1
|
Yu L, Wei Y, Lu T, Li Z, Lai S, Yan Y, Chen C, Wen W. The SMYD3-dependent H3K4me3 status of IGF2 intensifies local Th2 differentiation in CRSwNP via positive feedback. Cell Commun Signal 2023; 21:345. [PMID: 38037054 PMCID: PMC10688075 DOI: 10.1186/s12964-023-01375-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Chronic rhinosinusitis with nasal polyps (CRSwNP) is a heterogeneous and common upper airway disease divided into various inflammatory endotypes. Recent epidemiological findings showed a T helper 2 (Th2)-skewed dominance in CRSwNP patients. Histone modification alterations can regulate transcriptional and translational expression, resulting in abnormal pathogenic changes and the occurrence of diseases. Trimethylation of histone H3 lysine 4 (H3K4me3) is considered an activator of gene expression through modulation of accessibility for transcription, which is closely related to CRSwNP. H3K4me3 levels in the human nasal epithelium may change under Th2-biased inflammatory conditions, resulting in exaggerated local nasal Th2 responses via the regulation of naïve CD4+ T-cell differentiation. Here, we revealed that the level of SET and MYND domain-containing protein 3 (SMYD3)-mediated H3K4me3 was increased in NPs from Th2 CRSwNP patients compared with those from healthy controls. We demonstrated that SMYD3-mediated H3K4me3 is increased in human nasal epithelial cells under Th2-biased inflammatory conditions via S-adenosyl-L-methionine (SAM) production and further found that the H3K4me3high status of insulin-like growth factor 2 (IGF2) produced in primary human nasal epithelial cells could promote naïve CD4+ T-cell differentiation into Th2 cells. Moreover, we found that SAM production was dependent on the c-Myc/methionine adenosyltransferase 2A (MAT2A) axis in the nasal epithelium. Understanding histone modifications in the nasal epithelium has immense potential utility in the development of novel classes of therapeutics targeting Th2 polarization in Th2 CRSwNP. Video Abstract.
Collapse
Affiliation(s)
- Lei Yu
- Department of Otolaryngology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Yi Wei
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
- Otorhinolaryngology Institute of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
- Guangzhou Key Laboratory of Otorhinolaryngology, Guangzhou, Guangdong, P.R. China
| | - Tong Lu
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Zhengqi Li
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Shimin Lai
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Yan Yan
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Changhui Chen
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Weiping Wen
- Department of Otolaryngology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China.
- Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China.
- Otorhinolaryngology Institute of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China.
- Guangzhou Key Laboratory of Otorhinolaryngology, Guangzhou, Guangdong, P.R. China.
| |
Collapse
|
2
|
Liu WN, Wu KX, Wang XT, Lin LR, Tong ML, Liu LL. LncRNA- ENST00000421645 promotes T cells to secrete IFN-γ by sponging PCM1 in neurosyphilis. Epigenomics 2021; 13:1187-1203. [PMID: 34382410 DOI: 10.2217/epi-2021-0163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: Neurosyphilis patients exhibited significant expression of long noncoding RNA (lncRNA) in peripheral blood T lymphocytes. In this study, we further clarified the role of lncRNA-ENST00000421645 in the pathogenic mechanism of neurosyphilis. Methods: lncRNA-ENST00000421645 was transfected into Jurkat-E6-1 cells, namely lentivirus (Lv)-1645 cells. RNA pull-down assay, flow cytometry, RT-qPCR, ELISA (Neobioscience Technology Co Ltd, Shenzhen, China) and RNA immunoprecipitation chip assay were used to analyze the function of lncRNA-ENST00000421645. Results: The expression of IFN-γ in Lv-1645 cells was significantly increased compared to that in Jurkat-E6-1 cells stimulated by phorbol-12-myristate-13-acetate (PMA). Then, it was suggested that lncRNA-ENST00000421645 interacts with PCM1 protein. Silencing PCM1 significantly increased the level of IFN-γ in Lv-1645 cells stimulated by PMA. Conclusion: This study revealed that lncRNA-ENST00000421645 mediates the production of IFN-γ by sponging PCM1 protein after PMA stimulation.
Collapse
Affiliation(s)
- Wen-Na Liu
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medical, Xiamen University, Xiamen, Fujian Province, China.,Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science & Technology of China, Chengdu, China
| | - Kai-Xuan Wu
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medical, Xiamen University, Xiamen, Fujian Province, China
| | - Xiao-Tong Wang
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medical, Xiamen University, Xiamen, Fujian Province, China
| | - Li-Rong Lin
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medical, Xiamen University, Xiamen, Fujian Province, China
| | - Man-Li Tong
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medical, Xiamen University, Xiamen, Fujian Province, China
| | - Li-Li Liu
- Center of Clinical Laboratory, Zhongshan Hospital, School of Medical, Xiamen University, Xiamen, Fujian Province, China
| |
Collapse
|
3
|
Eskandari S, Pattinson DJ, Stephenson RJ, Groves PL, Apte SH, Sedaghat B, Chandurudu S, Doolan DL, Toth I. Influence of Physicochemical Properties of Lipopeptide Adjuvants on the Immune Response: A Rationale for Engineering a Potent Vaccine. Chemistry 2018; 24:9892-9902. [PMID: 29707835 DOI: 10.1002/chem.201801378] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Indexed: 01/07/2023]
Abstract
Adjuvant development and understanding the physicochemical properties of particles and interpreting the subsequent immunological responses is a challenge faced by many researchers in the vaccine field. We synthesized and investigated the physicochemical properties and immunogenicity of a library of multiple epitope self-adjuvant lipopeptides in a novel asymmetric arrangement. Vaccine candidates were synthesized using a combination of solid-phase peptide synthesis and copper-mediated click chemistry. In vivo studies showed that vaccine constructs containing a single OVA CD8+ T-cell epitope and two N-terminally located C16 lipid moieties were more effective at generating robust cellular immune responses compared to the same molecule containing multiple copies of the OVA CD8+ T-cell epitope with or without the C16 moieties. Furthermore, attachment of the two C16 lipids to the N-terminus provoked formation of long β-sheet fibrils and was shown to induce a higher CD8+ donor T-cell frequency and IFN-γ secretion, compared to vaccine constructs with an internal lipid placement. A regression analysis indicated that particle secondary structure had a significant impact on CD8+ donor T-cell frequency and cytolytic activity. In addition, IFN-γ production was influenced significantly by particle shape. The findings of this research will impact the future design of a vaccine intended to elicit cellular immune responses.
Collapse
Affiliation(s)
- Sharareh Eskandari
- Institute for Glycomics, Griffith University, Gold coast, QLD 4222, Australia
| | - David J Pattinson
- QIMR Berghofer Medical Research Institute, 300 Herston Road, QIMR Locked Bag 2000, Royal Brisbane Hospital, Brisbane, QLD, 4029, Australia
| | - Rachel J Stephenson
- School of Chemistry and Molecular Biosciences, The University of Queensland Brisbane, QLD, 4072, Australia
| | - Penny L Groves
- QIMR Berghofer Medical Research Institute, 300 Herston Road, QIMR Locked Bag 2000, Royal Brisbane Hospital, Brisbane, QLD, 4029, Australia
| | - Simon H Apte
- QIMR Berghofer Medical Research Institute, 300 Herston Road, QIMR Locked Bag 2000, Royal Brisbane Hospital, Brisbane, QLD, 4029, Australia
| | - Bita Sedaghat
- School of Chemistry and Molecular Biosciences, The University of Queensland Brisbane, QLD, 4072, Australia
| | - Saranya Chandurudu
- School of Chemistry and Molecular Biosciences, The University of Queensland Brisbane, QLD, 4072, Australia
| | - Denise L Doolan
- QIMR Berghofer Medical Research Institute, 300 Herston Road, QIMR Locked Bag 2000, Royal Brisbane Hospital, Brisbane, QLD, 4029, Australia
- Centre for Biosecurity and Tropical Infectious Diseases, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, 4878, QLD, Australia
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences, The University of Queensland Brisbane, QLD, 4072, Australia
- School of Pharmacy, The University of Queensland, Brisbane, QLD, 4102, Australia
- Institute for Molecular Biosciences, The University of Queensland, St Lucia, QLD, 4072, Australia
| |
Collapse
|
4
|
Dillinger B, Ahmadi-Erber S, Lau M, Hoelzl MA, Erhart F, Juergens B, Fuchs D, Heitger A, Ladisch S, Dohnal AM. IFN-γ and tumor gangliosides: Implications for the tumor microenvironment. Cell Immunol 2018; 325:33-40. [PMID: 29402391 DOI: 10.1016/j.cellimm.2018.01.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/16/2018] [Accepted: 01/22/2018] [Indexed: 10/18/2022]
Abstract
Gangliosides shed by tumors into their microenvironment (TME) are immunoinhibitory. Interferon-γ (IFN-γ) may boost antitumor immune responses. Thus we wondered whether IFN-γ would counteract tumor ganglioside-mediated immune suppression. To test this hypothesis, we exposed human monocyte-derived LPS-activated dendritic cells (DC) to IFN-γ and to a highly purified ganglioside, GD1a. DC ganglioside exposure decreased TLR-dependent p38 signaling, explaining the previously observed ganglioside-induced down-modulation of pro-inflammatory surface markers and cytokines. Strikingly, while increasing LPS-dependent DC responses, IFN-γ unexpectedly did not counteract the inhibitory effects of GD1a. Rather, induction of indoleamine 2,3-dioxygenase (IDO1), and expression of STAT1/IRF-1 and programmed cell death ligand (PD-L1), indicated that the immunoinhibitory, not an immune stimulatory, IFN-γ-signaling axis, was active. The combination, IFN-γ and DC ganglioside enrichment, markedly impaired DC stimulatory potential of CD8+ T-cells. We suggest that gangliosides and IFN-γ may act in concert as immunosuppressive mediators in the TME, possibly promoting tumor progression.
Collapse
Affiliation(s)
- Barbara Dillinger
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Sarah Ahmadi-Erber
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Manuel Lau
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Markus A Hoelzl
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Friedrich Erhart
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Birgit Juergens
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter, Innsbruck Medical University, Innrain 80, Innsbruck, Austria
| | - Andreas Heitger
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria
| | - Stephan Ladisch
- Center for Cancer and Immunology Research, Children's Research Institute, Children's National Medical Center 111 Michigan Avenue, N.W., Washington, DC, USA.
| | - Alexander M Dohnal
- Tumor Immunology, Children's Cancer Research Institute, St. Anna Kinderkrebsforschung e.V., Zimmermannplatz 10, Vienna, Austria.
| |
Collapse
|
5
|
Daniotti JL, Lardone RD, Vilcaes AA. Dysregulated Expression of Glycolipids in Tumor Cells: From Negative Modulator of Anti-tumor Immunity to Promising Targets for Developing Therapeutic Agents. Front Oncol 2016; 5:300. [PMID: 26779443 PMCID: PMC4703717 DOI: 10.3389/fonc.2015.00300] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 12/14/2015] [Indexed: 12/14/2022] Open
Abstract
Glycolipids are complex molecules consisting of a ceramide lipid moiety linked to a glycan chain of variable length and structure. Among these are found the gangliosides, which are sialylated glycolipids ubiquitously distributed on the outer layer of vertebrate plasma membranes. Changes in the expression of certain species of gangliosides have been described to occur during cell proliferation, differentiation, and ontogenesis. However, the aberrant and elevated expression of gangliosides has been also observed in different types of cancer cells, thereby promoting tumor survival. Moreover, gangliosides are actively released from the membrane of tumor cells, having a strong impact on impairing anti-tumor immunity. Beyond the undesirable effects of gangliosides in cancer cells, a substantial number of cancer immunotherapies have been developed in recent years that have used gangliosides as the main target. This has resulted in successful immune cell- or antibody-responses against glycolipids, with promising results having been obtained in clinical trials. In this review, we provide a general overview on the metabolism of glycolipids, both in normal and tumor cells, as well as examining glycolipid-mediated immune modulation and the main successes achieved in immunotherapies using gangliosides as molecular targets.
Collapse
Affiliation(s)
- Jose Luis Daniotti
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC-CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba , Argentina
| | - Ricardo D Lardone
- Dirks/Dougherty Laboratory for Cancer Research, Department of Translational Immunology, John Wayne Cancer Institute at Providence Saint John's Health Center , Santa Monica, CA , USA
| | - Aldo A Vilcaes
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC-CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba , Argentina
| |
Collapse
|
6
|
Lee HC, Wondimu A, Liu Y, Ma JSY, Radoja S, Ladisch S. Ganglioside inhibition of CD8+ T cell cytotoxicity: interference with lytic granule trafficking and exocytosis. THE JOURNAL OF IMMUNOLOGY 2012; 189:3521-7. [PMID: 22956583 DOI: 10.4049/jimmunol.1201256] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Granule exocytosis-mediated cytotoxicity by CD8(+) CTL plays a crucial role in adaptive immunity to tumors and to intracellular pathogens. This T cell effector function has been shown to be defective in various murine tumor models and in human cancer. However, factors and their mechanisms that cause inhibition of CD8(+) T cell lytic function in tumor-bearing hosts remain to be fully defined. We postulate that gangliosides, highly expressed on tumor cell membranes, actively shed into the tumor microenvironment, and having well-established immunosuppressive properties, may be such a factor. We exposed primary mouse CD8(+) CTL to gangliosides derived from three sources (tumors and normal brain). This significantly inhibited cytotoxicity-mediated by granule exocytosis, that is, cytotoxicity of alloantigen-specific and polyclonal CD8(+) CTL in vitro. These molecules did not interfere with the interaction of CD8(+) T cells with their cognate targets. Rather, they inhibited lytic granule release in response both to TCR engagement and to stimuli that induce granule release in a nonpolarized manner. At the subcellular level, confocal microscopic imaging identified inhibition of polarization of lytic granules to the immunological synapse upon target cell recognition. Thus, tumor-shed gangliosides suppress lytic activity of CD8(+) T cells by a novel mechanism, that is, inhibition of trafficking of lytic granules in response to TCR engagement, as well as by interfering with the process of granule exocytosis in CD8(+) T cells.
Collapse
Affiliation(s)
- Hee Chul Lee
- Center for Cancer and Immunology Research, Children's Research Institute, Children's National Medical Center, Washington, DC 20010, USA
| | | | | | | | | | | |
Collapse
|
7
|
Jales A, Falahati R, Mari E, Stemmy EJ, Shen W, Southammakosane C, Herzog D, Ladisch S, Leitenberg D. Ganglioside-exposed dendritic cells inhibit T-cell effector function by promoting regulatory cell activity. Immunology 2010; 132:134-43. [PMID: 20875076 DOI: 10.1111/j.1365-2567.2010.03348.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Tumour pathogenesis is characterized by an immunosuppressive microenvironment that limits the development of effective tumour-specific immune responses. This is in part the result of tumour-dependent recruitment and activation of regulatory cells, such as myeloid-derived suppressor cells and regulatory T cells in the tumour microenvironment and draining lymph nodes. Shedding of gangliosides by tumour cells has immunomodulatory properties, suggesting that gangliosides may be a critical factor in initiating an immunosuppressive microenvironment. To better define the immunomodulatory properties of gangliosides on antigen-specific T-cell activation and development we have developed an in vitro system using ganglioside-treated murine bone-marrow-derived dendritic cells to prime and activate antigen-specific CD4(+) T cells from AND T-cell receptor transgenic mice. Using this system, ganglioside treatment promotes the development of a dendritic cell population characterized by decreased CD86 (B7-2) expression, and decreased interleukin-12 and interleukin-6 production. When these cells are used as antigen-presenting cells, CD4 T cells are primed to proliferate normally, but have a defect in T helper (Th) effector cell development. This defect in Th effector cell responses is associated with the development of regulatory T-cell activity that can suppress the activation of previously primed Th effector cells in a contact-dependent manner. In total, these data suggest that ganglioside-exposed dendritic cells promote regulatory T-cell activity that may have long-lasting effects on the development of tumour-specific immune responses.
Collapse
Affiliation(s)
- Alessandra Jales
- Department of Microbiology, Immunology, and Tropical Medicine, George Washington University School of Medicine, Washington DC, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Shen W, Stone K, Jales A, Leitenberg D, Ladisch S. Inhibition of TLR Activation and Up-Regulation of IL-1R-Associated Kinase-M Expression by Exogenous Gangliosides. THE JOURNAL OF IMMUNOLOGY 2008; 180:4425-32. [DOI: 10.4049/jimmunol.180.7.4425] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
9
|
de Leon J, Fernandez A, Clavell M, Labrada M, Bebelagua Y, Mesa C, Fernandez LE. Differential influence of the tumour-specific non-human sialic acid containing GM3 ganglioside on CD4+CD25- effector and naturally occurring CD4+CD25+ regulatory T cells function. Int Immunol 2008; 20:591-600. [DOI: 10.1093/intimm/dxn018] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
10
|
Park JE, Wu DY, Prendes M, Lu SX, Ragupathi G, Schrantz N, Chapman PB. Fine specificity of natural killer T cells against GD3 ganglioside and identification of GM3 as an inhibitory natural killer T-cell ligand. Immunology 2008; 123:145-55. [PMID: 18154620 DOI: 10.1111/j.1365-2567.2007.02760.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
GD3, a ganglioside expressed on melanoma, is the only tumour-associated glycolipid described to date that can induce a CD1d-restricted natural killer T (NKT)-cell response. We analysed the fine specificity of GD3-reactive NKT cells and discovered that immunization with GD3 induced two populations of GD3-reactive NKT cells. One population was CD4+ CD8- and was specific for GD3; the other population was CD4- CD8- and cross-reacted with GM3 in a CD1d-restricted manner, but did not cross-react with GM2, GD2, or lactosylceramide. This indicated that the T-cell receptors reacting with GD3 recognize glucose-galactose linked to at least one N-acetyl-neuraminic acid but will not accommodate a terminal N-acetylgalactosamine. Immunization with GM2, GM3, GD2, or lactosylceramide did not induce an NKT-cell response. Coimmunization of GM3-loaded antigen-presenting cells (APCs) with GD3-loaded APCs suppressed the NKT-cell response to GD3 in a CD1d-restricted manner. This suppressive effect was specific for GM3 and was a local effect lasting 2-4 days. In vitro, GM3-loaded APCs also suppressed the interleukin-4 response, but not the interferon-gamma response, of NKT cells to alpha-galactosylceramide. However, there was no effect on the T helper type 2 responses of conventional T cells. We found that this suppression was not mediated by soluble factors. We hypothesize that GM3 induces changes to the APC that lead to suppression of T helper type 2-like NKT-cell responses.
Collapse
Affiliation(s)
- Jun-Eui Park
- Department of Medicine, Swim Across America Laboratory, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | | | | | | | | | | | | |
Collapse
|
11
|
Connell TD. Cholera toxin, LT-I, LT-IIa and LT-IIb: the critical role of ganglioside binding in immunomodulation by type I and type II heat-labile enterotoxins. Expert Rev Vaccines 2007; 6:821-34. [PMID: 17931161 DOI: 10.1586/14760584.6.5.821] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The heat-labile enterotoxins expressed by Vibrio cholerae (cholera toxin) and Escherichia coli (LT-I, LT-IIa and LT-IIb) are potent systemic and mucosal adjuvants. Coadministration of the enterotoxins with a foreign antigen produces an augmented immune response to that antigen. Although each enterotoxin has potent adjuvant properties, the means by which the enterotoxins induce various immune responses are distinctive for each adjuvant. Various mutants have been engineered to dissect the functions of the enterotoxins required for their adjuvanticity. The capacity to strongly bind to one or more specific ganglioside receptors appears to drive the distinctive immunomodulatory properties associated with each enterotoxin. Mutant enterotoxins with ablated or altered ganglioside-binding affinities have been employed to investigate the role of gangliosides in enterotoxin-dependent immunomodulation.
Collapse
Affiliation(s)
- Terry D Connell
- School of Medicine and Biomedical Sciences, Department of Microbiology and Immunology, 138 Farber Hall, 3435 Main St, Buffalo, NY 14214, USA.
| |
Collapse
|
12
|
Radin NS. Allylic structures in cancer drugs and body metabolites that control cell life and death. Expert Opin Drug Discov 2007; 2:809-21. [DOI: 10.1517/17460441.2.6.809] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
13
|
Ségui B, Andrieu-Abadie N, Jaffrézou JP, Benoist H, Levade T. Sphingolipids as modulators of cancer cell death: potential therapeutic targets. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2006; 1758:2104-20. [PMID: 16925980 DOI: 10.1016/j.bbamem.2006.05.024] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2006] [Revised: 05/04/2006] [Accepted: 05/06/2006] [Indexed: 02/07/2023]
Abstract
Through modifications in the fine membrane structure, cell-cell or cell-matrix interactions, and/or modulation of intracellular signaling pathways, sphingolipids can affect the tumorigenic potential of numerous cell types. Whereas ceramide and its metabolites have been described as regulators of cell growth and apoptosis, these lipids as well as other sphingolipid molecules can modulate the ability of malignant cells to grow and resist anticancer treatments, and their susceptibility to non-apoptotic cell deaths. This review summarizes our current knowledge on the properties of sphingolipids in the regulation of cancer cell death and tumor development. It also provides an update on the potential perspectives of manipulating sphingolipid metabolism and using sphingolipid analogues in anticancer therapy.
Collapse
Affiliation(s)
- Bruno Ségui
- INSERM U.466, Laboratoire de Biochimie, Institut Louis Bugnard, Centre Hospitalier Universitaire de Rangueil, BP 84225, 31432 Toulouse Cedex 4, France
| | | | | | | | | |
Collapse
|
14
|
Bennaceur K, Popa I, Portoukalian J, Berthier-Vergnes O, Péguet-Navarro J. Melanoma-derived gangliosides impair migratory and antigen-presenting function of human epidermal Langerhans cells and induce their apoptosis. Int Immunol 2006; 18:879-86. [PMID: 16675488 DOI: 10.1093/intimm/dxl024] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Gangliosides are ubiquitous, membrane-associated, glycosphingolipids, the composition and production of which is altered in many tumour cells. They have been shown to inhibit the in vitro generation and differentiation of dendritic cells (DCs) from progenitors, but their effect on human tissue-residing DCs is yet to be investigated. In the present study, we analysed the effect of GM3 and GD3 gangliosides purified from human melanoma tumours on the phenotypic and functional maturation of human epidermal Langerhans cells (LCs), the first immune barrier against the tumour cells. We showed that both gangliosides impaired spontaneous LC maturation induced by a short in vitro culture, as assessed by significant down-regulation of co-stimulation (CD40, CD54, CD80, CD86) and maturation markers (CD83, CCR7), which correlated to an impaired ability of the cells to mount allogeneic T cell proliferation. Furthermore, the ganglioside-treated cells displayed less ability to migrate towards CCL19/macrophage inflammatory protein 3 beta, the chemokine that specifically binds CCR7 and mediates LC migration to lymph nodes. Lastly, we showed that both GM3 and GD3 gangliosides enhance LC spontaneous apoptosis. Globally, these in vitro results might explain, at least in part, the altered number and distribution of LCs in melanoma-bearing patients. They underscore a new mechanism for gangliosides to impede the host immune response by inducing LC dysfunction in the tumour microenvironment.
Collapse
Affiliation(s)
- Karim Bennaceur
- EA 37-32, Clinique Dermatologique, Pavillon R, Hôpital E. Herriot, Université Claude Bernard Lyon 1, 69437 Lyon Cedex 03, France
| | | | | | | | | |
Collapse
|