1
|
Qin Y, Wan W, Li J, Wang Z, Yang Y, Li J, Ma H, Yu Z, Xiang Z, Zhang Y. A novel Fas ligand plays an important role in cell apoptosis of Crassostrea hongkongensis: molecular cloning, expression profiles and functional identification of ChFasL. Front Immunol 2023; 14:1267772. [PMID: 37868973 PMCID: PMC10585096 DOI: 10.3389/fimmu.2023.1267772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/06/2023] [Indexed: 10/24/2023] Open
Abstract
Background Apoptosis regulates normal development, homeostasis, immune tolerance and response to environmental stress by eliminating unwanted or diseased cells, and plays a key role in non-specific immunity of invertebrates. The exogenous pathway mediated by death receptors and death ligands is a very important pathway for cell apoptosis. Death ligands are mainly members of the tumour necrosis factor (TNF) family, of which FasL is an important member. The deep involvement of FasL in vertebrates cell apoptosis and immunity has been reported many times, but there is limited research on the FasL gene in shellfish, and its functional importance in oyster cell apoptosis and immunity remains unclear. Methods The full length of ChFasL was identified and cloned based on the genome of Crassostrea hongkongensis. Quantitative PCR was used to detect the relative expression of ChFasL in different developmental stages and tissues, as well as the changes of relative expression in hemocytes after bacterial infection. The expression position of ChFasL in HEK293T cells was also located by subcellular localization, and the effect of increased recombinant protein content on the activity of reporter genes p53 and p21 was studied by dual-fluorescence reporter gene. Finally, the changes of apoptosis rate in hemocytes after ChFasL silencing was identified by RNA interference technology. Results We identified a novel FasL gene from C. hongkongensis and named it ChFasL. We found that ChFasL has potential N-linked glycosylation site, a transmembrane domain and a TNF region, which was a typical characteristics of TNF family. ChFasL was expressed in all developmental stages of larvae and in all tissues of oysters. After stimulation by V. alginolyticus or S. haemolyticus, its relative expression in hemocytes increased significantly, suggesting that ChFasL was deeply engaged in the immune response process of C. hongkongensis to external microbial stimulation. The results of subcellular localization showed that ChFasL was mainly distributed in the cytoplasm of HEK293T cells. With the overexpression of the recombinant protein pcDNA3 1- ChFasL, the activity of p53 and p21 significantly increased, showing a positive regulatory effect. Moreover, after dsRNA successfully reduced the relative expression of ChFasL, the apoptosis rate of hemocytes was significantly lower than that the dsGFP group. Conclusion These results comprehensively confirmed the important role of ChFasL in the apoptosis process of C. hongkongensis, which provided the basis and premise for the in-depth understanding of the immune function of apoptosis in molluscs, and also contributed to the research on the pathogenic death mechanism and disease resistance breeding of marine bivalves.
Collapse
Affiliation(s)
- Yanping Qin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Weitao Wan
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jiangwei Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Zhongyu Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yue Yang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Jun Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Haitao Ma
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Ziniu Yu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhiming Xiang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuehuan Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
2
|
Wang H, Wang X, Li T, Lai D, Zhang YD. Adverse effect signature extraction and prediction for drugs treating COVID-19. Front Genet 2022; 13:1019940. [DOI: 10.3389/fgene.2022.1019940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022] Open
Abstract
Given the considerable cost of drug discovery, drug repurposing is becoming attractive as it can effectively shorten the development timeline and reduce the development cost. However, most existing drug-repurposing methods omitted the heterogeneous health conditions of different COVID-19 patients. In this study, we evaluated the adverse effect (AE) profiles of 106 COVID-19 drugs. We extracted four AE signatures to characterize the AE distribution of 106 COVID-19 drugs by non-negative matrix factorization (NMF). By integrating the information from four distinct databases (AE, bioassay, chemical structure, and gene expression information), we predicted the AE profiles of 91 drugs with inadequate AE feedback. For each of the drug clusters, discriminant genes accounting for mechanisms of different AE signatures were identified by sparse linear discriminant analysis. Our findings can be divided into three parts. First, drugs abundant with AE-signature 1 (for example, remdesivir) should be taken with caution for patients with poor liver, renal, or cardiac functions, where the functional genes accumulate in the RHO GTPases Activate NADPH Oxidases pathway. Second, drugs featuring AE-signature 2 (for example, hydroxychloroquine) are unsuitable for patients with vascular disorders, with relevant genes enriched in signal transduction pathways. Third, drugs characterized by AE signatures 3 and 4 have relatively mild AEs. Our study showed that NMF and network-based frameworks contribute to more precise drug recommendations.
Collapse
|
3
|
Delivering siRNA Compounds During HOPE to Modulate Organ Function: A Proof-of-Concept Study in a Rat Liver Transplant Model. Transplantation 2022; 106:1565-1576. [PMID: 35581683 DOI: 10.1097/tp.0000000000004175] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Apoptosis contributes to the severity of ischemia-reperfusion injury (IRI), limiting the use of extended criteria donors in liver transplantation (LT). Machine perfusion has been proposed as a platform to administer specific therapies to improve graft function. Alternatively, the inhibition of genes associated with apoptosis during machine perfusion could alleviate IRI post-LT. The aim of the study was to investigate whether inhibition of an apoptosis-associated gene (FAS) using a small interfering RNA (siRNA) approach could alleviate IRI in a rat LT model. METHODS In 2 different experimental protocols, FASsiRNA (500 µg) was administered to rat donors 2 h before organ procurement, followed by 22 h of static cold storage, (SCS) or was added to the perfusate during 1 h of ex situ hypothermic oxygenated perfusion (HOPE) to livers previously preserved for 4 h in SCS. RESULTS Transaminase levels were significantly lower in the SCS-FASsiRNA group at 24 h post-LT. Proinflammatory cytokines (interleukin-2, C-X-C motif chemokine 10, tumor necrosis factor alpha, and interferon gamma) were significantly decreased in the SCS-FASsiRNA group, whereas the interleukin-10 anti-inflammatory cytokine was significantly increased in the HOPE-FASsiRNA group. Liver absorption of FASsiRNA after HOPE session was demonstrated by confocal microscopy; however, no statistically significant differences on the apoptotic index, necrosis levels, and FAS protein transcription between treated and untreated groups were observed. CONCLUSIONS FAS inhibition through siRNA therapy decreases the severity of IRI after LT in a SCS protocol; however the association of siRNA therapy with a HOPE perfusion model is very challenging. Future studies using better designed siRNA compounds and appropriate doses are required to prove the siRNA therapy effectiveness during liver HOPE liver perfusion.
Collapse
|
4
|
Qadir AS, Guégan JP, Ginestier C, Chaibi A, Bessede A, Charafe-Jauffret E, Macario M, Lavoué V, Rouge TDLM, Law C, Vilker J, Wang H, Stroup E, Schipma MJ, Bridgeman B, Murmann AE, Ji Z, Legembre P, Peter ME. CD95/Fas protects triple negative breast cancer from anti-tumor activity of NK cells. iScience 2021; 24:103348. [PMID: 34816102 PMCID: PMC8593563 DOI: 10.1016/j.isci.2021.103348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 10/12/2021] [Accepted: 10/22/2021] [Indexed: 11/04/2022] Open
Abstract
The apoptosis inducing receptor CD95/Fas has multiple tumorigenic activities. In different genetically engineered mouse models tumor-expressed CD95 was shown to be critical for cell growth. Using a combination of immune-deficient and immune-competent mouse models, we now establish that loss of CD95 in metastatic triple negative breast cancer (TNBC) cells prevents tumor growth by modulating the immune landscape. CD95-deficient, but not wild-type, tumors barely grow in an immune-competent environment and show an increase in immune infiltrates into the tumor. This growth reduction is caused by infiltrating NK cells and does not involve T cells or macrophages. In contrast, in immune compromised mice CD95 k.o. cells are not growth inhibited, but they fail to form metastases. In summary, we demonstrate that in addition to its tumor and metastasis promoting activities, CD95 expression by tumor cells can exert immune suppressive activities on NK cells, providing a new target for immune therapy.
Collapse
Affiliation(s)
- Abdul S. Qadir
- Division Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | | | - Christophe Ginestier
- CRCM, Inserm, CNRS, Institut Paoli-Calmettes, Aix-Marseille Univ, Epithelial Stem Cells and Cancer Lab, Equipe labellisée LIGUE contre le cancer, Marseille, France
| | - Assia Chaibi
- Explicyte, Cours de l’Argonne, 33000 Bordeaux, France
| | - Alban Bessede
- Explicyte, Cours de l’Argonne, 33000 Bordeaux, France
| | - Emmanuelle Charafe-Jauffret
- CRCM, Inserm, CNRS, Institut Paoli-Calmettes, Aix-Marseille Univ, Epithelial Stem Cells and Cancer Lab, Equipe labellisée LIGUE contre le cancer, Marseille, France
| | - Manon Macario
- CRCM, Inserm, CNRS, Institut Paoli-Calmettes, Aix-Marseille Univ, Epithelial Stem Cells and Cancer Lab, Equipe labellisée LIGUE contre le cancer, Marseille, France
| | - Vincent Lavoué
- Department of Gynecology, University Hospital of Rennes, Rennes, France
| | | | - Calvin Law
- Division Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Jacob Vilker
- Division Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Hongbin Wang
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Emily Stroup
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Matthew J. Schipma
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Bryan Bridgeman
- Division Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Andrea E. Murmann
- Division Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Zhe Ji
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, IL, USA
| | | | - Marcus E. Peter
- Division Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| |
Collapse
|
5
|
Cytokines and apoptosis in atopic dermatitis. Postepy Dermatol Alergol 2021; 38:1-13. [PMID: 34408560 PMCID: PMC8362769 DOI: 10.5114/ada.2019.88394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/29/2019] [Indexed: 02/06/2023] Open
Abstract
Atopic dermatitis (AD) is the most common chronic inflammatory skin disease. AD affects 10-20% of children worldwide and persists into adulthood in a minority of cases, affecting approximately 2-3% of the adult population, with an increased prevalence over the past decades in developed countries. Atopy is a genetic tendency to overproduce IgE class antibodies in response to common antigens found in the environment. Concurrence of different atopy such as allergic rhinitis or asthma in children with AD is estimated at 80%. AD is characterized by a vicious cycle of an allergic immune response. The emerging picture of the AD is a complex disorder with barrier dysfunction, immunological, genetic and environmental factors all playing key roles. Patients with severe or persistent disease and their families experience significant impairment in their quality of life, and in addition, AD places a heavy economic burden on society as a whole. Pathogenesis, the role of the epidermal barrier, mechanisms of cells apoptosis, the role of T cells and cytokines in AD are discussed in this article.
Collapse
|
6
|
Mohr A, Chu T, Clarkson CT, Brooke GN, Teif VB, Zwacka RM. Fas-threshold signalling in MSCs promotes pancreatic cancer progression and metastasis. Cancer Lett 2021; 519:63-77. [PMID: 34171406 DOI: 10.1016/j.canlet.2021.06.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/13/2021] [Accepted: 06/16/2021] [Indexed: 12/12/2022]
Abstract
Mesenchymal stem cells (MSCs) belong to the tumour microenvironment and have been implicated in tumour progression. We found that the number of MSCs significantly increased in tumour-burdened mice driven by Fas-threshold signalling. Consequently, MSCs lacking Fas lost their ability to induce metastasis development in a pancreatic cancer model. Mixing of MSCs with pancreatic cancer cells led to sustained production of the pro-metastatic cytokines CCL2 and IL6 by the stem cells. The levels of these cytokines were dependent on the number of MSCs, linking Fas-mediated MSC-proliferation to their capacity to promote tumour progression. Furthermore, we discovered that CCL2 and IL6 were induced by pancreatic cancer cell-derived IL1. Importantly, analysis of patient transcriptomic data revealed that high FasL expression correlates with high levels of MSC markers as well as increased IL6 and CCL2 levels in pancreatic tumours. Moreover, both FasL and CCL2 are linked to elevated levels of markers specific for monocytes known to possess further pro-metastatic activities. These results confirm our experimental findings of a FasL-MSC-IL1-CCL2/IL6 axis in pancreatic cancer and highlights the role of MSCs in tumour progression.
Collapse
Affiliation(s)
- Andrea Mohr
- School of Life Sciences, Protein Structure and Mechanism of Disease Group, Cancer and Stem Cell Biology Laboratory, University of Essex, Colchester, CO4 3SQ, UK.
| | - Tianyuan Chu
- School of Life Sciences, Protein Structure and Mechanism of Disease Group, Cancer and Stem Cell Biology Laboratory, University of Essex, Colchester, CO4 3SQ, UK
| | - Christopher T Clarkson
- School of Life Sciences, Genomics and Computational Biology Group, Gene Regulation Laboratory, University of Essex, Colchester, CO4 3SQ, UK
| | - Greg N Brooke
- School of Life Sciences, Protein Structure and Mechanism of Disease Group, Molecular Oncology Laboratory, University of Essex, Colchester, CO4 3SQ, UK
| | - Vladimir B Teif
- School of Life Sciences, Genomics and Computational Biology Group, Gene Regulation Laboratory, University of Essex, Colchester, CO4 3SQ, UK
| | - Ralf M Zwacka
- School of Life Sciences, Protein Structure and Mechanism of Disease Group, Cancer and Stem Cell Biology Laboratory, University of Essex, Colchester, CO4 3SQ, UK.
| |
Collapse
|
7
|
Johnson C, Drummer IV C, Shan H, Shao Y, Sun Y, Lu Y, Saaoud F, Xu K, Nanayakkara G, Fang P, Bagi Z, Jiang X, Choi ET, Wang H, Yang X. A Novel Subset of CD95 + Pro-Inflammatory Macrophages Overcome miR155 Deficiency and May Serve as a Switch From Metabolically Healthy Obesity to Metabolically Unhealthy Obesity. Front Immunol 2021; 11:619951. [PMID: 33488632 PMCID: PMC7817616 DOI: 10.3389/fimmu.2020.619951] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 11/20/2020] [Indexed: 12/11/2022] Open
Abstract
Metabolically healthy obesity (MHO) accounts for roughly 35% of all obese patients. There is no clear consensus that has been reached on whether MHO is a stable condition or merely a transitory period between metabolically healthy lean and metabolically unhealthy obesity (MUO). Additionally, the mechanisms underlying MHO and any transition to MUO are not clear. Macrophages are the most common immune cells in adipose tissues and have a significant presence in atherosclerosis. Fas (or CD95), which is highly expressed on macrophages, is classically recognized as a pro-apoptotic cell surface receptor. However, Fas also plays a significant role as a pro-inflammatory molecule. Previously, we established a mouse model (ApoE-/-/miR155-/-; DKO mouse) of MHO, based on the criteria of not having metabolic syndrome (MetS) and insulin resistance (IR). In our current study, we hypothesized that MHO is a transition phase toward MUO, and that inflammation driven by our newly classified CD95+CD86- macrophages is a novel mechanism for this transition. We found that, with extended (24 weeks) high-fat diet feeding (HFD), MHO mice became MUO, shown by increased atherosclerosis. Mechanistically, we found the following: 1) at the MHO stage, DKO mice exhibited increased pro-inflammatory markers in adipose tissue, including CD95, and serum; 2) total adipose tissue macrophages (ATMs) increased; 3) CD95+CD86- subset of ATMs also increased; and 4) human aortic endothelial cells (HAECs) were activated (as determined by upregulated ICAM1 expression) when incubated with conditioned media from CD95+-containing DKO ATMs and human peripheral blood mononuclear cells-derived macrophages in comparison to respective controls. These results suggest that extended HFD in MHO mice promotes vascular inflammation and atherosclerosis via increasing CD95+ pro-inflammatory ATMs. In conclusion, we have identified a novel molecular mechanism underlying MHO transition to MUO with HFD. We have also found a previously unappreciated role of CD95+ macrophages as a potentially novel subset that may be utilized to assess pro-inflammatory characteristics of macrophages, specifically in adipose tissue in the absence of pro-inflammatory miR-155. These findings have provided novel insights on MHO transition to MUO and new therapeutic targets for the future treatment of MUO, MetS, other obese diseases, and type II diabetes.
Collapse
MESH Headings
- Adipose Tissue, White/metabolism
- Adipose Tissue, White/pathology
- Animals
- Aorta
- Aortic Diseases/etiology
- Atherosclerosis/etiology
- B7-2 Antigen/analysis
- Cells, Cultured
- Culture Media, Conditioned/pharmacology
- Diet, High-Fat/adverse effects
- Disease Progression
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Female
- Humans
- Inflammation/complications
- Inflammation/immunology
- Intercellular Adhesion Molecule-1/biosynthesis
- Macrophages/chemistry
- Macrophages/classification
- Macrophages/physiology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout, ApoE
- MicroRNAs/physiology
- Obesity, Metabolically Benign/immunology
- Obesity, Metabolically Benign/metabolism
- Obesity, Metabolically Benign/pathology
- Vasculitis/etiology
- fas Receptor/analysis
Collapse
Affiliation(s)
- Candice Johnson
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Charles Drummer IV
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Huimin Shan
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
- Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Ying Shao
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Yu Sun
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Yifan Lu
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Fatma Saaoud
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Keman Xu
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Gayani Nanayakkara
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Pu Fang
- Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Zsolt Bagi
- Vascular Biology Center, Augusta University, Augusta, GA, United States
| | - Xiaohua Jiang
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
- Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Eric T. Choi
- Division of Vascular and Endovascular Surgery, Department of Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Hong Wang
- Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
- Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Xiaofeng Yang
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
- Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
- Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
- Centers for Inflammation, Translational and Clinical Lung Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| |
Collapse
|
8
|
Zhao S, Xu W, Tu B, Hong WG, Zhang Z, Chen WW, Zhao M. Alterations of the frequency and functions of follicular regulatory T cells and related mechanisms in HIV infection. J Infect 2020; 81:776-784. [PMID: 32956725 DOI: 10.1016/j.jinf.2020.09.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 01/13/2023]
Abstract
Human immunodeficiency virus (HIV) infection impairs both cellular and humoral immune system. Follicular regulatory T (Tfr) cells are a recently characterised subset of CD4+T cells. Tfr also exerts an immunosuppressive effect on humoral immune system through interaction with follicular helper T (Tfh) cells, but the role of Tfr in HIV infection needs to be further elucidated. 20 treatment-naïve and 20 antiretroviral therapy (ART)-treated HIV-infected individuals were enrolled for cross-sectional study and nine complete responders (CRs) and eight immune non-responders (INRs) after ART were collected for retrospective cohort study. Tfr phenotypes, cytokine secretions, and apoptosis of those subjects were evaluated by flow cytometry. HIV DNA was measured by reverse transcription-quantitative PCR (RT-qPCR). Significantly increased circulating Tfr was observed in chronic HIV+ patients and the imbalance between Tfr and Tfh17 was associated with CD4+T counts. In addition, an elevated proportion of Tfr was associated with immune reconstruction failure of patients after ART. The IL-10 and CTLA-4 expressions of Tfr cells were up-regulated in treatment-naïve HIV+ patients. Ex vivo experiments showed IL-10 and CTLA-4 expressed by Tfr inhibited IL-21 secretion of Tfh. Tfr harboured a comparable HIV-1 DNA level with Tfh in HIV+ patients. Compared to Tfr of HCs, Tfr cells of HIV+ patients were more insensitive to CD95 and IFN-α induced apoptosis, had a higher proliferation rate, and had more stem-like T cell (Tscm) phenotype. The anti-apoptosis feature, higher proliferation rate, and Tscm-like features of Tfr in HIV+ patients, led to the expansion of Tfr which in turn resulted in dysfunction of Tfh. Tfr cells were also involved in immune reconstruction failure and latent infection of HIV. Tfr cells were a novel, and potentially therapeutic, target for the cure of HIV infection, especially for HIV vaccine development and HIV reservoir elimination.
Collapse
Affiliation(s)
- Shuang Zhao
- Department of Infectious Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wen Xu
- Treatment and Research Center for Infectious Disease, The Fifth Medical Center of PLA General Hospital, NO. 100, Xisihuan Road, FengTai District, Beijing 100039, China
| | - Bo Tu
- Treatment and Research Center for Infectious Disease, The Fifth Medical Center of PLA General Hospital, NO. 100, Xisihuan Road, FengTai District, Beijing 100039, China
| | - Wei-Guo Hong
- Treatment and Research Center for Infectious Disease, The Fifth Medical Center of PLA General Hospital, NO. 100, Xisihuan Road, FengTai District, Beijing 100039, China
| | - Zheng Zhang
- Treatment and Research Center for Infectious Disease, The Fifth Medical Center of PLA General Hospital, NO. 100, Xisihuan Road, FengTai District, Beijing 100039, China; Institute of Hepatology, Shenzhen 3rd People's Hospital, NO. 29, Bulan Road, Shenzhen City, Guangdong 518100, China.
| | - Wei-Wei Chen
- Treatment and Research Center for Infectious Disease, The Fifth Medical Center of PLA General Hospital, NO. 100, Xisihuan Road, FengTai District, Beijing 100039, China.
| | - Min Zhao
- Treatment and Research Center for Infectious Disease, The Fifth Medical Center of PLA General Hospital, NO. 100, Xisihuan Road, FengTai District, Beijing 100039, China.
| |
Collapse
|
9
|
Svandova E, Sadoine J, Vesela B, Djoudi A, Lesot H, Poliard A, Matalova E. Growth-dependent phenotype in FasL-deficient mandibular/alveolar bone. J Anat 2019; 235:256-261. [PMID: 31148178 DOI: 10.1111/joa.13015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2019] [Indexed: 12/29/2022] Open
Abstract
FASL (CD178) is known for its role in triggering apoptosis, mostly in relation with immune cells but additional functions have been reported more recently, including those in bone development. Examination of postnatal FasL-deficient mice (gld) showed an increased bone deposition in adult mice when compared with wild types. However, a different phenotype was observed prenatally, when the gld bone was underdeveloped. The aim of the following investigation was to evaluate this indication for an growth-dependent bone phenotype of gld mice and to search for the 'switch point'. This study focused on the mandibular/alveolar bone as an important structure for tooth anchorage. In vivo micro-computed tomography (CT) analysis was performed at different stages during the first month (6, 12 and 24 days) of postnatal bone development. In 6-day-old gld mice, a decrease in bone volume/tissue volume (BV/TV), trabecular thickness and trabecular number was revealed. In contrast, the 12-day-old gld mice showed an increased BV/TV and trabecular thickness in the alveolar bone. The same observation applied for bone status in 24-day-old gld mice. Therefore, changes in the bone phenotype occurred between day 6 and 12 of the postnatal development. The switch point is likely related to the changing proportion of bone cells at these stages of development, when the number of osteocytes increases. Indeed, the immunohistochemical analysis of FASL localized this protein in osteoblasts, whereas osteocytes were mostly negative at examined stages. The impact of FASL particularly on osteoblasts would agree with an earlier in vivo observed effect of FASL deficiency on expression of Mmp2, typical for osteoblasts, in the gld mandibular/alveolar bone. Notably, an age-dependent bone phenotype was reported in Mmp2-deficient mice.
Collapse
Affiliation(s)
- Eva Svandova
- Department of Physiology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic.,Institute of Animal Physiology and Genetics, Academy of Sciences, Brno, Czech Republic
| | - Jeremy Sadoine
- Laboratory of Orofacial Pathologies, Imaging and Biotherapies, Université Paris Descartes, Paris, France
| | - Barbora Vesela
- Department of Physiology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic.,Institute of Animal Physiology and Genetics, Academy of Sciences, Brno, Czech Republic
| | - Amina Djoudi
- Laboratory of Orofacial Pathologies, Imaging and Biotherapies, Université Paris Descartes, Paris, France
| | - Herve Lesot
- Institute of Animal Physiology and Genetics, Academy of Sciences, Brno, Czech Republic
| | - Anne Poliard
- Laboratory of Orofacial Pathologies, Imaging and Biotherapies, Université Paris Descartes, Paris, France
| | - Eva Matalova
- Department of Physiology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic.,Institute of Animal Physiology and Genetics, Academy of Sciences, Brno, Czech Republic
| |
Collapse
|
10
|
Grzanka R, Damasiewicz-Bodzek A, Kasperska-Zajac A. Tumor necrosis factor-alpha and Fas/Fas ligand signaling pathways in chronic spontaneous urticaria. Allergy Asthma Clin Immunol 2019; 15:15. [PMID: 30911316 PMCID: PMC6417283 DOI: 10.1186/s13223-019-0332-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 03/06/2019] [Indexed: 01/24/2023] Open
Abstract
Background There is increasing evidence pointing to the important role of tumor necrosis factor-alpha (TNF-α), a key inflammatory and apoptotic mediator in urticarial inflammation. However, the role of the TNF-α system and Fas/Fas ligand (FasL) in the apoptosis-inducing pathways in chronic spontaneous urticaria (CSU), remain unclear. Aim To determine circulating concentrations of TNF-α, soluble TNF-α receptor type 1 and type 2 (sTNF-R1 and sTNF-R2, respectively) as well as soluble Fas (sFas) and FasL (sFasL) in CSU subjects. Methods Serum TNF-α, sTNF-R1, sTNF-R2, sFas, sFasL concentrations were measured using enzyme-linked immunosorbent assay in CSU subjects and in the healthy subjects. Results TNF-α concentrations were significantly higher in CSU subjects and moderate-to-severe CSU than in the controls, while there were no significant differences in TNF-α concentrations between subjects with mild CSU and the controls. sTNF-R1 and sTNF-R2 concentrations were significantly higher in all CSU and moderate-severe CSU subjects vs. the controls. Serum concentrations were also significantly higher in mild CSU vs. the controls, but not in moderate-severe CSU vs. mild CSU. No significant differences were observed in sFas and sFasL concentrations between CSU subjects and the healthy controls. Significant correlations were found between concentrations of TNF-α and its receptors, as well as sTNF-R1 and sTNF-R2, but not with the urticaria activity score (UAS). There was no relationship between TNF-α/sTNF-R1/sTNF-R2 and sFas/sFasL pathways in CSU. Conclusions CSU is associated with the activation of the TNF-α/receptors signaling pathway, marked by increased circulating concentrations of TNF-α, sTNF-R1 and sTNF-R2, which are related to each other in this disease. In contrast, the circulating sFas/FasL system is not up-regulated in CSU, and sFas/sFasL may not be a useful marker of the activity/severity of urticarial processes. Considering the lack of significant changes in sFas/sFasL (mainly reflecting systemic apoptosis) in CSU patients, it appears that elevated serum TNF-α concentrations are related to its pro-inflammatory function rather than an enhanced systemic apoptotic response in CSU.
Collapse
Affiliation(s)
- R Grzanka
- 1Clinical Department of Internal Diseases, Dermatology and Allergology, SMDZ in Zabrze, Medical University of Silesia in Katowice, ul. M. Curie-Skłodowskiej 10, 41-800 Zabrze, Poland
| | - A Damasiewicz-Bodzek
- 2Department of Chemistry, SMDZ in Zabrze, Medical University of Silesia in Katowice, Katowice, Poland
| | - A Kasperska-Zajac
- 1Clinical Department of Internal Diseases, Dermatology and Allergology, SMDZ in Zabrze, Medical University of Silesia in Katowice, ul. M. Curie-Skłodowskiej 10, 41-800 Zabrze, Poland.,European Center for Diagnosis and Treatment of Urticaria (GA2LEN UCARE), Zabrze, Poland
| |
Collapse
|
11
|
Nitric Oxide Influences HSV-1-Induced Neuroinflammation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2302835. [PMID: 30886672 PMCID: PMC6388346 DOI: 10.1155/2019/2302835] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/14/2018] [Accepted: 11/28/2018] [Indexed: 11/29/2022]
Abstract
Herpes simplex virus type 1 (HSV-1) has the ability to replicate in neurons and glial cells and to produce encephalitis leading to neurodegeneration. Accumulated evidence suggests that nitric oxide (NO) is a key molecule in the pathogenesis of neurotropic virus infections. NO can exert both cytoprotective as well as cytotoxic effects in the central nervous system (CNS) depending on its concentration, time course exposure, and site of action. In this study, we used an in vitro model of HSV-1-infected primary neuronal and mixed glial cultures as well as an intranasal model of HSV-1 in BALB/c mice to elucidate the role of NO and nonapoptotic Fas signalling in neuroinflammation and neurodegeneration. We found that low, nontoxic concentration of NO decreased HSV-1 replication in neuronal cultures together with production of IFN-alpha and proinflammatory chemokines. However, in HSV-1-infected glial cultures, low concentrations of NO supported virus replication and production of IFN-alpha and proinflammatory chemokines. HSV-1-infected microglia downregulated Fas expression and upregulated its ligand, FasL. Fas signalling led to production of proinflammatory cytokines and chemokines as well as induced iNOS in uninfected bystander glial cells. On the contrary, NO reduced production of IFN-alpha and CXCL10 through nonapoptotic Fas signalling in HSV-1-infected neuronal cultures. Here, we also observed colocalization of NO production with the accumulation of β-amyloid peptide in HSV-1-infected neurons both in vitro and in vivo. Low levels of the NO donor increased accumulation of β-amyloid in uninfected primary neuronal cultures, while the NO inhibitor decreased its accumulation in HSV-1-infected neuronal cultures. This study shows for the first time the existence of a link between NO and Fas signalling during HSV-1-induced neuroinflammation and neurodegeneration.
Collapse
|
12
|
Mussbacher M, Salzmann M, Brostjan C, Hoesel B, Schoergenhofer C, Datler H, Hohensinner P, Basílio J, Petzelbauer P, Assinger A, Schmid JA. Cell Type-Specific Roles of NF-κB Linking Inflammation and Thrombosis. Front Immunol 2019; 10:85. [PMID: 30778349 PMCID: PMC6369217 DOI: 10.3389/fimmu.2019.00085] [Citation(s) in RCA: 368] [Impact Index Per Article: 73.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 01/11/2019] [Indexed: 12/22/2022] Open
Abstract
The transcription factor NF-κB is a central mediator of inflammation with multiple links to thrombotic processes. In this review, we focus on the role of NF-κB signaling in cell types within the vasculature and the circulation that are involved in thrombo-inflammatory processes. All these cells express NF-κB, which mediates important functions in cellular interactions, cell survival and differentiation, as well as expression of cytokines, chemokines, and coagulation factors. Even platelets, as anucleated cells, contain NF-κB family members and their corresponding signaling molecules, which are involved in platelet activation, as well as secondary feedback circuits. The response of endothelial cells to inflammation and NF-κB activation is characterized by the induction of adhesion molecules promoting binding and transmigration of leukocytes, while simultaneously increasing their thrombogenic potential. Paracrine signaling from endothelial cells activates NF-κB in vascular smooth muscle cells and causes a phenotypic switch to a “synthetic” state associated with a decrease in contractile proteins. Monocytes react to inflammatory situations with enforced expression of tissue factor and after differentiation to macrophages with altered polarization. Neutrophils respond with an extension of their life span—and upon full activation they can expel their DNA thereby forming so-called neutrophil extracellular traps (NETs), which exert antibacterial functions, but also induce a strong coagulatory response. This may cause formation of microthrombi that are important for the immobilization of pathogens, a process designated as immunothrombosis. However, deregulation of the complex cellular links between inflammation and thrombosis by unrestrained NET formation or the loss of the endothelial layer due to mechanical rupture or erosion can result in rapid activation and aggregation of platelets and the manifestation of thrombo-inflammatory diseases. Sepsis is an important example of such a disorder caused by a dysregulated host response to infection finally leading to severe coagulopathies. NF-κB is critically involved in these pathophysiological processes as it induces both inflammatory and thrombotic responses.
Collapse
Affiliation(s)
- Marion Mussbacher
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Manuel Salzmann
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Christine Brostjan
- Department of Surgery, General Hospital, Medical University of Vienna, Vienna, Austria
| | - Bastian Hoesel
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | | | - Hannes Datler
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Philipp Hohensinner
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - José Basílio
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Peter Petzelbauer
- Skin and Endothelial Research Division, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Alice Assinger
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| | - Johannes A Schmid
- Institute of Vascular Biology and Thrombosis Research, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
13
|
Szymanski L, Cios A, Lewicki S, Szymanski P, Stankiewicz W. Fas/FasL pathway and cytokines in keratinocytes in atopic dermatitis - Manipulation by the electromagnetic field. PLoS One 2018; 13:e0205103. [PMID: 30286163 PMCID: PMC6171903 DOI: 10.1371/journal.pone.0205103] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 08/05/2018] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Atopic dermatitis (AD) is one of the most frequent skin diseases. Changes of the keratinocytes functionality play a major role in the development of AD. For example, activation of the Fas (CD95)/FasL (CD178) pathway in AD does not lead to extensive apoptosis in skin. Binding of the Fas receptor to its protein ligand-FasL, which are present on the (AD)-modified keratinocytes, should result in the sequential induction of cell death, but there is no evidence of extensive apoptosis of these cells. This suggests that non-apoptotic mechanism of Fas/FasL pathway is commonly encountered, although not examined in the case of AD, phenomenon. An electromagnetic field, which was used to influence cultured cells in this study, can modulate proliferation, apoptosis, differentiation, and metabolism in various cells. OBJECTIVE Here, we evaluate the possibility to manipulate the immune activation of AD keratinocytes and their response to the electromagnetic field, which was not tested before. METHODS Keratinocytes isolated from the skin of healthy subjects (n = 20) and patients with atopic dermatitis (n = 20) as well as HaCaT and PCS-200-010 cell were exposed to the 900 MHz electromagnetic field for 60 minutes. Cytometric analysis of viability, Fas/FasL, p-ERK, p-p38 and p-JNK expression and Luminex analysis of cytokine concentration were performed in two-time points: 4 and 24 hours after the exposition. RESULTS This research has shown upregulated Fas, FasL, p-ERK, p-p38, and p-JNK expression along with increased cytokine secretion (IL-1β, IL-4, IL-8, IL-10, IL-12p70, IL-13, IL-17A, IL-31 and TNFα) by keratinocytes derived from the skin of patients with the AD when compared with healthy control. Exposure of keratinocyte cultures obtained from AD patients to EMF resulted in a decrease of 1β, IL-4, IL-10, IL-12, I L-13, IL-17, IL-31 and TNFα levels. Keratinocytes derived from the skin of AD patients are characterized by elevated Fas and FasL expression when compared to healthy control. CONCLUSION Apoptotic and nonapoptotic activation of the Fas/FasL-dependent signaling pathway may play a significant role in the pathogenesis of AD, by adjusting the local cytokine and chemokine environment at the site of inflammation. Moreover, the electromagnetic field exhibits strong immunomodulatory effects on AD-modified keratinocytes.
Collapse
Affiliation(s)
- Lukasz Szymanski
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Aleksandra Cios
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Sławomir Lewicki
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Pawel Szymanski
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Wanda Stankiewicz
- Department of Microwave Safety, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| |
Collapse
|
14
|
Fas activity mediates airway inflammation during mouse adenovirus type 1 respiratory infection. Virology 2018; 521:129-137. [PMID: 29908447 DOI: 10.1016/j.virol.2018.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/04/2018] [Accepted: 06/06/2018] [Indexed: 12/14/2022]
Abstract
CD8 T cells play a key role in clearance of mouse adenovirus type 1 (MAV-1) from the lung and contribute to virus-induced airway inflammation. We tested the hypothesis that interactions between Fas ligand (FasL) and Fas mediate the antiviral and proinflammatory effects of CD8 T cells. FasL and Fas expression were increased in the lungs of C57BL/6 (B6) mice during MAV-1 respiratory infection. Viral replication and weight loss were similar in B6 and Fas-deficient (lpr) mice. Histological evidence of pulmonary inflammation was similar in B6 and lpr mice, but lung mRNA levels and airway proinflammatory cytokine concentrations were lower in MAV-1-infected lpr mice compared to infected B6 mice. Virus-induced apoptosis in lungs was not affected by Fas deficiency. Our results suggest that the proinflammatory effects of CD8 T cells during MAV-1 infection are mediated in part by Fas activation and are distinct from CD8 T cell antiviral functions.
Collapse
|
15
|
Mande P, Zirak B, Ko WC, Taravati K, Bride KL, Brodeur TY, Deng A, Dresser K, Jiang Z, Ettinger R, Fitzgerald KA, Rosenblum MD, Harris JE, Marshak-Rothstein A. Fas ligand promotes an inducible TLR-dependent model of cutaneous lupus-like inflammation. J Clin Invest 2018; 128:2966-2978. [PMID: 29889098 PMCID: PMC6025993 DOI: 10.1172/jci98219] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 04/17/2018] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors TLR7 and TLR9 are both implicated in the activation of autoreactive B cells and other cell types associated with systemic lupus erythematosus (SLE) pathogenesis. However, Tlr9-/- autoimmune-prone strains paradoxically develop more severe disease. We have now leveraged the negative regulatory role of TLR9 to develop an inducible rapid-onset murine model of systemic autoimmunity that depends on T cell detection of a membrane-bound OVA fusion protein expressed by MHC class II+ cells, expression of TLR7, expression of the type I IFN receptor, and loss of expression of TLR9. These mice are distinguished by a high frequency of OVA-specific Tbet+, IFN-γ+, and FasL-expressing Th1 cells as well as autoantibody-producing B cells. Unexpectedly, contrary to what occurs in most models of SLE, they also developed skin lesions that are very similar to those of human cutaneous lupus erythematosus (CLE) as far as clinical appearance, histological changes, and gene expression. FasL was a key effector mechanism in the skin, as the transfer of FasL-deficient DO11gld T cells completely failed to elicit overt skin lesions. FasL was also upregulated in human CLE biopsies. Overall, our model provides a relevant system for exploring the pathophysiology of CLE as well as the negative regulatory role of TLR9.
Collapse
Affiliation(s)
- Purvi Mande
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Bahar Zirak
- Department of Dermatology, UCSF, San Francisco, California, USA
| | - Wei-Che Ko
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Keyon Taravati
- Department of Dermatology, UCSF, San Francisco, California, USA
| | - Karen L Bride
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Tia Y Brodeur
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - April Deng
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Karen Dresser
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Zhaozhao Jiang
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Rachel Ettinger
- Respiratory, Autoimmunity, and Inflammation Department, MedImmune, Gaithersburg, Maryland, USA
| | - Katherine A Fitzgerald
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | | | - John E Harris
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Ann Marshak-Rothstein
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA.,Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, USA
| |
Collapse
|
16
|
Chen RJ, Kuo HC, Cheng LH, Lee YH, Chang WT, Wang BJ, Wang YJ, Cheng HC. Apoptotic and Nonapoptotic Activities of Pterostilbene against Cancer. Int J Mol Sci 2018; 19:ijms19010287. [PMID: 29346311 PMCID: PMC5796233 DOI: 10.3390/ijms19010287] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/09/2018] [Accepted: 01/16/2018] [Indexed: 01/01/2023] Open
Abstract
Cancer is a major cause of death. The outcomes of current therapeutic strategies against cancer often ironically lead to even increased mortality due to the subsequent drug resistance and to metastatic recurrence. Alternative medicines are thus urgently needed. Cumulative evidence has pointed out that pterostilbene (trans-3,5-dimethoxy-4-hydroxystilbene, PS) has excellent pharmacological benefits for the prevention and treatment for various types of cancer in their different stages of progression by evoking apoptotic or nonapoptotic anti-cancer activities. In this review article, we first update current knowledge regarding tumor progression toward accomplishment of metastasis. Subsequently, we review current literature regarding the anti-cancer activities of PS. Finally, we provide future perspectives to clinically utilize PS as novel cancer therapeutic remedies. We, therefore, conclude and propose that PS is one ideal alternative medicine to be administered in the diet as a nutritional supplement.
Collapse
Affiliation(s)
- Rong-Jane Chen
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (R.-J.C.); (Y.-H.L.)
| | - Hsiao-Che Kuo
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng-Kung University, Tainan 70101, Taiwan; (H.-C.K.); (W.-T.C.)
| | - Li-Hsin Cheng
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
| | - Yu-Hsuan Lee
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (R.-J.C.); (Y.-H.L.)
| | - Wen-Tsan Chang
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng-Kung University, Tainan 70101, Taiwan; (H.-C.K.); (W.-T.C.)
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
| | - Bour-Jr Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan 70101, Taiwan
- Department of Cosmetic Science and Institute of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan 707010, Taiwan
| | - Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40401, Taiwan
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan
- Correspondence: (Y.-J.W.); (H.-C.C.); Tel.: +886-6-235-3535 (ext. 5804) (Y.-J.W.); +886-6-235-3535 (ext. 5544) (H.-C.C.); Fax: +886-6-275-2484 (Y.-J.W.)
| | - Hung-Chi Cheng
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng-Kung University, Tainan 70101, Taiwan; (H.-C.K.); (W.-T.C.)
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
- Correspondence: (Y.-J.W.); (H.-C.C.); Tel.: +886-6-235-3535 (ext. 5804) (Y.-J.W.); +886-6-235-3535 (ext. 5544) (H.-C.C.); Fax: +886-6-275-2484 (Y.-J.W.)
| |
Collapse
|
17
|
Murmann AE, McMahon KM, Haluck-Kangas A, Ravindran N, Patel M, Law CY, Brockway S, Wei JJ, Thaxton CS, Peter ME. Induction of DISE in ovarian cancer cells in vivo. Oncotarget 2017; 8:84643-84658. [PMID: 29156673 PMCID: PMC5689563 DOI: 10.18632/oncotarget.21471] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 09/13/2017] [Indexed: 01/02/2023] Open
Abstract
The death receptor CD95/Fas can be activated by immune cells to kill cancer cells. shRNAs and siRNAs derived from CD95 or CD95 ligand (CD95L) are highly toxic to most cancer cells. We recently found that these sh/siRNAs kill cancer cells in the absence of the target by targeting the 3'UTRs of critical survival genes through canonical RNAi. We have named this unique form of off-target effect DISE (for death induced by survival gene elimination). DISE preferentially kills transformed cells and cancer stem cells. We demonstrate that DISE induction occurs in cancer cells in vivo after introducing a lentiviral CD95L derived shRNA (shL3) into HeyA8 ovarian cancer cells grown as i.p. xenografts in mice, when compared to a scrambled shRNA. To demonstrate the possibility of therapeutically inducing DISE, we coupled siRNAs to templated lipoprotein nanoparticles (TLP). In vitro, TLPs loaded with a CD95L derived siRNA (siL3) selectively silenced a biosensor comprised of Venus and CD95L ORF and killed ovarian cancer cells. In vivo, two siRNA-TLPs (siL2-TLP and siL3-TLP) reduced tumor growth similarly as observed for cells expressing the shL3 vector. These data suggest that it is possible to kill ovarian cancer cells in vivo via DISE induction using siRNA-TLPs.
Collapse
Affiliation(s)
- Andrea E. Murmann
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
| | - Kaylin M. McMahon
- Department of Urology, Chicago, Feinberg School of Medicine, IL, USA
- Simpson Querrey Institute (SQI) for BioNanotechnology, Chicago, IL, USA
| | - Ashley Haluck-Kangas
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
| | - Nandini Ravindran
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
| | - Monal Patel
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
| | - Calvin Y. Law
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
| | - Sonia Brockway
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
| | - Jian-Jun Wei
- Department of Pathology and Obstetrics and Gynecology, Feinberg School of Medicine, Chicago, IL, USA
| | - C. Shad Thaxton
- Department of Urology, Chicago, Feinberg School of Medicine, IL, USA
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Northwestern University, Chicago, IL, USA
- Simpson Querrey Institute (SQI) for BioNanotechnology, Chicago, IL, USA
- International Institute for Nanotechnology, Evanston, IL, USA
| | - Marcus E. Peter
- Department of Medicine/Division of Hematology/Oncology, Feinberg School of Medicine, Chicago, IL, USA
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Chicago, IL, USA
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Northwestern University, Chicago, IL, USA
| |
Collapse
|
18
|
Involvement of Fas/FasL pathway in the murine model of atopic dermatitis. Inflamm Res 2017; 66:679-690. [PMID: 28434120 PMCID: PMC5501908 DOI: 10.1007/s00011-017-1049-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 02/08/2017] [Accepted: 03/14/2017] [Indexed: 11/25/2022] Open
Abstract
Objective and design The aim of this study was to elucidate the role of apoptosis mediated through Fas/FasL pathway using the mouse model of atopic dermatitis (AD). Materials and treatment AD was induced by epicutaneous application of ovalbumin (OVA) in wild-type C57BL/6, B6. MRL-Faslpr/J (Fas−) and B6Smn.C3-Faslgld/J (FasL−) mouse strains. Methods Skin samples were subjected to staining for Fas/FasL expression, M30 epitope and assessment of inflammatory response via immunohistochemical staining. Cytokine and chemokine production was assessed by real-time PCR. Results In comparison to wild-type mice, OVA sensitization of Fas- and FasL-deficient mice led to increased epidermal and dermal thickness, collagen deposition and local inflammation consisting of macrophages, neutrophils and CD4+ T cells. Fas- and FasL-deficient mice showed increased total counts of regulatory T cells (Tregs) and IgE levels in blood as well as increased expression of IL-1β, IL-4, IL-5, IL-13 and TGF-1β mRNA in comparison to wild-type mice. On the other hand, expression of CXCL9 and CXCL10, IL-17 mRNAs in the skin samples in Fas- and FasL-deficient mice was decreased. Conclusions Our results show that lack of the Fas-induced apoptosis leads to exacerbation of AD characteristics such as Th2 inflammation and dermal thickening. Therefore, Fas receptor can play an important role in AD pathogenesis by controlling development of the local inflammation.
Collapse
|
19
|
Farey JE, Fisher OM, Levert-Mignon AJ, Forner PM, Lord RV. Decreased Levels of Circulating Cancer-Associated Protein Biomarkers Following Bariatric Surgery. Obes Surg 2017; 27:578-585. [PMID: 27525640 PMCID: PMC5306243 DOI: 10.1007/s11695-016-2321-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Epidemiological studies have identified obesity as a major risk factor for cancer in humans, and trials have demonstrated a significant reduction in the incidence of cancer after bariatric surgery. The rapidity of weight loss after bariatric surgery provides an opportunity to identify the molecular changes associated with effective obesity treatment. Indirectly, this may provide some insights into the mechanisms that drive the association between obesity and cancer. We sought to measure circulating cancer-associated proteins before and after laparoscopic sleeve gastrectomy (LSG). METHODS We prospectively enrolled 15 patients undergoing LSG. Thirty-four plasma protein biomarkers thought to be associated with cancer processes were analyzed at baseline and following successful weight loss at 12 weeks using a multiplex bead-based assay. RESULTS Mean excess body weight loss was 44 % at 12-week follow-up. After LSG, a significant reduction in circulating plasma levels was observed for half (17/34) of the proteins assessed: VEGF-A, VEGF-C, VEGF-D, endoglin, PLGF, sFASL, IGFBP-1, IL-18, prolactin, EGF, TGFα, sCD40L, IL-18, TNFα, IL-6, HB-EGF, and PAI-1. Nonsignificant decreases were found for the remaining proteins. CONCLUSIONS Circulating cancer-related biomarker levels were reduced by surgical weight loss, and this benefit was achieved as early as 3 months after operation. The observed reduction in cancer biomarkers may be related to the reported decrease in cancer incidence following bariatric surgery.
Collapse
Affiliation(s)
- John Edward Farey
- Department of Surgery, University of Notre Dame Australia, School of Medicine, Sydney, Darlinghurst, NSW Australia
- Gastro-Oesophageal Cancer Research Program, St Vincent’s Centre for Applied Medical Research, Darlinghurst, NSW Australia
| | - Oliver M. Fisher
- Department of Surgery, University of Notre Dame Australia, School of Medicine, Sydney, Darlinghurst, NSW Australia
- Gastro-Oesophageal Cancer Research Program, St Vincent’s Centre for Applied Medical Research, Darlinghurst, NSW Australia
| | - Angelique J. Levert-Mignon
- Department of Surgery, University of Notre Dame Australia, School of Medicine, Sydney, Darlinghurst, NSW Australia
- Gastro-Oesophageal Cancer Research Program, St Vincent’s Centre for Applied Medical Research, Darlinghurst, NSW Australia
| | - Patrice M. Forner
- Department of Surgery, University of Notre Dame Australia, School of Medicine, Sydney, Darlinghurst, NSW Australia
- Gastro-Oesophageal Cancer Research Program, St Vincent’s Centre for Applied Medical Research, Darlinghurst, NSW Australia
| | - Reginald V. Lord
- Department of Surgery, University of Notre Dame Australia, School of Medicine, Sydney, Darlinghurst, NSW Australia
- Gastro-Oesophageal Cancer Research Program, St Vincent’s Centre for Applied Medical Research, Darlinghurst, NSW Australia
| |
Collapse
|
20
|
Abstract
OBJECTIVE To describe the pathophysiology associated with multiple organ dysfunction syndrome in children. DATA SOURCES Literature review, research data, and expert opinion. STUDY SELECTION Not applicable. DATA EXTRACTION Moderated by an experienced expert from the field, pathophysiologic processes associated with multiple organ dysfunction syndrome in children were described, discussed, and debated with a focus on identifying knowledge gaps and research priorities. DATA SYNTHESIS Summary of presentations and discussion supported and supplemented by relevant literature. CONCLUSIONS Experiment modeling suggests that persistent macrophage activation may be a pathophysiologic basis for multiple organ dysfunction syndrome. Children with multiple organ dysfunction syndrome have 1) reduced cytochrome P450 metabolism inversely proportional to inflammation; 2) increased circulating damage-associated molecular pattern molecules from injured tissues; 3) increased circulating pathogen-associated molecular pattern molecules from infection or endogenous microbiome; and 4) cytokine-driven epithelial, endothelial, mitochondrial, and immune cell dysfunction. Cytochrome P450s metabolize endogenous compounds and xenobiotics, many of which ameliorate inflammation, whereas damage-associated molecular pattern molecules and pathogen-associated molecular pattern molecules alone and together amplify the cytokine production leading to the inflammatory multiple organ dysfunction syndrome response. Genetic and environmental factors can impede inflammation resolution in children with a spectrum of multiple organ dysfunction syndrome pathobiology phenotypes. Thrombocytopenia-associated multiple organ dysfunction syndrome patients have extensive endothelial activation and thrombotic microangiopathy with associated oligogenic deficiencies in inhibitory complement and a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13. Sequential multiple organ dysfunction syndrome patients have soluble Fas ligand-Fas-mediated hepatic failure with associated oligogenic deficiencies in perforin and granzyme signaling. Immunoparalysis-associated multiple organ dysfunction syndrome patients have impaired ability to resolve infection and have associated environmental causes of lymphocyte apoptosis. These inflammation phenotypes can lead to macrophage activation syndrome. Resolution of multiple organ dysfunction syndrome requires elimination of the source of inflammation. Full recovery of organ functions is noted 6-18 weeks later when epithelial, endothelial, mitochondrial, and immune cell regeneration and reprogramming is completed.
Collapse
|
21
|
Siegmund D, Lang I, Wajant H. Cell death-independent activities of the death receptors CD95, TRAILR1, and TRAILR2. FEBS J 2016; 284:1131-1159. [PMID: 27865080 DOI: 10.1111/febs.13968] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/10/2016] [Accepted: 11/17/2016] [Indexed: 12/25/2022]
Abstract
Since their identification more than 20 years ago, the death receptors CD95, TRAILR1, and TRAILR2 have been intensively studied with respect to their cell death-inducing activities. These receptors, however, can also trigger a variety of cell death-independent cellular responses reaching from the activation of proinflammatory gene transcription programs over the stimulation of proliferation and differentiation to induction of cell migration. The cell death-inducing signaling mechanisms of CD95 and the TRAIL death receptors are well understood. In contrast, despite the increasing recognition of the biological and pathophysiological relevance of the cell death-independent activities of CD95, TRAILR1, and TRAILR2, the corresponding signaling mechanisms are less understood and give no fully coherent picture. This review is focused on the cell death-independent activities of CD95 and the TRAIL death receptors and addresses mainly three questions: (a) how are these receptors linked to noncell death pathways at the molecular level, (b) which factors determine the balance of cell death and cell death-independent activities of CD95 and the TRAIL death receptors at the cellular level, and (c) what are the consequences of the cell death-independent functions of these receptors for their role in cancer and inflammatory diseases.
Collapse
Affiliation(s)
- Daniela Siegmund
- Division of Molecular Internal Medicine, Medical Clinic and Polyclinic II, University Hospital Würzburg, Germany
| | - Isabell Lang
- Division of Molecular Internal Medicine, Medical Clinic and Polyclinic II, University Hospital Würzburg, Germany
| | - Harald Wajant
- Division of Molecular Internal Medicine, Medical Clinic and Polyclinic II, University Hospital Würzburg, Germany
| |
Collapse
|
22
|
Krishnan A, Fei F, Jones A, Busto P, Marshak-Rothstein A, Ksander BR, Gregory-Ksander M. Overexpression of Soluble Fas Ligand following Adeno-Associated Virus Gene Therapy Prevents Retinal Ganglion Cell Death in Chronic and Acute Murine Models of Glaucoma. THE JOURNAL OF IMMUNOLOGY 2016; 197:4626-4638. [PMID: 27849168 DOI: 10.4049/jimmunol.1601488] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 10/15/2016] [Indexed: 12/28/2022]
Abstract
Glaucoma is a multifactorial disease resulting in the death of retinal ganglion cells (RGCs) and irreversible blindness. Glaucoma-associated RGC death depends on the proapoptotic and proinflammatory activity of membrane-bound Fas ligand (mFasL). In contrast to mFasL, the natural cleavage product, soluble Fas ligand (sFasL) inhibits mFasL-mediated apoptosis and inflammation and, therefore, is an mFasL antagonist. DBA/2J mice spontaneously develop glaucoma and, predictably, RGC destruction is exacerbated by expression of a mutated membrane-only FasL gene that lacks the extracellular cleavage site. Remarkably, one-time intraocular adeno-associated virus-mediated gene delivery of sFasL provides complete and sustained neuroprotection in the chronic DBA/2J and acute microbead-induced models of glaucoma, even in the presence of elevated intraocular pressure. This protection correlated with inhibition of glial activation, reduced production of TNF-α, and decreased apoptosis of RGCs and loss of axons. These data indicate that cleavage of FasL under homeostatic conditions, and the ensuing release of sFasL, normally limits the neurodestructive activity of FasL. The data further support the notion that sFasL, and not mFasL, contributes to the immune-privileged status of the eye.
Collapse
Affiliation(s)
- Anitha Krishnan
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114
| | - Fei Fei
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114.,Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, People's Republic of China; and
| | - Alexander Jones
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114
| | - Patricia Busto
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01655
| | - Ann Marshak-Rothstein
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01655
| | - Bruce R Ksander
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114
| | - Meredith Gregory-Ksander
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114;
| |
Collapse
|
23
|
Integrated analysis of microRNAs, transcription factors and target genes expression discloses a specific molecular architecture of hyperdiploid multiple myeloma. Oncotarget 2016; 6:19132-47. [PMID: 26056083 PMCID: PMC4662480 DOI: 10.18632/oncotarget.4302] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 05/13/2015] [Indexed: 12/13/2022] Open
Abstract
Multiple Myeloma (MM) is a malignancy characterized by the hyperdiploid (HD-MM) and the non-hyperdiploid (nHD-MM) subtypes. To shed light within the molecular architecture of these subtypes, we used a novel integromics approach. By annotated MM patient mRNA/microRNA (miRNA) datasets, we investigated mRNAs and miRNAs profiles with relation to changes in transcriptional regulators expression. We found that HD-MM displays specific gene and miRNA expression profiles, involving the Signal Transducer and Activator of Transcription (STAT)3 pathway as well as the Transforming Growth Factor–beta (TGFβ) and the transcription regulator Nuclear Protein-1 (NUPR1). Our data define specific molecular features of HD-MM that may translate in the identification of novel relevant druggable targets.
Collapse
|
24
|
Adly AA, Ismail EA, Andrawes NG, Mahmoud MM, Eladawy R. Soluble Fas/FasL ratio as a marker of vasculopathy in children and adolescents with sickle cell disease. Cytokine 2016; 79:52-8. [PMID: 26765484 DOI: 10.1016/j.cyto.2015.12.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/12/2015] [Accepted: 12/29/2015] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Sickle cell disease (SCD) is characterized by chronic inflammation due to ischemic tissue damage, accentuated during acute complications. Fas and its ligand (FasL) are members of tumor necrosis factor receptor superfamily and a major pathway for induction of apoptosis. Fas/FasL interactions may be related to augmentation of inflammatory response. We assessed the levels of sFas and sFasL in 35 children and adolescents with SCD compared with 35 healthy controls in relation to hemolysis, iron overload, sickle vasculopathy including kidney disease. METHODS SCD patients, in steady state and asymptomatic for pulmonary hypertension, were studied stressing on hydroxyurea therapy, serum ferritin, urinary albumin creatinine ratio (UACR), high-sensitivity C-reactive protein (hs-CRP) and sFas/sFasL levels. RESULTS sFas/sFasL ratio was significantly higher in patients compared with controls. sFas/sFasL ratio was elevated in patients with pulmonary hypertension, nephropathy and those who had history of frequent sickling crisis or serum ferritin ⩾2500. SCD patients treated with hydroxyurea had lower sFas/sFasL ratio than untreated patients. sFas/sFasL ratio was positively correlated to transfusion index, white blood cells, hs-CRP, serum ferritin and UACR. The cutoff value of sFas/sFasL at 8.75pg/mL could differentiate SCD patients with and without nephropathy while the cutoff value at 22pg/mL could differentiate SCD patients with and without pulmonary hypertension risk with high sensitivity and specificity. CONCLUSION sFas/sFasL ratio may be considered as a marker for vascular dysfunction in SCD patients and is related to inflammation, iron overload and albuminuria level. Thus, it may be a reliable method to assess renal impairment in SCD.
Collapse
Affiliation(s)
- Amira A Adly
- Department of Pediatric, Faculty of Medicine, Ain Shams University, Egypt
| | - Eman A Ismail
- Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Egypt.
| | - Nevine G Andrawes
- Department of Pediatric, Faculty of Medicine, Ain Shams University, Egypt
| | - Mai M Mahmoud
- Department of Pediatric, Faculty of Medicine, Ain Shams University, Egypt
| | - Rasha Eladawy
- Department of Pediatric, Faculty of Medicine, Ain Shams University, Egypt
| |
Collapse
|
25
|
Radin D, Lippa A, Patel P, Leonardi D. Lifeguard inhibition of Fas-mediated apoptosis: A possible mechanism for explaining the cisplatin resistance of triple-negative breast cancer cells. Biomed Pharmacother 2015; 77:161-6. [PMID: 26796280 DOI: 10.1016/j.biopha.2015.12.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 10/09/2015] [Accepted: 12/15/2015] [Indexed: 12/22/2022] Open
Abstract
Triple-negative breast cancer does not express estrogen receptor-α, progesterone or the HER2 receptor making hormone or antibody therapy ineffective. Cisplatin may initiate p73-dependent apoptosis in p53 mutant cell lines through Fas trimerization and Caspase-8 activation and Bax up regulation and subsequent Caspase-9 activation. The triple-negative breast cancer, MDA-MB-231, overexpresses the protein Lifeguard, which inhibits Fas-mediated apoptosis by inhibiting Caspase-8 activation after Fas trimerization. The relationship between Fas, Lifeguard and cisplatin is investigated by down regulating Lifeguard via shRNA. Results demonstrate that cisplatin's efficacy increases when Lifeguard is down regulated. Lifeguard Knockdown MDA-MB-231 continue to decrease in cell viability from 24 to 48h after cisplatin treatment while no additional decrease in viability is observed in the Wild-Type MDA over the same period. Higher Caspase-8 activity in the Lifeguard knockdown MDA after cisplatin administration could explain the significant decrease in cell viability from 24 to 48h. This cell type is also more sensitive to Fas ligand-mediated reductions in cell viability, confirming Lifeguard's anti-apoptotic function through the Fas receptor. This research suggests that the efficacy of chemotherapy acting through the Fas pathway would increase if Lifeguard were not overexpressed to inhibit Fas-mediated apoptosis.
Collapse
Affiliation(s)
- Daniel Radin
- Department of Biology, College of Arts and Sciences, University of Rochester, Rochester, NY14627, United States.
| | - Arnold Lippa
- Cortex Pharmaceuticals, Glen Rock, NJ 07452, United States
| | - Parth Patel
- Biology department, College of Arts and Sciences, New York University, New York NY 10003, United States
| | - Donna Leonardi
- Bergen County Academies, Hackensack NJ 07601, United States
| |
Collapse
|
26
|
Pietkiewicz S, Eils R, Krammer PH, Giese N, Lavrik IN. Combinatorial treatment of CD95L and gemcitabine in pancreatic cancer cells induces apoptotic and RIP1-mediated necroptotic cell death network. Exp Cell Res 2015; 339:1-9. [PMID: 26453936 DOI: 10.1016/j.yexcr.2015.10.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 10/04/2015] [Accepted: 10/06/2015] [Indexed: 11/30/2022]
Abstract
Combination therapy of cancer is based on the cumulative effects mediated by several drugs. Although molecular mechanisms of action of each particular drug are partially elucidated, understanding of the dynamic cross-talk between different cell death pathways at the quantitative level induced by combination therapy is still missing. Here, we exemplified this question for the death receptor (DR) networks in pancreatic cancer cells. We demonstrate that the combined action of CD95L and gemcitabine in pancreatic cancer cells leads to the simultaneous induction of caspase-dependent and caspase-independent cell death. The pro-apoptotic effects are mediated through down-regulation of the anti-apoptotic proteins c-FLIP and Mcl-1, while caspase-independent cell death was blocked by inhibition of the kinase activity of RIP1. Furthermore, gemcitabine co-treatment strongly increased the amount of cells undergoing CD95-induced RIP1-regulated necrosis. Imaging flow cytometry has enabled us to get the quantitative insights into the apoptosis-necroptosis network and reveal that the majority of the cells upon the CD95L/gemcitabine co-treatment undergoes necroptosis. Our data underlie the importance of the quantitative understanding of the interplay between different cell death modalities, which is essential for the development of anti-cancer therapies. Taken together, our results are important for combination therapy of pancreatic cancer comprising chemotherapeutics and DR-agonists and offer a possibility to sensitize cells with defects in the apoptotic machinery towards necroptosis-type-mediated death.
Collapse
Affiliation(s)
- Sabine Pietkiewicz
- Department of Translational Inflammation Research, Institute of Experimental Internal Medicine, Otto von Guericke University, Magdeburg, Germany
| | - Roland Eils
- Bioquant, Heidelberg University, 69120 Heidelberg, Germany; Department for Bioinformatics and Functional Genomics, Institute for Pharmacy and Molecular Biotechnology, University of Heidelberg, 69120 Heidelberg, Germany; Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Peter H Krammer
- Division of Immunogenetics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Natalia Giese
- Department of General Surgery, University of Heidelberg, Germany (g)Federal Research Center Institute of Cytology and Genetics, Novosibirsk, Russia
| | - Inna N Lavrik
- Department of Translational Inflammation Research, Institute of Experimental Internal Medicine, Otto von Guericke University, Magdeburg, Germany; Federal Research Center Institute of Cytology and Genetics, Novosibirsk, Russia.
| |
Collapse
|
27
|
Flusberg DA, Sorger PK. Surviving apoptosis: life-death signaling in single cells. Trends Cell Biol 2015; 25:446-58. [PMID: 25920803 PMCID: PMC4570028 DOI: 10.1016/j.tcb.2015.03.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/19/2015] [Accepted: 03/19/2015] [Indexed: 12/16/2022]
Abstract
Tissue development and homeostasis are regulated by opposing pro-survival and pro-death signals. An interesting feature of the Tumor Necrosis Factor (TNF) family of ligands is that they simultaneously activate opposing signals within a single cell via the same ligand-receptor complex. The magnitude of pro-death events such as caspase activation and pro-survival events such as Nuclear Factor (NF)-κB activation vary not only from one cell type to the next but also among individual cells of the same type due to intrinsic and extrinsic noise. The molecules involved in these pro-survival and/or pro-death pathways, and the different phenotypes that result from their activities, have been recently reviewed. Here we focus on the impact of cell-to-cell variability in the strength of these opposing signals on shaping cell fate decisions.
Collapse
Affiliation(s)
- Deborah A Flusberg
- Laboratory of Systems Pharmacology, Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Peter K Sorger
- Laboratory of Systems Pharmacology, Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.
| |
Collapse
|
28
|
Pan W, Sun Q, Wang Y, Wang J, Cao S, Ren X. Highlights on mechanisms of drugs targeting MDSCs: providing a novel perspective on cancer treatment. Tumour Biol 2015; 36:3159-69. [DOI: 10.1007/s13277-015-3363-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 03/19/2015] [Indexed: 12/22/2022] Open
|
29
|
Kubo N, McCurdy S, Boisvert WA. Defective Fas Expression on Bone Marrow Derived Cells Alters Atherosclerotic Plaque Morphology in Hyperlipidemic Mice. Discoveries (Craiova) 2015; 3. [PMID: 26322329 PMCID: PMC4548988 DOI: 10.15190/d.2015.29] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Fas (CD95) is a member of the TNF-receptor family expressed on a wide range of cells. Interaction of Fas with its receptor, Fas ligand (Fas-L), stimulates an intracellular cascade of events that leads to apoptosis. Because apoptosis of inflammatory cells plays a key role in atherosclerosis we sought to determine the role of Fas in the development of atherosclerosis by repopulating the bone marrow cells of atherosclerosis-prone low density lipoprotein receptor null (LDL-R-/-) mice with either cells from lpr mice (lpr-BMT) that have defective Fas expression or from control mice (WT-BMT). The lpr-BMT mice exhibited no peripheral blood Fas expression 4 weeks after BMT. After consuming an atherogenic diet for 16 weeks, lpr-BMT mice developed atherosclerotic lesions characterized by smaller fibrous area with thinner fibrous cap and less TUNEL-positive staining compared to WT-BMT mice, although overall lesion size in lpr-BMT mice was similar to that of WT-BMT mice. Examination of a series of human atherosclerotic lesions revealed that many Fas-positive cells were colocalized with CD68-positive macrophages. Although apoptotic cells were rarely observed in the foam cell-rich fatty streak lesions, apoptotic CD68-positive macrophages in advanced lesions were detected in areas rich with inflammatory cells near the necrotic core. These observations suggest that Fas expression by the macrophages in atherosclerotic lesions can influence the plaque morphology towards a more fibrous type.
Collapse
Affiliation(s)
- Nobuhiko Kubo
- Department of Clinical Laboratory Medicine, Omiya Medical Center, Jichi Medical School, Japan
| | - Sara McCurdy
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| | - William A Boisvert
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| |
Collapse
|
30
|
Lipid rafts and raft-mediated supramolecular entities in the regulation of CD95 death receptor apoptotic signaling. Apoptosis 2015; 20:584-606. [DOI: 10.1007/s10495-015-1104-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
31
|
The role of CD95 and CD95 ligand in cancer. Cell Death Differ 2015; 22:549-59. [PMID: 25656654 PMCID: PMC4356349 DOI: 10.1038/cdd.2015.3] [Citation(s) in RCA: 177] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 12/27/2014] [Accepted: 01/02/2015] [Indexed: 02/07/2023] Open
Abstract
CD95 (Fas/APO-1) and its ligand, CD95L, have long been viewed as a death receptor/death ligand system that mediates apoptosis induction to maintain immune homeostasis. In addition, these molecules are important in the immune elimination of virus-infected cells and cancer cells. CD95L was, therefore, considered to be useful for cancer therapy. However, major side effects have precluded its systemic use. During the last 10 years, it has been recognized that CD95 and CD95L have multiple cancer-relevant nonapoptotic and tumor-promoting activities. CD95 and CD95L were discovered to be critical survival factors for cancer cells, and were found to protect and promote cancer stem cells. We now discuss five different ways in which inhibiting or eliminating CD95L, rather than augmenting, may be beneficial for cancer therapy alone or in combination with standard chemotherapy or immune therapy.
Collapse
|
32
|
Kuhla A, Thrum M, Schaeper U, Fehring V, Schulze-Topphoff U, Abshagen K, Vollmar B. Liver-specific Fas silencing prevents galactosamine/lipopolysaccharide-induced liver injury. Apoptosis 2015; 20:500-11. [DOI: 10.1007/s10495-015-1088-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
33
|
XIAP-targeting drugs re-sensitize PIK3CA-mutated colorectal cancer cells for death receptor-induced apoptosis. Cell Death Dis 2014; 5:e1570. [PMID: 25501831 PMCID: PMC4649844 DOI: 10.1038/cddis.2014.534] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 10/17/2014] [Accepted: 11/05/2014] [Indexed: 02/07/2023]
Abstract
Mutations in the oncogenic PIK3CA gene are found in 10–20% of colorectal cancers (CRCs) and are associated with poor prognosis. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and agonistic TRAIL death receptor antibodies emerged as promising anti-neoplastic therapeutics, but to date failed to prove their capability in the clinical setting as especially primary tumors exhibit high rates of TRAIL resistance. In our study, we investigated the molecular mechanisms underlying TRAIL resistance in CRC cells with a mutant PIK3CA (PIK3CA-mut) gene. We show that inhibition of the constitutively active phosphatidylinositol-3 kinase (PI3K)/Akt signaling pathway only partially overcame TRAIL resistance in PIK3CA-mut-protected HCT116 cells, although synergistic effects of TRAIL plus PI3K, Akt or cyclin-dependent kinase (CDK) inhibitors could be noted. In sharp contrast, TRAIL triggered full-blown cell death induction in HCT116 PIK3CA-mut cells treated with proteasome inhibitors such as bortezomib and MG132. At the molecular level, resistance of HCT116 PIK3CA-mut cells against TRAIL was reflected by impaired caspase-3 activation and we provide evidence for a crucial involvement of the E3-ligase X-linked inhibitor of apoptosis protein (XIAP) therein. Drugs interfering with the activity and/or the expression of XIAP, such as the second mitochondria-derived activator of caspase mimetic BV6 and mithramycin-A, completely restored TRAIL sensitivity in PIK3CA-mut-protected HCT116 cells independent of a functional mitochondrial cell death pathway. Importantly, proteasome inhibitors and XIAP-targeting agents also sensitized other CRC cell lines with mutated PIK3CA for TRAIL-induced cell death. Together, our data suggest that proteasome- or XIAP-targeting drugs offer a novel therapeutic approach to overcome TRAIL resistance in PIK3CA-mutated CRC.
Collapse
|
34
|
Suo H, Song JLE, Zhou Y, Liu Z, Yi R, Zhu K, Xie J, Zhao X. Induction of apoptosis in HCT-116 colon cancer cells by polysaccharide of Larimichthys crocea swim bladder. Oncol Lett 2014; 9:972-978. [PMID: 25624917 PMCID: PMC4301533 DOI: 10.3892/ol.2014.2756] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 11/21/2014] [Indexed: 12/23/2022] Open
Abstract
Larimichthys crocea swim bladder is a traditional food and medicine widely used in China. The in vitro anticancer effects of polysaccharide of L. crocea swim bladder (PLCSB) in HCT-116 human colon cancer cells was investigated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. At concentrations ranging between 0 and 800 μg/ml PLCSB, cancer cell viability was decreased by PLCSB in a concentration-dependent manner. In particular, 400 μg/ml PLCSB significantly (P<0.05) induced apoptosis, which was demonstrated by 4,6-diamidino-2-phenylindole staining and flow cytometry analysis. To elucidate the mechanisms underlying the anticancer effect of PLCSB in HCT-116 cancer cells, the expression of apoptosis and metastasis-associated genes was analyzed by reverse transcription-polymerase chain reaction and western blot analysis. A total of 400 μg/ml PLCSB significantly induced apoptosis in HCT-116 cells (P<0.05) via the upregulation Bax, p53, p21, apoptotic protease activating factor 1, caspase-3, -8, and -9, as well as Fas and the downregulation of B-cell lymphoma 2 (Bcl-2), Bcl-extra large and Fas ligand (L). The results of this study demonstrated that PLCSB exhibits an anticancer effect on HCT-116 colon cancer cells, in vitro.
Collapse
Affiliation(s)
- Huayi Suo
- College of Food Science, Southwest University, Chongqing 400715, P.R. China
| | - Jia-LE Song
- Department of Nutrition and Food Hygiene, School of Public Health, Guilin Medical University, Guilin, Guangxi 541004, P.R. China ; Department of Food Science and Nutrition, Pusan National University, Busan 609735, Republic of Korea
| | - Yalin Zhou
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, P.R. China
| | - Zhenhu Liu
- Science and Technology Administration, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Ruokun Yi
- Department of Food Science and Nutrition, Pusan National University, Busan 609735, Republic of Korea
| | - Kai Zhu
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, P.R. China
| | - Jie Xie
- College of Food Science, Southwest University, Chongqing 400715, P.R. China
| | - Xin Zhao
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, P.R. China ; Institute of Functional Ecological Food, Chongqing University of Education, Chongqing 400067, P.R. China
| |
Collapse
|
35
|
Ceppi P, Hadji A, Kohlhapp FJ, Pattanayak A, Hau A, Liu X, Liu H, Murmann AE, Peter ME. CD95 and CD95L promote and protect cancer stem cells. Nat Commun 2014; 5:5238. [PMID: 25366259 PMCID: PMC4417339 DOI: 10.1038/ncomms6238] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 09/11/2014] [Indexed: 02/07/2023] Open
Abstract
CD95 (APO-1/Fas) is a death receptor used by immune cells to kill cancer cells through induction of apoptosis. However, the elimination of CD95 or its ligand, CD95L, from cancer cells results in death induced by CD95R/L elimination (DICE), a type of cell death that resembles a necrotic form of mitotic catastrophe suggesting that CD95 protects cancer cells from cell death. We now report that stimulation of CD95 on cancer cells or reducing miR-200c levels increases the number of cancer stem cells (CSCs), which are more sensitive to induction of DICE than non-CSC, while becoming less sensitive to CD95-mediated apoptosis. In contrast, induction of DICE or overexpression of miR-200c reduces the number of CSCs. We demonstrate that CSCs and non-CSCs have differential sensitivities to CD95-mediated apoptosis and DICE, and that killing of cancer cells can be maximized by concomitant induction of both cell death mechanisms.
Collapse
Affiliation(s)
- Paolo Ceppi
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Abbas Hadji
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Frederick J Kohlhapp
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Abhinandan Pattanayak
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Annika Hau
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Xia Liu
- Department of Pathology and Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Huiping Liu
- Department of Pathology and Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Andrea E Murmann
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Marcus E Peter
- Division Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| |
Collapse
|
36
|
Ma TY, Wu JY, Gao XK, Wang JY, Zhan XL, Li WS. Molecular cloning, functional identification and expressional analyses of FasL in Tilapia, Oreochromis niloticus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 46:448-460. [PMID: 24950416 DOI: 10.1016/j.dci.2014.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/01/2014] [Accepted: 06/10/2014] [Indexed: 06/03/2023]
Abstract
FasL is the most extensively studied apoptosis ligand. In 2000, tilapia FasL was identified using anti-human FasL monoclonal antibody by Evans's research group. Recently, a tilapia FasL-like protein of smaller molecule weight was predicted in Genbank (XM_003445156.2). Based on several clues drawn from previous studies, we cast doubt on the authenticity of the formerly identified tilapia FasL. Conversely, using reverse transcription polymerase chain reaction (RT-PCR), the existence of the predicted FasL-like was verified at the mRNA level (The Genbank accession number of the FasL mRNA sequence we cloned is KM008610). Through multiple alignments, this FasL-like protein was found to be highly similar to the FasL of the Japanese flounder. Moreover, we artificially expressed the functional region of the predicted protein and later confirmed its apoptosis-inducing activity using a methyl thiazolyl tetrazolium (MTT) assay, Annexin-V/Propidium iodide (PI) double staining, and DNA fragment detection. Supported by these evidences, we suggest that the predicted protein is the authentic tilapia FasL. To advance this research further, tilapia FasL mRNA and its protein across different tissues were quantified. High expression levels were identified in the tilapia immune system and sites where active cell turnover conservatively occurs. In this regard, FasL may assume an active role in the immune system and cell homeostasis maintenance in tilapia, similar to that shown in other species. In addition, because the distribution pattern of FasL mRNA did not synchronize with that of the protein, post-transcriptional expression regulation is suggested. Such regulation may be dominated by potential adenylate- and uridylate-rich elements (AREs) featuring AUUUA repeats found in the 3' untranslated region (UTR) of tilapia FasL mRNA.
Collapse
Affiliation(s)
- Tai-yang Ma
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Jin-ying Wu
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Xiao-ke Gao
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Jing-yuan Wang
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Xu-liang Zhan
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Wen-sheng Li
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| |
Collapse
|
37
|
Wueest S, Mueller R, Blüher M, Item F, Chin ASH, Wiedemann MSF, Takizawa H, Kovtonyuk L, Chervonsky AV, Schoenle EJ, Manz MG, Konrad D. Fas (CD95) expression in myeloid cells promotes obesity‐induced muscle insulin resistance. EMBO Mol Med 2014; 6:43-56. [PMID: 24203314 PMCID: PMC3936487 DOI: 10.1002/emmm.201302962] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 09/30/2013] [Accepted: 10/01/2013] [Indexed: 12/12/2022] Open
Abstract
Low-grade inflammation in adipose tissue and liver has been implicated in obesity-associated insulin resistance and type 2 diabetes. Yet, the contribution of inflammatory cells to the pathogenesis of skeletal muscle insulin resistance remains elusive. In a large cohort of obese human individuals, blood monocyte Fas (CD95) expression correlated with systemic and skeletal muscle insulin resistance. To test a causal role for myeloid cell Fas expression in the development of skeletal muscle insulin resistance, we generated myeloid/haematopoietic cell-specific Fas-depleted mice. Myeloid/haematopoietic Fas deficiency prevented the development of glucose intolerance in high fat-fed mice, in ob/ob mice, and in mice acutely challenged by LPS. In vivo, ex vivo and in vitro studies demonstrated preservation of muscle insulin responsiveness with no effect on adipose tissue or liver. Studies using neutralizing antibodies demonstrated a role for TNFα as mediator between myeloid Fas and skeletal muscle insulin resistance, supported by significant correlations between monocyte Fas expression and circulating TNFα in humans. In conclusion, our results demonstrate an unanticipated crosstalk between myeloid cells and skeletal muscle in the development of obesity-associated insulin resistance.
Collapse
Affiliation(s)
- Stephan Wueest
- Division of Pediatric Endocrinology and Diabetology, University Children's HospitalZurich, Switzerland
- Children's Research Centre, University Children's HospitalZurich, Switzerland
| | - Rouven Mueller
- Division of Hematology, University Hospital ZurichZurich, Switzerland
| | - Matthias Blüher
- University of Leipzig, Department of MedicineLeipzig, Germany
| | - Flurin Item
- Division of Pediatric Endocrinology and Diabetology, University Children's HospitalZurich, Switzerland
- Children's Research Centre, University Children's HospitalZurich, Switzerland
| | - Annie S H Chin
- Division of Pediatric Endocrinology and Diabetology, University Children's HospitalZurich, Switzerland
- Children's Research Centre, University Children's HospitalZurich, Switzerland
- Zurich Centre for Integrative Human Physiology, University of ZurichZurich, Switzerland
| | - Michael S F Wiedemann
- Division of Pediatric Endocrinology and Diabetology, University Children's HospitalZurich, Switzerland
- Children's Research Centre, University Children's HospitalZurich, Switzerland
| | - Hitoshi Takizawa
- Division of Hematology, University Hospital ZurichZurich, Switzerland
| | - Larisa Kovtonyuk
- Division of Hematology, University Hospital ZurichZurich, Switzerland
| | | | - Eugen J Schoenle
- Division of Pediatric Endocrinology and Diabetology, University Children's HospitalZurich, Switzerland
- Children's Research Centre, University Children's HospitalZurich, Switzerland
| | - Markus G Manz
- Division of Hematology, University Hospital ZurichZurich, Switzerland
| | - Daniel Konrad
- Division of Pediatric Endocrinology and Diabetology, University Children's HospitalZurich, Switzerland
- Children's Research Centre, University Children's HospitalZurich, Switzerland
- Zurich Centre for Integrative Human Physiology, University of ZurichZurich, Switzerland
- *Corresponding author: Tel: +41 44 266 7966; Fax: +41 44 266 7983; E-mail:
| |
Collapse
|
38
|
Activated cytotoxic lymphocytes promote tumor progression by increasing the ability of 3LL tumor cells to mediate MDSC chemoattraction via Fas signaling. Cell Mol Immunol 2014; 12:66-76. [PMID: 24769795 DOI: 10.1038/cmi.2014.21] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 03/01/2014] [Accepted: 03/02/2014] [Indexed: 02/07/2023] Open
Abstract
The Fas/FasL system transmits intracellular apoptotic signaling, inducing cell apoptosis. However, Fas signaling also exerts non-apoptotic functions in addition to inducing tumor cell apoptosis. For example, Fas signaling induces lung cancer tumor cells to produce prostaglandin E2 (PGE2) and recruit myeloid-derived suppressor cells (MDSCs). Activated cytotoxic T lymphocytes (CTLs) induce and express high levels of FasL, but the effects of Fas activation initiated by FasL in CTLs on apoptosis-resistant tumor cells remain largely unclear. We purified activated CD8(+) T cells from OT-1 mice, evaluated the regulatory effects of Fas activation on tumor cell escape and investigated the relevant mechanisms. We found that CTLs induced tumor cells to secrete PGE2 and increase tumor cell-mediated chemoattraction of MDSCs via Fas signaling, which was favorable to tumor growth. Our results indicate that CTLs may participate in the tumor immune evasion process. To the best of our knowledge, this is a novel mechanism by which CTLs play a role in tumor escape. Our findings implicate a strategy to enhance the antitumor immune response via reduction of negative immune responses to tumors promoted by CTLs through Fas signaling.
Collapse
|
39
|
Abstract
The conventional view of CD95 (Fas/APO-1) is that it is a dedicated apoptosis-inducing receptor with important functions in immune cell homeostasis and in viral and tumor defense. There is an emerging recognition, however, that CD95 also has multiple non-apoptotic activities. In the context of cancer, CD95 was shown to have tumor-promoting activities, and the concept of this new function of CD95 in cancer is gaining traction. Recently, we showed that not only is CD95 a growth promoter for cancer cells, but, paradoxically, when either CD95 or CD95 ligand (CD95L) is removed, that virtually all cancer cells die through a process we have named DICE (death induced by CD95R/L elimination). In this perspective, I outline a hypothesis regarding the physiological function of DICE, and why it may be possible to use induction of DICE to treat many, if not most, cancers.
Collapse
Affiliation(s)
- Marcus E Peter
- Northwestern University; Feinberg School of Medicine; Division Hematology/Oncology; Chicago, IL USA
| |
Collapse
|
40
|
Wiedemann MSF, Wueest S, Grob A, Item F, Schoenle EJ, Konrad D. Short-term HFD does not alter lipolytic function of adipocytes. Adipocyte 2014; 3:115-20. [PMID: 24719784 DOI: 10.4161/adip.27575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/18/2013] [Accepted: 12/18/2013] [Indexed: 12/13/2022] Open
Abstract
A short bout of high fat diet (HFD) impairs glucose tolerance and hepatic insulin sensitivity. We recently identified adipose tissue inflammation and resulting dysfunctional adipose tissue-liver cross-talk as an early event in the development of HFD-induced hepatic insulin resistance. In particular, reducing white adipose tissue (WAT) inflammation by adipocyte-specific depletion of Fas/CD95 protected mice from developing hepatic insulin resistance but not hepatic steatosis. Herein, we expanded our previous work and determined the impact of four days of HFD on lipolytic activity of isolated adipocytes. Compared with chow-fed mice, the degree of basal and isoproterenol-stimulated free fatty acid (FFA) and glycerol release was similar in HFD-fed animals. Moreover, insulin's ability to suppress lipolysis remained intact, suggesting retained insulin sensitivity. Despite unaltered lipolysis, circulating FFA concentrations were greatly increased in non-fasted HFD-fed mice. In conclusion, a short-term HFD challenge does not affect lipolytic function of adipocytes. The observed increase of circulating FFA levels in randomly fed animals may rather be the result of increased dietary fat supply.
Collapse
|
41
|
Liu Q, Tan Q, Zheng Y, Chen K, Qian C, Li N, Wang Q, Cao X. Blockade of Fas signaling in breast cancer cells suppresses tumor growth and metastasis via disruption of Fas signaling-initiated cancer-related inflammation. J Biol Chem 2014; 289:11522-11535. [PMID: 24627480 DOI: 10.1074/jbc.m113.525014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Mechanisms for cancer-related inflammation remain to be fully elucidated. Non-apoptotic functions of Fas signaling have been proposed to play an important role in promoting tumor progression. It has yet to be determined if targeting Fas signaling can control tumor progression through suppression of cancer-related inflammation. In the current study we found that breast cancer cells with constitutive Fas expression were resistant to apoptosis induction by agonistic anti-Fas antibody (Jo2) ligation or Fas ligand cross-linking. Higher expression of Fas in human breast cancer tissue has been significantly correlated with poorer prognosis in breast cancer patients. To determine whether blockade of Fas signaling in breast cancer could suppress tumor progression, we prepared an orthotopic xenograft mouse model with mammary cancer cells 4T1 and found that blockade of Fas signaling in 4T1 cancer cells markedly reduced tumor growth, inhibited tumor metastasis in vivo, and prolonged survival of tumor-bearing mice. Mechanistically, blockade of Fas signaling in cancer cells significantly decreased systemic or local recruitment of myeloid derived suppressor cells (MDSCs) in vivo. Furthermore, blockade of Fas signaling markedly reduced IL-6, prostaglandin E2 production from breast cancer cells by impairing p-p38, and activity of the NFκB pathway. In addition, administration of a COX-2 inhibitor and anti-IL-6 antibody significantly reduced MDSC accumulation in vivo. Therefore, blockade of Fas signaling can suppress breast cancer progression by inhibiting proinflammatory cytokine production and MDSC accumulation, indicating that Fas signaling-initiated cancer-related inflammation in breast cancer cells may be a potential target for treatment of breast cancer.
Collapse
Affiliation(s)
- Qiuyan Liu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China,.
| | - Qinchun Tan
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China, and
| | - Yuanyuan Zheng
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Kun Chen
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China, and
| | - Cheng Qian
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Nan Li
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Qingqing Wang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China, and
| | - Xuetao Cao
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China,; Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China, and; National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing 100005, China.
| |
Collapse
|
42
|
Modulation of hippocampal neuroplasticity by Fas/CD95 regulatory protein 2 (Faim2) in the course of bacterial meningitis. J Neuropathol Exp Neurol 2014; 73:2-13. [PMID: 24335530 PMCID: PMC3978830 DOI: 10.1097/nen.0000000000000020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Supplemental digital content is available in the text. Fas-apoptotic inhibitory molecule 2 (Faim2) is a neuron-specific membrane protein and a member of the evolutionary conserved lifeguard apoptosis regulatory gene family. Its neuroprotective effect in acute neurological diseases has been demonstrated in an in vivo model of focal cerebral ischemia. Here we show that Faim2 is physiologically expressed in the human brain with a changing pattern in cases of infectious meningoencephalitis.In Faim2-deficient mice, there was increased caspase-associated hippocampal apoptotic cell death and an increased extracellular signal-regulated kinase pattern during acute bacterial meningitis induced by subarachnoid infection with Streptococcus pneumoniae type 3 strain. However, after rescuing the animals by antibiotic treatment, Faim2 deficiency led to increased hippocampal neurogenesis at 7 weeks after infection. This was associated with improved performance of Faim2-deficient mice compared to wild-type littermates in the Morris water maze, a paradigm for hippocampal spatial learning and memory. Thus, Faim2 deficiency aggravated degenerative processes in the acute phase but induced regenerative processes in the repair phase of a mouse model of pneumococcal meningitis. Hence, time-dependent modulation of neuroplasticity by Faim2 may offer a new therapeutic approach for reducing hippocampal neuronal cell death and improving cognitive deficits after bacterial meningitis.
Collapse
|
43
|
Davis TE, Kis-Toth K, Szanto A, Tsokos GC. Glucocorticoids suppress T cell function by up-regulating microRNA-98. ACTA ACUST UNITED AC 2013; 65:1882-90. [PMID: 23575983 DOI: 10.1002/art.37966] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 04/02/2013] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To identify microRNAs (miRNAs) in human T cells that can explain known antiinflammatory properties of steroids. METHODS Activated human CD4+ T cells from healthy donors were exposed to 1 μM methylprednisolone (MP) in vitro and then subjected to miRNA and messenger RNA microarray analyses. Changes in expression profiles were recorded. Using quantitative polymerase chain reaction (qPCR), flow cytometry, and enzyme-linked immunosorbent assay (ELISA), we confirmed the suppression of predicted targets, and through miRNA transfection experiments, we could suggest mechanistic links. RESULTS We identified numerous steroid-responsive genes and miRNAs-many known and some novel-including multiple previously unknown proinflammatory genes suppressed by MP. Further studies using qPCR, flow cytometry, and ELISA demonstrated that methylprednisolone increased the expression of miRNA-98 (miR-98) and suppressed the levels of predicted targets, including interleukin-13 and 3 tumor necrosis factor receptors (TNFRs): Fas, FasL, and TNFR superfamily member 1B. Forced expression of miR-98 in T cells resulted in suppression of the same targets. CONCLUSION The findings of this study demonstrate a link between miR-98 expression and the effects of MP and provide evidence suggesting that MP acts through miR-98 to inhibit specific proinflammatory targets. Identification of this antiinflammatory mechanism of glucocorticoids is important, since it may pave the way toward the elusive goal of dissociating adverse effects from therapeutic effects.
Collapse
Affiliation(s)
- Trevor E Davis
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | | | | |
Collapse
|
44
|
Schneider-Brachert W, Heigl U, Ehrenschwender M. Membrane trafficking of death receptors: implications on signalling. Int J Mol Sci 2013; 14:14475-503. [PMID: 23852022 PMCID: PMC3742255 DOI: 10.3390/ijms140714475] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/19/2013] [Accepted: 06/27/2013] [Indexed: 12/22/2022] Open
Abstract
Death receptors were initially recognised as potent inducers of apoptotic cell death and soon ambitious attempts were made to exploit selective ignition of controlled cellular suicide as therapeutic strategy in malignant diseases. However, the complexity of death receptor signalling has increased substantially during recent years. Beyond activation of the apoptotic cascade, involvement in a variety of cellular processes including inflammation, proliferation and immune response was recognised. Mechanistically, these findings raised the question how multipurpose receptors can ensure selective activation of a particular pathway. A growing body of evidence points to an elegant spatiotemporal regulation of composition and assembly of the receptor-associated signalling complex. Upon ligand binding, receptor recruitment in specialized membrane compartments, formation of receptor-ligand clusters and internalisation processes constitute key regulatory elements. In this review, we will summarise the current concepts of death receptor trafficking and its implications on receptor-associated signalling events.
Collapse
Affiliation(s)
- Wulf Schneider-Brachert
- Institute for Clinical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, Regensburg 93053, Germany; E-Mails: (W.S.-B.); (U.H.)
| | - Ulrike Heigl
- Institute for Clinical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, Regensburg 93053, Germany; E-Mails: (W.S.-B.); (U.H.)
| | - Martin Ehrenschwender
- Institute for Clinical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, Regensburg 93053, Germany; E-Mails: (W.S.-B.); (U.H.)
| |
Collapse
|
45
|
Demers KR, Reuter MA, Betts MR. CD8(+) T-cell effector function and transcriptional regulation during HIV pathogenesis. Immunol Rev 2013; 254:190-206. [PMID: 23772621 PMCID: PMC3693771 DOI: 10.1111/imr.12069] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A detailed understanding of the immune response to human immunodeficiency virus (HIV) infection is needed to inform prevention and therapeutic strategies that aim to contain the acquired immunodeficiency syndrome (AIDS) pandemic. The cellular immune response plays a critical role in controlling viral replication during HIV infection and will likely need to be a part of any vaccine approach. The qualitative feature of the cellular response most closely associated with immunological control of HIV infection is CD8(+) T-cell cytotoxic potential, which is responsible for mediating the elimination of infected CD4(+) T cells. Understanding the underlying mechanisms involved in regulating the elicitation and maintenance of this kind of effector response can provide guidance for vaccine design. In this review, we discuss the evidence for CD8(+) T cells as correlates of protection, the means by which their antiviral capacity is evaluated, and transcription factors responsible for their function, or dysfunction, during HIV infection.
Collapse
Affiliation(s)
- Korey R. Demers
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Morgan A. Reuter
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael R. Betts
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| |
Collapse
|
46
|
Targeting of the tumor necrosis factor receptor superfamily for cancer immunotherapy. ISRN ONCOLOGY 2013; 2013:371854. [PMID: 23840967 PMCID: PMC3693168 DOI: 10.1155/2013/371854] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 05/11/2013] [Indexed: 12/17/2022]
Abstract
The tumor necrosis factor (TNF) ligand and cognate TNF receptor superfamilies constitute an important regulatory axis that is pivotal for immune homeostasis and correct execution of immune responses. TNF ligands and receptors are involved in diverse biological processes ranging from the selective induction of cell death in potentially dangerous and superfluous cells to providing costimulatory signals that help mount an effective immune response. This diverse and important regulatory role in immunity has sparked great interest in the development of TNFL/TNFR-targeted cancer immunotherapeutics. In this review, I will discuss the biology of the most prominent proapoptotic and co-stimulatory TNF ligands and review their current status in cancer immunotherapy.
Collapse
|
47
|
Flusberg DA, Roux J, Spencer SL, Sorger PK. Cells surviving fractional killing by TRAIL exhibit transient but sustainable resistance and inflammatory phenotypes. Mol Biol Cell 2013; 24:2186-200. [PMID: 23699397 PMCID: PMC3708725 DOI: 10.1091/mbc.e12-10-0737] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Cells that survive fractional killing by TRAIL or FasR agonists enter a state of resistance accompanied by inflammatory phenotypes. This state is transient, decaying over the course of several days, but can be sustained by periodic TRAIL treatments. This finding has implications for optimal dosing strategies of extrinsic cell death agents. When clonal populations of human cells are exposed to apoptosis-inducing agents, some cells die and others survive. This fractional killing arises not from mutation but from preexisting, stochastic differences in the levels and activities of proteins regulating apoptosis. Here we examine the properties of cells that survive treatment with agonists of two distinct death receptors, tumor necrosis factor–related apoptosis-inducing ligand (TRAIL) and anti-FasR antibodies. We find that “survivor” cells are highly resistant to a second ligand dose applied 1 d later. Resistance is reversible, resetting after several days of culture in the absence of death ligand. “Reset” cells appear identical to drug-naive cells with respect to death ligand sensitivity and gene expression profiles. TRAIL survivors are cross-resistant to activators of FasR and vice versa and exhibit an NF-κB–dependent inflammatory phenotype. Remarkably, reversible resistance is induced in the absence of cell death when caspase inhibitors are present and can be sustained for 1 wk or more, also without cell death, by periodic ligand exposure. Thus stochastic differences in cell state can have sustained consequences for sensitivity to prodeath ligands and acquisition of proinflammatory phenotypes. The important role played by periodicity in TRAIL exposure for induction of opposing apoptosis and survival mechanisms has implications for the design of optimal therapeutic agents and protocols.
Collapse
Affiliation(s)
- Deborah A Flusberg
- Center for Cell Decision Processes, Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | | | | | | |
Collapse
|
48
|
Shishkov R, Chervenkov T, Yamashima T, Tonchev AB. Expression of Cyclon/CCDC86, a novel nuclear protein, in the hippocampus of adult non-human primates. J Neuroimmunol 2013; 258:96-9. [PMID: 23528659 DOI: 10.1016/j.jneuroim.2013.02.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 02/16/2013] [Accepted: 02/19/2013] [Indexed: 11/15/2022]
Abstract
Cyclon (cytokine-induced protein with coiled-coil domain), also known as CCDC86 (coiled-coil domain-containing protein 86), is a nuclear protein expressed in lymphocytes in mice where it regulates T-cell responses. Here we show that Cyclon/CCDC86 is expressed in the hippocampus of adult macaque monkeys, including both the hippocampus proper (cornu Ammonis) and the dentate gyrus. Cyclon/CCDC86 was localized to neurons and astrocytes in cornu Ammonis, while in the dentate gyrus the protein was also expressed in immature neurons and a very small fraction of proliferating cells. These results point to a novel expression pattern of Cyclon/CCDC86 beyond its currently known immune cell localization.
Collapse
Affiliation(s)
- Rinaldo Shishkov
- Department of Psychiatry and Medical Psychology, Medical University-Varna, Varna, Bulgaria
| | | | | | | |
Collapse
|
49
|
Fluhr H, Spratte J, Bredow M, Heidrich S, Zygmunt M. Constitutive activity of Erk1/2 and NF-κB protects human endometrial stromal cells from death receptor-mediated apoptosis. Reprod Biol 2013; 13:113-21. [PMID: 23719115 DOI: 10.1016/j.repbio.2013.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/24/2013] [Accepted: 03/04/2013] [Indexed: 12/16/2022]
Abstract
Apoptosis in the human endometrium plays an essential role for endometrial receptivity and early implantation. A dysbalance of pro- and anti-apoptotic events in the secretory endometrium seems to be involved in implantation disorders and consecutive pregnancy complications. However, little is known about the mechanisms regulating apoptosis-sensitivity in the human endometrium. Therefore this study was performed to identify molecular mechanisms underlying the resistance toward apoptosis in human endometrial stromal cells (ESCs). Human ESCs were isolated from hysterectomy specimens and used as undifferentiated cells or after decidualization in vitro. Cells were incubated with an activating anti-Fas antibody, tumor-necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL), TNF-α and inhibitors of protein- and RNA-syntheses, a caspase-inhibitor and inhibitors of extracellular signal regulated kinase (Erk)1/2, nuclear factor (NF)-κB and Akt. Apoptosis was measured by flow cytometric detection of hypodiploid nuclei. Caspase-activity was detected by luminescencent assays. Several pro- and anti-apoptotic molecules and the activation of Erk1/2, NF-κB and Akt were analyzed by in-cell Western assays or flow cytometry. Inhibition of protein- and RNA-syntheses differentially sensitized human ESCs for death receptor-mediated apoptosis in a caspase-dependent manner, based on the up-regulation of the death receptors Fas and TRAIL-R2. The constitutive activity of Erk1/2 and NF-κB could be identified as a reason for the apoptosis-resistance of human ESCs. These results suggest the pro-survival signaling pathways Erk1/2 and NF-κB as key regulators of the sensitivity of human ESCs for death receptor-mediated apoptosis. The modulation of these pathways might play an important role in the physiology of implantation.
Collapse
Affiliation(s)
- Herbert Fluhr
- Department of Obstetrics and Gynecology, University of Greifswald, Sauerbruchstr., 17475 Greifswald, Germany.
| | | | | | | | | |
Collapse
|
50
|
Rapold RA, Wueest S, Knoepfel A, Schoenle EJ, Konrad D. Fas activates lipolysis in a Ca2+-CaMKII-dependent manner in 3T3-L1 adipocytes. J Lipid Res 2012; 54:63-70. [PMID: 23089915 DOI: 10.1194/jlr.m028035] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Fas (CD95) is a member of the tumor necrosis factor (TNF) receptor superfamily and plays a crucial role in the induction of apoptosis. However, like TNF, Fas can induce nonapoptotic signaling pathways. We previously demonstrated that mice lacking Fas specifically in adipocytes are partly protected from diet-induced insulin resistance, potentially via decreased delivery of FAs to the liver, as manifested by lower total liver ceramide content. In the present study, we aimed to delineate the signaling pathway involved in Fas-mediated adipocyte lipid mobilization. Treatment of differentiated 3T3-L1 adipocytes with membrane-bound Fas ligand (FasL) significantly increased lipolysis after 12 h without inducing apoptosis. In parallel, Fas activation increased phosphorylation of ERK1/2, and FasL-induced lipolysis was blunted in the presence of the ERK-inhibitor U0126 or in ERK1/2-depleted adipocytes. Furthermore, Fas activation increased phosphorylation of the Ca(2+)/calmodulin-dependent protein kinases II (CaMKII), and blocking of the CaMKII-pathway (either by the Ca(2+) chelator BAPTA or by the CaMKII inhibitor KN62) blunted FasL-induced ERK1/2 phosphorylation and glycerol release. In conclusion, we propose a novel role for CaMKII in promoting lipolysis in adipocytes.
Collapse
Affiliation(s)
- Reto A Rapold
- Division of Pediatric Endocrinology and Diabetology, University Children's Hospital, CH-8032 Zurich, Switzerland
| | | | | | | | | |
Collapse
|