1
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Rolver MG, Severin M, Pedersen SF. Regulation of cancer cell lipid metabolism and oxidative phosphorylation by microenvironmental acidosis. Am J Physiol Cell Physiol 2024; 327:C869-C883. [PMID: 39099426 DOI: 10.1152/ajpcell.00429.2024] [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: 06/26/2024] [Revised: 07/30/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
The expansion of cancer cell mass in solid tumors generates a harsh environment characterized by dynamically varying levels of acidosis, hypoxia, and nutrient deprivation. Because acidosis inhibits glycolytic metabolism and hypoxia inhibits oxidative phosphorylation, cancer cells that survive and grow in these environments must rewire their metabolism and develop a high degree of metabolic plasticity to meet their energetic and biosynthetic demands. Cancer cells frequently upregulate pathways enabling the uptake and utilization of lipids and other nutrients derived from dead or recruited stromal cells, and in particular lipid uptake is strongly enhanced in acidic microenvironments. The resulting lipid accumulation and increased reliance on β-oxidation and mitochondrial metabolism increase susceptibility to oxidative stress, lipotoxicity, and ferroptosis, in turn driving changes that may mitigate such risks. The spatially and temporally heterogeneous tumor microenvironment thus selects for invasive, metabolically flexible, and resilient cancer cells capable of exploiting their local conditions and of seeking out more favorable surroundings. This phenotype relies on the interplay between metabolism, acidosis, and oncogenic mutations, driving metabolic signaling pathways such as peroxisome proliferator-activated receptors (PPARs). Understanding the particular vulnerabilities of such cells may uncover novel therapeutic liabilities of the most aggressive cancer cells.
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Affiliation(s)
- Michala G Rolver
- Section for Computational and RNA Biology, Department of Biology, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
- Section for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Marc Severin
- Section for Computational and RNA Biology, Department of Biology, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
- Section for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Stine F Pedersen
- Section for Computational and RNA Biology, Department of Biology, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
- Section for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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2
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Sebinelli HG, Syska C, Čopič A, Lenoir G. Established and emerging players in phospholipid scrambling: a structural perspective. Biochimie 2024:S0300-9084(24)00218-9. [PMID: 39304020 DOI: 10.1016/j.biochi.2024.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 09/16/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
The maintenance of a diverse and non-homogeneous lipid composition in cell membranes is crucial for a multitude of cellular processes. One important example is transbilayer lipid asymmetry, which refers to a difference in lipid composition between the two leaflets of a cellular membrane. Transbilayer asymmetry is especially pronounced at the plasma membrane, where at resting state, negatively-charged phospholipids such as phosphatidylserine (PS) are almost exclusively restricted to the cytosolic leaflet, whereas sphingolipids are mostly found in the exoplasmic leaflet. Transbilayer movement of lipids is inherently slow, and for a fast cellular response, for example during apoptosis, transmembrane proteins termed scramblases facilitate the movement of polar/charged lipid headgroups through the membrane interior. In recent years, an expanding number of proteins from diverse families have been suggested to possess a lipid scramblase activity. Members of TMEM16 and XKR proteins have been implicated in blood clotting and apoptosis, whereas the scrambling activity of ATG9 and TMEM41B/VMP1 proteins contributes to the synthesis of autophagosomal membrane during autophagy. Structural studies, in vitro reconstitution of lipid scrambling, and molecular dynamics simulations have significantly advanced our understanding of the molecular mechanisms of lipid scrambling and helped delineate potential lipid transport pathways through the membrane. A number of examples also suggest that lipid scrambling activity can be combined with another activity, as is the case for TMEM16 proteins, which also function as ion channels, rhodopsin in the photoreceptor membrane, and possibly other G-protein coupled receptors.
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Affiliation(s)
- Heitor Gobbi Sebinelli
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell, Gif-sur-Yvette, France
| | - Camille Syska
- Centre de Recherche en Biologie Cellulaire de Montpellier (CRBM), Université de Montpellier, CNRS, 34293, Montpellier Cedex 05, France
| | - Alenka Čopič
- Centre de Recherche en Biologie Cellulaire de Montpellier (CRBM), Université de Montpellier, CNRS, 34293, Montpellier Cedex 05, France
| | - Guillaume Lenoir
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell, Gif-sur-Yvette, France.
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3
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Glatz JFC, Heather LC, Luiken JJFP. CD36 as a gatekeeper of myocardial lipid metabolism and therapeutic target for metabolic disease. Physiol Rev 2024; 104:727-764. [PMID: 37882731 DOI: 10.1152/physrev.00011.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 10/02/2023] [Accepted: 10/22/2023] [Indexed: 10/27/2023] Open
Abstract
The multifunctional membrane glycoprotein CD36 is expressed in different types of cells and plays a key regulatory role in cellular lipid metabolism, especially in cardiac muscle. CD36 facilitates the cellular uptake of long-chain fatty acids, mediates lipid signaling, and regulates storage and oxidation of lipids in various tissues with active lipid metabolism. CD36 deficiency leads to marked impairments in peripheral lipid metabolism, which consequently impact on the cellular utilization of multiple different fuels because of the integrated nature of metabolism. The functional presence of CD36 at the plasma membrane is regulated by its reversible subcellular recycling from and to endosomes and is under the control of mechanical, hormonal, and nutritional factors. Aberrations in this dynamic role of CD36 are causally associated with various metabolic diseases, in particular insulin resistance, diabetic cardiomyopathy, and cardiac hypertrophy. Recent research in cardiac muscle has disclosed the endosomal proton pump vacuolar-type H+-ATPase (v-ATPase) as a key enzyme regulating subcellular CD36 recycling and being the site of interaction between various substrates to determine cellular substrate preference. In addition, evidence is accumulating that interventions targeting CD36 directly or modulating its subcellular recycling are effective for the treatment of metabolic diseases. In conclusion, subcellular CD36 localization is the major adaptive regulator of cellular uptake and metabolism of long-chain fatty acids and appears a suitable target for metabolic modulation therapy to mend failing hearts.
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Affiliation(s)
- Jan F C Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Lisa C Heather
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, United Kingdom
| | - Joost J F P Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
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4
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Clavelo‐Farrow C, Thomas P. The role of candidate transport proteins in β-cell long-chain fatty acid uptake: Where are we now? Diabet Med 2023; 40:e15198. [PMID: 37577762 PMCID: PMC10947460 DOI: 10.1111/dme.15198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/04/2023] [Accepted: 08/11/2023] [Indexed: 08/15/2023]
Abstract
Type 2 diabetes (T2D) in humans is typically preceded by elevated levels of circulatory long-chain free fatty acids (LC-FFA). These excess LC-FFA are widely thought to be taken up by pancreatic β-cells, contributing to their dysfunction and death during the development of T2D; a process that has been termed lipotoxicity. Depending on their degree of saturation and carbon chain length, LC-FFA can exert different effects on pancreatic β-cells viability and function in vitro. Long-chain saturated fatty acids (LC-SFA) are thought to be toxic, whereas monounsaturated fatty acids are not and may even offer protection against the toxic effects of LC-SFAs. However, the mechanism of LC-FFA uptake into pancreatic β-cells is poorly understood, partly because it has been an understudied area of research. Determining how LC-FFA are taken up into β-cells is crucial for later formulation of therapies to prevent potential cellular overload of LC-FFA, thereby slowing the onset of T2D. In this work, we detail more than 40 years of literature investigating the role of membrane-associated transport proteins in LC-FFA uptake. By focussing on what is known in other cell types, we highlight where we can extrapolate our current understanding of protein-mediated transport to β-cells and uncover where further understanding is required.
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Affiliation(s)
| | - Patricia Thomas
- Institute of Metabolism and Systems Research, University of BirminghamBirminghamUK
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5
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Sanford JD, Franklin D, Grois GA, Jin A, Zhang Y. Carnitine o-octanoyltransferase is a p53 target that promotes oxidative metabolism and cell survival following nutrient starvation. J Biol Chem 2023; 299:104908. [PMID: 37307919 PMCID: PMC10339192 DOI: 10.1016/j.jbc.2023.104908] [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: 11/23/2022] [Revised: 05/11/2023] [Accepted: 06/01/2023] [Indexed: 06/14/2023] Open
Abstract
Whereas it is known that p53 broadly regulates cell metabolism, the specific activities that mediate this regulation remain partially understood. Here, we identified carnitine o-octanoyltransferase (CROT) as a p53 transactivation target that is upregulated by cellular stresses in a p53-dependent manner. CROT is a peroxisomal enzyme catalyzing very long-chain fatty acids conversion to medium chain fatty acids that can be absorbed by mitochondria during β-oxidation. p53 induces CROT transcription through binding to consensus response elements in the 5'-UTR of CROT mRNA. Overexpression of WT but not enzymatically inactive mutant CROT promotes mitochondrial oxidative respiration, while downregulation of CROT inhibits mitochondrial oxidative respiration. Nutrient depletion induces p53-dependent CROT expression that facilitates cell growth and survival; in contrast, cells deficient in CROT have blunted cell growth and reduced survival during nutrient depletion. Together, these data are consistent with a model where p53-regulated CROT expression allows cells to be more efficiently utilizing stored very long-chain fatty acids to survive nutrient depletion stresses.
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Affiliation(s)
- Jack D Sanford
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Curriculum in Genetics and Molecular Biology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Derek Franklin
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Gabriella A Grois
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Aiwen Jin
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yanping Zhang
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Curriculum in Genetics and Molecular Biology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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6
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Morris I, Croes CA, Boes M, Kalkhoven E. Advanced omics techniques shed light on CD1d-mediated lipid antigen presentation to iNKT cells. Biochim Biophys Acta Mol Cell Biol Lipids 2023; 1868:159292. [PMID: 36773690 DOI: 10.1016/j.bbalip.2023.159292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/26/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
Invariant natural killer T cells (iNKT cells) can be activated through binding antigenic lipid/CD1d complexes to their TCR. Antigenic lipids are processed, loaded, and displayed in complex with CD1d by lipid antigen presenting cells (LAPCs). The mechanism of lipid antigen presentation via CD1d is highly conserved with recent work showing adipocytes are LAPCs that, besides having a role in lipid storage, can activate iNKT cells and play an important role in systemic metabolic disease. Recent studies shed light on parameters potentially dictating cytokine output and how obesity-associated metabolic disease may affect such parameters. By following a lipid antigen's journey, we identify five key areas which may dictate cytokine skew: co-stimulation, structural properties of the lipid antigen, stability of lipid antigen/CD1d complexes, intracellular and extracellular pH, and intracellular and extracellular lipid environment. Recent publications indicate that the combination of advanced omics-type approaches and machine learning may be a fruitful way to interconnect these 5 areas, with the ultimate goal to provide new insights for therapeutic exploration.
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Affiliation(s)
- Imogen Morris
- Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, Universiteitsweg 100, 3584, CG, Utrecht, the Netherlands
| | - Cresci-Anne Croes
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, 6708WE Wageningen, the Netherlands
| | - Marianne Boes
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht University, Lundlaan 6, 3584, EA, Utrecht, the Netherlands; Department of Paediatric Immunology, University Medical Center Utrecht, Utrecht University, Lundlaan 6, 3584, EA, Utrecht, the Netherlands
| | - Eric Kalkhoven
- Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, Universiteitsweg 100, 3584, CG, Utrecht, the Netherlands.
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7
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Bielawiec P, Dziemitko S, Konstantynowicz-Nowicka K, Chabowski A, Dzięcioł J, Harasim-Symbor E. Cannabidiol improves muscular lipid profile by affecting the expression of fatty acid transporters and inhibiting de novo lipogenesis. Sci Rep 2023; 13:3694. [PMID: 36879113 PMCID: PMC9988888 DOI: 10.1038/s41598-023-30872-w] [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: 12/09/2022] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Obesity is one of the principal public health concerns leading to disturbances in glucose and lipid metabolism, which is a risk factor for several chronic diseases, including insulin resistance, type 2 diabetes mellitus, and cardiovascular diseases. In recent years, it turned out that cannabidiol (CBD) is a potential therapeutic agent in the treatment of obesity and its complications. Therefore, in the present study, we used CBD therapy (intraperitoneal injections in a dose of 10 mg/kg of body mass for 14 days) in a rat model of obesity induced by a high-fat diet (HFD). Gas-liquid chromatography and Western blotting were applied in order to determine the intramuscular lipid content and total expression of selected proteins in the white and red gastrocnemius muscle, respectively. Based on fatty acid composition, we calculated de novo lipogenesis ratio (16:0/18:2n-6), desaturation ratio (18:1n-9/18:0), and elongation ratios (18:0/16:0, 20:0/18:0, 22:0/20:0 and 24:0/22:0), in the selected lipid fractions. Two-week CBD administration significantly reduced the intramuscular fatty acids (FAs) accumulation and inhibited de novo lipogenesis in different lipid pools (in the free fatty acid, diacylglycerol, and triacylglycerol fractions) in both muscle types, which coincided with a decrease in the expression of membrane fatty acid transporters (fatty acid translocase, membrane-associated fatty acid binding protein, and fatty acid transport proteins 1 and 4). Moreover, CBD application profoundly improved the elongation and desaturation ratios, which was in line with downregulated expression of enzymes from the family of elongases and desaturases regardless of the metabolism presented by the muscle type. To our knowledge, this study is the first that outlines the novel effects of CBD action on skeletal muscle with different types of metabolism (oxidative vs. glycolytic).
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Affiliation(s)
- Patrycja Bielawiec
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
| | - Sylwia Dziemitko
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland
| | | | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland
| | - Janusz Dzięcioł
- Department of Human Anatomy, Medical University of Bialystok, Bialystok, Poland
| | - Ewa Harasim-Symbor
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland
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8
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Tau S, Miller TW. The role of cancer cell bioenergetics in dormancy and drug resistance. Cancer Metastasis Rev 2023; 42:87-98. [PMID: 36696004 PMCID: PMC10233409 DOI: 10.1007/s10555-023-10081-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/11/2023] [Indexed: 01/26/2023]
Abstract
While anti-cancer drug treatments are often effective for the clinical management of cancer, these treatments frequently leave behind drug-tolerant persister cancer cells that can ultimately give rise to recurrent disease. Such persistent cancer cells can lie dormant for extended periods of time, going undetected by conventional clinical means. Understanding the mechanisms that such dormant cancer cells use to survive, and the mechanisms that drive emergence from dormancy, is critical to the development of improved therapeutic strategies to prevent and manage disease recurrence. Cancer cells often exhibit metabolic alterations compared to their non-transformed counterparts. An emerging body of evidence supports the notion that dormant cancer cells also have unique metabolic adaptations that may offer therapeutically targetable vulnerabilities. Herein, we review mechanisms through which cancer cells metabolically adapt to persist during drug treatments and develop drug resistance. We also highlight emerging therapeutic strategies to target dormant cancer cells via their metabolic features.
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Affiliation(s)
- Steven Tau
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Dartmouth Cancer Center, Lebanon, NH, USA
| | - Todd W Miller
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Dartmouth Cancer Center, Lebanon, NH, USA.
- Dartmouth-Hitchcock Medical Center, One Medical Center Drive, HB-7936, Lebanon, NH 03756, USA.
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9
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Samovski D, Jacome-Sosa M, Abumrad NA. Fatty Acid Transport and Signaling: Mechanisms and Physiological Implications. Annu Rev Physiol 2023; 85:317-337. [PMID: 36347219 DOI: 10.1146/annurev-physiol-032122-030352] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Long-chain fatty acids (FAs) are components of plasma membranes and an efficient fuel source and also serve as metabolic regulators through FA signaling mediated by membrane FA receptors. Impaired tissue FA uptake has been linked to major complications of obesity, including insulin resistance, cardiovascular disease, and type 2 diabetes. Fatty acid interactions with a membrane receptor and the initiation of signaling can modify pathways related to nutrient uptake and processing, cell proliferation or differentiation, and secretion of bioactive factors. Here, we review the major membrane receptors involved in FA uptake and FA signaling. We focus on two types of membrane receptors for long-chain FAs: CD36 and the G protein-coupled FA receptors FFAR1 and FFAR4. We describe key signaling pathways and metabolic outcomes for CD36, FFAR1, and FFAR4 and highlight the parallels that provide insight into FA regulation of cell function.
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Affiliation(s)
- Dmitri Samovski
- Center for Human Nutrition, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA;
| | - Miriam Jacome-Sosa
- Center for Human Nutrition, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA;
| | - Nada A Abumrad
- Center for Human Nutrition, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA; .,Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri, USA
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10
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Jia Y, Zhu Y, Wang R, Ye Q, Xu D, Zhang W, Zhang Y, Shan G, Zhu L. Novel insights into the mediating roles of cluster of differentiation 36 in transmembrane transport and tissue partition of per- and polyfluoroalkyl substances in mice. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130129. [PMID: 36303356 DOI: 10.1016/j.jhazmat.2022.130129] [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: 07/10/2022] [Revised: 09/26/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Transmembrane transport is important for bioaccumulation of per- and polyfluoroalkyl substances (PFASs) in organisms, but has not yet been well understood. Here, the roles of cluster of differentiation 36 (CD36) in accumulation of PFASs were investigated. CD36 was overexpressed in Escherichia coli to get CD36-BL21 strain, and the binding affinities of 20 PFASs with CD36 were determined by microscale thermophoresis, which grew up to 17.5 μM with increasing carbon chain length. Consequently, the accumulation of most PFASs was remarkably promoted in CD36-BL21 in comparison to the wild strain, and the enhancement was proportional to their binding affinities with CD36 (r = -0.96). However, this effect was depressed greatly as CD36 was inhibited by sulfo-N-succinimidyl oleate (SSO). Additionally, as the mice received SSO pretreatment before they were exposed to perfluorododecanoic acid, its accumulation in the tissues rich in CD36, such as liver, was suppressed, but increased by 1.1 times in the serum. These indicated that CD36 played critical roles in the transmembrane transport and tissue partition of PFASs in organisms. The developed relationship between liver-blood partition of PFASs and their binding affinities with intracellular proteins was distinctly improved by incorporating that with CD36 (r = -0.97).
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Affiliation(s)
- Yibo Jia
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Yumin Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Rouyi Wang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Qingqing Ye
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Dashan Xu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Wei Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Yanfeng Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Guoqiang Shan
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Lingyan Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin 300350, PR China; Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Tianjin 300350, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China.
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11
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Fan FS. Small-interfering RNA targeting proprotein convertase subtilisin/kexin type 9 might promote fatty liver disease and hepatocellular carcinoma through upregulation of CD36. Tumour Biol 2023; 45:73-80. [PMID: 37694331 DOI: 10.3233/tub-230007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
Proprotein convertase subtilisin/kexin type 9 (PCSK9) binds to low-density lipoprotein (LDL) receptor and fatty acid translocase CD36, inducing lysosomal degradation of these two receptors in the liver cells. Both monoclonal antibody (mAb) and small-interfering RNA (siRNA) targeting PCSK9 have been designed for treatment of familial hypercholesterolemia recently, with elevating LDL receptors on the liver cell surface and increasing LDL uptake as the main beneficial mechanism. However, given that the binding domains of PCSK9 for LDL receptor and CD36 are different, and PCSK9 mAb only attacks the domain for LDL receptor, CD36 expression remains partially controlled under PCSK9 mAb treatment. In contrast, PCSK9 siRNA brings on complete loss of PCSK9, resulting in overexpression of CD36. Based on the fact that CD36 is a key factor in the pathogenesis of non-alcoholic fatty liver disease (NAFLD) and subsequent hepatocellular carcinoma (HCC), the risk of developing NAFLD and HCC on long-term use of PCSK9 siRNA is thus raised as a hypothesis. Additionally, because CD36 is also involved in the promotion of malignant diseases other than HCC, such as acute myeloid leukemia, gastric cancer, breast cancer, and colorectal cancer, the speculative danger of flourishing these malignancies by PCSK9 siRNA is discussed as well.
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Affiliation(s)
- Frank S Fan
- Division of Hematology and Oncology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung City, Taiwan
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12
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Guerrero-Rodríguez SL, Mata-Cruz C, Pérez-Tapia SM, Velasco-Velázquez MA. Role of CD36 in cancer progression, stemness, and targeting. Front Cell Dev Biol 2022; 10:1079076. [PMID: 36568966 PMCID: PMC9772993 DOI: 10.3389/fcell.2022.1079076] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/24/2022] [Indexed: 12/14/2022] Open
Abstract
CD36 is highly expressed in diverse tumor types and its expression correlates with advanced stages, poor prognosis, and reduced survival. In cancer cells, CD36: 1) increases fatty acid uptake, reprogramming lipid metabolism; 2) favors cancer cell proliferation, and 3) promotes epithelial-mesenchymal transition. Furthermore, CD36 expression correlates with the expression of cancer stem cell markers and CD36+ cancer cells display increased stemness functional properties, including clonogenicity, chemo- and radioresistance, and metastasis-initiating capability, suggesting CD36 is a marker of the cancer stem cell population. Thus, CD36 has been pointed as a potential therapeutic target in cancer. At present, at least three different types of molecules have been developed for reducing CD36-mediated functions: blocking monoclonal antibodies, small-molecule inhibitors, and compounds that knock-down CD36 expression. Herein, we review the role of CD36 in cancer progression, its participation in stemness control, as well as the efficacy of reported CD36 inhibitors in cancer cell cultures and animal models. Overall, the evidence compiled points that CD36 is a valid target for the development of new anti-cancer therapies.
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Affiliation(s)
| | - Cecilia Mata-Cruz
- Pharmacology Department, School of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Graduate Program in Biochemical Sciences, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Sonia M. Pérez-Tapia
- Research and Development in Biotherapeutics Unit, National School of Biological Sciences, National Polytechnic Institute, Mexico City, Mexico
- National Laboratory for Specialized Services of Investigation Development and Innovation (I+D+i) for Pharma Chemicals and Biotechnological products LANSEIDI-FarBiotec-CONACyT, Mexico City, Mexico
- Immunology Department, National School of Biological Sciences, National Polytechnic Institute, Mexico City, Mexico
| | - Marco A. Velasco-Velázquez
- Pharmacology Department, School of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
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Brands M, Dörmann P. Two AMP-Binding Domain Proteins from Rhizophagus irregularis Involved in Import of Exogenous Fatty Acids. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2022; 35:464-476. [PMID: 35285673 DOI: 10.1094/mpmi-01-22-0026-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) colonize roots, where they provide nutrients in exchange for sugars and lipids. Because AMF lack genes for cytosolic fatty acid de novo synthase (FAS), they depend on host-derived fatty acids. AMF colonization is accompanied by expression of specific lipid genes and synthesis of sn-2 monoacylglycerols (MAGs). It is unknown how host-derived fatty acids are taken up by AMF. We describe the characterization of two AMP-binding domain protein genes from Rhizophagus irregularis, RiFAT1 and RiFAT2, with sequence similarity to Saccharomyces cerevisiae fatty acid transporter 1 (FAT1). Uptake of 13C-myristic acid (14:0) and, to a lesser extent, 13C-palmitic acid (16:0) was enhanced after expression of RiFAT1 or RiFAT2 in S. cerevisiae Δfat1 cells. The uptake of 2H-labeled fatty acids from 2H-myristoylglycerol or 2H-palmitoylglycerol was also increased after RiFAT1 and RiFAT2 expression in Δfat, but intact 2H-MAGs were not detected. RiFAT1 and RiFAT2 expression was induced in colonized roots compared with extraradical mycelium. 13C-label in the AMF-specific palmitvaccenic acid (16:1Δ11) and eicosatrienoic acid (20:3) were detected in colonized roots only when 13C2-acetate was supplemented but not 13C-fatty acids, demonstrating that de novo synthesized, host-derived fatty acids are rapidly taken up by R. irregularis from the roots. The results show that RiFAT1 and RiFAT2 are involved in the uptake of myristic acid (14:0) and palmitic acid (16:0), while fatty acids from MAGs are only taken up after hydrolysis. Therefore, the two proteins might be involved in fatty acid import into the fungal arbuscules in colonized roots.[Formula: see text] Copyright © 2022 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Mathias Brands
- University of Bonn, Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), Karlrobert-Kreiten-Straße 13, 53115 Bonn, Germany
- University of Cologne, Botanical Institute, Cologne Biocenter, Zülpicher Straße 47b, 50674 Cologne, Germany
| | - Peter Dörmann
- University of Bonn, Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), Karlrobert-Kreiten-Straße 13, 53115 Bonn, Germany
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Rogal J, Roosz J, Teufel C, Cipriano M, Xu R, Eisler W, Weiss M, Schenke‐Layland K, Loskill P. Autologous Human Immunocompetent White Adipose Tissue-on-Chip. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104451. [PMID: 35466539 PMCID: PMC9218765 DOI: 10.1002/advs.202104451] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 03/03/2022] [Indexed: 05/07/2023]
Abstract
Obesity and associated diseases, such as diabetes, have reached epidemic proportions globally. In this era of "diabesity", white adipose tissue (WAT) has become a target of high interest for therapeutic strategies. To gain insights into mechanisms of adipose (patho-)physiology, researchers traditionally relied on animal models. Leveraging Organ-on-Chip technology, a microphysiological in vitro model of human WAT is introduced: a tailored microfluidic platform featuring vasculature-like perfusion that integrates 3D tissues comprising all major WAT-associated cellular components (mature adipocytes, organotypic endothelial barriers, stromovascular cells including adipose tissue macrophages) in an autologous manner and recapitulates pivotal WAT functions, such as energy storage and mobilization as well as endocrine and immunomodulatory activities. A precisely controllable bottom-up approach enables the generation of a multitude of replicates per donor circumventing inter-donor variability issues and paving the way for personalized medicine. Moreover, it allows to adjust the model's degree of complexity via a flexible mix-and-match approach. This WAT-on-Chip system constitutes the first human-based, autologous, and immunocompetent in vitro adipose tissue model that recapitulates almost full tissue heterogeneity and can become a powerful tool for human-relevant research in the field of metabolism and its associated diseases as well as for compound testing and personalized- and precision medicine applications.
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Affiliation(s)
- Julia Rogal
- Department for Microphysiological Systems, Institute of Biomedical EngineeringEberhard Karls University TübingenÖsterbergstr. 3Tübingen72074Germany
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGBNobelstr. 12Stuttgart70569Germany
| | - Julia Roosz
- NMI Natural and Medical Sciences Institute at the University of TübingenMarkwiesenstr. 55Reutlingen72770Germany
| | - Claudia Teufel
- Department for Microphysiological Systems, Institute of Biomedical EngineeringEberhard Karls University TübingenÖsterbergstr. 3Tübingen72074Germany
| | - Madalena Cipriano
- Department for Microphysiological Systems, Institute of Biomedical EngineeringEberhard Karls University TübingenÖsterbergstr. 3Tübingen72074Germany
- 3R‐Center for In vitro Models and Alternatives to Animal TestingEberhard Karls University TübingenÖsterbergstr. 3Tübingen72074Germany
| | - Raylin Xu
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGBNobelstr. 12Stuttgart70569Germany
- Harvard Medical School (HMS)25 Shattuck StBostonMA02115USA
| | - Wiebke Eisler
- Clinic for PlasticReconstructiveHand and Burn SurgeryBG Trauma CenterEberhard Karls University TübingenSchnarrenbergstraße 95Tübingen72076Germany
| | - Martin Weiss
- NMI Natural and Medical Sciences Institute at the University of TübingenMarkwiesenstr. 55Reutlingen72770Germany
- Department of Women's HealthEberhard Karls University TübingenCalwerstrasse 7Tübingen72076Germany
| | - Katja Schenke‐Layland
- NMI Natural and Medical Sciences Institute at the University of TübingenMarkwiesenstr. 55Reutlingen72770Germany
- Department of Medicine/CardiologyCardiovascular Research LaboratoriesDavid Geffen School of Medicine at UCLA675 Charles E. Young Drive South, MRL 3645Los AngelesCA90095USA
- Cluster of Excellence iFIT (EXC2180) “Image‐Guided and Functionally Instructed Tumor Therapies”Eberhard Karls University TuebingenRöntgenweg 11Tuebingen72076Germany
- Department for Medical Technologies and Regenerative MedicineInstitute of Biomedical EngineeringEberhard Karls University TübingenSilcherstr. 7/1Tübingen72076Germany
| | - Peter Loskill
- Department for Microphysiological Systems, Institute of Biomedical EngineeringEberhard Karls University TübingenÖsterbergstr. 3Tübingen72074Germany
- NMI Natural and Medical Sciences Institute at the University of TübingenMarkwiesenstr. 55Reutlingen72770Germany
- 3R‐Center for In vitro Models and Alternatives to Animal TestingEberhard Karls University TübingenÖsterbergstr. 3Tübingen72074Germany
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Abstract
PURPOSE OF REVIEW Transmembrane glycoprotein cluster of differentiation 36 (CD36) is a scavenger receptor class B protein (SR-B2) that serves various functions in lipid metabolism and signaling, in particular facilitating the cellular uptake of long-chain fatty acids. Recent studies have disclosed CD36 to play a prominent regulatory role in cellular fatty acid metabolism in both health and disease. RECENT FINDINGS The rate of cellular fatty acid uptake is short-term (i.e., minutes) regulated by the subcellular recycling of CD36 between endosomes and the plasma membrane. This recycling is governed by the activity of vacuolar-type H+-ATPase (v-ATPase) in the endosomal membrane via assembly and disassembly of two subcomplexes. The latter process is being influenced by metabolic substrates including fatty acids, glucose and specific amino acids, together resulting in a dynamic interplay to modify cellular substrate preference and uptake rates. Moreover, in cases of metabolic disease v-ATPase activity was found to be affected while interventions aimed at normalizing v-ATPase functioning had therapeutic potential. SUMMARY The emerging central role of CD36 in cellular lipid homeostasis and recently obtained molecular insight in the interplay among metabolic substrates indicate the applicability of CD36 as target for metabolic modulation therapy in disease. Experimental studies already have shown the feasibility of this approach.
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Affiliation(s)
- Jan F.C. Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University
- Department of Clinical Genetics, Maastricht University Medical Center+
| | - Miranda Nabben
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University
- Department of Clinical Genetics, Maastricht University Medical Center+
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands
| | - Joost J.F.P. Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University
- Department of Clinical Genetics, Maastricht University Medical Center+
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Lebrun LJ, Moreira S, Tavernier A, Niot I. Postprandial consequences of lipid absorption in the onset of obesity: Role of intestinal CD36. Biochim Biophys Acta Mol Cell Biol Lipids 2022; 1867:159154. [DOI: 10.1016/j.bbalip.2022.159154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 10/18/2022]
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Wade G, McGahee A, Ntambi JM, Simcox J. Lipid Transport in Brown Adipocyte Thermogenesis. Front Physiol 2021; 12:787535. [PMID: 35002769 PMCID: PMC8733649 DOI: 10.3389/fphys.2021.787535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/02/2021] [Indexed: 12/30/2022] Open
Abstract
Non-shivering thermogenesis is an energy demanding process that primarily occurs in brown and beige adipose tissue. Beyond regulating body temperature, these thermogenic adipocytes regulate systemic glucose and lipid homeostasis. Historically, research on thermogenic adipocytes has focused on glycolytic metabolism due to the discovery of active brown adipose tissue in adult humans through glucose uptake imaging. The importance of lipids in non-shivering thermogenesis has more recently been appreciated. Uptake of circulating lipids into thermogenic adipocytes is necessary for body temperature regulation and whole-body lipid homeostasis. A wide array of circulating lipids contribute to thermogenic potential including free fatty acids, triglycerides, and acylcarnitines. This review will summarize the mechanisms and regulation of lipid uptake into brown adipose tissue including protein-mediated uptake, lipoprotein lipase activity, endocytosis, vesicle packaging, and lipid chaperones. We will also address existing gaps in knowledge for cold induced lipid uptake into thermogenic adipose tissue.
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Affiliation(s)
| | | | | | - Judith Simcox
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
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18
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Karunakaran U, Elumalai S, Moon JS, Won KC. CD36 Signal Transduction in Metabolic Diseases: Novel Insights and Therapeutic Targeting. Cells 2021; 10:cells10071833. [PMID: 34360006 PMCID: PMC8305429 DOI: 10.3390/cells10071833] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/14/2021] [Accepted: 07/17/2021] [Indexed: 12/24/2022] Open
Abstract
The cluster of differentiation 36 (CD36) is a scavenger receptor present on various types of cells and has multiple biological functions that may be important in inflammation and in the pathogenesis of metabolic diseases, including diabetes. Here, we consider recent insights into how the CD36 response becomes deregulated under metabolic conditions, as well as the therapeutic benefits of CD36 inhibition, which may provide clues for developing strategies aimed at the treatment or prevention of diabetes associated with metabolic diseases. To facilitate this process further, it is important to pinpoint regulatory mechanisms that are relevant under physiological and pathological conditions. In particular, understanding the mechanisms involved in dictating specific CD36 downstream cellular outcomes will aid in the discovery of potent compounds that target specific CD36 downstream signaling cascades.
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Affiliation(s)
- Udayakumar Karunakaran
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
| | - Suma Elumalai
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
| | - Jun-Sung Moon
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
- Yeungnam University College of Medicine, Daegu 42415, Korea
- Correspondence: (J.-S.M.); (K.-C.W.); Tel.: +82-53-620-3825 (J.-S.M.); +82-53-620-3846 (K.-C.W.)
| | - Kyu-Chang Won
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
- Yeungnam University College of Medicine, Daegu 42415, Korea
- Correspondence: (J.-S.M.); (K.-C.W.); Tel.: +82-53-620-3825 (J.-S.M.); +82-53-620-3846 (K.-C.W.)
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Glatz JFC, Wang F, Nabben M, Luiken JJFP. CD36 as a target for metabolic modulation therapy in cardiac disease. Expert Opin Ther Targets 2021; 25:393-400. [PMID: 34128755 DOI: 10.1080/14728222.2021.1941865] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Introduction: Disturbances in myocardial lipid metabolism are increasingly being recognized as drivers of the development and progression of heart disease. Therefore, there is a need for treatments that can directly target lipid metabolic defects in heart failure. The membrane-associated glycoprotein CD36 plays a pivotal role in governing myocardial lipid metabolism by mediating lipid signaling and facilitating the cellular uptake of long-chain fatty acids. Emerging evidence suggests that CD36 is a prominent target in the treatment of heart failure.Areas covered: This article provides an overview of the key role of CD36 for proper contractile functioning of a healthy heart, its implications in the development of cardiac disease (ischemia/reperfusion, cardiac hypertrophy, and diabetic cardiomyopathy), and its application as a target to normalize cardiac metabolism as part of so-called metabolic modulation therapy.Expert opinion: CD36 appears a promising and effective therapeutic target in the treatment of heart failure. Natural compounds and chemical agents known to alter the amount or subcellular distribution of CD36 or inhibit its functioning, should be evaluated for their potency to correct cardiac metabolism and cure heart disease.
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Affiliation(s)
- Jan F C Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, Maastricht, The Netherlands.,Department of Clinical Genetics, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Fang Wang
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, Maastricht, The Netherlands
| | - Miranda Nabben
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, Maastricht, The Netherlands.,Department of Clinical Genetics, Maastricht University Medical Center+, Maastricht, The Netherlands.,CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - Joost J F P Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences (FHML), Maastricht University, Maastricht, The Netherlands.,Department of Clinical Genetics, Maastricht University Medical Center+, Maastricht, The Netherlands
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20
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Schianchi F, Glatz JFC, Navarro Gascon A, Nabben M, Neumann D, Luiken JJFP. Putative Role of Protein Palmitoylation in Cardiac Lipid-Induced Insulin Resistance. Int J Mol Sci 2020; 21:ijms21249438. [PMID: 33322406 PMCID: PMC7764417 DOI: 10.3390/ijms21249438] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 12/25/2022] Open
Abstract
In the heart, inhibition of the insulin cascade following lipid overload is strongly associated with contractile dysfunction. The translocation of fatty acid transporter CD36 (SR-B2) from intracellular stores to the cell surface is a hallmark event in the lipid-overloaded heart, feeding forward to intracellular lipid accumulation. Yet, the molecular mechanisms by which intracellularly arrived lipids induce insulin resistance is ill-understood. Bioactive lipid metabolites (diacyl-glycerols, ceramides) are contributing factors but fail to correlate with the degree of cardiac insulin resistance in diabetic humans. This leaves room for other lipid-induced mechanisms involved in lipid-induced insulin resistance, including protein palmitoylation. Protein palmitoylation encompasses the reversible covalent attachment of palmitate moieties to cysteine residues and is governed by protein acyl-transferases and thioesterases. The function of palmitoylation is to provide proteins with proper spatiotemporal localization, thereby securing the correct unwinding of signaling pathways. In this review, we provide examples of palmitoylations of individual signaling proteins to discuss the emerging role of protein palmitoylation as a modulator of the insulin signaling cascade. Second, we speculate how protein hyper-palmitoylations (including that of CD36), as they occur during lipid oversupply, may lead to insulin resistance. Finally, we conclude that the protein palmitoylation machinery may offer novel targets to fight lipid-induced cardiomyopathy.
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Affiliation(s)
- Francesco Schianchi
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
| | - Jan F. C. Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
- Department of Clinical Genetics, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands
| | - Artur Navarro Gascon
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
| | - Miranda Nabben
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
- Department of Clinical Genetics, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands
| | - Dietbert Neumann
- Department of Pathology, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands;
| | - Joost J. F. P. Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
- Department of Clinical Genetics, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands
- Correspondence: ; Tel.: +31-43-388-1998
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21
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Biosynthesis of N-Docosahexanoylethanolamine from Unesterified Docosahexaenoic Acid and Docosahexaenoyl-Lysophosphatidylcholine in Neuronal Cells. Int J Mol Sci 2020; 21:ijms21228768. [PMID: 33233525 PMCID: PMC7699583 DOI: 10.3390/ijms21228768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/20/2022] Open
Abstract
We investigated the synthesis of N-docosahexaenoylethanolamine (synaptamide) in neuronal cells from unesterified docosahexaenoic acid (DHA) or DHA-lysophosphatidylcholine (DHA-lysoPC), the two major lipid forms that deliver DHA to the brain, in order to understand the formation of this neurotrophic and neuroprotective metabolite of DHA in the brain. Both substrates were taken up in Neuro2A cells and metabolized to N-docosahexaenoylphosphatidylethanolamine (NDoPE) and synaptamide in a time- and concentration-dependent manner, but unesterified DHA was 1.5 to 2.4 times more effective than DHA-lysoPC at equimolar concentrations. The plasmalogen NDoPE (pNDoPE) amounted more than 80% of NDoPE produced from DHA or DHA-lysoPC, with 16-carbon-pNDoPE being the most abundant species. Inhibition of N-acylphosphatidylethanolamine-phospholipase D (NAPE-PLD) by hexachlorophene or bithionol significantly decreased the synaptamide production, indicating that synaptamide synthesis is mediated at least in part via NDoPE hydrolysis. NDoPE formation occurred much more rapidly than synaptamide production, indicating a precursor–product relationship. Although NDoPE is an intermediate for synaptamide biosynthesis, only about 1% of newly synthesized NDoPE was converted to synaptamide, possibly suggesting additional biological function of NDoPE, particularly for pNDoPE, which is the major form of NDoPE produced.
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