1
|
Wu H, Zhu X, Wu Z, Li P, Chen Y, Ye Y, Wang J, Zhou E, Yang Z. The release of FB 1-induced heterophil extracellular traps in chicken is dependent on autophagy and glycolysis. Poult Sci 2023; 102:102511. [PMID: 36805396 PMCID: PMC9969254 DOI: 10.1016/j.psj.2023.102511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/22/2023] Open
Abstract
Fumonisin B1 (FB1), a worldwide contaminating mycotoxin produced by Fusarium, poses a great threat to the poultry industry. It was reported that extracellular traps could be induced by FB1 efficiently in chickens. However, the relevance of autophagy and glycolysis in FB1-triggered heterophil extracellular trap (HET) formation is unclear. In this study, immunostaining revealed that FB1-induced HETs structures were composed of DNA coated with histones H3, and elastase, and that heterophils underwent LC3B-related autophagosome formation assembly driven by FB1. Western blotting showed that FB1 downregulated the phosphorylated phosphoinositide 3-kinase3-kinase (PI3K)/protein kinase B (AKT)/mechanistic target of rapamycin complex 1 (mTORC1) axis and raised the AMP-activated kinase α (AMPKα) activation protein. Furthermore, rapamycin- and 3-Methyladenine (3-MA)-treatments modulated FB1-triggered HET formation according to the pharmacological analysis. Further studies on energy metabolism showed that glucose/lactate transport and glycolysis inhibitors abated FB1-induced HETs. These results showed that FB1-induced HET formation might interact with the autophagy process and relied on glucose/monocarboxylic acid transporter 1 (MCT1) and glycolysis, reflecting chicken's early innate immune responses against FB1 intake.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Ershun Zhou
- College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, PR China.
| | | |
Collapse
|
2
|
He S, Gu C, Su T, Zhou C, Lhamo T, Draga D, Yin L, Qiu Q. Exploration of the Potential Mechanisms of Lingqihuangban Granule for Treating Diabetic Retinopathy Based on Network Pharmacology. Comb Chem High Throughput Screen 2023; 26:14-29. [PMID: 35392781 DOI: 10.2174/1386207325666220407112018] [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: 08/31/2021] [Revised: 12/15/2021] [Accepted: 01/19/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND The Lingqihuangban Granule (LQHBG), a remarkable Chinese herbal compound, has been used for decades to treat diabetic retinopathy (DR) in the Department of Ophthalmology, Shanghai General Hospital (National Clinical Research Center for Eye Diseases) with obvious effects. Through the method of network pharmacology, the present study constructed bioactive component-relative targets and protein-protein interaction network of the LQHBG and implemented gene function analysis and pathway enrichment of targets, discussing the mechanisms of traditional Chinese medicine LQHBG in treating DR. MATERIALS AND METHODS The bioactive ingredients of LQHBG were screened and obtained using TCMSP and ETCM databases, while the potential targets of bioactive ingredients were predicted by SwissTargetPrediction and ETCM databases. Compared with the disease target databases of TTD, Drugbank, OMIM and DisGeNET, the therapeutic targets of LQHBG for DR were extracted. Based on the DAVID platform, GO annotation and KEGG pathway analyses of key targets were explored, combined with the screening of core pathways on the Omicshare database and pathway annotation on the Reactome database. RESULTS A total of 357 bioactive components were screened from LQHBG, involving 86 possible targets of LQHBG treating DR. In the PPI network, INS and ALB were identified as key genes. The effective targets were enriched in multiple signaling pathways, such as PI3K/Akt and MAPK pathways. CONCLUSION This study revealed the possible targets and pathways of LQHBG treating DR, reflecting the characteristics of multicomponent, multitarget and multipathway treatment of a Chinese herbal compound, and provided new ideas for further discussion.
Collapse
Affiliation(s)
- Shuai He
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, PR China
| | - Chufeng Gu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, PR China
| | - Tong Su
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, PR China
| | - Chuandi Zhou
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, PR China
| | - Thashi Lhamo
- Department of Ophthalmology, Shigatse People's Hospital, Shigatse, Xizang, PR China
| | - Deji Draga
- Department of Ophthalmology, Shigatse People's Hospital, Shigatse, Xizang, PR China
| | - Lili Yin
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, PR China
| | - Qinghua Qiu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, PR China
- Department of Ophthalmology, Shigatse People's Hospital, Shigatse, Xizang, PR China
| |
Collapse
|
3
|
Ouro A, Correa-Paz C, Maqueda E, Custodia A, Aramburu-Núñez M, Romaus-Sanjurjo D, Posado-Fernández A, Candamo-Lourido M, Alonso-Alonso ML, Hervella P, Iglesias-Rey R, Castillo J, Campos F, Sobrino T. Involvement of Ceramide Metabolism in Cerebral Ischemia. Front Mol Biosci 2022; 9:864618. [PMID: 35531465 PMCID: PMC9067562 DOI: 10.3389/fmolb.2022.864618] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/11/2022] [Indexed: 12/12/2022] Open
Abstract
Ischemic stroke, caused by the interruption of blood flow to the brain and subsequent neuronal death, represents one of the main causes of disability in worldwide. Although reperfusion therapies have shown efficacy in a limited number of patients with acute ischemic stroke, neuroprotective drugs and recovery strategies have been widely assessed, but none of them have been successful in clinical practice. Therefore, the search for new therapeutic approaches is still necessary. Sphingolipids consist of a family of lipidic molecules with both structural and cell signaling functions. Regulation of sphingolipid metabolism is crucial for cell fate and homeostasis in the body. Different works have emphasized the implication of its metabolism in different pathologies, such as diabetes, cancer, neurodegeneration, or atherosclerosis. Other studies have shown its implication in the risk of suffering a stroke and its progression. This review will highlight the implications of sphingolipid metabolism enzymes in acute ischemic stroke.
Collapse
Affiliation(s)
- Alberto Ouro
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Clara Correa-Paz
- Translational Stroke Laboratory Group (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Elena Maqueda
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Antía Custodia
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Marta Aramburu-Núñez
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Daniel Romaus-Sanjurjo
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Adrián Posado-Fernández
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - María Candamo-Lourido
- Translational Stroke Laboratory Group (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Maria Luz Alonso-Alonso
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Pablo Hervella
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Ramón Iglesias-Rey
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - José Castillo
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Francisco Campos
- Translational Stroke Laboratory Group (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Tomás Sobrino
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| |
Collapse
|
4
|
Berkowitz L, Cabrera-Reyes F, Salazar C, Ryff CD, Coe C, Rigotti A. Sphingolipid Profiling: A Promising Tool for Stratifying the Metabolic Syndrome-Associated Risk. Front Cardiovasc Med 2022; 8:785124. [PMID: 35097004 PMCID: PMC8795367 DOI: 10.3389/fcvm.2021.785124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/21/2021] [Indexed: 11/24/2022] Open
Abstract
Metabolic syndrome (MetS) is a multicomponent risk condition that reflects the clustering of individual cardiometabolic risk factors related to abdominal obesity and insulin resistance. MetS increases the risk for cardiovascular diseases (CVD) and type 2 diabetes mellitus (T2DM). However, there still is not total clinical consensus about the definition of MetS, and its pathophysiology seems to be heterogeneous. Moreover, it remains unclear whether MetS is a single syndrome or a set of diverse clinical conditions conferring different metabolic and cardiovascular risks. Indeed, traditional biomarkers alone do not explain well such heterogeneity or the risk of associated diseases. There is thus a need to identify additional biomarkers that may contribute to a better understanding of MetS, along with more accurate prognosis of its various chronic disease risks. To fulfill this need, omics technologies may offer new insights into associations between sphingolipids and cardiometabolic diseases. Particularly, ceramides –the most widely studied sphingolipid class– have been shown to play a causative role in both T2DM and CVD. However, the involvement of simple glycosphingolipids remains controversial. This review focuses on the current understanding of MetS heterogeneity and discuss recent findings to address how sphingolipid profiling can be applied to better characterize MetS-associated risks.
Collapse
Affiliation(s)
- Loni Berkowitz
- Department of Nutrition, Diabetes and Metabolism & Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- *Correspondence: Loni Berkowitz
| | - Fernanda Cabrera-Reyes
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cristian Salazar
- Department of Nutrition, Diabetes and Metabolism & Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carol D. Ryff
- Institute on Aging, University of Wisconsin-Madison, Madison, WI, United States
| | - Christopher Coe
- Institute on Aging, University of Wisconsin-Madison, Madison, WI, United States
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism & Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
5
|
Yokoyama N, Hanafusa K, Hotta T, Oshima E, Iwabuchi K, Nakayama H. Multiplicity of Glycosphingolipid-Enriched Microdomain-Driven Immune Signaling. Int J Mol Sci 2021; 22:9565. [PMID: 34502474 PMCID: PMC8430928 DOI: 10.3390/ijms22179565] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/29/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Glycosphingolipids (GSLs), together with cholesterol, sphingomyelin (SM), and glycosylphosphatidylinositol (GPI)-anchored and membrane-associated signal transduction molecules, form GSL-enriched microdomains. These specialized microdomains interact in a cis manner with various immune receptors, affecting immune receptor-mediated signaling. This, in turn, results in the regulation of a broad range of immunological functions, including phagocytosis, cytokine production, antigen presentation and apoptosis. In addition, GSLs alone can regulate immunological functions by acting as ligands for immune receptors, and exogenous GSLs can alter the organization of microdomains and microdomain-associated signaling. Many pathogens, including viruses, bacteria and fungi, enter host cells by binding to GSL-enriched microdomains. Intracellular pathogens survive inside phagocytes by manipulating intracellular microdomain-driven signaling and/or sphingolipid metabolism pathways. This review describes the mechanisms by which GSL-enriched microdomains regulate immune signaling.
Collapse
Affiliation(s)
- Noriko Yokoyama
- Institute for Environmental and Gender-Specific Medicine, Juntendo University, Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; (N.Y.); (K.H.); (T.H.); (E.O.); (K.I.)
| | - Kei Hanafusa
- Institute for Environmental and Gender-Specific Medicine, Juntendo University, Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; (N.Y.); (K.H.); (T.H.); (E.O.); (K.I.)
| | - Tomomi Hotta
- Institute for Environmental and Gender-Specific Medicine, Juntendo University, Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; (N.Y.); (K.H.); (T.H.); (E.O.); (K.I.)
| | - Eriko Oshima
- Institute for Environmental and Gender-Specific Medicine, Juntendo University, Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; (N.Y.); (K.H.); (T.H.); (E.O.); (K.I.)
| | - Kazuhisa Iwabuchi
- Institute for Environmental and Gender-Specific Medicine, Juntendo University, Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; (N.Y.); (K.H.); (T.H.); (E.O.); (K.I.)
- Laboratory of Biochemistry, Juntendo University Faculty of Health Care and Nursing, Urayasu, Chiba 279-0023, Japan
- Infection Control Nursing, Juntendo University Graduate School of Health Care and Nursing, Urayasu, Chiba 279-0023, Japan
| | - Hitoshi Nakayama
- Institute for Environmental and Gender-Specific Medicine, Juntendo University, Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; (N.Y.); (K.H.); (T.H.); (E.O.); (K.I.)
- Laboratory of Biochemistry, Juntendo University Faculty of Health Care and Nursing, Urayasu, Chiba 279-0023, Japan
- Infection Control Nursing, Juntendo University Graduate School of Health Care and Nursing, Urayasu, Chiba 279-0023, Japan
| |
Collapse
|
6
|
Sadras V, Petri MA, Jones SR, Peterlin BL, Chatterjee S. Glycosphingolipid-associated β-1,4 galactosyltransferase is elevated in patients with systemic lupus erythematosus. Lupus Sci Med 2021; 7:7/1/e000368. [PMID: 32665303 PMCID: PMC7359192 DOI: 10.1136/lupus-2019-000368] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 05/30/2020] [Accepted: 06/04/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE β-1,4 galactosyltransferase-V (β-1,4 GalT-V) is an enzyme that synthesises a glycosphingolipid known as lactosylceramide, which has been implicated in general inflammation and atherosclerosis. We asked if β-1,4 GalT-V was present at elevated levels in patients with SLE, a disease which is associated with increased risk of atherosclerosis. METHODS In this case-control observational study, serum samples were obtained from patients with SLE who are part of the Johns Hopkins Lupus Cohort. Control serum samples were obtained from healthy adult community members recruited from the Baltimore area. All serum samples (n=50 in the SLE group and n=50 in the healthy control group) were analysed with enzyme-linked immunoassays. These assays used antibodies raised against antigens that enabled us to measure the absorbance of oxidised phosphocholines per apolipoprotein B-100 (ox-PC/apoB) and the concentration of lipoprotein(a) (Lp(a)) and β-1,4 GalT-V. RESULTS Absorbance of ox-PC/apoB and concentrations of Lp(a) and β-1,4 GalT-V were significantly higher in the SLE serum samples as compared with the control serum (p<0.0001). CONCLUSIONS We conclude that patients with SLE have elevated levels of β-1,4 GalT-V and ox-PC, which have previously been recognised as risk factors for atherosclerosis.
Collapse
Affiliation(s)
- Vignesh Sadras
- Department of Pediatrics, Johns Hopkins University, Baltimore, Maryland, USA
| | - Michelle A Petri
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Steven Richard Jones
- Heart and Vascular Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Barbara Lee Peterlin
- Lancaster General Health Physicians, Penn Medicine, Lancaster, Pennsylvania, USA
| | - Subroto Chatterjee
- Division of Pediatric Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
7
|
Chatterjee S, Balram A, Li W. Convergence: Lactosylceramide-Centric Signaling Pathways Induce Inflammation, Oxidative Stress, and Other Phenotypic Outcomes. Int J Mol Sci 2021; 22:ijms22041816. [PMID: 33673027 PMCID: PMC7917694 DOI: 10.3390/ijms22041816] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/02/2021] [Accepted: 02/06/2021] [Indexed: 12/19/2022] Open
Abstract
Lactosylceramide (LacCer), also known as CD17/CDw17, is a member of a large family of small molecular weight compounds known as glycosphingolipids. It plays a pivotal role in the biosynthesis of glycosphingolipids, primarily by way of serving as a precursor to the majority of its higher homolog sub-families such as gangliosides, sulfatides, fucosylated-glycosphingolipids and complex neutral glycosphingolipids—some of which confer “second-messenger” and receptor functions. LacCer is an integral component of the “lipid rafts,” serving as a conduit to transduce external stimuli into multiple phenotypes, which may contribute to mortality and morbidity in man and in mouse models of human disease. LacCer is synthesized by the action of LacCer synthase (β-1,4 galactosyltransferase), which transfers galactose from uridine diphosphate galactose (UDP-galactose) to glucosylceramide (GlcCer). The convergence of multiple physiologically relevant external stimuli/agonists—platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), stress, cigarette smoke/nicotine, tumor necrosis factor-α (TNF-α), and in particular, oxidized low-density lipoprotein (ox-LDL)—on β-1,4 galactosyltransferase results in its phosphorylation or activation, via a “turn-key” reaction, generating LacCer. This newly synthesized LacCer activates NADPH (nicotinamide adenine dihydrogen phosphate) oxidase to generate reactive oxygen species (ROS) and a highly “oxidative stress” environment, which trigger a cascade of signaling molecules and pathways and initiate diverse phenotypes like inflammation and atherosclerosis. For instance, LacCer activates an enzyme, cytosolic phospholipase A2 (cPLA2), which cleaves arachidonic acid from phosphatidylcholine. In turn, arachidonic acid serves as a precursor to eicosanoids and prostaglandin, which transduce a cascade of reactions leading to inflammation—a major phenotype underscoring the initiation and progression of several debilitating diseases such as atherosclerosis and cancer. Our aim here is to present an updated account of studies made in the field of LacCer metabolism and signaling using multiple animal models of human disease, human tissue, and cell-based studies. These advancements have led us to propose that previously unrelated phenotypes converge in a LacCer-centric manner. This LacCer synthase/LacCer-induced “oxidative stress” environment contributes to inflammation, atherosclerosis, skin conditions, hair greying, cardiovascular disease, and diabetes due to mitochondrial dysfunction. Thus, targeting LacCer synthase may well be the answer to remedy these pathologies.
Collapse
|
8
|
Bauset C, Gisbert-Ferrándiz L, Cosín-Roger J. Metabolomics as a Promising Resource Identifying Potential Biomarkers for Inflammatory Bowel Disease. J Clin Med 2021; 10:jcm10040622. [PMID: 33562024 PMCID: PMC7915257 DOI: 10.3390/jcm10040622] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/02/2021] [Accepted: 02/02/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a relapsing chronic disorder of the gastrointestinal tract characterized by disruption of epithelial barrier function and excessive immune response to gut microbiota. The lack of biomarkers providing early diagnosis or defining the status of the pathology difficulties an accurate assessment of the disease. Given the different metabolomic profiles observed in IBD patients, metabolomics may reveal prime candidates to be studied, which may help in understanding the pathology and identifying novel therapeutic targets. In this review, we summarize the most current advances describing the promising metabolites such as lipids or amino acids found through untargeted metabolomics from serum, faecal, urine and biopsy samples.
Collapse
Affiliation(s)
- Cristina Bauset
- Department of Pharmacology and CIBER, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain; (C.B.); (L.G.-F.)
| | - Laura Gisbert-Ferrándiz
- Department of Pharmacology and CIBER, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain; (C.B.); (L.G.-F.)
| | - Jesús Cosín-Roger
- Hospital Dr. Peset, Fundación para la Investigación Sanitaria y Biomédica de la Comunitat Valenciana, FISABIO, 46017 Valencia, Spain
- Correspondence: ; Tel.: +34-963851234
| |
Collapse
|
9
|
Daniluk U, Daniluk J, Kucharski R, Kowalczyk T, Pietrowska K, Samczuk P, Filimoniuk A, Kretowski A, Lebensztejn D, Ciborowski M. Untargeted Metabolomics and Inflammatory Markers Profiling in Children With Crohn's Disease and Ulcerative Colitis-A Preliminary Study. Inflamm Bowel Dis 2019; 25:1120-1128. [PMID: 30772902 DOI: 10.1093/ibd/izy402] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Metabolic profiling might be used to identify disease biomarkers. The aim of our study was to determine the usefulness of untargeted metabolomics analysis to detect differences in serum metabolites between newly diagnosed and untreated pediatric patients with Crohn's disease (CD) or ulcerative colitis (UC) in comparison with a control group (Ctr). Moreover, we investigated the potential of profiling metabolomics and inflammatory markers to improve the noninvasive diagnosis of CD and UC in children. METHODS Metabolic fingerprinting of serum samples was estimated with liquid chromatography coupled with mass spectrometry in children with CD (n = 9; median age, 14 years), UC (n = 10; median age, 13.5 years), and controls (n = 10; median age, 12.5 years). RESULTS The majority of chemically annotated metabolites belonged to phospholipids and were downregulated in CD and UC compared with the Ctr. Only 1 metabolite, lactosylceramide 18:1/16:0 (LacCer 18:1/16:0), significantly discriminated CD from UC patients. Interestingly, combining LacCer 18:1/16:0 with other inflammatory markers resulted in a significant increase in the area under the curve with the highest specificity and sensitivity. CONCLUSIONS Using serum untargeted metabolomics, we have shown that LacCer 18:1/16:0 is a very unique metabolite for CD patients.
Collapse
Affiliation(s)
- Urszula Daniluk
- Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, Bialystok, Poland
| | - Jaroslaw Daniluk
- Department of Gastroenterology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Rafal Kucharski
- Department of Gastroenterology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Tomasz Kowalczyk
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Karolina Pietrowska
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Paulina Samczuk
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Aleksandra Filimoniuk
- Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, Bialystok, Poland
| | - Adam Kretowski
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Dariusz Lebensztejn
- Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, Bialystok, Poland
| | - Michal Ciborowski
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| |
Collapse
|
10
|
Role of Bioactive Sphingolipids in Inflammation and Eye Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1161:149-167. [PMID: 31562629 DOI: 10.1007/978-3-030-21735-8_14] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Inflammation is a common underlying factor in a diversity of ocular diseases, ranging from macular degeneration, autoimmune uveitis, glaucoma, diabetic retinopathy and microbial infection. In addition to the variety of known cellular mediators of inflammation, such as cytokines, chemokines and lipid mediators, there is now considerable evidence that sphingolipid metabolites also play a central role in the regulation of inflammatory pathways. Various sphingolipid metabolites, such as ceramide (Cer), ceramide-1-phosphate (C1P), sphingosine-1-phosphate (S1P), and lactosylceramide (LacCer) can contribute to ocular inflammatory diseases through multiple pathways. For example, inflammation generates Cer from sphingomyelins (SM) in the plasma membrane, which induces death receptor ligand formation and leads to apoptosis of retinal pigment epithelial (RPE) and photoreceptor cells. Inflammatory stress by reactive oxygen species leads to LacCer accumulation and S1P secretion and induces proliferation of retinal endothelial cells and eventual formation of new vessels. In sphingolipid/lysosomal storage disorders, sphingolipid metabolites accumulate in lysosomes and can cause ocular disorders that have an inflammatory etiology. Sphingolipid metabolites activate complement factors in the immune-response mediated pathogenesis of macular degeneration. These examples highlight the integral association between sphingolipids and inflammation in ocular diseases.
Collapse
|
11
|
Albeituni S, Stiban J. Roles of Ceramides and Other Sphingolipids in Immune Cell Function and Inflammation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1161:169-191. [PMID: 31562630 DOI: 10.1007/978-3-030-21735-8_15] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ceramides are bioactive sphingolipids that support the structure of the plasma membrane and mediate numerous cell-signaling events in eukaryotic cells. The finding that ceramides act as second messengers transducing cellular signals has attracted substantial attention in several fields of Biology. Since all cells contain lipid plasma membranes, the impact of various ceramides, ceramide synthases, ceramide metabolites, and other sphingolipids has been implicated in a vast range of cellular functions including, migration, proliferation, response to external stimuli, and death. The roles of lipids in these functions widely differ among the diverse cell types. Herein, we discuss the roles of ceramides and other sphingolipids in mediating the function of various immune cells; particularly dendritic cells, neutrophils, and macrophages. In addition, we highlight the main studies describing effects of ceramides in inflammation, specifically in various inflammatory settings including insulin resistance, graft-versus-host disease, immune suppression in cancer, multiple sclerosis, and inflammatory bowel disease.
Collapse
Affiliation(s)
- Sabrin Albeituni
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Johnny Stiban
- Department of Biology and Biochemistry, Birzeit University, West Bank, Palestine.
| |
Collapse
|
12
|
Inhibition of glycosphingolipid synthesis reverses skin inflammation and hair loss in ApoE-/- mice fed western diet. Sci Rep 2018; 8:11463. [PMID: 30061606 PMCID: PMC6065400 DOI: 10.1038/s41598-018-28663-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 06/18/2018] [Indexed: 01/19/2023] Open
Abstract
Sphingolipids have been accorded numerous biological functions however, the effects of feeding a western diet (diet rich in cholesterol and fat) on skin phenotypes, and color is not known. Here, we observed that chronic high-fat and high-cholesterol diet intake in a mouse model of atherosclerosis (ApoE-/-) decreases the level of ceramides and glucosylceramide. At the expense of increased levels of lactosylceramide due to an increase in the expression of lactosylceramide synthase (GalT-V). This is accompanied with neutrophil infiltration into dermis, and enrichment of tumor necrosis factor-stimulated gene-6 (TSG-6) protein. This causes skin inflammation, hair discoloration and loss, in ApoE-/- mice. Conversely, inhibition of glycosphingolipid synthesis, by D-threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (D-PDMP), unbound or encapsulated in a biodegradable polymer (BPD) reversed these phenotypes. Thus, inhibition of glycosphingolipid synthesis represents a unique therapeutic approach relevant to human skin and hair Biology.
Collapse
|
13
|
Lactosylceramide-accumulation in lipid-rafts mediate aberrant-autophagy, inflammation and apoptosis in cigarette smoke induced emphysema. Apoptosis 2015; 20:725-39. [PMID: 25638276 DOI: 10.1007/s10495-015-1098-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ceramide-accumulation is known to be involved in the pathogenesis of chronic inflammatory lung diseases including cigarette smoke-induced emphysema (CS-emphysema) but the exact sphingolipid metabolite that initiates emphysema progression remains ambiguous. We evaluated here a novel role for the sphingolipid, lactosylceramide (LacCer), as a potential mechanism for pathogenesis of CS-emphysema. We assessed the expression of LacCer, and LacCer-dependent inflammatory, apoptosis and autophagy responses in lungs of mice exposed to CS, as well as peripheral lung tissues from COPD subjects followed by experimental analysis to verify the role of LacCer in CS-emphysema. We observed significantly elevated LacCer-accumulation in human COPD lungs with increasing severity of emphysema over non-emphysema controls. Moreover, increased expression of defective-autophagy marker, p62, in lung tissues of severe COPD subjects suggest that LacCer induced aberrant-autophagy may contribute to the pathogenesis of CS-emphysema. We verified that CS-extract treatment significantly induces LacCer-accumulation in both bronchial-epithelial cells (BEAS2B) and macrophages (Raw264.7) as a mechanism to initiate aberrant-autophagy (p62-accumulation) and apoptosis that was rescued by pharmacological inhibitor of LacCer-synthase. Further, we corroborated that CS exposure induces LacCer-accumulation in murine lungs that can be controlled by LacCer-synthase inhibitor. We propose LacCer-accumulation as a novel prognosticator of COPD-emphysema severity, and provide evidence on the therapeutic efficacy of LacCer-synthase inhibitor in CS induced COPD-emphysema.
Collapse
|
14
|
|
15
|
Peterlin BL, Mielke MM, Dickens AM, Chatterjee S, Dash P, Alexander G, Vieira RVA, Bandaru VVR, Dorskind JM, Tietjen GE, Haughey NH. Interictal, circulating sphingolipids in women with episodic migraine: A case-control study. Neurology 2015; 85:1214-23. [PMID: 26354990 DOI: 10.1212/wnl.0000000000002004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/06/2015] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To evaluate interictal, circulating sphingolipids in women migraineurs. METHODS In the fasting state, serum samples were obtained pain-free from 88 women with episodic migraine (EM; n=52) and from controls (n=36). Sphingolipids were detected and quantified by high-performance liquid chromatography coupled with tandem mass spectrometry using multiple reaction monitoring. Multivariate logistic regression was used to examine the association between serum sphingolipids and EM odds. A recursive partitioning decision tree based on the serum concentrations of 10 sphingolipids was used to determine the presence or absence of EM in a subset of participants. RESULTS Total ceramide (EM 6,502.9 ng/mL vs controls 10,518.5 ng/mL; p<0.0001) and dihydroceramide (EM 39.3 ng/mL vs controls 63.1 ng/mL; p<0.0001) levels were decreased in those with EM as compared with controls. Using multivariate logistic regression, each SD increase in total ceramide (odds ratio [OR] 0.07; 95% confidence interval [CI]: 0.02, 0.22; p<0.001) and total dihydroceramide (OR 0.05; 95% CI: 0.01, 0.21; p<0.001) levels was associated with more than 92% reduced odds of migraine. Although crude sphingomyelin levels were not different in EM compared with controls, after adjustments, every SD increase in the sphingomyelin species C18:0 (OR 4.28; 95% CI: 1.87, 9.81; p=0.001) and C18:1 (OR 2.93; 95% CI: 1.55, 5.54; p=0.001) was associated with an increased odds of migraine. Recursive portioning models correctly classified 14 of 14 randomly selected participants as EM or control. CONCLUSION These results suggest that sphingolipid metabolism is altered in women with EM and that serum sphingolipid panels may have potential to differentiate EM presence or absence. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that serum sphingolipid panels accurately distinguish women with migraine from women without migraine.
Collapse
Affiliation(s)
- B Lee Peterlin
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH.
| | - Michelle M Mielke
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Alex M Dickens
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Subroto Chatterjee
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Paul Dash
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Guillermo Alexander
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Rebeca V A Vieira
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Veera Venkata Ratnam Bandaru
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Joelle M Dorskind
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Gretchen E Tietjen
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Norman H Haughey
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| |
Collapse
|
16
|
Improved intervention of atherosclerosis and cardiac hypertrophy through biodegradable polymer-encapsulated delivery of glycosphingolipid inhibitor. Biomaterials 2015; 64:125-135. [PMID: 26111596 DOI: 10.1016/j.biomaterials.2015.06.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 05/28/2015] [Accepted: 06/01/2015] [Indexed: 01/22/2023]
Abstract
D-Threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (D-PDMP), a glycosphingolipid synthesis inhibitor, holds promise for the treatment of atherosclerosis and cardiac hypertrophy but rapid in vivo clearance has severely hindered translation to the clinic. To overcome this impediment, we used a materials-based delivery strategy wherein D-PDMP was encapsulated within a biodegradable polymer composed of poly ethylene glycol (PEG) and sebacic acid (SA). PEG-SA was formulated into nanoparticles that were doped with (125)I-labeled PEG to allow in vivo bio-distribution and release kinetics of D-PDMP to be determined by using γ-scintigraphy and subsequently, by mass spectrometry. Polymer-encapsulation increased the residence time of D-PDMP in the body of a treated mouse from less than one hour to at least four hours (and up to 48 h or longer). This substantially increased in vivo longevity provided by polymer encapsulation resulted in an order of magnitude gain in efficacy for interfering with atherosclerosis and cardiac hypertrophy in apoE-/- mice fed a high fat and high cholesterol (HFHC) diet. These results establish that D-PDMP encapsulated in a biodegradable polymer provides a superior mode of delivery compared to unconjugated D-PDMP by way of increased gastrointestinal absorption and increased residence time thus providing this otherwise rapidly cleared compound with therapeutic relevance in interfering with atherosclerosis, cardiac hypertrophy, and probably other diseases associated with the deleterious effects of abnormally high glycosphingolipid biosynthesis or deficient catabolism.
Collapse
|
17
|
Dudzik D, Revello R, Barbas C, Bartha JL. LC–MS-Based Metabolomics Identification of Novel Biomarkers of Chorioamnionitis and Its Associated Perinatal Neurological Damage. J Proteome Res 2015; 14:1432-44. [DOI: 10.1021/pr501087x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Danuta Dudzik
- CEMBIO
(Center for Metabolomics and Bioanalysis), Pharmacy Faculty, University San Pablo CEU, 28668 Madrid, Spain
| | - Rocio Revello
- Division
of Maternal and Fetal Medicine, University Hospital La Paz, 28046 Madrid, Spain
| | - Coral Barbas
- CEMBIO
(Center for Metabolomics and Bioanalysis), Pharmacy Faculty, University San Pablo CEU, 28668 Madrid, Spain
| | - Jose L. Bartha
- Division
of Maternal and Fetal Medicine, University Hospital La Paz, 28046 Madrid, Spain
| |
Collapse
|
18
|
New vis-tas in lactosylceramide research. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 842:127-38. [PMID: 25408340 DOI: 10.1007/978-3-319-11280-0_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
19
|
Homocysteine induces cerebral endothelial cell death by activating the acid sphingomyelinase ceramide pathway. Prog Neuropsychopharmacol Biol Psychiatry 2013; 45:21-7. [PMID: 23665108 DOI: 10.1016/j.pnpbp.2013.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 05/02/2013] [Accepted: 05/02/2013] [Indexed: 11/22/2022]
Abstract
Homocysteine (Hcy) levels may rise after a stroke, but the mechanism of Hcy-induced cerebral endothelial cell (CEC) dysfunction has not been explored. In this study we examined the role of the acid sphingomyelinase (Asm)-ceramide pathway in the molecular mechanism of Hcy-induced CEC dysfunction. Murine CECs were prepared from fresh mouse brains. CECs were treated with 50-500 μM Hcy and 30-100 μM C2-ceramide for 48 h. Sphingomyelinase assays were performed to determine Asm activity. Quantitative assessments of cell survival and death by the MTT reduction and LDH release were conducted. Treatment of murine CECs with Hcy and ceramide caused cell death in a dose-dependent manner as determined by LDH and MTT assays. 250 μM Hcy and 50 μM C2-ceramide caused 50% cell death. Hcy induced murine CEC death also occurred in a time-dependant manner with substantial cell death noted as early as 24h after Hcy exposure. C2-ceramide-induced murine CEC death occurred earlier than Hcy-induced cell death by about 18h. Hcy treatment increased Asm activity and intracellular ceramide accumulation. This study demonstrated that Hcy and C2-ceramide can cause murine CEC death. Hcy induces CEC death possibly by activating the Asm-ceramide pathway.
Collapse
|
20
|
Chatterjee S, Alsaeedi N. Lactosylceramide synthase as a therapeutic target to mitigate multiple human diseases in animal models. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 749:153-69. [PMID: 22695844 DOI: 10.1007/978-1-4614-3381-1_11] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Subroto Chatterjee
- Department of Pediatric Cardiology, Johns Hopkins University, Baltimore, MD 21287, USA.
| | | |
Collapse
|
21
|
Dihydroceramide desaturase and dihydrosphingolipids: debutant players in the sphingolipid arena. Prog Lipid Res 2011; 51:82-94. [PMID: 22200621 DOI: 10.1016/j.plipres.2011.12.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Sphingolipids are a wide family of lipids that share common sphingoid backbones, including (2S,3R)-2-amino-4-octadecane-1,3-diol (dihydrosphingosine) and (2S,3R,4E)-2-amino-4-octadecene-1,3-diol (sphingosine). The metabolism and biological functions of sphingolipids derived from sphingosine have been the subject of many reviews. In contrast, dihydrosphingolipids have received poor attention, mainly due to their supposed lack of biological activity. However, the reported biological effects of active site directed dihydroceramide desaturase inhibitors and the involvement of dihydrosphingolipids in the response of cells to known therapeutic agents support that dihydrosphingolipids are not inert but are in fact biologically active and underscore the importance of elucidating further the metabolic pathways and cell signaling networks involved in the biological activities of dihydrosphingolipids. Dihydroceramide desaturase is the enzyme involved in the conversion of dihydroceramide into ceramide and it is crucial in the regulation of the balance between sphingolipids and dihydrosphingolipids. Furthermore, given the enzyme requirement for O₂ and the NAD(P)H cofactor, the cellular redox balance and dihydroceramide desaturase activity may reciprocally influence each other. In this review both dihydroceramide desaturase and the biological functions of dihydrosphingolipids are addressed and perspectives on this field are discussed.
Collapse
|
22
|
Spinal ceramide and neuronal apoptosis in morphine antinociceptive tolerance. Neurosci Lett 2009; 463:49-53. [PMID: 19631718 DOI: 10.1016/j.neulet.2009.07.051] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2009] [Revised: 07/16/2009] [Accepted: 07/17/2009] [Indexed: 01/27/2023]
Abstract
Opiates, like morphine, are the most effective analgesics for treating acute and chronic severe pain, but their use is limited by the development of analgesic tolerance and hypersensitivity to innocuous and noxious stimuli. Because opioids are a mainstay of pain management, restoring their efficacy has great clinical importance. We have recently demonstrated that spinal ceramide, a sphingolipid signaling molecule plays a central role in the development of morphine antinociceptive tolerance. We now report that ceramide upregulation in dorsal horn tissues in response to chronic morphine administration is associated with significant neuronal apoptosis. Inhibition of ceramide biosynthesis attenuated both the increase in neuronal apoptosis and the development of antinociceptive tolerance. These findings indicate that spinal ceramide upregulation is a key pro-apoptotic event that occurs upstream of the development of morphine antinociceptive tolerance and support the rationale for development of inhibitors of ceramide biosynthesis as adjuncts to opiates for the management of chronic pain.
Collapse
|
23
|
Tang YD, Pandey A, Kolmakova A, Wang XT, Venkatraman SS, Chatterjee S, Boey FYC. Use of a novel anti-proliferative compound coated on a biopolymer to mitigate platelet-derived growth factor-induced proliferation in human aortic smooth muscle cells: comparison with sirolimus. Glycoconj J 2008; 26:721-32. [DOI: 10.1007/s10719-008-9192-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2008] [Revised: 09/07/2008] [Accepted: 09/08/2008] [Indexed: 10/21/2022]
|
24
|
The Yin and Yang of lactosylceramide metabolism: Implications in cell function. Biochim Biophys Acta Gen Subj 2008; 1780:370-82. [DOI: 10.1016/j.bbagen.2007.08.010] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2007] [Accepted: 08/13/2007] [Indexed: 11/18/2022]
|
25
|
Cho JY. Effect of L-cycloserine on cellular responses mediated by macrophages and T cells. Biol Pharm Bull 2007; 30:2105-12. [PMID: 17978484 DOI: 10.1248/bpb.30.2105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study, we examined the immunoregulatory roles of L-cycloserine (L-CS), a sphingolipid metabolism regulator with inhibitory activity of serine palmitoyltransferase (SPT), on immune responses mediated by monocytes/macrophages and T cells. Mitogenic responses of splenic lymphocytes induced by LPS, PHA, and Con A were very strongly suppressed by L-CS with IC(50) values ranging from 0.5 to 1 muM. In contrast, this compound less strongly blocked IL-2-induced CD8+ CTLL-2 cell proliferation with an IC(50) value of 540 muM. Interestingly, L-CS enhanced the number of IL-4-producing helper T cells, indicating the favored induction of Th2 condition. Although tumor necrosis factor (TNF)-alpha and nitric oxide (NO) production was not altered under 10% FCS condition, U937 cell-cell adhesion as well as the surface level of adhesion molecules (CD29 and CD98) were significantly suppressed by L-CS. In particular, reduced serum level (5%) under L-CS treatment strongly enhanced the production of TNF-alpha and the inhibitory potency of NO production and cell adhesion. Finally, sphingolipids (D-sphingosine and DL-dihydrosphingosine) did not remarkably abrogate L-CS-mediated T cell proliferation. Therefore our data suggest that de novo sphingolipid metabolism may represent an important aspect of immunomodulatory activities mediated by T cells and macrophages/monocytes, depending on serum level.
Collapse
Affiliation(s)
- Jae Youl Cho
- School of Bioscience and Biotechnology and Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, Korea.
| |
Collapse
|
26
|
Iwabuchi K, Prinetti A, Sonnino S, Mauri L, Kobayashi T, Ishii K, Kaga N, Murayama K, Kurihara H, Nakayama H, Yoshizaki F, Takamori K, Ogawa H, Nagaoka I. Involvement of very long fatty acid-containing lactosylceramide in lactosylceramide-mediated superoxide generation and migration in neutrophils. Glycoconj J 2007; 25:357-74. [PMID: 18041581 DOI: 10.1007/s10719-007-9084-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2007] [Revised: 10/16/2007] [Accepted: 11/01/2007] [Indexed: 01/12/2023]
Abstract
The neutral glycosphingolipid lactosylceramide (LacCer) forms lipid rafts (membrane microdomains) coupled with the Src family kinase Lyn on the plasma membranes of human neutrophils; ligand binding to LacCer activates Lyn, resulting in neutrophil functions, such as superoxide generation and migration (Iwabuchi and Nagaoka, Lactosylceramide-enriched glycosphingolipid signaling domain mediates superoxide generation from human neutrophils, Blood 100, 1454-1464, 2002 and Sato et al. Induction of human neutrophil chemotaxis by Candida albicans-derived beta-1,6-long glycoside side-chain-branched beta glycan, J. Leukoc. Biol. 84, 204-211, 2006). Neutrophilic differentiated HL-60 cells (D-HL-60 cells) express almost the same amount of LacCer as neutrophils. However, D-HL-60 cells do not have Lyn-associated LacCer-enriched lipid rafts and lack LacCer-mediated superoxide-generating and migrating abilities. Here, we examined the roles of LacCer molecular species of different fatty acid compositions in these processes. Liquid chromatography-mass spectrometry analyses revealed that the very long fatty acid C24:0 and C24:1 chains were the main components of LacCer (31.6% on the total fatty acid content) in the detergent-resistant membrane fraction (DRM) from neutrophil plasma membranes. In contrast, plasma membrane DRM of D-HL-60 cells included over 70% C16:0-LacCer, but only 13.6% C24-LacCer species. D-HL-60 cells loaded with C24:0 or C24:1-LacCer acquired LacCer-mediated migrating and superoxide-generating abilities, and allowed Lyn coimmunoprecipitation by anti-LacCer antibody. Lyn knockdown by siRNA completely abolished the effect of C24:1-LacCer loading on LacCer-mediated migration of D-HL-60 cells. Immunoelectron microscopy revealed that LacCer clusters were closely associated with Lyn molecules in neutrophils and C24:1-LacCer-loaded D-HL-60 cells, but not in D-HL-60 cells or C16:0-LacCer-loaded cells. Taken together, these observations suggest that LacCer species with very long fatty acids are specifically necessary for Lyn-coupled LacCer-enriched lipid raft-mediated neutrophil superoxide generation and migration.
Collapse
Affiliation(s)
- Kazuhisa Iwabuchi
- Institute for Environmental and Gender-specific Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Tomioka, Urayasu-shi, Chiba, 279-0021, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Won JS, Singh AK, Singh I. Lactosylceramide: a lipid second messenger in neuroinflammatory disease. J Neurochem 2007; 103 Suppl 1:180-91. [DOI: 10.1111/j.1471-4159.2007.04822.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
28
|
Abstract
Lactosylceramide (LacCer) is a member of the glycosphingolipid family which has been recently recognized as a signaling intermediate in the regulation of cell proliferation and cell adhesion. In this paper, we present our studies pointing to a potential role of LacCer in inducing apoptosis. In our studies we employed a human osteosarcoma cell line MG-63 (wild type, WT) and a neutral sphingomyelinase (N-SMase) deficient cell line CC derived from MG-63 (mutant) cells. We observed that WT cells were highly sensitive to tumor necrosis factor-alpha (TNF-alpha), ceramide and LacCer-induced apoptosis. In contrast, the mutant cells were insensitive to TNF-alpha-induced apoptosis as they did not generate ceramide and LacCer. However, the exogenous supply of ceramide and/or LacCer rendered the mutant cells apoptotic. Interestingly, preincubation of cells with D-threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (D-PDMP), an inhibitor of glucosylceramide synthase and lactosylceramide synthase, abrogated ceramide-induced apoptosis but not LacCer-induced apoptosis in both WT cells and the mutant cells. Moreover, TNF-alpha and LacCer-induced apoptosis required the generation of reactive oxygen species (ROS) in WT cells. However, since mutant cells did not produce significant amounts of LacCer and ROS in response to TNF-alpha treatment they are insensitive to TNF-alpha-induced apoptosis. In summary, our studies suggest that TNF-alpha-induced N-SMase activation and production of ceramide is required to activate the apoptosis pathway in human osteosarcoma cells. But it is not sufficient to induce apoptosis. Rather, the conversion of ceramide to LacCer and ROS generation are critical for apoptosis.
Collapse
Affiliation(s)
- Sergio F Martin
- Lipid Research Atherosclerosis Division, Johns Hopkins University, Baltimore, Maryland, USA
| | | | | |
Collapse
|
29
|
Bátkai S, Osei-Hyiaman D, Pan H, El-Assal O, Rajesh M, Mukhopadhyay P, Hong F, Harvey-White J, Jafri A, Haskó G, Huffman JW, Gao B, Kunos G, Pacher P. Cannabinoid-2 receptor mediates protection against hepatic ischemia/reperfusion injury. FASEB J 2007; 21:1788-800. [PMID: 17327359 PMCID: PMC2228252 DOI: 10.1096/fj.06-7451com] [Citation(s) in RCA: 190] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Hepatic ischemia-reperfusion (I/R) injury continues to be a fatal complication that can follow liver surgery or transplantation. We have investigated the involvement of the endocannabinoid system in hepatic I/R injury using an in vivo mouse model. Here we report that I/R triggers several-fold increases in the hepatic levels of the endocannabinoids anandamide and 2-arachidonoylglycerol, which originate from hepatocytes, Kupffer, and endothelial cells. The I/R-induced increased tissue endocannabinoid levels positively correlate with the degree of hepatic damage and serum TNF-alpha, MIP-1alpha, and MIP-2 levels. Furthermore, a brief exposure of hepatocytes to various oxidants (H2O2 and peroxynitrite) or inflammatory stimuli (endotoxin and TNF-alpha) also increases endocannabinoid levels. Activation of CB2 cannabinoid receptors by JWH133 protects against I/R damage by decreasing inflammatory cell infiltration, tissue and serum TNF-alpha, MIP-1alpha and MIP-2 levels, tissue lipid peroxidation, and expression of adhesion molecule ICAM-1 in vivo. JWH133 also attenuates the TNF-alpha-induced ICAM-1 and VCAM-1 expression in human liver sinusoidal endothelial cells (HLSECs) and the adhesion of human neutrophils to HLSECs in vitro. Consistent with the protective role of CB2 receptor activation, CB2-/- mice develop increased I/R-induced tissue damage and proinflammatory phenotype. These findings suggest that oxidative/nitrosative stress and inflammatory stimuli may trigger endocannabinoid production, and indicate that targeting CB2 cannabinoid receptors may represent a novel protective strategy against I/R injury. We also demonstrate that CB2-/- mice have a normal hemodynamic profile.
Collapse
Affiliation(s)
- Sándor Bátkai
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Douglas Osei-Hyiaman
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Hao Pan
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Osama El-Assal
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Mohanraj Rajesh
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Partha Mukhopadhyay
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Feng Hong
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Judith Harvey-White
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Anjum Jafri
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - György Haskó
- Department of Surgery, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey, USA
| | - John W. Huffman
- Howard L. Hunter Chemistry Laboratory, Clemson University, Clemson, South Carolina, USA
| | - Bin Gao
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - George Kunos
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Pál Pacher
- Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
- Correspondence: Section on Oxidative Stress and Tissue Injury, Laboratory of Physiologic Studies, National Institutes of Health/NIAAA, 5625 Fishers Lane, MSC-9413, Bethesda, Maryland 20892-9413, USA. E-mail:
| |
Collapse
|
30
|
Won JS, Singh I. Sphingolipid signaling and redox regulation. Free Radic Biol Med 2006; 40:1875-88. [PMID: 16716889 DOI: 10.1016/j.freeradbiomed.2006.01.035] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Revised: 01/25/2006] [Accepted: 01/28/2006] [Indexed: 01/09/2023]
Abstract
Sphingolipids including ceramide and its derivatives such as ceramide-1-phosphate, glycosyl-ceramide, and sphinogosine (-1-phosphate) are now recognized as novel intracellular signal mediators for regulation of inflammation, apoptosis, proliferation, and differentiation. One of the important and regulated steps in these events is the generation of these sphingolipids via hydrolysis of sphingomyelin through the action of sphingomyelinases (SMase). Several lines of evidence suggest that reactive oxygen species (ROS; O2-, H2O2, and OH-,) and reactive nitrogen species (RNS; NO, and ONOO-) and cellular redox potential, which is mainly regulated by cellular glutathione (GSH), are tightly linked to the regulation of SMase activation. On the other hand, sphingolipids are also known to play an important role in maintaining cellular redox homeostasis through regulation of NADPH oxidase, mitochondrial integrity, and antioxidant enzymes. Therefore, this paper reviews the relationship between cellular redox and sphingolipid metabolism and its biological significance.
Collapse
Affiliation(s)
- Je-Seong Won
- Division of Developmental Neurological Disorder in Charles P. Darby Children's Research Institute, Department of Pediatrics, Medical University of South Carolina, Room 505, 171 Ashley Avenue, Charleston, SC 29425, USA
| | | |
Collapse
|
31
|
Hůlková H, Ledvinová J, Asfaw B, Koubek K, Kopriva K, Elleder M. Lactosylceramide in lysosomal storage disorders: a comparative immunohistochemical and biochemical study. Virchows Arch 2005; 447:31-44. [PMID: 15918012 DOI: 10.1007/s00428-005-1246-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2004] [Accepted: 03/01/2005] [Indexed: 10/25/2022]
Abstract
Immunohistochemical studies of the presence of lactosylceramide (LacCer) in lysosomal storage disorders (LSDs) were done using anti-LacCer monoclonal antibody of the CDw 17 type (clone MG-2). No sign of an association between LacCer and the lysosomal system in normal cells was observed, except for histiocytes active in phagocytosis. A comparative study of a group of LSDs showed a general tendency for LacCer to increase in storage cells in Niemann-Pick disease type C (NPC), and types A and B, GM1 gangliosidosis, acid lipase deficiency, glycogen storage disease type II and mucopolysaccharidoses. LacCer accumulated in storage cells despite normal activity of relevant lysosomal degrading enzymes. The accumulation of LacCer displayed variability within storage cell populations, and was mostly expressed in neurons in NPC. An absence of the increase in LacCer in storage cells above control levels was seen in neuronal ceroid lipofuscinoses (neurons and cardiocytes) and in Fabry disease. Gaucher and Krabbe cells showed significantly lower levels, or even the absence, of LacCer compared with control macrophages. Results of immunohistochemistry were corroborated by semiquantitative lipid thin-layer chromatography (TLC). It is suggested that different associations of LacCer with the lysosomal storage process may reflect differences in glycosphingolipid turnover induced by the storage-compromised lysosomal/endosomal system.
Collapse
Affiliation(s)
- H Hůlková
- Institute of Inherited Metabolic Disorders, Charles University, First Faculty of Medicine and University Hospital, Ke Karlovu 2 128 08, 128 08, Prague 2, Czech Republic
| | | | | | | | | | | |
Collapse
|
32
|
Chatterjee S, Berliner JA, Subbanagounder GG, Bhunia AK, Koh S. Identification of a biologically active component in minimally oxidized low density lipoprotein (MM-LDL) responsible for aortic smooth muscle cell proliferation. Glycoconj J 2005; 20:331-8. [PMID: 15229397 DOI: 10.1023/b:glyc.0000033629.54962.68] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Although low concentrations (10 microg/ml) of oxidized LDL density lipoproteins (Ox-LDL) and minimally modified LDL (MM-LDL) can stimulate the proliferation of aortic smooth muscle cells the biologically active component responsible for this phenomena has not been identified. Here we report that the 1-palmitoyl-2-(5-oxovaleroyl)-sn-glycero-4-phosphocholine (m/e594.3) (POVPC) present in MM-LDL but not 1-palmitoyl-2-glutaryl-sn-glycero-3-phophochline (m/e610.2)(PGPC) can stimulate the activity of UDP-galactose:glucosylceramide (beta 1-->4) galactosyltransferase (GalT-2) and produce lactosyceramide (LacCer). LacCer, in turn, generated superoxide radicals (O(2)(.-)). This is accompanied by the phosphorylation/activation of a cytosolic transcriptional factor p(44) MAPK and the subsequent proliferation of human aortic smooth muscle cells. D-threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (D-PDMP), an inhibitor of GalT-2, impaired the induction of GalT-2 activity, O(2)(.-)generation, and cell proliferation. Thus POVPC may serve as a surrogate in MM-LDL mediated induction of aortic smooth muscle cells (A-SMC) proliferation via GalT-2 activation. The LacCer produced as a consequence of GalT-2 activation may serve as a lipid second messenger in the activation of an oxidant sensitive transcriptional pahtway that ultimately leads to cell proliferation and may contribute to the pathophysiology of atherosclerosis.
Collapse
Affiliation(s)
- Subroto Chatterjee
- Department of Pediatrics, Lipid Signaling and Vascular Biology Laboratory, Lipid Research-Atherosclerosis Division, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | | | | | | | | |
Collapse
|
33
|
Smoleńska-Sym G, Spychalska J, Zdebska E, Woźniak J, Traczyk Z, Pszenna E, Maj S, Danikiewicz W, Bieńkowski T, Kościelak J. Ceramides and glycosphingolipids in maturation process: leukemic cells as an experimental model. Blood Cells Mol Dis 2004; 33:68-76. [PMID: 15223014 DOI: 10.1016/j.bcmd.2004.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2004] [Indexed: 11/25/2022]
Abstract
Leukemic cells were used as experimental material to demonstrate changes in the content of GSLs during the development and maturation of neutrophils. The most abundant cellular GSL is LacCer. An elevation in the LacCer level occurs twice during the maturation process: initially, on formation of azurophil granules, and subsequently, (a more significant rise) on formation of specific granules. The formation of the latter is accompanied by an increase in the level of GalGalCer. During the maturation of myeloblasts, there is a simultaneous growth in the content of LacCer and GM3 as well as that of their common precursors, that is, free ceramides. Like other tumor cells, GM3 rich myeloblasts in the peripheral blood from patients with AML are characterized by shedding of gangliosides. The quantitative Cer/GlcCer ratio in these cells seems to be advantageous for the efficacy of chemotherapy in the induction of apoptosis. Myelo- and metamyelocytes achieve the highest level of GSLs. Their entry into the full maturity stage is accompanied by a decrease in the level of GSLs. Patterns of GSLs expression change greatly during development and maturation. However, with respect to the composition and content of GSLs, there are no significant differences between normal and leukemic mature neutrophils. At each stage of the development and maturation of myelogenous leukemic cells, as well as in normal mature neutrophils, there occurs the synthesis of the same molecular species both free ceramides and ceramide portions of LacCer, precursor of more complex GSLs.
Collapse
Affiliation(s)
- Gabriela Smoleńska-Sym
- Department of Biochemistry, Institute of Hematology and Blood Transfusion Warsaw, Poland.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Gong N, Wei H, Chowdhury SH, Chatterjee S. Lactosylceramide recruits PKCalpha/epsilon and phospholipase A2 to stimulate PECAM-1 expression in human monocytes and adhesion to endothelial cells. Proc Natl Acad Sci U S A 2004; 101:6490-5. [PMID: 15084746 PMCID: PMC404072 DOI: 10.1073/pnas.0308684101] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Despite the importance of platelet/endothelial cell adhesion molecule-1 (PECAM-1, CD31) in the adhesion and diapedesis of monocytes/lymphocytes, little is known about the mechanisms by which it is regulated. We explored the role of a glycosphingolipid, lactosylceramide (LacCer), in modulating PECAM-1 expression and cell adhesion in human monocytes. We observed that LacCer specifically exerted a time-dependent increase in PECAM-1 expression in U-937 cells. Maximal increase in PECAM-1 protein occurred after incubation with LacCer for 60 min. LacCer activated PKCalpha and -epsilon by translocating them from cytosol to membrane. This was accompanied by the activation of phospholipase A(2) (PLA(2)) and the increase of cell adhesion, which were abrogated by chelerythrine chloride, 2-[1-(3-dimethylaminopropyl)-1H-indol-3-yl]-3-(1H-indol-3-yl)-maleimide and 12-(2-cyanoethyl)-6,7,12,13-tetrahydro-13-methyl-5-oxo-5H-indolo(2,3-a)pyrrolo(3,4-c)-carbazole (GO 6976) (PKC inhibitors). Similarly, bromoenol lactone (a Ca(2+)-independent PLA(2) inhibitor) and methyl arachidonyl fluorophosphonate (an inhibitor of cytosolic PLA(2) and Ca(2+)-independent PLA(2)) inhibited LacCer-induced PLA(2) activity. Bromophenacyl bromide (a PLA(2) inhibitor) abrogated LacCer-induced PECAM-1 expression, and this was bypassed by arachidonic acid. Furthermore, the arachidonate-induced up-regulation of PECAM-1 was abrogated by indomethacin [a cyclooxygenase (COX)-1 and -2 inhibitor] or N-[2-(cyclohexyloxy)-4-nitrophenyl]-methanesulfonamide (a COX-2 inhibitor) but not nordihydroguaiaretic acid (a lipoxygenase inhibitor). In sum, PKCalpha/epsilon are the primary targets for the activation of LacCer. Downstream activation of intracellular Ca(2+)-independent PLA(2) and/or cytosolic PLA(2) results in the production of arachidonic acid, which in turn serves as a precursor for prostaglandins that subsequently stimulate PECAM-1 expression and cell adhesion. These findings may be relevant in explaining the role of LacCer in the regulation of PECAM-1 and related pathophysiology.
Collapse
Affiliation(s)
- NanLing Gong
- Johns Hopkins Singapore-National Heart Centre Vascular Biology Program, 41 Singapore Science Park II, Singapore 117610
| | | | | | | |
Collapse
|
35
|
Chatterjee S, Wei H. Roles of glycosphingolipids in cell signaling: adhesion, migration, and proliferation. Methods Enzymol 2003; 363:300-12. [PMID: 14579583 DOI: 10.1016/s0076-6879(03)01059-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Affiliation(s)
- Subroto Chatterjee
- Department of Pediatrics, Johns Hopkins University, 500 North Broadway, Suite 312, Baltimore, Maryland 21205, USA
| | | |
Collapse
|
36
|
Moore RM, Silver RJ, Moore JJ. Physiological apoptotic agents have different effects upon human amnion epithelial and mesenchymal cells. Placenta 2003; 24:173-80. [PMID: 12566244 DOI: 10.1053/plac.2002.0886] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Foetal membrane rupture is thought to follow from gene-controlled tissue remodelling and apoptosis. We reported previously that staurosporine, cycloheximide, actinomycin D, as well as more physiological apoptotic agents (lactosylceramide, 15d-PGJ(2)) increase prostaglandin release in parallel with induction of apoptosis in WISH and amnion epithelial cells. Also, inhibition of prostaglandin release by cyclooxygenase inhibitors or PKA activators is accompanied by a parallel decrease in apoptosis. We hypothesize that amnion prostaglandin metabolism is linked with apoptosis in amnion epithelial cells and thus to membrane rupture. Amnion mesenchymal cells are also critical for membrane integrity. Their susceptibility to apoptotic agents is unknown and is the subject of this report. In amnion epithelial cells, lactosylceramide (125 microM) induced 6.5-fold, 20-fold increases in PGE(2) and NMP production (apoptosis), respectively. Conversely, in mesenchymal cells, lactosylceramide doses up to 200 microM had no effect on PGE(2) or NMP release. In both cell types, incubation with 15d-PGJ(2) (5-100 microM) demonstrated dose and time dependent increases in PGE(2) and NMP. PKA activators inhibited 15d-PGJ(2) induced PGE(2) release and apoptotis in epithelial cells, but not in mesenchymal cells, however. Major amnion cell types have different sensitivities to physiological apoptotic agents. Prostaglandin release occurs coincident with apoptosis in both amnion epithelial and mesenchymal cells.
Collapse
Affiliation(s)
- R M Moore
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44109, USA
| | | | | |
Collapse
|
37
|
Cooling LLW, Zhang DS, Naides SJ, Koerner TAW. Glycosphingolipid expression in acute nonlymphocytic leukemia: common expression of shiga toxin and parvovirus B19 receptors on early myeloblasts. Blood 2003; 101:711-21. [PMID: 12393713 DOI: 10.1182/blood-2002-03-0718] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Glycosphingolipids (GSLs) are complex macromolecules on cell membranes that have been shown to play a role in neutrophil differentiation, activation, phagocytosis, and adhesion to both microorganisms and vascular endothelium. Because GSLs are often cryptic antigens on cell membranes, little is known regarding GSL expression in early myelopoiesis. To study the latter, myeloblasts were collected from patients with acute nonlymphocytic leukemia (ANLL) who required therapeutic leukocytopheresis for hyperleukocytosis. The neutral GSLs were isolated and identified by high-performance thin-layer chromatography (HPTLC), HPTLC immunostaining, gas chromatography, nuclear magnetic resonance, and fast atom bombardment-mass spectrometry. Like mature peripheral blood neutrophils, myeloblasts expressed glucosylceramide, lactosylceramide, and the neolacto-family GSLs, lactotriaosylceramide and neolactotetraosylceramide. Unlike neutrophils and chronic myeloid leukemia, most ANLL samples also expressed the globo-series GSLs, globotriaosylceramide and globotetraosylceramide. Globo GSL expression was strongly associated with a myeloblastic (ANLL M0-M2) and monoblastic phenotype (M5). A weak association was also noted with expression of either lymphoid (P <.10) or early hematopoietic markers (terminal deoxynucleotidyl transferase [TdT], CD34; P <.10). Globo-positive ANLL samples bound both shiga toxin and parvovirus B19 on HPTLC immunostaining. Based on these findings, we propose that neolacto and globo GSLs are expressed during early myeloid differentiation. Globotriaosylceramide expression on myeloblasts, and possibly myeloid stem cells, may have important implications for the use of shiga toxin as an ex vivo purging agent in autologous stem cell transplantation. Expression of globotetraosylceramide, the parvovirus B19 receptor, on myeloblasts may also explain the association between B19 infection, aplastic anemia, and chronic neutropenia of childhood.
Collapse
Affiliation(s)
- Laura L W Cooling
- Department of Pathology, The University of Michigan, Ann Arbor 48109, USA.
| | | | | | | |
Collapse
|
38
|
Sphingolipid metabolism and signaling in atherosclerosis. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1566-3124(03)12005-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
39
|
Affiliation(s)
- Sergio F Martin
- Department of Pediatrics, Johns Hopkins University, 500 North Broadway, Suite 312, Baltimore, Maryland 21205, USA
| | | |
Collapse
|
40
|
Abstract
This study is focused on the functional significance of neutrophil lactosylceramide (LacCer)–enriched microdomains, which are involved in the initiation of a signal transduction pathway leading to superoxide generation. Treatment of neutrophils with anti-LacCer antibody, T5A7 or Huly-m13, induced superoxide generation from the cells, which was blocked by PP1, a Src kinase inhibitor; wortmannin, a phosphatidylinositol-3 kinase inhibitor; SB203580, a p38 mitogen-activated protein kinase (MAPK) inhibitor; and H7, an inhibitor for protein kinase C. When promyelocytic leukemia HL-60 cells were differentiated into neutrophilic lineage by dimethyl sulfoxide (DMSO) treatment, they acquired superoxide-generating activity but did not respond to anti-LacCer antibodies. Density gradient centrifugation revealed that LacCer and Lyn were recovered in detergent-insoluble membrane (DIM) of neutrophils and DMSO-treated HL-60 cells. However, immunoprecipitation experiments indicated that LacCer was associated with Lyn in neutrophils but not in DMSO-treated HL-60 cells. Interestingly, T5A7 induced the phosphorylation of Lyn in neutrophils but not in DMSO-treated HL-60 cells. Moreover, T5A7 induced the phosphorylation of p38 MAPK in neutrophils. T5A7-induced Lyn phosphorylation in neutrophil DIM fraction was significantly enhanced by cholesterol depletion or sequestration with methyl-β-cyclodextrin or nystatin. Collectively, these data suggest that neutrophils are characterized by the presence of cell surface LacCer-enriched glycosphingolipid signaling domain coupled with Lyn and that the ligand binding to LacCer induces the activation of Lyn, which may be suppressibly regulated by cholesterol, leading to superoxide generation through the phosphatidylinositol-3 kinase–, p38 MAPK–, and protein kinase C–dependent signal transduction pathway.
Collapse
|
41
|
Van Heerebeek L, Meischl C, Stooker W, Meijer CJLM, Niessen HWM, Roos D. NADPH oxidase(s): new source(s) of reactive oxygen species in the vascular system? J Clin Pathol 2002; 55:561-8. [PMID: 12147646 PMCID: PMC1769734 DOI: 10.1136/jcp.55.8.561] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Reactive oxygen species play an important role in a variety of (patho)physiological vascular processes. Recent publications have produced evidence of a role for putative non-phagocyte NADP oxidase(s) in the vascular production of reactive oxygen species. In the present review, we discuss the detection of the different components of NADP oxidase(s) in the vascular system, together with the putative role of reactive oxygen species produced by vascular NADPH oxidase(s), in both in vitro and in vivo studies.
Collapse
Affiliation(s)
- L Van Heerebeek
- Institute of Cardiovascular Research, Free University Medical Center, Amsterdam, The Netherlands
| | | | | | | | | | | |
Collapse
|
42
|
Fuh KC, Meneshian A, Patel CB, Takiar V, Bulkley GB. Signal transduction by reactive oxygen species: alternative paradigms for signaling specificity. Surgery 2002; 131:601-12. [PMID: 12075172 DOI: 10.1067/msy.2002.123802] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Katherine C Fuh
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Md 21287-4685, USA
| | | | | | | | | |
Collapse
|
43
|
Janiszewski M, Souza HP, Liu X, Pedro MA, Zweier JL, Laurindo FRM. Overestimation of NADH-driven vascular oxidase activity due to lucigenin artifacts. Free Radic Biol Med 2002; 32:446-53. [PMID: 11864784 DOI: 10.1016/s0891-5849(01)00828-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several limitations have recently been described for lucigenin, a probe frequently used to assess the activity of vascular NAD(P)H oxidase, a major superoxide source. The preferential reducing substrate of such oxidase remains unclear. We assessed whether lucigenin artifacts could affect detection of NAD(P)H oxidase activity. Initial chemiluminescence assays were performed with vascular rings or homogenates at 5, 50, or 250 microM concentrations. Results showed preferential signals with NADPH (vs. NADH) with 5 and 50 microM lucigenin, which were blocked by diphenylene iodonium (DPI), superoxide dismutase (SOD), or its cell-permeable mimetic MnTBAP. With 250 microM lucigenin, the relative signal with NADH became larger than with NADPH, and was poorly inhibited by all three antagonists above. All SOD/DPI-resistant signals were effectively blocked by the electron acceptor nitrobluetetrazolium. Spin trapping with DMPO showed an approximate doubling of DMPO-OH radical adduct signal upon addition of 5 microM lucigenin to homogenates incubated with either NADPH or NADH. With 50 or 250 microM lucigenin, much larger increases were observed with NADH, as opposed to NADPH. Furthermore, oxygen consumption measurements showed analogous results. In summary, our data suggest that: (i) Lucigenin redox-cycling is detectable in vascular tissue even at 5 microM concentrations, while at 250 microM redox-cycling becomes predominant and is markedly increased when NADH is the assayed substrate; and (ii) With 250 microM lucigenin, preferentially with NADH, signals are further overestimated by direct, oxidase-dependent, superoxide-independent two-electron transfer. Therefore, previous reports of preferential NADH affinity of the vascular oxidase may have been due to these artifacts.
Collapse
Affiliation(s)
- Mariano Janiszewski
- Emergency Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | | | | | | | | |
Collapse
|
44
|
Wu SN, Lo YK, Kuo BI, Chiang HT. Ceramide inhibits the inwardly rectifying potassium current in GH(3) lactotrophs. Endocrinology 2001; 142:4785-94. [PMID: 11606445 DOI: 10.1210/endo.142.11.8508] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effects of ceramide on ion currents in rat pituitary GH(3) cells were investigated. Hyperpolarization-elicited K(+) currents present in GH(3) cells were studied to determine the effect of ceramide and other related compounds on the inwardly rectifying K(+) current (I(K(IR))). Ceramide (C(2)-ceramide) suppressed the amplitude of I(K(IR)) in a concentration-dependent manner, with an IC(50) value of 5 microM. Ceramide caused a rightward shift in the midpoint for the activation curve of I(K(IR)). Pretreatment with PD-98059 (30 microM) or U-0126 (30 microM) did not prevent ceramide-mediated inhibition of I(K(IR)). However, the magnitude of ceramide-induced inhibition of I(K(IR)) was attenuated in GH(3) cells preincubated with dithiothreitol (10 microM). TNF alpha (100 ng/g) also suppressed I(K(IR)). In the inside-out configuration, application of ceramide (30 microM) to the bath slightly suppressed the activity of large conductance Ca(2+)-activated K(+) channels. Under the current clamp mode, ceramide (10 microM) increased the firing of action potentials. Cells that exhibited an irregular firing pattern were converted to those displaying a regular firing pattern after application of ceramide (10 microM). Ceramide also suppressed I(K(IR)) in neuroblastoma IMR-32 cells. Therefore, ceramide can produce a depressant effect on I(K(IR)). The blockade of this current by ceramide may affect cell function.
Collapse
MESH Headings
- Action Potentials/drug effects
- Animals
- Butadienes/pharmacology
- Calcium/physiology
- Calcium Channels, L-Type/drug effects
- Calcium Channels, L-Type/physiology
- Ceramides/pharmacology
- Cytokines/pharmacology
- Dithiothreitol/pharmacology
- Electric Conductivity
- Enzyme Inhibitors/pharmacology
- Flavonoids/pharmacology
- Large-Conductance Calcium-Activated Potassium Channels
- Neuroblastoma/metabolism
- Neuroblastoma/pathology
- Nitriles/pharmacology
- Pituitary Gland, Anterior/cytology
- Pituitary Gland, Anterior/drug effects
- Pituitary Gland, Anterior/metabolism
- Potassium Channel Blockers
- Potassium Channels, Calcium-Activated
- Potassium Channels, Inwardly Rectifying/antagonists & inhibitors
- Potassium Channels, Inwardly Rectifying/drug effects
- Potassium Channels, Inwardly Rectifying/physiology
- Prolactin/metabolism
- Rats
- Tumor Cells, Cultured
Collapse
Affiliation(s)
- S N Wu
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan, Republic of China.
| | | | | | | |
Collapse
|
45
|
Andrieu-Abadie N, Gouazé V, Salvayre R, Levade T. Ceramide in apoptosis signaling: relationship with oxidative stress. Free Radic Biol Med 2001; 31:717-28. [PMID: 11557309 DOI: 10.1016/s0891-5849(01)00655-4] [Citation(s) in RCA: 206] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Ceramide is one of the major sphingosine-based lipid second messengers that is generated in response to various extracellular agents. However, while widespread attention has focused on ceramide as a second messenger involved in the induction of apoptosis, important issues with regard to the mechanisms of ceramide formation and mode of action remain to be addressed. Several lines of evidence suggest that ceramide and oxidative stress are intimately related in cell death induction. This review focuses on the putative relationships between oxidative stress and sphingolipid metabolism in the apoptotic process and discusses the potential mechanisms that connect and regulate the two phenomena.
Collapse
Affiliation(s)
- N Andrieu-Abadie
- INSERM Unit 466, Laboratoire de Biochimie Médicale, Centre Hospitalier Universitaire de Rangueil, Toulouse, France.
| | | | | | | |
Collapse
|
46
|
Arai T, Yoshikai Y, Kamiya J, Nagino M, Uesaka K, Yuasa N, Oda K, Sano T, Nimura Y. Bilirubin impairs bactericidal activity of neutrophils through an antioxidant mechanism in vitro. J Surg Res 2001; 96:107-13. [PMID: 11181003 DOI: 10.1006/jsre.2000.6061] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Liver failure accompanied by hyperbilirubinemia after major hepatic resection is profoundly associated with septic complications. Although the immune dysfunction in cholestasis has been intensively investigated, the contribution of increased serum bilirubin to the impaired resistance to bacterial infection remains to be elucidated. Because bilirubin possesses an antioxidant activity, we hypothesized that bilirubin may scavenge reactive oxygen species (ROS) produced by neutrophils and consequently impair neutrophil bacterial killing. To address this, we evaluated the effects of bilirubin on the bactericidal activity of ROS or of neutrophils in vitro. MATERIALS AND METHODS The antioxidant activity of bilirubin was determined using an ROS-sensitive fluorophore, dichlorofluorescin diacetate (DCFH-DA). Bilirubin concentration in the buffer solution was monitored spectorophotometrically after incubation with ROS. The effect of bilirubin on killing of Escherichia coli by ROS or by isolated human neutrophils was determined by counting the viable E. coli after incubation on nutrient agar. RESULTS The bilirubin concentration in the buffer solution was decreased by the addition of hydrogen peroxide, especially in the presence of peroxidase or ferrous iron. DCFH-DA oxidation by ROS or activated neutrophils was inhibited by bilirubin in a dose-dependent manner. The bactericidal activity of ROS or of isolated neutrophils was significantly attenuated by bilirubin. CONCLUSIONS Bilirubin impairs bactericidal activity of neutrophils through scavenging ROS. Increased levels of serum bilirubin may well be responsible for the impaired bacterial clearance in patients with hyperbilirubinemia.
Collapse
Affiliation(s)
- T Arai
- First Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
DeGraba T, Azhar S, Dignat-George F, Brown E, Bouti�re B, Altarescu G, McCarron R, Schiffmann R. Profile of endothelial and leukocyte activation in fabry patients. Ann Neurol 2001. [DOI: 10.1002/1531-8249(200002)47:2<229::aid-ana13>3.0.co;2-t] [Citation(s) in RCA: 150] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
48
|
Abstract
Adhesion assays are powerful tools to investigate the adhesive properties of cells. The quantification of cell adhesion enables determination of the capacity of cells to stick to a target, screening for novel adhesion involved binding molecules, exploration of structure-function relationships of adhesion molecules, evaluation of adhesion targets, and examination of compounds interfering with cell adhesion. Thus, quantification of cell adhesion needs simple and reliable methods that might be applied for both research and diagnostic purposes. This review presents methodological principles of enzymatic approaches for quantification of cell adhesion. In particular, the advantages of exogenous cell labelling with horseradish peroxidase are described.
Collapse
Affiliation(s)
- K Löster
- Institut für Molekularbiologie und Biochemie, Freie Universität Berlin, Germany.
| | | |
Collapse
|
49
|
Teixeira MM, Lindsay MA, Giembycz MA, Hellewell PG. Role of arachidonic acid in leukotriene B(4)-induced guinea-pig eosinophil homotypic aggregation. Eur J Pharmacol 1999; 384:183-90. [PMID: 10611440 DOI: 10.1016/s0014-2999(99)00697-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The activation of eosinophils with the lipid mediator, leukotriene B(4), induces their homotypic aggregation. Upon activation with leukotriene B(4), eosinophils release a significant amount of arachidonic acid, a process dependent on the activation of phospholipase A(2). Here, we have evaluated whether arachidonic acid could induce aggregation of eosinophils and whether the release of arachidonic acid mediated the aggregation induced by leukotriene B(4). The exogenous administration of arachidonic acid induced a concentration-dependent eosinophil homotypic aggregation. Pretreatment of eosinophils with a 5-lipoxygenase inhibitor or a leukotriene B(4) receptor antagonist abrogated arachidonic-acid-induced aggregation. Arachidonic acid induced a significant increase in leukotriene B(4) levels and desensitised leukotriene B(4)-induced aggregation in a dose-dependent manner. Moreover, this desensitisation was effectively reversed by a 5-lipoxygenase inhibitor. However, arachidonic acid failed to induce a rise in intracellular Ca(2+) in eosinophils and failed to desensitise these cells to rises in intracellular Ca(2+) induced by leukotriene B(4). Pretreatment of eosinophils with the phospholipase A(2) inhibitor, mepacrine, inhibited the aggregation responses induced by 1 nM leukotriene B(4) by approximately 50% but had no significant effect on the other concentrations of leukotriene B(4) tested (0.1 to 100 nM). In conclusion, arachidonic acid stimulates eosinophil aggregation indirectly via the release of leukotriene B(4). Although a significant amount of arachidonic acid is released in response to activation of eosinophils with leukotriene B(4), the arachidonic acid released does appear to play a major role in mediating leukotriene B(4)-induced eosinophil aggregation.
Collapse
Affiliation(s)
- M M Teixeira
- Laboratório de Imunofarmacologia, Departamento de Farmacologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627 Pampulha, Belo Horizonte, Brazil.
| | | | | | | |
Collapse
|
50
|
Takizawa M, Nomura T, Wakisaka E, Yoshizuka N, Aoki J, Arai H, Inoue K, Hattori M, Matsuo N. cDNA cloning and expression of human lactosylceramide synthase. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1438:301-4. [PMID: 10320813 DOI: 10.1016/s1388-1981(99)00051-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lactosylceramide synthase is an enzyme that catalyzes the transfer of galactose from UDP-Gal to glucosylceramide, and thus participates in the biosynthesis of most glycolipids in mammals. We have isolated and sequenced the cDNA clone encoding human lactosylceramide synthase. The deduced amino acid sequence of the human lactosylceramide synthase showed 94.2% identity with rat lactosylceramide synthase. Northern blotting analysis revealed that lactosylceramide synthase mRNA was expressed in various tissues, with the highest level in brain and adrenal gland.
Collapse
Affiliation(s)
- M Takizawa
- Biological Science Laboratories, Kao Corporation, 2606 Akabane, Ichikaimachi, Haga, Tochigi 321-3497, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|