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Franzese O, Ancona P, Bianchi N, Aguiari G. Apoptosis, a Metabolic "Head-to-Head" between Tumor and T Cells: Implications for Immunotherapy. Cells 2024; 13:924. [PMID: 38891056 PMCID: PMC11171541 DOI: 10.3390/cells13110924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/18/2024] [Accepted: 05/22/2024] [Indexed: 06/20/2024] Open
Abstract
Induction of apoptosis represents a promising therapeutic approach to drive tumor cells to death. However, this poses challenges due to the intricate nature of cancer biology and the mechanisms employed by cancer cells to survive and escape immune surveillance. Furthermore, molecules released from apoptotic cells and phagocytes in the tumor microenvironment (TME) can facilitate cancer progression and immune evasion. Apoptosis is also a pivotal mechanism in modulating the strength and duration of anti-tumor T-cell responses. Combined strategies including molecular targeting of apoptosis, promoting immunogenic cell death, modulating immunosuppressive cells, and affecting energy pathways can potentially overcome resistance and enhance therapeutic outcomes. Thus, an effective approach for targeting apoptosis within the TME should delicately balance the selective induction of apoptosis in tumor cells, while safeguarding survival, metabolic changes, and functionality of T cells targeting crucial molecular pathways involved in T-cell apoptosis regulation. Enhancing the persistence and effectiveness of T cells may bolster a more resilient and enduring anti-tumor immune response, ultimately advancing therapeutic outcomes in cancer treatment. This review delves into the pivotal topics of this multifaceted issue and suggests drugs and druggable targets for possible combined therapies.
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Affiliation(s)
- Ornella Franzese
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy;
| | - Pietro Ancona
- Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy;
| | - Nicoletta Bianchi
- Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy;
| | - Gianluca Aguiari
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via F. Mortara 74, 44121 Ferrara, Italy;
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Bell HN, Stockwell BR, Zou W. Ironing out the role of ferroptosis in immunity. Immunity 2024; 57:941-956. [PMID: 38749397 PMCID: PMC11101142 DOI: 10.1016/j.immuni.2024.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/20/2024] [Accepted: 03/26/2024] [Indexed: 05/19/2024]
Abstract
Ferroptosis is a type of regulated cell death that drives the pathophysiology of many diseases. Oxidative stress is detectable in many types of regulated cell death, but only ferroptosis involves lipid peroxidation and iron dependency. Ferroptosis originates and propagates from several organelles, including the mitochondria, endoplasmic reticulum, Golgi, and lysosomes. Recent data have revealed that immune cells can both induce and undergo ferroptosis. A mechanistic understanding of how ferroptosis regulates immunity is critical to understanding how ferroptosis controls immune responses and how this is dysregulated in disease. Translationally, more work is needed to produce ferroptosis-modulating immunotherapeutics. This review focuses on the role of ferroptosis in immune-related diseases, including infection, autoimmune diseases, and cancer. We discuss how ferroptosis is regulated in immunity, how this regulation contributes to disease pathogenesis, and how targeting ferroptosis may lead to novel therapies.
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Affiliation(s)
- Hannah N Bell
- Department of Surgery, University of Michigan School of Medicine, Ann Arbor, MI, USA; Center of Excellence for Cancer Immunology and Immunotherapy, University of Michigan School of Medicine, Rogel Cancer Center, Ann Arbor, MI, USA; Graduate Program in Cancer Biology, University of Michigan, Ann Arbor, MI, USA; Graduate Program in Immunology, University of Michigan, Ann Arbor, MI, USA.
| | - Brent R Stockwell
- Department of Biological Sciences, Department of Chemistry, Department of Pathology and Cell Biology, Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, USA.
| | - Weiping Zou
- Department of Surgery, University of Michigan School of Medicine, Ann Arbor, MI, USA; Center of Excellence for Cancer Immunology and Immunotherapy, University of Michigan School of Medicine, Rogel Cancer Center, Ann Arbor, MI, USA; Graduate Program in Cancer Biology, University of Michigan, Ann Arbor, MI, USA; Graduate Program in Immunology, University of Michigan, Ann Arbor, MI, USA; Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI, USA.
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3
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Souza IEL, Fernandes FF, Panunto-Castelo A. Recombinant 60-kDa heat shock protein from Paracoccidioides brasiliensis induces the death of mouse lymphocytes in a mechanism dependent on Toll-like receptor 4 and tumor necrosis factor. PLoS One 2024; 19:e0300364. [PMID: 38512915 PMCID: PMC10956883 DOI: 10.1371/journal.pone.0300364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/23/2024] [Indexed: 03/23/2024] Open
Abstract
Paracoccidioides fungi are thermodimorphic microorganisms that cause paracoccidioidomycosis (PCM), an autochthonous disease from Latin America, with most cases in Brazil. Humans become infected by inhaling conidia or mycelial fragments that transform into yeast at body temperature. These fungi cause chronic-granulomatous inflammation, which may promote fibrosis and parenchyma destruction in the lungs. In response to stress imposed by the host, fungi Paracoccidioides spp. increase the expression of heat shock proteins (HSP), which protect them by sustaining cellular proteostasis. Our group has studied the role of HSP60 in PCM, and previous data show that the recombinant HSP60 (rHSP60) has a deleterious effect when used in a single dose as therapy for experimental PCM. Here, we investigated the mechanism by which rHSP60 could worsen the disease. We found that rHSP60 caused the viability loss of splenic or lymph node cells from both immunized and non-immunized mice, including in splenic T lymphocytes under polyclonal stimulation with concanavalin A, probably by undergoing apoptosis. Among analyzed splenic cells, lymphocytes were indeed the main cells to die. When we investigated the death mechanisms, remarkably, we found that there was no viability loss in rHSP60-stimulated splenic cells from mice deficient in Toll-like receptor 4, TRIF adapter protein, and TNF receptor 1(TNFR1), as well as rHSP60-stimulated WT cells incubated with anti-TNF antibody. Besides, caspase-8 inhibitor IETD-CHO blocked the rHSP60 effect on splenic cells, suggesting that rHSP60 induces the extrinsic apoptosis pathway dependent on signaling via TLR4/TRIF and TNFR1.
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Affiliation(s)
- Igor Emiliano L. Souza
- Graduate Program in Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fabrício F. Fernandes
- Federal Institute of Education, Science and Technology of Mato Grosso, Campus Sorriso, Sorriso, State of Mato Grosso, Brazil
| | - Ademilson Panunto-Castelo
- Graduate Program in Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Drexhage LZ, Zhang S, Dupont M, Ragaller F, Sjule E, Cabezas-Caballero J, Deimel LP, Robertson H, Russell RA, Dushek O, Sezgin E, Karaji N, Sattentau QJ. Apoptosis-mediated ADAM10 activation removes a mucin barrier promoting T cell efferocytosis. Nat Commun 2024; 15:541. [PMID: 38225245 PMCID: PMC10789802 DOI: 10.1038/s41467-023-44619-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 12/22/2023] [Indexed: 01/17/2024] Open
Abstract
Efferocytic clearance of apoptotic cells in general, and T cells in particular, is required for tissue and immune homeostasis. Transmembrane mucins are extended glycoproteins highly expressed in the cell glycocalyx that function as a barrier to phagocytosis. Whether and how mucins may be regulated during cell death to facilitate efferocytic corpse clearance is not well understood. Here we show that normal and transformed human T cells express a subset of mucins which are rapidly and selectively removed from the cell surface during apoptosis. This process is mediated by the ADAM10 sheddase, the activity of which is associated with XKR8-catalyzed flipping of phosphatidylserine to the outer leaflet of the plasma membrane. Mucin clearance enhances uptake of apoptotic T cells by macrophages, confirming mucins as an enzymatically-modulatable barrier to efferocytosis. Together these findings demonstrate a glycocalyx regulatory pathway with implications for therapeutic intervention in the clearance of normal and transformed apoptotic T cells.
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Affiliation(s)
- Linnea Z Drexhage
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
| | - Shengpan Zhang
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
| | - Maeva Dupont
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
- Immunocore Ltd., 92 Park Dr, Milton, Abingdon, OX14 4RY, UK
| | - Franziska Ragaller
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17165, Solna, Sweden
| | - Ellen Sjule
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17165, Solna, Sweden
| | | | - Lachlan P Deimel
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
| | - Helen Robertson
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
| | - Rebecca A Russell
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
- SpyBiotech Ltd.; 7600 Quorum, Oxford Business Park North, Oxford, OX4 2JZ, UK
| | - Omer Dushek
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK
| | - Erdinc Sezgin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 17165, Solna, Sweden
| | - Niloofar Karaji
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK.
- Oxford Biomedica plc.; Windrush Court, Transport Way, Oxford, OX4 6LT, UK.
| | - Quentin J Sattentau
- The Sir William Dunn School of Pathology, The University of Oxford, Oxford, OX13RE, UK.
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association; Berlin-Buch, 13125, Berlin, Germany.
- Experimental and Clinical Research Center (ECRC), Charité Universitätsmedizin Berlin and Max-Delbrück-Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany.
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Jung H, Joo HG. Dendritic cells resist to disulfiram-induced cytotoxicity, but reduced interleukin-12/23(p40) production. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2023; 27:471-479. [PMID: 37641809 PMCID: PMC10466071 DOI: 10.4196/kjpp.2023.27.5.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 08/31/2023]
Abstract
Disulfiram (DSF), a medication for alcoholism, has recently been used as a repurposing drug owing to its anticancer effects. Despite the crucial role of dendritic cells (DCs) in immune homeostasis and cancer therapy, the effects of DSF on the survival and function of DCs have not yet been studied. Therefore, we treated bone marrow-derived DCs with DSF and lipopolysaccharide (LPS) and performed various analyses. DCs are resistant to DSF and less cytotoxic than bone marrow cells and spleen cells. The viability and metabolic activity of DCs hardly decreased after treatment with DSF in the absence or presence of LPS. DSF did not alter the expression of surface markers (MHC II, CD86, CD40, and CD54), antigen uptake capability, or the antigen-presenting ability of LPS-treated DCs. DSF decreased the production of interleukin (IL)-12/23 (p40), but not IL-6 or tumor necrosis factor-α, in LPS-treated DCs. We considered the granulocyte-macrophage colony-stimulating factor (GM-CSF) as a factor to make DCs resistant to DSF-induced cytotoxicity. The resistance of DCs to DSF decreased when GM-CSF was not given or its signaling was inhibited. Also, GM-CSF upregulated the expression of a transcription factor XBP-1 which is essential for DCs' survival. This study demonstrated for the first time that DSF did not alter the function of DCs, had low cytotoxicity, and induced differential cytokine production.
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Affiliation(s)
- Haebeen Jung
- College of Veterinary Medicine, Jeju National University, Jeju 63243, Korea
| | - Hong-Gu Joo
- College of Veterinary Medicine, Jeju National University, Jeju 63243, Korea
- Veterinary Medical Research Institute, Jeju National University, Jeju 63243, Korea
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Malinowska K, Sicińska P, Michałowicz J, Bukowska B. The effects of non-functionalized polystyrene nanoparticles of different diameters on the induction of apoptosis and mTOR level in human peripheral blood mononuclear cells. CHEMOSPHERE 2023; 335:139137. [PMID: 37285979 DOI: 10.1016/j.chemosphere.2023.139137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/31/2023] [Accepted: 06/03/2023] [Indexed: 06/09/2023]
Abstract
Particles of various types of plastics, including polystyrene nanoparticles (PS-NPs), have been determined in human blood, placenta, and lungs. These findings suggest a potential detrimental effect of PS-NPs on bloodstream cells. The purpose of this study was to assess the mechanism underlying PS-NPs-induced apoptosis in human peripheral blood mononuclear cells (PBMCs). Non-functionalized PS-NPs of three diameters: 29 nm, 44 nm, and 72 nm were studied used in this research. PBMCs were isolated from human leukocyte-platelet buffy coat and treated with PS-NPs at concentrations ranging from 0.001 to 200 μg/mL for 24 h. Apoptotic mechanism of action was evaluated by determining the level of cytosolic calcium ions, as well as mitochondrial transmembrane potential, and ATP levels. Furthermore, detection of caspase-8, -9, and -3 activation, as well as mTOR level was conducted. The presence of apoptotic PBMCs was confirmed by the method of double staining of the cells with propidium iodide and FITC-conjugated Annexin V. We found that all tested NPs increased calcium ion and depleted mitochondrial transmembrane potential levels. The tested NPs also activated caspase-9 and caspase-3, and the smallest NPs of 29 nm of diameter also activated caspase-8. The results clearly showed that apoptotic changes and an increase of mTOR level depended on the size of the tested NPs, while the smallest particles caused the greatest alterations. PS-NPs of 26 nm of diameter activated the extrinsic pathway (increased caspase-8 activity), as well as intrinsic (mitochondrial) pathway (increased caspase-9 activity, raised calcium ion level, and decreased transmembrane mitochondrial potential) of apoptosis. All PS-NPs increased mTOR level at the concentrations smaller than those that induced apoptosis and its level returned to control value when the process of apoptosis escalated.
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Affiliation(s)
- Kinga Malinowska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Paulina Sicińska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Jaromir Michałowicz
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland
| | - Bożena Bukowska
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Biophysics of Environmental Pollution, 141/143 Pomorska St., 90-236, Lodz, Poland.
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Guo T, Wang X, Zhang G, Xia T, Zhu R, Tou J. Dihydromyricetin functions as a tumor suppressor in hepatoblastoma by regulating SOD1/ROS pathway. Front Oncol 2023; 13:1160548. [PMID: 37256172 PMCID: PMC10225683 DOI: 10.3389/fonc.2023.1160548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/25/2023] [Indexed: 06/01/2023] Open
Abstract
Background Hepatoblastoma has an unsatisfactory prognosis, and traditional chemotherapy has strong side effects. Dihydromyricetin is a flavonoid extracted from a woody vine of the genus Serpentine in the family Vitaceae, with effects such as preventing alcoholic liver and reducing the incidence of liver cancer. However, the effect of DHM on hepatoblastoma and its specific pathway are still unclear. Purpose The purpose of this study was to investigate the effects of DHM on children's hepatoblastoma and its related mechanisms. Methods CCK-8 assays were used to measure proliferation. Apoptosis and reactive oxygen species (ROS) were analyzed by flow cytometry. Apoptotic cells were observed using Hoechst 33342 staining and fluorescence microscopy. Protein expression levels in HuH-6 and HepG2 cells were determined by western blotting. Results We found that DHM was able to inhibit the growth and increase cellular mortality in HuH-6 and HepG2 cells. Furthermore, DHM decreased the intracellular ROS level and increased the expression of SOD1. ROS scavenger NAC promoted apoptosis, while the use of SOD1 inhibitor LCS-1 weakened the ROS scavenging effect of DHM , and to some extent reduced the killing effect of DHM on hepatoblastoma cells. Conclusion These results suggest that regulating SOD1/ROS pathway to induce apoptosis is one of the potential mechanisms of DHM as a tumor suppressor in hepatoblastoma. Therefore, DHM may be a novel candidate for inhibiting hepatoblastoma growth and deserves further study.
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Affiliation(s)
- Tong Guo
- Department of Neonatal Surgery, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Xitong Wang
- National Clinical Research Center for Child Health, The Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Gensheng Zhang
- National Clinical Research Center for Child Health, The Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Tian Xia
- National Clinical Research Center for Child Health, The Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Runzhi Zhu
- National Clinical Research Center for Child Health, The Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jinfa Tou
- Department of Neonatal Surgery, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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Bukowski K, Marciniak B, Kciuk M, Mujwar S, Mojzych M, Kontek R. Pyrazolo[4,3- e]tetrazolo[1,5- b][1,2,4]triazine Sulfonamides as Novel Potential Anticancer Agents: Apoptosis, Oxidative Stress, and Cell Cycle Analysis. Int J Mol Sci 2023; 24:ijms24108504. [PMID: 37239848 DOI: 10.3390/ijms24108504] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/03/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
The current study continues the evaluation of the anticancer potential of three de novo synthesized pyrazolo[4,3-e]tetrazolo[1,5-b][1,2,4]triazine sulfonamides-MM129, MM130, and MM131-against human cancer cells of HeLa, HCT 116, PC-3, and BxPC-3 lines. The pro-apoptotic activity of the investigated sulfonamides was shown by observations of changes in the mitochondrial transmembrane potential of the tested cells, externalization of phosphatidylserine on the cellular membrane surface, and cell morphology in microscopic imaging. The computational studies have shown that MM129 exhibited the lowest binding energy values when docked against CDK enzymes. In addition, the highest stability was shown for complexes formed between MM129 and CDK5/8 enzymes. All examined compounds induced cell cycle arrest in the G0/G1 phase in the BxPC-3 and PC-3 cells and simultaneously caused the accumulation of cells in the S phase in the HCT 116 cells. In addition, the increase in the subG1 fraction was observed in PC-3 and HeLa cells. The application of a fluorescent H2DCFDA probe revealed the high pro-oxidative properties of the tested triazine derivatives, especially MM131. In conclusion, the obtained results suggest that MM129, MM130, and MM131 exhibited strong pro-apoptotic properties towards investigated cells, mainly against the HeLa and HCT 116 cell lines, and high pro-oxidative potential as well. Moreover, it is suggested that the anticancer activity of the tested compounds may be associated with their ability to inhibit CDK enzymes activities.
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Affiliation(s)
- Karol Bukowski
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
| | - Beata Marciniak
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
| | - Mateusz Kciuk
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
- Doctoral School of Exact and Natural Sciences, University of Lodz, 90-237 Lodz, Poland
| | - Somdutt Mujwar
- Chitkara College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India
| | - Mariusz Mojzych
- Department of Chemistry, Siedlce University of Natural Sciences and Humanities, 08-110 Siedlce, Poland
| | - Renata Kontek
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland
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Jęśkowiak-Kossakowska I, Jawień P, Krzyżak E, Mączyński M, Szafran R, Szeląg A, Janeczek M, Wiatrak B. Search for immunomodulatory compounds with antiproliferative activity against melanoma. Biomed Pharmacother 2023; 160:114374. [PMID: 36774726 DOI: 10.1016/j.biopha.2023.114374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Melanoma is a highly aggressive neoplasm with a high degree of malignancy and rapid acquisition of resistance by cancer cells. METHODS Biological studies of a series of isoxazole compounds with immunomodulatory properties were preceded by in silico analysis. The assay evaluated the viability of NHDF and A375 cell cultures after the administration of isoxazole compounds after a 24-hour incubation period in the MTT test. Analyzes of ROS and NO scavenging, P-glycoprotein activity, and properties were performed. The levels of Caspase 3 and Caspase 9 were measured using ELISA to assess which pathways induced apoptosis by the tested compounds. On the chip, the synergistic effect of doxorubicin and the most active compound from the MM9 series on cells of the A375 melanoma line was determined. RESULTS All tested N'-substituted derivatives of 5-amino-N,3-dimethyl-1,2-oxazole-4-carbohydrazide with immunomodulatory activity show multidirectional antitumor activity on A375 melanoma lines with an affinity for P-glycoprotein, induction of free radical formation and generation of DNA damage leading to the death of cancer cells, as well as formation of complexes with DNA Topoisomerase II. Most of the tested compounds show pro-apoptotic activity. The most active compound in the series induces apoptosis in three distinct pathways and acts synergistically with doxorubicin. CONCLUSIONS The most active compound with immunomodulatory properties showed multidirectional antitumor activity against cells of the A375 melanoma line and also had a synergistic pro-apoptotic effect with doxorubicin, which may result in a reduction of this cytostatic dose with increased effectiveness.
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Affiliation(s)
- Izabela Jęśkowiak-Kossakowska
- Department of Pharmacology, Faculty of Medicine, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland.
| | - Paulina Jawień
- Department of Biostructure and Animal Physiology, Wroclaw University of Environmental and Life Sciences, Norwida 25/27, 50-375 Wroclaw, Poland.
| | - Edward Krzyżak
- Department of Basic Chemical Sciences, Faculty of Pharmacy, Wroclaw Medical University, ul. Borowska 211a, 50-556 Wrocław, Poland.
| | - Marcin Mączyński
- Department of Organic Chemistry and Drug Technology, Faculty of Pharmacy, Wroclaw Medical University, 211A Borowska Street, 50-556 Wroclaw, Poland.
| | - Roman Szafran
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, ul. Norwida 4/6, 50-373 Wroclaw, Poland.
| | - Adam Szeląg
- Department of Pharmacology, Faculty of Medicine, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland.
| | - Maciej Janeczek
- Department of Biostructure and Animal Physiology, Wroclaw University of Environmental and Life Sciences, Norwida 25/27, 50-375 Wroclaw, Poland.
| | - Benita Wiatrak
- Department of Pharmacology, Faculty of Medicine, Wroclaw Medical University, Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland.
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Das A, Chowdhury O, Gupta P, Das N, Mitra A, Ghosh S, Ghosh S, Sarkar S, Bandyopadhyay D, Chattopadhyay S. Arsenic-induced differential inflammatory responses in mouse thymus involves NF-κB/STAT-3 disruption, Treg bias and autophagy activation. Life Sci 2023; 314:121290. [PMID: 36549349 DOI: 10.1016/j.lfs.2022.121290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/29/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
AIM Arsenic contamination in drinking water is a world-wide public health concern. Sustained arsenic ingestion leads to immune alterations and subsequent development of inflammatory and autoimmune diseases; however, the underlying cellular and molecular intricacies of immunotoxicity remains uncharacterized. We aim to understand how exposure to arsenic at different concentrations affects the immune system differentially and whether arsenic-induced differential inflammation dictates altered T-regulatory cell bias and emphasize the role of autophagy in the pathway. MAIN METHODS Swiss albino mice were exposed to environmentally relevant concentrations of arsenic in drinking water for 28 days. Examination of thymic cyto-architecture was done to evaluate thymic damage. ELISA was performed for key cytokines. Flow cytometry, western blotting, and immunostaining were performed for cell surface and intracellular proteins. Co-immunoprecipitation and transfection with siRNA were performed to examine the direct physical interactions between proteins. KEY FINDINGS Our study distinctly demonstrates that arsenic-induced oxidative stress instigates NF-κB activation, which not only provokes pro-inflammatory responses, but also exhibits immune-suppressive activity depending on the dose of arsenic. Co-immunoprecipitation of NF-κBp65 and pSTAT-3 reveals that arsenic alters their physical interaction, thereby suppressing IL-6/STAT-3/IL-17A feedback loop. Flow cytometry and silencing studies demonstrate that NF-κB-driven Treg cell differentiation induces immune-suppression through FoxP3 up-regulation at the highest dose of arsenic and such immune-suppression is actively supported by NF-κB-driven autophagy activation. SIGNIFICANCE Collectively, our findings reveal that exposure to arsenic differentially impacts the immune system and understanding the molecular cascade might provide direction for prevention/treatment of arsenic-induced inflammatory and autoimmune diseases.
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Affiliation(s)
- Ankur Das
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Olivia Chowdhury
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Payal Gupta
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Nirmal Das
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Ankan Mitra
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Sourav Ghosh
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Sayan Ghosh
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | - Swaimanti Sarkar
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India
| | | | - Sreya Chattopadhyay
- Department of Physiology, University of Calcutta, Kolkata, West Bengal, India; Centre for Research in Nanoscience and Nanotechnology (CRNN), University of Calcutta, JD-2, Salt Lake, Sector III, Kolkata 700098, India.
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He YF, Jiang ZG, Wu N, Bian N, Ren JL. Correlation between COVID-19 and hepatitis B: A systematic review. World J Gastroenterol 2022; 28:6599-6618. [PMID: 36569273 PMCID: PMC9782843 DOI: 10.3748/wjg.v28.i46.6599] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/29/2022] [Accepted: 11/19/2022] [Indexed: 12/08/2022] Open
Abstract
BACKGROUND There is growing evidence that patients with coronavirus disease 2019 (COVID-19) frequently present with liver impairment. Hepatitis B virus (HBV) remains a major public health threat in current society. Both severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and HBV can cause liver damage, and current findings on whether HBV infection increases disease severity in COVID-19 patients are inconsistent, and whether SARS-CoV-2 infection accelerates hepatitis B progression or leads to a worse prognosis in hepatitis B patients has not been adequately elucidated.
AIM To explore the complex relationship between COVID-19 and hepatitis B in order to inform the research and management of patients co-infected with SARS-CoV-2 and HBV.
METHODS An experienced information specialist searched the literature in the following online databases: PubMed, China National Knowledge Infrastructure, Google Scholar, Scopus, Wiley, Web of Science, Cochrane, and ScienceDirect. The literature published from December 2019 to September 1, 2022 was included in the search. We also searched medRxiv and bioRxiv for gray literature and manually scanned references of included articles. Articles reporting studies conducted in humans discussing hepatitis B and COVID-19 were included. We excluded duplicate publications. News reports, reports, and other gray literature were included if they contained quantifiable evidence (case reports, findings, and qualitative analysis). Some topics that included HBV or COVID-19 samples but did not have quantitative evidence were excluded from the review.
RESULTS A total of 57 studies were eligible and included in this review. They were from 11 countries, of which 33 (57.9%) were from China. Forty-two of the 57 studies reported abnormalities in liver enzymes, three mainly reported abnormalities in blood parameters, four indicated no significant liver function alterations, and another eight studies did not provide data on changes in liver function. Fifty-seven studies were retrospective and the total number of co-infections was 1932, the largest sample size was 7723, and the largest number of co-infections was 353. Most of the studies suggested an interaction between hepatitis B and COVID-19, while 12 studies clearly indicated no interaction between hepatitis B and COVID-19. Six of the 57 studies clearly reported HBV activation. Six studies were related to liver transplant patients.
CONCLUSION There is some association between COVID-19 and hepatitis B. Future high-quality randomized trials are needed to further elucidate the interaction between COVID-19 and hepatitis B.
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Affiliation(s)
- Yan-Fei He
- Health Management Center, The Sixth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
| | - Zhi-Gang Jiang
- Department of Statistics, Zunyi Medical University, Guizhou 563006, Guizhou Province, China
| | - Ni Wu
- Health Management Center, The Sixth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
| | - Ning Bian
- Health Management Center, The Sixth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
| | - Jun-Lin Ren
- Department of Infection Control, The Sixth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
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12
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Abdelbary M, Mohamed R, Gillis EE, Diaz-Sanders K, Baban B, Brands MW, Sullivan JC. Sex differences in apoptosis do not contribute to sex differences in blood pressure or renal T cells in spontaneously hypertensive rats. Front Physiol 2022; 13:1006951. [PMID: 36304583 PMCID: PMC9592703 DOI: 10.3389/fphys.2022.1006951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/23/2022] [Indexed: 11/29/2022] Open
Abstract
Apoptosis is a physiological and anti-inflammatory form of cell death that is indispensable for normal physiology and homeostasis. Several studies have reported aberrant activation of apoptosis in various tissues at the onset of hypertension. However, the functional significance of apoptosis during essential hypertension remains largely undefined. The current study was designed to test the hypothesis that apoptosis contributes to sex differences in blood pressure and the T cell profile in spontaneously hypertensive rats (SHR). Apoptosis was measured in kidney, aorta and spleen of 13-week-old adult hypertensive male and female SHR. Female SHR had greater renal and aortic apoptosis compared to age-matched males; apoptosis in the spleen was comparable between the sexes. Based on well-established sex differences in hypertension, we tested the hypothesis that greater apoptosis in female SHR contributes to the lower BP and pro-inflammatory profile compared to males. Male and female SHR were randomized to receive vehicle or ZVAD-FMK, a cell permeable pan-caspase inhibitor, in established hypertension from 13 to 15 weeks of age or at the onset of hypertension from 6 to 12 weeks or age. Treatment with ZVAD-FMK lowered renal apoptosis in both studies, yet neither BP nor renal T cells were altered in either male or female SHR. These results suggest that apoptosis does not contribute to the control or maintenance of BP in male or female SHR or sex differences in renal T cells.
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Affiliation(s)
- Mahmoud Abdelbary
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Riyaz Mohamed
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Ellen E. Gillis
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Karl Diaz-Sanders
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Babak Baban
- Department of Oral Biology, Augusta University, Augusta, GA, United States
| | - Michael W. Brands
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Jennifer C. Sullivan
- Department of Physiology, Augusta University, Augusta, GA, United States,*Correspondence: Jennifer C. Sullivan,
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13
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The PD-1/PD-L1 Pathway: A Perspective on Comparative Immuno-Oncology. Animals (Basel) 2022; 12:ani12192661. [PMID: 36230402 PMCID: PMC9558501 DOI: 10.3390/ani12192661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/25/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022] Open
Abstract
Simple Summary The programmed cell death protein 1/programmed death-ligand 1 (PD-1/PD-L1) pathway inhibits the function of activated immune cells. This mediates immune tolerance and prevents immune-mediated tissue destruction. The malfunction of this pathway is involved in the pathogenesis of chronic infections, autoimmunity, and cancer. The PD-1/PD-L1 pathway is an excellent example of the research benefits of comparative pathology and attests to the importance of the “one health one medicine” concept. Pioneering research was mainly focused on the examination of cells and tissues of human and mouse origin. It mainly revealed that PD-L1-positive tumor cells can paralyze PD-1-bearing immune cells, which prevents immunological destruction of cancer cells. This led to a major breakthrough in cancer treatment, i.e., the use of antibodies that block the interaction of these molecules and restore anti-cancer immune defense (immune checkpoint therapy). Further studies provided more detailed information on the tissue-specific context and fine-tuning of this pathway. The most recent research has extended the investigations to the examination of several animal species with the aim of improving disease diagnostics and treatment for certain animal diseases, in particular cancer, which is a major cause of disease and death in companion animals. Abstract The programmed cell death protein 1/programmed death-ligand 1 (PD-1/PD-L1) pathway mainly attracted attention in immuno-oncology, leading to the development of immune checkpoint therapy. It has, however, much broader importance for tissue physiology and pathology. It mediates basic processes of immune tolerance and tissue homeostasis. In addition, it is involved in the pathogenesis of chronic infectious diseases, autoimmunity, and cancer. It is also an important paradigm for comparative pathology as well as the “one health one medicine” concept. The aim of this review is to provide an overview of novel research into the diverse facets of the PD-1/PD-L1 pathway and to give insights into its fine-tuning homeostatic role in a tissue-specific context. This review details early translational research from the discovery phase based on mice as animal models for understanding pathophysiological aspects in human tissues to more recent research extending the investigations to several animal species. The latter has the twofold goal of comparing this pathway between humans and different animal species and translating diagnostic tools and treatment options established for the use in human beings to animals and vice versa.
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14
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van der List ACJ, Litjens NHR, Klepper M, Prevoo F, Betjes MGH. Progressive Loss of Donor-Reactive CD4 +Effector Memory T Cells due to Apoptosis Underlies Donor-Specific Hyporesponsiveness in Stable Renal Transplant Recipients. THE JOURNAL OF IMMUNOLOGY 2022; 209:1389-1400. [DOI: 10.4049/jimmunol.2200352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/01/2022] [Indexed: 11/06/2022]
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15
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Barańska A, Bukowska B, Michałowicz J. Determination of Apoptotic Mechanism of Action of Tetrabromobisphenol A and Tetrabromobisphenol S in Human Peripheral Blood Mononuclear Cells: A Comparative Study. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27186052. [PMID: 36144785 PMCID: PMC9500834 DOI: 10.3390/molecules27186052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022]
Abstract
Background: Tetrabromobisphenol A (TBBPA) is the most commonly used brominated flame retardant (BFR) in the industry. TBBPA has been determined in environmental samples, food, tap water, dust as well as outdoor and indoor air and in the human body. Studies have also shown the toxic potential of this substance. In search of a better and less toxic BFR, tetrabromobisphenol S (TBBPS) has been developed in order to replace TBBPA in the industry. There is a lack of data on the toxic effects of TBBPS, while no study has explored apoptotic mechanism of action of TBBPA and TBBPS in human leukocytes. Methods: The cells were separated from leucocyte-platelet buffy coat and were incubated with studied compounds in concentrations ranging from 0.01 to 50 µg/mL for 24 h. In order to explore the apoptotic mechanism of action of tested BFRs, phosphatidylserine externalization at cellular membrane (the number of apoptotic cells), cytosolic calcium ion and transmembrane mitochondrial potential levels, caspase-8, -9 and -3 activation, as well as PARP-1 cleavage, DNA fragmentation and chromatin condensation in PBMCs were determined. Results: TBBPA and TBBPS triggered apoptosis in human PBMCs as they changed all tested parameters in the incubated cells. It was also observed that the mitochondrial pathway was mainly involved in the apoptotic action of studied compounds. Conclusions: It was found that TBBPS, and more strongly TBBPA, triggered apoptosis in human PBMCs. Generally, the mitochondrial pathway was involved in the apoptotic action of tested compounds; nevertheless, TBBPS more strongly than TBBPA caused intrinsic pathway activation.
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16
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Tamura I, Tamura H, Kawamoto-Jozaki M, Shirafuta Y, Fujimura T, Doi-Tanaka Y, Mihara Y, Taketani T, Sugino N. Effects of Melatonin on the Transcriptome of Human Granulosa Cells, Fertilization and Blastocyst Formation. Int J Mol Sci 2022; 23:ijms23126731. [PMID: 35743171 PMCID: PMC9223589 DOI: 10.3390/ijms23126731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 01/25/2023] Open
Abstract
Melatonin is a promising reagent that can improve assisted reproductive technology (ART) outcomes in infertility patients. However, melatonin is not effective for all infertile patients, and it remains unclear for which patients melatonin would be effective. This study examined the effects of melatonin on ART outcomes and examined its mechanisms. Melatonin increased the fertilization rate in patients whose fertilization rates in the previous cycle were less than 50%, but not in patients whose fertilization rates were more than 50% in the previous cycle. Melatonin increased the blastocyst formation rate in patients whose embryo development rates in the previous cycle were less than 50%, but not in patients whose embryo development rates were more than 50% in the previous cycle. To clarify its mechanisms, transcriptome changes by melatonin treatment in granulosa cells (GCs) of the patients were examined by RNA-sequence. Melatonin treatment altered the transcriptomes of GCs of patients with poor ART outcomes so that they were similar to the transcriptomes of patients with good ART outcomes. The altered genes were associated with the inhibition of cell death and T-cell activity, and the activation of steroidogenesis and angiogenesis. Melatonin treatment was effective for patients with poor fertilization rates and poor embryo development rates in the previous ART cycle. Melatonin alters the GCs transcriptome and, thus, their functions, and this could improve the oocyte quality, leading to good ART outcomes.
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Affiliation(s)
| | - Hiroshi Tamura
- Correspondence: ; Tel.: +81-836-22-2288; Fax: +81-836-22-2287
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17
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Qiu Y, Lin X, Chen Z, Li B, Zhang Y. 5-Hydroxymethylfurfural Exerts Negative Effects on Gastric Mucosal Epithelial Cells by Inducing Oxidative Stress, Apoptosis, and Tight Junction Disruption. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3852-3861. [PMID: 35311281 DOI: 10.1021/acs.jafc.2c00269] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
5-Hydroxymethylfurfural (5-HMF) is a processing byproduct present in foods that are consumed daily by humans, and the diet is the principal route for human exposure to it. However, its adverse effects on gastric epithelial cells are not fully understood. Based on the half inhibitory concentration value, concentrations of HMF of 2, 4, 8, and 16 mM were selected for this study. After 5-HMF treatment for 24 h, the number of living cells decreased to 89.61 ± 0.48, 77.30 ± 0.57, 58.75 ± 0.36, and 19.61 ± 0.40% of the control, respectively. Apoptosis activated through both the death receptor and mitochondrial pathways was confirmed to be the primary mode of HMF-induced cell death. Further analysis revealed that the reactive oxygen species (ROS) levels in GES-1 cells increased 1.7-6.5 fold after exposure to 5-HMF. Moreover, the inhibition of ROS by N-acetylcysteine blocked HMF-induced apoptosis and cell proliferation suppression, indicating that oxidative stress was important in HMF-induced apoptosis. Besides, after 5-HMF treatment, the gene expressions of occludin and ZO-1 were reduced by 1.1-3.4 fold and 2.0-9.4 fold, respectively. The cell surface morphology and tight junction-related protein expression analysis also revealed the destructive effect of 5-HMF on tight junction integrity. Our research highlights a potential mechanism of HMF-induced toxicity in GES-1 cells and provides additional information on the health risks of 5-HMF exposure to the human gastric epithelium.
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Affiliation(s)
- Yanting Qiu
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiaorong Lin
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhongzheng Chen
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Bin Li
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Yuanyuan Zhang
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
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18
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Stripenn detects architectural stripes from chromatin conformation data using computer vision. Nat Commun 2022; 13:1602. [PMID: 35332165 PMCID: PMC8948182 DOI: 10.1038/s41467-022-29258-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 02/28/2022] [Indexed: 12/14/2022] Open
Abstract
Architectural stripes tend to form at genomic regions harboring genes with salient roles in cell identity and function. Therefore, the accurate identification and quantification of these features are essential for understanding lineage-specific gene regulation. Here, we present Stripenn, an algorithm rooted in computer vision to systematically detect and quantitate architectural stripes from chromatin conformation measurements using various technologies. We demonstrate that Stripenn outperforms existing methods and highlight its biological applications in the context of B and T lymphocytes. By comparing stripes across distinct cell types and different species, we find that these chromatin features are highly conserved and form at genes with prominent roles in cell-type-specific processes. In summary, Stripenn is a computational method that borrows concepts from widely used image processing techniques to demarcate and quantify architectural stripes. Chromosome conformation capture techniques have recently revealed features beyond chromatin loops such as architectural stripes. Here the authors present their stripe detection tool ‘Stripenn’ to detect and quantitate stripes from any type of chromatin conformation capture data. They show that architectural stripes are enriched at transcriptionally active and accessible genomic regions.
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19
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Chen Z, Wang N, Yao Y, Yu D. Context-dependent regulation of follicular helper T cell survival. Trends Immunol 2022; 43:309-321. [DOI: 10.1016/j.it.2022.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 02/07/2023]
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20
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Pohida K, Lake C, Yee D, Snow A. Restimulation-Induced Cell Death (RICD): Methods for Modeling, Investigating, and Quantifying RICD Sensitivity in Primary Human T Cells via Flow Cytometric Analysis. Bio Protoc 2022; 12:e4326. [DOI: 10.21769/bioprotoc.4326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 09/23/2021] [Accepted: 12/17/2021] [Indexed: 11/02/2022] Open
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21
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Liu A, Wei Q, Lin H, Ding Y, Sun YV, Zhao D, He J, Ma Z, Li F, Zhou S, Chen X, Shen W, Gao M, He N. Baseline Characteristics of Mitochondrial DNA and Mutations Associated With Short-Term Posttreatment CD4+T-Cell Recovery in Chinese People With HIV. Front Immunol 2022; 12:793375. [PMID: 34970271 PMCID: PMC8712318 DOI: 10.3389/fimmu.2021.793375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/16/2021] [Indexed: 11/25/2022] Open
Abstract
Background Mitochondrial DNA (mtDNA) profiles and contributions of mtDNA variants to CD4+T-cell recovery in Euramerican people living with HIV (PLWH) may not be transferred to East-Asian PLWH, highlighting the need to consider more regional studies. We aimed to identify mtDNA characteristics and mutations that explain the variability of short-term CD4+T-cell recovery in East-Asian PLWH. Method Eight hundred fifty-six newly reported antiretroviral therapy (ART)-naïve Chinese PLWH from the Comparative HIV and Aging Research in Taizhou (CHART) cohort (Zhejiang Province, Eastern China) were enrolled. MtDNA was extracted from peripheral whole blood of those PLWH at HIV diagnosis, amplified, and sequenced using polymerase chain reaction and gene array. Characterization metrics such as mutational diversity and momentum were developed to delineate baseline mtDNA mutational patterns in ART-naïve PLWH. The associations between mtDNA genome-wide single nucleotide variants and CD4+T-cell recovery after short-term (within ~48 weeks) ART in 724 PLWH were examined using bootstrapping median regressions. Results Of 856 participants, 74.18% and 25.82% were male and female, respectively. The median age was 37 years; 94.51% were of the major Han ethnicity, and 69.04% and 28.62% were of the heterosexual and homosexual transmission, respectively. We identified 2,352 types of mtDNA mutations and mtDNA regions D-loop, ND5, CYB, or RNR1 with highest mutational diversity or volume. Female PLWH rather than male PLWH at the baseline showed remarkable age-related uptrends of momentum and mutational diversity as well as correlations between CD4+T <200 (cells/μl) and age-related uptrends of mutational diversity in many mtDNA regions. After adjustments of important sociodemographic and clinical variables, m.1005T>C, m.1824T>C, m.3394T>C, m.4491G>A, m.7828A>G, m.9814T>C, m.10586G>A, m.12338T>C, m.13708G>A, and m.14308T>C (at the Bonferroni-corrected significance) were negatively associated with short-term CD4+T-cell recovery whereas m.93A>G, m.15218A>G, and m.16399A>G were positively associated with short-term CD4+T-cell recovery. Conclusion Our baseline mtDNA characterization stresses the attention to East-Asian female PLWH at risk of CD4+T-cell loss-related aging and noncommunicable chronic diseases. Furthermore, mtDNA variants identified in regression analyses account for heterogeneity in short-term CD4+T-cell recovery of East-Asian PLWH. These results may help individualize the East-Asian immune recovery strategies under complicated HIV management caused by CD4+T-cell loss.
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Affiliation(s)
- Anni Liu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.,Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, United States
| | - Qian Wei
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Haijiang Lin
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.,Department of AIDS/STD Control and Prevention, Taizhou City Center for Disease Control and Prevention, Taizhou, China
| | - Yingying Ding
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Yan V Sun
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, United States.,Department of Biomedical Informatics, School of Medicine, Emory University, Atlanta, GA, United States
| | - Dan Zhao
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Jiayu He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Zhonghui Ma
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Feihu Li
- School of Mathematical Sciences, Fudan University, Shanghai, China
| | - Sujuan Zhou
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Xiaoxiao Chen
- Department of AIDS/STD Control and Prevention, Taizhou City Center for Disease Control and Prevention, Taizhou, China
| | - Weiwei Shen
- Department of AIDS/STD Control and Prevention, Taizhou City Center for Disease Control and Prevention, Taizhou, China
| | - Meiyang Gao
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Na He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.,Key Laboratory of Health Technology Assessment, National Commission of Health, Fudan University, Shanghai, China
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22
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Yang X, Wang X, Lei L, Su Y, Zou Y, Liu H, Jiao A, Zhang C, Liu J, Li W, Ding R, Zhou X, Shi L, Zhang D, Sun C, Zhang B. Arid1a promotes thymocyte development through β-selection-dependent and β-selection-independent mechanisms. Immunology 2021; 165:402-413. [PMID: 34921692 DOI: 10.1111/imm.13440] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/15/2021] [Accepted: 12/15/2021] [Indexed: 01/16/2023] Open
Abstract
Early T-cell development from CD4- CD8- double-negative (DN) stage to CD4+ CD8+ double-positive (DP) stage in the thymus is regulated through multiple steps involving a batch of sequentially expressed factors. Our preliminary data and a recent report showed that AT-rich interaction domain 1A (Arid1a) is required for the transition from DN to DP stages, but the mechanism is not fully understood. In this study, we consolidated that conditional deletion of Arid1a in T-cell lineage intrinsically caused developmental blocks from DN3 to DN4 stages, as well as from DN4 to DP stages using both in vivo adoptive T-cell transfer model and in vitro culture system. The expression of intracellular TCRβ is significantly decreased in Arid1a-deficient DN4 cells compared with WT cells. OT1 transgenic TCR can rescue the defect in the transition from DN3 to DN4 stages, but not from DN to DP stages. Furthermore, we observed a comparable or stronger proliferation capacity accompanied by a significant increase in cell death in Arid1a-/- DP cells compared with that in WT controls. RNA-Seq analysis shows a significant enrichment of apoptotic pathway within differentially expressed genes between Arid1a-/- and WT DP cells, including the upregulation of Bim, Casp3 and Trp53 and the downregulation of Rorc, Bcl-XL and Mcl1. Therefore, our study reveals a novel mechanism that Arid1a controls early T-cell development by maintaining intracellular TCRβ expression-mediated β-selection and activating parallel cell survival pathways.
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Affiliation(s)
- Xiaofeng Yang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, China.,Xi'an Key Laboratory of Immune Related Diseases, Xi'an, China
| | - Xin Wang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Lei Lei
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, China.,Xi'an Key Laboratory of Immune Related Diseases, Xi'an, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Yujing Zou
- Duke University Medical Center, Durham, North Carolina, USA
| | - Haiyan Liu
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Anjun Jiao
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Cangang Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Jun Liu
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Wenhua Li
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Renyi Ding
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xiaobo Zhou
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Lin Shi
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Dan Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Chenming Sun
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China.,Xi'an Key Laboratory of Immune Related Diseases, Xi'an, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, China.,Xi'an Key Laboratory of Immune Related Diseases, Xi'an, China
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23
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Dhar S, Kaeley DK, Kanan MJ, Yildirim-Ayan E. Mechano-Immunomodulation in Space: Mechanisms Involving Microgravity-Induced Changes in T Cells. Life (Basel) 2021; 11:life11101043. [PMID: 34685414 PMCID: PMC8537592 DOI: 10.3390/life11101043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 01/03/2023] Open
Abstract
Of the most prevalent issues surrounding long-term spaceflight, the sustainability of human life and the maintenance of homeostasis in an extreme environment are of utmost concern. It has been observed that the human immune system is dysregulated in space as a result of gravitational unloading at the cellular level, leading to potential complications in astronaut health. A plethora of studies demonstrate intracellular changes that occur due to microgravity; however, these ultimately fall short of identifying the underlying mechanisms and dysfunctions that cause such changes. This comprehensive review covers the changes in human adaptive immunity due to microgravity. Specifically, there is a focus on uncovering the gravisensitive steps in T cell signaling pathways. Changes in gravitational force may lead to interrupted immune signaling cascades at specific junctions, particularly membrane and surface receptor-proximal molecules. Holistically studying the interplay of signaling with morphological changes in cytoskeleton and other cell components may yield answers to what in the T cell specifically experiences the consequences of microgravity. Fully understanding the nature of this problem is essential in order to develop proper countermeasures before long-term space flight is conducted.
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Affiliation(s)
- Sarit Dhar
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA; (S.D.); (D.K.K.); (M.J.K.)
| | - Dilpreet Kaur Kaeley
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA; (S.D.); (D.K.K.); (M.J.K.)
| | - Mohamad Jalal Kanan
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA; (S.D.); (D.K.K.); (M.J.K.)
| | - Eda Yildirim-Ayan
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA; (S.D.); (D.K.K.); (M.J.K.)
- Department of Orthopaedic Surgery, University of Toledo Medical Center, Toledo, OH 43614, USA
- Correspondence: ; Tel.: +1-419-530-8257; Fax: +1-419-530-8030
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24
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Yao Y, Chen Z, Zhang H, Chen C, Zeng M, Yunis J, Wei Y, Wan Y, Wang N, Zhou M, Qiu C, Zeng Q, Ong HS, Wang H, Makota FV, Yang Y, Yang Z, Wang N, Deng J, Shen C, Xia Y, Yuan L, Lian Z, Deng Y, Guo C, Huang A, Zhou P, Shi H, Zhang W, Yi H, Li D, Xia M, Fu J, Wu N, de Haan JB, Shen N, Zhang W, Liu Z, Yu D. Selenium-GPX4 axis protects follicular helper T cells from ferroptosis. Nat Immunol 2021; 22:1127-1139. [PMID: 34413521 DOI: 10.1038/s41590-021-00996-0] [Citation(s) in RCA: 169] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 07/05/2021] [Indexed: 02/07/2023]
Abstract
Follicular helper T (TFH) cells are a specialized subset of CD4+ T cells that essentially support germinal center responses where high-affinity and long-lived humoral immunity is generated. The regulation of TFH cell survival remains unclear. Here we report that TFH cells show intensified lipid peroxidation and altered mitochondrial morphology, resembling the features of ferroptosis, a form of programmed cell death that is driven by iron-dependent accumulation of lipid peroxidation. Glutathione peroxidase 4 (GPX4) is the major lipid peroxidation scavenger and is necessary for TFH cell survival. The deletion of GPX4 in T cells selectively abrogated TFH cells and germinal center responses in immunized mice. Selenium supplementation enhanced GPX4 expression in T cells, increased TFH cell numbers and promoted antibody responses in immunized mice and young adults after influenza vaccination. Our findings reveal the central role of the selenium-GPX4-ferroptosis axis in regulating TFH homeostasis, which can be targeted to enhance TFH cell function in infection and following vaccination.
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Affiliation(s)
- Yin Yao
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Zhian Chen
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Hao Zhang
- Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, China
| | - Cailing Chen
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ming Zeng
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Joseph Yunis
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Yunbo Wei
- Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yanmin Wan
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Radiology, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Naiqi Wang
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Mingzhe Zhou
- State Key Laboratory of Translational Medicine and Innovative Drug Development, Simcere Diagnostics Co., Ltd., Nanjing, China
| | - Chao Qiu
- Minhang Hospital and Huashan Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Qunxiong Zeng
- China-Australia Centre for Personalised Immunology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hong Sheng Ong
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Hao Wang
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Fadzai Victor Makota
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Yang Yang
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Zhaohui Yang
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, China
| | - Nan Wang
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Deng
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, China
- China-Australia Centre for Personalised Immunology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Chao Shen
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| | - Yan Xia
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, China
| | - Lin Yuan
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, China
| | - Zhaoqin Lian
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yike Deng
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cuilian Guo
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ao Huang
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pengcheng Zhou
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Haibo Shi
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Weitian Zhang
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Hongliang Yi
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Dongmei Li
- Department of Otolaryngology, Qilu Children's Hospital of Shandong University, Jinan, China
| | - Ming Xia
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Key Laboratory for Hearing Reconstruction of Shandong Province, Jinan, China
| | - Jing Fu
- Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Australia
| | - Ning Wu
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Judy B de Haan
- Baker Heart and Diabetes Institute, Monash University, Melbourne, Australia
| | - Nan Shen
- China-Australia Centre for Personalised Immunology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wenhong Zhang
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Zheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Di Yu
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia.
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, Australian National University, Canberra, Australia.
- Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, China.
- China-Australia Centre for Personalised Immunology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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25
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Benchabane S, Slimani-Kaddouri A, Acheli D, Bendimerad-Iratene T, Mesbah R, Touil-Boukoffa C. Association between increased Bcl-2, Fas and FasL levels and inflammation extent in labial salivary glands during primary Sjögren's syndrome. Endocr Metab Immune Disord Drug Targets 2021; 22:328-338. [PMID: 34370657 DOI: 10.2174/1871530321666210809155147] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/31/2021] [Accepted: 06/03/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Primary Sjögren syndrome (pSS) is a chronic autoimmune disease characterized by epithelial atrophy, mononuclear infiltration in exocrine glands resulting in defective function of these glands. In pSS, atrophy of the epithelium is caused by an increased amount of apoptosis. OBJECTIVE The main aim of this study is to investigate the role of the apoptosis-related factors by studying Bcl-2, Fas and FasL expression in relation to the extent of inflammation as well as the effect of therapy on the expression of these mediators. METHODS In pSS patients (n=62) documented for their serological and clinical features, Fas, FasL and Bcl-2 plasma levels were assessed using enzyme-linked immunosorbent assays. In the same context, we investigated their expression by immunohistochemistry analysis in the labial salivary glands samples in association with the extent of inflammation. RESULTS Interestingly, our results indicated that in pSS patients, the plasmatic Bcl-2, Fas and FasL levels, which appear to be associated with the severity of inflammation and were significantly elevated in comparison to the healthy controls. Moreover, a significant decrease in all these factors was observed in patients after combined corticosteroids-hydroxychloroquine therapy. Importantly, we report a strong positive correlation between Bcl-2 and NO levels. The immunohistochemical staining reveals a strong Bcl-2 expression in infiltrating mononuclear cells and a total absence in the acinar cells. The Bcl-2 level varies according to the severity of the pathology. However, the expression of Fas and FasL was less important and predominantly localized in infiltrating mononuclear cells. CONCLUSION Our current study highlights the involvement of Bcl-2, Fas and FasL in pSS glands injury. These factors may act as useful predictor markers of a clinical course in pSS suggesting a novel approach in the pSS patients monitoring.
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Affiliation(s)
- Sarah Benchabane
- Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Group, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers. Algeria
| | | | - Dahbia Acheli
- Internal Medicine Department, Douera Hospital, Algiers. Algeria
| | | | - Redouane Mesbah
- Anatomical Pathology Service, Issad Hassani Hospital (Beni-Messous), Algiers. Algeria
| | - Chafia Touil-Boukoffa
- Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Group, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers. Algeria
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26
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HuR Plays a Positive Role to Strengthen the Signaling Pathways of CD4 + T Cell Activation and Th17 Cell Differentiation. J Immunol Res 2021; 2021:9937243. [PMID: 34395636 PMCID: PMC8357502 DOI: 10.1155/2021/9937243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/14/2021] [Accepted: 07/11/2021] [Indexed: 01/09/2023] Open
Abstract
After antigen and/or different cytokine stimulation, CD4+ T cells activated and differentiated into distinct T helper (Th) cells via differential T cell signaling pathways. Transcriptional regulation of the activation and differentiation of naïve CD4+ T cells into distinct lineage Th cells such as Th17 cells has been fully studied. However, the role of RNA-binding protein HuR in the signaling pathways of their activation and differentiation has not been well characterized. Here, we used HuR conditional knockout (HuR KO) CD4+ T cells to study mechanisms underlying HuR regulation of T cell activation and differentiation through distinct signaling pathways. Our work showed that, mechanistically, HuR positively promoted CD3g expression by binding its mRNA and enhanced the expression of downstream adaptor Zap70 and Malt1 in activated CD4+ T cells. Compared to WT Th0 cells, HuR KO Th0 cells with reduced Bcl-2 expression are much more susceptible to apoptosis than WT Th0 cells. We also found that HuR stabilized IL-6Rα mRNA and promoted IL-6Rα protein expression, thereby upregulating its downstream phosphorylation of Jak1 and Stat3 and increased level of phosphorylation of IκBα to facilitate Th17 cell differentiation. However, knockout of HuR increased IL-22 production in Th17 cells, which was due to HuR deficiency in reducing IL-22 transcription repressor c-Maf expression. These results highlight the importance of HuR in TCR signaling and IL-6/IL-6R axis driving naïve CD4+ T cell activation and differentiation into Th17 cells.
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27
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Galal G, Tammam H, Abdel Aal A, Fahmy N, Sheneef A, Ahmed N, Zaghloul A. Role of Lymphotoxin-α Gene Polymorphism in Hepatitis C Virus-Related Chronic Liver Disorders. Infect Drug Resist 2021; 14:1921-1930. [PMID: 34079302 PMCID: PMC8164674 DOI: 10.2147/idr.s306879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/22/2021] [Indexed: 12/26/2022] Open
Abstract
Background Tumor necrosis factor (TNF) family includes lymphotoxin-alpha (LTA) which is a pro-inflammatory cytokine which plays a role in hepatic fibrogenesis. LTA gene polymorphism plays a role in different inflammatory and immunomodulatory diseases. This polymorphism is also suggested to affect chronic hepatitis C (CHC) infection course. Aim To study the contribution of LTA gene polymorphism in different chronic hepatitis C stages and hepatocellular carcinoma risk. Patients and Methods Our study included 108 chronic HCV patients grouped according to the disease stage. Group (A): CHC, group (B): liver cirrhosis (LC), group (C): LC with HCC, and group (D): healthy controls. Routine laboratory investigations, polymerase chain reaction (PCR) for quantification of HCV, abdominal ultrasonography, and Liver stiffness measurement (LSM) were done. Child–Turcotte–Pugh, Model for end-stage liver disease (MELD), and Fibrosis index based on 4 (FIB-4) scores were calculated. We used the PCR-restriction fragment length polymorphism technique for lymphotoxin-α genotyping. Results The A/G genotype was predominant in all groups. In HCC patients, G/G genotype was more frequent (31.8%) than in the LC group (19.4%), CHC group (17.8%), and controls (4.17%). A significant association was found between LTA genotypes and the child classes in HCC (P<0.01) but not in LC patients (P>0.05). HCC patients carrying A/G genotype had higher MELD scores than other genotypes. Multivariate binary logistic regression analysis confirmed that LTA G/G genotype and low platelet count were independent predictors for HCC development in patients with HCV-related LC. Conclusion Detection of LTA G/G genotype in chronic HCV patients could help to recognize high-risk patients for disease progression and HCC development.
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Affiliation(s)
- Ghada Galal
- Department of Tropical Medicine and Gastroenterology, Sohag University, Sohag, Egypt
| | - Hammam Tammam
- Department of Tropical Medicine and Gastroenterology, Sohag University, Sohag, Egypt
| | - Amal Abdel Aal
- Department of Clinical Pathology, Assiut University, Assiut, Egypt
| | - Nahed Fahmy
- Department of Medical Microbiology and Immunology, Sohag University, Sohag, Egypt
| | - Abeer Sheneef
- Department of Medical Microbiology and Immunology, Sohag University, Sohag, Egypt
| | - Nagwa Ahmed
- Department of Biochemistry, Sohag University, Sohag, Egypt
| | - Amr Zaghloul
- Department of Tropical Medicine and Gastroenterology, Sohag University, Sohag, Egypt
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28
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Shi Y, Lu Y, You J. Unfolded protein response in the activation-induced biological processes of CD8 + T cells. Pharmacol Res 2021; 169:105654. [PMID: 33964469 DOI: 10.1016/j.phrs.2021.105654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/13/2021] [Accepted: 04/23/2021] [Indexed: 10/21/2022]
Abstract
As the central part of cellular immunity, primed CD8+ T cells go through different phases of response including activation, clonal expansion, contraction and steady-state turnover, which is accompanied by a fluctuating level of endoplasmic reticulum stress that leads to the elicitation of unfolded protein response (UPR). In turn, UPR casts profound impacts on the activation-induced biological processes of CD8+ T cells, which may greatly determine the magnitude and quality of T-cell based immunity. However, current understanding of the interconnectivity between UPR and T cell-biology is not comprehensive, with details of manipulation largely unexplored. In this review, the molecular basis of UPR involved in different stages of activated CD8+ T cells and its immunological significance are discussed, with potential strategies of regulation proposed, which may provide instructive guidance for the design and optimization of T cell-based immunotherapy.
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Affiliation(s)
- Yingying Shi
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuha ngtang Road, Hangzhou, Zhejiang 310058, PR China
| | - Yichao Lu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuha ngtang Road, Hangzhou, Zhejiang 310058, PR China
| | - Jian You
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuha ngtang Road, Hangzhou, Zhejiang 310058, PR China.
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29
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Liu R, Zhao L, Cheng X, Han H, Li C, Li D, Liu A, Gao G, Zhou F, Liu F, Jiang Y, Zhu C, Xia Y. Clinical characteristics of COVID-19 patients with hepatitis B virus infection - a retrospective study. Liver Int 2021; 41:720-730. [PMID: 33351265 DOI: 10.1111/liv.14774] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 12/07/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS The outbreak of coronavirus disease 2019 (COVID-19) has been declared a pandemic. Although COVID-19 is caused by infection in the respiratory tract, extrapulmonary manifestations including dysregulation of the immune system and hepatic injury have been observed. Given the high prevalence of hepatitis B virus (HBV) infection in China, we sought to study the impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and HBV coinfection in patients. METHODS Blood samples of 50 SARS-CoV-2 and HBV coinfected patients, 56 SARS-CoV-2 mono-infected patients, 57 HBeAg-negative chronic HBV patient controls and 57 healthy controls admitted to Renmin Hospital of Wuhan University were collected in this study. Complete blood count and serum biochemistry panels including markers indicative of liver functions were performed. Cytokines including IFN-γ, TNF-α, IL-2, IL-4, IL-6 and IL-10 were evaluated. T cell, B cell and NK cell counts were measured using flow cytometry. RESULTS SARS-CoV-2 and HBV coinfection did not significantly affect the outcome of the COVID-19. However, at the onset of COVID-19, SARS-CoV-2 and HBV coinfected patients showed more severe monocytopenia and thrombocytopenia as well as more disturbed hepatic function in albumin production and lipid metabolism. Most of the disarrangement could be reversed after recovery from COVID-19. CONCLUSIONS While chronic HBV infection did not predispose COVID-19 patients to more severe outcomes, our data suggest SARS-CoV-2 and HBV coinfection poses a higher extent of dysregulation of host functions at the onset of COVID-19. Thus, caution needs to be taken with the management of SARS-CoV-2 and HBV coinfected patients.
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Affiliation(s)
- Rui Liu
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Li Zhao
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Xiaoming Cheng
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Huan Han
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Cong Li
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Dong Li
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Andrew Liu
- Frank H. Netter MD School of Medicine, Quinnipiac University, North Haven, CT, USA
| | - Guosheng Gao
- Department of Clinical Laboratory, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Feng Zhou
- Hubei Clinical Center and Key Laboratory for Intestinal and Colorectal Diseases, Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Fang Liu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| | - Yingan Jiang
- Department of Infectious Diseases, Renmin Hospital, Wuhan University, Wuhan, China
| | - Chengliang Zhu
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuchen Xia
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
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30
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Szeto C, Bloom JI, Sloane H, Lobos CA, Fodor J, Jayasinghe D, Chatzileontiadou DSM, Grant EJ, Buckle AM, Gras S. Impact of HLA-DR Antigen Binding Cleft Rigidity on T Cell Recognition. Int J Mol Sci 2020; 21:ijms21197081. [PMID: 32992915 PMCID: PMC7582474 DOI: 10.3390/ijms21197081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 01/22/2023] Open
Abstract
The interaction between T cell receptor (TCR) and peptide (p)-Human Leukocyte Antigen (HLA) complexes is the critical first step in determining T cell responses. X-ray crystallographic studies of pHLA in TCR-bound and free states provide a structural perspective that can help understand T cell activation. These structures represent a static “snapshot”, yet the nature of pHLAs and their interactions with TCRs are highly dynamic. This has been demonstrated for HLA class I molecules with in silico techniques showing that some interactions, thought to stabilise pHLA-I, are only transient and prone to high flexibility. Here, we investigated the dynamics of HLA class II molecules by focusing on three allomorphs (HLA-DR1, -DR11 and -DR15) that are able to present the same epitope and activate CD4+ T cells. A single TCR (F24) has been shown to recognise all three HLA-DR molecules, albeit with different affinities. Using molecular dynamics and crystallographic ensemble refinement, we investigate the molecular basis of these different affinities and uncover hidden roles for HLA polymorphic residues. These polymorphisms were responsible for the widening of the antigen binding cleft and disruption of pHLA-TCR interactions, underpinning the hierarchy of F24 TCR binding affinity, and ultimately T cell activation. We expanded this approach to all available pHLA-DR structures and discovered that all HLA-DR molecules were inherently rigid. Together with in vitro protein stability and peptide affinity measurements, our results suggest that HLA-DR1 possesses inherently high protein stability, and low HLA-DM susceptibility.
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Affiliation(s)
- Christopher Szeto
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Joseph I. Bloom
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Hannah Sloane
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Christian A. Lobos
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - James Fodor
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, The Australian National University, Canberra, ACT 0200, Australia
| | - Dhilshan Jayasinghe
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Demetra S. M. Chatzileontiadou
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Emma J. Grant
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Ashley M. Buckle
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
| | - Stephanie Gras
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; (C.S.); (J.I.B.); (H.S.); (C.A.L.); (J.F.); (D.J.); (D.S.M.C.); (E.J.G.); (A.M.B.)
- Australian Research Council Centre of Excellence for Advanced Molecular Imaging, Monash University, Clayton, VIC 3800, Australia
- Correspondence:
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Johnson AS, Fatemi R, Winlow W. SARS-CoV-2 Bound Human Serum Albumin and Systemic Septic Shock. Front Cardiovasc Med 2020; 7:153. [PMID: 33088822 PMCID: PMC7498713 DOI: 10.3389/fcvm.2020.00153] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022] Open
Abstract
The emergence of the COVID-19 virus and the subsequent pandemic have driven a great deal of research activity. The effects of COVID-19 are caused by the severe respiratory syndrome coronavirus 2 (SARS-CoV-2) and it is the underlying actions of SARs-CoV-2 virions on the endothelial glycocalyx that we consider here. One of the key factors in COVID-19 infection is its almost unique age-related profile, with a doubling in mortality every 10 years after the age of 50. The endothelial glycocalyx layer is essential in maintaining normal fluid homeostasis, but is fragile and prone to pathophysiological damage. It is physiologically significant in capillary microcirculation and in fluid distribution to the tissues. Human serum albumin (HSA), the most abundant protein in plasma, is created in the liver which also maintains its concentration, but this reduces by 10-15% after 50 years of age. HSA transports hormones, free fatty acids and maintains oncotic pressure, but SARS-CoV-2 virions bind competitively to HSA diminishing its normal transport function. Furthermore, hypoalbuminemia is frequently observed in patients with such conditions as diabetes, hypertension, and chronic heart failure, i.e., those most vulnerable to SARS-CoV-2 infection. Hypoalbuminemia, coagulopathy, and vascular disease have been linked in COVID-19 and have been shown to predict outcome independent of age and morbidity. Hypoalbuminemia is also known factor in sepsis and Acute respiratory distress syndrome (ARDS) occurs when fluids build-up in the alveoli and it is associated with sepsis, whose mechanism is systemic, being associated with the fluid and logistic mechanisms of the circulation. Glycocalyx damage is associated with changes plasma protein concentration, particularly HSA and blockage of albumin transport can produce the systemic symptoms seen in SARS-CoV-2 infection and sepsis. We therefore conclude that albumin binding to SARS-CoV-2 virions may inhibit the formation of the endothelial glycocalyx by inhibition of albumin transport binding sites. We postulate that albumin therapy to replace bound albumin might alleviate some of the symptoms leading to sepsis and that clinical trials to test this postulation should be initiated as a matter of urgency.
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Affiliation(s)
- Andrew S. Johnson
- Dipartimento di Biologia, Università Degli Studi di Naples, Federico II, Naples, Italy
| | - Rouholah Fatemi
- Physiology Research Center (PRC), School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - William Winlow
- Dipartimento di Biologia, Università Degli Studi di Naples, Federico II, Naples, Italy
- Institute of Ageing and Chronic Diseases, The Apex Building, University of Liverpool, Liverpool, United Kingdom
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Mi Y, Liu Q, Li P, Xu J, Yang Q, Tang J. Targeted gold nanorods combined with low-intensity nsPEFs enhance antimelanoma efficacy in vitro. NANOTECHNOLOGY 2020; 31:355102. [PMID: 32396891 DOI: 10.1088/1361-6528/ab925f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
High-intensity nanosecond pulsed electric fields (nsPEFs) are a novel treatment with promising applications for cell stimulation and tissue ablation, and many research studies have shown that gold nanorods (GNRs) are high-conductivity nanomaterials that can enhance electroporation for biomedical applications. In addition, the folic acid (FA) receptor has been demonstrated as a valuable therapeutic target that is highly expressed in a variety of cancers. To reduce the electric field strength required to treat tumors by nsPEFs, for the first time, gold nanorods with folic acid were proposed to achieve higher antimelanoma efficacy at lower electric field intensity in this study. The surface of polyethylene glycol-gold nanorods with good biocompatibility was further modified by folic acid (FA) to provide modified gold nanorods (GNR-PEG-FA) with specific targeted recognition of A375 melanoma cells. The binding of GNRs to A375 melanoma cells was observed by dark field microscopy. After combined treatment with nsPEFs and GNRs, cell viability was evaluated by a CCK-8 assay. Flow cytometry was performed to evaluate apoptosis and the cell cycle. And active caspase 3 was also detected after treatment. The antimelanoma efficacy was enhanced in a pulsed electric field-dependent manner. More importantly, compared with the group of nsPEFs alone and gold nanorods without FA, treating cells with nsPEFs combined with GNR-PEG-FA resulted in a lower percentage of viable cells, higher percentages of necrosis and apoptosis and higher concentration of active caspase 3 and induced cell cycle arrest in S phase, effectively inhibiting the proliferation of A375 melanoma cells. nsPEFs combined with GNR-PEG-FA showed the best antimelanoma efficacy in vitro and effectively killed melanoma cells with low-intensity nsPEFs. The combined treatment of cells with nsPEFs and GNR-PEG-FA is expected to become a safer and more efficient physical treatment of melanomas.
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Affiliation(s)
- Yan Mi
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
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Bovine Dialyzable Leukocyte Extract IMMUNEPOTENT-CRP Induces Selective ROS-Dependent Apoptosis in T-Acute Lymphoblastic Leukemia Cell Lines. JOURNAL OF ONCOLOGY 2020; 2020:1598503. [PMID: 32587616 PMCID: PMC7298273 DOI: 10.1155/2020/1598503] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/15/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022]
Abstract
Immunotherapies strengthen the immune system to fight multiple diseases such as infections, immunodeficiencies, and autoimmune diseases, and recently, they are being used as an adjuvant in cancer treatment. IMMUNEPOTENT-CRP (I-CRP) is an immunotherapy made of bovine dialyzable leukocyte extract (bDLE) that has chemoprotective and immunomodulatory effects in different cellular populations of the immune system and antitumor activity in different cancer cell lines. Our recent results suggest that the antineoplastic effect of I-CRP is due to the characteristics of cancer cells. To confirm, we evaluated whether the selectivity is due to cell lineage or characteristics of cancer cells, testing cytotoxicity in T-acute lymphoblastic leukemia cells and their cell death mechanism. Here, we assessed the effect of I-CRP on cell viability and cell death. To determine the mechanism of cell death, we tested cell cycle, mitochondrial and nuclear alterations, and caspases and reactive oxygen species (ROS) and their role in cell death mechanism. Our results show that I-CRP does not affect cell viability in noncancer cells and induces selective cytotoxicity in a dose-dependent manner in leukemic cell lines. I-CRP also induces mitochondrial damage through proapoptotic and antiapoptotic protein modulation (Bax and Bcl-2) and ROS production, nuclear alterations including DNA damage (γ-H2Ax), overexpression of p53, cell cycle arrest, and DNA degradation. I-CRP induced ROS-dependent apoptosis in leukemic cells. Overall, here, we show that I-CRP cytotoxicity is selective to leukemic cells, inducing ROS-dependent apoptosis. This research opens the door to further exploration of their role in the immune system and the cell death mechanism that could potentially work in conjunction with other therapies including hematological malignances.
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Recent insights of T cell receptor-mediated signaling pathways for T cell activation and development. Exp Mol Med 2020; 52:750-761. [PMID: 32439954 PMCID: PMC7272404 DOI: 10.1038/s12276-020-0435-8] [Citation(s) in RCA: 187] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/26/2020] [Accepted: 04/08/2020] [Indexed: 12/18/2022] Open
Abstract
T cell activation requires extracellular stimulatory signals that are mainly mediated by T cell receptor (TCR) complexes. The TCR recognizes antigens on major histocompatibility complex molecules with the cooperation of CD4 or CD8 coreceptors. After recognition, TCR-induced signaling cascades that propagate signals via various molecules and second messengers are induced. Consequently, many features of T cell-mediated immune responses are determined by these intracellular signaling cascades. Furthermore, differences in the magnitude of TCR signaling direct T cells toward distinct effector linages. Therefore, stringent regulation of T cell activation is crucial for T cell homeostasis and proper immune responses. Dysregulation of TCR signaling can result in anergy or autoimmunity. In this review, we summarize current knowledge on the pathways that govern how the TCR complex transmits signals into cells and the roles of effector molecules that are involved in these pathways.
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Pan Z, Luo Y, Xia Y, Zhang X, Qin Y, Liu W, Li M, Liu X, Zheng Q, Li D. Cinobufagin induces cell cycle arrest at the S phase and promotes apoptosis in nasopharyngeal carcinoma cells. Biomed Pharmacother 2019; 122:109763. [PMID: 31918288 DOI: 10.1016/j.biopha.2019.109763] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 02/08/2023] Open
Abstract
Emerging evidence suggests that cinobufagin, an active ingredient in Venenum Bufonis, inhibits cell proliferation in several tumor cells. However, the anti-tumor effect of cinobufagin on nasopharyngeal carcinoma and the underlying molecular mechanisms are still unclear. In this study, we found that cinobufagin significantly inhibits the proliferation of nasopharyngeal carcinoma HK-1 cells. Further analyses demonstrated that cinobufagin induces cell cycle arrest at the S phase in HK-1 cells through downregulating the levels of CDK2 and cyclin E. Moreover, cinobufagin significantly downregulates the protein level of Bcl-2 and upregulates the levels of Bax, subsequently increasing the levels of cytoplasmic cytochrome c, Apaf-1, cleaved PARP1, cleaved caspase-3, and cleaved caspase-9, leading to HK-1 apoptosis. Furthermore, we found that cinobufagin significantly increases ROS levels and decreases the mitochondrial membrane potential in HK-1 cells. Collectively, these data imply that cinobufagin induces cell cycle arrest at the S phase and induces apoptosis through increasing ROS levels, thereby inhibiting cell proliferation in HK-1 cells. Therefore, cinobufagin is a promising bioactive agent that may contribute to the development of treatment strategies of nasopharyngeal carcinoma.
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Affiliation(s)
- Zhaohai Pan
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Yongchuan Luo
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; Intravenous Drug Distribution Center, Department of Pharmacy, Yantai Affiliated Hosptial of Binzhou Medical University, 264100, Yantai, China
| | - Yuan Xia
- Key Laboratory of Xinjiang Endemic Phytomedicine Resources of Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, Xinjiang, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Xin Zhang
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Yao Qin
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Wenjing Liu
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Minjing Li
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Xiaona Liu
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China
| | - Qiusheng Zheng
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; Key Laboratory of Xinjiang Endemic Phytomedicine Resources of Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, Xinjiang, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China.
| | - Defang Li
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China; School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, 264003, Yantai, China.
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Gao J, Gu J, Pan X, Gan X, Ju Z, Zhang S, Xia Y, Lu L, Wang X. Blockade of miR-142-3p promotes anti-apoptotic and suppressive function by inducing KDM6A-mediated H3K27me3 demethylation in induced regulatory T cells. Cell Death Dis 2019; 10:332. [PMID: 30988391 PMCID: PMC6465300 DOI: 10.1038/s41419-019-1565-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 02/06/2023]
Abstract
In vitro induced human regulatory T cells (iTregs) have in vivo therapeutic utility. MicroRNAs (miRNAs) are a family of approximately 22-nucleotide non-coding RNAs that are processed from longer precursors by the RNases Drosha and Dicer. miRNAs regulate post-transcriptional protein expression through messenger RNA destabilization or translational silencing; miR-142-3p regulates natural Treg function through autophagy. We hypothesized that this miRNA may also have an iTreg regulation function. Antagomir-mediated knockdown of miR-142-3p improved Foxp3 (forkhead box P3) expression, regulatory function, cytokine expression, and apoptosis of iTregs in vitro, with or without inflammatory cytokine stimulation. miR-142-3p knockdown increased autophagy-related protein 16-1-mediated autophagy. Target prediction and luciferase assay results indicated that miR-142-3p binds directly to lysine demethylase 6A (KDM6A), which resulted in demethylation of H3K27me3 and in turn upregulated expression of the anti-apoptotic protein Bcl-2. Based on these results, we propose a novel strategy that uses knockdown of miR-142-3p to enhance anti-apoptotic ability and function of iTregs by increasing KDM6A and Bcl-2 expression. This approach might be used as a treatment to control established chronic immune-mediated autoimmune and inflammatory diseases.
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Affiliation(s)
- Ji Gao
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Jian Gu
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Xiongxiong Pan
- Department of Anesthesiology, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Xiaojie Gan
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Zheng Ju
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Shaopeng Zhang
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Yongxiang Xia
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China
| | - Ling Lu
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China.
| | - Xuehao Wang
- Hepatobiliary Center, First Affiliated Hospital, Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, China.
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Aresvik DM, Øverland T, Lima K, Pettersen RD, Abrahamsen TG. Lymphocyte Apoptosis and FAS Expression in Patients with 22q11.2 Deletion Syndrome. J Clin Immunol 2018; 39:65-74. [PMID: 30569262 DOI: 10.1007/s10875-018-0579-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 12/03/2018] [Indexed: 01/05/2023]
Abstract
PURPOSE Immunodeficiency is one of the key features of 22q11.2 deletion syndrome (del), and it is seen in approximately 75% of the patients. The degree of immunodeficiency varies widely, from no circulating T cells to normal T cell counts. It has been hypothesized that the low number of T cells may at least in part be due to increased apoptosis of T cells. Increased spontaneous T cell apoptosis has been reported in one patient with 22q11.2del, but this has not been further investigated. METHODS A national cohort of patients with a proven heterozygous deletion of chromosome 22q11.2 diagnosed by FISH or MLPA and a group of age and sex matched controls were studied. Spontaneous and activation-induced apoptosis, in addition to FAS expression on lymphocytes, were measured using flow cytometry. Serum levels of FASL were analyzed using ELISA. RESULTS There was no increased spontaneous apoptosis in patients with 22q11.2del. Upon activation, anti-FAS-induced apoptosis was significantly increased in patients compared to those in controls, while there was no difference in activation induced cell death or activated cell autonomous death. We also found a significant increase in expression of FAS on freshly isolated lymphocytes from patients, while there was no difference in serum levels of FASL. Patients with congenital heart defects (CHD) had significantly higher serum levels of FASL compared to non-CHD patients. CONCLUSION We have shown increased FAS expression on lymphocytes from patients with 22q11.2del as well as increased levels of FASL in patients with CHD. Those changes may contribute to the pathophysiology of the 22q11.2del.
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Affiliation(s)
- Dina M Aresvik
- Department of Paediatric Research, Oslo University Hospital, Oslo, Norway.
| | - Torstein Øverland
- Department of Paediatric Medicine, Oslo University Hospital, Oslo, Norway
| | - Kari Lima
- Department of Paediatric Medicine, Oslo University Hospital, Oslo, Norway
- Department of Endocrinology, Akershus University Hospital, Lørenskog, Norway
| | - Rolf D Pettersen
- Norwegian National Unit for Newborn Screening, Oslo University Hospital, Oslo, Norway
| | - Tore G Abrahamsen
- Center for Rare Diseases, Division of Pediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway
- University of Oslo, Oslo, Norway
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Song Y, Yang H, Jiang K, Wang BM, Lin R. miR-181a regulates Th17 cells distribution via up-regulated BCL-2 in primary biliary cholangitis. Int Immunopharmacol 2018; 64:386-393. [DOI: 10.1016/j.intimp.2018.09.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/16/2018] [Accepted: 09/17/2018] [Indexed: 12/12/2022]
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Hu Z, Zou Q, Su B. Regulation of T cell immunity by cellular metabolism. Front Med 2018; 12:463-472. [PMID: 30112717 DOI: 10.1007/s11684-018-0668-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/17/2018] [Indexed: 12/14/2022]
Abstract
T cells are an important adaptive immune response arm that mediates cell-mediated immunity. T cell metabolism plays a central role in T cell activation, proliferation, differentiation, and effector function. Specific metabolic programs are tightly controlled to mediate T cell immune responses, and alterations in T cell metabolism may result in many immunological disorders. In this review, we will summarize the main T cell metabolic pathways and the important factors participating in T cell metabolic programming during T cell homeostasis, differentiation, and function.
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Affiliation(s)
- Zhilin Hu
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qiang Zou
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Bing Su
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Vanhanen R, Tuulasvaara A, Mattila J, Pätilä T, Arstila TP. Common gamma chain cytokines promote regulatory T cell development and survival at the CD4 + CD8 + stage in the human thymus. Scand J Immunol 2018; 88:e12681. [PMID: 29904934 DOI: 10.1111/sji.12681] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/12/2018] [Indexed: 12/22/2022]
Abstract
Thymic commitment of human FOXP3+ regulatory T cells begins at the double-positive (DP) CD4+ CD8+ stage. In the current study, we show that interleukin-2 promotes the development of FOXP3+ thymocytes and enhances their survival at the DP phase. IL-2 increases the frequency of FOXP3+ cells and promotes the Treg phenotype after TCR-mediated positive selection at the most mature DP stage. However, it has no effect on FOXP3+ cells at the earlier maturation steps before positive selection. DP FOXP3+ thymocytes are highly susceptible to cell death but IL-2 promotes their survival. The anti-apoptotic protein BCL-2 (B Cell Lymphoma 2) is also upregulated by IL-2 at the most mature DP stage. In addition to IL-2, we identify IL-15 to have a significant role in the upregulating FOXP3 and survival of Tregs at the DP phase. IL-7 also increases the expression of BCL-2 in the DP FOXP3+ thymocytes. Our results indicate that common gamma chain cytokines IL-2, IL-7 and IL-15 promote the development of regulatory T cells at the most mature DP stage after TCR-mediated positive selection through suppressing cell death.
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Affiliation(s)
- Reetta Vanhanen
- Department of Bacteriology and Immunology and Research Programs Unit, Immunobiology, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Anni Tuulasvaara
- Department of Bacteriology and Immunology and Research Programs Unit, Immunobiology, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Joonatan Mattila
- Department of Bacteriology and Immunology and Research Programs Unit, Immunobiology, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Tommi Pätilä
- Department of Surgery, Hospital for Children and Adolescents, Helsinki University Hospital, Helsinki, Finland
| | - T Petteri Arstila
- Department of Bacteriology and Immunology and Research Programs Unit, Immunobiology, Haartman Institute, University of Helsinki, Helsinki, Finland
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Qureshi AA, Khan DA, Mushtaq S, Ye SQ, Xiong M, Qureshi N. δ-Tocotrienol feeding modulates gene expression of EIF2, mTOR, protein ubiquitination through multiple-signaling pathways in chronic hepatitis C patients. Lipids Health Dis 2018; 17:167. [PMID: 30031388 PMCID: PMC6054847 DOI: 10.1186/s12944-018-0804-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 06/26/2018] [Indexed: 12/12/2022] Open
Abstract
Background δ-Tocotrienol is a naturally occurring proteasome inhibitor, which has the capacity to inhibit proliferation and induce apoptosis in several cancer cells obtained from several organs of humans, and other cancer cell lines. Moreover, results of plasma total mRNAs after δ-tocotrienol feeding to hepatitis C patients revealed significant inhibition in the expression of pro-inflammatory cytokines (TNF-α, VCAM1, proteasome subunits) and induction in the expression of ICAM1 and IFN-γ after post-treatment. This down-regulation of proteasome subunits leads to autophagy, apoptosis of immune cells and several genes. The present study describes RNA-sequence analysis of plasma total mRNAs obtained from δ-tocotrienol treatment of hepatitis C patients on gene expression regulated by proteasome. Methods Pooled specimens of plasma total mRNAs of pre-dose versus post-dose of δ-tocotrienol treatment of hepatitis C patients were submitted to RNA-sequence analyses. The data based on > 1 and 8-fold expression changes of 2136 genes were uploaded into “Ingenuity Pathway Analyses (IPA)” for core analysis, which describes possible canonical pathways, upstream regulators, diseases and functional metabolic networks. Results The IPA of “molecules” indicated fold change in gene expression of 953 molecules, which covered several categories of biological biomarkers. Out of these, gene expression of 220 related to present study, 12 were up-regulated, and 208 down-regulated after δ-tocotrienol treatment. The gene expression of transcription regulators (ceramide synthase 3 and Mohawk homeobox) were up-regulated, and gene expression of 208 molecules were down-regulated, involved in several biological functions (HSP90AB1, PSMC3, CYB5R4, NDUFB1, CYP2R1, TNFRF1B, VEGFA, GPR65, PIAS1, SFPQ, GPS2, EIF3F, GTPBP8, EIF4A1, HSPA14, TLR8, TUSSC2). IPA of “causal network” indicated gene regulators (676), in which 76 down-regulated (26 s proteasomes, interleukin cytokines, and PPAR-ligand-PPA-Retinoic acid-RXRα, PPARγ-ligand-PPARγ-Retinoic acid-RARα, IL-21, IL-23) with significant P-values. The IPA of “diseases and functions” regulators (85) were involved with cAMP, STAT2, 26S proteasome, CSF1, IFNγ, LDL, TGFA, and microRNA-155-5p, miR-223, miR-21-5p. The IPA of “upstream analysis” (934) showed 57 up-regulated (mainly 38 microRNAs) and 64 gene regulators were down-regulated (IL-2, IL-5, IL-6, IL-12, IL-13, IL-15, IL-17, IL-18, IL-21, IL-24, IL-27, IL-32), interferon β-1a, interferon γ, TNF-α, STAT2, NOX1, prostaglandin J2, NF-κB, 1κB, TCF3, and also miRNA-15, miRNA-124, miRNA-218-5P with significant activation of Z-Score (P < 0.05). Conclusions This is first report describing RNA-sequence analysis of δ-tocotrienol treated plasma total mRNAs obtained from chronic hepatitis C patients, that acts via multiple-signaling pathways without any side-effects. These studies may lead to development of novel classes of drugs for treatment of chronic hepatitis C patients. Electronic supplementary material The online version of this article (10.1186/s12944-018-0804-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Asaf A Qureshi
- Department of Biomedical Science, School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, 64108, USA.
| | - Dilshad A Khan
- Department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology (AFIP), National University of Medical Sciences, Rawalpindi, 64000, Pakistan
| | - Shahida Mushtaq
- Department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology (AFIP), National University of Medical Sciences, Rawalpindi, 64000, Pakistan
| | - Shui Qing Ye
- Department of Biomedical Science, School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, 64108, USA.,Division of Experimental and Translational Genetics, Department of Pediatrics, Childern's Mercy Hospital, 2401 Gillham Road, Kansas City, MO, 64108, USA.,Department of Biomedical and Health Informatics, School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, 64108, USA
| | - Min Xiong
- Department of Biomedical Science, School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, 64108, USA.,Division of Experimental and Translational Genetics, Department of Pediatrics, Childern's Mercy Hospital, 2401 Gillham Road, Kansas City, MO, 64108, USA
| | - Nilofer Qureshi
- Department of Biomedical Science, School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, 64108, USA.,Pharmacology/Toxicology, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO, 64108, USA
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Hamdi AM, Jiang ZZ, Guerram M, Yousef BA, Hassan HM, Ling JW, Zhang LY. Biochemical and computational evaluation of Triptolide-induced cytotoxicity against NSCLC. Biomed Pharmacother 2018; 103:1557-1566. [PMID: 29864943 DOI: 10.1016/j.biopha.2018.04.198] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/26/2018] [Accepted: 04/29/2018] [Indexed: 12/14/2022] Open
Abstract
Triptolide is the major bioactive component isolated from the Chinese Medicinal plant Tripterygium wilfordii. Despite the growing interest and the plethora of reports discussing the pharmacological activity of this diterpenoid, no clear consensus regarding its cellular targets and full mechanism of action has been reached. In the present work, a combined in vitro and in silico approach was used to evaluate the biological activity of Triptolide on Non-small cell lung cancer (NSCLC). In vitro, Triptolide treatment induced apoptosis in NSCLC cell lines and down-regulated the phosphorylation of AKT, mTOR, and p70S6K. Triptolide also impacted cellular glycolysis as well as the antioxidant response through the impairment of glucose utilization, HKII, glutathione, and NRF2 levels. Molecular docking results examined the possible interactions between Triptolide and AKT and predicted an allosteric binding to AKT-1 structure. Molecular dynamics simulations were further used to evaluate the stability of the complex formed by Triptolide's best conformer and AKT. These findings provide an insightful approach to the anticancer effect of Triptolide against NSCLC and highlight a possible new role for AKT/mTOR HKII inhibition.
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Affiliation(s)
- Aida M Hamdi
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Zhen-Zhou Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Ministry of Education, Nanjing, China
| | - Mounia Guerram
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Bashir A Yousef
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China; Department of Pharmacology, Faculty of Pharmacy, University of Khartoum, Khartoum, Sudan
| | - Hozeifa M Hassan
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Jia-Wei Ling
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Lu-Yong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China; Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China; Center for Drug Screening and Pharmacodynamics Evaluation, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Wang J, Li Z, Gao L, Qi Y, Zhu H, Qin X. The regulation effect of AMPK in immune related diseases. SCIENCE CHINA-LIFE SCIENCES 2017; 61:523-533. [DOI: 10.1007/s11427-017-9169-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 08/28/2017] [Indexed: 12/12/2022]
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Sánchez-Ramón S, Faure F. The Thymus/Neocortex Hypothesis of the Brain: A Cell Basis for Recognition and Instruction of Self. Front Cell Neurosci 2017; 11:340. [PMID: 29163052 PMCID: PMC5663735 DOI: 10.3389/fncel.2017.00340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 10/13/2017] [Indexed: 12/18/2022] Open
Abstract
The recognition of internal and external sources of stimuli, the self from non-self, seems to be an intrinsic property to the adequate functioning of the immune system and the nervous system, both complex network systems that have evolved to safeguard the self biological identity of the organism. The mammalian brain development relies on dynamic and adaptive processes that are now well described. However, the rules dictating this highly constrained developmental process remain elusive. Here we hypothesize that there is a cellular basis for brain selfhood, based on the analogy of the global mechanisms that drive the self/non-self recognition and instruction by the immune system. In utero education within the thymus by multi-step selection processes discard overly low and high affinity T-lymphocytes to self stimuli, thus avoiding expendable or autoreactive responses that might lead to harmful autoimmunity. We argue that the self principle is one of the chief determinants of neocortical brain neurogenesis. According to our hypothesis, early-life education on self at the subcortical plate of the neocortex by selection processes might participate in the striking specificity of neuronal repertoire and assure efficiency and self tolerance. Potential implications of this hypothesis in self-reactive neurological pathologies are discussed, particularly involving consciousness-associated pathophysiological conditions, i.e., epilepsy and schizophrenia, for which we coined the term autophrenity.
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Affiliation(s)
- Silvia Sánchez-Ramón
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain.,Department of Microbiology I, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Florence Faure
- PSL Research University, INSERM U932, Institut Curie, Paris, France
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Besson JCF, de Carvalho Picoli C, Matioli G, Natali MRM. Methyl jasmonate: a phytohormone with potential for the treatment of inflammatory bowel diseases. ACTA ACUST UNITED AC 2017; 70:178-190. [PMID: 29072315 DOI: 10.1111/jphp.12839] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 09/21/2017] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The phytohormone methyl jasmonate (MeJA) has been identified as a vital cell regulator in plants. This substance is analogous to eicosanoids and similar to that of anti-inflammatory prostaglandins. In animals and in animal cells, it displayed an efficient neuroprotective, anti-inflammatory and antioxidant action; while in tumoral strains, it demonstrates a potentially highly attractive mechanism of apoptosis induction through various cellular and molecular mechanisms. The aim of the present review was to explore two new hypotheses that explain the action of MeJA, a lipid phytohormone and its potentially anti-apoptotic mechanism for use as a therapeutic target for future treatment of Inflammatory bowel diseases (IBDs). KEY FINDINGS Methyl jasmonate is a new candidate for the treatment of IBDs, modulating the expression of the major classes of caspase-type protease families that selectively act on the extrinsic and intrinsic pathways of the apoptotic process. Its action is based on the reduction of the expression in tumour necrosis factor tissue levels and the modulating action of reactive oxygen species production, acting only on the destruction of cells that express the diseased phenotype, and preserving cells that are not transformed. CONCLUSIONS Methyl jasmonate may represent an alternative for the transduction processes of important signals in the cellular renewal of the intestinal mucosa.
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Affiliation(s)
| | | | - Graciette Matioli
- Department of Pharmacology and Therapeutics, State University of Maringá, Maringá, PR, Brazil
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Attiq A, Jalil J, Husain K. Annonaceae: Breaking the Wall of Inflammation. Front Pharmacol 2017; 8:752. [PMID: 29104539 PMCID: PMC5654839 DOI: 10.3389/fphar.2017.00752] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/03/2017] [Indexed: 12/12/2022] Open
Abstract
Inventories of tropical forests have listed Annonaceae as one of the most diverse plant families. For centuries, it is employed in traditional medicines to cure various pathological conditions including snakebite, analgesic, astringent, diarrhea, dysentery, arthritis pain, rheumatism, neuralgia, and weight loss etc. Phytochemical analysis of Annonaceae family have reported the occurrence of alkaloids, flavonoids, triterpenes, diterpenes and diterpene flavone glycosides, sterols, lignans, and annonaceous acetogenin characteristically affiliated with Annonaceae sp. Numerous past studies have underlined the pleotropic pharmacological activities of the crude extracts and isolated compounds from Annonaceae species. This review is an effort to abridge the ethnobotany, morphology, phytochemistry, toxicity, and particularly focusing on the anti-inflammatory activity of the Annonaceae species.
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Affiliation(s)
- Ali Attiq
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Juriyati Jalil
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Khairana Husain
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Microbiota promotes systemic T-cell survival through suppression of an apoptotic factor. Proc Natl Acad Sci U S A 2017; 114:5497-5502. [PMID: 28487480 DOI: 10.1073/pnas.1619336114] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Symbiotic microbes impact the severity of a variety of diseases through regulation of T-cell development. However, little is known regarding the molecular mechanisms by which this is accomplished. Here we report that a secreted factor, Erdr1, is regulated by the microbiota to control T-cell apoptosis. Erdr1 expression was identified by transcriptome analysis to be elevated in splenic T cells from germfree and antibiotic-treated mice. Suppression of Erdr1 depends on detection of circulating microbial products by Toll-like receptors on T cells, and this regulation is conserved in human T cells. Erdr1 was found to function as an autocrine factor to induce apoptosis through caspase 3. Consistent with elevated levels of Erdr1, germfree mice have increased splenic T-cell apoptosis. RNA sequencing of Erdr1-overexpressing cells identified the up-regulation of genes involved in Fas-mediated cell death, and Erdr1 fails to induce apoptosis in Fas-deficient cells. Importantly, forced changes in Erdr1 expression levels dictate the survival of auto-reactive T cells and the clinical outcome of neuro-inflammatory autoimmune disease. Cellular survival is a fundamental feature regulating appropriate immune responses. We have identified a mechanism whereby the host integrates signals from the microbiota to control T-cell apoptosis, making regulation of Erdr1 a potential therapeutic target for autoimmune disease.
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Kalra J, Dhar A. Double-stranded RNA-dependent protein kinase signalling and paradigms of cardiometabolic syndrome. Fundam Clin Pharmacol 2017; 31:265-279. [DOI: 10.1111/fcp.12261] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 11/30/2016] [Accepted: 12/16/2016] [Indexed: 12/28/2022]
Affiliation(s)
- Jaspreet Kalra
- Department of Pharmacy; Birla Institute of Technology and Sciences Pilani, Hyderabad Campus; Jawahar Nagar Shameerpet, Hyderabad Andhra Pradesh 500078 India
| | - Arti Dhar
- Department of Pharmacy; Birla Institute of Technology and Sciences Pilani, Hyderabad Campus; Jawahar Nagar Shameerpet, Hyderabad Andhra Pradesh 500078 India
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Xue J, Fu C, Cong Z, Peng L, Peng Z, Chen T, Wang W, Jiang H, Wei Q, Qin C. Galectin-3 promotes caspase-independent cell death of HIV-1-infected macrophages. FEBS J 2016; 284:97-113. [PMID: 27981746 DOI: 10.1111/febs.13955] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 10/10/2016] [Accepted: 11/03/2016] [Indexed: 12/25/2022]
Abstract
HIV-1-infected macrophages are a key contributor to the formation of a viral reservoir and new treatment strategies focus on eliminating this pool of virus. Galectin-3 is a potent apoptosis-inducing protein that regulates diverse cellular activities. In the present study, we investigated whether galectin-3 could induce cell death in HIV-1-infected macrophages using HIV-1-infected THP1 monocytes (THP1-MNs) and THP1-derived macrophages (THP1-MΦs) as in vitro cellular models. We found that THP1-MΦs were more resistant than the THP1-MNs to HIV-1 infection-induced death, and that HIV-1 infection of the THP1-MΦs increased expression of the anti-apoptotic proteins Mcl-1, Bcl-2 and Bcl-xL. Additionally, galectin-3 but not FasL, tumor necrosis factor (TNF)-related apoptosis-inducing ligand or TNF-α, could induce cell death in HIV-1-infected THP1-MΦs. A similar result was shown for primary human monocyte-derived macrophages. Galectin-3-induced cell death was also significantly increased in macrophages obtained from SIVmac251-infected macaques compared to that of macrophages from healthy macaques. Furthermore, galectin-3-induced cell death in HIV-1-infected THP1-MΦs was caspase independent. Interestingly, endonuclease G (Endo G) was increased in the nucleus and decreased in the cytoplasm of galectin-3-treated cells; thus, galectin-3-induced cell death in HIV-1-infected THP1-MΦs is most likely related to the translocation of Endo G from the cytoplasm to the nucleus. These findings suggest that galectin-3 may potentially aid in the eradication of HIV-1/SIV-infected macrophages.
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Affiliation(s)
- Jing Xue
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Chunyan Fu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Zhe Cong
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Lingjuan Peng
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Zhuoying Peng
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Ting Chen
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Wei Wang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Hong Jiang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Qiang Wei
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
| | - Chuan Qin
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, China
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Metabolic pathways in T cell activation and lineage differentiation. Semin Immunol 2016; 28:514-524. [PMID: 27825556 DOI: 10.1016/j.smim.2016.10.009] [Citation(s) in RCA: 308] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 10/07/2016] [Accepted: 10/14/2016] [Indexed: 12/13/2022]
Abstract
Recent advances in the field of immunometabolism support the concept that fundamental processes in T cell biology, such as TCR-mediated activation and T helper lineage differentiation, are closely linked to changes in the cellular metabolic programs. Although the major task of the intermediate metabolism is to provide the cell with a constant supply of energy and molecular precursors for the production of biomolecules, the dynamic regulation of metabolic pathways also plays an active role in shaping T cell responses. Key metabolic processes such as glycolysis, fatty acid and mitochondrial metabolism are now recognized as crucial players in T cell activation and differentiation, and their modulation can differentially affect the development of T helper cell lineages. In this review, we describe the diverse metabolic processes that T cells engage during their life cycle from naïve towards effector and memory T cells. We consider in particular how the cellular metabolism may actively support the function of T cells in their different states. Moreover, we discuss how molecular regulators such as mTOR or AMPK link environmental changes to adaptations in the cellular metabolism and elucidate the consequences on T cell differentiation and function.
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