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Ahator SD, Hegstad K, Lentz CS, Johannessen M. Deciphering Staphylococcus aureus-host dynamics using dual activity-based protein profiling of ATP-interacting proteins. mSystems 2024; 9:e0017924. [PMID: 38656122 PMCID: PMC11097646 DOI: 10.1128/msystems.00179-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 03/26/2024] [Indexed: 04/26/2024] Open
Abstract
The utilization of ATP within cells plays a fundamental role in cellular processes that are essential for the regulation of host-pathogen dynamics and the subsequent immune response. This study focuses on ATP-binding proteins to dissect the complex interplay between Staphylococcus aureus and human cells, particularly macrophages (THP-1) and keratinocytes (HaCaT), during an intracellular infection. A snapshot of the various protein activity and function is provided using a desthiobiotin-ATP probe, which targets ATP-interacting proteins. In S. aureus, we observe enrichment in pathways required for nutrient acquisition, biosynthesis and metabolism of amino acids, and energy metabolism when located inside human cells. Additionally, the direct profiling of the protein activity revealed specific adaptations of S. aureus to the keratinocytes and macrophages. Mapping the differentially activated proteins to biochemical pathways in the human cells with intracellular bacteria revealed cell-type-specific adaptations to bacterial challenges where THP-1 cells prioritized immune defenses, autophagic cell death, and inflammation. In contrast, HaCaT cells emphasized barrier integrity and immune activation. We also observe bacterial modulation of host processes and metabolic shifts. These findings offer valuable insights into the dynamics of S. aureus-host cell interactions, shedding light on modulating host immune responses to S. aureus, which could involve developing immunomodulatory therapies. IMPORTANCE This study uses a chemoproteomic approach to target active ATP-interacting proteins and examines the dynamic proteomic interactions between Staphylococcus aureus and human cell lines THP-1 and HaCaT. It uncovers the distinct responses of macrophages and keratinocytes during bacterial infection. S. aureus demonstrated a tailored response to the intracellular environment of each cell type and adaptation during exposure to professional and non-professional phagocytes. It also highlights strategies employed by S. aureus to persist within host cells. This study offers significant insights into the human cell response to S. aureus infection, illuminating the complex proteomic shifts that underlie the defense mechanisms of macrophages and keratinocytes. Notably, the study underscores the nuanced interplay between the host's metabolic reprogramming and immune strategy, suggesting potential therapeutic targets for enhancing host defense and inhibiting bacterial survival. The findings enhance our understanding of host-pathogen interactions and can inform the development of targeted therapies against S. aureus infections.
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Affiliation(s)
- Stephen Dela Ahator
- Centre for New Antibacterial Strategies (CANS) & Research Group for Host-Microbe Interactions, Department of Medical Biology, Faculty of Health Sciences, UiT–The Arctic University of Norway, Tromsø, Norway
| | - Kristin Hegstad
- Centre for New Antibacterial Strategies (CANS) & Research Group for Host-Microbe Interactions, Department of Medical Biology, Faculty of Health Sciences, UiT–The Arctic University of Norway, Tromsø, Norway
- Norwegian National Advisory Unit on Detection of Antimicrobial Resistance, Department of Microbiology and Infection Control, University Hospital of North Norway, Tromsø, Norway
| | - Christian S. Lentz
- Centre for New Antibacterial Strategies (CANS) & Research Group for Host-Microbe Interactions, Department of Medical Biology, Faculty of Health Sciences, UiT–The Arctic University of Norway, Tromsø, Norway
| | - Mona Johannessen
- Centre for New Antibacterial Strategies (CANS) & Research Group for Host-Microbe Interactions, Department of Medical Biology, Faculty of Health Sciences, UiT–The Arctic University of Norway, Tromsø, Norway
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Michal Š, Helena L, Táňa Z, Kristýna V, Jiří K, Pavel R. Gene expression profiles and protein-protein interaction networks in THP-1 cells exposed to metal-based nanomaterials. Environ Toxicol Pharmacol 2024:104469. [PMID: 38759848 DOI: 10.1016/j.etap.2024.104469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 04/24/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
We analyzed gene expression in THP-1 cells exposed to metal-based nanomaterials (NMs) [TiO2 (NM-100), ZnO (NM-110), SiO2 (NM-200), Ag (NM-300 K)]. A functional enrichment analysis of the significant differentially expressed genes (DEGs) identified the key modulated biological processes and pathways. DEGs were used to construct protein-protein interaction networks. NM-110 and NM-300 K induced changes in the expression of genes involved in oxidative and genotoxic stress, immune response, alterations of cell cycle, detoxification of metal ions and regulation of redox-sensitive pathways. Both NMs shared a number of highly connected protein nodes (hubs) including CXCL8, ATF3, HMOX1, and IL1B. NM-200 induced limited transcriptional changes, mostly related to the immune response; however, several hubs (CXCL8, ATF3) were identical with NM-110 and NM-300 K. No effects of NM-100 were observed. Overall, soluble nanomaterials NM-110 and NM-300 K exerted a wide variety of toxic effects, while insoluble NM-200 induced immunotoxicity; NM-100 caused no detectable changes on the gene expression level.
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Affiliation(s)
- Šíma Michal
- Department of Toxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Prague, Czech Republic
| | - Líbalová Helena
- Department of Toxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Prague, Czech Republic
| | - Závodná Táňa
- Department of Toxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Prague, Czech Republic
| | - Vrbová Kristýna
- Department of Toxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Prague, Czech Republic
| | - Kléma Jiří
- Department of Computer Science, Czech Technical University in Prague, Prague, Czech Republic
| | - Rössner Pavel
- Department of Toxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Prague, Czech Republic.
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3
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Boero E, Carducci M, Keeley AJ, Berlanda Scorza F, Iturriza-Gómara M, Moriel DG, Rossi O. A flow cytometry-based assay to determine the ability of anti-Streptococcus pyogenes antibodies to mediate monocytic phagocytosis in human sera. J Immunol Methods 2024; 528:113652. [PMID: 38458312 DOI: 10.1016/j.jim.2024.113652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/20/2024] [Accepted: 02/27/2024] [Indexed: 03/10/2024]
Abstract
Streptococcus pyogenes, commonly referred to as Group A Streptococcus (Strep A), causes a spectrum of diseases, with the potential to progress into life-threatening illnesses and autoimmune complications. The escalating threat of antimicrobial resistance, stemming from the prevalent reliance on antibiotic therapies to manage Strep A infections, underscores the critical need for the development of disease control strategies centred around vaccination. Phagocytes play a critical role in controlling Strep A infections, and phagocytosis-replicating assays are essential for vaccine development. Traditionally, such assays have employed whole-blood killing or opsonophagocytic methods using HL-60 cells as neutrophil surrogates. However, assays mimicking Fcγ receptors- phagocytosis in clinical contexts are lacking. Therefore, here we introduce a flow cytometry-based method employing undifferentiated THP-1 cells as monocytic/macrophage model to swiftly evaluate the ability of human sera to induce phagocytosis of Strep A. We extensively characterize the assay's precision, linearity, and quantification limit, ensuring robustness. By testing human pooled serum, the assay proved to be suitable for the comparison of human sera's phagocytic capability against Strep A. This method offers a valuable complementary assay for clinical studies, addressing the gap in assessing FcγR-mediated phagocytosis. By facilitating efficient evaluation of Strep A -phagocyte interactions, it may contribute to elucidating the mechanisms required for the prevention of infections and inform the development of future vaccines and therapeutic advancements against Strep A infections.
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Affiliation(s)
- Elena Boero
- GSK Vaccines Institute for Global Health (GVGH), Via Fiorentina 1, 53100 Siena, Italy.
| | - Martina Carducci
- GSK Vaccines Institute for Global Health (GVGH), Via Fiorentina 1, 53100 Siena, Italy
| | - Alexander J Keeley
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield S10 2TN, UK; Vaccines and Immunity Theme, Medical Research Unit the Gambia at the London School of Hygiene and Tropical Medicine, Atlantic Boulevard, Fajara, P. O. Box 273, the Gambia
| | | | - Miren Iturriza-Gómara
- GSK Vaccines Institute for Global Health (GVGH), Via Fiorentina 1, 53100 Siena, Italy
| | - Danilo Gomes Moriel
- GSK Vaccines Institute for Global Health (GVGH), Via Fiorentina 1, 53100 Siena, Italy
| | - Omar Rossi
- GSK Vaccines Institute for Global Health (GVGH), Via Fiorentina 1, 53100 Siena, Italy
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Hybiske K, Paktinat S, Newman K, Patton D, Khosropour C, Roxby AC, Mugo NR, Oluoch L, Ngure K, Suchland R, Hladik F, Vojtech L. Antibodies from chlamydia-infected individuals facilitate phagocytosis via Fc receptors. Infect Immun 2024; 92:e0050323. [PMID: 38451079 PMCID: PMC11003224 DOI: 10.1128/iai.00503-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/16/2024] [Indexed: 03/08/2024] Open
Abstract
Non-neutralizing functions of antibodies, including phagocytosis, may play a role in Chlamydia trachomatis (CT) infection, but these functions have not been studied and assays are lacking. We utilized a flow-cytometry-based assay to determine whether serum samples from a well-characterized cohort of CT-infected and naïve control individuals enhanced phagocytosis via Fc-receptor-expressing THP-1 cells, and whether this activity correlated with antibody titers. Fc-receptor-mediated phagocytosis was detected only in CT+ donors. Phagocytosis generally did not correlate well with antibody titer. In addition, we found that complement from both CT+ and negative individuals enhanced phagocytosis of CT into primary neutrophils. These results suggest that anti-CT antibodies can have functions that are not reflected by titer. This method could be used to quantitively measure Fc-receptor-mediated function of anti-CT antibodies or complement activity and could reveal new immune correlates of protection.
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Affiliation(s)
- Kevin Hybiske
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Shahrokh Paktinat
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, USA
| | - Katherine Newman
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Dorothy Patton
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, USA
| | | | - Alison C. Roxby
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Nelly R. Mugo
- Department of Global Health, University of Washington, Seattle, Washington, USA
- Centre for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Lynda Oluoch
- Centre for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Kenneth Ngure
- Department of Global Health, University of Washington, Seattle, Washington, USA
- School of Public Health, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Robert Suchland
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Florian Hladik
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Lucia Vojtech
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, USA
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Protić-Rosić I, Lopandić Z, Popović D, Blagojević G, Gavrović-Jankulović M. rBet v 1a-BanLec wt induce upregulation of IL-10 and IFN-γ gene expression in Caco-2/THP-1 co-culture and secretion of IL-10 and IFN-γ/IL-4 levels in PBMCs of birch pollen allergic donors. Int Immunopharmacol 2024; 129:111607. [PMID: 38330798 DOI: 10.1016/j.intimp.2024.111607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/19/2024] [Accepted: 01/25/2024] [Indexed: 02/10/2024]
Abstract
Novel allergen immunotherapy (AIT) approaches necessitate the use of more effective and safe therapeutics, which can be accomplished by employing novel adjuvants for improved innate immune cell activation, as well as hypoallergenic allergen forms. In this study, we investigate the immunomodulatory effects of a chimera rBet v 1a-BanLecwt (rBv1a-BLwt; Cwt) composed of the major birch pollen allergen Bet v 1a and banana lectin (BanLecwt; BLwt) and two novel chimeras, rBv1l-BLH84T (rBet v 1l-BanLecH84T; C1) and rBLH84T-Bv1l (rBanLecH84T-Bet v 1l; C2), both composed of BLH84T and hypoallergenic birch pollen allergen Bv1l in the co-culture model Caco-2/THP-1, and PBMCs from donors with birch pollen allergy. The chimeric molecules rBv1l-BLH84T (C1) and rBLH84T-Bv1l (C2) were created in silico and then produced in E. coli using recombinant DNA technology. Real-time PCR analysis of gene expression following compound treatment in the co-culture model revealed that all three chimeras have the potential to induce the anti-inflammatory cytokine IL-10 gene expression in Caco-2 cells and IFN-γ gene expression in THP-1 cells. Sandwich ELISA revealed that Cwt increased IL-10 secretion and IFN-/IL-4 levels in PBMCs from birch pollen allergic donors, whereas C1 and C2 were less effective. The findings suggest that Cwt should be analyzed further due to its potential benefit in AIT.
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Affiliation(s)
| | - Zorana Lopandić
- Institute for Chemistry in Medicine, University of Belgrade, Faculty of Medicine, Belgrade, Serbia.
| | - Dragan Popović
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia.
| | - Gordan Blagojević
- Institute of Virology, Vaccines and Sera "Torlak", Belgrade, Serbia.
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Liu R, Klück V, Kischkel B, Tercan H, Netea MG, Crişan TO, Joosten LAB. Soluble urate-induced effects on cytokine production in vitro - Assessment of methodologies and cell types. Cytokine 2024; 175:156502. [PMID: 38237388 DOI: 10.1016/j.cyto.2024.156502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 12/30/2023] [Accepted: 01/04/2024] [Indexed: 01/29/2024]
Abstract
BACKGROUND Hyperuricemia has been shown to be an inducer of pro-inflammatory mediators by human primary monocytes. To study the deleterious effects of hyperuricemia, a reliable and stable in vitro model using soluble urate is needed. One recent report showed different urate-dissolving methods resulted in either pro-inflammatory or anti-inflammatory properties. The aim of this study was to compare the effect of two methods of dissolving urate on both primary human peripheral blood mononuclear cells (PBMCs) and THP-1 cells. The two methods tested were 'pre-warming' and 'dissolving with NaOH'. METHODS Primary human PBMCs and THP-1 cells were exposed to urate solutions, prepared using the two methodologies: pre-warming and dissolving with NaOH. Afterwards, cells were stimulated with various stimuli, followed by the measurement of the inflammatory mediators IL-1β, IL-6, IL-1Ra, TNF, IL-8, and MCP-1. RESULTS In PBMCs, we observed an overall pro-inflammatory effect of urate, both in the pre-warming and the NaOH dissolving method. A similar pro-inflammatory effect was seen in THP-1 cells for both dissolving methods after restimulation. However, THP-1 cells exhibited pro-inflammatory profile with exposure to urate alone without restimulation. We did not find MSU crystals in our cellular assays. CONCLUSIONS Overall, the urate dissolving methods do not have critical impact on its inflammatory properties. Soluble urate prepared using either of the two methods showed mostly pro-inflammatory effects on human primary PBMCs and monocytic cell line THP-1. However, human primary PBMCs and the THP-1 differ in their response to soluble urate without restimulation.
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Affiliation(s)
- Ruiqi Liu
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Viola Klück
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Brenda Kischkel
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Helin Tercan
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mihai G Netea
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Immunology and Metabolism, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Tania O Crişan
- Department of Medical Genetics, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Leo A B Joosten
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Medical Genetics, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
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7
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Becker L, Holtmann D. Anti-inflammatory effects of α-humulene on the release of pro-inflammatory cytokines in lipopolysaccharide-induced THP-1 cells. Cell Biochem Biophys 2024:10.1007/s12013-024-01235-7. [PMID: 38388989 DOI: 10.1007/s12013-024-01235-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
While acute inflammation is an essential physical response to harmful external influences, the transition to chronic inflammation is problematic and associated with the development and worsening of many deadly diseases. Until now, established pharmaceutical agents have had many side effects when used for long periods. In this study, a possible anti-inflammatory effect of the sesquiterpene α-humulene on lipopolysaccharide (LPS) induction was tested. Herein, human THP-1-derived macrophages were used and their pro-inflammatory interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and interleukin-1β (IL-1β) cytokine release was measured by means of enzyme-linked immunosorbent assay. A dose-dependent effect of α-humulene on IL-6 release was observed at 0.5 and 100 µM α-humulene, with a maximum IL-6 inhibition of 60% compared to the LPS reference value after the addition of 100 µM α-humulene. TNF-α as well as IL-1β cytokine concentrations were not reduced by the addition of 0.5 and 100 µM α-humulene. This study suggests that α-humulene has potential as a promising natural alternative to established pharmaceuticals for the treatment of elevated IL-6 levels and chronic inflammation in humans.
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Affiliation(s)
- Lucas Becker
- Bioprocess Intensification, Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, Wiesenstrasse 14, 35390, Giessen, Germany
| | - Dirk Holtmann
- Bioprocess Intensification, Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, Wiesenstrasse 14, 35390, Giessen, Germany.
- Institute of Process Engineering in Life Sciences, Karlsruhe Institute of Technology, Fritz-Haber-Weg 4, 76131, Karlsruhe, Germany.
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Arsenault R, Marshall S, Salois P, Li Q, Zhang W. sTREM2 Differentially Affects Cytokine Expression in Myeloid-Derived Cell Models via MAPK-JNK Signaling Pathway. Biology (Basel) 2024; 13:87. [PMID: 38392305 PMCID: PMC10886855 DOI: 10.3390/biology13020087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/15/2024] [Accepted: 01/27/2024] [Indexed: 02/24/2024]
Abstract
TREM2 is a critical innate immune receptor primarily expressed on myeloid-derived cells, such as microglia and macrophages. Mutations in TREM2 are linked to several neurodegenerative diseases including Alzheimer's disease (AD). TREM2 can be cleaved from the cell membrane and released as soluble TREM2 (sTREM2). sTREM2 levels are shown to peak prior to AD, with its levels fluctuating throughout disease progression. However, the mechanism by which sTREM2 may affect innate immune responses is largely uncharacterized. In this study, we investigated whether sTREM2 can induce inflammatory response in myeloid-derived THP-1 monocytes and macrophages and characterized the signaling mechanisms involved. Our results show that sTREM2 was capable of stimulating the expression of several inflammatory cytokines in THP-1 cells throughout the time course of 2 h to 8 h but inducing anti-inflammatory cytokine expression at later time points. A TREM2 antibody was capable of inhibiting the expression of some cytokines induced by sTREM2 but enhancing others. The complex of sTREM2/TREM2 antibody was shown to enhance IL-1β expression, which was partially blocked by an NLRP3 specific inhibitor, indicating that the complex activated the NRLP3 inflammasome pathway. sTREM2 was also shown to have differential effects on cytokine expression in M0, M1, and M2 macrophages differentiated from THP-1 cells. sTREM2 has a more stimulating effect on cytokine expression in M0 macrophages, less of an effect on M2 macrophages, and some inhibitory effects on cytokine expression in M1 macrophages at early time points. Analyses of several signaling pathways revealed that sTREM2-induced expression of cytokines occurs mainly through MAPK-JNK signaling. Our work reveals differential effects of sTREM2 on cytokine expression profiles of THP-1 cells and macrophages and demonstrates that the MAPK-JNK signaling pathway is mainly responsible for sTREM2-induced cytokine expression.
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Affiliation(s)
- Ryan Arsenault
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Steven Marshall
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Patrick Salois
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada
| | - Qiao Li
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Wandong Zhang
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
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Carneiro FM, da Cruz AB, Maia MM, Taniwaki NN, Pereira IDS, Namiyama GM, Gava R, Hiramoto RM, Vicente B, Midlej V, Mariante RM, Pereira-Chioccola VL. Extracellular Vesicles from Leishmania (Leishmania) infantum Contribute in Stimulating Immune Response and Immunosuppression in Hosts with Visceral Leishmaniasis. Microorganisms 2024; 12:270. [PMID: 38399674 PMCID: PMC10892469 DOI: 10.3390/microorganisms12020270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/11/2024] [Accepted: 01/19/2024] [Indexed: 02/25/2024] Open
Abstract
Visceral leishmaniasis (VL) is a chronic systemic disease. In Brazil this infection is caused by Leishmania (Leishmania) infantum. Extracellular vesicles (EVs) released by Leishmania species have different functions like the modulation of host immune systems and inflammatory responses, among others. This study evaluated the participation of EVs from L. (L.) infantum (Leish-EVs) in recognition of the humoral and cellular immune response of hosts with VL. Promastigotes were cultivated in 199 medium and, in the log phase of growth, they were centrifuged, washed, resus-pended in RPMI medium, and incubated for 2 to 24 h, at 25 °C or 37 °C to release Leish-EVs. This dynamic was evaluated using transmission (TEM) and scanning (SEM) electron microscopies, as well as nanoparticle tracking analysis (NTA). The results suggested that parasite penetration in mammal macrophages requires more Leish-EVs than those living in insect vectors, since promastigotes incubated at 37 °C released more Leish-EVs than those incubated at 25 °C. Infected THP-1 cells produced high EV concentration (THP-1 cells-EVs) when compared with those from the control group. The same results were obtained when THP-1 cells were treated with Leish-EVs or a crude Leishmania antigen. These data indicated that host-EV concentrations could be used to distinguish infected from uninfected hosts. THP-1 cells treated with Leish-EVs expressed more IL-12 than control THP-1 cells, but were unable to express IFN-γ. These same cells highly expressed IL-10, which inhibited TNF-α and IL-6. Equally, THP-1 cells treated with Leish-EVs up-expressed miR-21-5p and miR-146a-5p. In conclusion, THP-1 cells treated with Leish-EVs highly expressed miR-21-5p and miR-146a-5p and caused the dysregulation of IL-10. Indirectly, these results suggest that high expression of these miRNAs species is caused by Leish-EVs. Consequently, this molecular via can contribute to immunosuppression causing enhanced immunopathology in infected hosts.
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Affiliation(s)
- Francieli Marinho Carneiro
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Allecineia Bispo da Cruz
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Marta Marques Maia
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Noemi Nosomi Taniwaki
- Núcleo de Microscopia Eletrônica, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (N.N.T.); (G.M.N.)
| | - Ingrid de Siqueira Pereira
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
- Núcleo de Microscopia Eletrônica, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (N.N.T.); (G.M.N.)
| | - Gislene Mitsue Namiyama
- Núcleo de Microscopia Eletrônica, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (N.N.T.); (G.M.N.)
| | - Ricardo Gava
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Roberto Mitsuyoshi Hiramoto
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Bruno Vicente
- Laboratório de Biologia Estrutural, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (B.V.); (V.M.); (R.M.M.)
| | - Victor Midlej
- Laboratório de Biologia Estrutural, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (B.V.); (V.M.); (R.M.M.)
| | - Rafael Meyer Mariante
- Laboratório de Biologia Estrutural, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (B.V.); (V.M.); (R.M.M.)
| | - Vera Lucia Pereira-Chioccola
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
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10
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Fonseca S, Carvalho AL, Miquel-Clopés A, Jones EJ, Juodeikis R, Stentz R, Carding SR. Corrigendum: Extracellular vesicles produced by the human gut commensal bacterium Bacteroides thetaiotaomicron elicit anti-inflammatory responses from innate immune cells. Front Microbiol 2024; 14:1353539. [PMID: 38235433 PMCID: PMC10794089 DOI: 10.3389/fmicb.2023.1353539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 01/19/2024] Open
Abstract
[This corrects the article DOI: 10.3389/fmicb.2022.1050271.].
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Affiliation(s)
- Sonia Fonseca
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Ana L. Carvalho
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | | | - Emily J. Jones
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Rokas Juodeikis
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Régis Stentz
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Simon R. Carding
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom
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11
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Su Z, Luo M, Chen ZL, Lan H. Comparison of the Ways in Which Nitidine Chloride and Bufalin Induce Programmed Cell Death in Hematological Tumor Cells. Appl Biochem Biotechnol 2023; 195:7755-7765. [PMID: 37086379 PMCID: PMC10754759 DOI: 10.1007/s12010-023-04468-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2023] [Indexed: 04/23/2023]
Abstract
The objective of this work to study the programmed cell death (PCD) in hematological tumor cells induced by nitidine chloride (NC) and bufalin (BF). Hematological tumor cells were exposed to various doses of NC and BF to measure the level of growth inhibition. While inverted microscope is used to observe cell morphology, western blot technique is used to detect apoptosis-related protein expression levels. The effects of NC and BF on hematological tumor cells were different. Although abnormal cell morphology could be seen under the inverted microscope, the western blot results showed that the two medicines induced PCD through different pathways. Drug resistance varied in intensity across distinct cells. THP-1, Jurkat, and RPMI-8226 each had half maximum inhibitory concentrations (IC50) of 36.23 nM, 26.71 nM, and 40.46 nM in BF, and 9.24 µM, 4.33 µM, and 28.18 µM in NC, respectively. Different hematopoietic malignancy cells exhibit varying degrees of drug resistance, and the mechanisms by which apoptosis of hematologic tumor cells is triggered by NC and BF are also distinct.
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Affiliation(s)
- Zejie Su
- Department of Pharmacy, Shunde Hospital of Guangzhou University of Chinese traditional Medicine, Shunde, People's Republic of China
| | - Man Luo
- Department of Hemalology, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
| | - Zhi Lian Chen
- Department of Hemalology, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
| | - Hai Lan
- Department of Pharmacy, Shunde Hospital of Guangzhou University of Chinese traditional Medicine, Shunde, People's Republic of China.
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12
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Scheurlen KM, Snook DL, Littlefield AB, George JB, Parks MA, Beal RJ, MacLeod A, Riggs DW, Gaskins JT, Chariker J, Rouchka EC, Galandiuk S. Anti-inflammatory mechanisms in cancer research: Characterization of a distinct M2-like macrophage model derived from the THP-1 cell line. Cancer Med 2023; 12:21172-21187. [PMID: 38037545 PMCID: PMC10726891 DOI: 10.1002/cam4.6681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 10/12/2023] [Accepted: 10/25/2023] [Indexed: 12/02/2023] Open
Abstract
AIMS Macrophages play an essential role in cancer development. Tumor-associated macrophages (TAMs) have predominantly M2-like attributes that are associated with tumor progression and poor patient survival. Numerous methods have been reported for differentiating and polarizing macrophages in vitro, but there is no standardized and validated model for creating TAMs. Primary cells show varying cytokine responses depending on their origin and functional studies utilizing these cells may lack generalization and validity. A distinct cell line-derived TAM-like M2 subtype is required to investigate the mechanisms mediated by anti-inflammatory TAMs in vitro. Our previous work demonstrated a standardized protocol for creating an M2 subtype derived from a human THP-1 cell line. The cell expression profile, however, has not been validated. The aim of this study was to characterize and validate the TAM-like M2 subtype macrophage created based on our protocol to introduce them as a standardized model for cancer research. METHODS AND RESULTS Using qRT-PCR and ELISA, we demonstrated that proinflammatory, anti-inflammatory, and tumor-associated marker expression changed during THP-1-derived marcrophage development in vitro, mimicking a TAM-related profile (e.g., TNFα, IL-1β). The anti-inflammatory marker IL-8/CXCL8, however, is most highly expressed in young M0 macrophages. Flow cytometry showed increased expression of CD206 in the final TAM-like M2 macrophage. Single-cell RNA-sequencing analysis of primary human monocytes and colon cancer tissue macrophages demonstrated that cell line-derived M2 macrophages resembled a TAM-related gene profile. CONCLUSIONS The THP-1-derived M2 macrophage based on a standardized cell line model represents a distinct anti-inflammatory TAM-like phenotype with an M2a subtype profile. This model may provide a basis for in vitro investigation of functional mechanisms in a variety of anti-inflammatory settings, particularly colon cancer development.
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Affiliation(s)
- Katharina M Scheurlen
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Dylan L Snook
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Andrew B Littlefield
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Joan B George
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Mary A Parks
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Robert J Beal
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Anne MacLeod
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Daniel W Riggs
- Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Jeremy T Gaskins
- Department of Bioinformatics & Biostatistics, University of Louisville, Louisville, Kentucky, USA
| | - Julia Chariker
- Kentucky IDeA Networks of Biomedical Research Excellence (KY INBRE), Bioinformatics Core, University of Louisville, Louisville, Kentucky, USA
| | - Eric C Rouchka
- Kentucky IDeA Networks of Biomedical Research Excellence (KY INBRE), Bioinformatics Core, University of Louisville, Louisville, Kentucky, USA
| | - Susan Galandiuk
- Digestive Surgery Research Laboratory, Price Institute of Surgical Research, The Hiram C. Polk, Jr, MD Department of Surgery, University of Louisville School of Medicine, Louisville, Kentucky, USA
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13
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Arbildi P, Calvo F, Macías V, Rodríguez-Camejo C, Sóñora C, Hernández A. Study of tissue transglutaminase spliced variants expressed in THP-1 derived macrophages exhibiting distinct functional phenotypes. Immunobiology 2023; 228:152752. [PMID: 37813017 DOI: 10.1016/j.imbio.2023.152752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/21/2023] [Accepted: 09/30/2023] [Indexed: 10/11/2023]
Abstract
Tissue transglutaminase (TG2) expressed in monocytes and macrophage is known to participate in processes during either early and resolution stages of inflammation. The alternative splicing of tissue transglutaminase gene is a mechanism that increases its functional diversity. Four spliced variants are known with truncated C-terminal domains (TGM2_v2, TGM2_v3, TGM2_v4a, TGM2_v4b) but scarce information is available about its expression in human monocyte and macrophages. We studied the expression of canonical TG2 (TGM2_v1) and its short spliced variants by RT-PCR during differentiation of TPH-1 derived macrophages (dTHP-1) using two protocols (condition I and II) that differ in Phorbol-12-myristate-13-acetate dose and time schedule. The production of TNF-α and IL-1β in supernatant of dTHP-1, measured by ELISA in supernatants showed higher proinflammatory milieu in condition I. We found that the expression of all mRNA TG2 spliced variants were up-regulated during macrophage differentiation and after IFN-γ treatment of dTHP-1 cells in both conditions. Nevertheless, the relative fold increase or TGM2_v3 in relation with TGM2_v1 was higher only with the condition I. M1/M2-like THP-1 macrophages obtained with IFN-γ/IL-4 treatments showed that the up-regulation of TGM2_v1 induced by IL-4 was higher in relation with any short spliced variants. The qualitative profile of relative contribution of spliced variants in M1/M2-like THP-1 cells showed a trend to higher expression of TGM2_v3 in the inflammatory functional phenotype. Our results contribute to the knowledge about TG2 spliced variants in the biology of monocyte/macrophage cells and show how the differentiation conditions can alter their expression and cell function.
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Affiliation(s)
- Paula Arbildi
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay; Area Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Alfredo Navarro 3051, Montevideo 11600, Uruguay.
| | - Federico Calvo
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay; Area Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Alfredo Navarro 3051, Montevideo 11600, Uruguay
| | - Victoria Macías
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay; Area Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Alfredo Navarro 3051, Montevideo 11600, Uruguay
| | - Claudio Rodríguez-Camejo
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay; Area Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Alfredo Navarro 3051, Montevideo 11600, Uruguay.
| | - Cecilia Sóñora
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay; Area Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Alfredo Navarro 3051, Montevideo 11600, Uruguay; Escuela Universitaria de Tecnología Médica (EUTM), Facultad de Medicina, Universidad de la República, Alfredo Navarro S/N, Montevideo 11600, Uruguay.
| | - Ana Hernández
- Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay; Area Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Alfredo Navarro 3051, Montevideo 11600, Uruguay.
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14
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Höper T, Karkossa I, Dumit VI, von Bergen M, Schubert K, Haase A. A comparative proteomics analysis of four contact allergens in THP-1 cells shows distinct alterations in key metabolic pathways. Toxicol Appl Pharmacol 2023; 475:116650. [PMID: 37541627 DOI: 10.1016/j.taap.2023.116650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/21/2023] [Accepted: 07/31/2023] [Indexed: 08/06/2023]
Abstract
Allergic contact dermatitis (ACD) is the predominant form of immunotoxicity in humans. The sensitizing potential of chemicals can be assessed in vitro. However, a better mechanistic understanding could improve the current OECD-validated test battery. The aim of this study was to get insights into toxicity mechanisms of four contact allergens, p-benzoquinone (BQ), 2,4-dinitrochlorobenzene (DNCB), p-nitrobenzyl bromide (NBB) and NiSO4, by analyzing differential proteome alterations in THP-1 cells using two common proteomics workflows, stable isotope labeling by amino acids in cell culture (SILAC) and label-free quantification (LFQ). Here, SILAC was found to deliver more robust results. Overall, the four allergens induced similar responses in THP-1 cells, which underwent profound metabolic reprogramming, including a striking upregulation of the TCA cycle accompanied by pronounced induction of the Nrf2 oxidative stress response pathway. The magnitude of induction varied between the allergens with DNCB and NBB being most potent. A considerable overlap between transcriptome-based signatures of the GARD assay and the proteins identified in our study was found. When comparing the results of this study to a previous proteomics study in human primary monocyte-derived dendritic cells, we found a rather low share in regulated proteins. However, on pathway level, the overlap was high, indicating that affected pathways rather than single proteins are more eligible to investigate proteomic changes induced by contact allergens. Overall, this study confirms the potential of proteomics to obtain a profound mechanistic understanding, which may help improving existing in vitro assays for skin sensitization.
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Affiliation(s)
- Tessa Höper
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany; Department of Clinical Pharmacy and Biochemistry, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Isabel Karkossa
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Leipzig, Germany
| | - Verónica I Dumit
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Martin von Bergen
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Leipzig, Germany; Institute of Biochemistry, Leipzig University, Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Kristin Schubert
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Leipzig, Germany
| | - Andrea Haase
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany.
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15
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Wiener JP, Desire S, Garliyev V, Lyssenko III N, Praticò D, Lyssenko NN. Down-Regulation of ABCA7 in Human Microglia, Astrocyte and THP-1 Cell Lines by Cholesterol Depletion, IL-1β and TNFα, or PMA. Cells 2023; 12:2143. [PMID: 37681876 PMCID: PMC10486366 DOI: 10.3390/cells12172143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/04/2023] [Accepted: 08/18/2023] [Indexed: 09/09/2023] Open
Abstract
Adenosine triphosphate-binding cassette transporter subfamily A member 7 (ABCA7) is a major risk factor for Alzheimer's disease. Human neural cell lines were used to investigate the regulation of ABCA7 expression by cholesterol and pro-inflammatory cytokines. Cholesterol was depleted by methyl-β-cyclodextrin, followed by treatment with rosuvastatin to suppress de novo synthesis, while the cells underwent adjustment to low cholesterol. Cholesterol depletion by 50-76% decreased ABCA7 expression by ~40% in C20 microglia and ~21% in A172 astrocytes but had no effect on the protein in SK-N-SH neurons. Cholesterol depletion also suppressed ABCA7 in HMC3 microglia. Previously, cholesterol loss was reported to up-regulate ABCA7 in murine macrophages. ABCA7 was down-regulated during PMA-induced differentiation of human THP-1 monocytes to macrophages. But, cholesterol depletion in THP-1 macrophages by ~71% had no effect on ABCA7. IL-1β and TNFα reduced ABCA7 expression in C20 and HMC3 microglia but not in A172 astrocytes or SK-N-SH neurons. IL-6 did not affect ABCA7 in the neural cells. These findings suggest that ABCA7 is active in regular homeostasis in human neural cells, is regulated by cholesterol in a cell type-dependent manner, i.e., cholesterol depletion down-regulates it in human neuroglia but not neurons, and is incompatible with IL-1β and TNFα inflammatory responses in human microglia.
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Affiliation(s)
| | | | | | | | | | - Nicholas N. Lyssenko
- Alzheimer’s Center at Temple, Department of Neural Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
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Rossi I, Barollo S, Bertazza L, Mondin A, Pedron MC, Marodin G, Lupo MG, Palumbo M, Adorni MP, Mian C, Pezzani R, Ferri N. Effects of Handroanthus impetiginosus (Mart. ex DC.) Mattos extract on inflammatory, immune, atherogenic profile and differentiation in THP-1 cell line. Nat Prod Res 2023:1-6. [PMID: 37548308 DOI: 10.1080/14786419.2023.2244125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Handroanthus impetiginosus (Mart. ex DC.) Mattos is a plant from Central-South America that possesses different pharmacological activities. Plant extract was tested in THP-1 cell model, a human cell line used to study monocyte/macrophage functions. First, the plant effects on cell viability were evaluated, demonstrating no harmful consequences even at the higher concentrations (200 µg/ml). Thus, anti-inflammatory activity was investigated in gene and protein expression by RT-qPCR and ELISA methods, resulting in a reduction of pro-inflammatory cytokines after Handroanthus impetiginosus treatment. Similarly, NF-kB nuclear translocation was decreased according to confocal images and ImageStream X -analysis. Subsequently, in macrophage differentiated THP-1, CD36 mRNA and protein expression was inhibited in a concentration-dependent manner together with cell morphology changes during treatment. In addition, modified LDL-derived cholesterol uptake by THP-1 cells was reduced after plant extract incubation. Handroanthus impetiginosus showed anti-inflammatory and immunomodulating properties that may pave the way for future characterization in higher models.
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Affiliation(s)
- Ilaria Rossi
- Department of Pharmaceutical and Pharmacological Sciences (DSF), University of Padova, Padova, Italy
| | - Susi Barollo
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Loris Bertazza
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Alberto Mondin
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Maria Chiara Pedron
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Giorgia Marodin
- Department of Pharmaceutical and Pharmacological Sciences (DSF), University of Padova, Padova, Italy
| | - Maria Giovanna Lupo
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | | | - Maria Pia Adorni
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Caterina Mian
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Raffaele Pezzani
- Phytotherapy Lab, Department of Medicine (DIMED), University of Padova, Padova, Italy
- AIROB, Associazione Italiana per la Ricerca Oncologica di Base, Padova, Italy
| | - Nicola Ferri
- Endocrinology Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
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17
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Thornton JM, Padovani CM, Rodriguez A, Spur BW, Yin K. Lipoxin A 4 promotes antibiotic and monocyte bacterial killing in established Pseudomonas aeruginosa biofilm formed under hydrodynamic conditions. FASEB J 2023; 37:e23098. [PMID: 37462621 PMCID: PMC10694838 DOI: 10.1096/fj.202300619r] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/30/2023] [Accepted: 07/05/2023] [Indexed: 07/21/2023]
Abstract
Pseudomonas aeruginosa is a gram-negative, opportunistic bacteria commonly found in wounds and in lungs of immunocompromised patients. These bacteria commonly form biofilms which encapsulate the bacteria, making it difficult for antibiotics or immune cells to reach the bacterial cells. We previously reported that Lipoxin A4 (LxA4 ), a Specialized Pro-resolving Mediator, has direct effects on P. aeruginosa where it reduced biofilm formation and promoted ciprofloxacin antibiotic efficacy in a static biofilm-forming system. In the current studies, we examined the actions of LxA4 on established biofilms formed in a biofilm reactor under dynamic conditions with constant flow and shear stress. These conditions allow for biofilm growth with nutrient replenishment and for examination of bacteria within the biofilm structure. We show that LxA4 helped ciprofloxacin reduction of live/dead ratio of bacteria within the biofilm. THP-1 monocytes interacted with the biofilm to increase the number of viable bacteria within the biofilm as well as TNF-α production in the biofilm milieu, suggesting that monocyte interaction with bacterial biofilm exacerbates the inflammatory state. Pre-treatment of the THP-1 monocytes with LxA4 abolished the increase in biofilm bacteria and reduced TNF-α production. The effect of decreased biofilm bacteria was associated with increased LxA4 -induced monocyte adherence to biofilm but not increased bacteria killing suggesting that the mechanism for the reduced biofilm bacteria was due to LxA4 -mediated increase in adherence to biofilm. These results suggest that LxA4 can help antibiotic efficacy and promote monocyte activity against established P. aeruginosa biofilm formed under hydrodynamic conditions.
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Affiliation(s)
- Julianne M. Thornton
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Osteopathic Medicine Stratford, NJ, USA 08084
| | - Cristina M. Padovani
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Osteopathic Medicine Stratford, NJ, USA 08084
| | - Ana Rodriguez
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Osteopathic Medicine Stratford, NJ, USA 08084
| | - Bernd W. Spur
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Osteopathic Medicine Stratford, NJ, USA 08084
| | - Kingsley Yin
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Osteopathic Medicine Stratford, NJ, USA 08084
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18
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Bhengu KN, Singh R, Naidoo P, Mpaka-Mbatha MN, Nembe-Mafa N, Mkhize-Kwitshana ZL. Cytokine Responses during Mycobacterium tuberculosis H37Rv and Ascaris lumbricoides Costimulation Using Human THP-1 and Jurkat Cells, and a Pilot Human Tuberculosis and Helminth Coinfection Study. Microorganisms 2023; 11:1846. [PMID: 37513018 PMCID: PMC10384037 DOI: 10.3390/microorganisms11071846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/09/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Helminth infections are widespread in tuberculosis-endemic areas and are associated with an increased risk of active tuberculosis. In contrast to the pro-inflammatory Th1 responses elicited by Mycobacterium tuberculosis (Mtb) infection, helminth infections induce anti-inflammatory Th2/Treg responses. A robust Th2 response has been linked to reduced tuberculosis protection. Several studies show the effect of helminth infection on BCG vaccination and TB, but the mechanisms remain unclear. AIM To determine the cytokine response profiles during tuberculosis and intestinal helminth coinfection. METHODS For the in vitro study, lymphocytic Jurkat and monocytic THP-1 cell lines were stimulated with Mtb H37Rv and Ascaris lumbricoides (A. lumbricoides) excretory-secretory protein extracts for 24 and 48 h. The pilot human ex vivo study consisted of participants infected with Mtb, helminths, or coinfected with both Mtb and helminths. Thereafter, the gene transcription levels of IFN-γ, TNF-α, granzyme B, perforin, IL-2, IL-17, NFATC2, Eomesodermin, IL-4, IL-5, IL-10, TGF-β and FoxP3 in the unstimulated/uninfected controls, singly stimulated/infected and costimulated/coinfected groups were determined using RT-qPCR. RESULTS TB-stimulated Jurkat cells had significantly higher levels of IFN-γ, TNF-α, granzyme B, and perforin compared to unstimulated controls, LPS- and A. lumbricoides-stimulated cells, and A. lumbricoides plus TB-costimulated cells (p < 0.0001). IL-2, IL-17, Eomes, and NFATC2 levels were also higher in TB-stimulated Jurkat cells (p < 0.0001). Jurkat and THP-1 cells singly stimulated with TB had lower IL-5 and IL-4 levels compared to those singly stimulated with A. lumbricoides and those costimulated with TB plus A. lumbricoides (p < 0.0001). A. lumbricoides-singly stimulated cells had higher IL-4 levels compared to TB plus A. lumbricoides-costimulated Jurkat and THP-1 cells (p < 0.0001). TGF-β levels were also lower in TB-singly stimulated cells compared to TB plus A. lumbricoides-costimulated cells (p < 0.0001). IL-10 levels were lower in TB-stimulated Jurkat and THP-1 cells compared to TB plus A. lumbricoides-costimulated cells (p < 0.0001). Similar results were noted for the human ex vivo study, albeit with a smaller sample size. CONCLUSIONS Data suggest that helminths induce a predominant Th2/Treg response which may downregulate critical Th1 responses that are crucial for tuberculosis protection.
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Affiliation(s)
- Khethiwe N Bhengu
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban 4001, South Africa
- Division of Research Capacity Development, South African Medical Research Council (SAMRC), Cape Town 7505, South Africa
- Department of Biomedical Sciences, Faculty of Natural Sciences, Mangosuthu University of Technology, Umlazi, Durban 4031, South Africa
| | - Ravesh Singh
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, Howard College, University of KwaZulu-Natal, Durban 4041, South Africa
| | - Pragalathan Naidoo
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban 4001, South Africa
- Division of Research Capacity Development, South African Medical Research Council (SAMRC), Cape Town 7505, South Africa
| | - Miranda N Mpaka-Mbatha
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban 4001, South Africa
- Division of Research Capacity Development, South African Medical Research Council (SAMRC), Cape Town 7505, South Africa
- Department of Biomedical Sciences, Faculty of Natural Sciences, Mangosuthu University of Technology, Umlazi, Durban 4031, South Africa
| | - Nomzamo Nembe-Mafa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban 4001, South Africa
- Division of Research Capacity Development, South African Medical Research Council (SAMRC), Cape Town 7505, South Africa
| | - Zilungile L Mkhize-Kwitshana
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban 4001, South Africa
- Division of Research Capacity Development, South African Medical Research Council (SAMRC), Cape Town 7505, South Africa
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Gui L, Gu J. The study of the effect of HLA-B27 on THP-1 monocytic cells survival and its mechanism. Int J Rheum Dis 2023. [PMID: 37424166 DOI: 10.1111/1756-185x.14758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/11/2023] [Accepted: 05/17/2023] [Indexed: 07/11/2023]
Abstract
OBJECTIVE Previous studies have shown that human leukocyte antigen (HLA)-B27 induces the accumulation of unfolded proteins in the endoplasmic reticulum (ER) to cause ER stress, resulting in the unfold protein response (UPR), apoptosis and autophagy. However, it is still unknown whether it affects the survival of monocytes. In this study, we attempted to examine the effect of HLA-B27 gene knockout on the proliferation and apoptosis of THP-1 monocytic cell line and its potential mechanism. METHODS HLA-B27 gene knockout THP-1 cell line was constructed by lentivirus infection, and knockout efficiency was detected by immunofluorescence, quantitative reverse transcription - polymerase chain reaction (qRT-PCR) and western blot. Cell Counting Kit-8 (CCK-8) method and Annexin-V/PI double staining were used to detect the proliferation and apoptosis of the constructed THP-1 cell line, respectively. qRT-PCR was used to detect the effect of HLA-B27 inhibition on the expressions of ER molecular chaperone binding immunoglobulin protein (BiP) and genes about the UPR pathway. The proliferation rate of human BiP protein-stimulated THP-1 cells was detected by CCK-8 method. RESULTS HLA-B27 gene knockout THP-1 cells were successfully constructed by lentivirus infection. Knockout of HLA-B27 effectively promoted the proliferation of THP-1 cells and inhibited the apoptosis induced by cisplatin. qRT-PCR showed that BiP was synchronously increased, while activation of UPR pathway was inhibited. Stimulation with human BiP promoted the proliferation of THP-1 cells in a concentration-dependent manner. CONCLUSIONS HLA-B27 inhibition can promote the proliferation and inhibit the apoptosis of THP-1 cells. The inhibition function may be achieved through promotion of BiP and inhibition of UPR pathway activation.
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Affiliation(s)
- Lian Gui
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jieruo Gu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Villegas-Coronado D, Soto-Guzman JA, Martínez-Soto JM, Teran-Saavedra NG, Guzman-Partida AM, Vazquez-Moreno L, Villalba-Villalba AG, Maldonado A, Lagarda-Diaz I. Antiproliferative Potential of Olneya tesota PF2 Lectin in Human Acute Monocytic Leukemia Cells. Chem Biodivers 2023:e202300051. [PMID: 37358490 DOI: 10.1002/cbdv.202300051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/09/2023] [Indexed: 06/27/2023]
Abstract
Acute monocytic leukemia is a type of myeloid leukemia that develops in monocytes. The current clinical therapies for leukemia are unsatisfactory due to their side effects and nonspecificity toward target cells. Some lectins display antitumor activity and may specifically recognize cancer cells by binding to carbohydrate structures on their surface. Therefore, this study evaluated the response of the human monocytic leukemia cell lines THP-1 to the Olneya tesota PF2 lectin. The induction of apoptosis and reactive oxygen species production in PF2-treated cells was evaluated by flow cytometry, and the lectin-THP-1 cell interaction and mitochondrial membrane potential were evaluated by confocal fluorescence microscopy. PF2 genotoxicity was evaluated by DNA fragmentation analysis via gel electrophoresis. The results showed that PF2 binds to THP-1 cells, triggers apoptosis and DNA degradation, changes the mitochondrial membrane potential, and increases reactive oxygen species levels in PF2-treated THP-1 cells. These results suggest the potential use of PF2 for developing alternative anticancer treatments with enhanced specificity.
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Affiliation(s)
- Diana Villegas-Coronado
- Departamento de Investigaciones en Polímeros y Materiales, Universidad de Sonora, Hermosillo, Sonora, 83000, Mexico
| | | | | | | | | | - Luz Vazquez-Moreno
- Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, 83304, Mexico
| | - Ana Gloria Villalba-Villalba
- Investigadores por México CONAHCyT-UNISON, Departamento de Física, Universidad de Sonora, Hermosillo, 83000, Mexico
| | - Amir Maldonado
- Departamento de Física, Universidad de Sonora, Hermosillo, 83000, Mexico
| | - Irlanda Lagarda-Diaz
- Investigadores por México CONAHCyT-UNISON, Departamento de Física, Universidad de Sonora, Hermosillo, 83000, Mexico
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21
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Kim BY, Son Y, Kim BJ, Chung SW, Lee D, Eo SK, Kim K. Atheroma-Relevant 7-Oxysterols Differentially Upregulate Cd14 Expression. Int J Mol Sci 2023; 24:10542. [PMID: 37445719 DOI: 10.3390/ijms241310542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
The expression of CD14 in monocytic cells is elevated in atherosclerotic lesions where 7-oxyterols are abundant. However, it remains unknown whether atheroma-relevant 7-oxysterols are involved in receptor expression. Therefore, we investigated the effects of 7α-hydroxycholesterol (7αOHChol), 7β-hydroxycholesterol (7βOHChol), and 7-ketocholesterol (7K) on CD14 levels in THP-1 cells. The three 7-oxysterols increased CD14 transcript levels at a distinct time point, elevated cellular CD14 protein levels, and promoted the release of soluble CD (sCD14) from THP-1 cells. Our data revealed that CD14 expression was most strongly induced after treatment with 7αOHChol. Moreover, 7αOHChol alone upregulated membrane-bound CD14 levels and enhanced responses to lipopolysaccharides, as determined by CCL2 production and monocytic cell migration. The 7-oxysterols also increased the gelatinolytic activity of MMP-9, and a cell-permeable, reversible MMP-9 inhibitor, MMP-9 inhibitor I, significantly impaired sCD14 release. These results indicate that 7-oxysterols differentially induce CD14 expression in vascular cells and contribute to the monocytic cell expression of CD14 via overlapping, but distinct, mechanisms.
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Affiliation(s)
- Bo-Young Kim
- Department of Pharmacology, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Yonghae Son
- Department of Pharmacology, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Byoung Joon Kim
- Kim Byoung Joon Ledas Varicose Vein Clinic, Busanjin-gu, Busan 47256, Republic of Korea
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Pusan National University, Busan 49241, Republic of Korea
| | - Sung Woon Chung
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Pusan National University, Busan 49241, Republic of Korea
| | - Dongjun Lee
- Department of Convergence Medicine, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Seong-Kug Eo
- College of Veterinary Medicine and Bio-Safety Research Institute, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - Koanhoi Kim
- Department of Pharmacology, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
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Yang H, Espada CE, Phillips S, Martinez N, Kenney AD, Yount JS, Xiong Y, Wu L. The host anti-viral protein SAMHD1 suppresses NF-κB activation by interacting with the IKK complex during inflammatory responses and viral infection. J Biol Chem 2023; 299:104750. [PMID: 37100289 DOI: 10.1016/j.jbc.2023.104750] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 04/28/2023] Open
Abstract
Sterile alpha motif and histidine-aspartate (HD) domain-containing protein 1 (SAMHD1) inhibits HIV-1 replication in non-dividing cells by reducing the intracellular dNTP pool. SAMHD1 also suppresses NF-κB activation induced by inflammatory stimuli and viral infections. Specifically, SAMHD1-mediated reduction of NF-κB inhibitory protein (IκBα) phosphorylation is important for the suppression of NF-κB activation. However, while the inhibitors of NF-κB kinase subunit alpha and beta (IKKα and IKKβ) regulate IκBα phosphorylation, the mechanism by which SAMHD1 regulates phosphorylation of IκBα remains unclear. Here, we report that SAMHD1 suppresses phosphorylation of IKKα/β/γ via interaction with IKKα and IKKβ, thus inhibiting subsequent phosphorylation of IκBα in monocytic THP-1 cells and differentiated non-dividing THP-1 cells. We show that knockout of SAMHD1 enhanced phosphorylation of IKKα, IKKβ, and IKKγ in THP-1 cells treated with the NF-κB activator lipopolysaccharide (LPS) or infected with Sendai virus (SeV), and SAMHD1 reconstitution inhibited phosphorylation of IKKα/β/γ in SeV-infected THP-1 cells. We demonstrate that endogenous SAMHD1 interacted with IKKα and IKKβ in THP-1 cells and recombinant SAMHD1 bound to purified IKKα or IKKβ directly in vitro. Mapping of these protein interactions showed that the HD domain of SAMHD1 interacts with both IKKα and IKKβ and that the kinase domain of IKKα and the ubiquitin-like domain of IKKβ are required for their interactions with SAMHD1, respectively. Moreover, we found that SAMHD1 disrupts the interaction between upstream kinase TAK1 and IKKα or IKKβ. Our findings identify a new regulatory mechanism by which SAMHD1 inhibits phosphorylation of IκBα and NF-κB activation.
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23
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Casas-Rodríguez A, Cebadero-Dominguez Ó, Puerto M, Cameán AM, Jos A. Immunomodulatory Effects of Cylindrospermopsin in Human T Cells and Monocytes. Toxins (Basel) 2023; 15:toxins15040301. [PMID: 37104239 PMCID: PMC10146592 DOI: 10.3390/toxins15040301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 04/28/2023] Open
Abstract
Cylindrospermopsin (CYN) is a cyanotoxin with an increasing occurrence, and therefore it is important to elucidate its toxicity profile. CYN has been classified as a cytotoxin, although the scientific literature has already revealed that it affects a wide range of organs and systems. However, research on its potential immunotoxicity is still limited. Thus, this study aimed to evaluate the impact of CYN on two human cell lines representative of the immune system: THP-1 (monocytes) and Jurkat (lymphocytes). CYN reduced cell viability, leading to mean effective concentrations (EC50 24 h) of 6.00 ± 1.04 µM and 5.20 ± 1.20 µM for THP-1 and Jurkat cells, respectively, and induced cell death mainly by apoptosis in both experimental models. Moreover, CYN decreased the differentiation of monocytes to macrophages after 48 h of exposure. In addition, an up-regulation of the mRNA expression of different cytokines, such as interleukin (IL) 2, IL-8, tumor necrosis factor-alpha (TNF-α) and interferon-gamma (INF-γ), was also observed mainly after 24 h exposure in both cell lines. However, only an increase in TNF-α in THP-1 supernatants was observed by ELISA. Overall, these results suggest the immunomodulatory activity of CYN in vitro. Therefore, further research is required to evaluate the impact of CYN on the human immune system.
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Affiliation(s)
| | | | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
| | - Ana María Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
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Niora M, Lerche MH, Dufva M, Berg-Sørensen K. Quantitative Evaluation of the Cellular Uptake of Nanodiamonds by Monocytes and Macrophages. Small 2023; 19:e2205429. [PMID: 36638251 DOI: 10.1002/smll.202205429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Fluorescent nanodiamonds (FNDs) with negative nitrogen-vacancy (NV- ) defect centers are great probes for biosensing applications, with potential to act as biomarkers for cell differentiation. To explore this concept, uptake of FNDs (≈120 nm) by THP-1 monocytes and monocyte-derived M0-macrophages is studied. The time course analysis of FND uptake by monocytes confirms differing FND-cell interactions and a positive time-dependence. No effect on cell viability, proliferation, and differentiation potential into macrophages is observed, while cells saturated with FNDs, unload the FNDs completely by 25 cell divisions and subsequently take up a second dose effectively. FND uptake variations by THP-1 cells at early exposure-times indicate differing phagocytic capability. The cell fraction that exhibits relatively enhanced FND uptake is associated to a macrophage phenotype which derives from spontaneous monocyte differentiation. In accordance, chemical-differentiation of the THP-1 cells into M0-macrophages triggers increased and homogeneous FND uptake, depleting the fraction of cells that were non-responsive to FNDs. These observations imply that FND uptake allows for distinction between the two cell subtypes based on phagocytic capacity. Overall, FNDs demonstrate effective cell labeling of monocytes and macrophages, and are promising candidates for sensing biological processes that involve cell differentiation.
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Affiliation(s)
- Maria Niora
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, building 345C, 2800, Kgs. Lyngby, Denmark
| | - Mathilde Hauge Lerche
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, building 345C, 2800, Kgs. Lyngby, Denmark
| | - Martin Dufva
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, building 345C, 2800, Kgs. Lyngby, Denmark
| | - Kirstine Berg-Sørensen
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, building 345C, 2800, Kgs. Lyngby, Denmark
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Luo L, Zhu D, Zhang Z, Zeng H, Huang M, Zhou S. 11β-Hydroxysteroid dehydrogenase type 1 amplifies inflammation in LPS-induced THP-1 cells. Iran J Basic Med Sci 2023; 26:374-379. [PMID: 36865036 PMCID: PMC9922366 DOI: 10.22038/ijbms.2023.67927.14852] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/22/2022] [Indexed: 03/04/2023]
Abstract
Objectives The role of glucocorticoids as anti-inflammatory and immune-stimulatory drugs has been widely reported. However, the role of 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1), which catalyzes the conversion of inactive cortisone into active cortisol, in inflammation remains unclear. This study aimed to examine the mechanism of actions of 11β-HSD1 in lipopolysaccharide (LPS)-induced THP-1 cells. Materials and Methods The gene expression of 11β-HSD1 and pro-inflammatory cytokines was detected via RT-PCR. The protein expression of IL-1β in cell supernatants was detected via ELISA. Oxidative stress and mitochondrial membrane potential were assessed using a reactive oxygen species (ROS) kit and a mitochondrial membrane potential (MMP) kit, respectively. The expression of Nuclear Factor- Kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) was detected via western blotting. Results Elevated levels of 11β-HSD1 contributed to the expression of inflammatory cytokines, whereas BVT.2733, a selective 11β-HSD1 inhibitor, ameliorated inflammatory responses, ROS, and mitochondrial damage in LPS-stimulated THP-1 cells. Furthermore, cortisone and cortisol, which are the substrate and product of 11β-HSD1, respectively, showed biphasic responses and induced the expression of pro-inflammatory cytokines at a low concentration in both LPS-stimulated or untreated THP-1 cells. The enhanced inflammation was attenuated by co-treatment with BVT.2733 and the glucocorticoid receptor (GR) antagonist RU486, but not in those treated with the mineralocorticoid receptor (MR) antagonist spironolactone. Overall, the results indicate that 11β-HSD1 amplifies inflammatory responses by activating the NF-κB and MAPK signaling pathways. Conclusion Inhibition of 11β-HSD1 may serve as a potential therapeutic target against the excessive activation of inflammation.
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Affiliation(s)
- Lingli Luo
- Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China
| | - Dongmei Zhu
- Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China
| | - Zheng Zhang
- Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China
| | - Hanjie Zeng
- Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China
| | - Min Huang
- Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China
| | - Suming Zhou
- Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China,Corresponding author: Suming Zhou. Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University. NO.300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, China. Tel/ Fax: +86-2568305053;
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Shi JJ, Wu D, Liu TZ, Hao SJ, Meng BC, Li SL, Liu YN. Comparative of Forensic DNA Identification Using Cell Lysis Method and Magnetic Beads Method. Fa Yi Xue Za Zhi 2023; 39:45-49. [PMID: 37038855 DOI: 10.12116/j.issn.1004-5619.2022.520202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
OBJECTIVES To compare the effects of cell lysis method and magnetic beads method in forensic DNA identification and to explore these two methods in forensic DNA identification. METHODS The genome DNA of THP-1 cells in different quantities was extracted by the cell lysis method and magnetic beads method, and the DNA content was quantified by real-time quantitative PCR. The cell lysis method and magnetic beads method were used to type the STR of human blood with different dilution ratios. RESULTS When the numbers of THP-1 cell were 100, 400 and 800, the DNA content extracted by cell lysis method were (1.219±0.334), (5.081±0.335), (9.332±0.318) ng, respectively; and the DNA content extracted by magnetic beads method were (1.020±0.281), (3.634±0.482), (7.896±0.759) ng, respectively. When the numbers of THP-1 cells were 400 and 800, the DNA content extracted by the cell lysis method was higher than that by the magnetic beads method. The sensitivity of cell lysis method and magnetic beads method was similar in STR typing of human blood at different dilution ratios. Complete STR typing could be obtained at 100, 300 and 500-fold dilutions of blood samples, but could not be detected at 700-fold dilution. STR typing of undiluted human blood could not be detected by cell lysis method. CONCLUSIONS The cell lysis method is easy to operate and can retain template DNA to the maximum extend. It is expected to be suitable for trace blood evidence tests.
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Affiliation(s)
- Jia-Jun Shi
- Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai 200083, China
| | - Dan Wu
- Shanghai Public Security College, Shanghai 200137, China
| | - Tie-Zhu Liu
- Institute of Criminal Science and Technology, Putuo Branch of Shanghai Public Security Bureau, Shanghai 200333, China
| | - Si-Jing Hao
- Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai 200083, China
| | - Bi-Cheng Meng
- Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai 200083, China
| | - Shi-Lin Li
- Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Ya-Nan Liu
- Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai 200083, China
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Pahović PŠ, Iulini M, Maddalon A, Galbiati V, Buoso E, Dolenc MS, Corsini E. In Vitro Effects of Bisphenol Analogs on Immune Cells Activation and Th Differentiation. Endocr Metab Immune Disord Drug Targets 2023; 23:EMIDDT-EPUB-129555. [PMID: 36797609 DOI: 10.2174/1871530323666230216150614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/01/2022] [Accepted: 12/20/2022] [Indexed: 02/18/2023]
Abstract
AIMS Investigate the immunomodulatory effects of bisphenols in the THP-1 cell line and peripheral blood mononuclear cells in response to lipopolysaccharide (LPS) activation or to phorbol 12-myristate 13-acetate (PMA) and ionomycin. BACKGROUND We have previously demonstrated the usefulness of the evaluation of RACK1 expression as a link between endocrine disrupting activity and the immunotoxic effect of xenobiotics. We demonstrated that while BPA and BPAF reduced RACK1 expression, BPS was able to increase it. OBJECTIVE Bisphenol A (BPA) is one of the most commonly used chemicals in the manufacturing of polycarbonate plastics and plastic consumer products. Its endocrine disrupting (ED) potential and changes in European regulations have led to replacing BPA in many uses with structurally similar chemicals, like bisphenol AF (BPAF) and bisphenol S (BPS). However, emerging data indicated that bisphenol analogues may not be safer than BPA both in toxic effects and ED potential. METHODS THP-1 cell line and peripheral blood mononuclear cells were activated with lipopolysaccharide (LPS) or with phorbol 12-myristate 13-acetate (PMA) and ionomycin. RESULTS BPA and BPAF decreased LPS-induced expression of surface markers and the release of pro-inflammatory cytokines, while BPS increased LPS-induced expression of CD86 and cytokines. BPA, BPAF, and BPS affected PMA/ionomycin-induced T helper differentiation and cytokine release with gender-related alterations in some parameters investigated. CONCLUSION Data confirm that bisphenols can modulate immune cell differentiation and activation, further supporting their immunotoxic effects.
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Affiliation(s)
- Pia Štrukelj Pahović
- Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Martina Iulini
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Ambra Maddalon
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Valentina Galbiati
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Erica Buoso
- Department of Drugs Sciences, University of Pavia, Pavia, Italy
| | | | - Emanuela Corsini
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
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Ali MA, Aswathy KA, Munuswamy-Ramanujam G, Jaisankar V. Pyridine and isoxazole substituted 3-formylindole-based chitosan Schiff base polymer: Antimicrobial, antioxidant and in vitro cytotoxicity studies on THP-1 cells. Int J Biol Macromol 2023; 225:1575-1587. [PMID: 36436605 DOI: 10.1016/j.ijbiomac.2022.11.214] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022]
Abstract
This paper presents the synthesis of two new chitosan Schiff base (CSB) polymers, namely, 2PCT and 4MCT based on pyridin-2-ylmethyl-1H-indole-3-carbaldehyde and 1-(4-methyl-3,5-dimethylisoxazole)-1H-indole-3-carbaldehyde with chitosan (CT). The structural features of CSB polymers were confirmed by Fourier-transform infrared (FTIR) and proton nuclear magnetic resonance (1H NMR) spectroscopy and their antimicrobial activity was evaluated against Staphylococcus aureus, Escherichia coli and Candida albicans. The antioxidant studies found that both 2PCT and 4MCT presented significant free radical scavenging activity with IC50 at 169.01 and 372.84 μg/mL, respectively. The cell viability results obtained from in vitro cytotoxicity studies performed using human monocyte leukemia (THP-1) cells were found to be 75.6 ± 0.25 % and 79.1 ± 1.5 % for 2PCT and 4MCT, respectively, at a concentration of 10 mg/mL. Flow cytometry analysis demonstrated the reducing ability of CSB polymers on intracellular reactive oxygen species (ROS) in THP-1 cells. The overall results of antioxidant activity, in vitro biocompatibility and ability to reduce the intracellular ROS production emphasized that the CSB polymers prepared could serve as a potential biomaterial in biomedical applications, such as wound treatment process.
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Affiliation(s)
- M Ameer Ali
- Department of Chemistry, The New College (Autonomous), Chennai 600014, Tamil Nadu, India; Department of Chemistry, Presidency College (Autonomous), Chennai 600005, Tamil Nadu, India
| | - K A Aswathy
- Division of Molecular Biology and Immuno Biology, IIISM, SRM IST, Kattankulathur, 603203, Tamil Nadu, India
| | - Ganesh Munuswamy-Ramanujam
- Division of Molecular Biology and Immuno Biology, IIISM, SRM IST, Kattankulathur, 603203, Tamil Nadu, India; Department of Chemistry, Faculty of Science & Humanities, SRM IST, Kattankulathur, 603203, Tamil Nadu, India
| | - V Jaisankar
- Department of Chemistry, Presidency College (Autonomous), Chennai 600005, Tamil Nadu, India.
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Barcena ML, Estepa M, Marx L, Breiter A, Haritonow N, Stawowy P. The impact of the PCSK-9/VLDL-Receptor axis on inflammatory cell polarization. Cytokine 2023; 161:156077. [PMID: 36356495 DOI: 10.1016/j.cyto.2022.156077] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/26/2022] [Accepted: 10/14/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Studies have shown that lipoproteins, such as LDL and VLDL, as well as its major protein component ApoE2 impact on macrophage polarization important in atherosclerosis. Proprotein convertase subtilisin/kexin 9 (PCSK9) is a key regulator of lipoprotein receptor expression. The present study investigated the effect of the VLDL/VLDL-receptor (VLDL-R) axis on mononuclear cell polarization, as well as the role of PCSK9 and PCSK9 inhibitors (PCSK9i) within this network. METHODS Human monocytic THP-1 cells and human monocyte-derived macrophages isolated from peripheral blood mononuclear cells (PBMC) were treated with either LPS/IFN-γ to induce a pro-inflammatory phenotype, or with IL-4/IL-13 to induce an anti-inflammatory phenotype. Cells were then subjected to further treatments by lipoproteins, PCSK9, PCSK9i and lipoprotein receptor blockers. RESULTS LPS/IFN-γ treatment promoted a pro-inflammatory state with an increased expression of pro-inflammatory mediators such as TNF-α, CD80 and IL-1β. VLDL co-treatment induced a switch of this pro-inflammatory phenotype to an anti-inflammatory phenotype. In pro-inflammatory cells, VLDL significantly decreased the expression of pro-inflammatory markers e.g., TNF-α, CD80, and IL-1β. These effects were eliminated by PCSK9 and restored by co-incubation with a specific anti-PCSK9 monoclonal antibody (PCSK9i). Migration assays demonstrated that pro-inflammatory cells displayed a significantly higher invasive capacity when compared to untreated cells or anti-inflammatory cells. Moreover, pro-inflammatory cell chemotaxis was significantly decreased by VLDL-mediated acquisition of the anti-inflammatory phenotype. PCSK9 significantly lessened this VLDL-mediated migration inhibition, which was reversed by the PCSK9i. CONCLUSION VLDL promotes mononuclear cell differentiation towards an anti-inflammatory phenotype. PCSK9, via its capacity to inhibit VLDL-R expression, reverses the VLDL-mediated anti-inflammatory action, thereby promoting a pro-inflammatory phenotype. Thus, PCSK9 targeting therapies may exert anti-inflammatory properties within the vessel wall.
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Pacini L, D'Ercole A, Papini AM, Bani D, Nistri S, Rovero P. Porcine Relaxin but Not Serelaxin Shows Residual Bioactivity after In Vitro Simulated Intestinal Digestion-Clues for the Development of New Relaxin Peptide Agonists Suitable for Oral Delivery. Int J Mol Sci 2022; 24. [PMID: 36613489 DOI: 10.3390/ijms24010048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/07/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Despite human recombinant H2 relaxin or serelaxin holding promise as a cardiovascular drug, its actual efficacy in chronic treatment of heart failure patients was hampered by the need to be administered by multiple daily IV injections for a long time, with obvious drawbacks in terms of patients' compliance. This in vitro study aimed at exploring the molecular background for a possible administration of the peptide hormone relaxin by the oral route. Serelaxin and purified porcine relaxin (pRLX) were subjected to simulated intestinal fluid (SIF) enzymatic digestion in vitro to mimic the behavior of gastroprotective formulations. The digestion time course was studied by HPLC, and the relative bio-potency of the intact molecules and their proteolytic fragments was assessed by second messenger (cAMP) response in RXFP1 relaxin receptor-bearing THP-1 human monocytic cells. Both intact proteins (100 ng/mL) induced a significant cAMP rise in THP-1 cells. Conversely, SIF-treated serelaxin showed a brisk (30 s) bioactivity decay, dropping down to the levels of the unstimulated controls at 120 s, whereas SIF-treated pRLX retained significant bioactivity for up to 120 s. After that, it progressively declined to the levels of the unstimulated controls. HPLC analysis indicates that this bioactivity could be ascribed to a minor component of the pRLX sample more resistant to proteolysis. When identified and better characterized, this peptide could be exploited for the development of synthetic relaxin agonists suitable for oral formulations.
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Fonseca S, Carvalho AL, Miquel-Clopés A, Jones EJ, Juodeikis R, Stentz R, Carding SR. Extracellular vesicles produced by the human gut commensal bacterium Bacteroides thetaiotaomicron elicit anti-inflammatory responses from innate immune cells. Front Microbiol 2022; 13:1050271. [PMID: 36439842 PMCID: PMC9684339 DOI: 10.3389/fmicb.2022.1050271] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/25/2022] [Indexed: 07/24/2023] Open
Abstract
Bacterial extracellular vesicles (BEVs) produced by gut commensal bacteria have been proposed to play an important role in maintaining host homeostasis via interactions with the immune system. Details of the mediators and pathways of BEV-immune cell interactions are however incomplete. In this study, we provide evidence for the anti-inflammatory and immunomodulatory properties of extracellular vesicles produced by the prominent human gut commensal bacterium Bacteroides thetaiotaomicron (Bt BEVs) and identify the molecular mechanisms underlying their interaction with innate immune cells. Administration of Bt BEVs to mice treated with colitis-inducing dextran sodium sulfate (DSS) ameliorates the symptoms of intestinal inflammation, improving survival rate and reducing weight loss and disease activity index scores, in association with upregulation of IL-10 production in colonic tissue and in splenocytes. Pre-treatment (conditioning) of murine bone marrow derived monocytes (BMDM) with Bt BEVs resulted in higher ratio of IL-10/TNFα production after an LPS challenge when compared to LPS pre-conditioned or non-conditioned BMDM. Using the THP-1 monocytic cell line the interactions between Bt BEVs and monocytes/macrophages were shown to be mediated primarily by TLR2. Histone (H3K4me1) methylation analysis showed that Bt BEVs induced epigenetic reprogramming which persisted after infectious challenge, as revealed by increased levels of H3K4me1 in Bt BEV-conditioned LPS-challenged BMDM. Collectively, our findings highlight the important role of Bt BEVs in maintaining host immune homeostasis and raise the promising possibility of considering their use in immune therapies.
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Affiliation(s)
- Sonia Fonseca
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Ana L. Carvalho
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
- Department of Women’s and Children’s Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | | | - Emily J. Jones
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Rokas Juodeikis
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Régis Stentz
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Simon R. Carding
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, United Kingdom
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom
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Ali MA, Musthafa SA, Munuswamy-Ramanujam G, Jaisankar V. 3-Formylindole-based chitosan Schiff base polymer: Antioxidant and in vitro cytotoxicity studies on THP-1 cells. Carbohydr Polym 2022; 290:119501. [PMID: 35550779 DOI: 10.1016/j.carbpol.2022.119501] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/29/2022] [Accepted: 04/13/2022] [Indexed: 11/27/2022]
Abstract
Two imine derivatives of chitosan (i-CTs), namely 2FCT and 5MCT, were synthesized by reacting chitosan (CT) with 2-(3-formyl-1H-indol-1yl)acetonitrile (2F), and 5-methoxyindole-3-carbaldehyde (5M), respectively. The antimicrobial evaluation of i-CTs exhibited stronger inhibition effect against Staphylococcus aureus, Escherichia coli and Candida albicans. The antioxidant activity of 2FCT and 5MCT showed strong scavenging ability with IC50 2.31 and 6.92 μg/mL, respectively. The results of in vitro cytotoxicity of 2FCT and 5MCT examined using human monocyte leukemia (THP-1) cells indicate no cytotoxic effect on host cells and the value of cell viability was found to be 87.08 and 84.47%, respectively. Measurement of intracellular Reactive Oxygen Species (ROS) production by flow cytometry analysis revealed that the 2FCT and 5MCT reduced the ROS generation by 83 and 43%, respectively. In summary, these findings show that i-CTs synthesized to be promising biomaterial for biomedical applications such as wound healing.
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Affiliation(s)
- M Ameer Ali
- Department of Chemistry, The New College (Autonomous), Chennai 600014, TN, India; Department of Chemistry, Presidency College (Autonomous), Chennai 600005, TN, India
| | - Shazia Anjum Musthafa
- Division of Molecular Biology and Immuno Biology, IIISM, SRM IST, Kattankulathur 603203, TN, India
| | - Ganesh Munuswamy-Ramanujam
- Division of Molecular Biology and Immuno Biology, IIISM, SRM IST, Kattankulathur 603203, TN, India; Department of Chemistry, Faculty of Science & Humanities, SRM IST, Kattankulathur 603203, TN, India
| | - V Jaisankar
- Department of Chemistry, Presidency College (Autonomous), Chennai 600005, TN, India.
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Li P, Ma C, Li J, You S, Dang L, Wu J, Hao Z, Li J, Zhi Y, Chen L, Sun S. Proteomic characterization of four subtypes of M2 macrophages derived from human THP-1 cells. J Zhejiang Univ Sci B 2022; 23:407-422. [PMID: 35557041 DOI: 10.1631/jzus.b2100930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Macrophages are widely distributed immune cells that contribute to tissue homeostasis. Human THP-1 cells have been widely used in various macrophage-associated studies, especially those involving pro-inflammatory M1 and anti-inflammatory M2 phenotypes. However, the molecular characterization of four M2 subtypes (M2a, M2b, M2c, and M2d) derived from THP-1 has not been fully investigated. In this study, we systematically analyzed the protein expression profiles of human THP-1-derived macrophages (M0, M1, M2a, M2b, M2c, and M2d) using quantitative proteomics approaches. The commonly and specially regulated proteins of the four M2 subtypes and their potential biological functions were further investigated. The results showed that M2a and M2b, and M2c and M2d have very similar protein expression profiles. These data could serve as an important resource for studies of macrophages using THP-1 cells, and provide a reference to distinguish different M2 subtypes in macrophage-associated diseases for subsequent clinical research.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Shisheng Sun
- College of Life Science, Northwest University, Xi'an 710069, China.
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Chen SS, Zhu HS, Dong N, Zhang YP, Wu M, Liu LH, Shi Q, Li D, Ju XL. [Effect of miltirone on proliferation and apoptosis of leukemia THP-1 cells]. Zhongguo Zhong Yao Za Zhi 2022; 47:2541-2546. [PMID: 35531702 DOI: 10.19540/j.cnki.cjcmm.20211206.701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
To investigate the toxicity and related mechanism of miltirone to human acute myeloid leukemia THP-1 cells. To be specific, the active components and targets of miltirone were retrieved from Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP), and the target proteins were converted into standard gene names with UniProt. Acute leukemia-rela-ted target genes were screened from GeneCards and DisGeNET. Venn diagram was constructed with Venny 2.1 to yield the common targets of the disease and the drug. The protein-protein interaction(PPI) network was constructed by STRING and Cytoscape 3.8.2. THP-1 cells in the logarithmic growth phase were treated with dimethyl sulfoxide(DMSO), and 2.5, 5, 10, 15, and 20 μmol·L~(-1) miltirone for 24 h, respectively. The proliferation rate of cells was analyzed by carboxyfluorescein diacetate succinimidyl ester(CFSE), apoptosis rate by flow cytometry with Annexin V-PE/7 AAD staining, and cell morphology by acridine orange staining. Real-time quantitative PCR(qPCR) was employed to detect the mRNA levels of nuclear receptor coactivator 2(NCOA2), poly(ADP-ribose) polymerase-1(PARP1), B-cell lymphoma-2(Bcl-2)-associated X protein(Bax), Bcl-2, and cysteine aspartyl protease-3(caspase-3). The effect of miltirone on apoptosis was detected in presence of caspase inhibitor Z-VAD-FMK. A total of 26 targets of miltirone, 1 046 genes related to acute leukemia, and 6 common targets of the two were screened out. Flow cytometry result showed miltirone at 10 μmol·L~(-1) can inhibit proliferation and promote apoptosis of THP-1 cells. The typical manifestations of apoptosis, such as cell shrinkage, nuclear rupture, and chromatin agglomerate were displayed by acridine orange staining. The decreased mRNA levels of NCOA2 and PARP1 and increased Bax/Bcl-2 ratio and the activity of pro-apoptotic protein caspase-3 were observed. Z-VAD-FMK can attenuate the apoptosis-inducing effect of miltirone. This study indicates that miltirone can inhibit the proliferation and promote the apoptosis of THP-1 cells, by down-regulating NCOA2 and PARP1, raising Bax/Bcl-2 ratio, and activating caspase-3.
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Affiliation(s)
- Shan-Shan Chen
- Cheeloo College of Medicine, Shandong University Ji'nan 250012, China
| | - Hua-Su Zhu
- Cheeloo College of Medicine, Shandong University Ji'nan 250012, China
| | - Na Dong
- Cheeloo College of Medicine, Shandong University Ji'nan 250012, China
| | - Ya-Ping Zhang
- Cheeloo College of Medicine, Shandong University Ji'nan 250012, China
| | - Min Wu
- Cheeloo College of Medicine, Shandong University Ji'nan 250012, China
| | - Ling-Hong Liu
- Research Center of Stem Cell and Regenerative Medicine, Shandong University Ji'nan 250012, China
| | - Qing Shi
- Research Center of Stem Cell and Regenerative Medicine, Shandong University Ji'nan 250012, China
| | - Dong Li
- Research Center of Stem Cell and Regenerative Medicine, Shandong University Ji'nan 250012, China
| | - Xiu-Li Ju
- Department of Pediatrics, Qilu Hospital of Shandong University Ji'nan 250012, China
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Molina-Olvera G, Rivas-Ortiz CI, Schcolnik-Cabrera A, Castillo-Rodal AI, López-Vidal Y. RNA Microarray-Based Comparison of Innate Immune Phenotypes between Human THP-1 Macrophages Stimulated with Two BCG Strains. Int J Mol Sci 2022; 23:4525. [PMID: 35562916 DOI: 10.3390/ijms23094525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 04/13/2022] [Indexed: 12/10/2022] Open
Abstract
Currently, the only available vaccine against tuberculosis is Mycobacterium bovis Bacille Calmette-Guérin (BCG). Pulmonary tuberculosis protection provided by the vaccine varies depending on the strain, the patient’s age and the evaluated population. Although the adaptive immune responses induced by different BCG strains have been widely studied, little conclusive data is available regarding innate immune responses, especially in macrophages. Here, we aimed to characterize the innate immune responses of human THP-1-derived macrophages at the transcriptional level following a challenge with either the BCG Mexico (M.BCG) or Phipps (P.BCG) strains. After a brief in vitro characterization of the bacterial strains and the innate immune responses, including nitric oxide production and cytokine profiles, we analyzed the mRNA expression patterns and performed pathway enrichment analysis using RNA microarrays. Our results showed that multiple biological processes were enriched, especially those associated with innate inflammatory and antimicrobial responses, including tumor necrosis factor (TNF)-α, type I interferon (IFN-I) and IFN-γ. However, four DEGs were identified in macrophages infected with M.BCG compared to P. BCG. These findings indicated the proinflammatory stimulation of macrophages induced by both BCG strains, at the cytokine level and in terms of gene expression, suggesting a differential expression pattern of innate immune transcripts depending on the mycobacterial strain.
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Ramos-Sanchez EM, Reis LC, Souza MDA, Muxel SM, Santos KR, Lagos D, Pereira VRA, de Brito MEF, Kaye PM, Floeter-Winter LM, Goto H. Corrigendum: miR-548d-3p Is Up-regulated in Human Visceral Leishmaniasis and Suppresses Parasite Growth in Macrophages. Front Cell Infect Microbiol 2022; 12:876035. [PMID: 35372119 PMCID: PMC8970010 DOI: 10.3389/fcimb.2022.876035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 11/13/2022] Open
Abstract
[This corrects the article DOI: 10.3389/fcimb.2022.826039.].
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Affiliation(s)
- Eduardo Milton Ramos-Sanchez
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
- Departamento de Salud Publica, Facultad de Ciencias de La Salud, Universidad Nacional Toribio Rodriguez de Mendoza de Amazonas, Chachapoyas, Peru
- Graduate Program in Animal Science, Agrarian Sciences Center (CCA), Federal University of Paraiba (UFPB), Areia, Brazil
| | - Luiza Campos Reis
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
| | - Marina de Assis Souza
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
| | - Sandra Márcia Muxel
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Kamila Reis Santos
- Veterinary Clinical Immunology Research Group, Departamento de Clínica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Dimitris Lagos
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | | | | | - Paul Martin Kaye
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | | | - Hiro Goto
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
- Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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Ramos-Sanchez EM, Reis LC, Souza MDA, Muxel SM, Santos KR, Lagos D, Pereira VRA, de Brito MEF, Kaye PM, Floeter-Winter LM, Goto H. miR-548d-3p Is Up-Regulated in Human Visceral Leishmaniasis and Suppresses Parasite Growth in Macrophages. Front Cell Infect Microbiol 2022; 12:826039. [PMID: 35265535 PMCID: PMC8900537 DOI: 10.3389/fcimb.2022.826039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/24/2022] [Indexed: 11/30/2022] Open
Abstract
Visceral leishmaniasis caused by Leishmania (Leishmania) infantum in Latin America progress with hepatosplenomegaly, pancytopenia, hypergammaglobulinemia, and weight loss and maybe lethal mainly in untreated cases. miRNAs are important regulators of immune and inflammatory gene expression, but their mechanisms of action and their relationship to pathogenesis in leishmaniasis are not well understood. In the present study, we sought to quantify changes in miRNAs associated with immune and inflammatory pathways using the L. (L.) infantum promastigote infected- human monocytic THP-1 cell model and plasma from patients with visceral leishmaniasis. We identified differentially expressed miRNAs in infected THP-1 cells compared with non-infected cells using qPCR arrays. These miRNAs were submitted to in silico analysis, revealing targets within functional pathways associated with TGF-β, chemokines, glucose metabolism, inflammation, apoptosis, and cell signaling. In parallel, we identified differentially expressed miRNAs in active visceral leishmaniasis patient plasma compared with endemic healthy controls. In silico analysis of these data indicated different predicted targets within the TGF-β, TLR4, IGF-I, chemokine, and HIF1α pathways. Only a small number of miRNAs were commonly identified in these two datasets, notably with miR-548d-3p being up-regulated in both conditions. To evaluate the potential biological role of miR-548d-3p, we transiently transfected a miR-548d-3p inhibitor into L. (L.) infantum infected-THP-1 cells, finding that inhibition of miR-548d-3p enhanced parasite growth, likely mediated through reduced levels of MCP-1/CCL2 and nitric oxide production. Further work will be required to determine how miR-548d-3p plays a role in vivo and whether it serves as a potential biomarker of progressive leishmaniasis.
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Affiliation(s)
- Eduardo Milton Ramos-Sanchez
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
- Departamento de Salud Publica, Facultad de Ciencias de La Salud, Universidad Nacional Toribio Rodriguez de Mendoza de Amazonas, Chachapoyas, Peru
- Graduate Program in Animal Science, Agrarian Sciences Center (CCA), Federal University of Paraiba (UFPB), Areia, Brazil
| | - Luiza Campos Reis
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
| | - Marina de Assis Souza
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
| | - Sandra Márcia Muxel
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Kamila Reis Santos
- Veterinary Clinical Immunology Research Group, Departamento de Clínica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Dimitris Lagos
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | | | | | - Paul Martin Kaye
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | | | - Hiro Goto
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
- Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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Ryu JM, Na HH, Park YJ, Park JS, Ahn BS, Kim KC. Sweet Bee Venom Triggers Multiple Cell Death Pathways or Spurs Acute Cell Rupture According to Its Concentration in THP-1 Monocytic Leukemia Cells. Genes (Basel) 2022; 13:223. [PMID: 35205267 DOI: 10.3390/genes13020223] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/22/2022] [Accepted: 01/23/2022] [Indexed: 02/06/2023] Open
Abstract
Sweet bee venom (sBV) contains various pharmacologically active components of bee venom (BV), but it is modified via the removal of the harmful substances found in BV. Thus, sBV has been used for pain relief in Oriental medicine but has only recently been applied for the treatment of various diseases. In this study, we examined the pharmacological effects and immunomodulatory functions of sBV in THP-1 monocytic leukemia cells. Growth inhibition and cell death were observed according to the concentration of sBV. However, the rapid collapse of cell cycle distribution was shown at 20 μg/mL sBV treatment, indicating that sBV led to cell death or acute cell rupture according to concentration. sBV administration activated Caspase-9, PARP1, RIPK1, and RIPK3, suggesting that the pharmacological actions of sBV were associated with induction of apoptosis and necroptosis. On the other hand, sBV or LPS administration increased cytokine expression, including IL-1β, and showed synergistic cell death in combinatory treatment conditions. Moreover, combinatory administration of sBV and LPS induced severe damage or death during egg development. This result implies that sBV exhibits both pharmacological and toxic effects depending on its concentration. Therefore, sBV might be a promising therapeutic approach, but optimal concentration should be considered before treatment.
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Park WS, Lee J, Na G, Park S, Seo SK, Choi JS, Jung WK, Choi IW. Benzyl Isothiocyanate Attenuates Inflammasome Activation in Pseudomonas aeruginosa LPS-Stimulated THP-1 Cells and Exerts Regulation through the MAPKs/NF-κB Pathway. Int J Mol Sci 2022; 23:ijms23031228. [PMID: 35163151 PMCID: PMC8835927 DOI: 10.3390/ijms23031228] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/17/2022] [Accepted: 01/20/2022] [Indexed: 12/11/2022] Open
Abstract
Inflammasomes are a group of intracellular multiprotein platforms that play important roles in immune systems. Benzyl isothiocyanate (BITC) is a constituent of cruciferous plants and has been confirmed to exhibit various biological activities. The modulatory effects of BITC on inflammasome-mediated interleukin (IL)-1β expression and its regulatory mechanisms in Pseudomonas aeruginosa (P. aeruginosa) LPS/ATP-stimulated THP-1 cells was investigated. Monocytic THP-1 cells were treated with phorbol myristate acetate (PMA) to induce differentiation into macrophages. Enzyme-linked immunosorbent assays (ELISA) were performed to measure the levels of IL-1β produced in P. aeruginosa LPS/ATP-exposed THP-1 cells. Western blotting was performed to examine the BITC modulatory mechanisms in inflammasome-mediated signaling pathways. BITC inhibited IL-1β production in P. aeruginosa LPS/ATP-induced THP-1 cells. BITC also inhibited activation of leucine-rich repeat protein-3 (NLRP3) and caspase-1 in P. aeruginosa LPS/ATP-induced THP-1 cells. Furthermore, we show that mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) activation in P. aeruginosa LPS was attenuated by BITC. These BITC-mediated modulatory effects on IL-1β production may have therapeutic potential for inflammasome-mediated disorders such as a nasal polyp.
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Affiliation(s)
- Won Sun Park
- Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, Korea;
| | - Jeonghan Lee
- Department of Anesthesiology and Pain Medicine, Busan Paik Hospital, Inje University, Busan 47392, Korea;
| | - Giyoun Na
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan 47392, Korea; (G.N.); (S.P.); (S.-K.S.)
| | - SaeGwang Park
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan 47392, Korea; (G.N.); (S.P.); (S.-K.S.)
| | - Su-Kil Seo
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan 47392, Korea; (G.N.); (S.P.); (S.-K.S.)
| | - Jung Sik Choi
- Department of Internal Medicine, Busan Paik Hospital, Inje University, Busan 47392, Korea;
| | - Won-Kyo Jung
- Department of Biomedical Engineering, Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan 48513, Korea;
| | - Il-Whan Choi
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan 47392, Korea; (G.N.); (S.P.); (S.-K.S.)
- Correspondence:
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Kassa MW, Hasang W, Rogerson SJ. Antibody-Dependent THP-1 Cell-Mediated Phagocytosis of Plasmodium falciparum-Infected Erythrocytes. Methods Mol Biol 2022; 2470:617-628. [PMID: 35881378 DOI: 10.1007/978-1-0716-2189-9_46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Antibodies that recognize variant surface antigens (VSAs) expressed on Plasmodium falciparum-infected erythrocytes (IEs) opsonize IEs for phagocytic clearance. The anti-VSA antibodies promote antibody-dependent cellular phagocytosis (ADCP) of IEs by interacting with innate immune cells. ADCP is an important immune effector mechanism of parasite clearance. ADCP can be a tool to assess the efficacy of vaccine-induced antibodies, in addition to measuring the neutralizing ability of antibodies. Here, we developed and validated an efficient and high-throughput plate-based flow cytometric assay to measure ADCP of IEs using the human monocytic THP-1 cell line. This flow cytometric assay can be used to analyze the level of naturally acquired or vaccine-induced opsonic antibodies in large cohorts.
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Affiliation(s)
- Meseret Workineh Kassa
- Department of Medicine, The Doherty Institute, The University of Melbourne, Melbourne, VIC, Australia
| | - Wina Hasang
- Department of Medicine, The Doherty Institute, The University of Melbourne, Melbourne, VIC, Australia
| | - Stephen John Rogerson
- Department of Medicine, The Doherty Institute, The University of Melbourne, Melbourne, VIC, Australia.
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Abstract
Apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC) is an adaptor protein that is essential for the activation of several inflammasome complexes. Activation of inflammasomes leads to pathogenic clearance and inflammatory cell death called pyroptosis. Upon inflammasome activation, ASC oligomerization leads to the recruitment and activation of caspase-1, which in turn converts pro-inflammatory cytokines (e.g., pro-IL-1β, pro-IL-18) to their mature active form. Given its central role in inflammasome activation, ASC oligomerization is used as an indicator of inflammasome activation. Here we describe how ASC oligomerization can be detected by Western blotting.
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Affiliation(s)
- Safoura Zangiabadi
- School of Kinesiology and Health Science, Muscle Health Research Centre (MHRC), York University, Toronto, ON, Canada
| | - Ali Akram
- School of Kinesiology and Health Science, Muscle Health Research Centre (MHRC), York University, Toronto, ON, Canada
| | - Ali A Abdul-Sater
- School of Kinesiology and Health Science, Muscle Health Research Centre (MHRC), York University, Toronto, ON, Canada.
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Shiraishi E, Ishida K, Matsumaru D, Ido A, Hiromori Y, Nagase H, Nakanishi T. Evaluation of the Skin-Sensitizing Potential of Brazilian Green Propolis. Int J Mol Sci 2021; 22:ijms222413538. [PMID: 34948335 PMCID: PMC8704603 DOI: 10.3390/ijms222413538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022] Open
Abstract
Propolis is a resinous mixture produced by bees from their secretions and plant material, so its composition varies depending on its botanical origin. Propolis has several beneficial bioactivities, but its skin sensitization properties have long been suspected. Nevertheless, the skin sensitization potency of Brazilian green propolis (BGP) has not been scientifically evaluated. Here, we used scientifically reliable tests to evaluate it. In vitro antigenicity test based on the human cell line activation test (OECD TG 442E) was performed by measuring the expression of CD54 and CD86, which are indicators of the antigenicity of test substances, on THP-1 and DC2.4 cells. BGP did not affect the expression of either marker on THP-1 cells, but upregulated the expression of CD86 on DC2.4 cells, suggesting that BGP may be a skin sensitizer. Then, we performed local lymph node assay (LLNA, OECD TG 429) as a definitive in vivo test. LLNA showed that 1.70% BGP primed skin sensitization and is a "moderate sensitizer". Our results indicate scientific proof of the validity of arbitrary concentrations (1-2%), which have been used empirically, and provide the first scientific information on the safe use of BGP.
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Affiliation(s)
- Erina Shiraishi
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
- Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Keishi Ishida
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
| | - Daisuke Matsumaru
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
| | - Akiko Ido
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
- Faculty of Pharmaceutical Sciences, Gifu University of Medical Science, 4-3-3 Nijigaoka, Kani 509-0293, Gifu, Japan
| | - Youhei Hiromori
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science 3500-3, Minamitamagaki, Suzuka 513-8670, Mie, Japan
| | - Hisamitsu Nagase
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
- Faculty of Pharmaceutical Sciences, Gifu University of Medical Science, 4-3-3 Nijigaoka, Kani 509-0293, Gifu, Japan
| | - Tsuyoshi Nakanishi
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Gifu, Japan; (E.S.); (K.I.); (D.M.); (A.I.); (Y.H.); (H.N.)
- Correspondence: ; Tel.: +81-58-230-8100; Fax: +81-58-230-8117
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Zhu YY, Zhao YC, Chen C, Xie M. CCL5 secreted by luminal B breast cancer cells induces polarization of M2 macrophages through activation of MEK/STAT3 signaling pathway via CCR5. Gene 2021; 812:146100. [PMID: 34864094 DOI: 10.1016/j.gene.2021.146100] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 10/31/2021] [Accepted: 11/16/2021] [Indexed: 12/19/2022]
Abstract
In humans, breast cancer affects a large number of females and causes a high rate of mortality worldwide. Chemokine (C-C motif) ligand 5 (CCL5) is one of the cytokines that is highly correlated to the invasive and metastatic stages of breast cancer. Our previous study has suggested the prognostic value of CCL5 expression in luminal B (HER2 - ) breast cancer. In this study, CCL5 expression was upregulated or knockdown in a luminal B breast cancer cell line, ZR7530. Further, we elucidated the effects of CCL5 on the differentiation of THP-1 monocytes into M2 macrophages. Overexpression of CCL5 affected THP-1-M2 differentiation and phosphorylation of MEK1/2, ERK1/2, and STAT2 in the cocultivated cell lines. We report that the knockdown of CCR5, a receptor of CCL5 in THP-1, inhibited the effect of ZR7530 in promoting THP-1-M2 differentiation. Furthermore, our data revealed that the inhibition of MEK1/2 and STAT3 in THP-1 cells produced equivalent results similar to those of CCL5 knockdown. In summary, we revealed the role of CCL5 in the polarization of M2 macrophages. Furthermore, we studied its interaction with CCR5 and MEK/STAT3 signaling members. These targets could be used as key regulatory members in human breast cancer therapy.
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Affiliation(s)
- Yong-Yun Zhu
- Department of Thyroid and Breast Surgery, Wuhu Second People's Hospital, China.
| | - Ying-Chun Zhao
- Department of Thyroid and Breast Surgery, Wuhu Traditional Chinese Medicine Hospital, China
| | - Chuang Chen
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, China
| | - Min Xie
- Department of pathology, Wuhu Second People's Hospital, China
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Cho YJ, Lee H, Kim J, Gong G, Lee HJ, Park IA. A DNA Topoisomerase II Inhibitor Results in Ex Vivo Differentiation of THP-1 Cells and Activation of Dendritic Cells. Anticancer Res 2021; 41:6087-6094. [PMID: 34848463 DOI: 10.21873/anticanres.15428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/29/2021] [Accepted: 08/31/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Effective ex vivo maturation of dendritic cells (DCs) can increase the efficiency of cancer immunotherapy. We aimed to identify novel chemicals with the potential to differentiate and activate immature DCs (iDCs) to mature DCs (mDCs). MATERIALS AND METHODS The expression of surface markers on THP-1 monocytes treated with the screened compounds was analyzed using FACS. Subsequent DC subset analysis and secreted cytokine profiling were also performed. RESULTS FACS analysis showed that THP-1 cells treated with amsacrine hydrochloride, a DNA topoisomerase II inhibitor, exhibited the typical phenotype of conventional DCs (cDCs). The expression of DC activation markers was also increased after amsacrine treatment. The profile of cytokines produced by THP-1 cells treated with amsacrine was similar to that of mDCs. CONCLUSION Amsacrine has an ex vivo capability of differentiating THP-1 monocytes into cDCs. As amsacrine has been used as a stable chemotherapeutic agent in humans, it can be useful for producing mDCs for cancer immunotherapy.
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Affiliation(s)
- Young Jin Cho
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Heejae Lee
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Jihyeong Kim
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Gyungyub Gong
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Hee Jin Lee
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea;
| | - In Ah Park
- Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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45
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Liang N, Beverly RL, Scottoline BP, Dallas DC. Peptides Derived from In Vitro and In Vivo Digestion of Human Milk Are Immunomodulatory in THP-1 Human Macrophages. J Nutr 2021; 152:331-342. [PMID: 34601601 PMCID: PMC8754566 DOI: 10.1093/jn/nxab350] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/11/2021] [Accepted: 09/23/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Milk proteins contain many encrypted bioactive peptides. Whether these bioactive peptides are released in the infant intestine and exert immunomodulatory activity remains unknown. OBJECTIVE This study examined in vitro immunomodulatory activities of peptides from in vitro- and in vivo-digested human milk. METHODS Peptides were extracted from in vitro-digested human milk and pooled intestinal samples from 8 infants fed human milk. Peptides extracted from in vitro-digested samples were fractionated. The in vitro effects of these peptides and fractions on the secretion of TNF-α and IL-8 in LPS-treated human immune THP-1 macrophages were evaluated. The significance of differences between in vitro peptide fraction treatment and control on cytokine production was analyzed by t test. LC-MS/MS-based peptidomics was conducted to identify the peptides. The peptides were screened for potential bioactivity using a sequence homology search using the Milk Bioactive Peptide Database (MBPDB). RESULTS Six fractions of the peptide mixture extracted from the in vitro-digested human milk significantly inhibited TNF-α production by LPS-challenged THP-1 macrophages. Fractions F4, F8, F11, F14, and F17 attenuated IL-8 secretion, and F6/7 and F18 increased IL-8 secretion. Peptides extracted from the pooled in vivo intestinal samples attenuated both TNF-α and IL-8 secretion. There were 266 and 418 peptides identified in the in vitro and in vivo samples, respectively. Among the peptides, 34 and 50 in the in vitro and in vivo samples, respectively, had >80% sequence similarity to bioactive peptides in the MBPDB. CONCLUSIONS Peptides released by in vitro and in vivo infant digestion of human milk were immunomodulatory in human immune cells; fractions F4, F8, and F11 were anti-inflammatory; and F6/7 and F18 were proinflammatory. Thirteen peptides were present in all fractions with anti-inflammatory activity, and 38 peptides were present in all fractions with proinflammatory activity. These peptides potentially contributed to the observed immunomodulatory activity of the peptide mixtures.
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Affiliation(s)
- Ningjian Liang
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
| | - Robert L Beverly
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
| | - Brian P Scottoline
- Department of Pediatrics, Oregon Health and Science University, Portland, OR, USA
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Nekrasova EV, Larionova EE, Danko K, Kuzmina DO, Shavva VS, Kudriavtsev IV, Orlov SV. Regulation of Apolipoprotein A-I Gene Expression in Human Macrophages by Oxidized Low-Density Lipoprotein. Biochemistry (Mosc) 2021; 86:1201-1213. [PMID: 34903152 DOI: 10.1134/s0006297921100047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/18/2021] [Accepted: 07/23/2021] [Indexed: 06/14/2023]
Abstract
Apolipoprotein A-I (ApoA-I) is a key component of reverse cholesterol transport in humans. In the previous studies, we demonstrated expression of the apoA-I gene in human monocytes and macrophages; however, little is known on the regulation of the apoA-I expression in macrophages during the uptake of modified low-density lipoprotein (LDL), which is one of the key processes in the early stages of atherogenesis leading to formation of foam cells. Here, we demonstrate a complex nature of the apoA-I regulation in human macrophages during the uptake of oxidized LDL (oxLDL). Incubation of macrophages with oxLDL induced expression of the apoA-I gene within the first 24 hours, but suppressed it after 48 h. Both effects depended on the interaction of oxLDL with the TLR4 receptor, rather than on the oxLDL uptake by the macrophages. The oxLDL-mediated downregulation of the apoA-I gene depended on the ERK1/2 and JNK cascades, as well as on the NF-κB cascade.
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Affiliation(s)
| | | | - Katerina Danko
- St. Petersburg State University, St. Petersburg, 199034, Russia
| | - Darya O Kuzmina
- St. Petersburg State University, St. Petersburg, 199034, Russia
| | | | | | - Sergey V Orlov
- Institute of Experimental Medicine, St. Petersburg, 197376, Russia.
- St. Petersburg State University, St. Petersburg, 199034, Russia
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Allen PE, Noland RC, Martinez JJ. Rickettsia conorii survival in THP-1 macrophages involves host lipid droplet alterations and active rickettsial protein production. Cell Microbiol 2021; 23:e13390. [PMID: 34464019 DOI: 10.1111/cmi.13390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/25/2021] [Accepted: 08/27/2021] [Indexed: 12/29/2022]
Abstract
Rickettsia conorii is a Gram-negative, cytosolic intracellular bacterium that has classically been investigated in terms of endothelial cell infection. However, R. conorii and other human pathogenic Rickettsia species have evolved mechanisms to grow in various cell types, including macrophages, during mammalian infection. During infection of these phagocytes, R. conorii shifts the host cell's overall metabolism towards an anti-inflammatory M2 response, metabolically defined by an increase in host lipid metabolism and oxidative phosphorylation. Lipid metabolism has more recently been identified as a key regulator of host homeostasis through modulation of immune signalling and metabolism. Intracellular pathogens have adapted mechanisms of hijacking host metabolic pathways including host lipid catabolic pathways for various functions required for growth and survival. In the present study, we hypothesised that alterations of host lipid droplets initiated by lipid catabolic pathways during R. conorii infection is important for bacterial survival in macrophages. Herein, we determined that host lipid droplet modulation is initiated early during R. conorii infection, and these alterations rely on active bacteria and lipid catabolic pathways. We also find that these lipid catabolic pathways are essential for efficient bacterial survival. Unlike the mechanisms used by other intracellular pathogens, the catabolism of lipid droplets induced by R. conorii infection is independent of upstream host peroxisome proliferator-activated receptor-alpha (PPARα) signalling. Inhibition of PPARɣ signalling and lipid droplet accumulation in host cells cause a significant decrease in R. conorii survival suggesting a negative correlation with lipid droplet production and R. conorii survival. Together, these results strongly suggest that the modulation of lipid droplets in macrophage cells infected by R. conorii is an important and underappreciated aspect of the infection process. TAKE AWAYS: Host lipid droplets are differentially altered in early and replicative stages of THP-1 macrophage infection with R. conorii. Lipid droplet alterations are initiated in a bacterial-dependent manner and do not require host peroxisome proliferator-activated receptors α or ɣ activation. Pharmacological inhibition of host lipid catabolic processes during R. conorii infection indicates a requirement of lipid catabolism for bacterial survival and initiation of lipid droplet modulation. A significant increase in host lipid droplets during infection has a negative impact on R. conorii survival in THP-1 macrophages.
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Affiliation(s)
- Paige E Allen
- Vector Borne Disease Laboratories, Department of Pathobiological Sciences, LSU School of Veterinary Medicine, Baton Rouge, Louisiana, USA
| | - Robert C Noland
- Skeletal Muscle Metabolism Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Juan J Martinez
- Vector Borne Disease Laboratories, Department of Pathobiological Sciences, LSU School of Veterinary Medicine, Baton Rouge, Louisiana, USA
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Reddi KK, Li H, Li W, Tetali SD. Berberine, A Phytoalkaloid, Inhibits Inflammatory Response Induced by LPS through NF-Kappaβ Pathway: Possible Involvement of the IKKα. Molecules 2021; 26:4733. [PMID: 34443321 DOI: 10.3390/molecules26164733] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 11/17/2022] Open
Abstract
Berberine (BBR), a plant alkaloid, is known for its therapeutic properties of anticancer, cardioprotective, antidiabetic, hypolipidemic, neuroprotective, and hepatoprotective activities. The present study was to determine the molecular mechanism of BBR’s pharmacological activity in human monocytic (THP-1) cells induced by arachidonic acid (AA) or lipopolysaccharide (LPS). The effect of BBR on AA/LPS activated proinflammatory markers including TNF-α, MCP-1, IL-8 and COX-2 was measured by ELISA or quantitative real-time PCR. Furthermore, the effect of BBR on LPS-induced NF-κB translocation was determined by immunoblotting and confocal microscopy. AA/ LPS-induced TNF-α, MCP-1, IL-6, IL-8, and COX-2 markers were markedly attenuated by BBR treatment in THP-1 cells by inhibiting NF-κB translocation into the nucleus. Molecular modeling studies suggested the direct interaction of BBR to IKKα at its ligand binding site, which led to the inhibition of the LPS-induced NF-κB translocation to the nucleus. Thus, the present study demonstrated the anti-inflammatory potential of BBR via NF-κB in activated monocytes, whose interplay is key in health and in the pathophysiology of atherosclerotic development in blood vessel walls. The present study findings suggest that BBR has the potential for treating various chronic inflammatory disorders.
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He Y, Chen D, Guo Q, Shi P, You C, Feng Y. MicroRNA-151a-3p Functions in the Regulation of Osteoclast Differentiation: Significance to Postmenopausal Osteoporosis. Clin Interv Aging 2021; 16:1357-1366. [PMID: 34290498 PMCID: PMC8286966 DOI: 10.2147/cia.s289613] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 06/05/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Studies have found the pivotal role of miRNAs in the progression of postmenopausal osteoporosis (OP). However, the function of miRNAs in OP is unclear. This study aimed to explore the biological functions of microRNA-151a-3p in OP. METHODS RT-qPCR was employed to assess the expression of microRNA-151a-3p in serum isolated from OP patients and healthy controls. Dual-energy X-ray absorptiometry (DXA) was used to measure the bone mineral density (BMD) of the lumbar spine. The expression levels of c-Fos, NFATc1, and TRAP were tested by Western blot. Ovariectomized (OVX) rats were treated with antago microRNA-151a-3p or antago NC, and then serum and lumbar vertebrae were collected for ELISA and bone histomorphology analysis. RESULTS The expression of microRNA-151a-3p in postmenopausal women with osteoporosis was significantly up-regulated, and microRNA-151a-3p level was negatively correlated with BMD. During osteoclastogenesis, microRNA-151a-3p level was obviously increased. Overexpression of microRNA-151a-3p promoted the differentiation of RANKL-induced THP-1 and RAW264.7 cells into osteoclasts, whereas silencing of microRNA-151a-3p resulted in the opposite results. Silencing of microRNA-151a-3p in OVX rats altered osteoclastogenesis-related factors and raised BMD. CONCLUSION MicroRNA-151a-3p could partly regulate osteoporosis by promoting osteoclast differentiation, and miRNA-151a-3p could be a potential therapeutic target for postmenopausal osteoporosis.
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Affiliation(s)
- Yuehui He
- Community Medicine Department, Beijing Jishuitan Hospital, Beijing City, 100096, People’s Republic of China
| | - Di Chen
- Community Medicine Department, Beijing Jishuitan Hospital, Beijing City, 100096, People’s Republic of China
| | - Qian Guo
- Community Medicine Department, Beijing Jishuitan Hospital, Beijing City, 100096, People’s Republic of China
| | - Pinghua Shi
- Community Medicine Department, Beijing Jishuitan Hospital, Beijing City, 100096, People’s Republic of China
| | - Conglei You
- Community Medicine Department, Beijing Jishuitan Hospital, Beijing City, 100096, People’s Republic of China
| | - Yanping Feng
- Community Medicine Department, Beijing Jishuitan Hospital, Beijing City, 100096, People’s Republic of China
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50
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Nassar M, Zadri F, Slimani S. Assessment of Protective Effects of Methanolic Extract of Salvia verbenaca Roots Against Oxidative Damage Induced by Hydrogen Peroxide. Turk J Pharm Sci 2021; 18:360-366. [PMID: 34157827 DOI: 10.4274/tjps.galenos.2020.74555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Objectives Salvia verbenaca is a medicinal plant that has been traditionally used in Algeria for the treatment of wounds and emptied abscesses. The present study aimed to evaluate the cytotoxicity of methanolic extract of S. verbenaca roots and explore its ability to bestow protection against oxidative damage induced by H2O2 (200 μM). Materials and Methods The cytotoxic effects and protective properties of S. verbenaca on human monocytic leukemia cells (THP-1) was studied using thiazolyl blue tetrazolium bromide assay. The protective effects of the extract against H2O2-induced oxidative damage was evaluated using single cell gel electrophoresis (comet) assay and 2,7-dichlorodihydrofluorescien diacetate (H2DCFDA) assay. Results S. verbenaca extract was found to be non-cytotoxic at concentrations <500 μg/mL. However, the use of 500 and 1000 μg/mL of the extract decreasedcell viability. H2DCFDA assay provided evidence for anti-oxidative properties of S. verbenaca. Addition of S. verbenaca (1 and 10 μg/mL) resulted in significant reductionin H2O2-induced reactive oxygen species (ROS) production. Further, comet assay showed that addition of the extract resulted in a significant reductionin the length and % DNA content of comet tail. Additionally,nuclei in the cells also appeared to be devoid ofdegradation. Conclusion The use of S. verbenaca root extract conferred protection against H2O2-induced ROS production and DNA breakage in vitro.
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Affiliation(s)
- Meryem Nassar
- University of 20 Aout 1955, Department of Natural Science and Life, Skikda, Algeria
| | - Fethia Zadri
- University of 20 Aout 1955, Department of Natural Science and Life, Skikda, Algeria
| | - Souheila Slimani
- University of 20 Aout 1955, Department of Natural Science and Life, Skikda, Algeria
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