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Acid Sphingomyelinase Inhibitor, Imipramine, Reduces Hippocampal Neuronal Death after Traumatic Brain Injury. Int J Mol Sci 2022; 23:ijms232314749. [PMID: 36499076 PMCID: PMC9740309 DOI: 10.3390/ijms232314749] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Traumatic brain injury (TBI) broadly degrades the normal function of the brain after a bump, blow, or jolt to the head. TBI leads to the aggravation of pre-existing brain dysfunction and promotes neurotoxic cascades that involve processes such as oxidative stress, loss of dendritic arborization, and zinc accumulation. Acid sphingomyelinase (ASMase) is an enzyme that hydrolyzes sphingomyelin to ceramide in cells. Under normal conditions, ceramide plays an important role in various physiological functions, such as differentiation and apoptosis. However, under pathological conditions, excessive ceramide production is toxic and activates the neuronal-death pathway. Therefore, we hypothesized that the inhibition of ASMase activity by imipramine would reduce ceramide formation and thus prevent TBI-induced neuronal death. To test our hypothesis, an ASMase inhibitor, imipramine (10 mg/kg, i.p.), was administrated to rats immediately after TBI. Based on the results of this study, we confirmed that imipramine significantly reduced ceramide formation, dendritic loss, oxidative stress, and neuronal death in the TBI-imipramine group compared with the TBI-vehicle group. Additionally, we validated that imipramine prevented TBI-induced cognitive dysfunction and the modified neurological severity score. Consequently, we suggest that ASMase inhibition may be a promising therapeutic strategy to reduce hippocampal neuronal death after TBI.
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Momchilova A, Nikolaev G, Pankov S, Vassileva E, Krastev N, Robev B, Krastev D, Pinkas A, Pankov R. Effect of Quercetin and Fingolimod, Alone or in Combination, on the Sphingolipid Metabolism in HepG2 Cells. Int J Mol Sci 2022; 23:ijms232213916. [PMID: 36430423 PMCID: PMC9697772 DOI: 10.3390/ijms232213916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Combinations of anti-cancer drugs can overcome resistance to therapy and provide new more effective treatments. In this work we have analyzed the effect of the polyphenol quercetin and the anti-cancer sphingosine analog fingolimod on the sphingolipid metabolism in HepG2 cells, since sphingolipids are recognized as mediators of cell proliferation and apoptosis in cancer cells. Treatment of hepatocellular carcinoma HepG2 cells with quercetin and fingolimod, alone or in combination, induced different degrees of sphingomyelin (SM) reduction and a corresponding activation of neutral sphingomyelinase (nSMase). Western blot analysis showed that only treatments containing quercetin induced up-regulation of nSMase expression. The same treatment caused elevation of ceramide (CER) levels, whereas the observed alterations in sphingosine (SPH) content were not statistically significant. The two tested drugs induced a reduction of the pro-proliferative sphingolipid, sphingosine 1 phosphate (S1P), in the following order: quercetin, fingolimod, quercetin + fingolimod. The activity of the enzyme responsible for CER hydrolysis, alkaline ceramidase (ALCER) was down-regulated only in the incubations involving quercetin and fingolimod did not affect this activity. The enzyme, maintaining the balance between apoptosis and proliferation, sphingosine kinase 1 (SK1), was down-regulated by incubations in the following order: quercetin, fingolimod, quercetin + fingolimod. Western blot analysis showed down-regulation in SK1 expression upon quercetin but not upon fingolimod treatment. Studies on the effect of quercetin and fingolimod on the two proteins associated with apoptotic events, AKT and Bcl-2, showed that only quercetin, alone or in combination, down-regulated the activity of the two proteins. The reported observations provide information which can be useful in the search of novel anti-tumor approaches, aiming at optimization of the therapeutic effect and maximal preservation of healthy tissues.
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Affiliation(s)
- Albena Momchilova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
- Correspondence: ; Tel.: +359-2-9792686 or +359-898-238971
| | - Georgi Nikolaev
- Biological Faculty, Sofia University “St. Kliment Ohridki”, 8 Dragan Tzankov Str., 1164 Sofia, Bulgaria
| | - Stefan Pankov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Evgenia Vassileva
- Clinic of Neurology, Tsaritsa Yoanna University Hospital-ISUL, 1527 Sofia, Bulgaria
| | - Nikolai Krastev
- Department of Anatomy, Histology and Embryology, Medical University-Sofia, Blvd. Sv. Georgi Sofiisky 1, 1431 Sofia, Bulgaria
| | - Bozhil Robev
- Department of Medical Oncology, University Multi-Profile Hospital for Active Treatment (UMHAT) “St. Ivan Rilski”, 1606 Sofia, Bulgaria
| | - Dimo Krastev
- Medical College “Y. Filaretova”, Medical University-Sofia, Yordanka Filaretova Str. 3, 1606 Sofia, Bulgaria
| | - Adriana Pinkas
- CSTEP, Office of Continuing Education, Suffolk County Community College 30 Greene Ave., Sayville, NY 11782, USA
| | - Roumen Pankov
- Biological Faculty, Sofia University “St. Kliment Ohridki”, 8 Dragan Tzankov Str., 1164 Sofia, Bulgaria
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Momchilova A, Pankov R, Staneva G, Pankov S, Krastev P, Vassileva E, Hazarosova R, Krastev N, Robev B, Nikolova B, Pinkas A. Resveratrol Affects Sphingolipid Metabolism in A549 Lung Adenocarcinoma Cells. Int J Mol Sci 2022; 23:ijms231810870. [PMID: 36142801 PMCID: PMC9505893 DOI: 10.3390/ijms231810870] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 12/22/2022] Open
Abstract
Resveratrol is a naturally occurring polyphenol which has various beneficial effects, such as anti-inflammatory, anti-tumor, anti-aging, antioxidant, and neuroprotective effects, among others. The anti-cancer activity of resveratrol has been related to alterations in sphingolipid metabolism. We analyzed the effect of resveratrol on the enzymes responsible for accumulation of the two sphingolipids with highest functional activity—apoptosis promoting ceramide (CER) and proliferation-stimulating sphingosine-1-phosphate (S1P)—in human lung adenocarcinoma A549 cells. Resveratrol treatment induced an increase in CER and sphingosine (SPH) and a decrease in sphingomyelin (SM) and S1P. Our results showed that the most common mode of CER accumulation, through sphingomyelinase-induced hydrolysis of SM, was not responsible for a CER increase despite the reduction in SM in A549 plasma membranes. However, both the activity and the expression of CER synthase 6 were upregulated in resveratrol-treated cells, implying that CER was accumulated as a result of stimulated de novo synthesis. Furthermore, the enzyme responsible for CER hydrolysis, alkaline ceramidase, was not altered, suggesting that it was not related to changes in the CER level. The enzyme maintaining the balance between apoptosis and proliferation, sphingosine kinase 1 (SK1), was downregulated, and its expression was reduced, resulting in a decrease in S1P levels in resveratrol-treated lung adenocarcinoma cells. In addition, incubation of resveratrol-treated A549 cells with the SK1 inhibitors DMS and fingolimod additionally downregulated SK1 without affecting its expression. The present studies provide information concerning the biochemical processes underlying the influence of resveratrol on sphingolipid metabolism in A549 lung cancer cells and reveal possibilities for combined use of polyphenols with specific anti-proliferative agents that could serve as the basis for the development of complex therapeutic strategies.
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Affiliation(s)
- Albena Momchilova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
- Correspondence: ; Tel.:+359-2-9792686 or +359-898-238971
| | - Roumen Pankov
- Biological Faculty, Sofia University “St. Kliment Ohridki”, 8, Dragan Tzankov Str., 1164 Sofia, Bulgaria
| | - Galya Staneva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Stefan Pankov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Plamen Krastev
- Cardiology Clinic, University Hospital “St. Ekaterina”, 1431 Sofia, Bulgaria
| | - Evgenia Vassileva
- Clinic of Neurology, Tsaritsa Yoanna University Hospital-ISUL, 1527 Sofia, Bulgaria
| | - Rusina Hazarosova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Nikolai Krastev
- Department of Anatomy, Histology and Embryology, Medical University—Sofia, Blvd. Sv. Georgi Sofiisky 1, 1431 Sofia, Bulgaria
- Medical Center Relax, 8 Ami Bue Str., 1606 Sofia, Bulgaria
| | - Bozhil Robev
- Department of Medical Oncology, University Multi-Profile Hospital for Active Treatment (UMHAT) “St. Ivan Rilski”, 1606 Sofia, Bulgaria
| | - Biliana Nikolova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Adriana Pinkas
- CSTEP, Office of Continuing Education, Suffolk County Community College 30 Greene Ave., Sayville, NY 11782, USA
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Multifunctional Role of Lipids in Modulating the Tumorigenic Properties of 4T1 Breast Cancer Cells. Int J Mol Sci 2022; 23:ijms23084240. [PMID: 35457057 PMCID: PMC9024985 DOI: 10.3390/ijms23084240] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/04/2022] [Accepted: 04/08/2022] [Indexed: 02/04/2023] Open
Abstract
Tumor growth and progression are linked to an altered lipid metabolism in the tumor microenvironment (TME), including tumor cells and tumor-associated macrophages (TAMs). A growing number of lipid metabolism targeting drugs have shown efficacy in anti-tumor therapy. In addition, exogenously applied lipids and lipid analogues have demonstrated anti-tumor activities in several cancers, including breast cancer. In this study, we investigated the anti-tumor efficacies of the natural lipids palmitic acid (PA), sphingomyelin (SM), ceramide (Cer) and docosahexaenoic acid (DHA) on breast cancer cells. All tested lipids reduced the malignancy of breast cancer cells in vitro by impairing cell proliferation, migration and invasiveness. PA showed superior anti-tumor properties, as it additionally impaired cancer cell viability by inducing apoptosis, without affecting healthy cells. Co-culture experiments further demonstrated that Cer and PA reduced the immunosuppressive phenotype of M2 macrophages and the M2 macrophage-promoted the epithelial–mesenchymal transition (EMT) and migration of breast cancer cells. At the molecular level, this coincided with the up-regulation of E-cadherin. Our results highlight a powerful role for exogenously applied PA and Cer in reducing breast cancer tumorigenicity by simultaneously targeting cancer cells and M2 macrophages. Our findings support the notion that lipids represent alternative biocompatible therapeutic agents for breast cancer.
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Shi Y, Jin Y, Liu F, Jiang J, Cao J, Lu Y, Yang J. Ceramide induces the apoptosis of non‑small cell lung cancer cells through the Txnip/Trx1 complex. Int J Mol Med 2021; 47:85. [PMID: 33760130 PMCID: PMC7992921 DOI: 10.3892/ijmm.2021.4918] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/05/2021] [Indexed: 12/31/2022] Open
Abstract
Ceramide is a biologically active sphingomyelin that inhibits cell growth and proliferation. In previous studies, it was demonstrated that the use of lipopolysaccharides induces acid sphingomyelinases to produce ceramide, promoting lung cancer cell apoptosis; however, the specific mechanisms of this action remain unclear. Thioredoxin‑interacting protein (Txnip) plays an important role in the signal transmission of redox reactions inside and outside the cell. Thus, it was hypothesized that ceramide induces apoptosis in lung adenocarcinoma cells (A549 and PC9) by modulating the Txnip/Trx1 complex. In the present study, the Cell Counting kit‑8 method was used to detect cell activity and the drug concentration. Hoechst 33258 staining and flow cytometry were used to detect cell apoptosis, and the positional association between Txnip and Trx1 upregulated by ceramide was observed by immunofluorescence confocal microscopy. Reverse transcription‑quantitative polymerase chain reaction and western blot analysis were used to detect the changes in related gene, mRNA and protein expression levels. The results revealed that ceramide treatment resulted in the upregulation of Txnip and in the reduction of Trx1 activities. However, the Txnip inhibitor, verapamil, reversed these changes. The analysis of mRNA expression further verified the changes observed in the protein expression of Txnip, Trx1 and apoptosis‑related proteins. On the whole, the present study demonstrates that ceramide induces the apoptosis of lung cancer cells by regulating the Txnip/Trx1 complex.
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Affiliation(s)
- Yining Shi
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Yongmei Jin
- Department of Respiratory Medicine, The Second People's Hospital of Hefei, Hefei, Anhui 230022, P.R. China
| | - Fangfang Liu
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jianjun Jiang
- Department of Respiratory Medicine, The First Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jiyu Cao
- The Teaching Center for Preventive Medicine, School of Public Health, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Youjin Lu
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jin Yang
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
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Lavrynenko O, Titz B, Dijon S, Santos DD, Nury C, Schneider T, Guedj E, Szostak J, Kondylis A, Phillips B, Ekroos K, Martin F, Peitsch MC, Hoeng J, Ivanov NV. Ceramide ratios are affected by cigarette smoke but not heat-not-burn or e-vapor aerosols across four independent mouse studies. Life Sci 2020; 263:118753. [PMID: 33189821 DOI: 10.1016/j.lfs.2020.118753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/03/2020] [Accepted: 11/10/2020] [Indexed: 11/16/2022]
Abstract
AIMS Smoking is an important risk factor for the development of chronic obstructive pulmonary disease and cardiovascular diseases. This study aimed to further elucidate the role of ceramides, as a key lipid class dysregulated in disease states. MAIN METHODS In this article we developed and validated LC-MS/MS method for ceramides (Cer(d18:1/16:0), Cer(d18:1/18:0), Cer(d18:1/24:0) and Cer(d18:1/24:1(15Z)) for the absolute quantification. We deployed it together with proteomics and transcriptomic analysis to assess the effects of cigarette smoke (CS) from the reference cigarette as well as aerosols from heat-not-burn (HnB) tobacco and e-vapor products in apolipoprotein E-deficient (ApoE-/-) mice over several time points. KEY FINDINGS In the lungs, CS exposure substantially elevated the ratios of Cer(d18:1/24:0) and Cer(d18:1/24:1) to Cer(d18:1/18:0) in two independent ApoE-/- mouse inhalation studies. Data from previous studies, in both ApoE-/- and wild-type mice, further confirmed the reproducibility of this finding. Elevation of these ceramide ratios was also observed in plasma/serum, the liver, and-for the Cer(d18:1/24:1(15Z)) to Cer(d18:1/18:0) ratio-the abdominal aorta. Also, the levels of acid ceramidase (Asah1) and glucocerebrosidase (Gba)-lysosomal enzymes involved in the hydrolysis of glucosylceramides-were consistently elevated in the lungs after CS exposure. In contrast, exposure to HnB tobacco product and e-vapor aerosols did not induce significant changes in the ceramide profiles or associated enzymes. SIGNIFICANCE Our work in mice contributes to the accumulating evidence on the importance of ceramide ratios as biologically relevant markers for respiratory disorders, adding to their already demonstrated role in cardiovascular disease risk assessment in humans.
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Affiliation(s)
- Oksana Lavrynenko
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland.
| | - Bjoern Titz
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Sophie Dijon
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Daniel Dos Santos
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Catherine Nury
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Thomas Schneider
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Justyna Szostak
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Athanasios Kondylis
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Blaine Phillips
- Philip Morris International Research Laboratories Pte. Ltd., Science Park II, 117406, Singapore
| | - Kim Ekroos
- Lipidomics Consulting Ltd., Irisviksvägen 31D, 02230 Esbo, Finland
| | - Florian Martin
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
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de Araujo Junior RF, Eich C, Jorquera C, Schomann T, Baldazzi F, Chan AB, Cruz LJ. Ceramide and palmitic acid inhibit macrophage-mediated epithelial-mesenchymal transition in colorectal cancer. Mol Cell Biochem 2020; 468:153-168. [PMID: 32222879 PMCID: PMC7145792 DOI: 10.1007/s11010-020-03719-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 03/13/2020] [Indexed: 02/06/2023]
Abstract
Accumulating evidence indicates that ceramide (Cer) and palmitic acid (PA) possess the ability to modulate switching of macrophage phenotypes and possess anti-tumorigenic effects; however, the underlying molecular mechanisms are largely unknown. The aim of the present study was to investigate whether Cer and PA could induce switching of macrophage polarization from the tumorigenic M2- towards the pro-inflammatory M1-phenotype, and whether this consequently altered the potential of colorectal cancer cells to undergo epithelial–mesenchymal transition (EMT), a hallmark of tumor progression. Our study showed that Cer- and PA-treated macrophages increased expression of the macrophage 1 (M1)-marker CD68 and secretion of IL-12 and attenuated expression of the macrophage 2 (M2)-marker CD163 and IL-10 secretion. Moreover, Cer and PA abolished M2 macrophage-induced EMT and migration of colorectal cancer cells. At the molecular level, this coincided with inhibition of SNAI1 and vimentin expression and upregulation of E-cadherin. Furthermore, Cer and PA attenuated expression levels of IL-10 in colorectal cancer cells co-cultured with M2 macrophages and downregulated STAT3 and NF-κB expression. For the first time, our findings suggest the presence of an IL-10-STAT3-NF-κB signaling axis in colorectal cancer cells co-cultured with M2 macrophages, mimicking the tumor microenvironment. Importantly, PA and Cer were powerful inhibitors of this signaling axis and, consequently, EMT of colorectal cancer cells. These results contribute to our understanding of the immunological mechanisms that underlie the anti-tumorigenic effects of lipids for future combination with drugs in the therapy of colorectal carcinoma.
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Affiliation(s)
- Raimundo Fernandes de Araujo Junior
- Department of Morphology, Federal University of Rio Grande do Norte, Natal, RN, 59072-970, Brazil. .,Post-Graduation Programme in Structural and Functional Biology, Federal University of Rio Grande do Norte, Natal, RN, 59072-970, Brazil. .,Post-Graduation Programme in Health Science, Federal University of Rio Grande do Norte, Natal, RN, 59072-970, Brazil. .,Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands.
| | - Christina Eich
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands
| | - Carla Jorquera
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands
| | - Timo Schomann
- Percuros B.V., 2333 CL, Leiden, The Netherlands.,Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands
| | - Fabio Baldazzi
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands
| | - Alan B Chan
- Percuros B.V., 2333 CL, Leiden, The Netherlands.,Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands
| | - Luis J Cruz
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands
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Zhao H, Liu S, Chen M, Li J, Huang D, Zhu S. Synergistic effects of ascorbic acid and plant-derived ceramide to enhance storability and boost antioxidant systems of postharvest strawberries. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:6562-6571. [PMID: 31321778 DOI: 10.1002/jsfa.9937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/14/2019] [Accepted: 07/15/2019] [Indexed: 05/13/2023]
Abstract
BACKGROUND Excessive reactive oxygen species (ROS) may attack biological macromolecules and induce oxidative stress. The inhibition by ascorbic acid (AsA) on oxidative damage has been reported in fruits, while the barrier effect of ceramide has also been proven. However, there are few reports about the effects of ceramide-AsA interactions to enhance storability and boost antioxidant systems in fruits during storage. This study was conducted to study the synergistic effects of AsA in combination with ceramide on the quality of postharvest strawberry (Fragaria anannasa cv. Tianbao). RESULTS Treatment with 100 mg L-1 AsA plus 1.2 mmol L-1 ceramide significantly delayed the rot of strawberries, reduced the water loss and the contents of ROS, malonaldehyde (MDA), and proline, however, increased the contents of total flavonoids, total phenols, and anthocyanins compared with other treatments. Also, treatment with 100 mg L-1 AsA plus 1.2 mmol L-1 ceramide significantly increased the activities of peroxidase (POD) and superoxide dismutase (SOD) but inhibited the activity of polyphenol oxidase (PPO). CONCLUSION It is suggested that treatment with 100 mg L-1 AsA plus 1.2 mmol L-1 ceramide could significantly reduce the oxidative damage and maintain the storage quality of strawberries during storage by enhancing the antioxidant systems. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Haonuan Zhao
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, China
| | - Shiwen Liu
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, China
| | - Maogang Chen
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, China
| | - Jing Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, China
| | - Dandan Huang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, China
| | - Shuhua Zhu
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, China
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Bagnjuk K, Stöckl JB, Fröhlich T, Arnold GJ, Behr R, Berg U, Berg D, Kunz L, Bishop C, Xu J, Mayerhofer A. Necroptosis in primate luteolysis: a role for ceramide. Cell Death Discov 2019; 5:67. [PMID: 30774995 PMCID: PMC6370808 DOI: 10.1038/s41420-019-0149-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 01/22/2019] [Indexed: 12/25/2022] Open
Abstract
The corpus luteum (CL) is a transient endocrine organ, yet molecular mechanisms resulting in its demise are not well known. The presence of phosphorylated mixed lineage kinase domain-like pseudokinase pMLKL(T357/S358) in human and nonhuman primate CL samples (Macaca mulatta and Callithrix jacchus) implied that necroptosis of luteal cells may be involved. In M. mulatta CL, pMLKL positive staining became detectable only from the mid-late luteal phase onwards, pointing to necroptosis during regression of the CL. Cell death, including necroptosis, was previously observed in cultures of human luteal granulosa cells (GCs), an apt model for the study of the human CL. To explore mechanisms of necroptotic cell death in GCs during culture, we performed a proteomic analysis. The levels of 50 proteins were significantly altered after 5 days of culture. Interconnectivity analysis and immunocytochemistry implicated specifically the ceramide salvage pathway to be enhanced. M. mulatta CL transcriptome analysis indicated in vivo relevance. Perturbing endogenous ceramide generation by fumonisin B1 (FB1) and addition of soluble ceramide (C2-CER) yielded opposite actions on viability of GCs and therefore supported the significance of the ceramide pathway. Morphological changes indicated necrotic cell death in the C2-CER treated group. Studies with the pan caspase blocker zVAD-fmk or the necroptosis blocker necrosulfonamid (NSA) further supported that C2-CER induced necroptosis. Our data pinpoint necroptosis in a physiological process, namely CL regression. This raises the possibility that the primate CL could be rescued by pharmacological inhibition of necroptosis or by interaction with ceramide metabolism.
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Affiliation(s)
- Konstantin Bagnjuk
- 1Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Ludwig-Maximilians-University (LMU), Grosshaderner Strasse 9, Planegg, 82152 Germany
| | - Jan Bernd Stöckl
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU, Feodor-Lynen Strasse 25, Munich, 81375 Germany
| | - Thomas Fröhlich
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU, Feodor-Lynen Strasse 25, Munich, 81375 Germany
| | - Georg Josef Arnold
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU, Feodor-Lynen Strasse 25, Munich, 81375 Germany
| | - Rüdiger Behr
- 3Platform Degenerative Diseases, German Primate Center, Kellnerweg 4, Göttingen, 37077 Germany
| | - Ulrike Berg
- A.R.T. Bogenhausen, Prinzregentenstrasse 69, Munich, 81675 Germany
| | - Dieter Berg
- A.R.T. Bogenhausen, Prinzregentenstrasse 69, Munich, 81675 Germany
| | - Lars Kunz
- Department Biology II, Division of Neurobiology, LMU, Grosshaderner Strasse 2, Planegg, 82152 Germany
| | - Cecily Bishop
- 6Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Avenue, Beaverton, Oregon 97006 USA
| | - Jing Xu
- 6Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Avenue, Beaverton, Oregon 97006 USA
| | - Artur Mayerhofer
- 1Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Ludwig-Maximilians-University (LMU), Grosshaderner Strasse 9, Planegg, 82152 Germany
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Albeituni S, Stiban J. Roles of Ceramides and Other Sphingolipids in Immune Cell Function and Inflammation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1161:169-191. [PMID: 31562630 DOI: 10.1007/978-3-030-21735-8_15] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ceramides are bioactive sphingolipids that support the structure of the plasma membrane and mediate numerous cell-signaling events in eukaryotic cells. The finding that ceramides act as second messengers transducing cellular signals has attracted substantial attention in several fields of Biology. Since all cells contain lipid plasma membranes, the impact of various ceramides, ceramide synthases, ceramide metabolites, and other sphingolipids has been implicated in a vast range of cellular functions including, migration, proliferation, response to external stimuli, and death. The roles of lipids in these functions widely differ among the diverse cell types. Herein, we discuss the roles of ceramides and other sphingolipids in mediating the function of various immune cells; particularly dendritic cells, neutrophils, and macrophages. In addition, we highlight the main studies describing effects of ceramides in inflammation, specifically in various inflammatory settings including insulin resistance, graft-versus-host disease, immune suppression in cancer, multiple sclerosis, and inflammatory bowel disease.
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Affiliation(s)
- Sabrin Albeituni
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Johnny Stiban
- Department of Biology and Biochemistry, Birzeit University, West Bank, Palestine.
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The Role of Ceramide 1-Phosphate in Inflammation, Cellular Proliferation, and Wound Healing. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1159:65-77. [DOI: 10.1007/978-3-030-21162-2_5] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Abstract
Ceramide 1-phosphate (C1P) is a pleiotropic bioactive sphingolipid metabolite capable of regulating key physiologic cell functions and promoting pathologic processes. Concerning pathology, C1P or ceramide kinase (CerK), the enzyme responsible for its biosynthesis in mammalian cells, has been implicated in cancer cell growth, survival, and dissemination and is involved in inflammatory responses associated with different types of cancer cells. The mechanisms or signaling pathways mediating these C1P actions have only been partially described. This chapter reviews recent progress in identifying signal transduction pathways involved in the promotion of cancer cell growth, survival, and dissemination by CerK and C1P.
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Affiliation(s)
- Antonio Gomez-Muñoz
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bilbao, Spain
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Acid sphingomyelinase activity as an indicator of the cell stress in HPV-positive and HPV-negative head and neck squamous cell carcinoma. Med Oncol 2018; 35:58. [PMID: 29564578 DOI: 10.1007/s12032-018-1117-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 03/18/2018] [Indexed: 12/20/2022]
Abstract
Human papillomavirus (HPV) infection, especially HPV-16 and HPV-18, has been increasingly associated with head and neck squamous cell carcinoma. The treatment of HPV-positive squamous cell carcinoma has a better response to both radiotherapy and chemotherapy and presents a better prognosis for the patient. Defining the underlying mechanism of the difference might help in developing future treatment options and could be an important factor in personal therapy planning. Endogenously secreted acid sphingomyelinase (ASMase) levels in the cellular stress caused by irradiation and cisplatin were investigated. MTT assay was performed to evaluate the viability of the treated cells. Keratinocytes were used to evaluate the effects of radiation on normal tissues. Irradiation caused a dose-dependent increase in ASMase activity in both SCC9 HPV-negative, and UDSCC2 HPV-positive cells. ASMase activity in UDSCC2 cells was significantly higher than that in SCC9 cells. UDSCC cells were more sensitive to cisplatin treatment than SCC cells, and the dose-response in the activity was observed in long-time treatments when high doses of cisplatin were used. The results of the current study have clearly showed that HPV positivity should be considered as one of the determinative factors which should be considered when tumor treatments are planned. However, further studies are needed to determine the differences in cellular responses and pathways among HPV-negative and HPV-positive cells.
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Albi E, Cataldi S, Ferri I, Sidoni A, Traina G, Fettucciari K, Ambesi-Impiombato FS, Lazzarini A, Curcio F, Ceccarini MR, Beccari T, Codini M. VDR independent induction of acid-sphingomyelinase by 1,23(OH) 2 D 3 in gastric cancer cells: Impact on apoptosis and cell morphology. Biochimie 2017; 146:35-42. [PMID: 29158006 DOI: 10.1016/j.biochi.2017.11.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/16/2017] [Indexed: 01/11/2023]
Abstract
1 alpha,25-dihydroxyvitamin D3 (1,23(OH)2 D3) is known to play a dual role in cancer, by promoting or inhibiting carcinogenesis via 1,23(OH)2 D3 receptor (VDR) and phosphatase and tensin homolog deleted on chromosome 10 (PTEN). Fok I polymorphism of VDR may indirectly influence the receptor levels through autoregulation. The involvement of neutral sphingomyelinase in the non-classic VDR-mediated genomic pathway response to 1,23(OH)2 D3 treatment has been reported. Until now no information were reported about Fok I polymorphism of VDR in NCI-N87 human gastric cancer cells and the relation between acid sphingomyelinase and 1,23(OH)2 D3. Herein, we showed that NCI-N87 human gastric cancer cells are homozygous for the Fok I 'C' allele; resulting in a three amino acid-truncated protein form of the VDR. Surprisingly 1,23(OH)2 D3 treatments strongly down-regulated the expression of VDR whereas acid sphingomyelinase and PTEN expression were upregulated. No changes of neutral sphingomyelinase expression were observed after 1,23(OH)2 D3 treatment, whereas acid sphingomyelinase activity increased. Furthermore 1,23(OH)2 D3 induced over-expression of caspase 8, CDKN2B, MAP3K5, cytochrome C apoptotic genes. Morphological analysis highlighted some very large round or oval cells and small cells with angular or fusiform extensions, confirmed by MIB-1 immunodetection and Hercep test. Taken together our results indicated that the action of 1,23(OH)2 D3 in gastric cancer cells was independent on 1,23(OH)2 D3 receptor and suggested the acid sphingomyelinase as a possible target to induce molecular events.
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Affiliation(s)
- Elisabetta Albi
- Department of Pharmaceutical Science, University of Perugia, Italy
| | - Samuela Cataldi
- Department of Pharmaceutical Science, University of Perugia, Italy
| | - Ivana Ferri
- Institute of Pathologic Anatomy and Histology, University of Perugia, Italy
| | - Angelo Sidoni
- Institute of Pathologic Anatomy and Histology, University of Perugia, Italy
| | - Giovanna Traina
- Department of Pharmaceutical Science, University of Perugia, Italy
| | | | | | - Andrea Lazzarini
- Laboratory of Nuclear Lipid BioPathology, CRABiON, Perugia, Italy
| | - Francesco Curcio
- Department of Clinical and Biological Sciences, University of Udine, Italy
| | | | - Tommaso Beccari
- Department of Pharmaceutical Science, University of Perugia, Italy
| | - Michela Codini
- Department of Pharmaceutical Science, University of Perugia, Italy.
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Microbubble-based enhancement of radiation effect: Role of cell membrane ceramide metabolism. PLoS One 2017; 12:e0181951. [PMID: 28746357 PMCID: PMC5528834 DOI: 10.1371/journal.pone.0181951] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 07/10/2017] [Indexed: 01/20/2023] Open
Abstract
Ultrasound (US) stimulated microbubbles (MB) is a new treatment approach that sensitizes cancer cells to radiation (XRT). The molecular pathways in this response remain unelucidated, however, previous data has supported a role for cell membrane-metabolism related pathways including an up regulation of UDP glycosyltransferase 8 (UGT8), which catalyzes the transfer of galactose to ceramide, a lipid that is associated with the induction of apoptotic signalling. In this study, the role of UGT8 in responses of prostate tumours to ultrasound-stimulated microbubble radiation enhancement therapy is investigated. Experiments were carried out with cells in vitro and tumours in vivo in which UGT8 levels had been up regulated or down regulated. Genetically modified PC3 cells were treated with XRT, US+MB, or a combination of XRT+US+MB. An increase in the immunolabelling of ceramide was observed in cells where UGT8 was down-regulated as opposed to cells where UGT8 was either not regulated or was up-regulated. Clonogenic assays have revealed a decreased level of cellular survival with the down-regulation of UGT8. Xenograft tumours generated from stably transfected PC3 cells were also treated with US+MB, XRT or US+MB+XRT. Histology demonstrated more cellular damage in tumours with down-regulated UGT8 in comparison with control tumours. In contrast, tumours with up-regulated UGT8 had less damage than control tumours. Power Doppler imaging indicated a reduction in the vascular index with UGT8 down-regulation and photoacoustic imaging revealed a reduction in oxygen saturation. This was contrary to when UGT8 was up regulated. The down regulation of UGT8 led to the accumulation of ceramide resulting in more cell death signalling and therefore, a greater enhancement of radiation effect when vascular disruption takes place through the use of ultrasound-stimulated microbubbles.
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Ocaña-Morgner C, Sales S, Rothe M, Shevchenko A, Jessberger R. Tolerogenic versus Immunogenic Lipidomic Profiles of CD11c + Immune Cells and Control of Immunogenic Dendritic Cell Ceramide Dynamics. THE JOURNAL OF IMMUNOLOGY 2017; 198:4360-4372. [PMID: 28468968 DOI: 10.4049/jimmunol.1601928] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 04/05/2017] [Indexed: 11/19/2022]
Abstract
Lipids affect the membrane properties determining essential biological processes. Earlier studies have suggested a role of switch-activated protein 70 (SWAP-70) in lipid raft formation of dendritic cells. We used lipidomics combined with genetic and biochemical assays to analyze the role of SWAP-70 in lipid dynamics. TLR activation using LPS as a ligand represented a pathogenic immunogenic stimulus, physical disruption of cell-cell contacts a tolerogenic stimulus. Physical disruption, but not LPS, caused an increase of phosphatidylcholine ether and cholesteryl esters in CD11c+ immune cells. An increase of ceramide (Cer) was a hallmark for LPS activation. SWAP-70 was required for regulating the increase and localization of Cers in the cell membrane. SWAP-70 controls Cer accumulation through the regulation of pH-dependent acid-sphingomyelinase activity and of RhoA-dependent transport of endosomal contents to the plasma membrane. Poor accumulation of Cers in Swap70-/- cells caused decreased apoptosis. This shows that two different pathways of activation, immunogenic and tolerogenic, induce different changes in the lipid composition of cultured CD11c+ cells, and highlights the important role of SWAP-70 in Cer dynamics in dendritic cells.
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Affiliation(s)
- Carlos Ocaña-Morgner
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Dresden University of Technology, Dresden 01307, Germany; and
| | - Susanne Sales
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany
| | - Manuela Rothe
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Dresden University of Technology, Dresden 01307, Germany; and
| | - Andrej Shevchenko
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany
| | - Rolf Jessberger
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Dresden University of Technology, Dresden 01307, Germany; and
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Shao Y, Li C, Xu W, Zhang P, Zhang W, Zhao X. miR-31 Links Lipid Metabolism and Cell Apoptosis in Bacteria-Challenged Apostichopus japonicus via Targeting CTRP9. Front Immunol 2017; 8:263. [PMID: 28348559 PMCID: PMC5346533 DOI: 10.3389/fimmu.2017.00263] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 02/23/2017] [Indexed: 12/23/2022] Open
Abstract
The biological functions of microRNAs (miRNAs) have been studied in a number of eukaryotic species. Recent studies on vertebrate animals have demonstrated critical roles of miRNA in immune and metabolic activities. However, studies on the functions of miRNA in invertebrates are very limited. Here, we demonstrated that miR-31 from Apostichopus japonicus disrupts the balance of lipid metabolism, thus resulting in cell apoptosis by targeting complement C1q tumor necrosis factor-related protein 9 (AjCTRP9), a novel adipokine with pleiotropic functions in immunity and metabolism. Lipidomic analysis suggested that the intercellular lipid metabolites were markedly altered, and three ceramide (Cer) species synchronously increased in the AjCTRP9-silenced coelomocytes. Moreover, exogenous Cer exposure significantly induced apoptosis in the coelomocytes in vivo, in agreement with findings from miR-31 mimic- or AjCTRP9 small-interfering RNA-transfected coelomocytes. Furthermore, we found that the imbalance in sphingolipid metabolism triggered by the overproduction of Cers ultimately resulted in the activation of the apoptosis initiator caspase-8 and executioner caspase-3. Our findings provide the first direct evidence that miR-31 negatively modulates the expression of AjCTRP9 and disturbance of Cer channels, thus leading to caspase-3- and caspase-8-dependent apoptosis, during the interactions between pathogens and host.
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Affiliation(s)
- Yina Shao
- School of Marine Sciences, Ningbo University , Ningbo , China
| | - Chenghua Li
- School of Marine Sciences, Ningbo University , Ningbo , China
| | - Wei Xu
- Agricultural Center, Louisiana State University , Baton Rouge, LA , USA
| | - Pengjuan Zhang
- School of Marine Sciences, Ningbo University , Ningbo , China
| | - Weiwei Zhang
- School of Marine Sciences, Ningbo University , Ningbo , China
| | - Xuelin Zhao
- School of Marine Sciences, Ningbo University , Ningbo , China
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Jones ZB, Ren Y. Sphingolipids in spinal cord injury. INTERNATIONAL JOURNAL OF PHYSIOLOGY, PATHOPHYSIOLOGY AND PHARMACOLOGY 2016; 8:52-69. [PMID: 27570580 PMCID: PMC4981650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
Spinal cord injury (SCI) is a debilitating condition that affects millions of individuals worldwide. Despite progress over the last few decades, the molecular mechanisms of secondary SCI that continue to occur days and weeks after the original trauma remain poorly understood. As a result, current therapies for SCI are only marginally effective. Sphingolipids, a diverse class of bioactive lipids, have been shown to regulate SCI repair and key secondary injury processes such as apoptosis, ischemia and inflammation. This review will discuss the numerous roles of sphingolipids and highlight the potential of sphingolipid-targeted therapies for SCI.
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Affiliation(s)
- Zachary B Jones
- Department of Biomedical Sciences, Florida State UniversityTallahassee, FL, USA
| | - Yi Ren
- Department of Biomedical Sciences, Florida State UniversityTallahassee, FL, USA
- Institute of Inflammation and Diseases, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou, China
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del Solar V, Lizardo D, Li N, Hurst J, Brais C, Atilla-Gokcumen G. Differential Regulation of Specific Sphingolipids in Colon Cancer Cells during Staurosporine-Induced Apoptosis. ACTA ACUST UNITED AC 2015; 22:1662-70. [DOI: 10.1016/j.chembiol.2015.11.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 11/02/2015] [Accepted: 11/06/2015] [Indexed: 01/06/2023]
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