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Zhou H, Huo Y, Yang N, Wei T. Phosphatidic acid: from biophysical properties to diverse functions. FEBS J 2024; 291:1870-1885. [PMID: 37103336 DOI: 10.1111/febs.16809] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/15/2023] [Accepted: 04/26/2023] [Indexed: 04/28/2023]
Abstract
Phosphatidic acid (PA), the simplest phospholipid, acts as a key metabolic intermediate and second messenger that impacts diverse cellular and physiological processes across species ranging from microbes to plants and mammals. The cellular levels of PA dynamically change in response to stimuli, and multiple enzymatic reactions can mediate its production and degradation. PA acts as a signalling molecule and regulates various cellular processes via its effects on membrane tethering, enzymatic activities of target proteins, and vesicular trafficking. Because of its unique physicochemical properties compared to other phospholipids, PA has emerged as a class of new lipid mediators influencing membrane structure, dynamics, and protein interactions. This review summarizes the biosynthesis, dynamics, and cellular functions and properties of PA.
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Affiliation(s)
- Hejiang Zhou
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yanwu Huo
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Na Yang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- Laboratory of Genetic and Genomics, National Institute on Aging, NIH, Baltimore, MD, USA
| | - Taotao Wei
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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2
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Ponnaiah M, Zakiev E, Lhomme M, Rached F, Camont L, Serrano CV, Santos RD, Chapman MJ, Orekhov A, Kontush A. Acute myocardial infarction preferentially alters low-abundant, long-chain unsaturated phospholipid and sphingolipid species in plasma high-density lipoprotein subpopulations. ATHEROSCLEROSIS PLUS 2024; 55:21-30. [PMID: 38226021 PMCID: PMC10788781 DOI: 10.1016/j.athplu.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 01/17/2024]
Abstract
Aim High-density lipoprotein (HDL) particles in ST-segment elevation myocardial infarction (STEMI) are deficient in their anti-atherogenic function. Molecular determinants of such deficiency remain obscure. Methods Five major HDL subpopulations were isolated using density-gradient ultracentrifugation from STEMI patients (n = 12) and healthy age- and sex-matched controls (n = 12), and 160 species of phosphatidylcholine, lysophosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylglycerol, phosphatidylserine, phosphatidic acid, sphingomyelin and ceramide were quantified by LC-MS/MS. Results Multiple minor species of proinflammatory phosphatidic acid and lysophosphatidylcholine were enriched by 1.7-27.2-fold throughout the majority of HDL subpopulations in STEMI. In contrast, minor phosphatidylcholine, phosphatidylglycerol, phosphatidylinositol, phosphatidylethanolamine, sphingomyelin and ceramide species were typically depleted up to 3-fold in STEMI vs. control HDLs, while abundances of their major species did not differ between the groups. Intermediate-to-long-chain phosphatidylcholine, phosphatidylinositol and phosphatidylglycerol species were more affected by STEMI than their short-chain counterparts, resulting in positive correlations between their fold decrease and the carbon chain length. Additionally, fold decreases in the abundances of multiple lipid species were positively correlated with the double bond number in their carbon chains. Finally, abundances of several phospholipid and ceramide species were positively correlated with cholesterol efflux capacity and antioxidative activity of HDL subpopulations, both reduced in STEMI vs controls. KEGG pathway analysis tied these species to altered glycerophospholipid and linoleic acid metabolism. Conclusions Minor unsaturated intermediate-to-long-chain phospholipid and sphingolipid species in HDL subpopulations are most affected by STEMI, reflecting alterations in glycerophospholipid and linoleic acid metabolism with the accumulation of proinflammatory lysolipids and maintenance of homeostasis of major phospholipid species.
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Affiliation(s)
- Maharajah Ponnaiah
- IHU ICAN (ICAN OMICS and ICAN I/O), Foundation for Innovation in Cardiometabolism and Nutrition (ANR-10-IAHU-05), Paris, France
| | - Emile Zakiev
- National Institute for Health and Medical Research (INSERM), UMRS 1166 ICAN, Faculty of Medicine Pitié-Salpêtrière, Sorbonne University, Paris, France
- Institute of General Pathology and Pathophysiology, Moscow, Russia
| | - Marie Lhomme
- IHU ICAN (ICAN OMICS and ICAN I/O), Foundation for Innovation in Cardiometabolism and Nutrition (ANR-10-IAHU-05), Paris, France
| | - Fabiana Rached
- Heart Institute (InCor), University of Sao Paulo Medical School Hospital, Sao Paulo, Brazil
| | - Laurent Camont
- National Institute for Health and Medical Research (INSERM), UMRS 1166 ICAN, Faculty of Medicine Pitié-Salpêtrière, Sorbonne University, Paris, France
| | - Carlos V. Serrano
- Heart Institute (InCor), University of Sao Paulo Medical School Hospital, Sao Paulo, Brazil
| | - Raul D. Santos
- Heart Institute (InCor), University of Sao Paulo Medical School Hospital, Sao Paulo, Brazil
- Hospital Israelita Albert Einstein, Sao Paulo, Brazil
| | - M. John Chapman
- National Institute for Health and Medical Research (INSERM), UMRS 1166 ICAN, Faculty of Medicine Pitié-Salpêtrière, Sorbonne University, Paris, France
| | - Alexander Orekhov
- Institute of General Pathology and Pathophysiology, Moscow, Russia
- Institute for Atherosclerosis Research, Moscow, Russia
- Centre of Collective Usage, Institute of Gene Biology, Moscow, Russia
| | - Anatol Kontush
- National Institute for Health and Medical Research (INSERM), UMRS 1166 ICAN, Faculty of Medicine Pitié-Salpêtrière, Sorbonne University, Paris, France
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Tan J, Zhong M, Hu Y, Pan G, Yao J, Tang Y, Duan H, Jiang Y, Shan W, Lin J, Liu Y, Huang J, Zheng H, Zhou Y, Fu G, Li Z, Xu B, Zha J. Ritanserin suppresses acute myeloid leukemia by inhibiting DGKα to downregulate phospholipase D and the Jak-Stat/MAPK pathway. Discov Oncol 2023; 14:118. [PMID: 37392305 DOI: 10.1007/s12672-023-00737-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/25/2023] [Indexed: 07/03/2023] Open
Abstract
Refractory or relapsed (R/R) AML is the most challenging form of AML to treat. Due to frequent genetic mutations, therapy alternatives are limited. Here, we identified the role of ritanserin and its target DGKα in AML. Several AML cell lines and primary patient cells were treated with ritanserin and subjected to cell proliferation, apoptosis and gene analyses with CCK-8 assay, Annexin V/PI assay and Western blotting, respectively. We also evaluated the function of the ritanserin target diacylglycerol kinase alpha (DGKα) in AML by bioinformatics. In vitro experiments have revealed that ritanserin inhibits AML progression in a dose- and time-dependent manner, and it shows an anti-AML effect in xenograft mouse models. We further demonstrated that the expression of DGKα was elevated in AML and correlated with poor survival. Mechanistically, ritanserin negatively regulates SphK1 expression through PLD signaling, also inhibiting the Jak-Stat and MAPK signaling pathways via DGKα. These findings suggest that DGKα may be an available therapeutic target and provide effective preclinical evidence of ritanserin as a promising treatment for AML.
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Affiliation(s)
- Jinshui Tan
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Mengya Zhong
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Yanyan Hu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Innovation Center for Cell Biology, Xiamen University, Xiamen, 361002, Fujian, China
| | - Guangchao Pan
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Jingwei Yao
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Yuanfang Tang
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Innovation Center for Cell Biology, Xiamen University, Xiamen, 361002, Fujian, China
| | - Hongpeng Duan
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Yuelong Jiang
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Weihang Shan
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Jiaqi Lin
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Innovation Center for Cell Biology, Xiamen University, Xiamen, 361002, Fujian, China
| | - Yating Liu
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Jiewen Huang
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361002, Fujian, China
| | - Huijian Zheng
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, 350122, Fujian, China
| | - Yong Zhou
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Guo Fu
- State Key Laboratory of Cellular Stress Biology, School of Medicine, Innovation Center for Cell Biology, Xiamen University, Xiamen, 361002, Fujian, China
| | - Zhifeng Li
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China
| | - Bing Xu
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China.
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China.
| | - Jie Zha
- Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, People's Republic of China.
- Key Laboratory of Xiamen for Diagnosis and Treatment of Hematological Malignancy, No. 55, Shizhen Hai Road, Xiamen, 361003, Fujian, People's Republic of China.
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Morita SY, Ikeda Y. Regulation of membrane phospholipid biosynthesis in mammalian cells. Biochem Pharmacol 2022; 206:115296. [DOI: 10.1016/j.bcp.2022.115296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 11/02/2022]
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Pandit S, Goel R, Mishra G. Phosphatidic acid binds to and stimulates the activity of ARGAH2 from Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 185:344-355. [PMID: 35752016 DOI: 10.1016/j.plaphy.2022.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/27/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Phosphatidic acid (PA) has emerged as an important lipid signal during abiotic and biotic stress conditions such as drought, salinity, freezing, nutrient starvation, wounding and microbial elicitation. PA acts during stress responses primarily via binding and translocating target proteins or through modulating their activity. Owing to the importance of PA during stress signaling and developmental stages, it is imperative to identify PA interacting proteins and decipher their specific roles. In the present study, we have identified PA binding proteins from the leaves of Arabidopsis thaliana. Mass spectroscopy analysis led to the identification of 21 PA binding proteins with known roles in various cellular processes. One of the PA-binding proteins identified during this study, AtARGAH2, was further studied to unravel the role of PA interaction. Recombinant AtARGAH2 binding with immobilized PA on a solid support validated PA-AtARGAH2 binding invitro. PA binding to AtARGAH2 leads to the enhancement of arginase enzymatic activity in a dose dependent manner. Enzyme kinetics of recombinant AtARGAH2 demonstrated a lower Km value in presence of PA, suggesting role of PA in efficient enzyme-substrate binding. This simple approach could systematically be applied to perform an inclusive study on lipid binding proteins to elucidate their role in physiology of plants.
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Affiliation(s)
- Shatakshi Pandit
- Department of Botany, University of Delhi, Delhi, 110007, India.
| | - Renu Goel
- Translational Health Science and Technology Institute, Faridabad, Haryana, 121001, India.
| | - Girish Mishra
- Department of Botany, University of Delhi, Delhi, 110007, India.
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Akinsola AF, Osasona I, Akintayo ET, Siyanbola TO, Omosebi SO. Nutritional Evaluation of Calabash Gourd (L agenaria Siceraria) Seeds and Oil. JOURNAL OF CULINARY SCIENCE & TECHNOLOGY 2022. [DOI: 10.1080/15428052.2021.2016527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Ilesanmi Osasona
- Department of Chemical Sciences, Bamidele Olumilua University of Education, Science and Technology, Ikere – Ekiti, Nigeria
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Kattan RE, Han H, Seo G, Yang B, Lin Y, Dotson M, Pham S, Menely Y, Wang W. Interactome analysis of human phospholipase D and phosphatidic acid-associated protein network. Mol Cell Proteomics 2022; 21:100195. [PMID: 35007762 PMCID: PMC8864472 DOI: 10.1016/j.mcpro.2022.100195] [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: 10/20/2021] [Revised: 12/22/2021] [Accepted: 01/06/2022] [Indexed: 01/01/2023] Open
Abstract
Mammalian phospholipase D (PLD) enzyme family consists of six members. Among them, PLD1/2/6 catalyzes phosphatidic acid (PA) production, while PLD3/4/5 has no catalytic activities. Deregulation of the PLD-PA lipid signaling has been associated with various human diseases including cancer. However, a comprehensive analysis of the regulators and effectors for this crucial lipid metabolic pathway has not been fully achieved. Using a proteomic approach, we defined the protein interaction network for the human PLD family of enzymes and PA and revealed diverse cellular signaling events involving them. Through it, we identified PJA2 as a novel E3 ubiquitin ligase for PLD1 involved in control of the PLD1-mediated mammalian target of rapamycin signaling. Additionally, we showed that PA interacted with and positively regulated sphingosine kinase 1. Taken together, our study not only generates a rich interactome resource for further characterizing the human PLD-PA lipid signaling but also connects this important metabolic pathway with numerous biological processes. Defining the interactome of human phospholipase D enzymes and phosphatidic acid. PJA2 functions as an E3 ubiquitin ligase of phospholipase D1. Phosphatidic acid interacts with and positively regulates sphingosine kinase 1.
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Affiliation(s)
- Rebecca Elizabeth Kattan
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Han Han
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Gayoung Seo
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Bing Yang
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Yongqi Lin
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Max Dotson
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Stephanie Pham
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Yahya Menely
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Wenqi Wang
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA.
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Venkatraman G, Tang X, Du G, Parisentti AM, Hemmings DG, Brindley DN. Lysophosphatidate Promotes Sphingosine 1-Phosphate Metabolism and Signaling: Implications for Breast Cancer and Doxorubicin Resistance. Cell Biochem Biophys 2021; 79:531-545. [PMID: 34415509 DOI: 10.1007/s12013-021-01024-6] [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: 06/23/2021] [Accepted: 07/09/2021] [Indexed: 10/20/2022]
Abstract
Lysophosphatidate (LPA) and sphingosine 1-phosphate (S1P) promote vasculogenesis, angiogenesis, and wound healing by activating a plethora of overlapping signaling pathways that stimulate mitogenesis, cell survival, and migration. As such, maladaptive signaling by LPA and S1P have major effects in increasing tumor progression and producing poor patient outcomes after chemotherapy and radiotherapy. Many signaling actions of S1P and LPA are not redundant; each are vital in normal physiology and their metabolisms differ. In the present work, we studied how LPA signaling impacts S1P metabolism and signaling in MDA-MB-231 and MCF-7 breast cancer cells. LPA increased sphingosine kinase-1 (SphK1) synthesis and rapidly activated cytosolic SphK1 through association with membranes. Blocking phospholipase D activity attenuated the LPA-induced activation of SphK1 and the synthesis of ABCC1 and ABCG2 transporters that secrete S1P from cells. This effect was magnified in doxorubicin-resistant MCF-7 cells. LPA also facilitated S1P signaling by increasing mRNA expression for S1P1 receptors. Doxorubicin-resistant MCF-7 cells had increased S1P2 and S1P3 receptor expression and show increased LPA-induced SphK1 activation, increased expression of ABCC1, ABCG2 and greater S1P secretion. Thus, LPA itself and LPA-induced S1P signaling counteract doxorubicin-induced death of MCF-7 cells. We conclude from the present and previous studies that LPA promotes S1P metabolism and signaling to coordinately increase tumor growth and metastasis and decrease the effectiveness of chemotherapy and radiotherapy for breast cancer treatment.
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Affiliation(s)
- Ganesh Venkatraman
- Department of Biochemistry, University of Alberta, Edmonton, AB, T6G 2S2, Canada
| | - Xiaoyun Tang
- Department of Biochemistry, University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, T6G 2S2, Canada
| | - Guangwei Du
- Department of Integrative Biology & Pharmacology, University of Texas Health Science at Houston, Houston, TX, 77030, USA
| | - Amadeo M Parisentti
- Northern Ontario School of Medicine, Health Sciences North Research Institute, Sudbury, ON, P3E 2H2, Canada
| | - Denise G Hemmings
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, T6G 2S2, Canada.
- Medical Microbiology and Immunology, Obstetrics and Gynecology, Women and Children's Health Research Institute, Li Ka Shing Institute of Virology, Cardiovascular Research Center, University of Alberta, Edmonton, AB, T6G 2S2, Canada.
| | - David N Brindley
- Department of Biochemistry, University of Alberta, Edmonton, AB, T6G 2S2, Canada.
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, T6G 2S2, Canada.
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Novel N-bridged pyrazole-1-carbothioamides with potential antiproliferative activity: design, synthesis, in vitro and in silico studies. Future Med Chem 2021; 13:1743-1766. [PMID: 34427113 DOI: 10.4155/fmc-2021-0066] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Thiazole-substituted pyrazole is an important structural feature of many bioactive compounds, including antiviral, antitubercular, analgesic and anticancer agents. Herein we describe an efficient and facile approach for the synthesis of two series of 36 novel N-bridged pyrazole-1-phenylthiazoles. The antiproliferative activity of a set of representative compounds was evaluated in vitro against different human cancer cell lines. Among the identified compounds, compound 18 showed potent anticancer activity against the examined cancer cell lines. The in silico molecular docking study revealed that compound 18 possesses high binding affinity toward both SK1 and CDK2. Overall, these results indicate that compound 18 is a promising lead anticancer compound which may be exploited for development of antiproliferative drugs.
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Sharma P, Yadav SK, Shah SD, Javed E, Lim JM, Pan S, Nayak AP, Panettieri RA, Penn RB, Kambayashi T, Deshpande DA. Diacylglycerol Kinase Inhibition Reduces Airway Contraction by Negative Feedback Regulation of Gq-signaling. Am J Respir Cell Mol Biol 2021; 65:658-671. [PMID: 34293268 DOI: 10.1165/rcmb.2021-0106oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Exaggerated airway smooth muscle (ASM) contraction regulated by the Gq family of G protein-coupled receptors (GPCRs) causes airway hyperresponsiveness (AHR) in asthma. Activation of Gq-coupled GPCRs leads to phospholipase C (PLC)-mediated generation of inositol triphosphate (IP3) and diacylglycerol (DAG). DAG signaling is terminated by the action of DAG kinase (DGK) that converts DAG into phosphatidic acid (PA). Our previous study demonstrated that DGKα and ζ isoform knockout mice are protected from the development of allergen-induced AHR. Here we aimed at determining the mechanism by which DGK regulates ASM contraction. Activity of DGK isoforms was inhibited in human ASM cells by siRNA-mediated knockdown of DGKα and ζwhile pharmacological inhibition was achieved by pan DGK inhibitor I (R59022). Effects of DGK inhibition on contractile agonist-induced activation of PLC and myosin light chain (MLC) kinase, elevation of IP3, and calcium levels were assessed. Further, we employed human precision-cut lung slices and assessed the role of DGK in agonist-induced bronchoconstriction. DGK inhibitor I attenuated histamine- and methacholine-induced bronchoconstriction. DGKα and ζ knockdown or pre-treatment with DGK inhibitor I resulted in attenuated agonist-induced phosphorylation of MLC and myosin light chain phosphatase in ASM cells. Further, DGK inhibition decreased Gq agonist-induced calcium elevation, generation of IP3, and increased histamine-induced production of PA. Finally, DGK inhibition or treatment with DAG analog resulted in attenuation of activation of PLC in human ASM cells. Our findings suggest that DGK inhibition perturbed the DAG:PA ratio resulting in inhibition of Gq-PLC activation in a negative feedback manner, resulting in protection against ASM contraction.
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Affiliation(s)
- Pawan Sharma
- Thomas Jefferson University - Center City Campus, 6559, Medicine, Philadelphia, Pennsylvania, United States.,University of Tasmania Faculty of Health, 60119, Hobart, Tasmania, Australia
| | - Santosh K Yadav
- Thomas Jefferson University, 6559, Medicine, Philadelphia, Pennsylvania, United States
| | - Sushrut D Shah
- Thomas Jefferson University, 6559, Medicine, Philadelphia, Pennsylvania, United States
| | - Elham Javed
- Thomas Jefferson University, 6559, Medicine, Philadelphia, Pennsylvania, United States
| | - John M Lim
- Thomas Jefferson University Sidney Kimmel Medical College, 12313, Philadelphia, Pennsylvania, United States
| | - Shi Pan
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States
| | - Ajay P Nayak
- Thomas Jefferson University, 6559, Medicine, Philadelphia, Pennsylvania, United States
| | - Reynold A Panettieri
- Rutgers University, 242612, Rutgers Institute for Translational Medicine and Science, Child Health Institute, New Brunswick, New Jersey, United States
| | - Raymond B Penn
- Thomas Jefferson University, 6559, Medicine, Philadelphia, Pennsylvania, United States
| | - Taku Kambayashi
- University of Pennsylvania, 6572, Pathology, Philadelphia, Pennsylvania, United States
| | - Deepak A Deshpande
- Thomas Jefferson University, 6559, Center for Translational Medicine, Philadelphia, Pennsylvania, United States;
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Brown RDR, Veerman BEP, Oh J, Tate RJ, Torta F, Cunningham MR, Adams DR, Pyne S, Pyne NJ. A new model for regulation of sphingosine kinase 1 translocation to the plasma membrane in breast cancer cells. J Biol Chem 2021; 296:100674. [PMID: 33865856 PMCID: PMC8135045 DOI: 10.1016/j.jbc.2021.100674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/01/2021] [Accepted: 04/14/2021] [Indexed: 01/24/2023] Open
Abstract
The translocation of sphingosine kinase 1 (SK1) to the plasma membrane (PM) is crucial in promoting oncogenesis. We have previously proposed that SK1 exists as both a monomer and dimer in equilibrium, although it is unclear whether these species translocate to the PM via the same or different mechanisms. We therefore investigated the structural determinants involved to better understand how translocation might potentially be targeted for therapeutic intervention. We report here that monomeric WT mouse SK1 (GFP-mSK1) translocates to the PM of MCF-7L cells stimulated with carbachol or phorbol 12-myristate 13-acetate, whereas the dimer translocates to the PM in response to sphingosine-1-phosphate; thus, the equilibrium between the monomer and dimer is sensitive to cellular stimulus. In addition, carbachol and phorbol 12-myristate 13-acetate induced translocation of monomeric GFP-mSK1 to lamellipodia, whereas sphingosine-1-phosphate induced translocation of dimeric GFP-mSK1 to filopodia, suggesting that SK1 regulates different cell biological processes dependent on dimerization. GFP-mSK1 mutants designed to modulate dimerization confirmed this difference in localization. Regulation by the C-terminal tail of SK1 was investigated using GFP-mSK1 truncations. Removal of the last five amino acids (PPEEP) prevented translocation of the enzyme to the PM, whereas removal of the last ten amino acids restored translocation. This suggests that the penultimate five amino acids (SRRGP) function as a translocation brake, which can be released by sequestration of the PPEEP sequence. We propose that these determinants alter the arrangement of N-terminal and C-terminal domains in SK1, leading to unique surfaces that promote differential translocation to the PM.
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Affiliation(s)
- Ryan D R Brown
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, UK
| | - Ben E P Veerman
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, UK
| | - Jeongah Oh
- SLING, Singapore Lipidomics Incubator, Life Sciences Institute and Department of Biochemistry, YLL School of Medicine, National University of Singapore, Singapore, Singapore
| | - Rothwelle J Tate
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, UK
| | - Federico Torta
- SLING, Singapore Lipidomics Incubator, Life Sciences Institute and Department of Biochemistry, YLL School of Medicine, National University of Singapore, Singapore, Singapore
| | - Margaret R Cunningham
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, UK
| | - David R Adams
- School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, UK
| | - Susan Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, UK
| | - Nigel J Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, UK.
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12
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Li X, Nakayama K, Goto T, Akamatsu S, Kobayashi T, Shimizu K, Ogawa O, Inoue T. A narrative review of urinary phospholipids: from biochemical aspect towards clinical application. Transl Androl Urol 2021; 10:1829-1849. [PMID: 33968673 PMCID: PMC8100843 DOI: 10.21037/tau-20-1263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
As a newly emerged discipline, lipidomic studies have focused on the comprehensive characterization and quantification of lipids in a given biological system, which has remarkably advanced in recent years owing to the rapid development of analytical techniques, especially mass spectrometry. Among diverse lipid classes, phospholipids, which have fundamental roles in the formation of cellular membranes, signaling processes, and bioenergetics have gained momentum in several fields of research. The altered composition, concentration, spatial distribution, and metabolism of phospholipids in cells, tissues, and body fluids have been elucidated in various human diseases such as cancer, inflammation, as well as cardiovascular and metabolic disorders. Among the different kinds of phospholipid sources in the human body, urine has not been extensively investigated in recent years owing to the extremely low concentrations of phospholipids and high levels of salts and other contaminants, which can interfere with precise detection. However, with profound advances and rapid expansion in analytical methods, urinary phospholipids have attracted increasing attention in current biomedical research as urine is an easily available source for the discovery of noninvasive biomarkers. In this review, we provide an overview of urinary phospholipids, including their biochemical aspects and clinical applications, aimed at promoting this field of research.
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Affiliation(s)
- Xin Li
- Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Nakayama
- Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takayuki Goto
- Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shusuke Akamatsu
- Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takashi Kobayashi
- Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koji Shimizu
- Clinical Research Center for Medical Equipment Development, Kyoto University Hospital, Kyoto, Japan
| | - Osamu Ogawa
- Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takahiro Inoue
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, Tsu, Japan
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13
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D'Aprile C, Prioni S, Mauri L, Prinetti A, Grassi S. Lipid rafts as platforms for sphingosine 1-phosphate metabolism and signalling. Cell Signal 2021; 80:109929. [PMID: 33493577 DOI: 10.1016/j.cellsig.2021.109929] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 02/06/2023]
Abstract
Spontaneous segregation of cholesterol and sphingolipids as a liquid-ordered phase leads to their clustering in selected membrane areas, the lipid rafts. These specialized membrane domains enriched in gangliosides, sphingomyelin, cholesterol and selected proteins involved in signal transduction, organize and determine the function of multiprotein complexes involved in several aspects of signal transduction, thus regulating cell homeostasis. Sphingosine 1-phosphate, an important biologically active mediator, is involved in several signal transduction processes regulating a plethora of cell functions and, not only several of its downstream effectors tend to localize in lipid rafts, some of the enzymes involved in its pathway, of receptors involved in its signalling and its transporters have been often found in these membrane microdomains. Considering this, in this review we address what is currently known regarding the relationship between sphingosine 1-phosphate metabolism and signalling and plasma membrane lipid rafts.
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Affiliation(s)
- Chiara D'Aprile
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Simona Prioni
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Laura Mauri
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Alessandro Prinetti
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Sara Grassi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy.
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14
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Velazquez FN, Hernandez-Corbacho M, Trayssac M, Stith JL, Bonica J, Jean B, Pulkoski-Gross MJ, Carroll BL, Salama MF, Hannun YA, Snider AJ. Bioactive sphingolipids: Advancements and contributions from the laboratory of Dr. Lina M. Obeid. Cell Signal 2020; 79:109875. [PMID: 33290840 PMCID: PMC8244749 DOI: 10.1016/j.cellsig.2020.109875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 02/06/2023]
Abstract
Sphingolipids and their synthetic enzymes have emerged as critical mediators in numerous diseases including inflammation, aging, and cancer. One enzyme in particular, sphingosine kinase (SK) and its product sphingosine-1-phosphate (S1P), has been extensively implicated in these processes. SK catalyzes the phosphorylation of sphingosine to S1P and exists as two isoforms, SK1 and SK2. In this review, we will discuss the contributions from the laboratory of Dr. Lina M. Obeid that have defined the roles for several bioactive sphingolipids in signaling and disease with an emphasis on her work defining SK1 in cellular fates and pathobiologies including proliferation, senescence, apoptosis, and inflammation.
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Affiliation(s)
- Fabiola N Velazquez
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Maria Hernandez-Corbacho
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Magali Trayssac
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Jeffrey L Stith
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Joseph Bonica
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA
| | - Bernandie Jean
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Michael J Pulkoski-Gross
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA
| | - Brittany L Carroll
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA
| | - Mohamed F Salama
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Yusuf A Hannun
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Ashley J Snider
- Department of Nutritional Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, AZ 85721, USA.
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15
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Blankenbach KV, Claas RF, Aster NJ, Spohner AK, Trautmann S, Ferreirós N, Black JL, Tesmer JJG, Offermanns S, Wieland T, Meyer zu Heringdorf D. Dissecting G q/11-Mediated Plasma Membrane Translocation of Sphingosine Kinase-1. Cells 2020; 9:cells9102201. [PMID: 33003441 PMCID: PMC7599897 DOI: 10.3390/cells9102201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/25/2020] [Accepted: 09/27/2020] [Indexed: 12/24/2022] Open
Abstract
Diverse extracellular signals induce plasma membrane translocation of sphingosine kinase-1 (SphK1), thereby enabling inside-out signaling of sphingosine-1-phosphate. We have shown before that Gq-coupled receptors and constitutively active Gαq/11 specifically induced a rapid and long-lasting SphK1 translocation, independently of canonical Gq/phospholipase C (PLC) signaling. Here, we further characterized Gq/11 regulation of SphK1. SphK1 translocation by the M3 receptor in HEK-293 cells was delayed by expression of catalytically inactive G-protein-coupled receptor kinase-2, p63Rho guanine nucleotide exchange factor (p63RhoGEF), and catalytically inactive PLCβ3, but accelerated by wild-type PLCβ3 and the PLCδ PH domain. Both wild-type SphK1 and catalytically inactive SphK1-G82D reduced M3 receptor-stimulated inositol phosphate production, suggesting competition at Gαq. Embryonic fibroblasts from Gαq/11 double-deficient mice were used to show that amino acids W263 and T257 of Gαq, which interact directly with PLCβ3 and p63RhoGEF, were important for bradykinin B2 receptor-induced SphK1 translocation. Finally, an AIXXPL motif was identified in vertebrate SphK1 (positions 100–105 in human SphK1a), which resembles the Gαq binding motif, ALXXPI, in PLCβ and p63RhoGEF. After M3 receptor stimulation, SphK1-A100E-I101E and SphK1-P104A-L105A translocated in only 25% and 56% of cells, respectively, and translocation efficiency was significantly reduced. The data suggest that both the AIXXPL motif and currently unknown consequences of PLCβ/PLCδ(PH) expression are important for regulation of SphK1 by Gq/11.
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Affiliation(s)
- Kira Vanessa Blankenbach
- Institut für Allgemeine Pharmakologie und Toxikologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (K.V.B.); (R.F.C.); (N.J.A.); (A.K.S.)
| | - Ralf Frederik Claas
- Institut für Allgemeine Pharmakologie und Toxikologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (K.V.B.); (R.F.C.); (N.J.A.); (A.K.S.)
| | - Natalie Judith Aster
- Institut für Allgemeine Pharmakologie und Toxikologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (K.V.B.); (R.F.C.); (N.J.A.); (A.K.S.)
| | - Anna Katharina Spohner
- Institut für Allgemeine Pharmakologie und Toxikologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (K.V.B.); (R.F.C.); (N.J.A.); (A.K.S.)
| | - Sandra Trautmann
- Institut für Klinische Pharmakologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (S.T.); (N.F.)
| | - Nerea Ferreirós
- Institut für Klinische Pharmakologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (S.T.); (N.F.)
| | - Justin L. Black
- Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA;
| | - John J. G. Tesmer
- Departments of Biological Sciences and of Medicinal Chemistry and Molecular Pharmacology, Purdue University West Lafayette, West Lafayette, IN 47907-2054, USA;
| | - Stefan Offermanns
- Abteilung für Pharmakologie, Max-Planck-Institut für Herz- und Lungenforschung, 61231 Bad Nauheim, Germany;
| | - Thomas Wieland
- Experimentelle Pharmakologie Mannheim, European Center for Angioscience, Universität Heidelberg, 68167 Mannheim, Germany;
| | - Dagmar Meyer zu Heringdorf
- Institut für Allgemeine Pharmakologie und Toxikologie, Universitätsklinikum, Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (K.V.B.); (R.F.C.); (N.J.A.); (A.K.S.)
- Correspondence: ; Tel.: +49-69-6301-3906
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16
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Chen X, Zhu Y, Jijiwa M, Nasu M, Ai J, Dai S, Jiang B, Zhang J, Huang G, Deng Y. Identification of plasma lipid species as promising diagnostic markers for prostate cancer. BMC Med Inform Decis Mak 2020; 20:223. [PMID: 32967667 PMCID: PMC7513490 DOI: 10.1186/s12911-020-01242-7] [Citation(s) in RCA: 8] [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: 08/18/2020] [Accepted: 09/02/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Prostate cancer is a very common and highly fatal in men. Current non-invasive detection methods like serum biomarker are unsatisfactory. Biomarkers with high accuracy for diagnostic of prostate cancer are urgently needed. Many lipid species have been found related to various cancers. The purpose of our study is to explore the diagnostic value of lipids for prostate cancer. RESULTS Using triple quadruple liquid chromatography electrospray ionization tandem mass spectrometry, we performed lipidomics profiling of 367 lipids on a total 114 plasma samples from 30 patients with prostate cancer, 38 patients with benign prostatic hyperplasia (BPH), and 46 male healthy controls to evaluate the lipids as potential biomarkers in the diagnosis of prostate cancer. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database was used to construct the potential mechanism pathway. After statistical analysis, five lipids were identified as a panel of potential biomarkers for the detection of prostate cancer between prostate cancer group and the BPH group; the sensitivity, specificity, and area under curve (AUC) of the combination of these five lipids were 73.3, 81.6%, and 0.800, respectively. We also identified another panel of five lipids in distinguishing between prostate cancer group and the control group with predictive values of sensitivity at 76.7%, specificity at 80.4%, and AUC at 0.836, respectively. The glycerophospholipid metabolism pathway of the selected lipids was considered as the target pathway. CONCLUSIONS Our study indicated that the identified plasma lipid biomarkers have potential in the diagnosis of prostate cancer.
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Affiliation(s)
- Xiaoli Chen
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi China
- Department of Medicine, Rush University Medical Center, Chicago, IL USA
| | - Yong Zhu
- Department of Medicine, Rush University Medical Center, Chicago, IL USA
- National Medical Centre of Colorectal Disease, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Mayumi Jijiwa
- Bioinformatics Core, Department of Quantitative Health Sciences, University of Hawaii John A. Burns School of Medicine, Honolulu, HI USA
| | - Masaki Nasu
- Bioinformatics Core, Department of Quantitative Health Sciences, University of Hawaii John A. Burns School of Medicine, Honolulu, HI USA
| | - Junmei Ai
- Department of Medicine, Rush University Medical Center, Chicago, IL USA
| | - Shengming Dai
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi China
- Bioinformatics Core, Department of Quantitative Health Sciences, University of Hawaii John A. Burns School of Medicine, Honolulu, HI USA
| | - Bin Jiang
- National Medical Centre of Colorectal Disease, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Jicai Zhang
- Department of Laboratory Medicine, Shiyan Taihe Hospital, College of Biomedical Engineering, Hubei University of Medicine, Shiyan, Hubei 442000 P. R. China
| | - Gang Huang
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, 201318 P. R. China
| | - Youping Deng
- Bioinformatics Core, Department of Quantitative Health Sciences, University of Hawaii John A. Burns School of Medicine, Honolulu, HI USA
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17
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Hawkins CC, Ali T, Ramanadham S, Hjelmeland AB. Sphingolipid Metabolism in Glioblastoma and Metastatic Brain Tumors: A Review of Sphingomyelinases and Sphingosine-1-Phosphate. Biomolecules 2020; 10:E1357. [PMID: 32977496 PMCID: PMC7598277 DOI: 10.3390/biom10101357] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/18/2020] [Accepted: 09/20/2020] [Indexed: 01/05/2023] Open
Abstract
Glioblastoma (GBM) is a primary malignant brain tumor with a dismal prognosis, partially due to our inability to completely remove and kill all GBM cells. Rapid tumor recurrence contributes to a median survival of only 15 months with the current standard of care which includes maximal surgical resection, radiation, and temozolomide (TMZ), a blood-brain barrier (BBB) penetrant chemotherapy. Radiation and TMZ cause sphingomyelinases (SMase) to hydrolyze sphingomyelins to generate ceramides, which induce apoptosis. However, cells can evade apoptosis by converting ceramides to sphingosine-1-phosphate (S1P). S1P has been implicated in a wide range of cancers including GBM. Upregulation of S1P has been linked to the proliferation and invasion of GBM and other cancers that display a propensity for brain metastasis. To mediate their biological effects, SMases and S1P modulate signaling via phospholipase C (PLC) and phospholipase D (PLD). In addition, both SMase and S1P may alter the integrity of the BBB leading to infiltration of tumor-promoting immune populations. SMase activity has been associated with tumor evasion of the immune system, while S1P creates a gradient for trafficking of innate and adaptive immune cells. This review will explore the role of sphingolipid metabolism and pharmacological interventions in GBM and metastatic brain tumors with a focus on SMase and S1P.
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Affiliation(s)
- Cyntanna C. Hawkins
- Department of Cell, Developmental, and Integrative Biology, University of Birmingham at Alabama, Birmingham, AL 35233, USA; (C.C.H.); (S.R.)
| | - Tomader Ali
- Research Department, Imperial College London Diabetes Centre, Abu Dhabi P.O. Box 48338, UAE;
| | - Sasanka Ramanadham
- Department of Cell, Developmental, and Integrative Biology, University of Birmingham at Alabama, Birmingham, AL 35233, USA; (C.C.H.); (S.R.)
- Comprehensive Diabetes Center, University of Birmingham at Alabama, Birmingham, AL 35294, USA
| | - Anita B. Hjelmeland
- Department of Cell, Developmental, and Integrative Biology, University of Birmingham at Alabama, Birmingham, AL 35233, USA; (C.C.H.); (S.R.)
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18
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New Era of Diacylglycerol Kinase, Phosphatidic Acid and Phosphatidic Acid-Binding Protein. Int J Mol Sci 2020; 21:ijms21186794. [PMID: 32947951 PMCID: PMC7555651 DOI: 10.3390/ijms21186794] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 12/12/2022] Open
Abstract
Diacylglycerol kinase (DGK) phosphorylates diacylglycerol (DG) to generate phosphatidic acid (PA). Mammalian DGK consists of ten isozymes (α–κ) and governs a wide range of physiological and pathological events, including immune responses, neuronal networking, bipolar disorder, obsessive-compulsive disorder, fragile X syndrome, cancer, and type 2 diabetes. DG and PA comprise diverse molecular species that have different acyl chains at the sn-1 and sn-2 positions. Because the DGK activity is essential for phosphatidylinositol turnover, which exclusively produces 1-stearoyl-2-arachidonoyl-DG, it has been generally thought that all DGK isozymes utilize the DG species derived from the turnover. However, it was recently revealed that DGK isozymes, except for DGKε, phosphorylate diverse DG species, which are not derived from phosphatidylinositol turnover. In addition, various PA-binding proteins (PABPs), which have different selectivities for PA species, were recently found. These results suggest that DGK–PA–PABP axes can potentially construct a large and complex signaling network and play physiologically and pathologically important roles in addition to DGK-dependent attenuation of DG–DG-binding protein axes. For example, 1-stearoyl-2-docosahexaenoyl-PA produced by DGKδ interacts with and activates Praja-1, the E3 ubiquitin ligase acting on the serotonin transporter, which is a target of drugs for obsessive-compulsive and major depressive disorders, in the brain. This article reviews recent research progress on PA species produced by DGK isozymes, the selective binding of PABPs to PA species and a phosphatidylinositol turnover-independent DG supply pathway.
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19
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Armistead J, Hatzold J, van Roye A, Fahle E, Hammerschmidt M. Entosis and apical cell extrusion constitute a tumor-suppressive mechanism downstream of Matriptase. J Cell Biol 2020; 219:132730. [PMID: 31819976 PMCID: PMC7041680 DOI: 10.1083/jcb.201905190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 10/02/2019] [Accepted: 11/04/2019] [Indexed: 12/21/2022] Open
Abstract
Armistead et al. show that in a bilayered epithelium in vivo, apical cell extrusion of basal cells is achieved via their engulfment by surface cells. In zebrafish hai1a mutants, this constitutes a tumor-suppressive mechanism, revealing a double face of Matriptase. The type II transmembrane serine protease Matriptase 1 (ST14) is commonly known as an oncogene, yet it also plays an understudied role in suppressing carcinogenesis. This double face is evident in the embryonic epidermis of zebrafish loss-of-function mutants in the cognate Matriptase inhibitor Hai1a (Spint1a). Mutant embryos display epidermal hyperplasia, but also apical cell extrusions, during which extruding outer keratinocytes carry out an entosis-like engulfment and entrainment of underlying basal cells, constituting a tumor-suppressive effect. These counteracting Matriptase effects depend on EGFR and the newly identified mediator phospholipase D (PLD), which promotes both mTORC1-dependent cell proliferation and sphingosine-1-phosphate (S1P)–dependent entosis and apical cell extrusion. Accordingly, hypomorphic hai1a mutants heal spontaneously, while otherwise lethal hai1a amorphs are efficiently rescued upon cotreatment with PLD inhibitors and S1P. Together, our data elucidate the mechanisms underlying the double face of Matriptase function in vivo and reveal the potential use of combinatorial carcinoma treatments when such double-face mechanisms are involved.
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Affiliation(s)
- Joy Armistead
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Julia Hatzold
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Anna van Roye
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Evelin Fahle
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Matthias Hammerschmidt
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
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20
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Tang X, Benesch MGK, Brindley DN. Role of the autotaxin-lysophosphatidate axis in the development of resistance to cancer therapy. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158716. [PMID: 32305571 DOI: 10.1016/j.bbalip.2020.158716] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/31/2020] [Accepted: 04/09/2020] [Indexed: 12/17/2022]
Abstract
Autotaxin (ATX) is a secreted enzyme that hydrolyzes lysophosphatidylcholine to produce lysophosphatidate (LPA), which signals through six G-protein coupled receptors (GPCRs). Signaling through LPA is terminated by its degradation by a family of three lipid phosphate phosphatases (LPPs). LPP1 also attenuates signaling downstream of the activation of LPA receptors and some other GPCRs. The ATX-LPA axis mediates a plethora of activities such as cell proliferation, survival, migration, angiogenesis and inflammation, which perform an important role in facilitating wound healing. This wound healing response is hijacked by cancers where there is decreased expression of LPP1 and LPP3 and increased expression of ATX. This maladaptive regulation of LPA signaling also causes chronic inflammation, which has been recognized as one of the hallmarks in cancer. The increased LPA signaling promotes cell survival and migration and attenuates apoptosis, which stimulates tumor growth and metastasis. The wound healing functions of increased LPA signaling also protect cancer cells from effects of chemotherapy and radiotherapy. In this review, we will summarize knowledge of the ATX-LPA axis and its role in the development of resistance to chemotherapy and radiotherapy. We will also offer insights for developing strategies of targeting ATX-LPA axis as a novel part of cancer treatment. This article is part of a Special Issue entitled Lysophospholipids and their receptors: New data and new insights into their function edited by Susan Smyth, Viswanathan Natarajan and Colleen McMullen.
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Affiliation(s)
- Xiaoyun Tang
- Department of Biochemistry, University of Alberta, Edmonton T6G 2S2, Canada; Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Canada
| | - Matthew G K Benesch
- Department of Biochemistry, University of Alberta, Edmonton T6G 2S2, Canada; Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Canada; Discipline of Surgery, Faculty of Medicine, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3V6, Canada
| | - David N Brindley
- Department of Biochemistry, University of Alberta, Edmonton T6G 2S2, Canada; Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Canada.
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21
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Sah RK, Pati S, Saini M, Boopathi PA, Kochar SK, Kochar DK, Das A, Singh S. Reduction of Sphingosine Kinase 1 Phosphorylation and Activity in Plasmodium-Infected Erythrocytes. Front Cell Dev Biol 2020; 8:80. [PMID: 32195246 PMCID: PMC7062701 DOI: 10.3389/fcell.2020.00080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 01/29/2020] [Indexed: 01/11/2023] Open
Abstract
Sphingosine-1-phosphate (S1P), a bioactive lipid mediator is involved in an array of biological processes and linked to pathological manifestations. Erythrocyte is known as the major reservoir for S1P as they lack S1P-degrading enzymes (S1P lyase and S1P phosphohydrolase) and harbor sphingosine kinase-1 (SphK-1) essential for sphingosine conversion to S1P. Reduced S1P concentration in serum was correlated with disease severity in patients with Plasmodium falciparum and Plasmodium vivax infections. Herein, we aimed to identify the underlying mechanism and contribution of host erythrocytes toward depleted S1P levels in Plasmodium-infected patients vs. healthy individuals. The level and activity of SphK-1 were measured in vitro in both uninfected and cultured P. falciparum-infected erythrocytes. Infected erythrocytes demonstrated a significant decrease in SphK-1 level in a time-dependent manner. We found that 10–42 h post invasion (hpi), SphK1 level was predominantly reduced to ∼50% in rings, trophozoites, and schizonts compared to uninfected erythrocytes. We next analyzed the phosphorylation status of SphK-1, a modification responsible for its activity and S1P production, in both uninfected control and Plasmodium-infected erythrocytes. Almost ∼50% decrease in phosphorylation of SphK-1 was observed that could be corroborated with significant reduction in the production and release of S1P in infected erythrocytes. Serum S1P levels were studied in parallel in P. falciparum (N = 15), P. vivax (N = 36)-infected patients, and healthy controls (N = 6). The findings revealed that S1P concentration was significantly depleted in uncomplicated malaria cases and was found to be lowest in complicated malaria and thrombocytopenia in both P. falciparum and P. vivax-infected groups (∗∗p < 0.01). The lower serum S1P level could be correlated with the reduced platelet count defining the role of S1P level in platelet formation. In conclusion, erythrocyte SphK-1 and S1P levels were studied in Plasmodium-infected individuals and erythrocytes that helped in characterizing the complications associated with malaria and thrombocytopenia, providing insights into the contribution of host erythrocyte biology in malaria pathogenesis. Finally, this study proposes the use of S1P and its analog as a novel adjunct therapy for malaria complications.
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Affiliation(s)
- Raj Kumar Sah
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Soumya Pati
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Greater Noida, India
| | - Monika Saini
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India.,Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Greater Noida, India
| | | | | | | | - Ashis Das
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, India
| | - Shailja Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
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22
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Ahmmed MK, Ahmmed F, Tian HS, Carne A, Bekhit AED. Marine omega-3 (n-3) phospholipids: A comprehensive review of their properties, sources, bioavailability, and relation to brain health. Compr Rev Food Sci Food Saf 2019; 19:64-123. [PMID: 33319514 DOI: 10.1111/1541-4337.12510] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/06/2019] [Accepted: 10/27/2019] [Indexed: 12/15/2022]
Abstract
For several decades, there has been considerable interest in marine-derived long chain n-3 fatty acids (n-3 LCPUFAs) due to their outstanding health benefits. n-3 LCPUFAs can be found in nature either in triglycerides (TAGs) or in phospholipid (PL) form. From brain health point of view, PL n-3 is more bioavailable and potent compared to n-3 in TAG form, as only PL n-3 is able to cross the blood-brain barrier and can be involved in brain biochemical reactions. However, PL n-3 has been ignored in the fish oil industry and frequently removed as an impurity during degumming processes. As a result, PL products derived from marine sources are very limited compared to TAG products. Commercially, PLs are being used in pharmaceutical industries as drug carriers, in food manufacturing as emulsifiers and in cosmetic industries as skin care agents, but most of the PLs used in these applications are produced from vegetable sources that contain less (without EPA, DPA, and DHA) or sometimes no n-3 LCPUFAs. This review provides a comprehensive account of the properties, structures, and major sources of marine PLs, and provides focussed discussion of their relationship to brain health. Epidemiological, laboratory, and clinical studies on n-3 LCPUFAs enriched PLs using different model systems in relation to brain and mental health that have been published over the past few years are discussed in detail.
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Affiliation(s)
- Mirja Kaizer Ahmmed
- Department of Food Science, University of Otago, Dunedin, New Zealand.,Department of Fishing and Post-Harvest Technology, Faculty of Fisheries, Chittagong Veterinary and Animal Sciences University, Khulshi, Bangladesh
| | - Fatema Ahmmed
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | | | - Alan Carne
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
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23
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Activation of sphingosine kinase by lipopolysaccharide promotes prostate cancer cell invasion and metastasis via SphK1/S1PR4/matriptase. Oncogene 2019; 38:5580-5598. [DOI: 10.1038/s41388-019-0833-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 02/23/2019] [Accepted: 02/28/2019] [Indexed: 02/06/2023]
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24
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Suryadevara V, Huang L, Kim SJ, Cheresh P, Shaaya M, Bandela M, Fu P, Feghali-Bostwick C, Di Paolo G, Kamp DW, Natarajan V. Role of phospholipase D in bleomycin-induced mitochondrial reactive oxygen species generation, mitochondrial DNA damage, and pulmonary fibrosis. Am J Physiol Lung Cell Mol Physiol 2019; 317:L175-L187. [PMID: 31090437 DOI: 10.1152/ajplung.00320.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a pernicious lung disease characterized by alveolar epithelial apoptosis, dysregulated repair of epithelial injury, scar formation, and respiratory failure. In this study, we identified phospholipase D (PLD)-generated phosphatidic acid (PA) signaling in the development of pulmonary fibrosis (PF). Of the PLD isoenzymes, the protein expression of PLD2, but not PLD1, was upregulated in lung tissues from IPF patients and bleomycin challenged mice. Both PLD1 (Pld1-/-)- and PLD2 (Pld2-/-)-deficient mice were protected against bleomycin-induced lung inflammation and fibrosis, thereby establishing the role of PLD in fibrogenesis. The role of PLD1 and PLD2 in bleomycin-induced lung epithelial injury was investigated by infecting bronchial airway epithelial cells (Beas2B) with catalytically inactive mutants of PLD (hPLD1-K898R or mPld2-K758R) or downregulation of expression of PLD1 or PLD2 with siRNA. Bleomycin stimulated mitochondrial (mt) superoxide production, mtDNA damage, and apoptosis in Beas2B cells, which was attenuated by the catalytically inactive mutants of PLD or PLD2 siRNA. These results show a role for PLD1 and PLD2 in bleomycin-induced generation of mt reactive oxygen species, mt DNA damage, and apoptosis of lung epithelial cells in mice. Thus, PLD may be a novel therapeutic target in ameliorating experimental PF in mice.
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Affiliation(s)
- Vidyani Suryadevara
- Department of Bioengineering, University of Illinois at Chicago , Chicago, Illinois
| | - Longshuang Huang
- Department of Pharmacology, University of Illinois at Chicago , Chicago, Illinois
| | - Seok-Jo Kim
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine and the Jesse Brown VA Medical Center , Chicago, Illinois
| | - Paul Cheresh
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine and the Jesse Brown VA Medical Center , Chicago, Illinois
| | - Mark Shaaya
- Department of Pharmacology, University of Illinois at Chicago , Chicago, Illinois
| | - Mounica Bandela
- Department of Bioengineering, University of Illinois at Chicago , Chicago, Illinois
| | - Panfeng Fu
- Department of Pharmacology, University of Illinois at Chicago , Chicago, Illinois
| | | | - Gilbert Di Paolo
- Department of Pathology and Cell Biology, Columbia University Medical Center , New York, New York
| | - David W Kamp
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine and the Jesse Brown VA Medical Center , Chicago, Illinois
| | - Viswanathan Natarajan
- Department of Pharmacology, University of Illinois at Chicago , Chicago, Illinois.,Department of Medicine, University of Illinois at Chicago , Chicago, Illinois
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25
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Distinct phospholipid and sphingolipid species are linked to altered HDL function in apolipoprotein A-I deficiency. J Clin Lipidol 2019; 13:468-480.e8. [PMID: 31003938 DOI: 10.1016/j.jacl.2019.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 01/10/2019] [Accepted: 02/18/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Familial apolipoprotein A-I (apoA-I) deficiency (FAID) involving low levels of both apoA-I and high-density lipoprotein (HDL) cholesterol is associated with accelerated atherosclerosis. OBJECTIVE The objective of this study was to define distinctive patterns in the lipidome of HDL subpopulations in FAID in relationship to antiatherogenic activities. METHODS Five HDL subfractions were isolated by ultracentrifugation from plasma of FAID Caucasian patients (n = 5) and age-matched healthy normolipidemic Caucasian controls (n = 8), and the HDL lipidome (160 molecular species of 9 classes of phospholipids and sphingolipids) was quantitatively evaluated. RESULTS Increased concentrations of numerous molecular species of lysophosphatidylcholine (up to 12-fold), ceramides (up to 3-fold), phosphatidylserine (up to 34-fold), phosphatidic acid (up to 71-fold), and phosphatidylglycerol (up to 20-fold) were detected throughout all five HDL subpopulations as compared with their counterparts from controls, whereas concentrations of phosphatidylethanolamine species were decreased (up to 5-fold). Moderately to highly abundant, within their lipid class, species of phosphatidylcholine, sphingomyelin, phosphatidylinositol, phosphatidylethanolamine, phosphatidylserine, and ceramide featuring multiple unsaturations were primarily affected by apoA-I deficiency; their HDL content, particularly that of phosphatidylcholine (34:2), was strongly correlated with HDL function, impaired in FAID. Metabolic pathway analysis revealed that sphingolipid, glycerophospholipid, and linoleic acid metabolism was significantly affected by FAID. CONCLUSION These data reveal that altered content of specific phospholipid and sphingolipid species is linked to deficient antiatherogenic properties of HDL in FAID.
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26
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Vázquez L, Corzo-Martínez M, Arranz-Martínez P, Barroso E, Reglero G, Torres C. Bioactive Lipids. BIOACTIVE MOLECULES IN FOOD 2019. [DOI: 10.1007/978-3-319-78030-6_58] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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27
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Nishino S, Yamashita H, Tamori M, Mashimo M, Yamagata K, Nakamura H, Murayama T. Translocation and activation of sphingosine kinase 1 by ceramide‐1‐phosphate. J Cell Biochem 2018; 120:5396-5408. [DOI: 10.1002/jcb.27818] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/12/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Shohei Nishino
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
| | - Hisahiro Yamashita
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
| | - Mizuki Tamori
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
| | - Masato Mashimo
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts Kyoto Japan
| | - Kazuyuki Yamagata
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
- Laboratory of International Scholars in Pharmaceuticals in Systems Biology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
| | - Hiroyuki Nakamura
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
| | - Toshihiko Murayama
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University Chiba Japan
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28
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Hakuno D, Kimura M, Ito S, Satoh J, Nakashima Y, Horie T, Kuwabara Y, Nishiga M, Ide Y, Baba O, Nishi H, Nakao T, Nishino T, Nakazeki F, Koyama S, Hanada R, Randolph RR, Endo J, Kimura T, Ono K. Hepatokine α1-Microglobulin Signaling Exacerbates Inflammation and Disturbs Fibrotic Repair in Mouse Myocardial Infarction. Sci Rep 2018; 8:16749. [PMID: 30425314 PMCID: PMC6233179 DOI: 10.1038/s41598-018-35194-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 10/30/2018] [Indexed: 12/31/2022] Open
Abstract
Acute cardiac rupture and adverse left ventricular (LV) remodeling causing heart failure are serious complications of acute myocardial infarction (MI). While cardio-hepatic interactions have been recognized, their role in MI remains unknown. We treated cultured cardiomyocytes with conditioned media from various cell types and analyzed the media by mass spectrometry to identify α1-microglobulin (AM) as an Akt-activating hepatokine. In mouse MI model, AM protein transiently distributed in the infarct and border zones during the acute phase, reflecting infiltration of AM-bound macrophages. AM stimulation activated Akt, NFκB, and ERK signaling and enhanced inflammation as well as macrophage migration and polarization, while inhibited fibrogenesis-related mRNA expression in cultured macrophages and cardiac fibroblasts. Intramyocardial AM administration exacerbated macrophage infiltration, inflammation, and matrix metalloproteinase 9 mRNA expression in the infarct and border zones, whereas disturbed fibrotic repair, then provoked acute cardiac rupture in MI. Shotgun proteomics and lipid pull-down analysis found that AM partly binds to phosphatidic acid (PA) for its signaling and function. Furthermore, systemic delivery of a selective inhibitor of diacylglycerol kinase α-mediated PA synthesis notably reduced macrophage infiltration, inflammation, matrix metalloproteinase activity, and adverse LV remodeling in MI. Therefore, targeting AM signaling could be a novel pharmacological option to mitigate adverse LV remodeling in MI.
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Affiliation(s)
- Daihiko Hakuno
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Masahiro Kimura
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shinji Ito
- Medical Research Support Center, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Junko Satoh
- Medical Research Support Center, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yasuhiro Nakashima
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Takahiro Horie
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yasuhide Kuwabara
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Masataka Nishiga
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuya Ide
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Osamu Baba
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hitoo Nishi
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tetsushi Nakao
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tomohiro Nishino
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Fumiko Nakazeki
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Satoshi Koyama
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ritsuko Hanada
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ruiz R Randolph
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Jin Endo
- Cardiovascular Division, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takeshi Kimura
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Koh Ono
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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29
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Pichler H, Emmerstorfer-Augustin A. Modification of membrane lipid compositions in single-celled organisms – From basics to applications. Methods 2018; 147:50-65. [DOI: 10.1016/j.ymeth.2018.06.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/18/2018] [Accepted: 06/16/2018] [Indexed: 12/12/2022] Open
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30
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Pulkoski-Gross MJ, Obeid LM. Molecular mechanisms of regulation of sphingosine kinase 1. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:1413-1422. [PMID: 30591148 DOI: 10.1016/j.bbalip.2018.08.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 01/08/2023]
Abstract
Within the last 3 decades, there has been intense study of bioactive sphingolipids and the enzymes which metabolize those lipids. One enzyme is the critical lipid kinase sphingosine kinase 1 (SK1), which produces the potent and pleiotropic signaling lipid, sphingosine 1-phosphate (S1P). SK1 and S1P have been implicated in a host of different diseases including cancer, chronic inflammation, and metabolic diseases. However, while there is ample knowledge about the importance of these molecules in the development and progression of disease there is a dearth of knowledge of the molecular mechanisms which regulate SK1 function. In this review, we will cover some of the more recent and exciting findings about the different ways SK1 function can be regulated, from transcriptional regulation to protein stability. Finally, we will delve into recent structural insights into SK1 and how they might relate to function at cell membranes.
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Affiliation(s)
- Michael J Pulkoski-Gross
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA; Department of Medicine, The Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790, USA.
| | - Lina M Obeid
- Department of Medicine, The Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790, USA; Northport Veterans Affairs Medical Center, Northport, NY 11768, USA.
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31
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Stahelin RV. The unmasking of the lipid binding face of sphingosine kinase 1. J Lipid Res 2018; 59:401-403. [DOI: 10.1194/jlr.c083907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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32
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Pulkoski-Gross MJ, Jenkins ML, Truman JP, Salama MF, Clarke CJ, Burke JE, Hannun YA, Obeid LM. An intrinsic lipid-binding interface controls sphingosine kinase 1 function. J Lipid Res 2018; 59:462-474. [PMID: 29326159 DOI: 10.1194/jlr.m081307] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 01/04/2018] [Indexed: 12/15/2022] Open
Abstract
Sphingosine kinase 1 (SK1) is required for production of sphingosine-1-phosphate (S1P) and thereby regulates many cellular processes, including cellular growth, immune cell trafficking, and inflammation. To produce S1P, SK1 must access sphingosine directly from membranes. However, the molecular mechanisms underlying SK1's direct membrane interactions remain unclear. We used hydrogen/deuterium exchange MS to study interactions of SK1 with membrane vesicles. Using the CRISPR/Cas9 technique to generate HCT116 cells lacking SK1, we explored the effects of membrane interface disruption and the function of the SK1 interaction site. Disrupting the interface resulted in reduced membrane association and decreased cellular SK1 activity. Moreover, SK1-dependent signaling, including cell invasion and endocytosis, was abolished upon mutation of the membrane-binding interface. Of note, we identified a positively charged motif on SK1 that is responsible for electrostatic interactions with membranes. Furthermore, we demonstrated that SK1 uses a single contiguous interface, consisting of an electrostatic site and a hydrophobic site, to interact with membrane-associated anionic phospholipids. Altogether, these results define a composite domain in SK1 that regulates its intrinsic ability to bind membranes and indicate that this binding is critical for proper SK1 function. This work will allow for a new line of thinking for targeting SK1 in disease.
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Affiliation(s)
- Michael J Pulkoski-Gross
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790.,Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790
| | - Meredith L Jenkins
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia V8N 1A1, Canada
| | - Jean-Philip Truman
- Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790
| | - Mohamed F Salama
- Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35511, Egypt
| | - Christopher J Clarke
- Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790
| | - John E Burke
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia V8N 1A1, Canada
| | - Yusuf A Hannun
- Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790
| | - Lina M Obeid
- Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11790 .,Northport Veterans Affairs Medical Center, Northport, NY 11768
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"Dicing and Splicing" Sphingosine Kinase and Relevance to Cancer. Int J Mol Sci 2017; 18:ijms18091891. [PMID: 28869494 PMCID: PMC5618540 DOI: 10.3390/ijms18091891] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/29/2017] [Accepted: 08/29/2017] [Indexed: 02/06/2023] Open
Abstract
Sphingosine kinase (SphK) is a lipid enzyme that maintains cellular lipid homeostasis. Two SphK isozymes, SphK1 and SphK2, are expressed from different chromosomes and several variant isoforms are expressed from each of the isozymes, allowing for the multi-faceted biological diversity of SphK activity. Historically, SphK1 is mainly associated with oncogenicity, however in reality, both SphK1 and SphK2 isozymes possess oncogenic properties and are recognized therapeutic targets. The absence of mutations of SphK in various cancer types has led to the theory that cancer cells develop a dependency on SphK signaling (hyper-SphK signaling) or “non-oncogenic addiction”. Here we discuss additional theories of SphK cellular mislocation and aberrant “dicing and splicing” as contributors to cancer cell biology and as key determinants of the success or failure of SphK/S1P (sphingosine 1 phosphate) based therapeutics.
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Rodriguez-Cuenca S, Pellegrinelli V, Campbell M, Oresic M, Vidal-Puig A. Sphingolipids and glycerophospholipids - The "ying and yang" of lipotoxicity in metabolic diseases. Prog Lipid Res 2017; 66:14-29. [PMID: 28104532 DOI: 10.1016/j.plipres.2017.01.002] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 11/30/2016] [Accepted: 01/05/2017] [Indexed: 12/14/2022]
Abstract
Sphingolipids in general and ceramides in particular, contribute to pathophysiological mechanisms by modifying signalling and metabolic pathways. Here, we present the available evidence for a bidirectional homeostatic crosstalk between sphingolipids and glycerophospholipids, whose dysregulation contributes to lipotoxicity induced metabolic stress. The initial evidence for this crosstalk originates from simulated models designed to investigate the biophysical properties of sphingolipids in plasma membrane representations. In this review, we reinterpret some of the original findings and conceptualise them as a sort of "ying/yang" interaction model of opposed/complementary forces, which is consistent with the current knowledge of lipid homeostasis and pathophysiology. We also propose that the dysregulation of the balance between sphingolipids and glycerophospholipids results in a lipotoxic insult relevant in the pathophysiology of common metabolic diseases, typically characterised by their increased ceramide/sphingosine pools.
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Affiliation(s)
- S Rodriguez-Cuenca
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge. Cambridge, UK.
| | - V Pellegrinelli
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge. Cambridge, UK
| | - M Campbell
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge. Cambridge, UK
| | - M Oresic
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, FI -20520 Turku, Finland
| | - A Vidal-Puig
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge. Cambridge, UK; Wellcome Trust Sanger Institute, Hinxton, UK.
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35
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Philip F, Ha EE, Seeliger MA, Frohman MA. Measuring Phospholipase D Enzymatic Activity Through Biochemical and Imaging Methods. Methods Enzymol 2016; 583:309-325. [PMID: 28063496 DOI: 10.1016/bs.mie.2016.09.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The phospholipase D (PLD) enzymatic superfamily regulates a wide range of cell biological and physiological pathways, including platelet activation, immune responses, cancer, and spermatogenesis. The three main enzymatic actions of the superfamily entail (i) hydrolyzing membrane phospholipids (phosphatidylcholine (PC) and cardiolipin) to generate choline and the second messenger signaling lipid phosphatidic acid (PA), (ii) using ethanol to transphosphatidylate PC to generate the long-lived metabolite phosphatidylethanol, and (iii) hydrolyzing RNA transcripts to generate piRNAs, the third form of endogenous RNAi. We discuss briefly previously published methods for in vitro and in vivo detection and imaging of PA, and focus on production, purification, and in vitro endonuclease activity analysis for human PLD6, a mitochondrial-tethered isoform with roles in fertility, cancer, and neuronal homeostasis.
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Affiliation(s)
- F Philip
- Center for Developmental Genetics, Stony Brook University School of Medicine, Stony Brook, NY, United States
| | - E E Ha
- Center for Developmental Genetics, Stony Brook University School of Medicine, Stony Brook, NY, United States
| | - M A Seeliger
- Center for Developmental Genetics, Stony Brook University School of Medicine, Stony Brook, NY, United States
| | - M A Frohman
- Center for Developmental Genetics, Stony Brook University School of Medicine, Stony Brook, NY, United States.
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36
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Sphingosine Kinases: Emerging Structure-Function Insights. Trends Biochem Sci 2016; 41:395-409. [PMID: 27021309 DOI: 10.1016/j.tibs.2016.02.007] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/08/2016] [Accepted: 02/17/2016] [Indexed: 12/15/2022]
Abstract
Sphingosine kinases (SK1 and SK2) catalyse the conversion of sphingosine into sphingosine 1-phosphate and control fundamental cellular processes, including cell survival, proliferation, differentiation, migration, and immune function. In this review, we highlight recent breakthroughs in the structural and functional characterisation of SK1 and these are contextualised by analysis of crystal structures for closely related prokaryotic lipid kinases. We identify a putative dimerisation interface and propose novel regulatory mechanisms governing structural plasticity induced by phosphorylation and interaction with phospholipids and proteins. Our analysis suggests that the catalytic function and regulation of the enzymes might be dependent on conformational mobility and it provides a roadmap for future interrogation of SK1 function and its role in physiology and disease.
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37
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Bouquerel P, Gstalder C, Müller D, Laurent J, Brizuela L, Sabbadini RA, Malavaud B, Pyronnet S, Martineau Y, Ader I, Cuvillier O. Essential role for SphK1/S1P signaling to regulate hypoxia-inducible factor 2α expression and activity in cancer. Oncogenesis 2016; 5:e209. [PMID: 26974204 PMCID: PMC4815047 DOI: 10.1038/oncsis.2016.13] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 12/21/2015] [Accepted: 01/26/2016] [Indexed: 12/26/2022] Open
Abstract
The sphingosine kinase-1/sphingosine 1-phosphate (SphK1/S1P) signaling pathway has been reported to modulate the expression of the canonical transcription factor hypoxia-inducible HIF-1α in multiple cell lineages. HIF-2α is also frequently overexpressed in solid tumors but its role has been mostly studied in clear cell renal cell carcinoma (ccRCC), the most common form of kidney cancer, where HIF-2α has been established as a driver of a more aggressive disease. In this study, the role of SphK1/S1P signaling with regard to HIF-2α was investigated in various cancer cell models including ccRCC cells. Under hypoxic conditions or in ccRCC lacking a functional von Hippel-Lindau (VHL) gene and expressing high levels of HIF-2α, SphK1 activity controls HIF-2α expression and transcriptional activity through a phospholipase D (PLD)-driven mechanism. SphK1 silencing promotes a VHL-independent HIF-2α loss of expression and activity and reduces cell proliferation in ccRCC. Importantly, downregulation of SphK1 is associated with impaired Akt and mTOR signaling in ccRCC. Taking advantage of a monoclonal antibody neutralizing extracellular S1P, we show that inhibition of S1P extracellular signaling blocks HIF-2α accumulation in ccRCC cell lines, an effect mimicked when the S1P transporter Spns2 or the S1P receptor 1 (S1P1) is silenced. Here, we report the first evidence that the SphK1/S1P signaling pathway regulates the transcription factor hypoxia-inducible HIF-2α in diverse cancer cell lineages notably ccRCC, where HIF-2α has been established as a driver of a more aggressive disease. These findings demonstrate that SphK1/S1P signaling may act as a canonical regulator of HIF-2α expression in ccRCC, giving support to its inhibition as a therapeutic strategy that could contribute to reduce HIF-2 activity in ccRCC.
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Affiliation(s)
- P Bouquerel
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France
| | - C Gstalder
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France
| | - D Müller
- Equipe Labellisée Ligue contre le Cancer, Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer (TOUCAN), INSERM UMR-1037, Cancer Research Center of Toulouse (CRCT), Université de Toulouse, Toulouse, France
| | - J Laurent
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France
| | - L Brizuela
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France
| | | | - B Malavaud
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France.,Institut Universitaire du Cancer Toulouse Oncopôle, Toulouse, France
| | - S Pyronnet
- Equipe Labellisée Ligue contre le Cancer, Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer (TOUCAN), INSERM UMR-1037, Cancer Research Center of Toulouse (CRCT), Université de Toulouse, Toulouse, France
| | - Y Martineau
- Laboratoire d'Excellence Toulouse Cancer (TOUCAN), INSERM UMR-1037, Cancer Research Center of Toulouse (CRCT), Université de Toulouse, Toulouse, France
| | - I Ader
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France
| | - O Cuvillier
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France.,Université de Toulouse, UPS, IPBS, Toulouse, France.,Equipe Labellisée Ligue contre le Cancer, Toulouse, France
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38
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The Potential Biomarkers to Identify the Development of Steatosis in Hyperuricemia. PLoS One 2016; 11:e0149043. [PMID: 26890003 PMCID: PMC4758628 DOI: 10.1371/journal.pone.0149043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 01/25/2016] [Indexed: 01/01/2023] Open
Abstract
Hyperuricemia (HU) often progresses to combine with non-alcoholic fatty liver disease (NAFLD) in the clinical scenario, which further exacerbates metabolic disorders; early detection of biomarkers, if obtained during the HU progression, may be beneficial for preventing its combination with NAFLD. This study aimed to decipher the biomarkers and mechanisms of the development of steatosis in HU. Four groups of subjects undergoing health screening, including healthy subjects, subjects with HU, subjects with HU combined with NAFLD (HU+NAFLD) and subjects with HU initially and then with HU+NAFLD one year later (HU→HU+NAFLD), were recruited in this study. The metabolic profiles of all subjects' serum were analyzed by liquid chromatography quadruple time-of-flight mass spectrometry. The metabolomic data from subjects with HU and HU+NAFLD were compared, and the biomarkers for the progression from HU to HU+NAFLD were predicted. The metabolomic data from HU→HU+NAFLD subjects were collected for further verification. The results showed that the progression was associated with disturbances of phospholipase metabolism, purine nucleotide degradation and Liver X receptor/retinoic X receptor activation as characterized by up-regulated phosphatidic acid, cholesterol ester (18:0) and down-regulated inosine. These metabolic alterations may be at least partially responsible for the development of steatosis in HU. This study provides a new paradigm for better understanding and further prevention of disease progression.
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Bruntz RC, Lindsley CW, Brown HA. Phospholipase D signaling pathways and phosphatidic acid as therapeutic targets in cancer. Pharmacol Rev 2015; 66:1033-79. [PMID: 25244928 DOI: 10.1124/pr.114.009217] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Phospholipase D is a ubiquitous class of enzymes that generates phosphatidic acid as an intracellular signaling species. The phospholipase D superfamily plays a central role in a variety of functions in prokaryotes, viruses, yeast, fungi, plants, and eukaryotic species. In mammalian cells, the pathways modulating catalytic activity involve a variety of cellular signaling components, including G protein-coupled receptors, receptor tyrosine kinases, polyphosphatidylinositol lipids, Ras/Rho/ADP-ribosylation factor GTPases, and conventional isoforms of protein kinase C, among others. Recent findings have shown that phosphatidic acid generated by phospholipase D plays roles in numerous essential cellular functions, such as vesicular trafficking, exocytosis, autophagy, regulation of cellular metabolism, and tumorigenesis. Many of these cellular events are modulated by the actions of phosphatidic acid, and identification of two targets (mammalian target of rapamycin and Akt kinase) has especially highlighted a role for phospholipase D in the regulation of cellular metabolism. Phospholipase D is a regulator of intercellular signaling and metabolic pathways, particularly in cells that are under stress conditions. This review provides a comprehensive overview of the regulation of phospholipase D activity and its modulation of cellular signaling pathways and functions.
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Affiliation(s)
- Ronald C Bruntz
- Department of Pharmacology (R.C.B., C.W.L., H.A.B.) and Vanderbilt Center for Neuroscience Drug Discovery (C.W.L.), Vanderbilt University Medical Center; Department of Chemistry, Vanderbilt Institute of Chemical Biology (C.W.L., H.A.B.); Vanderbilt Specialized Chemistry for Accelerated Probe Development (C.W.L.); and Department of Biochemistry, Vanderbilt-Ingram Cancer Center (H.A.B.), Vanderbilt University, Nashville, Tennessee
| | - Craig W Lindsley
- Department of Pharmacology (R.C.B., C.W.L., H.A.B.) and Vanderbilt Center for Neuroscience Drug Discovery (C.W.L.), Vanderbilt University Medical Center; Department of Chemistry, Vanderbilt Institute of Chemical Biology (C.W.L., H.A.B.); Vanderbilt Specialized Chemistry for Accelerated Probe Development (C.W.L.); and Department of Biochemistry, Vanderbilt-Ingram Cancer Center (H.A.B.), Vanderbilt University, Nashville, Tennessee
| | - H Alex Brown
- Department of Pharmacology (R.C.B., C.W.L., H.A.B.) and Vanderbilt Center for Neuroscience Drug Discovery (C.W.L.), Vanderbilt University Medical Center; Department of Chemistry, Vanderbilt Institute of Chemical Biology (C.W.L., H.A.B.); Vanderbilt Specialized Chemistry for Accelerated Probe Development (C.W.L.); and Department of Biochemistry, Vanderbilt-Ingram Cancer Center (H.A.B.), Vanderbilt University, Nashville, Tennessee
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40
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Rogasevskaia TP, Coorssen JR. The Role of Phospholipase D in Regulated Exocytosis. J Biol Chem 2015; 290:28683-96. [PMID: 26433011 DOI: 10.1074/jbc.m115.681429] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Indexed: 11/06/2022] Open
Abstract
There are a diversity of interpretations concerning the possible roles of phospholipase D and its biologically active product phosphatidic acid in the late, Ca(2+)-triggered steps of regulated exocytosis. To quantitatively address functional and molecular aspects of the involvement of phospholipase D-derived phosphatidic acid in regulated exocytosis, we used an array of phospholipase D inhibitors for ex vivo and in vitro treatments of sea urchin eggs and isolated cortices and cortical vesicles, respectively, to study late steps of exocytosis, including docking/priming and fusion. The experiments with fluorescent phosphatidylcholine reveal a low level of phospholipase D activity associated with cortical vesicles but a significantly higher activity on the plasma membrane. The effects of phospholipase D activity and its product phosphatidic acid on the Ca(2+) sensitivity and rate of fusion correlate with modulatory upstream roles in docking and priming rather than to direct effects on fusion per se.
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Affiliation(s)
| | - Jens R Coorssen
- Department of Molecular Physiology, School of Medicine and the Molecular Medicine Research Group, Western Sydney University, Penrith NSW 2751, Australia
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41
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Xie M, Roy R. The Causative Gene in Chanarian Dorfman Syndrome Regulates Lipid Droplet Homeostasis in C. elegans. PLoS Genet 2015; 11:e1005284. [PMID: 26083785 PMCID: PMC4470697 DOI: 10.1371/journal.pgen.1005284] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 05/14/2015] [Indexed: 11/19/2022] Open
Abstract
AMP-activated kinase (AMPK) is a key regulator of many cellular mechanisms required for adjustment to various stresses induced by the changing environment. In C. elegans dauer larvae AMPK-null mutants expire prematurely due to hyperactive Adipose Triglyceride Lipase (ATGL-1) followed by rapid depletion of triglyceride stores. We found that the compromise of one of the three C. elegans orthologues of human cgi-58 significantly improves the survival of AMPK-deficient dauers. We also provide evidence that C. elegans CGI-58 acts as a co-activator of ATGL-1, while it also functions cooperatively to maintain regular lipid droplet structure. Surprisingly, we show that it also acts independently of ATGL-1 to restrict lipid droplet coalescence by altering the surface abundance and composition of long chain (C20) polyunsaturated fatty acids (PUFAs). Our data reveal a novel structural role of CGI-58 in maintaining lipid droplet homeostasis through its effects on droplet composition, morphology and lipid hydrolysis; a conserved function that may account for some of the ATGL-1-independent features unique to Chanarin-Dorfman Syndrome. Chanarin-Dorfman Syndrome (CDS) is a rare metabolic disease characterized by an abnormal accumulation of lipids in various tissues and organs due to a failure in lipid breakdown. Characteristic clinical features exhibited by affected patients include scaly skin (ichthyosis), enlarged liver, blurred vision among others. CDS is caused by mutation of the cgi-58 gene, which is essential for lipid breakdown, but may also have additional cellular functions. Here, we demonstrate that in C. elegans CGI-58 acts both as a key player in lipid breakdown, but it is also required to maintain the barrier that defines the size, shape and catalytic efficacy of the major lipid storage site-the lipid droplets. We provide a genetically tractable animal model of CDS that reproduces many of the defects observed in affected CDS individuals.
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Affiliation(s)
- Meng Xie
- Department of Biology, McGill University, Penfield, Montreal, Quebec, Canada
| | - Richard Roy
- Department of Biology, McGill University, Penfield, Montreal, Quebec, Canada
- * E-mail:
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42
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Carroll B, Donaldson JC, Obeid L. Sphingolipids in the DNA damage response. Adv Biol Regul 2014; 58:38-52. [PMID: 25434743 DOI: 10.1016/j.jbior.2014.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 12/16/2022]
Abstract
Recently, sphingolipid metabolizing enzymes have emerged as important targets of many chemotherapeutics and DNA damaging agents and therefore play significant roles in mediating the physiological response of the cell to DNA damage. In this review we will highlight points of connection between the DNA damage response (DDR) and sphingolipid metabolism; specifically how certain sphingolipid enzymes are regulated in response to DNA damage and how the bioactive lipids produced by these enzymes affect cell fate.
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Affiliation(s)
- Brittany Carroll
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Jane Catalina Donaldson
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Lina Obeid
- Northport VA Medical Center, Northport, NY 11768, USA; Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA.
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43
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Gomez-Cambronero J. Phospholipase D in cell signaling: from a myriad of cell functions to cancer growth and metastasis. J Biol Chem 2014; 289:22557-22566. [PMID: 24990944 PMCID: PMC4132763 DOI: 10.1074/jbc.r114.574152] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Phospholipase D (PLD) enzymes play a double vital role in cells: they maintain the integrity of cellular membranes and they participate in cell signaling including intracellular protein trafficking, cytoskeletal dynamics, cell migration, and cell proliferation. The particular involvement of PLD in cell migration is accomplished: (a) through the actions of its enzymatic product of reaction, phosphatidic acid, and its unique shape-binding role on membrane geometry; (b) through a particular guanine nucleotide exchange factor (GEF) activity (the first of its class assigned to a phospholipase) in the case of the mammalian isoform PLD2; and (c) through protein-protein interactions with a wide network of molecules: Wiskott-Aldrich syndrome protein (WASp), Grb2, ribosomal S6 kinase (S6K), and Rac2. Further, PLD interacts with a variety of kinases (PKC, FES, EGF receptor (EGFR), and JAK3) that are activated by it, or PLD becomes the target substrate. Out of these myriads of functions, PLD is becoming recognized as a major player in cell migration, cell invasion, and cancer metastasis. This is the story of the evolution of PLD from being involved in a large number of seemingly unrelated cellular functions to its most recent role in cancer signaling, a subfield that is expected to grow exponentially.
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Affiliation(s)
- Julian Gomez-Cambronero
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University School of Medicine, Dayton, Ohio 45435.
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44
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Shen H, Giordano F, Wu Y, Chan J, Zhu C, Milosevic I, Wu X, Yao K, Chen B, Baumgart T, Sieburth D, De Camilli P. Coupling between endocytosis and sphingosine kinase 1 recruitment. Nat Cell Biol 2014; 16:652-62. [PMID: 24929359 PMCID: PMC4230894 DOI: 10.1038/ncb2987] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 05/09/2014] [Indexed: 12/13/2022]
Abstract
Genetic studies have suggested a functional link between cholesterol/sphingolipid metabolism and endocytic membrane traffic. Here we show that perturbing the cholesterol/sphingomyelin balance in the plasma membrane results in the massive formation of clusters of narrow endocytic tubular invaginations positive for N-BAR proteins. These tubules are intensely positive for sphingosine kinase 1 (SPHK1). SPHK1 is also targeted to physiologically occurring early endocytic intermediates, and is highly enriched in nerve terminals, which are cellular compartments specialized for exo/endocytosis. Membrane recruitment of SPHK1 involves a direct, curvature-sensitive interaction with the lipid bilayer mediated by a hydrophobic patch on the enzyme's surface. The knockdown of SPHKs results in endocytic recycling defects, and a mutation that disrupts the hydrophobic patch of Caenorhabditis elegans SPHK fails to rescue the neurotransmission defects in loss-of-function mutants of this enzyme. Our studies support a role for sphingosine phosphorylation in endocytic membrane trafficking beyond the established function of sphingosine-1-phosphate in intercellular signalling.
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Affiliation(s)
- Hongying Shen
- 1] Howard Hughes Medical Institute, Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, Connecticut 06510, USA [2] Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510, USA [3]
| | - Francesca Giordano
- 1] Howard Hughes Medical Institute, Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, Connecticut 06510, USA [2] Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510, USA [3]
| | - Yumei Wu
- 1] Howard Hughes Medical Institute, Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, Connecticut 06510, USA [2] Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Jason Chan
- 1] Zilkha Neurogenetic Institute, Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA [2]
| | - Chen Zhu
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Ira Milosevic
- 1] Howard Hughes Medical Institute, Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, Connecticut 06510, USA [2] Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Xudong Wu
- Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Kai Yao
- Department of Ophthalmology and Visual Science, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Bo Chen
- Department of Ophthalmology and Visual Science, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Tobias Baumgart
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Derek Sieburth
- Zilkha Neurogenetic Institute, Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA
| | - Pietro De Camilli
- 1] Howard Hughes Medical Institute, Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, Connecticut 06510, USA [2] Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
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45
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Scott SA, Mathews TP, Ivanova PT, Lindsley CW, Brown HA. Chemical modulation of glycerolipid signaling and metabolic pathways. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1841:1060-84. [PMID: 24440821 DOI: 10.1016/j.bbalip.2014.01.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/06/2014] [Accepted: 01/07/2014] [Indexed: 01/04/2023]
Abstract
Thirty years ago, glycerolipids captured the attention of biochemical researchers as novel cellular signaling entities. We now recognize that these biomolecules occupy signaling nodes critical to a number of physiological and pathological processes. Thus, glycerolipid-metabolizing enzymes present attractive targets for new therapies. A number of fields-ranging from neuroscience and cancer to diabetes and obesity-have elucidated the signaling properties of glycerolipids. The biochemical literature teems with newly emerging small molecule inhibitors capable of manipulating glycerolipid metabolism and signaling. This ever-expanding pool of chemical modulators appears daunting to those interested in exploiting glycerolipid-signaling pathways in their model system of choice. This review distills the current body of literature surrounding glycerolipid metabolism into a more approachable format, facilitating the application of small molecule inhibitors to novel systems. This article is part of a Special Issue entitled Tools to study lipid functions.
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Affiliation(s)
- Sarah A Scott
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Thomas P Mathews
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Pavlina T Ivanova
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Craig W Lindsley
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA; Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235, USA
| | - H Alex Brown
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235, USA.
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46
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Sankella S, Garg A, Horton JD, Agarwal AK. Hepatic gluconeogenesis is enhanced by phosphatidic acid which remains uninhibited by insulin in lipodystrophic Agpat2-/- mice. J Biol Chem 2014; 289:4762-77. [PMID: 24425876 DOI: 10.1074/jbc.m113.530998] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In this study we examined the role of phosphatidic acid (PA) in hepatic glucose production (HGP) and development of hepatic insulin resistance in mice that lack 1-acylglycerol-3-phosphate O-acyltransferase 2 (AGPAT2). Liver lysophosphatidic acid and PA levels were increased ∼2- and ∼5-fold, respectively, in male Agpat2(-/-) mice compared with wild type mice. In the absence of AGPAT2, the liver can synthesize PAs by activating diacylglycerol kinase or phospholipase D, both of which were elevated in the livers of Agpat2(-/-) mice. We found that PAs C16:0/18:1 and C18:1/20:4 enhanced HGP in primary WT hepatocytes, an effect that was further enhanced in primary hepatocytes from Agpat2(-/-) mice. Lysophosphatidic acids C16:0 and C18:1 failed to increase HGP in primary hepatocytes. The activation of HGP was accompanied by an up-regulation of the key gluconeogenic enzymes glucose-6-phosphatase and phosphoenolpyruvate carboxykinase. This activation was suppressed by insulin in the WT primary hepatocytes but not in the Agpat2(-/-) primary hepatocytes. Thus, the lack of normal insulin signaling in Agpat2(-/-) livers allows unrestricted PA-induced gluconeogenesis significantly contributing to the development of hyperglycemia in these mice.
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Affiliation(s)
- Shireesha Sankella
- From the Division of Nutrition and Metabolic Diseases, Department of Internal Medicine and Center for Human Nutrition
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47
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Wang X, Su Y, Liu Y, Kim SC, Fanella B. Phosphatidic Acid as Lipid Messenger and Growth Regulators in Plants. SIGNALING AND COMMUNICATION IN PLANTS 2014. [DOI: 10.1007/978-3-642-42011-5_4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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48
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Truman JP, García-Barros M, Obeid LM, Hannun YA. Evolving concepts in cancer therapy through targeting sphingolipid metabolism. Biochim Biophys Acta Mol Cell Biol Lipids 2013; 1841:1174-88. [PMID: 24384461 DOI: 10.1016/j.bbalip.2013.12.013] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 12/18/2013] [Accepted: 12/21/2013] [Indexed: 12/29/2022]
Abstract
Traditional methods of cancer treatment are limited in their efficacy due to both inherent and acquired factors. Many different studies have shown that the generation of ceramide in response to cytotoxic therapy is generally an important step leading to cell death. Cancer cells employ different methods to both limit ceramide generation and to remove ceramide in order to become resistant to treatment. Furthermore, sphingosine kinase activity, which phosphorylates sphingosine the product of ceramide hydrolysis, has been linked to multidrug resistance, and can act as a strong survival factor. This review will examine several of the most frequently used cancer therapies and their effect on both ceramide generation and the mechanisms employed to remove it. The development and use of inhibitors of sphingosine kinase will be focused upon as an example of how targeting sphingolipid metabolism may provide an effective means to improve treatment response rates and reduce associated treatment toxicity. This article is part of a Special Issue entitled Tools to study lipid functions.
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Affiliation(s)
- Jean-Philip Truman
- Health Science Center, Stony Brook University, 100 Nicolls Road, T15, 023, 11794 Stony Brook, NY, USA.
| | - Mónica García-Barros
- Health Science Center, Stony Brook University, 100 Nicolls Road, T15, 023, 11794 Stony Brook, NY, USA.
| | - Lina M Obeid
- Northport Veterans Affairs Medical Center, Northport, NY 11768, USA; Health Science Center, Stony Brook University, 100 Nicolls Road, L4, 178, 11794 Stony Brook, NY, USA.
| | - Yusuf A Hannun
- Department of Medicine and the Stony Brook Cancer Center, Health Science Center, Stony Brook University, 100 Nicolls Road, L4, 178, 11794 Stony Brook, NY, USA.
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49
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Abstract
Phosphatidic acid (PA) is recognized as an important class of lipid messengers. The cellular PA levels are dynamic; PA is produced and metabolized by several enzymatic reactions, including different phospholipases, lipid kinases, and phosphatases. PA interacts with various proteins and the interactions may modulate enzyme catalytic activities and/or tether proteins to membranes. The PA-protein interactions are impacted by changes in cellular pH and other effectors, such as cations. PA is involved in a wide range of cellular processes, including vesicular trafficking, cytoskeletal organization, secretion, cell proliferation, and survival. Manipulations of different PA production reactions alter cellular and organismal response to a wide range of abiotic and biotic stresses. Further investigations of PA's function and mechanisms of action will advance not only the understanding of cell signaling networks but also may lead to biotechnological and pharmacological applications.
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50
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Diacylglycerol kinase θ couples farnesoid X receptor-dependent bile acid signalling to Akt activation and glucose homoeostasis in hepatocytes. Biochem J 2013; 454:267-74. [PMID: 23767959 DOI: 10.1042/bj20130609] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
DGKs (diacylglycerol kinases) catalyse the conversion of diacylglycerol into PA (phosphatidic acid), a positive modulator of mTOR (mammalian target of rapamycin). We have found that chenodeoxycholic acid and the synthetic FXR (farnesoid X receptor) ligand GW4064 induce the mRNA and protein expression of DGKθ in the HepG2 cell line and in primary human hepatocytes. Reporter gene studies using 1.5 kB of the DGKθ promoter fused to the luciferase gene revealed that bile acids increase DGKθ transcriptional activity. Mutation of putative FXR-binding sites attenuated the ability of GW4046 to increase DGKθ luciferase activity. Consistent with this finding, ChIP (chromatin immunoprecipitation) assays demonstrated that bile acid signalling increased the recruitment of FXR to the DGKθ promoter. Furthermore, GW4064 evoked a time-dependent increase in the cellular concentration of PA. We also found that GW4064 and PA promote the phosphorylation of mTOR, Akt and FoxO1 (forkhead box O1), and that silencing DGKθ expression significantly abrogated the ability of GW4046 to promote the phosphorylation of these PA-regulated targets. DGKθ was also required for bile-acid-dependent decreased glucose production. Taken together, our results establish DGKθ as a key mediator of bile-acid-stimulated modulation of mTORC2 (mTOR complex 2), the Akt pathway and glucose homoeostasis.
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