in the CNS M2 macrophage population and a subsequent increase in M1-mediated neuroinflammation. The Recepteur D'Origine Nantais (Ron) is a receptor tyrosine kinase expressed on tissue-resident macrophages including microglia. Activation of Ron by its ligand, macrophage-stimulating protein, attenuates obesity-mediated inflammation in the periphery. An in vivo deletion of the ligand binding domain of Ron (Ron-/-) promotes inflammatory (M1) and limits a reparative (M2) macrophage activation. However, whether or not this response influences CNS inflammation has not been determined. In this study, we demonstrate that in homeostasis Ron-/- mice developed an inflammatory CNS niche with increased tissue expression of M1-associated markers when compared to age-matched wild-type (WT) mice. Baseline metabolic analysis of CNS tissue indicates exacerbated levels of metabolic stress in Ron-/- CNS. In a disease model of multiple sclerosis, experimental autoimmune encephalomyelitis, Ron-/- mice exhibit higher disease severity when compared to WT mice associated with increased CNS tissue inflammation. In a model of diet-induced obesity (DIO), Ron-/- mice exhibit exacerbated CNS inflammation with decreased expression of the M2 marker Arginase-1 (Arg-1) and a robust increase in M1 markers compared to WT mice following 27 weeks of DIO. Collectively, these results illustrate that activation of Ron in the CNS could be a potential therapeutic approach to treating various grades of CNS inflammation underlying neurodegeneration.
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Affiliation(s)
- Adwitia Dey
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Joselyn N Allen
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - James W Fraser
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Lindsay M Snyder
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Yuan Tian
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States.,CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, University of Chinese Academy of Sciences, Wuhan, China
| | - Limin Zhang
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Robert F Paulson
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Andrew Patterson
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Margherita T Cantorna
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Pamela A Hankey-Giblin
- Center for Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, United States
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9
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S-allyl cysteine improves clinical and neuropathological features of experimental autoimmune encephalomyelitis in C57BL/6 mice. Biomed Pharmacother 2018; 97:557-563. [DOI: 10.1016/j.biopha.2017.10.155] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/24/2017] [Accepted: 10/24/2017] [Indexed: 12/11/2022] Open
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10
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Ghorbani S, Talebi F, Chan WF, Masoumi F, Vojgani M, Power C, Noorbakhsh F. MicroRNA-181 Variants Regulate T Cell Phenotype in the Context of Autoimmune Neuroinflammation. Front Immunol 2017; 8:758. [PMID: 28769921 PMCID: PMC5515858 DOI: 10.3389/fimmu.2017.00758] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/15/2017] [Indexed: 12/12/2022] Open
Abstract
Background Recent studies have revealed that multiple sclerosis (MS) lesions have distinct microRNA (miRNA) expression profiles. miR-181 family members show altered expression in MS tissues although their participation in MS pathogenesis remains uncertain. Herein, we investigated the involvement of miR-181a and miR-181b in the pathogenesis of MS and its animal model, experimental autoimmune encephalomyelitis (EAE). Methods miR-181a and -b levels were measured in the central nervous system (CNS) of patients with MS and mice with EAE as well as relevant leukocyte cultures by real-time RT-PCR. To examine the role of the miRNAs in leukocyte differentiation and function, miR-181a and -b mimic sequences were transfected into cultured primary macrophages and purified CD4+ T cells which were then analyzed by RT-PCR and flow cytometry. Luciferase reporter assays were performed to investigate the interaction of miR-181a and -b with the 3′-UTR of potential target transcripts, and the expression of target genes was measured in the CNS of EAE mice, activated lymphocytes, and macrophages. Results Expression analyses revealed a significant decrease in miR-181a and -b levels in brain white matter from MS patients as well as in spinal cords of EAE mice during the acute and chronic phases of disease. Suppression of miR-181a was observed following antigen-specific or polyclonal activation of lymphocytes as well as in macrophages following LPS treatment. Overexpression of miR-181a and -b mimic sequences reduced proinflammatory gene expression in macrophages and polarization toward M1 phenotype. miR-181a and -b mimic sequences inhibited Th1 generation in CD4+ T cells and miR-181a mimic sequences also promoted Treg differentiation. Luciferase assays revealed Suppressor of mothers against decapentaplegic 7 (Smad7), as a direct target of miR-181a and -b. Conclusion Our data highlight the anti-inflammatory actions of miR-181a and -b in the context of autoimmune neuroinflammation. miR-181a and -b influence differentiation of T helper cell and activation of macrophages, providing potential therapeutic options for controlling inflammation in MS.
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Affiliation(s)
- Samira Ghorbani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Shefa Neuroscience Research Center, Khatam Al-Anbia Hospital, Tehran, Iran
| | - Farideh Talebi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Wing Fuk Chan
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, Canada
| | - Farimah Masoumi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammed Vojgani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Christopher Power
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, Canada.,Multiple Sclerosis Centre, University of Alberta, Edmonton, AB, Canada
| | - Farshid Noorbakhsh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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11
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Feng T, Gan J, Qin A, Huang X, Wu N, Hu H, Yao H. HIV‑1 downregulates the expression and phosphorylation of receptor tyrosine kinase by targeting the NF‑κB pathway. Mol Med Rep 2016; 14:1947-52. [PMID: 27432185 PMCID: PMC4991670 DOI: 10.3892/mmr.2016.5487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 06/24/2016] [Indexed: 11/12/2022] Open
Abstract
Macrophages are major targets of human immunodeficiency virus (HIV) and can act as long-term reservoirs of the virus. Chronic HIV-1 infection is associated with dysregulated inflammation. Recepteur d'origine nantais (RON) is expressed in tissue resident macrophages and functions to maintain inflammatory homeostasis. The present study aimed to compare the expression of RON on HIV-positive and -negative participants, and to investigate the mechanism by which HIV-1 influences the expression and function of RON in the JLTRG T cell line. The levels of RON and the RON ligand, macrophage-stimulating protein (MSP), in the peripheral blood of HIV-1-positive patients that were receiving (n=22) or not receiving highly active anti-retroviral therapy (HAART) (n=82) and 37 healthy control participants were determined by enzyme-linked immunosorbent assay. Expression of RON and MSP in the JLTRG T cell line was assessed by western blotting and the subcellular location was analyzed by fluorescence microscopy. JLTRG cells were co-cultured with a cell line that stably expresses HIV, H9/HTLV-IIIB, and alterations in the levels of RON and nuclear factor-κB (NF-κB) in JLTRG cells were assessed by western blotting. The expression of RON and MSP were significantly different in the serum of HIV-1- positive patients that were receiving HAART compared with those not receiving HAART (P<0.05) and healthy control patients (P<0.01). RON was detected in JLTRG cells, and was shown to be downregulated by HIV-1 infection. HIV-1 infection of JLTRG cells also reduced NF-κB phosphorylation. Thus, HIV-1 was shown to downregulate the expression and phosphorylation of RON by targeting the NF-κB pathway.
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Affiliation(s)
- Tingting Feng
- Department of Infectious Disease, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Jianhe Gan
- Department of Infectious Disease, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Ailan Qin
- Department of Infectious Disease, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Xiaoping Huang
- Department of Infectious Disease, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Hua Hu
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
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12
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Yu S, Allen JN, Dey A, Zhang L, Balandaram G, Kennett MJ, Xia M, Xiong N, Peters JM, Patterson A, Hankey-Giblin PA. The Ron Receptor Tyrosine Kinase Regulates Macrophage Heterogeneity and Plays a Protective Role in Diet-Induced Obesity, Atherosclerosis, and Hepatosteatosis. THE JOURNAL OF IMMUNOLOGY 2016; 197:256-65. [DOI: 10.4049/jimmunol.1600450] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 04/13/2016] [Indexed: 12/11/2022]
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13
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HGFL supports mammary tumorigenesis by enhancing tumor cell intrinsic survival and influencing macrophage and T-cell responses. Oncotarget 2016; 6:17445-61. [PMID: 25938541 PMCID: PMC4627320 DOI: 10.18632/oncotarget.3641] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 04/07/2015] [Indexed: 01/11/2023] Open
Abstract
The Ron receptor is overexpressed in human breast cancers and is associated with heightened metastasis and poor survival. Ron overexpression in the mammary epithelium of mice is sufficient to induce aggressive mammary tumors with a high degree of metastasis. Despite the well-documented role of Ron in breast cancer, few studies have examined the necessity of the endogenous Ron ligand, hepatocyte growth factor-like protein (HGFL) in mammary tumorigenesis. Herein, mammary tumor growth and metastasis were examined in mice overexpressing Ron in the mammary epithelium with or without HGFL. HGFL ablation decreased oncogenic Ron activation and delayed mammary tumor initiation. HGFL was important for tumor cell proliferation and survival. HGFL loss resulted in increased numbers of macrophages and T-cells within the tumor. T-cell proliferation and cytotoxicity dramatically increased in HGFL deficient mice. Biochemical analysis of HGFL proficient tumors showed increased local HGFL production, with HGFL loss decreasing β-catenin expression and NF-κB activation. Re-expression of HGFL in HGFL deficient tumor cells stimulated cell migration and invasion with coordinate activation of NF-κB and reduced apoptosis. Together, these results demonstrate critical in vivo functions for HGFL in promoting breast tumorigenesis and suggest that targeting HGFL may inhibit tumor growth and reactivate anti-tumor immune responses.
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14
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Rahimi A, Faizi M, Talebi F, Noorbakhsh F, Kahrizi F, Naderi N. Interaction between the protective effects of cannabidiol and palmitoylethanolamide in experimental model of multiple sclerosis in C57BL/6 mice. Neuroscience 2015; 290:279-87. [PMID: 25637488 DOI: 10.1016/j.neuroscience.2015.01.030] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 01/01/2015] [Accepted: 01/10/2015] [Indexed: 01/10/2023]
Abstract
Cannabinoids (CBs) have recently been approved to exert broad anti-inflammatory activities in experimental models of multiple sclerosis (MS). It has been demonstrated that these compounds could also have effects on neurodegeneration, demyelination, and autoimmune processes occurring in the pathology of MS. However, the clinical use of CBs is limited by their psychoactive effects. Among cannabinoid compounds, cannabidiol (CBD) and palmitoylethanolamide (PEA) have no psychotropic activities. We induced experimental autoimmune encephalomyelitis (EAE), a model of MS, by injecting myelin oligodendrocyte glycoprotein (MOG) to C57BL/6 mice. We assessed the effects of CBD, PEA, and co-administration of CBD and PEA on neurobehavioral scores, immune cell infiltration, demyelination, axonal injury, and the expression of inflammatory cytokines by using histochemistry methods and real-time RT-PCR. Treatment with either CBD (5mg/kg) or PEA (5mg/kg) during disease onset reduced the severity of the neurobehavioral scores of EAE. This effect of CBD and PEA was accompanied by diminished inflammation, demyelination, axonal damage and inflammatory cytokine expression while concurrent administration of CBD (5mg/kg) and PEA (5mg/kg) was not as effective as treatment with either drug per se. These results suggest that, CBD and PEA, non-psychoactive CBs, attenuate neurobehavioral deficits, histological damage, and inflammatory cytokine expression in MOG-immunized animals. However, there is an antagonistic interaction between CBD and PEA in protection against MOG-induced disease.
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Affiliation(s)
- A Rahimi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Faizi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - F Talebi
- Khatam-Al-Anbia Hospital, Shefa Neuroscience Research Center, Tehran, Iran
| | - F Noorbakhsh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - F Kahrizi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - N Naderi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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15
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Noorbakhsh F, Baker GB, Power C. Allopregnanolone and neuroinflammation: a focus on multiple sclerosis. Front Cell Neurosci 2014; 8:134. [PMID: 24917787 PMCID: PMC4042158 DOI: 10.3389/fncel.2014.00134] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 04/29/2014] [Indexed: 12/20/2022] Open
Abstract
The progesterone derivative allopregnanolone (ALLO) is one of the most widely studied compounds among neurosteroids. Through interactions with GABA-A receptors expressed by neurons and glial cells, ALLO has been shown to affect diverse aspects of neural cell physiology, including cell proliferation and survival, migration, and gene expression. Recent data point to important roles for ALLO in different neurodegenerative disorders, including Alzheimer's disease, Parkinson's disease, and multiple sclerosis (MS). Dysregulation in ALLO biosynthesis pathways has been reported in brain tissue from MS patients as well as in the central nervous system (CNS) tissue derived from MS animal models. Administration of ALLO has been shown to ameliorate neurobehavioral deficits together with neuropathology and inflammation in the CNS of animals with autoimmune demyelination. These findings are in line with previous reports indicating growth- and differentiation-promoting actions of ALLO on neurons and glial cells as well as its neuroprotective effects in the context of other CNS diseases. Nonetheless, these findings have also raised the possibility that ALLO might influence leukocyte biology and associated neuroinflammatory mechanisms independent of its neuroregenerative properties. Herein, we review the current knowledge regarding the role of ALLO in the pathogenesis of MS, and discuss the potential cellular and molecular pathways that might be influenced by ALLO in the context of disease.
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Affiliation(s)
- Farshid Noorbakhsh
- Department of Immunology, Faculty of Medicine, Tehran University of Medical Sciences Tehran, Iran
| | - Glen B Baker
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada
| | - Christopher Power
- Department of Psychiatry, University of Alberta Edmonton, AB, Canada ; Department of Medicine (Neurology), University of Alberta Edmonton, AB, Canada
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16
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Cary DC, Clements JE, Henderson AJ. RON receptor tyrosine kinase, a negative regulator of inflammation, is decreased during simian immunodeficiency virus-associated central nervous system disease. THE JOURNAL OF IMMUNOLOGY 2013; 191:4280-7. [PMID: 24043899 DOI: 10.4049/jimmunol.1300797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Expressed on tissue-resident macrophages, the receptor tyrosine kinase, recepteur d'orgine nantais (RON), functions to maintain inflammation homeostasis by activating genes that promote wound repair and resolve inflammation while repressing genes that perpetuate tissue damage and cell death. Chronic HIV-1 infection is associated with dysregulated inflammation, and we hypothesize that diminished RON expression contributes to the development of end organ diseases such as HIV-1-associated CNS disease. To explore RON function in vivo, we used CNS tissue from a well-characterized SIV macaque model and examined the temporal regulation of RON in the brain during the course of infection. Following prolonged SIV infection, RON expression was inversely correlated with the development of CNS disease; RON was maintained in animals that did not develop CNS lesions and was reduced in SIV-infected macaques that demonstrated moderate to severe inflammatory lesions. Arginase-1 expression was reduced in the brain during late infection, whereas expression of the inflammatory genes, IL-12p40 and TNF-α, was elevated. To validate a role for RON in regulating HIV-1 in primary cells, we used human tissue-resident macrophages isolated from tonsil as a tractable cell model. RON signaling in tissue-resident macrophages, both ligand dependent and independent, limited HIV-1 replication. Furthermore, prolonged HIV-1 infection in vitro resulted in downregulation of RON. We propose a model in which, following chronic HIV-1 infection in the brain, RON expression is decreased, genes that quell inflammation are repressed, and inflammatory mediators are induced to promote tissue inflammation.
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Affiliation(s)
- Daniele C Cary
- Department of Microbiology, Boston University School of Medicine, Boston, MA 02118
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17
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Kulkarni RM, Kutcher LW, Stuart WD, Carson DJ, Leonis MA, Waltz SE. Ron receptor-dependent gene regulation in a mouse model of endotoxin-induced acute liver failure. Hepatobiliary Pancreat Dis Int 2012; 11:383-92. [PMID: 22893465 PMCID: PMC4102423 DOI: 10.1016/s1499-3872(12)60196-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Prior experimentation has shown that loss of the tyrosine kinase (TK) signaling domain of the Ron receptor leads to marked hepatocyte protection in a model of lipopolysaccharide-induced acute liver failure (ALF) in D-galactosamine (GalN)-sensitized mice. The aim of this study was to identify the role of Ron in the regulation of hepatic gene expression. METHODS Microarray analyses were performed on liver RNA isolated sequentially from wild-type (WT) and TK-/- mice during the progression of ALF. Gene array data were validated using Western and immunohistochemistry analyses as well as with ex vivo culture systems. RESULTS At baseline, 101 genes were differentially expressed between WT and TK-/- livers, which regulate processes involved in hypoxia, proliferation, apoptosis and metabolism. One hour after ALF induction, WT livers exhibited increased cytokine expression compared to TK-/- livers, and after 4 hours, an induction of suppressor of cytokine signaling (SOCS) genes as well as JAK-STAT pathway activation were prominent in TK-/- livers compared to controls. CONCLUSION Our studies suggest a novel hepato-protective mechanism in Ron TK-/- mice wherein increased and sustained SOCS production and JAK-STAT activation in the hepatocyte may inhibit the destructive proinflammatory milieu and promote survival factors which blunt hepatic death and the ensuing development of ALF.
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Affiliation(s)
- Rishikesh M. Kulkarni
- Department of Cancer and Cell Biology, University of Cincinnati, Cincinnati, OH 45267-0521
| | - Louis W. Kutcher
- Department of Biology, University of Cincinnati, Cincinnati, OH 45267-0521
| | - William D. Stuart
- Department of Cancer and Cell Biology, University of Cincinnati, Cincinnati, OH 45267-0521
| | - Daniel J. Carson
- Department of Biology, University of Cincinnati, Cincinnati, OH 45267-0521
| | - Mike A. Leonis
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
| | - Susan E. Waltz
- Department of Cancer and Cell Biology, University of Cincinnati, Cincinnati, OH 45267-0521,Departments of Research, Shriner’s Hospital for Children, Cincinnati, OH 45267-0521,Cincinnati Veterans Affairs Medical Center, Cincinnati, OH 45267-0521,Corresponding Author: Susan E. Waltz, Ph.D., Department of Cancer and Cell Biology, 3125 Eden Ave., University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, Telephone: (513) 558-8675,
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Deslauriers AM, Afkhami-Goli A, Paul AM, Bhat RK, Acharjee S, Ellestad KK, Noorbakhsh F, Michalak M, Power C. Neuroinflammation and endoplasmic reticulum stress are coregulated by crocin to prevent demyelination and neurodegeneration. THE JOURNAL OF IMMUNOLOGY 2011; 187:4788-99. [PMID: 21964030 DOI: 10.4049/jimmunol.1004111] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Endoplasmic reticulum (ER) stress is a homeostatic mechanism, which is used by cells to adapt to intercellular and intracellular changes. Moreover, ER stress is closely linked to inflammatory pathways. We hypothesized that ER stress is an integral component of neuroinflammation and contributes to the development of neurological diseases. In autopsied brain specimens from multiple sclerosis (MS) and non-MS patients, XBP-1 spliced variant (XBP-1/s) was increased in MS brains (p < 0.05) and was correlated with the expression of the human endogenous retrovirus-W envelope transcript, which encodes the glycoprotein, Syncytin-1 (p < 0.05). In primary human fetal astrocytes transfected with a Syncytin-1-expressing plasmid, XBP-1/s, BiP, and NOS2 were induced, which was suppressed by crocin treatment (p < 0.05). Crocin also protected oligodendrocytes exposed to cytotoxic supernatants derived from Syncytin-1-expressing astrocytes (p < 0.05) and NO-mediated oligodendrocytotoxicity (p < 0.05). During experimental autoimmune encephalomyelitis (EAE), the transcript levels of the ER stress genes XBP-1/s, BiP, PERK, and CHOP were increased in diseased spinal cords compared with healthy littermates (p < 0.05), although CHOP expression was not involved in the EAE disease phenotype. Daily treatment with crocin starting on day 7 post-EAE induction suppressed ER stress and inflammatory gene expression in spinal cords (p < 0.05), which was accompanied by preserved myelination and axonal density, together with reduced T cell infiltration and macrophage activation. EAE-associated neurobehavioral deficits were also ameliorated by crocin treatment (p < 0.05). These findings underscored the convergent roles of pathogenic ER stress and immune pathways in neuroinflammatory disease and point to potential therapeutic applications for crocin.
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Affiliation(s)
- André M Deslauriers
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
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Sharda DR, Yu S, Ray M, Squadrito ML, De Palma M, Wynn TA, Morris SM, Hankey PA. Regulation of macrophage arginase expression and tumor growth by the Ron receptor tyrosine kinase. THE JOURNAL OF IMMUNOLOGY 2011; 187:2181-92. [PMID: 21810604 DOI: 10.4049/jimmunol.1003460] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
M1 activation of macrophages promotes inflammation and immunity to intracellular pathogens, whereas M2 macrophage activation promotes resolution of inflammation, wound healing, and tumor growth. These divergent phenotypes are characterized, in part, by the expression of inducible NO synthase and arginase I (Arg1) in M1 versus M2 activated macrophages, respectively. In this study, we demonstrate that the Ron receptor tyrosine kinase tips the balance of macrophage activation by attenuating the M1 phenotype while promoting expression of Arg1 through a Stat6-independent mechanism. Induction of the Arg1 promoter by Ron is mediated by an AP-1 site located 433 bp upstream of the transcription start site. Treatment of primary macrophages with macrophage stimulating protein, the ligand for Ron, induces potent MAPK activation, upregulates Fos, and enhances binding of Fos to the AP-1 site in the Arg1 promoter. In vivo, Arg1 expression in tumor-associated macrophages (TAMs) from Ron(-/-) mice was significantly reduced compared with that in TAMs from control animals. Furthermore, we show that Ron is expressed specifically by Tie2-expressing macrophages, a TAM subset that exhibits a markedly skewed M2 and protumoral phenotype. Decreased Arg1 in TAMs from Ron(-/-) mice was associated with reduced syngeneic tumor growth in these animals. These findings indicate that Ron induces Arg1 expression in macrophages through a previously uncharacterized AP-1 site in the Arg1 promoter and that Ron could be therapeutically targeted in the tumor microenvironment to inhibit tumor growth by targeting expression of Arg1.
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Affiliation(s)
- Daniel R Sharda
- Graduate Program in Pathobiology, Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA
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Ray M, Yu S, Sharda DR, Wilson CB, Liu Q, Kaushal N, Prabhu KS, Hankey PA. Inhibition of TLR4-induced IκB kinase activity by the RON receptor tyrosine kinase and its ligand, macrophage-stimulating protein. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2010; 185:7309-16. [PMID: 21078906 PMCID: PMC4815273 DOI: 10.4049/jimmunol.1000095] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The RON receptor tyrosine kinase regulates the balance between classical (M1) and alternative (M2) macrophage activation. In primary macrophages, the ligand for Ron, macrophage-stimulating protein (MSP), inhibits the expression of inducible NO synthase, a marker of classically activated macrophages, whereas promoting the expression of arginase I, a marker of alternative activation. Ron(-/-) mice express increased levels of IL-12, a product of classically activated macrophages, after endotoxin administration, resulting in increased serum IFN-γ levels and enhanced susceptibility to septic shock. In this study, we demonstrate that MSP inhibits LPS-induced IL-12p40 expression, and this inhibition is dependent on the docking site tyrosines in Ron. To further define this inhibition, we examined the effect of Ron on signaling pathways downstream of Ron. We found that MSP does not inhibit the MyD88-independent activation of IFN regulatory factor 3 and production of IFN-β in response to LPS, nor does it inhibit MyD88-dependent TGF-β-activated kinase phosphorylation or MAPK activation in primary macrophages. However, the induction of IκB kinase activity, IκB degradation, and DNA binding of NF-κB after LPS stimulation is delayed in the presence of MSP. In addition, Ron inhibits serine phosphorylation of p65 and NF-κB transcriptional activity induced by LPS stimulation of TLR4. Finally, MSP inhibits the NF-κB-dependent upregulation of the nuclear IκB family member, IκBζ, a positive regulator of secondary response genes including IL-12p40. LPS also induces expression of Ron and an N-terminally truncated form of Ron, Sf-Ron, in primary macrophages, suggesting that the upregulation of Ron by LPS could provide classical feedback regulation of TLR signaling.
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Affiliation(s)
- Manujendra Ray
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Immunology and Infectious Disease, The Pennsylvania State University, University Park, PA 16802
| | - Shan Yu
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Physiology, The Pennsylvania State University, University Park, PA 16802
| | - Daniel R. Sharda
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Pathobiology, The Pennsylvania State University, University Park, PA 16802
| | - Caleph B. Wilson
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Pathobiology, The Pennsylvania State University, University Park, PA 16802
| | - QingPing Liu
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
| | - Naveen Kaushal
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
| | - K. Sandeep Prabhu
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Immunology and Infectious Disease, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Pathobiology, The Pennsylvania State University, University Park, PA 16802
| | - Pamela A. Hankey
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Immunology and Infectious Disease, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Physiology, The Pennsylvania State University, University Park, PA 16802
- Graduate Program in Pathobiology, The Pennsylvania State University, University Park, PA 16802
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Abstract
Autophagy is emerging as a central regulator of cellular health and disease and, in the central nervous system (CNS), this homeostatic process appears to influence synaptic growth and plasticity. Herein, we review the evidence that dysregulation of autophagy may contribute to several neurodegenerative diseases of the CNS. Up-regulation of autophagy may prevent, delay or ameliorate at least some of these disorders, and - based on recent findings from our laboratory - we speculate that this goal may be achieved using a safe, simple and inexpensive approach.
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Affiliation(s)
- Mehrdad Alirezaei
- Department of Immunology and Microbial Science, SP30-2110, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
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22
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Hepatocyte growth factor inhibits CNS autoimmunity by inducing tolerogenic dendritic cells and CD25+Foxp3+ regulatory T cells. Proc Natl Acad Sci U S A 2010; 107:6424-9. [PMID: 20332205 DOI: 10.1073/pnas.0912437107] [Citation(s) in RCA: 152] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Immune-mediated diseases of the CNS, such as multiple sclerosis and its animal model, experimental autoimmune encephalitis (EAE), are characterized by the activation of antigen-presenting cells and the infiltration of autoreactive lymphocytes within the CNS, leading to demyelination, axonal damage, and neurological deficits. Hepatocyte growth factor (HGF) is a pleiotropic factor known for both neuronal and oligodendrocytic protective properties. Here, we assess the effect of a selective overexpression of HGF by neurons in the CNS of C57BL/6 mice carrying an HGF transgene (HGF-Tg mice). EAE induced either by immunization with myelin oligodendrocyte glycoprotein peptide or by adoptive transfer of T cells was inhibited in HGF-Tg mice. Notably, the level of inflammatory cells infiltrating the CNS decreased, except for CD25(+)Foxp3(+) regulatory T (T(reg)) cells, which increased. A strong T-helper cell type 2 cytokine bias was observed: IFN-gamma and IL-12p70 decreased in the spinal cord of HGF-Tg mice, whereas IL-4 and IL-10 increased. Antigen-specific response assays showed that HGF is a potent immunomodulatory factor that inhibits dendritic cell (DC) function along with differentiation of IL-10-producing T(reg) cells, a decrease in IL-17-producing T cells, and down-regulation of surface markers of T-cell activation. These effects were reversed fully when DC were pretreated with anti-cMet (HGF receptor) antibodies. Our results suggest that, by combining both potentially neuroprotective and immunomodulatory effects, HGF is a promising candidate for the development of new treatments for immune-mediated demyelinating diseases associated with neurodegeneration such as multiple sclerosis.
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23
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Ellestad KK, Tsutsui S, Noorbakhsh F, Warren KG, Yong VW, Pittman QJ, Power C. Early life exposure to lipopolysaccharide suppresses experimental autoimmune encephalomyelitis by promoting tolerogenic dendritic cells and regulatory T cells. THE JOURNAL OF IMMUNOLOGY 2009; 183:298-309. [PMID: 19542441 DOI: 10.4049/jimmunol.0803576] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The rising incidence of autoimmune diseases such as multiple sclerosis (MS) in developed countries might be due to a more hygienic environment, particularly during early life. To investigate this concept, we developed a model of neonatal exposure to a common pathogen-associated molecular pattern, LPS, and determined its impact on experimental autoimmune encephalomyelitis (EAE). Mice exposed to LPS at 2 wk of age showed a delayed onset and diminished severity of myelin oligodendrocyte glycoprotein (MOG)-induced EAE, induced at 12 wk, compared with vehicle-exposed animals. Spinal cord transcript levels of CD3epsilon and F4/80 were lower in LPS- compared with PBS-exposed EAE animals with increased IL-10 levels in the LPS-exposed group. Splenic CD11c(+) cells from LPS-exposed animals exhibited reduced MHC class II and CD83 expression but increased levels of CD80 and CD86 both before and during EAE. MOG-treated APC from LPS-exposed animals stimulated less T lymphocyte proliferation but increased expansion of CD4(+)FoxP3(+) T cells compared with APC from PBS-exposed animals. Neuropathological studies disclosed reduced myelin and axonal loss in spinal cords from LPS-exposed compared with PBS-exposed animals with EAE, and this neuroprotective effect was associated with an increased number of CD3(+)FoxP3(+) immunoreactive cells. Analyses of human brain tissue revealed that FoxP3 expression was detected in lymphocytes, albeit reduced in MS compared with non-MS patients' brains. These findings support the concept of early-life microbial exposure influencing the generation of neuroprotective regulatory T cells and may provide insights into new immunotherapeutic strategies for MS.
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24
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Márquez A, Cénit MC, Núñez C, Mendoza JL, Taxonera C, Díaz-Rubio M, Bartolomé M, Arroyo R, Fernández-Arquero M, de la Concha EG, Urcelay E. Effect of BSN-MST1 locus on inflammatory bowel disease and multiple sclerosis susceptibility. Genes Immun 2009; 10:631-5. [PMID: 19657358 DOI: 10.1038/gene.2009.56] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Genome-wide studies highlighted the effect in Crohn's disease (CD) and ulcerative colitis (UC) susceptibility of single nucleotide polymorphisms (SNPs) in 3p21, where BSN (bassoon), MST1 (macrophage stimulating-1) and MST1R (MST1 Receptor) genes map. MST1R expression was significantly downregulated in multiple sclerosis (MS) compared with control brains, resembling findings in the MS mouse model. We pursued to replicate the effect of this locus on inflammatory bowel diseases and to evaluate its contribution to MS risk. Polymorphisms rs9858542, rs2131109 and rs1128535 were analysed by TaqMan assays in Spanish patients (370 CD, 405 UC and 415 MS) and 800 ethnically matched controls. Allele frequencies of these SNPs were significantly different in CD patients compared with controls [rs9858542: P=0.001, Odds ratio (OR)=1.35; rs2131109: P=0.0005, OR=1.37; rs1128535: P=0.007, OR=0.78] and, specifically, in the ileal phenotype [rs9858542: P=0.0004, OR=1.47; rs2131109: P=0.00009, OR=1.52; rs1128535: P=0.02, OR=0.69]. No differences were detected between UC or MS patients and control individuals. The effect of this locus on CD predisposition was replicated, but no influence on UC or MS predisposition could be detected. This susceptibility locus seems to affect mainly to the ileal CD subphenotype, although this point awaits further corroboration in independent cohorts.
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Affiliation(s)
- A Márquez
- Department of Immunology, Hospital Universitario Clínico San Carlos, Madrid, Spain
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25
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Donnelly DJ, Gensel JC, Ankeny DP, van Rooijen N, Popovich PG. An efficient and reproducible method for quantifying macrophages in different experimental models of central nervous system pathology. J Neurosci Methods 2009; 181:36-44. [PMID: 19393692 DOI: 10.1016/j.jneumeth.2009.04.010] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 04/13/2009] [Accepted: 04/15/2009] [Indexed: 12/31/2022]
Abstract
Historically, microglia/macrophages are quantified in the pathological central nervous system (CNS) by counting cell profiles then expressing the data as cells/mm(2). However, because it is difficult to visualize individual cells in dense clusters and in most cases it is unimportant to know the absolute number of macrophages within lesioned tissue, alternative methods may be more efficient for quantifying the magnitude of the macrophage response in the context of different experimental variables (e.g., therapeutic intervention or time post-injury/infection). The present study provides the first in-depth comparison of different techniques commonly used to quantify microglial/macrophage reactions in the pathological spinal cord. Individuals from the same and different laboratories applied techniques of digital image analysis (DIA), standard cell profile counting and a computer-assisted cell counting method with unbiased sampling to quantify macrophages in focal inflammatory lesions, disseminated lesions caused by autoimmune inflammation or at sites of spinal trauma. Our goal was to find a simple, rapid and sensitive method with minimal variability between trials and users. DIA was consistently the least variable and most time-efficient method for assessing the magnitude of macrophage responses across lesions and between users. When used to evaluate the efficacy of an anti-inflammatory treatment, DIA was 5-35 x faster than cell counting and was sensitive enough to detect group differences while eliminating inter-user variability. Since lesions are clearly defined and single profiles of microglia/macrophages are difficult to discern in most pathological specimens of brain or spinal cord, DIA offers significant advantages over other techniques for quantifying activated macrophages.
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Affiliation(s)
- Dustin J Donnelly
- The Integrated Biomedical Graduate Studies Program, The Ohio State University College of Medicine, Columbus, OH, USA
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26
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Noorbakhsh F, Overall CM, Power C. Deciphering complex mechanisms in neurodegenerative diseases: the advent of systems biology. Trends Neurosci 2009; 32:88-100. [DOI: 10.1016/j.tins.2008.10.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Revised: 10/08/2008] [Accepted: 10/08/2008] [Indexed: 11/28/2022]
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27
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Tsutsui S, Hahn JN, Johnson TA, Ali Z, Jirik FR. Absence of the cellular prion protein exacerbates and prolongs neuroinflammation in experimental autoimmune encephalomyelitis. THE AMERICAN JOURNAL OF PATHOLOGY 2008; 173:1029-41. [PMID: 18815152 DOI: 10.2353/ajpath.2008.071062] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Although the physiological roles of the cellular prion protein (PrP C) remain to be fully elucidated, PrP C has been proposed to represent a potential regulator of cellular immunity. To test this hypothesis, we evaluated the consequences of PrP C deficiency on the course of experimental autoimmune encephalomyelitis induced by immunization with myelin oligodendrocyte glycoprotein peptide. Consistent with augmented proliferative responses and increased cytokine gene expression by myelin oligodendrocyte glycoprotein-primed Prnp-/- T cells, PrP C-deficient mice demonstrated more aggressive disease onset and a lack of clinical improvement during the chronic phase of experimental autoimmune encephalomyelitis. Acutely, Prnp-/- spinal cord, cerebellum, and forebrain exhibited higher levels of leukocytic infiltrates and pro-inflammatory cytokine gene expression, as well as increased spinal cord myelin basic protein and axonal loss. During the chronic phase, a remarkable persistence of leukocytic infiltrates was present in the forebrain and cerebellum, accompanied by an increase in interferon-gamma and interleukin-17 transcripts. Attenuation of T cell-dependent neuroinflammation thus represents a potential novel function of PrP C.
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Affiliation(s)
- Shigeki Tsutsui
- Department of Biochemistry and Molecular Biology, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada
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28
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Kalantari P, Harandi OF, Hankey PA, Henderson AJ. HIV-1 Tat mediates degradation of RON receptor tyrosine kinase, a regulator of inflammation. THE JOURNAL OF IMMUNOLOGY 2008; 181:1548-55. [PMID: 18606710 DOI: 10.4049/jimmunol.181.2.1548] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
HIV encodes several proteins, including Tat, that have been demonstrated to modulate the expression of receptors critical for innate immunity, including MHC class I, mannose receptor, and beta(2)-microglobulin. We demonstrate that Tat targets the receptor tyrosine kinase recepteur d'origine nantais (RON), which negatively regulates inflammation and HIV transcription, for proteosome degradation. Tat decreases cell surface RON expression in HIV-infected monocytic cells, and Tat-mediated degradation of RON protein is blocked by inhibitors of proteosome activity. Tat specifically induced down-regulation of RON and not other cell surface receptors, such as the transferrin receptor, the receptor tyrosine kinase TrkA, or monocytic markers CD14 and ICAM-1. The Tat trans activation domain is required for RON degradation, and this down-regulation is dependent on the integrity of the kinase domain of RON receptor. We propose that Tat mediates degradation of RON through a ubiquitin-proteosome pathway, and suggest that by targeting signals that modulate inflammation, Tat creates a microenvironment that is optimal for HIV replication and progression of AIDS-associated diseases.
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Affiliation(s)
- Parisa Kalantari
- Graduate Program in Pathobiology, Center for Molecular Immunology and Infectious Diseases, Pennsylvania State University, PA 16802, USA
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29
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Klatt A, Zhang Z, Kalantari P, Hankey PA, Gilmour DS, Henderson AJ. The receptor tyrosine kinase RON represses HIV-1 transcription by targeting RNA polymerase II processivity. THE JOURNAL OF IMMUNOLOGY 2008; 180:1670-7. [PMID: 18209063 DOI: 10.4049/jimmunol.180.3.1670] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Efficient HIV-1 transcription requires the induction of cellular transcription factors, such as NF-kappaB, and the viral factor Tat, which through the recruitment of P-TEFb enhances processive transcription. However, whether cellular signals repress HIV-1 transcription to establish proviral latency has not been well studied. Previously, it has been shown that the receptor tyrosine kinase RON inhibits HIV transcription. To gain insights into the biochemical mechanisms by which RON inhibits transcription we examined the binding of transcription factors to the HIV provirus long terminal repeat using chromatin immunoprecipitation. RON expression decreased basal levels of NF-kappaB and RNA polymerase II (Pol II) binding to the HIV provirus long terminal repeat but did not prevent the induction of these complexes following treatment with cytokines. However, RON did decrease efficient transcription elongation because reduced RNA Pol II was associated with HIV-1 genomic sequences downstream of the transcriptional start site. There was a correlation between RON expression and increased binding of factors that negatively regulate transcription elongation, NELF, Spt5, and Pcf11. Furthermore, the ability of RON to inhibit HIV-1 transcription was sensitive to a histone deacetylase inhibitor and was associated with nucleosome remodeling. These results indicate that RON represses HIV transcription at multiple transcriptional check points including initiation, elongation and chromatin organization and are the first studies to show that cellular signaling pathways target Pol II pausing to repress gene expression.
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Affiliation(s)
- Alicia Klatt
- Center of Molecular Immunology and Infectious Diseases, Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA
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30
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SUZUKI Y, FUNAKOSHI H, MACHIDE M, MATSUMOTO K, NAKAMURA T. Regulation of cell migration and cytokine production by HGF-like protein (HLP) / macrophage stimulating protein (MSP) in primary microglia. Biomed Res 2008; 29:77-84. [DOI: 10.2220/biomedres.29.77] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Elkabes S, Li H. Proteomic strategies in multiple sclerosis and its animal models. Proteomics Clin Appl 2007; 1:1393-1405. [PMID: 19759847 DOI: 10.1002/prca.200700315] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The early and precise diagnosis, the prognosis, and the clinical management of multiple sclerosis, remain a considerable challenge. In recent years, the development of novel and powerful proteomic techniques prompted the use of these approaches for the search of unique biomarkers in the cerebrospinal fluid of multiple sclerosis patients. A few studies have also utilized proteomics to delineate the profile of differentially expressed proteins in animal models of the human disease in order to gain global insights into affected pathways. The identification of differentially expressed proteins may be an initial step in the discovery of novel targets and mechanisms that play critical roles in the pathology of multiple sclerosis. Based on these findings, future investigations may elucidate the events leading to demyelination, axonal damage, and neurodegeneration, providing better insights into mechanisms governing the onset and progression of the disease. Although these proteomic studies provide valuable information, they are also faced with a number of challenges. The present review discusses some of the strengths and limitations of proteomic investigations as applied to multiple sclerosis.
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Affiliation(s)
- Stella Elkabes
- Department of Neurology and Neuroscience, New Jersey Medical School-UMDNJ, Newark, NJ, USA
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32
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Tsutsui S, Vergote D, Shariat N, Warren K, Ferguson SSG, Power C. Glucocorticoids regulate innate immunity in a model of multiple sclerosis: reciprocal interactions between the A1 adenosine receptor and beta-arrestin-1 in monocytoid cells. FASEB J 2007; 22:786-96. [PMID: 17965263 DOI: 10.1096/fj.07-9002com] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Desensitization of seven transmembrane receptors (7TMRs), which are modulated by the beta-arrestins, leads to altered G protein activation. The A1 adenosine receptor (A1AR) is an antiinflammatory 7TMR exhibiting reduced expression and activity in both multiple sclerosis (MS) and the murine MS model, experimental autoimmune encephalomyelitis (EAE) in monocytoid cells. Herein, we report that beta-arrestin-1 expression was increased in brains of MS patients relative to non-MS brains, whereas A1AR expression was concomitantly reduced. This inverse relationship between beta-arrestin-1 and A1AR was confirmed in cultured monocytoid cells as beta-arrestin-1 overexpression resulted in a down-regulation of A1AR together with the internalization of the surface receptor. Moreover, a physical interaction between beta-arrestin-1 and A1AR was demonstrated in monocytoid cells. Proinflammatory cytokines regulated the A1AR/beta-arrestin-1 interactions, while A1AR activation also modulated proinflammatory cytokines expression. During EAE, beta-arrestin-1 and A1AR expression in the spinal cord displayed a similar pattern compared to that observed in MS brains. EAE-induced neuroinflammation and neurobehavioral deficits were suppressed by glucocorticoid treatments, accompanied by concurrent reduced beta-arrestin-1 and enhanced A1AR expression. Thus, the interplay between beta-arrestin-1 and A1AR in the central nervous system during neuroinflammation represents a reciprocal regulatory mechanism through which neuroprotective therapeutic strategies for neuroinflammatory diseases might be further developed.
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Affiliation(s)
- Shigeki Tsutsui
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
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33
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Swaminathan G, Tsygankov AY. The Cbl family proteins: ring leaders in regulation of cell signaling. J Cell Physiol 2006; 209:21-43. [PMID: 16741904 DOI: 10.1002/jcp.20694] [Citation(s) in RCA: 228] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The proto-oncogenic protein c-Cbl was discovered as the cellular form of v-Cbl, a retroviral transforming protein. This was followed over the years by important discoveries, which identified c-Cbl and other Cbl-family proteins as key players in several signaling pathways. c-Cbl has donned the role of a multivalent adaptor protein, capable of interacting with a plethora of proteins, and has been shown to positively influence certain biological processes. The identity of c-Cbl as an E3 ubiquitin ligase unveiled the existence of an important negative regulatory pathway involved in maintaining homeostasis in protein tyrosine kinase (PTK) signaling. Recent years have also seen the emergence of novel regulators of Cbl, which have provided further insights into the complexity of Cbl-influenced pathways. This review will endeavor to provide a summary of current studies focused on the effects of Cbl proteins on various biological processes and the mechanism of these effects. The major sections of the review are as follows: Structure and genomic organization of Cbl proteins; Phosphorylation of Cbl; Interactions of Cbl; Localization of Cbl; Mechanism of effects of Cbl: (a) Ubiquitylation-dependent events: This section elucidates the mechanism of Cbl-mediated downregulation of EGFR and details the PTK and non-PTKs targeted by Cbl. In addition, it addresses the functional requirements for E3 Ubiquitin ligase activity of Cbl and negative regulation of Cbl-mediated downregulation of PTKs, (b) Adaptor functions: This section discusses the mechanisms of adaptor functions of Cbl in mitogen-activated protein kinase (MAPK) activation, insulin signaling, regulation of Ras-related protein 1 (Rap1), PI-3' kinase signaling, and regulation of Rho-family GTPases and cytoskeleton; Biological functions: This section gives an account of the diverse biological functions of Cbl and includes the role of Cbl in transformation, T-cell signaling and thymus development, B-cell signaling, mast-cell degranulation, macrophage functions, bone development, neurite growth, platelet activation, muscle degeneration, and bacterial invasion; Conclusions and perspectives.
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Affiliation(s)
- Gayathri Swaminathan
- Department of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, Pennsylvania, USA
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34
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Noorbakhsh F, Tsutsui S, Vergnolle N, Boven LA, Shariat N, Vodjgani M, Warren KG, Andrade-Gordon P, Hollenberg MD, Power C. Proteinase-activated receptor 2 modulates neuroinflammation in experimental autoimmune encephalomyelitis and multiple sclerosis. ACTA ACUST UNITED AC 2006; 203:425-35. [PMID: 16476770 PMCID: PMC2118197 DOI: 10.1084/jem.20052148] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The proteinase-activated receptors (PARs) are widely recognized for their modulatory properties of inflammation and neurodegeneration. We investigated the role of PAR2 in the pathogenesis of multiple sclerosis (MS) in humans and experimental autoimmune encephalomyelitis (EAE) in mice. PAR2 expression was increased on astrocytes and infiltrating macrophages in human MS and murine EAE central nervous system (CNS) white matter (P < 0.05). Macrophages and astrocytes from PAR2 wild-type (WT) and knockout (KO) mice exhibited differential immune gene expression with PAR2 KO macrophages showing significantly higher interleukin 10 production after lipopolysaccharide stimulation (P < 0.001). PAR2 activation in macrophages resulted in the release of soluble oligodendrocyte cytotoxins (P < 0.01). Myelin oligodendrocyte glycoprotein-induced EAE caused more severe inflammatory gene expression in the CNS of PAR2 WT animals (P < 0.05), together with enhanced T cell proliferation and interferon gamma production (P < 0.05), compared with KO littermates. Indeed, PAR2 WT animals showed markedly greater microglial activation and T lymphocyte infiltration accompanied by worsened demyelination and axonal injury in the CNS compared with their PAR2 KO littermates. Enhanced neuropathological changes were associated with a more severe progressive relapsing disease phenotype (P < 0.001) in WT animals. These findings reveal previously unreported pathogenic interactions between CNS PAR2 expression and neuroinflammation with ensuing demyelination and axonal injury.
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MESH Headings
- Animals
- Astrocytes/metabolism
- Astrocytes/pathology
- Cell Proliferation
- Cells, Cultured
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Female
- Frontal Lobe/metabolism
- Frontal Lobe/pathology
- Gene Expression Regulation/immunology
- Humans
- Inflammation/genetics
- Inflammation/metabolism
- Interferon-gamma/biosynthesis
- Macrophages/metabolism
- Macrophages/pathology
- Male
- Mice
- Mice, Knockout
- Middle Aged
- Multiple Sclerosis/immunology
- Multiple Sclerosis/metabolism
- Multiple Sclerosis/pathology
- Oligodendroglia/metabolism
- Oligodendroglia/pathology
- Receptor, PAR-2/deficiency
- Receptor, PAR-2/genetics
- Receptor, PAR-2/physiology
- T-Lymphocytes/metabolism
- T-Lymphocytes/pathology
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Affiliation(s)
- Farshid Noorbakhsh
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
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35
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Thien C, Langdon W. c-Cbl and Cbl-b ubiquitin ligases: substrate diversity and the negative regulation of signalling responses. Biochem J 2006; 391:153-66. [PMID: 16212556 PMCID: PMC1276912 DOI: 10.1042/bj20050892] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The activation of signalling pathways by ligand engagement with transmembrane receptors is responsible for determining many aspects of cellular function and fate. While these outcomes are initially determined by the nature of the ligand and its receptor, it is also essential that intracellular enzymes, adaptor proteins and transcription factors are correctly assembled to convey the intended response. In recent years, it has become evident that proteins that regulate the amplitude and duration of these signalling responses are also critical in determining the function and fate of cells. Of these, the Cbl family of E3 ubiquitin ligases and adaptor proteins has emerged as key negative regulators of signals from many types of cell-surface receptors. The array of receptors and downstream signalling proteins that are regulated by Cbl proteins is diverse; however, in most cases, the receptors have a common link in that they either possess a tyrosine kinase domain or they form associations with cytoplasmic PTKs (protein tyrosine kinases). Thus Cbl proteins become involved in signalling responses at a time when PTKs are first activated and therefore provide an initial line of defence to ensure that signalling responses proceed at the desired intensity and duration.
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Affiliation(s)
- Christine B. F. Thien
- School of Surgery and Pathology, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
- Correspondence may be addressed to either author (email or )
| | - Wallace Y. Langdon
- School of Surgery and Pathology, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
- Correspondence may be addressed to either author (email or )
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