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Webster JD, Vucic D. The Balance of TNF Mediated Pathways Regulates Inflammatory Cell Death Signaling in Healthy and Diseased Tissues. Front Cell Dev Biol 2020; 8:365. [PMID: 32671059 PMCID: PMC7326080 DOI: 10.3389/fcell.2020.00365] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/23/2020] [Indexed: 12/17/2022] Open
Abstract
Tumor necrosis factor alpha (TNF; TNFα) is a critical regulator of immune responses in healthy organisms and in disease. TNF is involved in the development and proper functioning of the immune system by mediating cell survival and cell death inducing signaling. TNF stimulated signaling pathways are tightly regulated by a series of phosphorylation and ubiquitination events, which enable timely association of TNF receptors-associated intracellular signaling complexes. Disruption of these signaling events can disturb the balance and the composition of signaling complexes, potentially resulting in severe inflammatory diseases.
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Affiliation(s)
- Joshua D Webster
- Departments of Pathology and Early Discovery Biochemistry, Genentech, South San Francisco, CA, United States
| | - Domagoj Vucic
- Departments of Pathology and Early Discovery Biochemistry, Genentech, South San Francisco, CA, United States
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52
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Hou S, Chen G, Wang W, Xia L, Wang Z, Lu Y. Identification of a cell-wall peptidase (NlpC/P60) from Nocardia seriolae which induces apoptosis in fathead minnow cells. JOURNAL OF FISH DISEASES 2020; 43:571-581. [PMID: 32196698 DOI: 10.1111/jfd.13154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/13/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Nocardia seriolae, a Gram-positive bacterium, is the main pathogen of fish nocardiosis. Protein NlpC/P60 is a cell-wall peptidase and a potential virulence factor of N. seriolae. Subcellular localization research revealed that both NlpC/P60-GFP and NlpC/P60Δsig-GFP fusion proteins were evenly distributed in the whole cell of fathead minnow (FHM) cells. Furthermore, typical apoptotic features, such as nuclear pyrosis and apoptotic bodies, were observed in the transfected FHM cells and grouper spleen cells by the overexpression of protein NlpC/P60. Then, quantitative assays of mitochondrial membrane potential (ΔΨm) value, caspase-3 activity and apoptosis-related gene (Bax, BNIP3, TNF1 and TNF6) mRNA expression were conducted. The results showed that ΔΨm was decreased, caspase-3 was significantly activated, and the mRNA expression of pro-apoptotic genes (Bax and BNIP3) and tumour necrosis factors (TNF1 and TNF6) was up-regulated in NlpC/P60-overexpressed cells. Taken together, the results indicated that the protein NlpC/P60 of N. seriolae might involve in apoptosis regulation. This study may lay the foundation for further study on the function of N. seriolae NlpC/P60 and promote the understanding of the virulence factors and pathogenic mechanism of N. seriolae.
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Affiliation(s)
- Suying Hou
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
- Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Guoquan Chen
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
- Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Wenji Wang
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
- Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Liqun Xia
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
- Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, China
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China
| | - Zhiwen Wang
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
- Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Yishan Lu
- Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
- Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, China
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China
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53
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Fu XQ, Peng J, Wang AH, Luo ZG. Tumor necrosis factor alpha mediates neuromuscular synapse elimination. Cell Discov 2020; 6:9. [PMID: 32140252 PMCID: PMC7051980 DOI: 10.1038/s41421-020-0143-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 01/03/2020] [Indexed: 12/17/2022] Open
Abstract
During the development of mammalian neuromuscular junction (NMJ), the original supernumerary axon inputs are gradually eliminated, finally leaving each muscle fiber innervated by a single axon terminal. However, the molecular cues that mediate the elimination of redundant axon inputs remain unclear. Here we show that tumor necrosis factor-α (TNFα) expressed in postsynaptic muscle cells plays an important role in presynaptic axonal elimination at the NMJ. We found that intramuscular injection of TNFα into the levator auris longus (LAL) muscles caused disassociation of presynaptic nerve terminals from the postsynaptic acetylcholine receptor (AChR) clusters. By contrast, genetic ablation of TNFα globally or specifically in skeletal muscle cells, but not in motoneurons or Schwann cells, delayed the synaptic elimination. Moreover, ablation of TNFα in muscle cells attenuated the tendency of activity-dependent competition in a motoneuron-muscle coculture system. These results suggest a role of postsynaptic TNFα in the elimination of redundant synaptic inputs.
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Affiliation(s)
- Xiu-Qing Fu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210 China
| | - Jian Peng
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210 China
- State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ai-Hua Wang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210 China
| | - Zhen-Ge Luo
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210 China
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54
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Ortiz-Perez A, Donnelly B, Temple H, Tiao G, Bansal R, Mohanty SK. Innate Immunity and Pathogenesis of Biliary Atresia. Front Immunol 2020; 11:329. [PMID: 32161597 PMCID: PMC7052372 DOI: 10.3389/fimmu.2020.00329] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/10/2020] [Indexed: 12/12/2022] Open
Abstract
Biliary atresia (BA) is a devastating fibro-inflammatory disease characterized by the obstruction of extrahepatic and intrahepatic bile ducts in infants that can have fatal consequences, when not treated in a timely manner. It is the most common indication of pediatric liver transplantation worldwide and the development of new therapies, to alleviate the need of surgical intervention, has been hindered due to its complexity and lack of understanding of the disease pathogenesis. For that reason, significant efforts have been made toward the development of experimental models and strategies to understand the etiology and disease mechanisms and to identify novel therapeutic targets. The only characterized model of BA, using a Rhesus Rotavirus Type A infection of newborn BALB/c mice, has enabled the identification of key cellular and molecular targets involved in epithelial injury and duct obstruction. However, the establishment of an unleashed chronic inflammation followed by a progressive pathological wound healing process remains poorly understood. Like T cells, macrophages can adopt different functional programs [pro-inflammatory (M1) and resolutive (M2) macrophages] and influence the surrounding cytokine environment and the cell response to injury. In this review, we provide an overview of the immunopathogenesis of BA, discuss the implication of innate immunity in the disease pathogenesis and highlight their suitability as therapeutic targets.
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Affiliation(s)
- Ana Ortiz-Perez
- Department of Biomaterials Science and Technology, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | - Bryan Donnelly
- Department of Pediatric and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Haley Temple
- Department of Pediatric and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Greg Tiao
- Department of Pediatric and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Ruchi Bansal
- Department of Biomaterials Science and Technology, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | - Sujit Kumar Mohanty
- Department of Pediatric and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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55
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Kim S, Shin J, Oh H, Ahn S, Kim N, Heo WD. An inducible system for in vitro and in vivo Fas activation using FKBP-FRB-rapamycin complex. Biochem Biophys Res Commun 2019; 523:473-480. [PMID: 31882118 DOI: 10.1016/j.bbrc.2019.12.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 12/15/2019] [Indexed: 11/16/2022]
Abstract
The inducible activation system is valuable for investigating spatiotemporal roles of molecules. A chemically inducible activation system for Fas (CD95/APO-1), which works efficiently to induce apoptosis and leads non-apoptotic pathways, has not yet been developed. Here, we engineered a rapamycin-induced dimerization system of Fas consisting of FKBP and FRB proteins. Treatment of rapamycin specifically induces cellular apoptosis. In neurons and cells with high c-FLIP expression, rapamycin-induced Fas activation triggered the activation of the non-apoptotic pathway components instead of cell death. Intracranial delivery of the system could be utilized to induce apoptosis of tumor cells upon rapamycin treatment. Our results demonstrate a novel inducible Fas activation system which operates with high efficiency and temporal precision in vitro and in vivo promising a potential therapeutic strategy.
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Affiliation(s)
- Seokhwi Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jongpil Shin
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Hyunsik Oh
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Sangphil Ahn
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Nury Kim
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Won Do Heo
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea; Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; KAIST Institute for the BioCentury, KAIST, Daejeon, Republic of Korea.
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56
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Li Y, Shen F, Bao Y, Chen D, Lu H. Apoptotic effects of rhein through the mitochondrial pathways, two death receptor pathways, and reducing autophagy in human liver L02 cells. ENVIRONMENTAL TOXICOLOGY 2019; 34:1292-1302. [PMID: 31436023 DOI: 10.1002/tox.22830] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 07/22/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Rhein (4,5-dihydroxyanthraquinone-2-carboxylic acid) is a major component of many medicinal herbs such as Rheum palmatum L. and Polygonum multiflorum. Despite being widely used, intoxication cases associated with rhein-containing herbs are often reported. Currently, there are no available reports addressing the effects of rhein on apoptosis in human liver L02 cells. Thus, the aim of this study is to determine the cytotoxic effects and the underlying mechanism of rhein on human normal liver L02 cells. In the present study, the methyl thiazolyl tetrazolium assay demonstrated that rhein decreased the viability of L02 cells in dose-dependent and time-dependent ways. Rhein was found to trigger apoptosis in L02 cells as shown by Annexin V-fluoresceine isothiocyanate (FITC) apoptosis detection kit and cell mitochondrial membrane potential (MMP) assay, with nuclear morphological changes demonstrated by Hoechst 33258 staining. Detection of intracellular superoxide dismutase activity, lipid oxidation (malondialdehyde) content, and reactive oxygen species (ROS) levels showed that apoptosis was associated with oxidative stress. Moreover, it was observed that the mechanism implicated in rhein-induced apoptosis was presumably via the death receptor pathway and the mitochondrial pathway, as illustrated by upregulation of TNF-α, TNFR1, TRADD, and cleaved caspase-3, and downregulation of procaspase-8, and it is suggested that rhein may increase hepatocyte apoptosis by activating the increase of TNF-α level. Meanwhile, rhein upregulates the expression of Bax and downregulates the expression of procaspase-9 and -3, and it is suggested that the mitochondrial pathway is activated and rhein-induced apoptosis may be involved. In addition, we also want to explore whether rhein-induced apoptosis is related to the autophagic changes induced by rhein. The results showed that rhein treatment increased P62 and decreased LC3-II and beclin-1, which means that autophagy was weakened. The results of our studies indicated that rhein induced caspase-dependent apoptosis via both the Fas death pathway and the mitochondrial pathway by generating ROS, and meanwhile the autophagy tended to weaken.
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Affiliation(s)
- Yanglei Li
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fang Shen
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yiqi Bao
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Dongming Chen
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Hong Lu
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
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57
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Shlomovitz I, Speir M, Gerlic M. Flipping the dogma - phosphatidylserine in non-apoptotic cell death. Cell Commun Signal 2019; 17:139. [PMID: 31665027 PMCID: PMC6819419 DOI: 10.1186/s12964-019-0437-0] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/10/2019] [Indexed: 12/18/2022] Open
Abstract
The exposure of phosphatidylserine (PS) on the outer plasma membrane has long been considered a unique feature of apoptotic cells. Together with other "eat me" signals, it enables the recognition and phagocytosis of dying cells (efferocytosis), helping to explain the immunologically-silent nature of apoptosis. Recently, however, PS exposure has also been reported in non-apoptotic forms of regulated inflammatory cell death, such as necroptosis, challenging previous dogma. In this review, we outline the evidence for PS exposure in non-apoptotic cells and extracellular vesicles (EVs), and discuss possible mechanisms based on our knowledge of apoptotic-PS exposure. In addition, we examine the outcomes of non-apoptotic PS exposure, including the reversibility of cell death, efferocytosis, and consequent inflammation. By examining PS biology, we challenge the established approach of distinguishing apoptosis from other cell death pathways by AnnexinV staining of PS externalization. Finally, we re-evaluate how PS exposure is thought to define apoptosis as an immunologically silent process distinct from other non-apoptotic and inflammatory cell death pathways. Ultimately, we suggest that a complete understanding of how regulated cell death processes affect the immune system is far from being fully elucidated.
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Affiliation(s)
- Inbar Shlomovitz
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mary Speir
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168 Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC 3800 Australia
| | - Motti Gerlic
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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58
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Targeting Apoptotic Pathways in Acute Myeloid Leukaemia. Cancers (Basel) 2019; 11:cancers11111660. [PMID: 31717784 PMCID: PMC6895902 DOI: 10.3390/cancers11111660] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/21/2019] [Accepted: 10/22/2019] [Indexed: 12/11/2022] Open
Abstract
Acute Myeloid Leukaemia is a devastating disease that continues to have a poor outcome for the majority of patients. In recent years, however, a number of drugs have received FDA approval, following on from successful clinical trial results. This parallels the characterization of the molecular landscape of Acute Myeloid Leukaemia (AML) over the last decade, which has led to the development of drugs targeting newly identified recurring mutations. In addition, basic biological research into the pathobiology of AML has identified aberrant programmed cell death pathways in AML. Following on from successful outcomes in lymphoid malignancies, drugs targeting the B Cell Lymphoma 2 (BCL-2) family of anti-apoptotic proteins have been explored in AML. In this review, we will outline the preclinical and clinical work to date supporting the role of drugs targeting BCL-2, with Venetoclax being the most advanced to date. We will also highlight rationale combinations using Venetoclax, ongoing clinical trials and biomarkers of response identified from the early phase clinical trials performed.
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59
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Choo Z, Loh AHP, Chen ZX. Destined to Die: Apoptosis and Pediatric Cancers. Cancers (Basel) 2019; 11:cancers11111623. [PMID: 31652776 PMCID: PMC6893512 DOI: 10.3390/cancers11111623] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/20/2019] [Accepted: 10/22/2019] [Indexed: 01/10/2023] Open
Abstract
Apoptosis (programmed cell death) is a systematic and coordinated cellular process that occurs in physiological and pathophysiological conditions. Sidestepping or resisting apoptosis is a distinct characteristic of human cancers including childhood malignancies. This review dissects the apoptosis pathways implicated in pediatric tumors. Understanding these pathways not only unraveled key molecules that may serve as potential targets for drug discovery, but also molecular nodes that integrate with other signaling networks involved in processes such as development. This review presents current knowledge of the complex regulatory system that governs apoptosis with respect to other processes in pediatric cancers, so that fresh insights may be derived regarding treatment resistance or for more effective treatment options.
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Affiliation(s)
- Zhang'e Choo
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore.
| | - Amos Hong Pheng Loh
- VIVA-KKH Pediatric Brain and Solid Tumor Program, KK Women's and Children's Hospital, Singapore 229899, Singapore.
- Department of Pediatric Surgery, KK Women's and Children's Hospital, Singapore 229899, Singapore.
| | - Zhi Xiong Chen
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore.
- VIVA-KKH Pediatric Brain and Solid Tumor Program, KK Women's and Children's Hospital, Singapore 229899, Singapore.
- National University Cancer Institute, Singapore, Singapore 119074, Singapore.
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60
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Jung KT, Oh SH. Polyubiquitination of p62/SQSTM1 is a prerequisite for Fas/CD95 aggregation to promote caspase-dependent apoptosis in cadmium-exposed mouse monocyte RAW264.7 cells. Sci Rep 2019; 9:12240. [PMID: 31439879 PMCID: PMC6706394 DOI: 10.1038/s41598-019-48684-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 08/01/2019] [Indexed: 12/19/2022] Open
Abstract
Cadmium(Cd) induces cytotoxicity via autophagy-induced apoptosis in non-activated mouse monocytes; however, the molecular mechanism remains unclear. Here, we show that autophagy induces Fas (CD95/APO-1)-mediated apoptosis by promoting accumulation of p62/SQSTM1 in response to Cd. Cd produced tumor necrosis factor (TNF)-α, peaking at 6 h, and exhibiting a concentration-dependent increase. Immunoblot analysis revealed polyubiquitinated (polyUb) full-length Fas (antibody clone G-9) and reduced cytosolic Fas (antibody clone M-20) in Cd-exposed RAW264.7 cells. The accumulation of polyUb-Fas was transient and positively correlated with polyUb-p62 and polyUb-proteins. Autophagy inhibition via chemical and genetic modulation suppressed Cd-induced polyUb-p62, polyUb-Fas, and polyUb-protein levels, whereas the level of cytosolic Fas recovered to that of the control. Immunofluorescence (IF) staining for full-length Fas, p62, and ubiquitin revealed an aggregated pattern in Cd-induced apoptotic cells, which was inhibited by blocking autophagy. Fas colocalized with microtubule-associated protein 1 light chain (LC)-3B. IF staining and immunoprecipitation assays revealed colocalization and interaction among p62, Ub, and Fas. Knockdown of p62 reduced the binding of Ub and Fas. Together, these data suggest that polyUb-p62 targets Fas and recruits it to autophagosomes, where Fas transiently aggregates to promote apoptosis and is degraded with polyUb-p62. In conclusion, autophagy regulates C-terminal cytosolic Fas aggregation via p62 polyubiquitination, which is required for apoptosis and may play a critical role in the production of select cytokines.
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Affiliation(s)
- Ki-Tae Jung
- Department of Anesthesiology and Pain Medicine, School of Medicine, Chosun University, 309 Pilmundaero, Dong-gu, Gwangju, 501-759, Korea
| | - Seon-Hee Oh
- School of Medicine, Chosun University, 309 Pilmundaero, Dong-gu, Gwangju, 501-759, Korea.
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61
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Zhao L, Ren C, Chen T, Sun H, Wu X, Jiang X, Huang W. The first cloned sea cucumber FADD from Holothuria leucospilota: Molecular characterization, inducible expression and involvement of apoptosis. FISH & SHELLFISH IMMUNOLOGY 2019; 89:548-554. [PMID: 30991146 DOI: 10.1016/j.fsi.2019.04.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/29/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
In this study, a sea cucumber Fas-associated death domain (FADD) named HLFADD was first cloned from Holothuria leucospilota. The full-length cDNA of HLFADD is 2137 bp in size, containing a 116-bp 5'-untranslated region (UTR), a 1334-bp 3'-UTR and a 687-bp open reading frame (ORF) encoding a protein of 228 amino acids with a deduced molecular weight of 26.42 kDa. HLFADD protein contains a conserved death effector domain at its N-terminal and a conserved death domain at its C-terminal, structurally similar to its counterparts in vertebrates. The over-expressed HLFADD protein could induce apoptosis in HEK293 cells, suggesting a possible death receptor-mediated apoptosis pathway in echinoderms adapted with FADD. Moreover, HLFADD mRNA is ubiquitously expressed in all examined tissues, with the highest transcript level in the coelomocytes, followed by intestine. In vitro experiments performed in the H. leucospilota coelomocytes, the expression of HLFADD mRNA was significantly up-regulated by lipopolysaccharides (LPS) or polyriboinosinic-polyribocytidylic acid [poly (I:C)] challenge, suggesting that HLFADD might play important roles in the innate immune defense of sea cucumber against the invasion of bacteria and viruses.
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Affiliation(s)
- Lin Zhao
- Guangdong Provincial Key Laboratory of Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
| | - Chunhua Ren
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China.
| | - Ting Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China.
| | - Hongyan Sun
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China.
| | - Xiaofen Wu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China.
| | - Xiao Jiang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China.
| | - Wen Huang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China.
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62
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Xiang Q, Yang B, Li L, Qiu B, Qiu C, Gao X, Zhou H(J, Min W. Critical role of Lin28-TNFR2 signalling in cardiac stem cell activation and differentiation. J Cell Mol Med 2019; 23:0. [PMID: 30734494 PMCID: PMC6433861 DOI: 10.1111/jcmm.14202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/04/2019] [Accepted: 01/15/2019] [Indexed: 12/28/2022] Open
Abstract
Tumour necrotic factor receptor-2 (TNFR2) has been to be cardiac-protective and is expressed in cardiac progenitor cells. Our goal is to define the mechanism for TNFR2-mediated cardiac stem cell activation and differentiation. By employing a protocol of in vitro cardiac stem cell (CSC) differentiation from human inducible pluripotent stem cell (hiPSC), we show that expression of TNFR2 precedes expression of CSC markers followed by expression of mature cardiomyocyte proteins. Activation of TNFR2 by a specific agonist promotes whereas inhibition of TNFR2 by neutralizing antibody diminishes hiPSC-based CSC differentiation. Interestingly, pluripotent cell factor RNA-binding protein Lin28 enhances TNFR2 protein expression in early CSC activation by directly binding to a conserved Lin28-motif within the 3'UTR of Tnfr2 mRNA. Furthermore, inhibition of Lin28 blunts TNFR2 expression and TNFR2-dependent CSC activation and differentiation. Our study demonstrates a critical role of Lin28-TNFR2 axis in CSC activation and survival, providing a novel strategy to enhance stem cell-based therapy for the ischaemic heart diseases.
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Affiliation(s)
- Qiuling Xiang
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
- Translational Medicine Center, the First Affiliated HospitalSun Yat‐sen UniversityGuangzhouGuangdongChina
- Zhongshan School of MedicineSun Yat‐sen UniversityGuangzhouGuangdongChina
- Center for Stem Cell Biology and Tissue EngineeringKey Laboratory for Stem Cells and Tissue EngineeringMinistry of Education, Sun Yat‐sen UniversityGuangzhouGuangdongChina
| | - Bicheng Yang
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
| | - Li Li
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
- Translational Medicine Center, the First Affiliated HospitalSun Yat‐sen UniversityGuangzhouGuangdongChina
- Zhongshan School of MedicineSun Yat‐sen UniversityGuangzhouGuangdongChina
| | - Bin Qiu
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
| | - Caihong Qiu
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
| | - Xiao‐Bing Gao
- Department of Comparative Medicine and Obstetrics, Gynecology, and Reproductive SciencesYale University School of MedicineNew HavenConnecticut
| | - Huanjiao (Jenny) Zhou
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
| | - Wang Min
- Yale Stem CenterInterdepartmental Program in Vascular Biology and TherapeuticsDepartment of PathologyYale University School of MedicineNew HavenConnecticut
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Duan J, Cui J, Yang Z, Guo C, Cao J, Xi M, Weng Y, Yin Y, Wang Y, Wei G, Qiao B, Wen A. Neuroprotective effect of Apelin 13 on ischemic stroke by activating AMPK/GSK-3β/Nrf2 signaling. J Neuroinflammation 2019; 16:24. [PMID: 30709405 PMCID: PMC6357442 DOI: 10.1186/s12974-019-1406-7] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 01/11/2019] [Indexed: 01/01/2023] Open
Abstract
Background Previous studies had showed that Apelin 13 could protect against apoptosis induced by ischemic/reperfusion (I/R). However, the mechanisms whereby Apelin 13 protected brain I/R remained to be elucidated. The present study was designed to determine whether Apelin 13 provided protection through AMPK/GSK-3β/Nrf2 pathway. Methods In vivo, the I/R model was induced and Apelin 13 was given intracerebroventricularly 15 min before reperfusion. The neurobehavioral scores, infarction volumes, and some cytokines in the brain were measured. For in vitro study, PC12 cells were used. To clarify the mechanisms, proteases inhibitors or siRNA were used. Protein levels were investigated by western blotting. Results The results showed that Apelin 13 treatment significantly reduced infarct size, improved neurological outcomes, decreased brain edema, and inhibited cell apoptosis, oxidative stress, and neuroinflammation after I/R. Apelin 13 significantly increased the expression of Nrf2 and the phosphorylation levels of AMPK and GSK-3β. Furthermore, in cultured PC12 cells, the same protective effects were also observed. Silencing Nrf2 gene with its siRNA abolished the Apelin 13’s prevention of I/R-induced PC12 cell injury, oxidative stress, and inflammation. Inhibition of AMPK by its siRNA decreased the level of Apelin 13-induced Nrf2 expression and diminished the protective effects of Apelin 13. The interplay relationship between GSK-3β and Nrf2 was also verified with relative overexpression. Using selective inhibitors, we further identified the upstream of AMPK/GSK-3β/Nrf2 is AR/Gα/PLC/IP3/CaMKK. Conclusions In conclusion, the previous results showed that Apelin 13 protected against I/R-induced ROS-mediated inflammation and oxidative stress through activating the AMPK/GSK-3β pathway by AR/Gα/PLC/IP3/CaMKK signaling, and further upregulated the expression of Nrf2-regulated antioxidant enzymes.
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Affiliation(s)
- Jialin Duan
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China.,Department of Chinese Medicine, School of Life Science, Northwestern University, No. 229, Taibai Road, Xi'an, Shaanxi, China
| | - Jia Cui
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Zhifu Yang
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Chao Guo
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Jinyi Cao
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Miaomiao Xi
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Yan Weng
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Ying Yin
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Yanhua Wang
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Guo Wei
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Boling Qiao
- Department of Chinese Medicine, School of Life Science, Northwestern University, No. 229, Taibai Road, Xi'an, Shaanxi, China.
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, No. 127, Changle West Road, Xi'an, 710032, Shaanxi, China.
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Kuang X, Xiong J, Wang W, Li X, Lu T, Fang Q, Wang J. PIM inhibitor SMI-4a induces cell apoptosis in B-cell acute lymphocytic leukemia cells via the HO-1-mediated JAK2/STAT3 pathway. Life Sci 2019; 219:248-256. [PMID: 30658101 DOI: 10.1016/j.lfs.2019.01.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 01/03/2019] [Accepted: 01/14/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVES The serine/threonine PIM protein kinases are critical regulators of tumorigenesis in multiple cancers. However, whether PIMs are potential therapeutic targets for treating B-cell acute lymphocytic leukemia (B-ALL) remains unclear. Therefore, here, PIM expression was detected in B-ALL patients and the effects of SMI-4a, a pan-PIM small molecule inhibitor, were investigated in B-ALL cells. METHODS PIM1 and PIM2 expression in 26 newly diagnosed B-ALL cases was detected by real-time PCR and Western blot. B-ALL cells were treated with varied SMI-4a doses and the viability of treated cells was investigated using a cell-counting kit-8 (CCK-8) assay. Apoptosis and cell cycles were analyzed by flow cytometry. Western blot analysis was then used to explore the expression of apoptosis-related proteins and the JAK2/STAT3 pathway. RESULTS PIM1 and 2 were overexpressed in B-ALL patients with high HO-1 level. SMI-4a induced decreases in PIMs and HO-1 expressions and inhibited B-ALL cell viability. Treatment with SMI-4a induced apoptosis by downregulating Bcl-2, upregulating Bax and other antiapoptotic proteins, and decreasing protein levels of p-JAK2 and p-STAT3. In addition, upregulation of HO-1 alleviated decrease in p-JAK2 and p-STAT3 expression, reduced SMI-4a-induced apoptosis of B-ALL cells, and influenced B-ALL cell survival. CONCLUSIONS PIMs were highly expressed in B-ALL patients. SMI-4a inhibited B-ALL proliferation and induced apoptosis via the HO-1-mediated JAK2/STAT3 pathway. SMI-4a might be applicable for treatment of B-ALL cells.
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Affiliation(s)
- Xingyi Kuang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Guizhou Province Hematopoietic Stem Cell Transplantation Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Key Laboratory of Hematological Disease Diagnostic Treat Centre of Guizhou Province, Guiyang, PR China
| | - Jie Xiong
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Guizhou Province Hematopoietic Stem Cell Transplantation Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Key Laboratory of Hematological Disease Diagnostic Treat Centre of Guizhou Province, Guiyang, PR China
| | - Weili Wang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Guizhou Province Hematopoietic Stem Cell Transplantation Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Key Laboratory of Hematological Disease Diagnostic Treat Centre of Guizhou Province, Guiyang, PR China
| | - Xinyao Li
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Guizhou Province Hematopoietic Stem Cell Transplantation Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Key Laboratory of Hematological Disease Diagnostic Treat Centre of Guizhou Province, Guiyang, PR China
| | - Tingting Lu
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Guizhou Province Hematopoietic Stem Cell Transplantation Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Key Laboratory of Hematological Disease Diagnostic Treat Centre of Guizhou Province, Guiyang, PR China
| | - Qin Fang
- Department of Pharmacy, The Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang, Guizhou, PR China
| | - Jishi Wang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Guizhou Province Hematopoietic Stem Cell Transplantation Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, PR China; Key Laboratory of Hematological Disease Diagnostic Treat Centre of Guizhou Province, Guiyang, PR China.
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Mansouri S, Patel S, Katikaneni DS, Blaauboer SM, Wang W, Schattgen S, Fitzgerald K, Jin L. Immature lung TNFR2 - conventional DC 2 subpopulation activates moDCs to promote cyclic di-GMP mucosal adjuvant responses in vivo. Mucosal Immunol 2019; 12:277-289. [PMID: 30327534 PMCID: PMC6301145 DOI: 10.1038/s41385-018-0098-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 02/04/2023]
Abstract
Cyclic dinucleotides (CDNs), including cyclic di-GMP (CDG), are promising vaccine adjuvants in preclinical/clinical trials. The in vivo mechanisms of CDNs are not clear. Here we investigated the roles of lung DC subsets in promoting CDG mucosal adjuvant responses in vivo. Using genetically modified mice and adoptive cell transfer, we identified lung conventional DC 2 (cDC2) as the central player in CDG mucosal responses. We further identified two functionally distinct lung cDC2 subpopulations: TNFR2+pRelB+ and TNFR2-pRelB- cDC2. The TNFR2+ cDC2 were mature and migratory upon intranasal CDG administration while the TNFR2- cDC2 were activated but not mature. Adoptive cell transfer showed that TNFR2- cDC2 mediate the antibody responses of CDG, while the TNFR2+ cDC2 generate Th1/17 responses. Mechanistically, immature TNFR2- cDC2 activate monocyte-derived DCs (moDCs), which do not take up intranasally administered CDG. moDCs promote CDG-induced generation of T follicular helper- and germinal center B cells in the lungs. Our data revealed a previously undescribed in vivo mode of DCs action, whereby an immature lung TNFR2- cDC2 subpopulation directs the non-migratory moDCs to generate CDG mucosal responses in the lung.
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Affiliation(s)
- Samira Mansouri
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY, 12208, USA
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Seema Patel
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Divya S Katikaneni
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Steven M Blaauboer
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY, 12208, USA
| | - Wei Wang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Stefan Schattgen
- Program in Innate Immunity, Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Katherine Fitzgerald
- Program in Innate Immunity, Division of Infectious Disease and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Lei Jin
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, 32610, USA.
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Involvement of calcium-sensing receptor activation in the alleviation of intestinal inflammation in a piglet model by dietary aromatic amino acid supplementation. Br J Nutr 2018; 120:1321-1331. [PMID: 30375295 DOI: 10.1017/s0007114518002891] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Ca2+-sensing receptor (CaSR) represents a potential therapeutic target for inflammatory bowel diseases and strongly prefers aromatic amino acid ligands. We investigated the regulatory effects of dietary supplementation with aromatic amino acids - tryptophan, phenylalanine and tyrosine (TPT) - on the CaSR signalling pathway and intestinal inflammatory response. The in vivo study was conducted with weanling piglets using a 2 × 2 factorial arrangement in a randomised complete block design. Piglets were fed a basal diet or a basal diet supplemented with TPT and with or without inflammatory challenge. The in vitro study was performed in porcine intestinal epithelial cell line to investigate the effects of TPT on inflammatory response using NPS-2143 to inhibit CaSR. Dietary supplementation of TPT alleviated histopathological injury and decreased myeloperoxidase activity in intestine challenged with lipopolysaccharide. Dietary supplementation of TPT decreased serum concentration of pro-inflammatory cytokines (IL-1β, IL-6, IL-8, IL-12, granulocyte-macrophage colony-stimulating factor, TNF-α), as well as the mRNA abundances of pro-inflammatory cytokines in intestine but enhanced anti-inflammatory cytokines IL-4 and transforming growth factor-β mRNA levels compared with pigs fed control diet and infected by lipopolysaccharide. Supplementation of TPT increased CaSR and phospholipase Cβ2 protein levels, but decreased inhibitor of NF-κB kinase α/β and inhibitor of NF-κB (IκB) protein levels in the lipopolysaccharide-challenged piglets. When the CaSR signalling pathway was blocked by NPS-2143, supplementation of TPT decreased the CaSR protein level, but enhanced phosphorylated NF-κB and IκB levels in IPEC-J2 cells. To conclude, supplementation of aromatic amino acids alleviated intestinal inflammation as mediated through the CaSR signalling pathway.
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Lee BS, Kim YS, Kim HJ, Kim DH, Won HR, Kim YS, Kim CH. HDAC4 degradation by combined TRAIL and valproic acid treatment induces apoptotic cell death of TRAIL-resistant head and neck cancer cells. Sci Rep 2018; 8:12520. [PMID: 30131570 PMCID: PMC6104079 DOI: 10.1038/s41598-018-31039-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 08/03/2018] [Indexed: 01/30/2023] Open
Abstract
Although TRAIL can directly induce cell death in some cancer cells, it appears that TRAIL resistance exists in many cancers. This study focuses on anti-cancer drugs for TRAIL-resistant head and neck cancer (HNC) to provide further progress toward effective cancer therapy. Results indicate in TRAIL-resistant HNC cells, that combined TRAIL and VPA treatment greatly reduced cell viability and therefore induced cell death, relative to treatment with TRAIL or VPA alone. A caspase-dependent signaling pathway was demonstrated, and combined treatment with TRAIL and VPA also significantly decreased the expression of HDAC4. When we pretreated cells with z-VAD followed by combined treatment with TRAIL and VPA, cell death was blocked with no reduction in expression of HDAC4. To confirm that cell death involved HDAC4 in HNC cells, we knocked down expression of HDAC4 with siRNA, followed by treatment with TRAIL and VPA. Results showed that loss of HDAC4 sensitized the TRAIL-resistant HNC cells to apoptotic cell death. Finally, we showed elevated expression of HDAC4 in HNC tissues compared to normal tissues obtained from the same patients. In conclusion, we suggest that combined VPA and TRAIL treatment may be a promising therapy for HNC via HDAC4 degradation.
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Affiliation(s)
- Bok-Soon Lee
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea
| | - Yeon Soo Kim
- Department of Otorhinolaryngology, College of Medicine, Konyang University Hospital, Konyang University Myunggok Medical Research Institute, Daejeon, 35365, Republic of Korea
| | - Haeng-Jun Kim
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea.,Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Dae-Ho Kim
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea.,Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Ho-Ryun Won
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea.,Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Yong-Sung Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Chul-Ho Kim
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea. .,Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea.
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Costimulation of Murine Osteoblasts with Interferon- γ and Tumor Necrosis Factor- α Induces Apoptosis through Downregulation of Bcl-2 and Release of Cytochrome c from Mitochondria. Mediators Inflamm 2018; 2018:3979606. [PMID: 30158833 PMCID: PMC6109523 DOI: 10.1155/2018/3979606] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 07/18/2018] [Indexed: 01/05/2023] Open
Abstract
During chronic inflammation from diseases, such as periodontal disease, the proinflammatory cytokines interferon-gamma (IFNγ) and tumor necrosis factor-α (TNFα) alter bone remodeling. To elucidate the underlying molecular mechanisms, we investigated the effect of IFNγ and TNFα on the proliferation and survival of clonal MC3T3-E1 mouse osteoblasts. We found that although IFNγ or TNFα alone affected cell growth and survival only marginally, costimulation with both synergistically inhibited cell growth and reduced cell viability. The diminished cell viability was due to apoptosis, as indicated by increased TUNEL staining and elevated caspase 3, 8, and 9 activities. Western blot also showed that costimulation with IFNγ and TNFα elicited cytochrome c release and downregulated B cell lymphoma 2 (Bcl-2) expression without affecting Bcl-2-associated X (Bax) protein expression. Furthermore, stable Bcl-2 overexpression significantly alleviated cell death following costimulation. Collectively, these results suggested that IFNγ and TNFα elicited osteoblast apoptosis via cytochrome c release from damaged mitochondria, caspase activation, and Bcl-2 downregulation.
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Delavatine A, an unusual isoquinoline alkaloid exerts anti-inflammation on LPS-induced proinflammatory cytokines production by suppressing NF-κB activation in BV-2 microglia. Biochem Biophys Res Commun 2018; 502:202-208. [DOI: 10.1016/j.bbrc.2018.05.144] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 05/20/2018] [Indexed: 12/11/2022]
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70
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Wu S, Dong K, Wang J, Bi Y. Tumor necrosis factor alpha improves glucose homeostasis in diabetic mice independent with tumor necrosis factor receptor 1 and tumor necrosis factor receptor 2. Endocr J 2018; 65:601-609. [PMID: 29576600 DOI: 10.1507/endocrj.ej17-0539] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Type 2 diabetes is a serious threat to human health all over the world. It is particularly important to look for the pathogenesis of type 2 diabetes. Researchers have found that obesity was associated with a broad chronic inflammatory response and type 2 diabetes. And tumor necrosis factor alpha (TNF-α) is one of the most important cytokines related with obesity. To explore the functional role of TNF-α in the regulation of glucose homeostasis, TNF-α receptor 1 and TNF-α receptor 2 double knockout (TNFR1/R2 DKO) mouse model were used in our study. After high fat diet (HFD) feeding, we detected that the insulin resistance was dramatically improved and circulated TNF-α was upregulated in TNFR1/R2 DKO mice. Surprisingly, glucose homeostasis was worsened, when we down regulate the levels of plasma TNF-α in TNFR1/R2 DKO mice by administering Adeno associated virus-shRNA-TNF-α (AAV-shTNF-α). Subsequently, in ob/ob mice, we confirmed that the glucose homeostasis could be improved when we up regulate the levels of plasma TNF-α by administering Adeno associated virus-TNF-α (AAV-TNF-α). Our findings suggested that TNFR1 and TNFR2 may not be the only receptors for TNF-α and TNF-α probably plays a positive role in reducing insulin resistance via a TNFRs-independent way in diabetic mice.
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Affiliation(s)
- Shanshan Wu
- Department of Endocrinology, Bengbu Medical College, The First Affilited Hospital of Bengbu Medical College, Anhui, 233000, China
| | - Kai Dong
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Jiajia Wang
- Department of Endocrinology, Medical College of Soochow University, Jiangsu 215213, China
| | - Yaxin Bi
- Department of Endocrinology, Bengbu Medical College, The First Affilited Hospital of Bengbu Medical College, Anhui, 233000, China
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71
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Li Y, Sun Y, Cai M, Zhang H, Gao N, Huang H, Cui S, Yao D. Fas Ligand Gene (Faslg) Plays an Important Role in Nerve Degeneration and Regeneration After Rat Sciatic Nerve Injury. Front Mol Neurosci 2018; 11:210. [PMID: 29970988 PMCID: PMC6018423 DOI: 10.3389/fnmol.2018.00210] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/28/2018] [Indexed: 01/09/2023] Open
Abstract
Wallerian degeneration (WD) is associated with changes in the expression levels of a large number of genes. However, the effects of these up- or down-regulated genes are poorly understood. We have reported some key factors that are differentially regulated during WD in our previous research. Here, we explored the roles of Fas ligand gene (Faslg) in WD after rat sciatic nerve injury. The data showed that Faslg was up-regulated in injured nerves. Expression changed of Faslg in Schwann cells (SCs) resulted in alterations in the release of related factors. Silencing or overexpression of Faslg affected SC proliferation, migration, and apoptosis through β-catenin, nuclear factor-κB (NF-κB), and caspase-3 pathways in vivo and in vitro. Our data suggest that Faslg is a key regulatory gene that affects nerve repair and regeneration in peripheral nerve injury. This study sheds new light on the effects of Faslg on peripheral nerve degeneration and/or regeneration.
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Affiliation(s)
- Yuting Li
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Yuhua Sun
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China.,Genetic Laboratory, Lianyungang Maternal and Child Health Hospital, Lianyungang, China
| | - Min Cai
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Huanhuan Zhang
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Nannan Gao
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Huiwei Huang
- School of Medicine, Nantong University, Nantong, China
| | - Shusen Cui
- Hand Surgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Dengbing Yao
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
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The promise and challenges of immune agonist antibody development in cancer. Nat Rev Drug Discov 2018; 17:509-527. [PMID: 29904196 DOI: 10.1038/nrd.2018.75] [Citation(s) in RCA: 252] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Immune cell functions are regulated by co-inhibitory and co-stimulatory receptors. The first two generations of cancer immunotherapy agents consist primarily of antagonist antibodies that block negative immune checkpoints, such as programmed cell death protein 1 (PD1) and cytotoxic T lymphocyte protein 4 (CTLA4). Looking ahead, there is substantial promise in targeting co-stimulatory receptors with agonist antibodies, and a growing number of these agents are making their way through various stages of development. This Review discusses the key considerations and potential pitfalls of immune agonist antibody design and development, their differentiating features from antagonist antibodies and the landscape of agonist antibodies in clinical development for cancer treatment.
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New 1,2,4-triazole-Chalcone hybrids induce Caspase-3 dependent apoptosis in A549 human lung adenocarcinoma cells. Eur J Med Chem 2018; 151:705-722. [DOI: 10.1016/j.ejmech.2018.03.073] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 03/23/2018] [Accepted: 03/24/2018] [Indexed: 11/30/2022]
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74
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Gaffer GG, Elgawish RA, Abdelrazek HMA, Ebaid HM, Tag HM. Dietary soy isoflavones during pregnancy suppressed the immune function in male offspring albino rats. Toxicol Rep 2018; 5:296-301. [PMID: 29854598 PMCID: PMC5978017 DOI: 10.1016/j.toxrep.2018.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 12/13/2022] Open
Abstract
Less attention has been paid to the immune effects of phytoestrogens during pregnancy on the first generation. Soy isoflavones fed to pregnant rats could modulate the immune response of the male offspring. Isoflavones reduced spleen and thymus weights in rats born to dams fed dietary soy. Soy isoflavones possibly mediated its effect through reduction of IFN-γ that interacts with the IL-12 production pathway.
Phytoestrogens have an impact on both animals and humans due to use of legumes in animal diets as well as the increase of vegetarian diets in some human populations. Phytoestrogens thought to have varieties of adverse effects, among which immune system was involved. The present study aimed to investigate the effect of prenatal exposure to dietary soy isoflavones on some immunological parameters in male albino rat offspring. The pregnant rats were divided to three groups (12/group). Control group (free soy isoflavones), low soy isoflavones group (6.5%) and high soy isoflavones group (26%). The male offspring cell-mediated immune response was determined using phytohemagglutinin (PHA) injection and the intumesce index which was calculated on postnatal day 50 (PND 50). At PND 50, blood samples were collected for interleukin 12 (IL-12), interferon γ (IFN-γ) and tumor necrosis factor α (TNF-α) determination. Spleen, thymus, and PHA injected footpads were fixed for histopathology. Intumesce index, IL-12, IFN-γ, spleen and thymus relative weights were significantly (P < 0.05) decreased in offspring born to dams fed low and high dietary soy isoflavones. In contrary, TNF-α was significantly (P < 0.05) increased in offspring born to dams fed high dietary soy isoflavones. Spleen of rats born to dams fed high dose of dietary soy isoflavones showed coagulative necrosis in white pulp. In conclusion, male offspring born to dams fed different levels of soy isoflavones showed marked immunosuppression after PHA stimulation. This effect was mediated through the reduced IFN-γ that interacts with the IL-12 production pathway.
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Affiliation(s)
- Ghada Gamal Gaffer
- Department of Zoology, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Rania Abdelrahman Elgawish
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Heba M A Abdelrazek
- Department of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Hala M Ebaid
- Department of Zoology, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Hend M Tag
- Department of Zoology, Faculty of Science, Suez Canal University, Ismailia, Egypt.,University of Jeddah Branch of Khulais Governorate - Girls Section, Saudi Arabia
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Horn S, Hughes MA, Schilling R, Sticht C, Tenev T, Ploesser M, Meier P, Sprick MR, MacFarlane M, Leverkus M. Caspase-10 Negatively Regulates Caspase-8-Mediated Cell Death, Switching the Response to CD95L in Favor of NF-κB Activation and Cell Survival. Cell Rep 2018; 19:785-797. [PMID: 28445729 PMCID: PMC5413585 DOI: 10.1016/j.celrep.2017.04.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 05/30/2016] [Accepted: 04/03/2017] [Indexed: 12/12/2022] Open
Abstract
Formation of the death-inducing signaling complex (DISC) initiates extrinsic apoptosis. Caspase-8 and its regulator cFLIP control death signaling by binding to death-receptor-bound FADD. By elucidating the function of the caspase-8 homolog, caspase-10, we discover that caspase-10 negatively regulates caspase-8-mediated cell death. Significantly, we reveal that caspase-10 reduces DISC association and activation of caspase-8. Furthermore, we extend our co-operative/hierarchical binding model of caspase-8/cFLIP and show that caspase-10 does not compete with caspase-8 for binding to FADD. Utilizing caspase-8-knockout cells, we demonstrate that caspase-8 is required upstream of both cFLIP and caspase-10 and that DISC formation critically depends on the scaffold function of caspase-8. We establish that caspase-10 rewires DISC signaling to NF-κB activation/cell survival and demonstrate that the catalytic activity of caspase-10, and caspase-8, is redundant in gene induction. Thus, our data are consistent with a model in which both caspase-10 and cFLIP coordinately regulate CD95L-mediated signaling for death or survival.
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Affiliation(s)
- Sebastian Horn
- Section of Molecular Dermatology, Department of Dermatology, Venereology, and Allergology, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
| | - Michelle A Hughes
- MRC Toxicology Unit, Hodgkin Building, PO Box 138, Lancaster Road, Leicester LE1 9HN, UK
| | - Ramon Schilling
- Section of Molecular Dermatology, Department of Dermatology, Venereology, and Allergology, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Carsten Sticht
- Center for Medical Research, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Tencho Tenev
- The Breakthrough Toby Robins Breast Cancer Research Centre, Institute of Cancer Research, Mary-Jean Mitchell Green Building, Chester Beatty Laboratories, Fulham Road, London SW3 6JB, UK
| | - Michaela Ploesser
- Section of Molecular Dermatology, Department of Dermatology, Venereology, and Allergology, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Pascal Meier
- The Breakthrough Toby Robins Breast Cancer Research Centre, Institute of Cancer Research, Mary-Jean Mitchell Green Building, Chester Beatty Laboratories, Fulham Road, London SW3 6JB, UK
| | - Martin R Sprick
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM gGmbH), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany.
| | - Marion MacFarlane
- MRC Toxicology Unit, Hodgkin Building, PO Box 138, Lancaster Road, Leicester LE1 9HN, UK.
| | - Martin Leverkus
- Section of Molecular Dermatology, Department of Dermatology, Venereology, and Allergology, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; Department of Dermatology and Allergology, Medical Faculty of the RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
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76
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Hamacher J, Hadizamani Y, Borgmann M, Mohaupt M, Männel DN, Moehrlen U, Lucas R, Stammberger U. Cytokine-Ion Channel Interactions in Pulmonary Inflammation. Front Immunol 2018; 8:1644. [PMID: 29354115 PMCID: PMC5758508 DOI: 10.3389/fimmu.2017.01644] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/10/2017] [Indexed: 12/12/2022] Open
Abstract
The lungs conceptually represent a sponge that is interposed in series in the bodies’ systemic circulation to take up oxygen and eliminate carbon dioxide. As such, it matches the huge surface areas of the alveolar epithelium to the pulmonary blood capillaries. The lung’s constant exposure to the exterior necessitates a competent immune system, as evidenced by the association of clinical immunodeficiencies with pulmonary infections. From the in utero to the postnatal and adult situation, there is an inherent vital need to manage alveolar fluid reabsorption, be it postnatally, or in case of hydrostatic or permeability edema. Whereas a wealth of literature exists on the physiological basis of fluid and solute reabsorption by ion channels and water pores, only sparse knowledge is available so far on pathological situations, such as in microbial infection, acute lung injury or acute respiratory distress syndrome, and in the pulmonary reimplantation response in transplanted lungs. The aim of this review is to discuss alveolar liquid clearance in a selection of lung injury models, thereby especially focusing on cytokines and mediators that modulate ion channels. Inflammation is characterized by complex and probably time-dependent co-signaling, interactions between the involved cell types, as well as by cell demise and barrier dysfunction, which may not uniquely determine a clinical picture. This review, therefore, aims to give integrative thoughts and wants to foster the unraveling of unmet needs in future research.
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Affiliation(s)
- Jürg Hamacher
- Internal Medicine and Pneumology, Lindenhofspital, Bern, Switzerland.,Internal Medicine V - Pneumology, Allergology, Respiratory and Environmental Medicine, Faculty of Medicine, Saarland University, Saarbrücken, Germany.,Lungen- und Atmungsstiftung Bern, Bern, Switzerland
| | - Yalda Hadizamani
- Internal Medicine and Pneumology, Lindenhofspital, Bern, Switzerland.,Lungen- und Atmungsstiftung Bern, Bern, Switzerland
| | - Michèle Borgmann
- Internal Medicine and Pneumology, Lindenhofspital, Bern, Switzerland.,Lungen- und Atmungsstiftung Bern, Bern, Switzerland
| | - Markus Mohaupt
- Internal Medicine, Sonnenhofspital Bern, Bern, Switzerland
| | | | - Ueli Moehrlen
- Paediatric Visceral Surgery, Universitäts-Kinderspital Zürich, Zürich, Switzerland
| | - Rudolf Lucas
- Department of Pharmacology and Toxicology, Vascular Biology Center, Medical College of Georgia, Augusta, GA, United States
| | - Uz Stammberger
- Lungen- und Atmungsstiftung Bern, Bern, Switzerland.,Novartis Institutes for Biomedical Research, Translational Clinical Oncology, Novartis Pharma AG, Basel, Switzerland
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77
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Varfolomeev E, Vucic D. Intracellular regulation of TNF activity in health and disease. Cytokine 2018; 101:26-32. [DOI: 10.1016/j.cyto.2016.08.035] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 01/27/2023]
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78
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Mohankrishnan A, Parmar R, Bhurani V, Dalai SK. Lack of TNF-α signaling through p55 makes the mice more susceptible to acute infection but does not alter state of latency and reactivation of HSV-1. Virus Res 2018; 244:1-5. [DOI: 10.1016/j.virusres.2017.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/28/2017] [Accepted: 11/02/2017] [Indexed: 11/26/2022]
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79
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Tumor necrosis factor alpha in sleep regulation. Sleep Med Rev 2017; 40:69-78. [PMID: 29153862 DOI: 10.1016/j.smrv.2017.10.005] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/16/2017] [Accepted: 10/18/2017] [Indexed: 12/14/2022]
Abstract
This review details tumor necrosis factor alpha (TNF) biology and its role in sleep, and describes how TNF medications influence sleep/wake activity. Substantial evidence from healthy young animals indicates acute enhancement or inhibition of endogenous brain TNF respectively promotes and inhibits sleep. In contrast, the role of TNF in sleep in most human studies involves pathological conditions associated with chronic elevations of systemic TNF and disrupted sleep. Normalization of TNF levels in such patients improves sleep. A few studies involving normal healthy humans and their TNF levels and sleep are consistent with the animal studies but are necessarily more limited in scope. TNF can act on established sleep regulatory circuits to promote sleep and on the cortex within small networks, such as cortical columns, to induce sleep-like states. TNF affects multiple synaptic functions, e.g., its role in synaptic scaling is firmly established. The TNF-plasticity actions, like its role in sleep, can be local network events suggesting that sleep and plasticity share biochemical regulatory mechanisms and thus may be inseparable from each other. We conclude that TNF is involved in sleep regulation acting within an extensive tightly orchestrated biochemical network to niche-adapt sleep in health and disease.
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80
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Zhang H, Hassan YI, Renaud J, Liu R, Yang C, Sun Y, Tsao R. Bioaccessibility, bioavailability, and anti-inflammatory effects of anthocyanins from purple root vegetables using mono- and co-culture cell models. Mol Nutr Food Res 2017; 61. [PMID: 28691370 DOI: 10.1002/mnfr.201600928] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/05/2017] [Accepted: 05/30/2017] [Indexed: 01/21/2023]
Abstract
SCOPE Immune-inflammatory signaling and metabolic effects are the main pillars for bioactivity of anthocyanins derived from highly pigmented root vegetables. This study aims to assess the bioaccessibility and bioavailability of purple carrot and potato derived anthocyanins and the molecular mechanisms of their ability to ameliorate cellular inflammation in a mono- and co-culture cell models. METHODS AND RESULTS An in vitro gastrointestinal model was used and demonstrated bioaccessibility of 44.62 and 71.8% for anthocyanins of purple carrot and potato, respectively. These accessible anthocyanins significantly inhibited cellular inflammation in Caco-2 cells. Intact cyanidinglycoside or petunidinglycoside (respectively from carrots and potatoes) were transported across a transmembrane cell model and detected by LC-MS/MS. Computational docking and glucose uptake analyses suggested uptake of anthocyanins was mediated by hexose transporters. Subsequent experiment using an inflamed Caco-2 BBe1/THP-1 co-culture cell model showed these transported anthocyanins inhibited IL-8 and TNF-α secretion,and expression of pro-inflammatory cytokines by blocking NF-κB, and MAPK mediated inflammatory cellular signaling cascades, but with varying degrees due to structural features. CONCLUSION Anthocyanins from purple carrots and potatoes possess a promising anti-inflammatory effect in model gut system. They can be absorbed and act differently but are in general beneficial for inflammation-mediated diseases.
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Affiliation(s)
- Hua Zhang
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Yousef I Hassan
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Justin Renaud
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Ronghua Liu
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Cheng Yang
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Yong Sun
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Rong Tsao
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
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81
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Han BH, Lee YJ, Yoon JJ, Choi ES, Namgung S, Jin XJ, Jeong DH, Kang DG, Lee HS. Hwangryunhaedoktang exerts anti-inflammation on LPS-induced NO production by suppressing MAPK and NF-κB activation in RAW264.7 macrophages. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2017; 15:326-336. [DOI: 10.1016/s2095-4964(17)60350-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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82
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Pulmonary immunity to viruses. Clin Sci (Lond) 2017; 131:1737-1762. [PMID: 28667071 DOI: 10.1042/cs20160259] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/31/2017] [Accepted: 04/06/2017] [Indexed: 12/28/2022]
Abstract
Mucosal surfaces, such as the respiratory epithelium, are directly exposed to the external environment and therefore, are highly susceptible to viral infection. As a result, the respiratory tract has evolved a variety of innate and adaptive immune defenses in order to prevent viral infection or promote the rapid destruction of infected cells and facilitate the clearance of the infecting virus. Successful adaptive immune responses often lead to a functional state of immune memory, in which memory lymphocytes and circulating antibodies entirely prevent or lessen the severity of subsequent infections with the same virus. This is also the goal of vaccination, although it is difficult to vaccinate in a way that mimics respiratory infection. Consequently, some vaccines lead to robust systemic immune responses, but relatively poor mucosal immune responses that protect the respiratory tract. In addition, adaptive immunity is not without its drawbacks, as overly robust inflammatory responses may lead to lung damage and impair gas exchange or exacerbate other conditions, such as asthma or chronic obstructive pulmonary disease (COPD). Thus, immune responses to respiratory viral infections must be strong enough to eliminate infection, but also have mechanisms to limit damage and promote tissue repair in order to maintain pulmonary homeostasis. Here, we will discuss the components of the adaptive immune system that defend the host against respiratory viral infections.
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83
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Kajiwara K, Ogata SI, Tanihara M. Promotion of Neurite Outgrowth from Fetal Hippocampal Cells by TNF-α Receptor 1-Derived Peptide. Cell Transplant 2017; 14:665-672. [DOI: 10.3727/000000005783982639] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Cytokines such as tumor necrosis factor-α (TNF-α), FasL, and TNF-related apoptosis-inducing ligand (TRAIL) induce apoptosis or inflammation through binding to their specific receptors, TNFR1, Fas, and DR5, respectively. We have previously reported ligand-binding and cell death-inhibiting synthetic peptides, which were designed based on the crystal structure of a ligand–receptor complex and the homology of the amino acid sequence among the death receptor family members. Here we show that, among these death receptor-derived peptides, the TNFR1-derived peptide specifically arrested cell proliferation and promoted cell adhesion of fetal rat (E16) hippocampal cells, and promoted neurite outgrowth from hippocampus-derived neurospheres cultured with the addition of the peptide or cultured on a peptide-coated surface. Furthermore, among these death receptor-derived peptides, marked neurite outgrowth was observed only when the neurospheres were cultured on a TNFR1-derived peptide-conjugated covalently cross-linked alginate gel. The neurites from the neurospheres positively immunostained with an antibody against neurofilaments. These results suggest that the TNFR1-derived peptide promotes neuronal differentiation of the hippocampal neural stem cells and the TNFR1-derived peptide-conjugated covalently cross-linked alginate gel may be a useful material for assisting neural stem cell transplantation.
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Affiliation(s)
- Kazumi Kajiwara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan
| | - Shin-Ichi Ogata
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan
| | - Masao Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan
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84
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Incalza MA, D'Oria R, Natalicchio A, Perrini S, Laviola L, Giorgino F. Oxidative stress and reactive oxygen species in endothelial dysfunction associated with cardiovascular and metabolic diseases. Vascul Pharmacol 2017; 100:1-19. [PMID: 28579545 DOI: 10.1016/j.vph.2017.05.005] [Citation(s) in RCA: 744] [Impact Index Per Article: 106.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 05/21/2017] [Accepted: 05/31/2017] [Indexed: 12/13/2022]
Abstract
Reactive oxygen species (ROS) are reactive intermediates of molecular oxygen that act as important second messengers within the cells; however, an imbalance between generation of reactive ROS and antioxidant defense systems represents the primary cause of endothelial dysfunction, leading to vascular damage in both metabolic and atherosclerotic diseases. Endothelial activation is the first alteration observed, and is characterized by an abnormal pro-inflammatory and pro-thrombotic phenotype of the endothelial cells lining the lumen of blood vessels. This ultimately leads to reduced nitric oxide (NO) bioavailability, impairment of the vascular tone and other endothelial phenotypic changes collectively termed endothelial dysfunction(s). This review will focus on the main mechanisms involved in the onset of endothelial dysfunction, with particular focus on inflammation and aberrant ROS production and on their relationship with classical and non-classical cardiovascular risk factors, such as hypertension, metabolic disorders, and aging. Furthermore, new mediators of vascular damage, such as microRNAs, will be discussed. Understanding mechanisms underlying the development of endothelial dysfunction is an important base of knowledge to prevent vascular damage in metabolic and cardiovascular diseases.
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Affiliation(s)
- Maria Angela Incalza
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Rossella D'Oria
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Annalisa Natalicchio
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Sebastio Perrini
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Luigi Laviola
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Giorgino
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy.
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85
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Cai X, Cao C, Li J, Chen F, Zhang S, Liu B, Zhang W, Zhang X, Ye L. Inflammatory factor TNF-α promotes the growth of breast cancer via the positive feedback loop of TNFR1/NF-κB (and/or p38)/p-STAT3/HBXIP/TNFR1. Oncotarget 2017; 8:58338-58352. [PMID: 28938560 PMCID: PMC5601656 DOI: 10.18632/oncotarget.16873] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/15/2017] [Indexed: 01/07/2023] Open
Abstract
In the connection between inflammation and cancer development, tumor necrosis factor-alpha (TNF-α) contributes to the tumorigenesis. However, the underlying mechanism remains poorly understood. In this study, we report that TNF-α enhances the growth of breast cancer through up-regulation of oncoprotein hepatitis B X-interacting protein (HBXIP). Our data showed that the levels of TNF-α were positively related to those of HBXIP in clinical breast cancer tissues. Moreover, TNF-α could up-regulate HBXIP in breast cancer cells. Interestingly, silencing of TNF-α receptor 1 (TNFR1) blocked the effect of TNF-α on HBXIP. Mechanistically, we revealed that TNF-α could increase the activities of HBXIP promoter through activating transcriptional factor signal transducer and activator of transcription 3 (STAT3). In addition, nuclear factor kappa B (NF-κB) and/or p38 signaling increased the levels of p-STAT3 in the cells. Strikingly, HBXIP could also up-regulate TNFR1, forming a positive feedback loop of TNFR1/NF-κB (and/or p38)/p-STAT3/HBXIP/TNFR1. Notably, TNF-α was able to up-regulate TNFR1 through driving the loop. In function, we demonstrated that the knockdown of HBXIP remarkably abolished the growth of breast cancer mediated by TNF-α in vitro and in vivo. Thus, we conclude that TNF-α promotes the growth of breast cancer through the positive feedback loop of TNFR1/NF-κB (and/or p38)/p-STAT3/HBXIP/TNFR1.Our finding provides new insights into the mechanism by which TNF-α drives oncoprotein HBXIP in the development of breast cancer.
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Affiliation(s)
- Xiaoli Cai
- State Key Laboratory of Medicinal Chemical Biology, Department of Biochemistry, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Can Cao
- State Key Laboratory of Medicinal Chemical Biology, Department of Biochemistry, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jiong Li
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Fuquan Chen
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Shuqin Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Bowen Liu
- State Key Laboratory of Medicinal Chemical Biology, Department of Biochemistry, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Weiying Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Biochemistry, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xiaodong Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Lihong Ye
- State Key Laboratory of Medicinal Chemical Biology, Department of Biochemistry, College of Life Sciences, Nankai University, Tianjin 300071, China
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Ghorbani S, Talebi F, Ghasemi S, Jahanbazi Jahan Abad A, Vojgani M, Noorbakhsh F. miR-181 interacts with signaling adaptor molecule DENN/MADD and enhances TNF-induced cell death. PLoS One 2017; 12:e0174368. [PMID: 28323882 PMCID: PMC5360339 DOI: 10.1371/journal.pone.0174368] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 03/08/2017] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs are small noncoding RNAs, which regulate the expression of protein coding transcripts through mRNA degradation or translational inhibition. Numerous reports have highlighted the role of miRNAs in regulating cell death pathways including the expression of genes involved in the induction of apoptosis. Tumor necrosis factor alpha (TNF-α) is a proinflammatory cytokine which can send pro-death signals through its receptor TNFR1. Diverse adaptor molecules including DENN/MADD adaptor protein have been shown to modulate TNF-α pro-death signaling via recruitment of MAP kinases to TNFR1 and activation of pro-survival NFκB signaling. Herein, we investigated the role of microRNA-181 (miR-181) in regulating DENN/MADD expression levels and its subsequent effects on TNF-α-induced cell death. Using bioinformatics analyses followed by luciferase reporter assays we showed that miR-181 interacts with the 3’ UTR of DENN/MADD transcripts. miR-181 overexpression also led to decreased endogenous DENN/MADD mRNA levels in L929 murine fibroblasts. Flow cytometric analysis of miR-181 transfected cells showed this miRNA accentuates mitochondrial membrane potential loss caused by TNF-α. These findings were associated with enhanced apoptosis of L929 cells following TNF-α treatment. Overall, these data point to the potential role of miR-181 in regulating TNF-α pro-death signaling, which could be of importance from pathogenesis and therapeutic perspectives in inflammatory disorders associated with tissue degeneration and cell death.
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Affiliation(s)
- Samira Ghorbani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Shefa Neuroscience Research Institute, Khatam Al-Anbia Hospital, Tehran, Iran
| | - Farideh Talebi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sedigheh Ghasemi
- Shefa Neuroscience Research Institute, Khatam Al-Anbia Hospital, Tehran, Iran
| | | | - Mohammed Vojgani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farshid Noorbakhsh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
- * E-mail:
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87
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Liu C, Yang N, Chen X, Tversky J, Zhan J, Chehade M, Miller RL, Li XM. The Flavonoid 7,4'-Dihydroxyflavone Prevents Dexamethasone Paradoxical Adverse Effect on Eotaxin Production by Human Fibroblasts. Phytother Res 2017; 31:449-458. [PMID: 28102022 DOI: 10.1002/ptr.5767] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/06/2016] [Accepted: 12/18/2016] [Indexed: 01/04/2023]
Abstract
Eotaxin/CCL-11 is a major chemoattractant that contributes to eosinophilic inflammation in asthma. Glucocorticoids inhibit inflammation, but long-time exposure may cause paradoxical adverse effects by augmenting eotaxin/CCL-11production. The aim of this study was to determine if 7,4'-dihydroxyflavone (7,4'-DHF), the eotaxin/CCL11 inhibitor isolated from Glycyrrhiza uralensis, reduces in vitro eotaxin production induced by long-time dexamethasone (Dex) exposure, and if so, to elucidate the mechanisms of this inhibition. Human lung fibroblast-1 cells were used to identify the potency of 7,4'-DHF compared with other compounds from G. uralensis, to compare 7,4'-DHF with Dex on eotaxin production following 24-h short-time culture and 72-h longer-time (LT) culture, and to determine the effects of the 7,4'-DHF on Dex LT culture augmented eotaxin production and molecule mechanisms. 7,4'-DHF was the most potent eotaxin/CCL-11 inhibitor among the ten compounds and provided continued suppression. In contrast to short-time culture, Dex LT culture increased constitutively, and IL-4/TNF-α stimulated eotaxin/CCL11 production by human lung fibroblast-1 cells. This adverse effect was abrogated by 7,4'-DHF co-culture. 7,4'-DHF significantly inhibited Dex LT culture augmentation of p-STAT6 and impaired HDAC2 expression. This study demonstrated that 7,4'-DHF has the ability to consistently suppress eotaxin production and prevent Dex-paradoxical adverse effects on eotaxin production. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Changda Liu
- Department of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Nan Yang
- Department of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Xiaoke Chen
- Department of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.,Respiratory Department, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Jody Tversky
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, 21224, USA
| | - Jixun Zhan
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT, 84322, USA
| | - Mirna Chehade
- Department of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Rachel L Miller
- Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University, New York, NY, 10032, USA.,Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Columbia University, New York, NY, 10032, USA.,Department of Environmental Health Sciences, Columbia University, New York, NY, 10032, USA
| | - Xiu-Min Li
- Department of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
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88
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Flynn RJ, Legembre P. Myeloid-derived suppressor cell, arginase-1, IL-17 and cl-CD95L: an explosive cocktail in lupus? ANNALS OF TRANSLATIONAL MEDICINE 2016; 4:554. [PMID: 28149915 DOI: 10.21037/atm.2016.12.35] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Robin J Flynn
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - Patrick Legembre
- Centre Eugène Marquis, Equipe Ligue Contre Le Cancer, Rue Bataille Flandres Dunkerque, 35042 Rennes, France
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89
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Simstein R, Burow M, Parker A, Weldon C, Beckman B. Apoptosis, Chemoresistance, and Breast Cancer: Insights From the MCF-7 Cell Model System. Exp Biol Med (Maywood) 2016; 228:995-1003. [PMID: 14530507 DOI: 10.1177/153537020322800903] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The MCF-7 cell line was derived from a patient with metastatic breast cancer in 1970. Since then it has become a prominent model system for the study of estrogen receptor-positive breast cancer. With this model as a focus, this review summarizes important studies addressing tumor necrosis factor-α as a prototypical apoptosis-inducing cytokine in MCF-7 cells. Both survival and death receptor signaling pathways are discussed in terms of their role in chemotherapy-induced apoptosis as well as in chemoresistance. Novel therapeutic approaches to the treatment of breast cancer are proposed utilizing knowledge of these signaling pathways as targets. Specifically, ceramide metabolism is proposed as a novel target for chemosensitivity, perhaps combined with selective inhibitors of Bcl-2 or PI3K/Akt/nuclear factor-κB. Suggested areas of future research include translational studies manipulating candidate survival and death signaling pathways.
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Affiliation(s)
- Rebecca Simstein
- Department of Medicine, Tulane University Health Sciences Center, New Orleans, Louisiana 70112, USA
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90
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Yu H, He J, Lu Q, Huo D, Yuan S, Zhou Z, Xu P, Hu Y. Anti-Fas Antibody Conjugated Nanoparticles Enhancing the Antitumor Effect of Camptothecin by Activating the Fas-FasL Apoptotic Pathway. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29950-29959. [PMID: 27754664 DOI: 10.1021/acsami.6b09760] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Emerging evidence suggest that the introduction of Fas ligand (FasL) can enhance the Fas-dependent apoptosis and induce durable immune responses against tumor. However, selective triggering of apoptosis in tumor cells while sparing normal cells remains a great challenge for the application of FasL-based therapeutic strategies. Herein, smart nanoparticles (NPs) with a sandwich structure were fabricated. These NPs consist of a matrix metalloproteinase (MMP) cleavable PEG outer layer, an anti-Fas antibody middle layer, and a camptothecin (CPT)-loaded inner core. They could accumulate at a tumor site by the enhanced permeability and retention (EPR) effect. The removable PEG layer protects the cytotoxic anti-Fas antibody from premature contact with normal tissues, thus avoiding the unexpected lethal side effect before they reach the tumor site. Due to the high level of MMP expressed by tumor cells inside the tumor tissue, these NPs would shed their PEG layers, resulting in the exposure of anti-Fas antibody to bind the Fas receptor and triggering the apoptosis of tumor cells. Results of Western blot confirmed that these NPs could mimic the function of activated cytotoxic lymphocyte (CTL) to activate the Fas-FasL apoptosis pathway of tumor cells. With the aid of CPT payload, these anti-Fas antibody conjugated NPs achieved a high tumor inhibition in the B16 allograft tumor animal model. The design of these NPs provides a method for delivering cytotoxic ligand to targeting tissue, which may be valuable in cancer therapy.
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Affiliation(s)
- Hongliang Yu
- Institute of Materials Engineering and Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University , Nanjing, 210093, China
| | | | - Qian Lu
- Institute of Materials Engineering and Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University , Nanjing, 210093, China
| | - Da Huo
- Institute of Materials Engineering and Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University , Nanjing, 210093, China
| | - Shanmei Yuan
- Institute of Materials Engineering and Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University , Nanjing, 210093, China
| | | | | | - Yong Hu
- Institute of Materials Engineering and Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University , Nanjing, 210093, China
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91
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Kuang X, Wei C, Zhang T, Yang Z, Chi J, Wang L. miR-378 inhibits cell growth and enhances apoptosis in human myelodysplastic syndromes. Int J Oncol 2016; 49:1921-1930. [DOI: 10.3892/ijo.2016.3689] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 07/13/2016] [Indexed: 11/06/2022] Open
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92
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Wang X, Zhang Z, He X, Mao W, Zhou L, Li P. Taurochenodeoxycholic acid induces NR8383 cells apoptosis via PKC/JNK-dependent pathway. Eur J Pharmacol 2016; 786:109-115. [DOI: 10.1016/j.ejphar.2016.06.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 06/02/2016] [Accepted: 06/02/2016] [Indexed: 12/18/2022]
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93
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Menon R, Fortunato SJ. The Role of Matrix Degrading Enzymes and Apoptosis in Repture of Membranes. ACTA ACUST UNITED AC 2016; 11:427-37. [PMID: 15458739 DOI: 10.1016/j.jsgi.2004.04.001] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Prematurity is the third leading cause of perinatal death, and preterm premature rupture of the membranes (pPROM) is associated with approximately 20-50% of all preterm births. The etiologic factors described for pPROM and preterm labor (PTL) are the same, although the clinical presentation (pPROM vs PTL) differs among patients. The reason for this disparity is unknown and poses a therapeutic dilemma. Several etiologic factors have been described for PTL and pPROM. PTL and pPROM are associated with overwhelming host inflammatory response. Many of these pro-inflammatory factors (inflammatory cytokine release) are common in both conditions; however, the clinical presentation differs. The objective of this review is to explain the differential expression pattern of matrix metalloproteinases (MMPs) and pro-apoptotic elements in human fetal membranes in pPROM and PTL and how they interact to present different clinical outcomes during pregnancy.
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Affiliation(s)
- Ramkumar Menon
- The Perinatal Research Center of the Women's Health Research and Education Foundation and The University of Phoenix, Nashville Campus, Nashville, Tennessee, USA
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94
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Hu Z, Yang B, Mo X, Zhou F. HspB8 mediates neuroprotection against OGD/R in N2A cells through the phosphoinositide 3-kinase/Akt pathway. Brain Res 2016; 1644:15-21. [DOI: 10.1016/j.brainres.2016.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 04/21/2016] [Accepted: 05/07/2016] [Indexed: 01/25/2023]
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95
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Colakoglu N, Kuloglu T, Ozan E, Kocaman N, Dabak DO, Parlak G. Protective effects of vitamin D3 against d-galactosamine-induced liver injury in rats. Tissue Cell 2016; 48:356-60. [DOI: 10.1016/j.tice.2016.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 05/09/2016] [Accepted: 05/13/2016] [Indexed: 12/21/2022]
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96
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Park SB, Park JS, Jung WH, Kim HY, Kwak HJ, Ahn JH, Choi KJ, Na YJ, Choi S, Dal Rhee S, Kim KY. Anti-inflammatory effect of a selective 11β-hydroxysteroid dehydrogenase type 1 inhibitor via the stimulation of heme oxygenase-1 in LPS-activated mice and J774.1 murine macrophages. J Pharmacol Sci 2016; 131:241-50. [DOI: 10.1016/j.jphs.2016.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 07/03/2016] [Accepted: 07/05/2016] [Indexed: 11/25/2022] Open
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97
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Kun L, Ying L, Lei W, Jianhua Z, Yongbo X, Tao W, Jinyuan T, Haibo C. Dysregulated apoptosis of the venous wall in chronic venous disease and portal hypertension. Phlebology 2016; 31:729-736. [PMID: 26447135 DOI: 10.1177/0268355515610237] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Introduction The etiology of varicose veins remains elusive. We hypothesized that abnormal cell cycle events in the vein wall may contribute to changes in the structural integrity, thus predisposing to the development of varicosities. The present study was designed to determine whether or not the same molecular apoptotic pathway exists between great saphenous and splenic veins. Methods Thirty-six samples of diseased splenic veins and varicose great saphenous veins were collected. Twenty-five samples of control splenic and great saphenous veins were also collected. The apoptotic cell proteins expression was immunohistochemically stained with antibodies (anti-Bax and anti-Bcl-xl). Apoptosis was evaluated by the terminal deoxynucleotidyl transferase-mediated nick-end labeling (TUNEL) assay and immunofluorescence staining. The morphology of apoptotic cells was observed with an electron microscope. Results The apoptotic ratio in walls (intima and media) of diseased splenic vein and varicose great saphenous vein groups were significantly lower than the corresponding regions in the splenic vein and great saphenous vein groups ( p < 0.01), respectively. A significant difference was not noted in the ratio change of apoptotic cells between the diseased splenic vein and varicose great saphenous vein groups ( p > 0.05). The high positive expression of Bcl-xl proteins was detected in the diseased splenic vein and varicose great saphenous vein groups, respectively. While the high positive expression of Bax proteins was also observed in the splenic vein and great saphenous vein groups, respectively. Electron microscopic observations confirmed that endothelial and smooth muscle cells in diseased splenic vein, varicose great saphenous vein, splenic vein, and great saphenous vein walls exhibited apoptotic morphologic features, such as fuzzy mitochondrial cristae, medullary changes, and margination of the nuclear chromatin. Conclusions Our results showed the same dysregulation of apoptosis via the intrinsic pathway in diseased splenic veins and varicose great saphenous veins. This observational study suggests that apoptotic down-regulation in the veins wall is a cause of diseased splenic veins and varicose great saphenous veins, but does not exclude the possibility that other mechanisms are involved.
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Affiliation(s)
- Li Kun
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Li Ying
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Wang Lei
- Department of Postgraduate, Weifang Medical College, Weifang, China
| | - Zhao Jianhua
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Xu Yongbo
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Wang Tao
- Department of Pathology, 89th Hospital of PLA, Weifang, China
| | - Tang Jinyuan
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Chu Haibo
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
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98
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Yongbo X, Wei H, Lei W, Jianhua Z, Tao W, Jinyuan T, Kun L, Haibo C. Changes in levels of apoptosis in the walls of different segments of great saphenous varicose veins. Phlebology 2016; 31:632-9. [PMID: 26420054 DOI: 10.1177/0268355515605670] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective Disordered programmed cell death may play a role in the development of superficial venous incompetence. We have determined the number of cells undergoing apoptosis and the alterations in the apoptotic level in the wall of different segments of the great saphenous varicose vein. Methods Twenty-one varicose great saphenous veins (VGSVs) (varicose group) and 12 normal great saphenous veins (GSVs) (control group) were collected, and the apoptosis level in the upper, middle, and lower segments were immunohistochemically stained with antibodies (anti-Bax and anti-Bcl-xl). Apoptosis was evaluated by the TUNEL assay and immunofluorescence staining. The morphology of apoptotic cells was observed with an electron microscope. Results Quantitative analysis showed that the apoptotic ratios in venous walls (intima and media) of the varicose group were significantly lower than the corresponding regions in the control group (all P < 0.05). A significantly higher apoptotic rates of the venous walls was observed in control group within the upper compared with the lower segment ( P < 0.05). Significantly higher positive proteins expression rates of Bcl-xl/Bax were also detected in the VGSVs compared with the GSVs within the three segments, respectively ( P < 0.01). Electron microscopic observations confirmed that endothelial and smooth muscle cells in varicose and normal vein walls exhibited apoptotic morphologic features, such as fuzzy mitochondrial cristae, medullary changes, and margination of the nuclear chromatin. Conclusion VGSV walls were found to have a significant decrease in apoptotic rate compared with that of GSVs. The rate of apoptosis in the intima and media within the upper segment was increased more than the middle and lower segments in the GSVs. Our findings confirm that programmed cell death is down-regulated in primary varicose veins.
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Affiliation(s)
- Xu Yongbo
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Han Wei
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Wang Lei
- Department of Postgraduate, Weifang Medical College, Weifang, China
| | - Zhao Jianhua
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Wang Tao
- Department of Patholog, 89th Hospital of PLA, Weifang, China
| | - Tang Jinyuan
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Li Kun
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
| | - Chu Haibo
- Department of General Surgery, 89th Hospital of PLA, Weifang, China
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99
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Piao X, Ozawa T, Hamana H, Shitaoka K, Jin A, Kishi H, Muraguchi A. TRAIL-receptor 1 IgM antibodies strongly induce apoptosis in human cancer cells in vitro and in vivo. Oncoimmunology 2016; 5:e1131380. [PMID: 27467950 DOI: 10.1080/2162402x.2015.1131380] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/06/2015] [Accepted: 12/07/2015] [Indexed: 01/01/2023] Open
Abstract
Agonistic tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL)-receptor-specific antibodies are attractive antitumor therapeutics. Recently, our group has generated several human monoclonal antibodies (mAbs) to TRAIL-receptor-1 (TRAIL-R1) (TR1-IgGs) using ISAAC technology. However, these TR1-IgGs did not demonstrate ideal apoptosis-inducing capacity in the absence of additional antibodies. To overcome this limitation, we class-switched the TR1-IgGs to TRAIL-R1 IgM antibodies (TR1-IgMs); TR1-IgMs might possess high valency and facilitate the crosslinking of the cell surface receptors. We showed that the TR1-IgMs bound TRAIL-R1, activated the caspase signal, and induced strong apoptosis (100-fold higher compared with the IgG form in one case) in human tumor cell lines without any additional crosslinking in vitro. We further demonstrated that these TR1-IgMs dramatically inhibited tumor growth in a xenograft model through the caspase activation cascade. These data suggest that TR1-IgMs may become potential immunotherapeutic agents for cancer therapy.
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Affiliation(s)
- Xiuhong Piao
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama , Toyama, Japan
| | - Tatsuhiko Ozawa
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama , Toyama, Japan
| | - Hiroshi Hamana
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama , Toyama, Japan
| | - Kiyomi Shitaoka
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama , Toyama, Japan
| | - Aishun Jin
- Department of Immunology, College of Basic Medical Sciences, Harbin Medical University , Nangang District , Harbin, China
| | - Hiroyuki Kishi
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama , Toyama, Japan
| | - Atsushi Muraguchi
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama , Toyama, Japan
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100
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Lee Y, Byun HS, Seok JH, Park KA, Won M, Seo W, Lee SR, Kang K, Sohn KC, Lee IY, Kim HG, Son CG, Shen HM, Hur GM. Terminalia Chebula provides protection against dual modes of necroptotic and apoptotic cell death upon death receptor ligation. Sci Rep 2016; 6:25094. [PMID: 27117478 PMCID: PMC4846877 DOI: 10.1038/srep25094] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 04/11/2016] [Indexed: 11/16/2022] Open
Abstract
Death receptor (DR) ligation elicits two different modes of cell death (necroptosis and apoptosis) depending on the cellular context. By screening a plant extract library from cells undergoing necroptosis or apoptosis, we identified a water extract of Terminalia chebula (WETC) as a novel and potent dual inhibitor of DR-mediated cell death. Investigation of the underlying mechanisms of its anti-necroptotic and anti-apoptotic action revealed that WETC or its constituents (e.g., gallic acid) protected against tumor necrosis factor-induced necroptosis via the suppression of TNF-induced ROS without affecting the upstream signaling events. Surprisingly, WETC also provided protection against DR-mediated apoptosis by inhibition of the caspase cascade. Furthermore, it activated the autophagy pathway via suppression of mTOR. Of the WETC constituents, punicalagin and geraniin appeared to possess the most potent anti-apoptotic and autophagy activation effect. Importantly, blockage of autophagy with pharmacological inhibitors or genetic silencing of Atg5 selectively abolished the anti-apoptotic function of WETC. These results suggest that WETC protects against dual modes of cell death upon DR ligation. Therefore, WETC might serve as a potential treatment for diseases characterized by aberrantly sensitized apoptotic or non-apoptotic signaling cascades.
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Affiliation(s)
- Yoonjung Lee
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Hee Sun Byun
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Jeong Ho Seok
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Kyeong Ah Park
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Minho Won
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Wonhyoung Seo
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - So-Ra Lee
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Kidong Kang
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Kyung-Cheol Sohn
- Department of Dermatology, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Ill Young Lee
- Eco-Friendly New Materials Reserch Center, Korea Research Institute of Chemical Technology, 141 Daejeon 34114, Republic of Korea
| | - Hyeong-Geug Kim
- Liver &Immunology Research Center, Oriental Hospital of Daejeon University, Daejeon 302-122, Republic of Korea
| | - Chang Gue Son
- Liver &Immunology Research Center, Oriental Hospital of Daejeon University, Daejeon 302-122, Republic of Korea
| | - Han-Ming Shen
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Gang Min Hur
- Department of Pharmacology, Research Institute for Medical Science, College of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
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