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Kim SY, Cheon J. Senescence-associated microvascular endothelial dysfunction: A focus on the blood-brain and blood-retinal barriers. Ageing Res Rev 2024; 100:102446. [PMID: 39111407 DOI: 10.1016/j.arr.2024.102446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 07/05/2024] [Accepted: 08/02/2024] [Indexed: 08/17/2024]
Abstract
The blood-brain barrier (BBB) and blood-retinal barrier (BRB) constitute critical physiochemical interfaces, precisely orchestrating the bidirectional communication between the brain/retina and blood. Increased permeability or leakage of these barriers has been demonstrably linked to age-related vascular and parenchymal damage. While it has been suggested that the gradual aging process may coincide with disruptions in these barriers, this phenomenon is significantly exacerbated in individuals with age-related neurodegenerative disorders (ARND). This review focuses on the microvascular endothelium, a key constituent of BBB and BRB, highlighting the impact of endothelial senescence on barrier dysfunction and exploring recent discoveries regarding core pathways implicated in its breakdown. Subsequently, we address the "vascular senescence hypothesis" for ARND, with a particular emphasis on Alzheimer's disease and age-related macular degeneration, centered on endothelial senescence. Finally, we discuss potential senotherapeutic strategies targeting barrier dysfunction.
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Affiliation(s)
- Sung Young Kim
- Department of Biochemistry, Konkuk University School of Medicine, Republic of Korea; Research Institute of Medical Science, Konkuk University, Republic of Korea; IBST, Konkuk University, Republic of Korea.
| | - Jaejoung Cheon
- Department of Biochemistry, Konkuk University School of Medicine, Republic of Korea
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Russo T, Kolisnyk B, B. S. A, Plessis‐Belair J, Kim TW, Martin J, Ni J, Pearson JA, Park EJ, Sher RB, Studer L, Riessland M. The SATB1-MIR22-GBA axis mediates glucocerebroside accumulation inducing a cellular senescence-like phenotype in dopaminergic neurons. Aging Cell 2024; 23:e14077. [PMID: 38303548 PMCID: PMC11019121 DOI: 10.1111/acel.14077] [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: 08/03/2023] [Revised: 12/01/2023] [Accepted: 12/19/2023] [Indexed: 02/03/2024] Open
Abstract
Idiopathic Parkinson's disease (PD) is characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta, which is associated with neuroinflammation and reactive gliosis. The underlying cause of PD and the concurrent neuroinflammation are not well understood. In this study, we utilize human and murine neuronal lines, stem cell-derived dopaminergic neurons, and mice to demonstrate that three previously identified genetic risk factors for PD, namely SATB1, MIR22HG, and GBA, are components of a single gene regulatory pathway. Our findings indicate that dysregulation of this pathway leads to the upregulation of glucocerebrosides (GluCer), which triggers a cellular senescence-like phenotype in dopaminergic neurons. Specifically, we discovered that downregulation of the transcriptional repressor SATB1 results in the derepression of the microRNA miR-22-3p, leading to decreased GBA expression and subsequent accumulation of GluCer. Furthermore, our results demonstrate that an increase in GluCer alone is sufficient to impair lysosomal and mitochondrial function, thereby inducing cellular senescence. Dysregulation of the SATB1-MIR22-GBA pathway, observed in both PD patients and normal aging, leads to lysosomal and mitochondrial dysfunction due to the GluCer accumulation, ultimately resulting in a cellular senescence-like phenotype in dopaminergic neurons. Therefore, our study highlights a novel pathway involving three genetic risk factors for PD and provides a potential mechanism for the senescence-induced neuroinflammation and reactive gliosis observed in both PD and normal aging.
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Affiliation(s)
- Taylor Russo
- Department of Neurobiology and BehaviorStony Brook UniversityStony BrookNew YorkUSA
- Center for Nervous System DisordersStony Brook UniversityStony BrookNew YorkUSA
| | - Benjamin Kolisnyk
- Laboratory of Molecular and Cellular NeuroscienceThe Rockefeller UniversityNew YorkNew YorkUSA
| | - Aswathy B. S.
- Department of Neurobiology and BehaviorStony Brook UniversityStony BrookNew YorkUSA
- Center for Nervous System DisordersStony Brook UniversityStony BrookNew YorkUSA
| | - Jonathan Plessis‐Belair
- Department of Neurobiology and BehaviorStony Brook UniversityStony BrookNew YorkUSA
- Center for Nervous System DisordersStony Brook UniversityStony BrookNew YorkUSA
| | - Tae Wan Kim
- Center for Stem Cell BiologyMemorial Sloan‐Kettering Cancer CenterNew YorkNew YorkUSA
- Developmental Biology ProgramMemorial Sloan‐Kettering Cancer CenterNew YorkNew YorkUSA
| | - Jacqueline Martin
- Department of Neurobiology and BehaviorStony Brook UniversityStony BrookNew YorkUSA
- Center for Nervous System DisordersStony Brook UniversityStony BrookNew YorkUSA
| | - Jason Ni
- Laboratory of Molecular and Cellular NeuroscienceThe Rockefeller UniversityNew YorkNew YorkUSA
| | - Jordan A. Pearson
- Medical Scientist Training Program, Stony Brook University Renaissance School of MedicineStony Brook UniversityStony BrookNew YorkUSA
| | - Emily J. Park
- Stem Cells and Regenerative Medicine, Center for Cell and Gene Therapy, Department of Molecular and Cellular Biology and Dan L. Duncan Comprehensive Cancer CenterBaylor College of MedicineHoustonTexasUSA
| | - Roger B. Sher
- Department of Neurobiology and BehaviorStony Brook UniversityStony BrookNew YorkUSA
- Center for Nervous System DisordersStony Brook UniversityStony BrookNew YorkUSA
| | - Lorenz Studer
- Center for Stem Cell BiologyMemorial Sloan‐Kettering Cancer CenterNew YorkNew YorkUSA
- Developmental Biology ProgramMemorial Sloan‐Kettering Cancer CenterNew YorkNew YorkUSA
| | - Markus Riessland
- Department of Neurobiology and BehaviorStony Brook UniversityStony BrookNew YorkUSA
- Center for Nervous System DisordersStony Brook UniversityStony BrookNew YorkUSA
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3
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Russo T, Kolisnyk B, Aswathy BS, Wan Kim T, Martin J, Plessis-Belair J, Ni J, Pearson JA, Park EJ, Sher RB, Studer L, Riessland M. The SATB1-MIR22-GBA axis mediates glucocerebroside accumulation inducing a cellular senescence-like phenotype in dopaminergic neurons. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.19.549710. [PMID: 37503189 PMCID: PMC10370136 DOI: 10.1101/2023.07.19.549710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Idiopathic Parkinson's Disease (PD) is characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta, which is associated with neuroinflammation and reactive gliosis. The underlying cause of PD and the concurrent neuroinflammation are not well understood. In this study, we utilized human and murine neuronal lines, stem cell-derived dopaminergic neurons, and mice to demonstrate that three previously identified genetic risk factors for PD, namely SATB1, MIR22HG, and GBA, are components of a single gene regulatory pathway. Our findings indicate that dysregulation of this pathway leads to the upregulation of glucocerebrosides (GluCer), which triggers a cellular senescence-like phenotype in dopaminergic neurons. Specifically, we discovered that downregulation of the transcriptional repressor SATB1 results in the derepression of the microRNA miR-22-3p, leading to decreased GBA expression and subsequent accumulation of GluCer. Furthermore, our results demonstrate that an increase in GluCer alone is sufficient to impair lysosomal and mitochondrial function, thereby inducing cellular senescence dependent on S100A9 and stress factors. Dysregulation of the SATB1-MIR22-GBA pathway, observed in both PD patients and normal aging, leads to lysosomal and mitochondrial dysfunction due to the GluCer accumulation, ultimately resulting in a cellular senescence-like phenotype in dopaminergic neurons. Therefore, our study highlights a novel pathway involving three genetic risk factors for PD and provides a potential mechanism for the senescence-induced neuroinflammation and reactive gliosis observed in both PD and normal aging.
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Affiliation(s)
- Taylor Russo
- Department of Neurobiology and Behavior; Stony Brook University, Stony Brook, NY 11794, USA
- Center for Nervous System Disorders; Stony Brook University, Stony Brook, NY 11794, USA
| | - Benjamin Kolisnyk
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
| | - BS Aswathy
- Department of Neurobiology and Behavior; Stony Brook University, Stony Brook, NY 11794, USA
- Center for Nervous System Disorders; Stony Brook University, Stony Brook, NY 11794, USA
| | - Tae Wan Kim
- Center for Stem Cell Biology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
- Developmental Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Jacqueline Martin
- Department of Neurobiology and Behavior; Stony Brook University, Stony Brook, NY 11794, USA
- Center for Nervous System Disorders; Stony Brook University, Stony Brook, NY 11794, USA
| | - Jonathan Plessis-Belair
- Department of Neurobiology and Behavior; Stony Brook University, Stony Brook, NY 11794, USA
- Center for Nervous System Disorders; Stony Brook University, Stony Brook, NY 11794, USA
| | - Jason Ni
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
| | - Jordan A. Pearson
- Medical Scientist Training Program, Stony Brook University Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Emily J. Park
- Stem Cells and Regenerative Medicine, Center for Cell and Gene Therapy, Department of Molecular and Cellular Biology and Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Roger B. Sher
- Department of Neurobiology and Behavior; Stony Brook University, Stony Brook, NY 11794, USA
- Center for Nervous System Disorders; Stony Brook University, Stony Brook, NY 11794, USA
| | - Lorenz Studer
- Center for Stem Cell Biology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
- Developmental Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA
| | - Markus Riessland
- Department of Neurobiology and Behavior; Stony Brook University, Stony Brook, NY 11794, USA
- Center for Nervous System Disorders; Stony Brook University, Stony Brook, NY 11794, USA
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Di Pietro P, Izzo C, Abate AC, Iesu P, Rusciano MR, Venturini E, Visco V, Sommella E, Ciccarelli M, Carrizzo A, Vecchione C. The Dark Side of Sphingolipids: Searching for Potential Cardiovascular Biomarkers. Biomolecules 2023; 13:168. [PMID: 36671552 PMCID: PMC9855992 DOI: 10.3390/biom13010168] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/31/2022] [Accepted: 01/11/2023] [Indexed: 01/14/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of death and illness in Europe and worldwide, responsible for a staggering 47% of deaths in Europe. Over the past few years, there has been increasing evidence pointing to bioactive sphingolipids as drivers of CVDs. Among them, most studies place emphasis on the cardiovascular effect of ceramides and sphingosine-1-phosphate (S1P), reporting correlation between their aberrant expression and CVD risk factors. In experimental in vivo models, pharmacological inhibition of de novo ceramide synthesis averts the development of diabetes, atherosclerosis, hypertension and heart failure. In humans, levels of circulating sphingolipids have been suggested as prognostic indicators for a broad spectrum of diseases. This article provides a comprehensive review of sphingolipids' contribution to cardiovascular, cerebrovascular and metabolic diseases, focusing on the latest experimental and clinical findings. Cumulatively, these studies indicate that monitoring sphingolipid level alterations could allow for better assessment of cardiovascular disease progression and/or severity, and also suggest them as a potential target for future therapeutic intervention. Some approaches may include the down-regulation of specific sphingolipid species levels in the circulation, by inhibiting critical enzymes that catalyze ceramide metabolism, such as ceramidases, sphingomyelinases and sphingosine kinases. Therefore, manipulation of the sphingolipid pathway may be a promising strategy for the treatment of cardio- and cerebrovascular diseases.
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Affiliation(s)
- Paola Di Pietro
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | - Carmine Izzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | - Angela Carmelita Abate
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | - Paola Iesu
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | - Maria Rosaria Rusciano
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | | | - Valeria Visco
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | - Eduardo Sommella
- Department of Pharmacy, University of Salerno, 84084 Fisciano, Italy
| | - Michele Ciccarelli
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
| | - Albino Carrizzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
- Vascular Physiopathology Unit, IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Carmine Vecchione
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
- Vascular Physiopathology Unit, IRCCS Neuromed, 86077 Pozzilli, Italy
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Zhang J, Zhao Y, Sun Z, Sun T. Lacticaseibacillus rhamnosus Probio-M9 extends the lifespan of Caenorhabditis elegans. Commun Biol 2022; 5:1139. [PMID: 36302976 PMCID: PMC9613993 DOI: 10.1038/s42003-022-04031-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 09/23/2022] [Indexed: 11/24/2022] Open
Abstract
Probiotics have been characterized as useful for maintaining the balance of host gut flora and conferring health effects, but few studies have focused on their potential for delaying aging in the host. Here we show that Lacticaseibacillus rhamnosus Probio-M9 (Probio-M9), a healthy breast milk probiotic, enhances the locomotor ability and slows the decline in muscle function of the model organism Caenorhabditis elegans. Live Probio-M9 significantly extends the lifespan of C. elegans in a dietary restriction-independent manner. By screening various aging-related mutants of C. elegans, we find that Probio-M9 extends lifespan via p38 cascade and daf-2 signaling pathways, independent on daf-16 but dependent on skn-1. Probio-M9 protects and repairs damaged mitochondria by activating mitochondrial unfolded protein response. The significant increase of amino acids, sphingolipid, galactose and fatty acids in bacterial metabolites might be involved in extending the lifespan of C. elegans. We reveal that Probio-M9 as a dietary supplementation had the potential to delay aging in C. elegans and also provide new methods and insights for further analyzing probiotics in improving host health and delaying the occurrence of age-related chronic diseases.
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Affiliation(s)
- Juntao Zhang
- Inner Mongolia Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Yanmei Zhao
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhihong Sun
- Inner Mongolia Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Tiansong Sun
- Inner Mongolia Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
- Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
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Shen X, Zhang L, Jiang L, Xiong W, Tang Y, Lin L, Yu T. Alteration of sphingosine-1-phosphate with aging induces contractile dysfunction of colonic smooth muscle cells via Ca 2+ -activated K + channel (BK Ca ) upregulation. Neurogastroenterol Motil 2021; 33:e14052. [PMID: 33452855 DOI: 10.1111/nmo.14052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/13/2020] [Accepted: 11/13/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND Age-associated changes alter calcium-activated potassium channel (BKCa ) expression of colon. Sphingolipids (SLs) are important cell membrane structural components; altered composition of SLs may affect BKCa expression. This study investigated the mechanism by which sphingosine-1-phosphate (S1P) contributes to age-associated contractile dysfunction. METHODS Fifty male Sprague Dawley rats of different ages were randomly assigned to five age-groups, namely 3, 6, 12, 18, and 24 months. BKCa expression, S1P levels, and phosphorylated myosin light chain (p-MLC) levels were tested in colonic tissues. In the absence and presence of S1P treatment, BKCa expression, p-MLC levels, and intracellular calcium mobilization were tested in vitro. BKCa small interfering RNA (siRNA) was used to investigate whether p-MLC expression and calcium mobilization were affected by BKCa in colonic smooth muscle cells (SMCs). The expressions of phosphorylated protein kinase B, c-Jun N-terminal kinases (JNKs), extracellular-regulated protein kinases, nuclear factor kappa-B (NF-κB), and protein kinase Cζ (PKCζ ) were examined to investigate the correlation between S1P and BKCa . KEY RESULTS Sphingosine-1-phosphate levels and sphingosine-1-phosphate receptor 2 (S1PR2) and BKCa expressions were upregulated and p-MLC expression was downregulated in the colonic tissues, age dependently. In the cultured SMCs, S1P treatment increased BKCa expression and reduced calcium concentration and p-MLC was observed. BKCa siRNA increased calcium concentration, and p-MLC levels significantly compared with control. We also showed that S1P upregulated BKCa through PKCζ , JNK, and NF-κB pathways. CONCLUSIONS AND INFERENCES In conclusion, S1P and S1PR2 participate in age-associated contractile dysfunction via BKCa upregulation through PKCζ , JNK, and NF-κB pathways.
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Affiliation(s)
- Xiaoxue Shen
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ling Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ling Jiang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenjie Xiong
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yurong Tang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lin Lin
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ting Yu
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Mesa-Herrera F, Taoro-González L, Valdés-Baizabal C, Diaz M, Marín R. Lipid and Lipid Raft Alteration in Aging and Neurodegenerative Diseases: A Window for the Development of New Biomarkers. Int J Mol Sci 2019; 20:E3810. [PMID: 31382686 PMCID: PMC6696273 DOI: 10.3390/ijms20153810] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/1970] [Revised: 07/23/2019] [Accepted: 07/24/2019] [Indexed: 12/13/2022] Open
Abstract
Lipids in the brain are major components playing structural functions as well as physiological roles in nerve cells, such as neural communication, neurogenesis, synaptic transmission, signal transduction, membrane compartmentalization, and regulation of gene expression. Determination of brain lipid composition may provide not only essential information about normal brain functioning, but also about changes with aging and diseases. Indeed, deregulations of specific lipid classes and lipid homeostasis have been demonstrated in neurodegenerative disorders such as Alzheimer's disease (AD) and Parkinson's disease (PD). Furthermore, recent studies have shown that membrane microdomains, named lipid rafts, may change their composition in correlation with neuronal impairment. Lipid rafts are key factors for signaling processes for cellular responses. Lipid alteration in these signaling platforms may correlate with abnormal protein distribution and aggregation, toxic cell signaling, and other neuropathological events related with these diseases. This review highlights the manner lipid changes in lipid rafts may participate in the modulation of neuropathological events related to AD and PD. Understanding and characterizing these changes may contribute to the development of novel and specific diagnostic and prognostic biomarkers in routinely clinical practice.
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Affiliation(s)
- Fátima Mesa-Herrera
- Laboratory of Membrane Physiology and Biophysics, Department of Animal Biology, Edaphology and Geology
| | - Lucas Taoro-González
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, Section of Medicine, Faculty of Health Sciences, University of La Laguna, Sta. Cruz de Tenerife 38200, Spain
| | - Catalina Valdés-Baizabal
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, Section of Medicine, Faculty of Health Sciences, University of La Laguna, Sta. Cruz de Tenerife 38200, Spain
| | - Mario Diaz
- Laboratory of Membrane Physiology and Biophysics, Department of Animal Biology, Edaphology and Geology
- Associate Research Unit ULL-CSIC "Membrane Physiology and Biophysics in Neurodegenerative and Cancer Diseases", University of La Laguna, Sta. Cruz de Tenerife 38200, Spain
| | - Raquel Marín
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, Section of Medicine, Faculty of Health Sciences, University of La Laguna, Sta. Cruz de Tenerife 38200, Spain.
- Associate Research Unit ULL-CSIC "Membrane Physiology and Biophysics in Neurodegenerative and Cancer Diseases", University of La Laguna, Sta. Cruz de Tenerife 38200, Spain.
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Yagci ZB, Esvap E, Ozkara HA, Ulgen KO, Olmez EO. Inflammatory response and its relation to sphingolipid metabolism proteins: Chaperones as potential indirect anti-inflammatory agents. MOLECULAR CHAPERONES IN HUMAN DISORDERS 2019; 114:153-219. [DOI: 10.1016/bs.apcsb.2018.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Abstract
Nonalcoholic fatty liver disease (NAFLD) is a group of liver disorders encompassing simple hepatic steatosis and its more aggressive forms of nonalcoholic steatohepatitis and cirrhosis. It is a rapidly growing health concern and the major cause for the increasing incidence of primary liver tumors. Unequivocal evidence shows that sphingolipid metabolism is altered in the course of the disease and these changes might contribute to NAFLD progression. Recent data provide solid support to the notion that deregulated ceramide and sphingosine-1-phosphate metabolism are present at all stages of NAFLD, i.e., steatosis, nonalcoholic steatohepatitis, advanced fibrosis, and hepatocellular carcinoma (HCC). Insulin sensitivity, de novo lipogenesis, and the resulting lipotoxicity, fibrosis, and angiogenesis are all seemingly regulated in a manner that involves either ceramide and/or sphingosine-1-phosphate. Sphingolipids might also participate in the onset of hepatocellular senescence. The latter has been shown to contribute to the advancement of cirrhosis to HCC in the classical cases of end-stage liver disease, i.e., viral- or alcohol-induced; however, emerging evidence suggests that senescence is also involved in the pathogenicity of NAFLD possibly via changes in ceramide metabolism.
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Azuma MM, Balani P, Boisvert H, Gil M, Egashira K, Yamaguchi T, Hasturk H, Duncan M, Kawai T, Movila A. Endogenous acid ceramidase protects epithelial cells from Porphyromonas gingivalis-induced inflammation in vitro. Biochem Biophys Res Commun 2018; 495:2383-2389. [PMID: 29278706 PMCID: PMC5765770 DOI: 10.1016/j.bbrc.2017.12.137] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 12/22/2017] [Indexed: 01/08/2023]
Abstract
Ceramidases are a group of enzymes that degrade pro-inflammatory ceramide by cleaving a fatty acid to form anti-inflammatory sphingosine lipid. Thus far, acid, neutral and alkaline ceramidase isozymes have been described. However, the expression patterns of ceramidase isoforms as well as their role in periodontal disease pathogenesis remain unknown. In this study, expression patterns of ceramidase isoforms were quantified by real-time PCR and immunohistochemistry in gingival samples of patients with periodontitis and healthy subjects, as well as in EpiGingivalTM-3D culture and OBA-9 gingival epithelial cells both of which were stimulated with or without the presence of live Porphyromonas gingivalis (ATCC 33277 strain). A significantly lower level of acid ceramidase expression was detected in gingival tissues from periodontal patients compared to those from healthy subjects. In addition, acid-ceramidase expression in EpiGingival™ 3D culture and OBA-9 cells was suppressed by stimulation with P. gingivalis in vitro. No significant fluctuation was detected for neutral or alkaline ceramidases in either gingival samples or cell cultures. Next, to elucidate the role of acid ceramidase in P. gingivalis-induced inflammation in vitro, OBA-9 cells were transduced with adenoviral vector expressing the human acid ceramidase (Ad-ASAH1) gene or control adenoviral vector (Ad-control). In response to stimulation with P. gingivalis, ASAH1-over-expressing OBA-9 cells showed significantly lower mRNA expressions of caspase-3 as well as the percentage of Annexin V-positive cells, when compared with OBA-9 cells transduced with Ad-control vector. Furthermore, in response to stimulation with P. gingivalis, ASAH1-over-expressing OBA-9 cells produced less TNF-α, IL-6, and IL1β pro-inflammatory cytokines than observed in OBA-9 cells transduced with Ad-control vector. Collectively, our data show the novel discovery of anti-inflammatory and anti-apoptotic effects of acid ceramidase in host cells exposed to periodontal bacteria, and the attenuation of the expression of host-protective acid ceramidase in periodontal lesions.
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Affiliation(s)
| | - Pooja Balani
- The Forsyth Institute, Cambridge, MA, USA; Harvard University School of Dental Medicine, Boston, MA, USA
| | | | - Mindy Gil
- The Forsyth Institute, Cambridge, MA, USA; Harvard University School of Dental Medicine, Boston, MA, USA
| | - Kenji Egashira
- The Forsyth Institute, Cambridge, MA, USA; Lion Corporation, Research & Development Headquarter, Odawara, Kanagawa, Japan
| | - Tsuguno Yamaguchi
- The Forsyth Institute, Cambridge, MA, USA; Lion Corporation, Research & Development Headquarter, Odawara, Kanagawa, Japan
| | - Hatice Hasturk
- The Forsyth Institute, Cambridge, MA, USA; Harvard University School of Dental Medicine, Boston, MA, USA
| | | | - Toshihisa Kawai
- NOVA Southeastern University, College of Dental Medicine, Fort Lauderdale, FL, USA
| | - Alexandru Movila
- The Forsyth Institute, Cambridge, MA, USA; Harvard University School of Dental Medicine, Boston, MA, USA; NOVA Southeastern University, College of Dental Medicine, Fort Lauderdale, FL, USA.
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11
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James EL, Lane JAE, Michalek RD, Karoly ED, Parkinson EK. Replicatively senescent human fibroblasts reveal a distinct intracellular metabolic profile with alterations in NAD+ and nicotinamide metabolism. Sci Rep 2016; 6:38489. [PMID: 27924925 PMCID: PMC5141431 DOI: 10.1038/srep38489] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 11/11/2016] [Indexed: 12/30/2022] Open
Abstract
Cellular senescence occurs by proliferative exhaustion (PEsen) or following multiple cellular stresses but had not previously been subject to detailed metabolomic analysis. Therefore, we compared PEsen fibroblasts with proliferating and transiently growth arrested controls using a combination of different mass spectroscopy techniques. PEsen cells showed many specific alterations in both the NAD+ de novo and salvage pathways including striking accumulations of nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR) in the amidated salvage pathway despite no increase in nicotinamide phosphoribosyl transferase or in the NR transport protein, CD73. Extracellular nicotinate was depleted and metabolites of the deamidated salvage pathway were reduced but intracellular NAD+ and nicotinamide were nevertheless maintained. However, sirtuin 1 was downregulated and so the accumulation of NMN and NR was best explained by reduced flux through the amidated arm of the NAD+ salvage pathway due to reduced sirtuin activity. PEsen cells also showed evidence of increased redox homeostasis and upregulated pathways used to generate energy and cellular membranes; these included nucleotide catabolism, membrane lipid breakdown and increased creatine metabolism. Thus PEsen cells upregulate several different pathways to sustain their survival which may serve as pharmacological targets for the elimination of senescent cells in age-related disease.
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Affiliation(s)
- Emma L James
- Centre for Clinical &Diagnostic Oral Sciences, Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK
| | - James A E Lane
- Centre for Clinical &Diagnostic Oral Sciences, Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK
| | - Ryan D Michalek
- Metabolon, Inc. 617 Davis Drive, Suite 400, Durham, NC, 27713, USA
| | - Edward D Karoly
- Metabolon, Inc. 617 Davis Drive, Suite 400, Durham, NC, 27713, USA
| | - E Kenneth Parkinson
- Centre for Clinical &Diagnostic Oral Sciences, Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK
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12
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Cutler RG, Thompson KW, Camandola S, Mack KT, Mattson MP. Sphingolipid metabolism regulates development and lifespan in Caenorhabditis elegans. Mech Ageing Dev 2014; 143-144:9-18. [PMID: 25437839 DOI: 10.1016/j.mad.2014.11.002] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 11/26/2014] [Accepted: 11/27/2014] [Indexed: 01/19/2023]
Abstract
Sphingolipids are a highly conserved lipid component of cell membranes involved in the formation of lipid raft domains that house many of the receptors and cell-to-cell signaling factors involved in regulating cell division, maturation, and terminal differentiation. By measuring and manipulating sphingolipid metabolism using pharmacological and genetic tools in Caenorhabditis elegans, we provide evidence that the synthesis and remodeling of specific ceramides (e.g., dC18:1-C24:1), gangliosides (e.g., GM1-C24:1), and sphingomyelins (e.g., dC18:1-C18:1) influence development rate and lifespan. We found that the levels of fatty acid chain desaturation and elongation in many sphingolipid species increased during development and aging, with no such changes in developmentally-arrested dauer larvae or normal adults after food withdrawal (an anti-aging intervention). Pharmacological inhibitors and small interfering RNAs directed against serine palmitoyl transferase and glucosylceramide synthase acted to slow development rate, extend the reproductive period, and increase lifespan. In contrast, worms fed an egg yolk diet rich in sphingolipids exhibited accelerated development and reduced lifespan. Our findings demonstrate that sphingolipid accumulation and remodeling are critical events that determine development rate and lifespan in the nematode model, with both development rate and aging being accelerated by the synthesis of sphingomyelin, and its metabolism to ceramides and gangliosides.
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Affiliation(s)
- Roy G Cutler
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Kenneth W Thompson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Simonetta Camandola
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Kendra T Mack
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Baltimore, MD 21224, USA; Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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13
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Ageing, adipose tissue, fatty acids and inflammation. Biogerontology 2014; 16:235-48. [PMID: 25367746 DOI: 10.1007/s10522-014-9536-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 10/20/2014] [Indexed: 12/22/2022]
Abstract
A common feature of ageing is the alteration in tissue distribution and composition, with a shift in fat away from lower body and subcutaneous depots to visceral and ectopic sites. Redistribution of adipose tissue towards an ectopic site can have dramatic effects on metabolic function. In skeletal muscle, increased ectopic adiposity is linked to insulin resistance through lipid mediators such as ceramide or DAG, inhibiting the insulin receptor signalling pathway. Additionally, the risk of developing cardiovascular disease is increased with elevated visceral adipose distribution. In ageing, adipose tissue becomes dysfunctional, with the pathway of differentiation of preadipocytes to mature adipocytes becoming impaired; this results in dysfunctional adipocytes less able to store fat and subsequent fat redistribution to ectopic sites. Low grade systemic inflammation is commonly observed in ageing, and may drive the adipose tissue dysfunction, as proinflammatory cytokines are capable of inhibiting adipocyte differentiation. Beyond increased ectopic adiposity, the effect of impaired adipose tissue function is an elevation in systemic free fatty acids (FFA), a common feature of many metabolic disorders. Saturated fatty acids can be regarded as the most detrimental of FFA, being capable of inducing insulin resistance and inflammation through lipid mediators such as ceramide, which can increase risk of developing atherosclerosis. Elevated FFA, in particular saturated fatty acids, maybe a driving factor for both the increased insulin resistance, cardiovascular disease risk and inflammation in older adults.
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14
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Leucht K, Fischbeck A, Caj M, Liebisch G, Hartlieb E, Benes P, Fried M, Humpf HU, Rogler G, Hausmann M. Sphingomyelin and phosphatidylcholine contrarily affect the induction of apoptosis in intestinal epithelial cells. Mol Nutr Food Res 2013; 58:782-98. [PMID: 24142587 DOI: 10.1002/mnfr.201300369] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 08/14/2013] [Accepted: 08/20/2013] [Indexed: 12/22/2022]
Abstract
SCOPE The major alimentary sources for the plasma membrane lipid sphingomyelin (SM) are dairy products, eggs, and meat. We recently reported that the SM metabolite ceramide induces cathepsin D mediated apoptosis in murine intestinal epithelial cells (IECs) and increases inflammation in acute colitis. We investigated the impact of SM and phosphatidylcholine on apoptosis in human IECs and point out BH3-interacting death agonist (BID) as link between cathepsin D and apoptosis. METHODS AND RESULTS HT-29 and isolated human IECs were stimulated with SM or phosphatidylcholine. SM treatment resulted in increased apoptosis. Phosphatidylcholine showed contrary effects. Western revealed higher amounts of cathepsin D and BID activation upon lipid stimulation. Western blotting revealed BID activation through SM in both an induced and a spontaneous mouse model of colitis. CONCLUSION Dietary phospholipids may induce or abolish apoptosis in IECs and seem to play a role in the pathogenesis of inflammatory bowel diseases. This nutritional factor might be considered when evaluating the pathogenesis of inflammatory bowel diseases. Effects of SMase- and SM treatment on inflammation in dextran sulfate sodium induced animal models of colitis and in vitro experiments are discussed as controversial. Variable sources of SM, feeding techniques, and mouse strains might play a role.
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Affiliation(s)
- Katharina Leucht
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University Hospital Zurich, Switzerland
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15
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Metabolic changes during cellular senescence investigated by proton NMR-spectroscopy. Mech Ageing Dev 2013; 134:130-8. [PMID: 23416267 DOI: 10.1016/j.mad.2013.02.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/10/2012] [Accepted: 02/02/2013] [Indexed: 11/21/2022]
Abstract
Cellular senescence is of growing interest due to its role in tumour suppression and its contribution to organismic ageing. This cellular state can be reached by replicative loss of telomeres or certain stresses in cell culture and is characterized by the termination of cell division; however, the cells remain metabolically active. To identify metabolites that are characteristic for senescent cells, extracts of human embryonic lung fibroblast (WI-38 cell line) have been investigated with NMR spectroscopy. Three different types of senescence have been characterized: replicative senescence, DNA damage-induced senescence (etoposide treatment) and oncogene-induced senescence (hyperactive RAF kinase). The metabolite pattern allows (I) discrimination of senescent and control cells and (II) discrimination of the three senescence types. Senescent cells show an increased ratio of glycerophosphocholine to phosphocholine independent from the type of senescence. The increase in glycerophosphocholine implicates a key role of phospholipid metabolism in cellular senescence. The observed changes in the choline metabolism are diametrically opposite to the well-known changes in choline metabolism of tumour cells. As tumours responding to chemotherapeutic agents show a "glycerophosphocholine-to-phosphocholine switch" i.e. an increase in glycerophosphocholine, our metabolic data suggests that these malignant cells enter a senescent state emphasizing the role of senescence in tumour suppression.
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16
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Mencarelli C, Martinez–Martinez P. Ceramide function in the brain: when a slight tilt is enough. Cell Mol Life Sci 2013; 70:181-203. [PMID: 22729185 PMCID: PMC3535405 DOI: 10.1007/s00018-012-1038-x] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 05/16/2012] [Accepted: 05/21/2012] [Indexed: 12/14/2022]
Abstract
Ceramide, the precursor of all complex sphingolipids, is a potent signaling molecule that mediates key events of cellular pathophysiology. In the nervous system, the sphingolipid metabolism has an important impact. Neurons are polarized cells and their normal functions, such as neuronal connectivity and synaptic transmission, rely on selective trafficking of molecules across plasma membrane. Sphingolipids are abundant on neural cellular membranes and represent potent regulators of brain homeostasis. Ceramide intracellular levels are fine-tuned and alteration of the sphingolipid-ceramide profile contributes to the development of age-related, neurological and neuroinflammatory diseases. The purpose of this review is to guide the reader towards a better understanding of the sphingolipid-ceramide pathway system. First, ceramide biology is presented including structure, physical properties and metabolism. Second, we describe the function of ceramide as a lipid second messenger in cell physiology. Finally, we highlight the relevance of sphingolipids and ceramide in the progression of different neurodegenerative diseases.
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Affiliation(s)
- Chiara Mencarelli
- Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - Pilar Martinez–Martinez
- Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
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17
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Kujjo LL, Perez GI. Ceramide and mitochondrial function in aging oocytes: joggling a new hypothesis and old players. Reproduction 2012; 143:1-10. [DOI: 10.1530/rep-11-0350] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Maternal aging adversely affects oocyte quality (function and developmental potential) and consequently lowers pregnancy rates while increasing spontaneous abortions. Substantial evidence, especially from egg donation studies, implicates the decreased quality of an aging oocyte as a major factor in the etiology of female infertility. Nevertheless, the cellular and molecular mechanisms responsible for the decreased oocyte quality with advanced maternal aging are not fully characterized. Herein we present information in the published literature and our own data to support the hypothesis that during aging induced decreases in mitochondrial ceramide levels and associated alterations in mitochondrial structure and function are prominent elements contributing to reduced oocyte quality. Hence, by examining the molecular determinants that underlie impairments in oocyte mitochondria, we expect to sieve to a better understanding of the mechanistic anatomy of oocyte aging.
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18
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Lu H, Yuan H, Chen S, Huang L, Xiang H, Yang G, Deng H, Zhou J. Senescent endothelial dysfunction is attributed to the up-regulation of sphingosine-1-phosphate receptor-2 in aged rats. Mol Cell Biochem 2011; 363:217-24. [PMID: 22139303 DOI: 10.1007/s11010-011-1173-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 11/24/2011] [Indexed: 11/25/2022]
Abstract
Sphingosine-1-phosphate (S1P) regulates an array of biological activities in various cell types. Many S1P-regulated functions are mediated by S1P receptor subtypes. Previous studies have shown that the S1P receptor-2 (S1P(2) receptor) is involved in senescence of endothelial cells in vitro. However, the functional outcomes of S1P(2) receptor-mediated signaling pathways in a physiological environment are currently unknown. The main aim of this study was to explore the underlying mechanisms of senescent-associated impairments in pulmonary microvascular endothelial cells (PMECs) isolated from young and aged rats in vivo. The expression of S1P receptor subtypes in PMECs was detected using RT-PCR and Western blot analyses. The chemotaxis of PMECs was measured using the transwell migration assay. The endothelial morphogenesis assay was performed in three-dimensional Matrigel. The wound-healing assay was performed using a scratch wound model on primary PMEC monolayers. We observed that the S1P(2) receptor was markedly increased and S1P-regulated responses were significantly inhibited in PMECs isolated from aged rats. Furthermore, the senescent-associated impairments were revoked by the down-regulation of the S1P(2) receptor in senescent PMECs. These results indicate that the impaired functions (such as chemotactic, wound healing, and morphogenetic responses) in senescent PMECs in vivo are mediated by the S1P(2) receptor.
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Affiliation(s)
- Hongwei Lu
- Center for Experimental Medical Research, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, People's Republic of China
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19
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Gault CR, Obeid LM. Still benched on its way to the bedside: sphingosine kinase 1 as an emerging target in cancer chemotherapy. Crit Rev Biochem Mol Biol 2011; 46:342-51. [PMID: 21787121 DOI: 10.3109/10409238.2011.597737] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
For several decades, lipid biologists have investigated how sphingolipids contribute to physiology, cell biology, and cell fate. Foremost among these discoveries is the finding that the bioactive sphingolipids ceramide, sphingosine, and sphingosine-1-phosphate (S1P) have diverse and often opposing effects on cell fate. Interestingly, these bioactive sphingolipids can be interconverted by just a few enzymatic reactions. Therefore, much attention has been paid to the enzymes which govern these reactions with a disproportionate amount of focus on the enzyme sphingosine kinase 1 (SK1). Several studies have found that tissue expression of SK1 correlates with cancer stage, chemotherapy response, and tumor aggressiveness. In addition, overexpression of SK1 in multiple cancer cell lines increases their resistance to chemotherapy, promotes proliferation, allows for anchorage independent growth, and increases local angiogenesis. Inhibition of SK1 using either pharmacological inhibitors or by crossing SK1 null mice has shown promise in many xenograft models of cancer, as well as several genetic and chemically induced mouse models of carcinogenesis. Here, we review the majority of the evidence that suggests SK1 is a promising target for the prevention and/or treatment of various cancers. Also, we strongly advocate for further research into basic mechanisms of bioactive sphingolipid signaling, and an increased focus on the efficacy of SK inhibitors in non-xenograft models of cancer progression.
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Affiliation(s)
- Christopher R Gault
- Department of Medicine, Medical University of South Carolina, Charleston, SC 29425-7790, USA
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20
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Heffernan-Stroud LA, Obeid LM. p53 and regulation of bioactive sphingolipids. ACTA ACUST UNITED AC 2010; 51:219-28. [PMID: 21035490 DOI: 10.1016/j.advenzreg.2010.10.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Accepted: 10/14/2010] [Indexed: 12/19/2022]
Abstract
Both the sphingolipid and p53 pathways are important regulators- and apparent collaborators-of cell-fate decisions. Whereas some investigations have suggested that ceramide and more complex sphingolipids function upstream of p53 or in a p53-independent manner, other studies propose that p53-dependent alterations in these sphingolipids can also contribute to apoptosis. Further studies focusing on sphingolipid metabolizing enzymes have revealed that they function similarly both upstream and downstream of p53 activation. However, whereas various components of the sphingolipid and p53 pathways may simultaneously function to elicit apoptosis and/or growth inhibition, SMase and SK1 may undergo explicit regulation by p53 that could contribute to ceramide-induced senescence in cells. Thus, we propose that regulation of bioactive sphingolipid signaling molecules could be of therapeutic benefit in the treatment of p53-dependent cancers.
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21
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Novel d-erythro N-octanoyl sphingosine analogs as chemo- and endocrine-resistant breast cancer therapeutics. Cancer Chemother Pharmacol 2010; 65:1191-5. [DOI: 10.1007/s00280-009-1233-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Accepted: 12/24/2009] [Indexed: 11/27/2022]
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Modrak DE, Leon E, Goldenberg DM, Gold DV. Ceramide regulates gemcitabine-induced senescence and apoptosis in human pancreatic cancer cell lines. Mol Cancer Res 2009; 7:890-6. [PMID: 19531570 DOI: 10.1158/1541-7786.mcr-08-0457] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bioactive sphingolipids are potent intracellular signaling molecules having profound effects on cell death, growth, and differentiation. Pharmacologic manipulation of sphingolipid levels could have a significant effect on the induction of apoptosis by anticancer agents, and thus, improve treatment efficacy. We observed that gemcitabine cannot completely kill AsPc1 and Panc1 human pancreatic cancer cells in culture; even at high concentrations of gemcitabine, 30% to 40% of the cells remain viable. By adding sphingomyelin to the culture medium, gemcitabine-induced cell death increased synergistically to >90%. Panc1 cells that survived high concentrations of gemcitabine had an increase in beta-galactosidase activity, a marker of senescence. The inclusion of sphingomyelin with gemcitabine reduced beta-galactosidase activity, as compared with cells treated with gemcitabine alone. Expression of p21(waf1/cip1) in both cell lines exposed to sphingomyelin, gemcitabine, and gemcitabine + sphingomyelin varied relative to the untreated group. C(8)-ceramide induced both cell death and senescence in a dose-dependent manner. These results indicate that gemcitabine induces senescence in pancreatic cancer cells and that sphingomyelin-enhanced chemosensitivity is achieved through reducing the induction of senescence by redirecting the cell to enter the apoptotic pathway. Ceramide levels seem to be critical to this decision, with cell cycle progression being uninhibited at low ceramide levels, senescence induced at moderate levels, and apoptosis initiated at high levels. Our results provide further evidence that targeting the sphingolipid metabolism is a means of enhancing the efficacy of chemotherapeutic agents.
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Affiliation(s)
- David E Modrak
- Garden State Cancer Center, Center for Molecular Medicine and Immunology, Belleville, NJ 07109, USA.
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24
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Estrada R, Zeng Q, Lu H, Sarojini H, Lee JF, Mathis SP, Sanchez T, Wang E, Kontos CD, Lin CY, Hla T, Haribabu B, Lee MJ. Up-regulating sphingosine 1-phosphate receptor-2 signaling impairs chemotactic, wound-healing, and morphogenetic responses in senescent endothelial cells. J Biol Chem 2008; 283:30363-75. [PMID: 18765664 DOI: 10.1074/jbc.m804392200] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Vascular endothelial cells (ECs) have a finite lifespan when cultured in vitro and eventually enter an irreversible growth arrest state called "cellular senescence." It has been shown that sphingolipids may be involved in senescence; however, the molecular links involved are poorly understood. In this study, we investigated the signaling and functions of sphingosine 1-phosphate (S1P), a serum-borne bioactive sphingolipid, in ECs of different in vitro ages. We observed that S1P-regulated responses are significantly inhibited and the S1P(1-3) receptor subtypes are markedly increased in senescent ECs. Increased expression of S1P(1) and S1P(2) was also observed in the lesion regions of atherosclerotic endothelium, where senescent ECs have been identified in vivo. S1P-induced Akt and ERK1/2 activation were comparable between ECs of different in vitro ages; however, PTEN (phosphatase and tensin homolog deleted on chromosome 10) activity was significantly elevated and Rac activation was inhibited in senescent ECs. Rac activation and senescent-associated impairments were restored in senescent ECs by the expression of dominant-negative PTEN and by knocking down S1P(2) receptors. Furthermore, the senescent-associated impairments were induced in young ECs by the expression of S1P(2) to a level similar to that of in vitro senescence. These results indicate that the impairment of function in senescent ECs in culture is mediated by an increase in S1P signaling through S1P(2)-mediated activation of the lipid phosphatase PTEN.
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Affiliation(s)
- Rosendo Estrada
- Gheens Center on Aging, University of Louisville Health Sciences Center, Louisville, Kentucky 40202, USA
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Masukawa Y, Narita H, Shimizu E, Kondo N, Sugai Y, Oba T, Homma R, Ishikawa J, Takagi Y, Kitahara T, Takema Y, Kita K. Characterization of overall ceramide species in human stratum corneum. J Lipid Res 2008; 49:1466-76. [DOI: 10.1194/jlr.m800014-jlr200] [Citation(s) in RCA: 256] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Implications of sphingosine kinase 1 expression level for the cellular sphingolipid rheostat: relevance as a marker for daunorubicin sensitivity of leukemia cells. Int J Hematol 2008; 87:266-75. [DOI: 10.1007/s12185-008-0052-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 12/26/2007] [Accepted: 12/27/2007] [Indexed: 10/22/2022]
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Shen JS, Meng XL, Schiffmann R, Brady RO, Kaneski CR. Establishment and characterization of Fabry disease endothelial cells with an extended lifespan. Mol Genet Metab 2007; 92:137-44. [PMID: 17644384 PMCID: PMC2063578 DOI: 10.1016/j.ymgme.2007.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Revised: 06/05/2007] [Accepted: 06/05/2007] [Indexed: 11/20/2022]
Abstract
Fabry disease is an inborn error of glycosphingolipid catabolism resulting from a deficiency of lysosomal enzyme alpha-galactosidase A. The major clinical manifestations of the disease, such as stroke, cardiac dysfunction, and renal impairment, are thought to be caused by vasculopathy due to progressive accumulation of globotriaosylceramide in vascular endothelial cells. The pathogenesis of the vasculopathy has not been elucidated. Since in vitro studies using primary endothelial cells are hampered by the limited lifespan of these cells, the availability of cultured endothelial cells with an extended lifespan is critical for the study of the vasculopathy of Fabry disease. We therefore generated an endothelial cell line from a Fabry hemizygote by introduction of human telomerase reverse transcriptase gene. The cell line has markedly extended lifespan compared to parental primary cells. The cells stably express many key markers of endothelial cells such as von Willebrand factor, CD31, CD34, and endothelial nitric oxide synthase (eNOS) and retain functional characteristics such as uptake of acetylated low-density lipoprotein, responsiveness to angiogenic growth factors, up-regulation of eNOS production upon extracellular stimuli, and formation of tube-like structures on Matrigel basement membrane matrix. The cells show significantly reduced activity of alpha-galactosidase A compared with primary endothelial cells from normal individuals and accumulate globotriaosylceramide in lysosomes. This cell line will provide a useful in vitro model of Fabry disease and will facilitate systematic studies to investigate pathogenic mechanisms and explore new therapeutic approaches for Fabry disease.
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Affiliation(s)
- Jin-Song Shen
- Developmental and Metabolic Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health
| | - Xing-Li Meng
- Laboratory of Clinical Genomics, National Institute of Child Health and Human Development, National Institutes of Health
| | - Raphael Schiffmann
- Developmental and Metabolic Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health
| | - Roscoe O. Brady
- Developmental and Metabolic Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health
| | - Christine R. Kaneski
- Developmental and Metabolic Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health
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Abstract
Cardiologists and most physicians believe that aging is an independent risk factor for human atherosclerosis, whereas atherosclerosis is thought to be a characteristic feature of aging in humans by many gerontologists. Because atherosclerosis is among the age-associated changes that almost always escape the influence of natural selection in humans, it might be reasonable to regard atherosclerosis as a feature of aging. Accordingly, when we investigate the pathogenesis of human atherosclerosis, it may be more important to answer the question of how we age than what specifically promotes atherosclerosis. Recently, genetic analyses using various animal models have identified molecules that are crucial for aging. These include components of the DNA-repair system, the tumor suppressor pathway, the telomere maintenance system, the insulin/Akt pathway, and other metabolic pathways. Interestingly, most of the molecules that influence the phenotypic changes of aging also regulate cellular senescence, suggesting a causative link between cellular senescence and aging. For example, DNA-repair defects can cause phenotypic changes that resemble premature aging, and senescent cells that show DNA damage accumulate in the elderly. Excessive calorie intake can cause diabetes and hyperinsulinemia, whereas dysregulation of the insulin pathway has been shown to induce cellular senescence in vitro. Calorie restriction or a reduction of insulin signals extends the lifespan of various species and decreases biomarkers of cellular senescence in vivo. There is emerging evidence that cellular senescence contributes to the pathogenesis of human atherosclerosis. Senescent vascular cells accumulate in human atheroma tissues and exhibit various features of dysfunction. In this review, we examine the hypothesis that cellular senescence might contribute to atherosclerosis, which is a characteristic of aging in humans.
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Affiliation(s)
- Tohru Minamino
- Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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Masukawa Y, Tsujimura H. Highly sensitive determination of diverse ceramides in human hair using reversed-phase high-performance liquid chromatography-electrospray ionization mass spectrometry. Lipids 2007; 42:275-90. [PMID: 17393232 DOI: 10.1007/s11745-006-3012-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2006] [Accepted: 11/27/2006] [Indexed: 01/30/2023]
Abstract
Since ceramides (CERs) play roles in signal transduction and cell regulation, CERs of human hair might be responsible for apoptosis during keratinization, in addition to their structural barrier and water-holding functions. Although, we previously developed a method for comprehensive profiling of the CERs in hair, that method was too insensitive to quantitatively characterize the CERs in a small amount of hair samples. The aim of this study was to develop a novel method for the highly sensitive determination of the diverse CERs. The method developed is negative ion electrospray ionization mass spectrometry (ESI-MS) coupled to reversed-phase high-performance liquid chromatography (RP-HPLC) using methanol containing 10 mM ammonium acetate as a mobile phase. By this method, 48 peaks derived from 73 kinds of CERs were simultaneously determined in selected ion monitoring measurement using one calibration line of the standard N-palmitoyl dihydrosphigosine, based on extremely small differences in the molar responses among different species of CERs, followed by the calculation of the actual levels using corrections for (13)C and (2)H effects. This method had extremely high sensitivity as indicated in the limit of quantification being in the femtomolar range. Other quantitative validation data, such as reproducibility, linearity and recoveries, were all sufficient. The quantitative levels of CERs determined by RP-HPLC-ESI-MS were comparable with those determined by thin-layer chromatography. This method was successfully applied to the characterization of levels of CERs in only 1-mm pieces derived from a single hair fiber and revealed the presence of interindividual and intraindividual variations of the CER composition. This RP-HPLC-ESI-MS method can be a powerful tool for future research on physicochemical and physiological roles of CERs in hair.
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Affiliation(s)
- Yoshinori Masukawa
- Tochigi Research Laboratories, Kao Corporation, Ichikai, Haga, Tochigi 321-3497, Japan.
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Masukawa Y, Tsujimura H. Highly sensitive determination of N-acyl dihydrosphingosine using liquid chromatography–electrospray ionization mass spectrometry. J Chromatogr A 2006; 1127:52-9. [PMID: 16781721 DOI: 10.1016/j.chroma.2006.05.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2006] [Revised: 05/20/2006] [Accepted: 05/24/2006] [Indexed: 11/16/2022]
Abstract
An analytical method for highly sensitive determination of four N-acyl dihydrosphingosines (NDSs) of all ceramides (CERs) in human hair, such as N-palmitoyl dihydrosphingosine (N16DS18), N-stearoyl dihydrosphingosine (N18DS18), N-lignocerol dihydrosphingosine (N24DS18) and N-nervonoyl dihydrosphingosine (N24:1DS18), has been developed using electrospray ionization (ESI) MS connected to reversed-phase LC with selected ion monitoring (SIM). The selection of negative ESI under optimal conditions of in-source collision-induced dissociation was determined based on the simplicity of molecular-related ions and their intensities. Of all ESI-MS parameters tested, the flow of dry nitrogen gas strongly affected the sensitivity of molecular-related ions, particularly in N24DS18 and N24:1DS18, while the capillary voltage elicited significantly different effects on the signal-to-noise ratio between N16DS18/N18DS18 and N24DS18/N24:1DS18. This newly developed method to determine the NDSs is the most sensitive of all existing methods, as shown in the limits of detection and quantification being in the range of 0.06-0.29 and 0.18-0.98fmol, respectively. The linearity, precision and accuracy were all sufficient to determine the NDSs in ca. 0.1mg of a hair fiber ( approximately 1cm in length). This method has been used to characterize levels of the NDSs from the proximal root end to the distal tip of each of six hair fibers obtained from two different females. Characteristic changes were observed between both females as well as among fibers derived from each female. This method will be useful not only for clarifying the roles of the CERs in human hair but also for investigating the physiology of CERs relevant to signal transduction and cell regulation in human cells/tissues.
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Affiliation(s)
- Yoshinori Masukawa
- Analytical Research Center, Tochigi Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga, Tochigi 321-3497, Japan.
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