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Seo SY, Ju WS, Kim K, Kim J, Yu JO, Ryu JS, Kim JS, Lee HA, Koo DB, Choo YK. Quercetin Induces Mitochondrial Apoptosis and Downregulates Ganglioside GD3 Expression in Melanoma Cells. Int J Mol Sci 2024; 25:5146. [PMID: 38791186 PMCID: PMC11121576 DOI: 10.3390/ijms25105146] [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: 04/10/2024] [Revised: 05/03/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Malignant melanoma represents a form of skin cancer characterized by a bleak prognosis and heightened resistance to traditional therapies. Quercetin has demonstrated notable anti-carcinogenic, anti-inflammatory, anti-oxidant, and pharmacological effects across various cancer types. However, the intricate relationship between quercetin's anti-cancer properties and ganglioside expression in melanoma remains incompletely understood. In this study, quercetin manifests specific anti-proliferative, anti-migratory, and cell-cycle arrest effects, inducing mitochondrial dysfunction and apoptosis in two melanoma cancer cell lines. This positions quercetin as a promising candidate for treating malignant melanoma. Moreover, our investigation indicates that quercetin significantly reduces the expression levels of ganglioside GD3 and its synthetic enzyme. Notably, this reduction is achieved through the inhibition of the FAK/paxillin/Akt signaling pathway, which plays a crucial role in cancer development. Taken together, our findings suggest that quercetin may be a potent anti-cancer drug candidate for the treatment of malignant melanoma.
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Affiliation(s)
- Sang Young Seo
- Department of Biological Science, College of Natural Sciences, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea; (S.Y.S.); (W.S.J.); (K.K.); (J.K.); (J.O.Y.)
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, 1500 Kongjwipatjwi-ro, Iseo-myeon, Wanju-gun 55365, Jeonbuk, Republic of Korea
| | - Won Seok Ju
- Department of Biological Science, College of Natural Sciences, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea; (S.Y.S.); (W.S.J.); (K.K.); (J.K.); (J.O.Y.)
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, 1500 Kongjwipatjwi-ro, Iseo-myeon, Wanju-gun 55365, Jeonbuk, Republic of Korea
| | - Kyongtae Kim
- Department of Biological Science, College of Natural Sciences, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea; (S.Y.S.); (W.S.J.); (K.K.); (J.K.); (J.O.Y.)
| | - Juhwan Kim
- Department of Biological Science, College of Natural Sciences, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea; (S.Y.S.); (W.S.J.); (K.K.); (J.K.); (J.O.Y.)
| | - Jin Ok Yu
- Department of Biological Science, College of Natural Sciences, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea; (S.Y.S.); (W.S.J.); (K.K.); (J.K.); (J.O.Y.)
| | - Jae-Sung Ryu
- Division of Biodrug Evaluation, New Drug Development Center, Osong Medical Innovation Foundation (K-Bio Health), Cheongju 28160, Chungbuk, Republic of Korea;
| | - Ji-Su Kim
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56216, Jeonbuk, Republic of Korea;
| | - Hyun-A Lee
- Center for Animal Resources Development, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea;
| | - Deog-Bon Koo
- Department of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Gyeongbuk, Republic of Korea;
| | - Young-Kug Choo
- Department of Biological Science, College of Natural Sciences, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea; (S.Y.S.); (W.S.J.); (K.K.); (J.K.); (J.O.Y.)
- Institute for Glycoscience, Wonkwang University, Iksan 54538, Jeonbuk, Republic of Korea
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Yesmin F, Furukawa K, Kambe M, Ohmi Y, Bhuiyan RH, Hasnat MA, Mizutani M, Tajima O, Hashimoto N, Tsuchida A, Kaneko K, Furukawa K. Extracellular vesicles released from ganglioside GD2-expressing melanoma cells enhance the malignant properties of GD2-negative melanomas. Sci Rep 2023; 13:4987. [PMID: 36973292 PMCID: PMC10042834 DOI: 10.1038/s41598-023-31216-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 03/08/2023] [Indexed: 03/29/2023] Open
Abstract
Exosomes (small extracellular vesicles: EVs) have attracted increasing attention from basic scientists and clinicians since they play important roles in cell-to-cell communication in various biological processes. Various features of EVs have been elucidated regarding their contents, generation and secretion mechanisms, and functions in inflammation, regeneration, and cancers. These vesicles are reported to contain proteins, RNAs, microRNAs, DNAs, and lipids. Although the roles of individual components have been rigorously studied, the presence and roles of glycans in EVs have rarely been reported. In particular, glycosphingolipids in EVs have not been investigated to date. In this study, the expression and function of a representative cancer-associated ganglioside, GD2, in malignant melanomas was investigated. Generally, cancer-associated gangliosides have been shown to enhance malignant properties and signals in cancers. Notably, EVs derived from GD2-expressing melanomas enhanced the malignant phenotypes of GD2-negative melanomas, such as cell growth, invasion, and cell adhesion, in a dose-dependent manner. The EVs also induced increased phosphorylation of signaling molecules such as EGF receptor and focal adhesion kinase. These results suggest that EVs released from cancer-associated ganglioside-expressing cells exert many functions that have been reported as a function of these gangliosides and regulate microenvironments, including total aggravation of heterogeneous cancer tissues, leading to more malignant and advanced cancer types.
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Affiliation(s)
- Farhana Yesmin
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Keiko Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Mariko Kambe
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Yuhsuke Ohmi
- Department of Clinical Engineering, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Robiul Hasan Bhuiyan
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
- Department of Biochemistry and Molecular Biology, University of Chittagong, 4331, Chittagong, Bangladesh
| | - Mohammad Abul Hasnat
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Momoka Mizutani
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Orie Tajima
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Noboru Hashimoto
- Department of Tissue Regeneration, Tokushima University School of Dentistry, Kuramoto-Cho 3, Tokushima, 770-8504, Japan
| | - Akiko Tsuchida
- Laboratory of Glyco- Bioengineering, The Noguchi Institute, Itabashi, 173-0003, Japan
| | - Kei Kaneko
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan
| | - Koichi Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Matsumoto 1200, Kasugai, Aichi, 487-8501, Japan.
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Yesmin F, Bhuiyan RH, Ohmi Y, Yamamoto S, Kaneko K, Ohkawa Y, Zhang P, Hamamura K, Cheung NKV, Kotani N, Honke K, Okajima T, Kambe M, Tajima O, Furukawa K, Furukawa K. Ganglioside GD2 Enhances the Malignant Phenotypes of Melanoma Cells by Cooperating with Integrins. Int J Mol Sci 2021; 23:ijms23010423. [PMID: 35008849 PMCID: PMC8745508 DOI: 10.3390/ijms23010423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/12/2021] [Accepted: 12/28/2021] [Indexed: 11/16/2022] Open
Abstract
Gangliosides have been considered to modulate cell signals in the microdomain of the cell membrane, lipid/rafts, or glycolipid-enriched microdomain/rafts (GEM/rafts). In particular, cancer-associated gangliosides were reported to enhance the malignant properties of cancer cells. In fact, GD2-positive (GD2+) cells showed increased proliferation, invasion, and adhesion, compared with GD2-negative (GD2-) cells. However, the precise mechanisms by which gangliosides regulate cell signaling in GEM/rafts are not well understood. In order to analyze the roles of ganglioside GD2 in the malignant properties of melanoma cells, we searched for GD2-associating molecules on the cell membrane using the enzyme-mediated activation of radical sources combined with mass spectrometry, and integrin β1 was identified as a representative GD2-associating molecule. Then, we showed the physical association of GD2 and integrin β1 by immunoprecipitation/immunoblotting. Close localization was also shown by immuno-cytostaining and the proximity ligation assay. During cell adhesion, GD2+ cells showed multiple phospho-tyrosine bands, i.e., the epithelial growth factor receptor and focal adhesion kinase. The knockdown of integrin β1 revealed that the increased malignant phenotypes in GD2+ cells were clearly cancelled. Furthermore, the phosphor-tyrosine bands detected during the adhesion of GD2+ cells almost completely disappeared after the knockdown of integrin β1. Finally, immunoblotting to examine the intracellular distribution of integrins during cell adhesion revealed that large amounts of integrin β1 were localized in GEM/raft fractions in GD2+ cells before and just after cell adhesion, with the majority being localized in the non-raft fractions in GD2- cells. All these results suggest that GD2 and integrin β1 cooperate in GEM/rafts, leading to enhanced malignant phenotypes of melanomas.
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Affiliation(s)
- Farhana Yesmin
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
- Department of Molecular Biochemistry, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan;
| | - Robiul H. Bhuiyan
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
| | - Yuhsuke Ohmi
- Department of Medical Technology, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan;
| | - Satoko Yamamoto
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
| | - Kei Kaneko
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
| | - Yuki Ohkawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
- Department of Glyco-Oncology and Medical Biochemistry, Osaka International Cancer Institute, Osaka 541-8567, Japan
| | - Pu Zhang
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
- Department of Molecular Biochemistry, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan;
| | - Kazunori Hamamura
- Department of Pharmacology, Aichi Gakuin University School of Dentistry, Nagoya 464-8650, Japan;
| | | | - Norihiro Kotani
- Department of Biochemistry, Saitama Medical University, Saitama 350-0495, Japan;
| | - Koichi Honke
- Department of Biochemistry, Kochi University School of Medicine, Nangoku 783-8505, Japan;
| | - Tetsuya Okajima
- Department of Molecular Biochemistry, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan;
| | - Mariko Kambe
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
| | - Orie Tajima
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
| | - Keiko Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
| | - Koichi Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Japan; (F.Y.); (R.H.B.); (S.Y.); (K.K.); (Y.O.); (P.Z.); (M.K.); (O.T.); (K.F.)
- Department of Molecular Biochemistry, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan;
- Correspondence: ; Tel.: +81-568-51-9512
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Hisaki H, Okazaki T, Kubota M, Nakane M, Fujimaki T, Nakayama H, Nakagomi T, Tamura A, Masuda H. L-PDMP improves glucosylceramide synthesis and behavior in rats with focal ischemia. Neurol Res 2013; 30:979-84. [DOI: 10.1179/016164108x339396] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Jennemann R, Gröne HJ. Cell-specific in vivo functions of glycosphingolipids: lessons from genetic deletions of enzymes involved in glycosphingolipid synthesis. Prog Lipid Res 2013; 52:231-48. [PMID: 23473748 DOI: 10.1016/j.plipres.2013.02.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 02/20/2013] [Accepted: 02/25/2013] [Indexed: 11/16/2022]
Abstract
Glycosphingolipids (GSLs) are believed to be involved in many cellular events including trafficking, signaling and cellular interactions. Over the past decade considerable progress was made elucidating the function of GSLs by generating and exploring animal models with GSL-deficiency. Initial studies focused on exploring the role of complex sialic acid containing GSLs (gangliosides) in neuronal tissue. Although complex gangliosides were absent, surprisingly, the phenotype observed was rather mild. In subsequent studies, several mouse models with combinations of gene-deletions encoding GSL-synthesizing enzymes were developed. The results indicated that reduction of GSL-complexity correlated with severity of phenotypes. However, in these mice, accumulation of precursor GSLs or neobiosynthesized GSL-series seemed to partly compensate the loss of GSLs. Thus, UDP-glucose:ceramide glucosyltransferase (Ugcg), catalyzing the basic step of the glucosylceramide-based GSL-biosynthesis, was genetically disrupted. A total systemic deletion of Ugcg caused early embryonic lethality. Therefore, Ugcg was eliminated in a cell-specific manner using the cre/loxP-system. New insights into the cellular function of GSLs were gained. It was demonstrated that neurons require GSLs for differentiation and maintenance. In keratinocytes, preservation of the skin barrier depends on GSL synthesis and in enterocytes of the small intestine GSLs are involved in endocytosis and vesicular transport.
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Affiliation(s)
- Richard Jennemann
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany.
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Yamashita T. Glycosphingolipid modification: structural diversity, functional and mechanistic integration of diabetes. Diabetes Metab J 2011; 35:309-16. [PMID: 21977449 PMCID: PMC3178690 DOI: 10.4093/dmj.2011.35.4.309] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Glycosphingolipids (GSLs) are present in all mammalian cell plasma membranes and intracellular membrane structures. They are especially concentrated in plasma membrane lipid domains that are specialized for cell signaling. Plasma membranes have typical structures called rafts and caveola domain structures, with large amounts of sphingolipids, cholesterol, and sphingomyelin. GSLs are usually observed in many organs ubiquitously. However, GSLs, including over 400 derivatives, participate in diverse cellular functions. Several studies indicate that GSLs might have an effect on signal transduction related to insulin receptors and epidermal growth factor receptors. GSLs may modulate immune responses by transmitting signals from the exterior to the interior of the cell. Guillain-Barré syndrome is one of the autoimmune disorders characterized by symmetrical weakness in the muscles of the legs. The targets of the immune response are thought to be gangliosides, which are one group of GSLs. Other GSLs may serve as second messengers in several signaling pathways that are important to cell survival or programmed cell death. In the search for clear evidence that GSLs may play critical roles in various biological functions, many researchers have made genetically engineered mice. Before the era of gene manipulation, spontaneous animal models or chemical-induced disease models were used.
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Affiliation(s)
- Tadashi Yamashita
- Graduate School of Advanced Life Science, Hokkaido University, Sapporo, Japan
- World Class University Program, Kyungpook National University School of Medicine, Daegu, Korea
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Niimi K, Nishioka C, Miyamoto T, Takahashi E, Miyoshi I, Itakura C, Yamashita T. Impairment of neuropsychological behaviors in ganglioside GM3-knockout mice. Biochem Biophys Res Commun 2011; 406:524-8. [PMID: 21333627 DOI: 10.1016/j.bbrc.2011.02.071] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 02/14/2011] [Indexed: 11/26/2022]
Abstract
The ganglioside GM3 synthase (SAT-I), encoded by a single-copy gene, is a primary glycosyltransferase for the synthesis of complex gangliosides. Although its expression is tightly controlled during early embryo development and postnatal development and maturation in the brain, the physiological role of ganglioside GM3 in the regulation of neuronal functions has not been elucidated. In the present study, we examined motor activity, cognitive and emotional behaviors, and drug administration in juvenile GM3-knockout (GM3-KO) mice. GM3-KO male and female mice showed hyperactivity in the motor activity test, Y-maze test, and elevated plus maze test. In the Y-maze test, there was significantly less spontaneous alternation behavior in GM3-KO male mice than in wild-type mice. In the elevated plus maze test, the amount of time spent on the open arms by GM3-KO male mice was significantly higher than that of sex-matched wild-type mice. In contrast, there was no significant difference between GM3-KO and wild-type female mice in these tests. Thus, juvenile GM3-KO mice show gender-specific phenotypes resembling attention-deficit hyperactivity disorder (ADHD), namely hyperactivity, reduced attention, and increased impulsive behaviors. However, administration of methylphenidate hydrochloride (MPH) did not ameliorate hyperactivity in either male or female GM3-KO mice. Although these data demonstrate the involvement of ganglioside GM3 in ADHD and the ineffectiveness of MPH, the first-choice psychostimulant for ADHD medication, our studies indicate that juvenile GM3-KO mice are a useful tool for neuropsychological studies.
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Affiliation(s)
- Kimie Niimi
- Riken Brain Science Institute, Saitama 351-0198, Japan
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Inokuchi JI. Neurotrophic and neuroprotective actions of an enhancer of ganglioside biosynthesis. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2009; 85:319-36. [PMID: 19607978 DOI: 10.1016/s0074-7742(09)85022-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
To address the role of brain gangliosides in synaptic plasticity, the synthetic ceramide analog, 1-phenyl-2-decanoylamino-3-morpholino-1-propanol (PDMP) was used to manipulate the biosynthesis of gangliosides in cultured cortical neurons. Spontaneous synchronized oscillatory activity of intracellular Ca(2+) between the neurons, which represents synapse formation, was suppressed by the depletion of endogenous gangliosides by d-threo-PDMP, an inhibitor of glucosylceramide synthase. On the other hand, the enantiomer of inhibitor, l-threo-PDMP, could elevate cellular levels of gangliosides by upregulating several glycosyltransferases responsible for ganglioside biosynthesis. This review presents our findings on the neurotrophic actions of l-threo-PDMP in vitro and in vivo. We found that l-PDMP could upregulate neurite outgrowth, and functional synapse formation through activating GM3, GD3, and GQ1b synthases. Simultaneously, the activity of p42 mitogen-activated protein kinase was also facilitated by l-PDMP. To evaluate the efficacy of this drug on long term memory, rats were trained for 2 weeks using an 8-arm radial maze task, and then forebrain ischemia was induced by four-vessel occlusion. Repeated treatment of l-PDMP starting 24h after the ischemia, improved the deficit of the well-learned spatial memory and prevented the ischemia-induced apoptosis in hippocampus, demonstrating the potential therapeutic use of the ceramide analog for treatment of neurodegenerative disorders.
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Affiliation(s)
- Jin-Ichi Inokuchi
- Division of Glycopathology, Institute of Molecular Biomembranes and Glycobiology, Tohoku Pharmaceutical University, 4-4-1, komatsushima, Aoba-ku, Sendai 981-8558, Miyagi, Japan
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Yamashita T. Biological function of glycosphingolipids—mouse early stage development and neuronal function—. TRENDS GLYCOSCI GLYC 2009. [DOI: 10.4052/tigg.21.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Tadashi Yamashita
- Frontier Research Center for Post-genome Science and Technology, Hokkaido University
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Loberto N, Prioni S, Bettiga A, Chigorno V, Prinetti A, Sonnino S. The membrane environment of endogenous cellular prion protein in primary rat cerebellar neurons. J Neurochem 2005; 95:771-83. [PMID: 16248888 DOI: 10.1111/j.1471-4159.2005.03397.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We studied the membrane environment of cellular prion protein in primary cultured rat cerebellar neurons differentiated in vitro. In these cells, about 45% of total cellular prion protein (corresponding to a 35-fold enrichment) is associated with a low-density, sphingolipid- and cholesterol-enriched membrane fraction, that can be separated by flotation on sucrose gradient. Biotinylation experiments indicated that almost all prion protein recovered in this fraction was exposed at the cell surface. Prion protein was efficiently separated from this fraction by a monoclonal antibody immuno-separation procedure. Under conditions designed to preserve lipid-mediated membrane organization, several proteins were found in the prion protein-enriched membrane domains (i.e. the non-receptor tyrosine kinases Lyn and Fyn and the neuronal glycosylphosphatidylinositol-anchored protein Thy-1). The prion protein-rich membrane domains contained, as well, about 50% of the sphingolipids, cholesterol and phosphatidylcholine present in the sphingolipid-enriched membrane fraction. All main sphingolipids, including sphingomyelin, neutral glycosphingolipids and gangliosides, were similarly enriched in the prion protein-rich membrane domains. Thus, prion protein plasma membrane environment in differentiated neurons resulted to be a complex entity, whose integrity requires a network of lipid-mediated non-covalent interactions.
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Affiliation(s)
- Nicoletta Loberto
- Center of Excellence on Neurodegenerative Diseases, Department of Medical Chemistry, Biochemistry and Biotechnology, University of Milan, Segrate, Italy
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11
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Jennemann R, Sandhoff R, Wang S, Kiss E, Gretz N, Zuliani C, Martin-Villalba A, Jäger R, Schorle H, Kenzelmann M, Bonrouhi M, Wiegandt H, Gröne HJ. Cell-specific deletion of glucosylceramide synthase in brain leads to severe neural defects after birth. Proc Natl Acad Sci U S A 2005; 102:12459-64. [PMID: 16109770 PMCID: PMC1194904 DOI: 10.1073/pnas.0500893102] [Citation(s) in RCA: 158] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Sialic acid-containing glycosphingolipids, i.e., gangliosides, constitute a major component of neuronal cells and are thought to be essential for brain function. UDP-glucose:ceramide glucosyltransferase (Ugcg) catalyzes the initial step of glycosphingolipid (GSL) biosynthesis. To gain insight into the role of GSLs in brain development and function, a cell-specific disruption of Ugcg was performed as indicated by the absence of virtually all glucosylceramide-based GSLs. Shortly after birth, mice showed dysfunction of cerebellum and peripheral nerves, associated with structural defects. Axon branching of Purkinje cells was significantly reduced. In primary cultures of neurons, dendritic complexity was clearly diminished, and pruning occurred early. Myelin sheaths of peripheral nerves were broadened and focally severely disorganized. GSL deficiency also led to a down-regulation of gene expression sets involved in brain development and homeostasis. Mice died approximately 3 weeks after birth. These results imply that GSLs are essential for brain maturation.
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Affiliation(s)
- Richard Jennemann
- Abteilungen Zelluläre und Molekulare Pathologie, Deutsches Krebsforschungszentrum Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany.
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Rösner H. Developmental expression and possible roles of gangliosides in brain development. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2003; 32:49-73. [PMID: 12827971 DOI: 10.1007/978-3-642-55557-2_3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- H Rösner
- Institute of Zoology, University of Hohenheim-Stuttgart, Garbenstr. 30, 70593 Stuttgart, Germany
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Yamashita T, Wada R, Sasaki T, Deng C, Bierfreund U, Sandhoff K, Proia RL. A vital role for glycosphingolipid synthesis during development and differentiation. Proc Natl Acad Sci U S A 1999; 96:9142-7. [PMID: 10430909 PMCID: PMC17746 DOI: 10.1073/pnas.96.16.9142] [Citation(s) in RCA: 359] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Glycosphingolipids (GSLs) are believed to be integral for the dynamics of many cell membrane events, including cellular interactions, signaling, and trafficking. We have investigated their roles in development and differentiation by eliminating the major synthesis pathway of GSLs through targeted disruption of the Ugcg gene encoding glucosylceramide synthase. In the absence of GSL synthesis, embryogenesis proceeded well into gastrulation with differentiation into primitive germ layers and patterning of the embryo but was abruptly halted by a major apoptotic process. In vivo, embryonic stem cells deficient in GSL synthesis were again able to differentiate into endodermal, mesodermal, and ectodermal derivatives but were strikingly deficient in their ability to form well differentiated tissues. In vitro, however, hematopoietic and neuronal differentiation could be induced. The results demonstrate that the synthesis of GSL structures is essential for embryonic development and for the differentiation of some tissues and support the concept that GSLs are involved in crucial cell interactions mediating these processes.
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Affiliation(s)
- T Yamashita
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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14
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Golard A. Anti-GM3 antibodies activate calcium inflow and inhibit platelet-derived growth factor beta receptors (PDGFbetar) in T51B rat liver epithelial cells. Glycobiology 1998; 8:1221-5. [PMID: 9858644 DOI: 10.1093/glycob/8.12.1221] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Glycolipids expressed in the plasma membrane regulate a variety of cellular processes including intracellular calcium dynamics. We used flow cytometry to characterize the glycoconjugates on the plasma membrane of T51B liver epithelial cells. Antibodies against glycolipids found to be present were tested for their ability elevate intracellular calcium. An antibody against GM3 (DH2) nearly doubles intracellular calcium while an antibody against type II chains (1B2) increases calcium to nearly four times the baseline level, similar to levels obtained with epidermal growth factor (EGF). The antibodies stimulated calcium inflow but did not trigger calcium release from internal stores. In addition DH2 but not 1B2 inhibited platelet-derived growth factor beta receptor (PDGFbetar) function. This is the first demonstration of activation of calcium inflow by agents that bind GM3 and type II chains. The ganglioside-mediated calcium inflow is likely to stimulate secretion by these liver cells.
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Affiliation(s)
- A Golard
- Northwest Hospital, Molecular Medicine, 120 Northgate Plaza, Suite 230, Seattle, WA 98125, USA
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Rahmann H, Jonas U, Kappel T, Hilderbrandt H. Differential involvement of gangliosides versus phospholipids in the process of temperature adaptation in vertebrates. A comparative phenomenological and physicochemical study. Ann N Y Acad Sci 1998; 845:72-91. [PMID: 9668344 DOI: 10.1111/j.1749-6632.1998.tb09663.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The data presented support the idea that gangliosides are involved in thermal adaptation of neuronal membranes. Brain ganglioside patterns from cold-blooded vertebrate species living in different climates and from mammals during ontogenetical or seasonal changes in their body temperature were compared. The general rule "the lower the environmental temperature the more polar is the composition of brain gangliosides" as derived from these data was confirmed by the changes in ganglioside patterns evoked by experimentally induced cold acclimation of fish. To assess whether gangliosides are able to modulate the temperature-dependent properties of membranes, artificial mono- and bilayer membrane model systems were used. Incorporation of gangliosides in the model bilayer membranes evoked drastic changes in the dynamics of a peptide channel, suggesting that gangliosides are able to modulate basic membrane properties. In addition, data on thermosensitivity of ganglioside-calcium interactions and on surface behavior of gangliosides in monolayers are reviewed.
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Affiliation(s)
- H Rahmann
- Institute of Zoology, University of Hohenheim, Stuttgart, Germany.
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16
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Schauer R, Kamerling JP. Chemistry, biochemistry and biology of sialic acids ☆. NEW COMPREHENSIVE BIOCHEMISTRY 1997; 29. [PMCID: PMC7147860 DOI: 10.1016/s0167-7306(08)60624-9] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Roland Schauer
- Biochemisches Institut, Christian-Albrechls-Universität zu Kiel, Germany
| | - Johannis P. Kamerling
- Bijuoet Center, Department of Bio-Organic Chemistry, Utrecht University, The Netherlands
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17
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Wang F, Buckley NE, Olivera A, Goodemote KA, Su Y, Spiegel S. Involvement of sphingolipids metabolites in cellular proliferation modulated by ganglioside GM1. Glycoconj J 1996; 13:937-45. [PMID: 8981085 DOI: 10.1007/bf01053189] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The B subunit of cholera toxin, which binds specifically to ganglioside GM1, is mitogenic for quiescent Swiss 3T3 fibroblasts. Recently, sphingolipids metabolites, ceramide, sphingosine and sphingosine-1-phosphate, have been implicated as second messengers in cell growth regulation and differentiation. In this paper, we examined the possibility that interaction of the B subunit with membrane GM1 leads to alterations in metabolism of glycosphingolipids and that increased levels of sphingolipids metabolites may mediate the biological effects of the B subunit. While the B subunit did not induce a change in the level of ceramide or sphingosine, the level of sphingosine-1-phosphate was rapidly and transiently increased. The B subunit also transiently activated cytosolic sphingosine kinase activity, which catalyzes the phosphorylation of the primary hydroxyl group of sphingosine to produce sphingosine-1-phosphate. To determine whether the increase in sphingosine-1-phosphate level plays a role in B subunit-induced mitogenicity, we used a competitive inhibitor of sphingosine kinase, D,L-threo-dihydrosphingosine. D,L-thereo-Dihydrosphingosine not only inhibited B subunit-induced DNA synthesis by 26%, it also reduced its ability to stimulate DNA-binding activity of the transcription factor AP-1. This sphingosine kinase inhibitor also inhibited B subunit-induced increases in the activity of cell cycle-regulated, cyclin-dependent serine/threonine kinases, cdk2 and p34cdc2. These findings suggest that sphingosine-1-phosphate may play a role in the signal transduction pathways activated by binding of the B subunit to endogenous ganglioside GM1.
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Affiliation(s)
- F Wang
- Department of Biochemistry and Molecular Biology, Georgetown University Medical Center, Washington, DC 20007, USA
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18
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Abstract
GM2 ganglioside, although scarce in normal adult brain, is the predominant ganglioside accumulating in several types of lysosomal disorders, most notably Tay-Sachs disease. Pyramidal neurons of cerebral cortex in Tay-Sachs, as well as many other types of neuronal storage disorders, are known to exhibit a phenomenon believed unique to storage disorders: growth of ectopic dendrites. Recent studies have shown that a common metabolic abnormality shared by storage diseases with ectopic dendrite growth is the abnormal accumulation of GM2 ganglioside. The correlation between increased levels of GM2 and the presence of ectopic dendrites has been found in both ganglioside and nonganglioside storage disorders, the latter including sphingomyelin-cholesterol lipidosis, mucopolysaccharidosis, and alpha-mannosidosis. Quantitative HPTLC analysis has shown that increases in GM2 occur in proportion to the incidence of ectopic dendrite growth, whereas other gangliosides, including GM1, lack similar increases. Immunocytochemical studies of all nonganglioside storage diseases which exhibit ectopic dendritogenesis have revealed heightened GM2 ganglioside-immunoreactivity in the cortical pyramidal cell population, whereas nerurons in normal adult brain exhibit little or no staining for this ganglioside. Further, studies examining disease development have consistently shown that accumulation of GM2 ganglioside precedes growth of ectopic dendrites, indicating that it is not simply occurring secondary to new membrane production. These findings have prompted an examination for a similar relationship between GM2 ganglioside and dendritogenesis in cortical neurons of normal developing brain. Results show that GM2 ganglioside-immunoreactivity is consistently elevated in immature neurons during the period when they are undergoing active dendritic initiation, but this staining diminishes dramatically as the dendritic trees of these cells mature. Collectively, these studies on diseased and normal brain offer compelling evidence that GM2 ganglioside plays a pivotal role in the regulation of dendritogenesis in cortical pyramidal neurons.
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Affiliation(s)
- S U Walkley
- Department of Neuroscience, Rose F. Kennedy Center for Research in Mental Retardation and Human Development, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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