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El Hajjar L, Page A, Bridot C, Cantrelle FX, Landrieu I, Smet-Nocca C. Regulation of Glycogen Synthase Kinase-3β by Phosphorylation and O-β-Linked N-Acetylglucosaminylation: Implications on Tau Protein Phosphorylation. Biochemistry 2024; 63:1513-1533. [PMID: 38788673 DOI: 10.1021/acs.biochem.4c00095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Glycogen synthase kinase 3 (GSK3) plays a pivotal role in signaling pathways involved in insulin metabolism and the pathogenesis of neurodegenerative disorders. In particular, the GSK3β isoform is implicated in Alzheimer's disease (AD) as one of the key kinases involved in the hyperphosphorylation of tau protein, one of the neuropathological hallmarks of AD. As a constitutively active serine/threonine kinase, GSK3 is inactivated by Akt/PKB-mediated phosphorylation of Ser9 in the N-terminal disordered domain, and for most of its substrates, requires priming (prephosphorylation) by another kinase that targets the substrate to a phosphate-specific pocket near the active site. GSK3 has also been shown to be post-translationally modified by O-linked β-N-acetylglucosaminylation (O-GlcNAcylation), with still unknown functions. Here, we have found that binding of Akt inhibits GSK3β kinase activity on both primed and unprimed tau substrates. Akt-mediated Ser9 phosphorylation restores the GSK3β kinase activity only on primed tau, thereby selectively inactivating GSK3β toward unprimed tau protein. Additionally, we have shown that GSK3β is highly O-GlcNAcylated at multiple sites within the kinase domain and the disordered N- and C-terminal domains, including Ser9. In contrast to Akt-mediated regulation, neither the O-GlcNAc transferase nor O-GlcNAcylation significantly alters GSK3β kinase activity, but high O-GlcNAc levels reduce Ser9 phosphorylation by Akt. Reciprocally, Akt phosphorylation downregulates the overall O-GlcNAcylation of GSK3β, indicating a crosstalk between both post-translational modifications. Our results indicate that specific O-GlcNAc profiles may be involved in the phosphorylation-dependent Akt-mediated regulation of GSK3β kinase activity.
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Affiliation(s)
- Léa El Hajjar
- Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, University of Lille, Lille F-59000, France
- CNRS EMR9002 Integrative Structural Biology, Lille F-59000, France
| | - Adeline Page
- Protein Science Facility, SFR Biosciences Univ Lyon, ENS de Lyon, CNRS UAR3444, Inserm US8, Université Claude Bernard Lyon 1, 50 Avenue Tony Garnier, Lyon F-69007, France
| | - Clarisse Bridot
- Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, University of Lille, Lille F-59000, France
- CNRS EMR9002 Integrative Structural Biology, Lille F-59000, France
| | - François-Xavier Cantrelle
- Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, University of Lille, Lille F-59000, France
- CNRS EMR9002 Integrative Structural Biology, Lille F-59000, France
| | - Isabelle Landrieu
- Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, University of Lille, Lille F-59000, France
- CNRS EMR9002 Integrative Structural Biology, Lille F-59000, France
| | - Caroline Smet-Nocca
- Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, University of Lille, Lille F-59000, France
- CNRS EMR9002 Integrative Structural Biology, Lille F-59000, France
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Arumugam S, Qin Y, Liang Z, Han SN, Boodapati SLT, Li J, Lu Q, Flavell RA, Mehal WZ, Ouyang X. GSK3β mediates the spatiotemporal dynamics of NLRP3 inflammasome activation. Cell Death Differ 2022; 29:2060-2069. [PMID: 35477991 PMCID: PMC9525599 DOI: 10.1038/s41418-022-00997-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 02/03/2023] Open
Abstract
Subcellular machinery of NLRP3 is essential for inflammasome assembly and activation. However, the stepwise process and mechanistic basis of NLRP3 engagement with organelles remain unclear. Herein, we demonstrated glycogen synthase kinase 3β (GSK3β) as a molecular determinant for the spatiotemporal dynamics of NLRP3 inflammasome activation. Using live cell multispectral time-lapse tracking acquisition, we observed that upon stimuli NLRP3 was transiently associated with mitochondria and subsequently recruited to the Golgi network (TGN) where it was retained for inflammasome assembly. This occurred in relation to the temporal contact of mitochondria to Golgi apparatus. NLRP3 stimuli initiate GSK3β activation with subsequent binding to NLRP3, facilitating NLRP3 recruitment to mitochondria and transition to TGN. GSK3β activation also phosphorylates phosphatidylinositol 4-kinase 2 Α (PI4k2A) in TGN to promote sustained NLRP3 oligomerization. Our study has identified the interplay between GSK3β signaling and the organelles dynamics of NLRP3 required for inflammasome activation and opens new avenues for therapeutic intervention.
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Affiliation(s)
- Suyavaran Arumugam
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Yanqin Qin
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Ziwen Liang
- Department of Endocrinology, First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Sheng-Na Han
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - S L Tejaswi Boodapati
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Junzi Li
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Qiuxia Lu
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Richard A Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, 06520, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, 20815-6789, USA
| | - Wajahat Z Mehal
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA.
- VA Connecticut Healthcare System, West Haven, CT, 06516-2770, USA.
| | - Xinshou Ouyang
- Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA.
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Abstract
Kidney function decreases with age and may soon limit millions of lives as the proportion of the population over 70 years of age increases. Glycogen synthase kinase 3β (GSK3β) is involved with metabolism and may have a role in kidney senescence, positioning it as a target for complications from chronic kidney disease. However, different studies suggest GSK3 has contrasting effects. In this issue of the JCI, Fang et al. explored the function of GSK3β and the interplay with lithium using human tissue and mouse models. Notably, GSK3β was overexpressed and activated in aging mice, and depleting GSK3β reduced senescence and glomerular aging. In this Commentary, we explore the similarities and differences between Fang et al. and previous findings by Hurcombe et al. These findings should prompt further study of lithium and other GSK3β inhibitors as a means of extending glomerular function in individuals with chronic kidney disease.
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Song Y, Zhai Y, Li L, Yang Z, Ge X, Yang Z, Zhang C, Li F, Ren M. BIN2 negatively regulates plant defence against Verticillium dahliae in Arabidopsis and cotton. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:2097-2112. [PMID: 34036698 PMCID: PMC8486250 DOI: 10.1111/pbi.13640] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/04/2021] [Accepted: 05/16/2021] [Indexed: 05/09/2023]
Abstract
Verticillium wilt is caused by the soil-borne vascular pathogen Verticillium dahliae, and affects a wide range of economically important crops, including upland cotton (Gossypium hirsutum). Previous studies showed that expression levels of BIN2 were significantly down-regulated during infestation with V. dahliae. However, the underlying molecular mechanism of BIN2 in plant regulation against V. dahliae remains enigmatic. Here, we characterized a protein kinase GhBIN2 from Gossypium hirsutum, and identified GhBIN2 as a negative regulator of resistance to V. dahliae. The Verticillium wilt resistance of Arabidopsis and cotton were significantly enhanced when BIN2 was knocked down. Constitutive expression of BIN2 attenuated plant resistance to V. dahliae. We found that BIN2 regulated plant endogenous JA content and influenced the expression of JA-responsive marker genes. Further analysis revealed that BIN2 interacted with and phosphorylated JAZ family proteins, key repressors of the JA signalling pathway in both Arabidopsis and cotton. Spectrometric analysis and site-directed mutagenesis showed that BIN2 phosphorylated AtJAZ1 at T196, resulting in the degradation of JAZ proteins. Collectively, these results show that BIN2 interacts with JAZ proteins and plays a negative role in plant resistance to V. dahliae. Thus, BIN2 may be a potential target gene for genetic engineering against Verticillium wilt in crops.
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Affiliation(s)
- Yun Song
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
- School of Life SciencesLiaocheng UniversityLiaochengChina
| | - Yaohua Zhai
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
| | - Linxuan Li
- Institute of Urban AgricultureChinese Academy of Agricultural SciencesChengduChina
| | - Zhaoen Yang
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Xiaoyang Ge
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Zuoren Yang
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Chaojun Zhang
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Fuguang Li
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Maozhi Ren
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
- Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
- Institute of Urban AgricultureChinese Academy of Agricultural SciencesChengduChina
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Yang M, He J, Wan S, Li W, Chen W, Wang Y, Jiang X, Cheng P, Chu P, Shen W, Guan R. Fine mapping of the BnaC04.BIL1 gene controlling plant height in Brassica napus L. BMC PLANT BIOLOGY 2021; 21:359. [PMID: 34353289 PMCID: PMC8340546 DOI: 10.1186/s12870-021-03137-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Plant height is an important architecture trait which is a fundamental yield-determining trait in crops. Variety with dwarf or semi-dwarf phenotype is a major objective in the breeding because dwarfing architecture can help to increase harvest index, increase planting density, enhance lodging resistance, and thus be suitable for mechanization harvest. Although some germplasm or genes associated with dwarfing plant type have been carried out. The molecular mechanisms underlying dwarfism in oilseed rape (Brassica napus L.) are poorly understood, restricting the progress of breeding dwarf varieties in this species. Here, we report a new dwarf mutant Bndwarf2 from our B. napus germplasm. We studied its inheritance and mapped the dwarf locus BnDWARF2. RESULTS The inheritance analysis showed that the dwarfism phenotype was controlled by one semi-dominant gene, which was mapped in an interval of 787.88 kb on the C04 chromosome of B. napus by Illumina Brassica 60 K Bead Chip Array. To fine-map BnDWARF2, 318 simple sequence repeat (SSR) primers were designed to uniformly cover the mapping interval. Among them, 15 polymorphic primers that narrowed down the BnDWARF2 locus to 34.62 kb were detected using a F2:3 family population with 889 individuals. Protein sequence analysis showed that only BnaC04.BIL1 (BnaC04g41660D) had two amino acid residues substitutions (Thr187Ser and Gln399His) between ZS11 and Bndwarf2, which encoding a GLYCOGEN SYNTHASE KINASE 3 (GSK3-like). The quantitative real-time PCR (qRT-PCR) analysis showed that the BnaC04.BIL1 gene expressed in all tissues of oilseed rape. Subcellular localization experiment showed that BnaC04.BIL1 was localized in the nucleus in tobacco leaf cells. Genetic transformation experiments confirmed that the BnaC04.BIL1 is responsible for the plant dwarf phenotype in the Bndwarf2 mutants. Overexpression of BnaC04.BIL1 reduced plant height, but also resulted in compact plant architecture. CONCLUSIONS A dominant dwarfing gene, BnaC04.BIL1, encodes an GSK3-like that negatively regulates plant height, was mapped and isolated. Our identification of a distinct gene locus may help to improve lodging resistance in oilseed rape.
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Affiliation(s)
- Mao Yang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jianbo He
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Shubei Wan
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Weiyan Li
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Wenjing Chen
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yangming Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Xiaomei Jiang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Pengfei Cheng
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu China
| | - Pu Chu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu China
| | - Rongzhan Guan
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095 China
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Jung S, Kim Y, Kim M, Seo M, Kim S, Kim S, Lee S. Exercise Pills for Drug Addiction: Forced Moderate Endurance Exercise Inhibits Methamphetamine-Induced Hyperactivity through the Striatal Glutamatergic Signaling Pathway in Male Sprague Dawley Rats. Int J Mol Sci 2021; 22:ijms22158203. [PMID: 34360969 PMCID: PMC8348279 DOI: 10.3390/ijms22158203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 01/22/2023] Open
Abstract
Physical exercise reduces the extent, duration, and frequency of drug use in drug addicts during the drug initiation phase, as well as during prolonged addiction, withdrawal, and recurrence. However, information about exercise-induced neurobiological changes is limited. This study aimed to investigate the effects of forced moderate endurance exercise training on methamphetamine (METH)-induced behavior and the associated neurobiological changes. Male Sprague Dawley rats were subjected to the administration of METH (1 mg/kg/day, i.p.) and/or forced moderate endurance exercise (treadmill running, 21 m/min, 60 min/day) for 2 weeks. Over the two weeks, endurance exercise training significantly reduced METH-induced hyperactivity. METH and/or exercise treatment increased striatal dopamine (DA) levels, decreased p(Thr308)-Akt expression, and increased p(Tyr216)-GSK-3β expression. However, the phosphorylation levels of Ser9-GSK-3β were significantly increased in the exercise group. METH administration significantly increased the expression of NMDAr1, CaMKK2, MAPKs, and PP1 in the striatum, and exercise treatment significantly decreased the expression of these molecules. Therefore, it is apparent that endurance exercise inhibited the METH-induced hyperactivity due to the decrease in GSK-3β activation by the regulation of the striatal glutamate signaling pathway.
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Affiliation(s)
| | | | | | | | | | | | - Sooyeun Lee
- Correspondence: ; Tel.: +82-53-580-6651; Fax: +82-53-580-5164
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Kafka A, Bukovac A, Brglez E, Jarmek AM, Poljak K, Brlek P, Žarković K, Njirić N, Pećina-Šlaus N. Methylation Patterns of DKK1, DKK3 and GSK3β Are Accompanied with Different Expression Levels in Human Astrocytoma. Cancers (Basel) 2021; 13:cancers13112530. [PMID: 34064046 PMCID: PMC8196684 DOI: 10.3390/cancers13112530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/17/2021] [Accepted: 05/19/2021] [Indexed: 01/24/2023] Open
Abstract
In the present study, we investigated genetic and epigenetic changes and protein expression levels of negative regulators of Wnt signaling, DKK1, DKK3, and APC as well as glycogen synthase kinase 3 (GSK3β) and β-catenin in 64 human astrocytomas of grades II-IV. Methylation-specific PCR revealed promoter methylation of DKK1, DKK3, and GSK3β in 38%, 43%, and 18% of samples, respectively. Grade IV comprised the lowest number of methylated GSK3β cases and highest of DKK3. Evaluation of the immunostaining using H-score was performed for β-catenin, both total and unphosphorylated (active) forms. Additionally, active (pY216) and inactive (pS9) forms of GSK3β protein were also analyzed. Spearman's correlation confirmed the prevalence of β-catenin's active form (rs = 0.634, p < 0.001) in astrocytoma tumor cells. The Wilcoxon test revealed that astrocytoma with higher levels of the active pGSK3β-Y216 form had lower expression levels of its inactive form (p < 0.0001, Z = -5.332). Changes in APC's exon 11 were observed in 44.44% of samples by PCR/RFLP. Astrocytomas with changes of APC had higher H-score values of total β-catenin compared to the group without genetic changes (t = -2.264, p = 0.038). Furthermore, a positive correlation between samples with methylated DKK3 promoter and the expression of active pGSK3β-Y216 (rs = 0.356, p = 0.011) was established. Our results emphasize the importance of methylation for the regulation of Wnt signaling. Large deletions of the APC gene associated with increased β-catenin levels, together with oncogenic effects of both β-catenin and GSK3β, are clearly involved in astrocytoma evolution. Our findings contribute to a better understanding of the etiology of gliomas. Further studies should elucidate the clinical and therapeutic relevance of the observed molecular alterations.
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Affiliation(s)
- Anja Kafka
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
- Department of Biology, School of Medicine, University of Zagreb, Šalata 3, 10 000 Zagreb, Croatia
- Correspondence:
| | - Anja Bukovac
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
- Department of Biology, School of Medicine, University of Zagreb, Šalata 3, 10 000 Zagreb, Croatia
| | - Emilija Brglez
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
| | - Ana-Marija Jarmek
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
| | - Karolina Poljak
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
| | - Petar Brlek
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
| | - Kamelija Žarković
- Department of Pathology, School of Medicine, University of Zagreb, Šalata 10, 10 000 Zagreb, Croatia;
- Division of Pathology, University Hospital Center “Zagreb”, Kišpatićeva 12, 10 000 Zagreb, Croatia
| | - Niko Njirić
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
- Department of Neurosurgery, University Hospital Center “Zagreb”, School of Medicine, University of Zagreb, Kišpatićeva 12, 10 000 Zagreb, Croatia
| | - Nives Pećina-Šlaus
- Laboratory of Neuro-Oncology, Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata 12, 10 000 Zagreb, Croatia; (A.B.); (E.B.); (A.-M.J.); (K.P.); (P.B.); (N.N.); (N.P.-Š.)
- Department of Biology, School of Medicine, University of Zagreb, Šalata 3, 10 000 Zagreb, Croatia
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Rudd CE, Chanthong K, Taylor A. Small Molecule Inhibition of GSK-3 Specifically Inhibits the Transcription of Inhibitory Co-receptor LAG-3 for Enhanced Anti-tumor Immunity. Cell Rep 2021; 30:2075-2082.e4. [PMID: 32075731 DOI: 10.1016/j.celrep.2020.01.076] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/06/2019] [Accepted: 01/22/2020] [Indexed: 11/29/2022] Open
Abstract
Immune checkpoint blockade using antibodies against negative co-receptors such as cytolytic T cell antigen-4 (CTLA-4) and programmed cell death-1 (PD-1) has seen much success treating cancer. However, most patients are still not cured, underscoring the need for improved treatments and the possible development of small molecule inhibitors (SMIs) for improved immunotherapy. We previously showed that glycogen synthase kinase (GSK)-3α/β is a central regulator of PD-1 expression, where GSK-3 inhibition down-regulates PD-1 and enhances CD8+ cytolytic T cell (CTL) function, reducing viral infections and tumor growth. Here, we demonstrate that GSK-3 also negatively regulates Lymphocyte Activation Gene-3 (LAG-3) expression on CD4+ and CD8+ T cells. GSK-3 SMIs are more effective than LAG-3 blockade alone in suppressing B16 melanoma growth, while their combination resulted in enhanced tumor clearance. This was linked to increased expression of the transcription factor, Tbet, which bound the LAG-3 promoter, inhibiting its transcription, and to increased granzyme B and interferon-γ1 expression. Overall, we describe a small molecule approach to inhibit LAG-3, resulting in enhanced anti-tumor immunity.
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Affiliation(s)
- Christopher E Rudd
- Cell Signalling Section, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK; Division of Immunology-Oncology Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC H1T 2M4, Canada; Département de Medicine, Université de Montréal, Montreal, QC H3C 3J7, Canada.
| | - Kittiphat Chanthong
- Cell Signalling Section, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK
| | - Alison Taylor
- Cell Signalling Section, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK; Leeds Institute of Medical Research, University of Leeds, School of Medicine, Wellcome Trust Brenner Building, St James's University Hospital, Leeds LS9 7TF, UK.
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9
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Glibo M, Serman A, Karin-Kujundzic V, Bekavac Vlatkovic I, Miskovic B, Vranic S, Serman L. The role of glycogen synthase kinase 3 (GSK3) in cancer with emphasis on ovarian cancer development and progression: A comprehensive review. Bosn J Basic Med Sci 2021; 21:5-18. [PMID: 32767962 PMCID: PMC7861620 DOI: 10.17305/bjbms.2020.5036] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 12/27/2022] Open
Abstract
Glycogen synthase kinase 3 (GSK3) is a monomeric serine-threonine kinase discovered in 1980 in a rat skeletal muscle. It has been involved in various cellular processes including embryogenesis, immune response, inflammation, apoptosis, autophagy, wound healing, neurodegeneration, and carcinogenesis. GSK3 exists in two different isoforms, GSK3α and GSK3β, both containing seven antiparallel beta-plates, a short linking part and an alpha helix, but coded by different genes and variously expressed in human tissues. In the current review, we comprehensively appraise the current literature on the role of GSK3 in various cancers with emphasis on ovarian carcinoma. Our findings indicate that the role of GSK3 in ovarian cancer development cannot be decisively determined as the currently available data support both prooncogenic and tumor-suppressive effects. Likewise, the clinical impact of GSK3 expression on ovarian cancer patients and its potential therapeutic implications are also limited. Further studies are needed to fully elucidate the pathophysiological and clinical implications of GSK3 activity in ovarian cancer.
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Affiliation(s)
- Mislav Glibo
- Department of Biology, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Alan Serman
- Centre of Excellence in Reproductive and Regenerative Medicine, University of Zagreb School of Medicine, Zagreb, Croatia; Department of Obstetrics and Gynecology, School of Medicine, University of Zagreb, Zagreb, Croatia; Clinic of Obstetrics and Gynecology, Clinical Hospital "Sveti Duh", Zagreb, Croatia
| | - Valentina Karin-Kujundzic
- Department of Biology, School of Medicine, University of Zagreb, Zagreb, Croatia; Centre of Excellence in Reproductive and Regenerative Medicine, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Ivanka Bekavac Vlatkovic
- Centre of Excellence in Reproductive and Regenerative Medicine, University of Zagreb School of Medicine, Zagreb, Croatia; Department of Obstetrics and Gynecology, School of Medicine, University of Zagreb, Zagreb, Croatia; Clinic of Obstetrics and Gynecology, Clinical Hospital "Sveti Duh", Zagreb, Croatia
| | - Berivoj Miskovic
- Centre of Excellence in Reproductive and Regenerative Medicine, University of Zagreb School of Medicine, Zagreb, Croatia; Department of Obstetrics and Gynecology, School of Medicine, University of Zagreb, Zagreb, Croatia; Clinic of Obstetrics and Gynecology, Clinical Hospital "Sveti Duh", Zagreb, Croatia
| | - Semir Vranic
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ljiljana Serman
- Department of Biology, School of Medicine, University of Zagreb, Zagreb, Croatia; Centre of Excellence in Reproductive and Regenerative Medicine, University of Zagreb School of Medicine, Zagreb, Croatia
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10
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Yoshitomi H, Lee KY, Yao K, Shin SH, Zhang T, Wang Q, Paul S, Roh E, Ryu J, Chen H, Aziz F, Chakraborty A, Bode AM, Dong Z. GSK3β-Mediated Expression of CUG-Translated WT1 Is Critical for Tumor Progression. Cancer Res 2020; 81:945-955. [PMID: 33184107 DOI: 10.1158/0008-5472.can-20-1880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/29/2020] [Accepted: 11/09/2020] [Indexed: 11/16/2022]
Abstract
The Wilms' tumor 1 (WT1) gene is well known as a chameleon gene. It plays a role as a tumor suppressor in Wilms' tumor but also acts as an oncogene in other cancers. Previously, our group reported that a canonical AUG starting site for the WT1 protein (augWT1) acts as a tumor suppressor, whereas a CUG starting site for the WT1 protein (cugWT1) functions as an oncogene. In this study, we report an oncogenic role of cugWT1 in the AOM/DSS-induced colon cancer mouse model and in a urethane-induced lung cancer model in mice lacking cugWT1. Development of chemically-induced tumors was significantly depressed in cugWT1-deficient mice. Moreover, glycogen synthase kinase 3β promoted phosphorylation of cugWT1 at S64, resulting in ubiquitination and degradation of the cugWT1 associated with the F-box-/- WD repeat-containing protein 8. Overall, our findings suggest that inhibition of cugWT1 expression provides a potential candidate target for therapy. SIGNIFICANCE: These findings demonstrate that CUG-translated WT1 plays an oncogenic role in vivo, and GSK3β-mediated phosphorylation of cugWT1 induces its ubiquitination and degradation in concert with FBXW8.
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Affiliation(s)
- Hisae Yoshitomi
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Kun Y Lee
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Ke Yao
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Seung Ho Shin
- The Hormel Institute, University of Minnesota, Austin, Minnesota.,Department of Food and Nutrition, Gyeongsang National University, Jinju, Republic of Korea.,Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Tianshun Zhang
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Qiushi Wang
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Souren Paul
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Eunmiri Roh
- The Hormel Institute, University of Minnesota, Austin, Minnesota.,Department of Cosmetic Science, Gwangju Women's University, Gwangju, Republic of Korea
| | - Joohyun Ryu
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Hanyong Chen
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Faisal Aziz
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | | | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Zigang Dong
- College of Medicine, Zhengzhou University, Henan, China.
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11
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Nezamoleslami S, Sheibani M, Mumtaz F, Esmaeili J, Shafaroodi H, Dehpour AR. Lithium reverses the effect of opioids on eNOS/nitric oxide pathway in human umbilical vein endothelial cells. Mol Biol Rep 2020; 47:6829-6840. [PMID: 32888132 DOI: 10.1007/s11033-020-05740-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/25/2020] [Indexed: 11/30/2022]
Abstract
The main challenge of pain management with opioids is development of acute and chronic analgesic tolerance. Several studies on neuronal cells have focused on the molecular mechanisms involved in tolerance such as cyclic AMP (cAMP) activation, and nitric oxide (NO) pathway. However, the effects of opioids on non-neuronal cells and tolerance development have been poorly investigated. Lithium chloride is a glycogen synthase kinase 3β (GSK-3β) inhibitor and exert its effects through modulation of nitric oxide pathway. In this study we examined the effect of lithium on acute/chronic morphine and methadone administration in endothelial cells which express mu opioid receptors. Human umbilical vein endothelial cells (HUVECs) were treated with different doses of morphine, methadone, and lithium for six and 48 h. Then we evaluated cell viability, nitrite and cyclic AMP levels, as well as the expression of endothelial nitric oxide synthase (eNOS) protein using Immunocytochemistry (ICC) assay and phosphorylated GSK-3β enzyme by western blot analysis in cells. Both chronic morphine and methadone treatment increased NO level and eNOS expression in HUVECs. Morphine induced cAMP overproduction after 48 h exposure with cells. Lithium pretreatment (10 mM) in both morphine and methadone received groups significantly reduced nitrite and cAMP levels as well as eNOS expression as compared to the control. The decreased amount of phospho GSK-3β due to the opioid exposure was increased following lithium treatment. Tolerance like pattern may occur in non-neuronal cells with opioid receptors and this study clearly revealed the attenuation of morphine and methadone tolerance like behavior by lithium treatment in HUVECs.
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Affiliation(s)
- Sadaf Nezamoleslami
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
| | - Mohammad Sheibani
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
| | - Faiza Mumtaz
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
| | - Jamileh Esmaeili
- Department of Biology, Islamic Azad University, P.O. Box 1477893855, Tehran, Iran
| | - Hamed Shafaroodi
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran.
| | - Ahmad Reza Dehpour
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran.
- Experimental Medicine Research Center, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran.
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12
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Lindner AU, Carberry S, Monsefi N, Barat A, Salvucci M, O'Byrne R, Zanella ER, Cremona M, Hennessy BT, Bertotti A, Trusolino L, Prehn JHM. Systems analysis of protein signatures predicting cetuximab responses in
KRAS
,
NRAS
,
BRAF
and
PIK3CA
wild‐type patient‐derived xenograft models of metastatic colorectal cancer. Int J Cancer 2020; 147:2891-2901. [DOI: 10.1002/ijc.33226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/22/2020] [Accepted: 07/03/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Andreas U. Lindner
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
| | - Steven Carberry
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
| | - Naser Monsefi
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
| | - Ana Barat
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
| | - Manuela Salvucci
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
| | - Robert O'Byrne
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
| | - Eugenia R. Zanella
- Translational Cancer Medicine, Surgical Oncology, and Clinical Trials Coordination Candiolo Cancer Institute Fondazione del Piemonte per l'Oncologia IRCCS Turin Italy
| | - Mattia Cremona
- Department of Medical Oncology Beaumont Hospital, Royal College of Surgeons in Ireland Dublin Ireland
| | - Bryan T. Hennessy
- Department of Medical Oncology Beaumont Hospital, Royal College of Surgeons in Ireland Dublin Ireland
| | - Andrea Bertotti
- Translational Cancer Medicine, Surgical Oncology, and Clinical Trials Coordination Candiolo Cancer Institute Fondazione del Piemonte per l'Oncologia IRCCS Turin Italy
- Department of Oncology University of Turin Medical School Turin Italy
| | - Livio Trusolino
- Translational Cancer Medicine, Surgical Oncology, and Clinical Trials Coordination Candiolo Cancer Institute Fondazione del Piemonte per l'Oncologia IRCCS Turin Italy
- Department of Oncology University of Turin Medical School Turin Italy
| | - Jochen H. M. Prehn
- Department of Physiology and Medical Physics and Centre Systems Medicine Royal College of Surgeons in Ireland Dublin Ireland
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13
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GSK-3-associated signaling is crucial to virus infection of cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118767. [PMID: 32522661 DOI: 10.1016/j.bbamcr.2020.118767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023]
Abstract
Signal transduction pathways play important roles in virus infection, replication, and associated pathogenesis. Some of the best understood cell signaling networks are crucial to virus infections such the mitogen-activated protein kinase (MAPK), phosphoinositide 3-kinase (PI3K), protein kinase C (PKC), and the WNT/β-catenin pathways. Glycogen synthase kinase-3 (GSK-3) is a lesser known signaling molecule in the field of virus research. Interestingly, GSK-3 forms the crux of multiple cell signaling pathways. However, recent studies indicate that GSK-3 may perform key roles in the response to viral infection, replication and pathogenesis. The effects of activated or inactivated forms of GSK-3 on virus infection are still not yet clearly understood phenomenon. The comprehension of the molecular mechanisms underlying the regulation of GSK-3-associated signaling pathways in terms of different stages of virus replication could be important not only to understand the pathogenesis of virus, but also possibly leading to new therapeutic targets. This review will focus on recent advances in understanding the roles of GSK-3 on viral replication, pathogenesis and the immune responses.
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14
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Barr JL, Unterwald EM. Glycogen synthase kinase-3 signaling in cellular and behavioral responses to psychostimulant drugs. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118746. [PMID: 32454064 DOI: 10.1016/j.bbamcr.2020.118746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 12/15/2022]
Abstract
Glycogen synthase kinase-3 (GSK-3) is a serine/threonine kinase implicated in numerous physiological processes and cellular functions through its ability to regulate the function of many proteins, including transcription factors and structural proteins. GSK-3β has been demonstrated to function as a regulator of multiple behavioral processes induced by drugs of abuse, particularly psychostimulant drugs. In this review, we provide an overview of the regulation of GSK-3β activity produced by psychostimulants, and the role of GSK-3β signaling in psychostimulant-induced behaviors including drug reward, associative learning and memory which play a role in the maintenance of drug-seeking. Evidence supports the conclusion that GSK-3β is an important component of the actions of psychostimulant drugs and that GSK-3β is a valid target for developing novel therapeutics. Additional studies are required to examine the role of GSK-3β in distinct cell types within the mesolimbic and memory circuits to further elucidate the mechanisms related to the acquisition, consolidation, and recall of drug-related memories, and potentially countering neuroadaptations that reinforce drug-seeking behaviors that maintain drug dependence.
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Affiliation(s)
- Jeffrey L Barr
- Center for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Ellen M Unterwald
- Center for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA; Department of Pharmacology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA.
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15
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Gao C, Ren C, Liu Z, Zhang L, Tang R, Li X. GAS5, a FoxO1-actived long noncoding RNA, promotes propofol-induced oral squamous cell carcinoma apoptosis by regulating the miR-1297-GSK3β axis. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 47:3985-3993. [PMID: 31583913 DOI: 10.1080/21691401.2019.1670189] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Propofol, an intravenous anaesthetic agent, has been found to exhibit antitumour effects in various kinds of cancer cells. However, the potential roles and regulatory mechanisms of propofol in oral squamous cell carcinoma (OSCC) remain unknown. Herein, we found that propofol inhibits OSCC cell growth and promotes cell apoptosis in a dose- and time-dependent manner. Further mechanistic studies revealed that the long noncoding RNA GAS5 is induced by propofol in OSCC cells. Elevated GAS5 acts as a competing endogenous RNA for miR-1297 and attenuates its inhibitory effect on GSK3β, leading to GSK3β increase and Mcl1 decrease. Additionally, we found that FoxO1 binds to the promoter of GAS5, facilitating its transcription in response to propofol treatment. Thus, these results suggest that propofol exhibits antitumour effects in OSCC cells and that the FoxO1-GAS5-miR-1297-GSK3β axis plays an important role in propofol-induced OSCC cell apoptosis.
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Affiliation(s)
- Chengshun Gao
- Department of Anesthesiology, the Second Affiliated Hospital & Department of Prosthodontics, College of Stomatology, Dalian Medical University , Dalian , Liaoning , China
| | - Chunmei Ren
- Department of Anesthesiology, the Second Affiliated Hospital & Department of Prosthodontics, College of Stomatology, Dalian Medical University , Dalian , Liaoning , China
| | - Zhongxi Liu
- Department of Anesthesiology, the Second Affiliated Hospital & Department of Prosthodontics, College of Stomatology, Dalian Medical University , Dalian , Liaoning , China.,Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
| | - Li Zhang
- Laboratory of Pathogenic Biology, College of Basic Medical Science, Dalian Medical University , Dalian , Liaoning , China
| | - Ranran Tang
- Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
| | - Xiaojie Li
- Department of Anesthesiology, the Second Affiliated Hospital & Department of Prosthodontics, College of Stomatology, Dalian Medical University , Dalian , Liaoning , China
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16
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Singh AP, Umbarkar P, Guo Y, Force T, Gupte M, Lal H. Inhibition of GSK-3 to induce cardiomyocyte proliferation: a recipe for in situ cardiac regeneration. Cardiovasc Res 2020; 115:20-30. [PMID: 30321309 DOI: 10.1093/cvr/cvy255] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 10/09/2018] [Indexed: 01/03/2023] Open
Abstract
With an estimated 38 million current patients, heart failure (HF) is a leading cause of morbidity and mortality worldwide. Although the aetiology differs, HF is largely a disease of cardiomyocyte (CM) death or dysfunction. Due to the famously limited amount of regenerative capacity of the myocardium, the only viable option for advanced HF patients is cardiac transplantation; however, donor's hearts are in very short supply. Thus, novel regenerative strategies are urgently needed to reconstitute the injured hearts. Emerging data from our lab and others have elucidated that CM-specific deletion of glycogen synthase kinase (GSK)-3 family of kinases induces CM proliferation, and the degree of proliferation is amplified in the setting of cardiac stress. If this proliferation is sufficiently robust, one could induce meaningful regeneration without the need for delivering exogenous cells to the injured myocardium (i.e. cardiac regeneration in situ). Herein, we will discuss the emerging role of the GSK-3s in CM proliferation and differentiation, including their potential implications in cardiac regeneration. The underlying molecular interactions and cross-talk among signalling pathways will be discussed. We will also review the specificity and limitations of the available small molecule inhibitors targeting GSK-3 and their potential applications to stimulate the endogenous cardiac regenerative responses to repair the injured heart.
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Affiliation(s)
- Anand Prakash Singh
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, 2220 Pierce Ave, Suite PRB#348A, Nashville, TN, USA
| | - Prachi Umbarkar
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, 2220 Pierce Ave, Suite PRB#348A, Nashville, TN, USA
| | - Yuanjun Guo
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, 2220 Pierce Ave, Suite PRB#348A, Nashville, TN, USA.,Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Thomas Force
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, 2220 Pierce Ave, Suite PRB#348A, Nashville, TN, USA
| | - Manisha Gupte
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, 2220 Pierce Ave, Suite PRB#348A, Nashville, TN, USA
| | - Hind Lal
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, 2220 Pierce Ave, Suite PRB#348A, Nashville, TN, USA
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17
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Song Y, Li P, Qin L, Xu Z, Jiang B, Ma C, Shao C, Gong Y. CUL4B negatively regulates Toll-like receptor-triggered proinflammatory responses by repressing Pten transcription. Cell Mol Immunol 2019; 18:339-349. [PMID: 31729464 DOI: 10.1038/s41423-019-0323-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 10/17/2019] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors (TLRs) play critical roles in innate immunity and inflammation. The molecular mechanisms by which TLR signaling is fine-tuned remain to be completely elucidated. Cullin 4B (CUL4B), which assembles the CUL4B-RING E3 ligase complex (CRL4B), has been shown to regulate diverse developmental and physiological processes by catalyzing monoubiquitination for histone modification or polyubiquitination for proteasomal degradation. Here, we identified the role of CUL4B as an intrinsic negative regulator of the TLR-triggered inflammatory response. Deletion of CUL4B in macrophages increased the production of proinflammatory cytokines and decreased anti-inflammatory cytokine IL-10 production in response to pathogens that activate TLR3, TLR4, or TLR2. Myeloid cell-specific Cul4b knockout mice were more susceptible to septic shock when challenged with lipopolysaccharide, polyinosinic-polycytidylic acid or Salmonella typhimurium infection. We further demonstrated that enhanced TLR-induced inflammatory responses in the absence of CUL4B were mediated by increased GSK3β activity. Suppression of GSK3β activity efficiently blocked the TLR-triggered increase in proinflammatory cytokine production and attenuated TLR-triggered death in Cul4b mutant mice. Mechanistically, CUL4B was found to negatively regulate TLR-triggered signaling by epigenetically repressing the transcription of Pten, thus maintaining the anti-inflammatory PI3K-AKT-GSK3β pathway. The upregulation of PTEN caused by CUL4B deletion led to uncontrolled GSK3β activity and excessive inflammatory immune responses. Thus, our findings indicate that CUL4B functions to restrict TLR-triggered inflammatory responses through regulating the AKT-GSK3β pathway.
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Affiliation(s)
- Yu Song
- Key Laboratory of Experimental Teratology, Ministry of Education, Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China
| | - Peishan Li
- Key Laboratory of Experimental Teratology, Ministry of Education, Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China
| | - Liping Qin
- Key Laboratory of Experimental Teratology, Ministry of Education, Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China
| | - Zhiliang Xu
- Key Laboratory of Experimental Teratology, Ministry of Education, Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China
| | - Baichun Jiang
- Key Laboratory of Experimental Teratology, Ministry of Education, Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China
| | - Chunhong Ma
- Key Laboratory of Experimental Teratology, Ministry of Education, Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong, China
| | - Changshun Shao
- State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, Suzhou, Jiangsu, China
| | - Yaoqin Gong
- Key Laboratory of Experimental Teratology, Ministry of Education, Institute of Molecular Medicine and Genetics, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China.
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18
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Razak S, Bibi N, Dar JA, Afsar T, Almajwal A, Parveen Z, Jahan S. Screening and computational analysis of colorectal associated non-synonymous polymorphism in CTNNB1 gene in Pakistani population. BMC MEDICAL GENETICS 2019; 20:171. [PMID: 31699039 PMCID: PMC6836551 DOI: 10.1186/s12881-019-0911-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 10/24/2019] [Indexed: 12/09/2022]
Abstract
Background Colorectal cancer (CRC) is categorized by alteration of vital pathways such as β-catenin (CTNNB1) mutations, WNT signaling activation, tumor protein 53 (TP53) inactivation, BRAF, Adenomatous polyposis coli (APC) inactivation, KRAS, dysregulation of epithelial to mesenchymal transition (EMT) genes, MYC amplification, etc. In the present study an attempt was made to screen CTNNB1 gene in colorectal cancer samples from Pakistani population and investigated the association of CTNNB1 gene mutations in the development of colorectal cancer. Methods 200 colorectal tumors approximately of male and female patients with sporadic or familial colorectal tumors and normal tissues were included. DNA was extracted and amplified through polymerase chain reaction (PCR) and subjected to exome sequence analysis. Immunohistochemistry was done to study protein expression. Molecular dynamic (MD) simulations of CTNNB1WT and mutant S33F and T41A were performed to evaluate the stability, folding, conformational changes and dynamic behaviors of CTNNB1 protein. Results Sequence analysis revealed two activating mutations (S33F and T41A) in exon 3 of CTNNB1 gene involving the transition of C.T and A.G at amino acid position 33 and 41 respectively (p.C33T and p.A41G). Immuno-histochemical staining showed the accumulation of β-catenin protein both in cytoplasm as well as in the nuclei of cancer cells when compared with normal tissue. Further molecular modeling, docking and simulation approaches revealed significant conformational changes in the N-terminus region of normal to mutant CTNNB1 gene critical for binding with Glycogen synthase kinase 3-B (GSK3) and transducin containing protein1 (TrCp1). Conclusion Present study on Pakistani population revealed an association of two non-synonymous polymorphisms in the CTNNB1 gene with colorectal cancer. These genetic variants led to the accumulation of the CTNNB1, a hallmark of tumor development. Also, analysis of structure to function alterations in CTNNB1 gene is crucial in understanding downstream biological events.
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Affiliation(s)
- Suhail Razak
- Reproductive physiology lab, Department of Animal Sciences Quaid-i-Azam University, Islamabad, Pakistan. .,Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
| | - Nousheen Bibi
- Department of Bioinformatics, Shaheed Benazir Bhutto Women University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Javid Ahmad Dar
- College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Zahida Parveen
- Faculty of Biological Sciences Quaid-I-Azam University Islamabad and University of Iceland, 101, Reykjavik, Iceland
| | - Sarwat Jahan
- Reproductive physiology lab, Department of Animal Sciences Quaid-i-Azam University, Islamabad, Pakistan
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19
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Waltero C, de Abreu LA, Alonso T, Nunes-da-Fonseca R, da Silva Vaz I, Logullo C. TOR as a Regulatory Target in Rhipicephalus microplus Embryogenesis. Front Physiol 2019; 10:965. [PMID: 31417424 PMCID: PMC6684781 DOI: 10.3389/fphys.2019.00965] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/11/2019] [Indexed: 12/11/2022] Open
Abstract
Embryogenesis is a metabolically intensive process carried out under tightly controlled conditions. The insulin signaling pathway regulates glucose homeostasis and is essential for reproduction in metazoan model species. Three key targets are part of this signaling pathway: protein kinase B (PKB, or AKT), glycogen synthase kinase 3 (GSK-3), and target of rapamycin (TOR). While the role of AKT and GSK-3 has been investigated during tick embryonic development, the role of TOR remains unknown. In this study, TOR and two other downstream effectors, namely S6 kinase (S6K) and eukaryotic translation initiation factor 4E-binding protein 1 (4E-BP1), were investigated in in vitro studies using the tick embryonic cell line BME26. First, we show that exogenous insulin can stimulate TOR transcription. Second, TOR chemical inhibition led to a decrease in BME26 cell viability, loss of membrane integrity, and downregulation of S6K and 4E-BP1 transcription. Conversely, treating BME26 cells with chemical inhibitors of AKT or GSK-3 did not affect S6K and 4E-BP1 transcription, showing that TOR is specifically required to activate its downstream targets. To address the role of TOR in tick reproduction, in vivo studies were performed. Analysis of relative transcription during different stages of tick embryonic development showed different levels of transcription for TOR, and a maternal deposition of S6K and 4E-BP1 transcripts. Injection of TOR double-stranded RNA (dsRNA) into partially fed females led to a slight delay in oviposition, an atypical egg external morphology, decreased vitellin content in eggs, and decreased larval hatching. Taken together, our data show that the TOR signaling pathway is important for tick reproduction, that TOR acts as a regulatory target in Rhipicephalus microplus embryogenesis and represents a promising target for the development of compounds for tick control.
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Affiliation(s)
- Camila Waltero
- Laboratório Integrado de Bioquímica Hatisaburo Masuda and Laboratório Integrado de Ciências Morfofuncionais, Instituto de Biodiversidade e Sustentabilidade NUPEM, Universidade Federal do Rio de Janeiro, Macaé, Brazil
| | - Leonardo Araujo de Abreu
- Laboratório Integrado de Bioquímica Hatisaburo Masuda and Laboratório Integrado de Ciências Morfofuncionais, Instituto de Biodiversidade e Sustentabilidade NUPEM, Universidade Federal do Rio de Janeiro, Macaé, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil
| | - Thayná Alonso
- Laboratório Integrado de Bioquímica Hatisaburo Masuda and Laboratório Integrado de Ciências Morfofuncionais, Instituto de Biodiversidade e Sustentabilidade NUPEM, Universidade Federal do Rio de Janeiro, Macaé, Brazil
| | - Rodrigo Nunes-da-Fonseca
- Laboratório Integrado de Bioquímica Hatisaburo Masuda and Laboratório Integrado de Ciências Morfofuncionais, Instituto de Biodiversidade e Sustentabilidade NUPEM, Universidade Federal do Rio de Janeiro, Macaé, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil
| | - Itabajara da Silva Vaz
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil.,Centro de Biotecnologia, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Carlos Logullo
- Laboratório Integrado de Bioquímica Hatisaburo Masuda and Laboratório Integrado de Ciências Morfofuncionais, Instituto de Biodiversidade e Sustentabilidade NUPEM, Universidade Federal do Rio de Janeiro, Macaé, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil
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20
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Wang X, Luo C, Mao XY, Li X, Yin JY, Zhang W, Zhou HH, Liu ZQ. Metformin reverses the schizophrenia-like behaviors induced by MK-801 in rats. Brain Res 2019; 1719:30-39. [PMID: 31121159 DOI: 10.1016/j.brainres.2019.05.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 05/16/2019] [Accepted: 05/19/2019] [Indexed: 12/11/2022]
Abstract
Schizophrenia is known to be a complex and disabling psychiatric disorder. Dopamine receptor antagonists have a significant therapeutic effect in improving the positive symptoms that are associated with the illness. Therefore, dopamine receptor antagonists are commonly used in the treatment of schizophrenia; however, they do not achieve satisfactory results in improving negative symptoms and cognitive impairment. Metformin, widely known as an antidiabetic drug, has been found to enhance spatial memory formation and improve anxiety-like behaviors in rodents. Metformin's neuroprotective effect has been well documented in several neurological disorders including Alzheimer's disease, Parkinson's disease, strokes, Huntington's disease, and seizures. In the present study, we used a rat model to explore the effect of metformin on schizophrenia-like behaviors induced by MK-801 (dizocilpine), an N-methyl-D-aspartate (NMDA) receptor antagonist. We found that the pre-pulse inhibition (PPI) deficit caused by MK-801 could be alleviated by metformin. The hyperlocomotion in the open field test induced by chronic treatment of MK-801 was reversed by administration of metformin. Metformin has no effect on the baseline level of anxiety in normal naive rats, while metformin could relieve the anxiety-like behaviors in MK-801-treatment rats, though this effect is not reaching a significant level. Additionally, metformin could significantly ameliorate working memory impairments induced by MK-801. Moreover, the increased level of phosphorylation of Akt and GSK3β in the frontal cortex induced by MK-801 was normalized by metformin. In conclusion, our results demonstrate that metformin improved schizophrenia-like symptoms in rats, and is therefore a potential agent for the treatment of schizophrenia.
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Affiliation(s)
- Xu Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China
| | - Chao Luo
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China; School of Life Sciences, Central South University, Changsha, Hunan 410078, PR China
| | - Xiao-Yuan Mao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China
| | - Xi Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China
| | - Ji-Ye Yin
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China
| | - Wei Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Hong-Hao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Zhao-Qian Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China.
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21
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Taylor A, Rudd CE. Commentary: Small Molecule Inhibition of PD-1 Transcription is an Effective Alternative to Antibody Blockade in Cancer Therapy. ACTA ACUST UNITED AC 2019; 3:9-12. [PMID: 31111120 PMCID: PMC6525092 DOI: 10.29245/2578-3009/2019/1.1167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alison Taylor
- Leeds Institute of Medical Research, University of Leeds, School of Medicine, Wellcome Trust Brenner Building, St James's University Hospital, LEEDS LS9 7TF, UK
| | - Christopher E Rudd
- Division of Immunology-Oncology Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada.,Département de Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
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22
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Aourz N, Serruys ASK, Chabwine JN, Balegamire PB, Afrikanova T, Edrada-Ebel R, Grey AI, Kamuhabwa AR, Walrave L, Esguerra CV, van Leuven F, de Witte PAM, Smolders I, Crawford AD. Identification of GSK-3 as a Potential Therapeutic Entry Point for Epilepsy. ACS Chem Neurosci 2019; 10:1992-2003. [PMID: 30351911 DOI: 10.1021/acschemneuro.8b00281] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In view of the clinical need for new antiseizure drugs (ASDs) with novel modes of action, we used a zebrafish seizure model to screen the anticonvulsant activity of medicinal plants used by traditional healers in the Congo for the treatment of epilepsy, and identified a crude plant extract that inhibited pentylenetetrazol (PTZ)-induced seizures in zebrafish larvae. Zebrafish bioassay-guided fractionation of this anticonvulsant Fabaceae species, Indigofera arrecta, identified indirubin, a compound with known inhibitory activity of glycogen synthase kinase (GSK)-3, as the bioactive component. Indirubin, as well as the more potent and selective GSK-3 inhibitor 6-bromoindirubin-3'-oxime (BIO-acetoxime) were tested in zebrafish and rodent seizure assays. Both compounds revealed anticonvulsant activity in PTZ-treated zebrafish larvae, with electroencephalographic recordings revealing reduction of epileptiform discharges. Both indirubin and BIO-acetoxime also showed anticonvulsant activity in the pilocarpine rat model for limbic seizures and in the 6-Hz refractory seizure mouse model. Most interestingly, BIO-acetoxime also exhibited anticonvulsant actions in 6-Hz fully kindled mice. Our findings thus provide the first evidence for anticonvulsant activity of GSK-3 inhibition, thereby implicating GSK-3 as a potential therapeutic entry point for epilepsy. Our results also support the use of zebrafish bioassay-guided fractionation of antiepileptic medicinal plant extracts as an effective strategy for the discovery of new ASDs with novel mechanisms of action.
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Affiliation(s)
- Najat Aourz
- Center for Neurosciences (C4N), Research Group Experimental Pharmacology (EFAR/FASC), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Ann-Sophie K. Serruys
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven 3000, Belgium
| | - Joëlle N. Chabwine
- Salama Neuroscience Center, Bukavu, South Kivu BP 54, Democratic Republic of the Congo
| | | | - Tatiana Afrikanova
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven 3000, Belgium
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, Scotland, U.K
| | - Alexander I. Grey
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, Scotland, U.K
| | - Appolinary R. Kamuhabwa
- Department of Pharmacognosy, Muhimbili University of Health & Allied Sciences, Dar es Salaam 11000, Tanzania
| | - Laura Walrave
- Center for Neurosciences (C4N), Research Group Experimental Pharmacology (EFAR/FASC), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Camila V. Esguerra
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven 3000, Belgium
| | - Fred van Leuven
- Experimental Genetics Group (LEGTEGG), Department of Human Genetics, University of Leuven, Leuven 3000, Belgium
| | - Peter A. M. de Witte
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven 3000, Belgium
| | - Ilse Smolders
- Center for Neurosciences (C4N), Research Group Experimental Pharmacology (EFAR/FASC), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Alexander D. Crawford
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven 3000, Belgium
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23
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Phosphorylation Regulates CAP1 (Cyclase-Associated Protein 1) Functions in the Motility and Invasion of Pancreatic Cancer Cells. Sci Rep 2019; 9:4925. [PMID: 30894654 PMCID: PMC6426867 DOI: 10.1038/s41598-019-41346-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 03/05/2019] [Indexed: 12/28/2022] Open
Abstract
Pancreatic cancer has the worst prognosis among major malignancies, largely due to its highly invasive property and difficulty in early detection. Mechanistic insights into cancerous transformation and especially metastatic progression are imperative for developing novel treatment strategies. The actin-regulating protein CAP1 is implicated in human cancers, while the role still remains elusive. In this study, we investigated roles for CAP1 and its phosphor-regulation in pancreatic cancer cells. No evidence supports remarkable up-regulation of CAP1 in the panel of cancer cell lines examined. However, knockdown of CAP1 in cancer cells led to enhanced stress fibers, reduced cell motility and invasion into Matrigel. Phosphorylation of CAP1 at the S308/S310 tandem regulatory site was elevated in cancer cells, consistent with hyper-activated GSK3 reported in pancreatic cancer. Inhibition of GSK3, a kinase for S310, reduced cell motility and invasion. Moreover, phosphor mutants had defects in alleviating actin stress fibers and rescuing the reduced invasiveness in the CAP1-knockdown PANC-1 cells. These results suggest a required role for transient phosphorylation for CAP1 function in controlling cancer cell invasiveness. Depletion of CAP1 also reduced FAK activity and cell adhesion, but did not cause significant alterations in ERK or cell proliferation. CAP1 likely regulates cancer cell invasiveness through effects on both actin filament turnover and cell adhesion. Finally, the growth factor PDGF induced CAP1 dephosphorylation, suggesting CAP1 may mediate extracellular signals to control cancer cell invasiveness. These findings may ultimately help develop strategies targeting CAP1 or its regulatory signals for controlling the invasive cycle of the disease.
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24
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Regulation of folate and methionine metabolism by multisite phosphorylation of human methylenetetrahydrofolate reductase. Sci Rep 2019; 9:4190. [PMID: 30862944 PMCID: PMC6414673 DOI: 10.1038/s41598-019-40950-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/18/2019] [Indexed: 12/14/2022] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) catalyzes the irreversible conversion of 5,10-methylene-tetrahydrofolate (THF) to 5-methyl-THF, thereby committing one-carbon units to the methionine cycle. While MTHFR has long been known to be allosterically inhibited by S-adenosylmethionine (SAM), only relatively recently has N-terminal multisite phosphorylation been shown to provide an additional layer of regulation. In vitro, the multiply phosphorylated form of MTHFR is more sensitive to allosteric inhibition by SAM. Here we sought to investigate the kinases responsible for MTHFR multisite phosphorylation and the physiological function of MTHFR phosphorylation in cells. We identified DYRK1A/2 and GSK3A/B among the kinases that phosphorylate MTHFR. In addition, we found that MTHFR phosphorylation is maintained by adequate cellular SAM levels, which are sensed through the C-terminal SAM binding domain of MTHFR. To understand the function of MTHFR phosphorylation in cells, we generated MTHFR CRISPR knockin mutant lines that effectively abolished MTHFR phosphorylation and compared them with the parental cell lines. Whereas the parental cell lines showed increased 5-methyl-THF production in response to homocysteine treatment, the knockin cell lines had high basal levels of 5-methyl-THF and did not respond to homocysteine treatment. Overall, our results suggest that MTHFR multisite phosphorylation coordinates with SAM binding to inhibit MTHFR activity in cells.
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25
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Schulz L, Pries R, Lanka AS, Drenckhan M, Rades D, Wollenberg B. Inhibition of GSK3α/β impairs the progression of HNSCC. Oncotarget 2018; 9:27630-27644. [PMID: 29963225 PMCID: PMC6021246 DOI: 10.18632/oncotarget.25250] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 04/06/2018] [Indexed: 12/19/2022] Open
Abstract
Background Head and neck squamous cell cancer (HNSCC) is one of the most common tumors worldwide and there is an enormous need for innovative therapy approaches. Several recent studies suggest tumor entity specific roles of glycogen synthase kinase 3 (GSK3) in different human cancers, acting as tumor suppressor or as tumor promoter. Here we describe the role of GSK3 with respect to different parameters within HNSCC progression. Methods Base line expression and activity profiles of p-GSK3α/β (Ser21/9) and p-GSK3α/β (Tyr279/216) were analyzed by immunohistochemistry and western blotting. Four different permanent HNSCC cell lines were exposed to the potent GSK3α/β inhibitor SB 216763. Cell viability was controlled via the MTT test. Cell migration was quantified with the Real Time Cell Analyzer (RCTA) xCELLigence. Regulation of the epithelial-mesenchymal transition (EMT) was measured with the Human Epithelial to Mesenchymal Transition (EMT) RT2 Profiler™ PCR Array and scratch assays. Taqman probes were used to detect the specific gene expression profiles of inflammatory cytokines Interleukin IL1β, IL6, IL8, IL10, TNFα and IFNβ. Results Exposure of permanent HNSCC cell lines to the specific GSK3α/β inhibitor SB 216763 leads to significant growth inhibition, inhibition of migration and decreased levels of active GSK3α/β in a dose dependent manner.Exposure of HNSCC lines to SB 216763 also resulted in a markable shift of EMT markers and functional EMT dysregulation. Functionally GSK3 differentially mediates the expression of TLR4- and TLR3-induced inflammatory cytokines in HNSCC, whereas no effect of SB 216763 on the NFkB activity was noticed. Conclusion GSK3α/β plays a crucial role in a variety of regulatory networks for HNSCC cancer progression as it drives proliferation or migration and thus GSK3 could serve as an interesting target for clinical drug development.
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Affiliation(s)
- Lisa Schulz
- Department of Otorhinolaryngology, University of Luebeck, Luebeck 23538, Germany
| | - Ralph Pries
- Department of Otorhinolaryngology, University of Luebeck, Luebeck 23538, Germany
| | - Aruna Sree Lanka
- Department of Otorhinolaryngology, University of Luebeck, Luebeck 23538, Germany
| | - Maren Drenckhan
- Department of Otorhinolaryngology, University of Luebeck, Luebeck 23538, Germany.,Department of Radiation Oncology, University of Luebeck, Luebeck 23538, Germany
| | - Dirk Rades
- Department of Radiation Oncology, University of Luebeck, Luebeck 23538, Germany
| | - Barbara Wollenberg
- Department of Otorhinolaryngology, University of Luebeck, Luebeck 23538, Germany
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26
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Sato A, Shibuya H. Glycogen synthase kinase 3ß functions as a positive effector in the WNK signaling pathway. PLoS One 2018; 13:e0193204. [PMID: 29494638 PMCID: PMC5832235 DOI: 10.1371/journal.pone.0193204] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 02/02/2018] [Indexed: 12/21/2022] Open
Abstract
The with no lysine (WNK) protein kinase family is conserved among many species. Some mutations in human WNK gene are associated with pseudohypoaldosteronism type II, a form of hypertension, and hereditary sensory and autonomic neuropathy type 2A. In kidney, WNK regulates the activity of STE20/SPS1-related, proline alanine-rich kinase and/or oxidative-stress responsive 1, which in turn regulate ion co-transporters. The misregulation of this pathway is involved in the pathogenesis of pseudohypoaldosteronism type II. In the neural system, WNK is involved in the specification of the cholinergic neuron, but the pathogenesis of hereditary sensory and autonomic neuropathy type 2A is still unknown. To better understand the WNK pathway, we isolated WNK-associated genes using Drosophila. We identified Glycogen synthase kinase 3ß (GSK3ß)/Shaggy (Sgg) as a candidate gene that was shown to interact with the WNK signaling pathway in both Drosophila and mammalian cells. Furthermore, GSK3ß was involved in neural specification downstream of WNK. These results suggest that GSK3ß/Sgg functions as a positive effector in the WNK signaling pathway.
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Affiliation(s)
- Atsushi Sato
- Department of Molecular Cell Biology and Joint Usage/Research Center for Intractable Diseases, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan
| | - Hiroshi Shibuya
- Department of Molecular Cell Biology and Joint Usage/Research Center for Intractable Diseases, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan
- * E-mail:
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27
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Brandstadter JD, Chen H, Jiang S, Huang X, Yang Y. IL-18-dependent NKG2D ligand upregulation on accessory cells is mediated by the PI3K/GSK-3 pathway. J Leukoc Biol 2017; 101:1317-1323. [PMID: 28283665 PMCID: PMC5433856 DOI: 10.1189/jlb.2a0816-342r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 02/12/2017] [Accepted: 02/22/2017] [Indexed: 11/24/2022] Open
Abstract
NK cells are critical for the control of viral infections. Studies have shown that efficient NK cell activation in response to infection with VV in vivo requires multiple pathways, including the NKG2D pathway. We have recently shown that IL-18 is necessary for the activation of NK cells through upregulation of the NKG2D ligand Rae-1 on DCs upon VV infection. However, how IL-18R signaling on the accessory cells contributes to Rae-1 up-regulation remains to be defined. In this study, we found IL-18-mediated Rae-1 up-regulation in accessory cells, including macrophages and DCs, to be dependent on the MyD88-PI3K pathway. We further found that IL-18 signaling through PI3K led to inhibition of GSK-3, which we found to be a negative regulator of Rae-1. Finally, we demonstrated that in vivo inhibition of GSK-3 could restore Rae-1 up-regulation on IL18R-/- DCs and partially rescue NK-cell activation against VV, leading to improved viral control in IL-18R-/- mice. Our results showed that IL18-dependent Rae-1 up-regulation on accessory cells is mediated by the MyD88-PI3K-GSK3 pathway. These observations may provide important insights into the design of effective NK cell-based immunotherapies.
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Affiliation(s)
- Joshua D Brandstadter
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Huiyao Chen
- Department of Hematology, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China; and
| | - Songfu Jiang
- Department of Hematology, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China; and
| | - Xiaopei Huang
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA;
| | - Yiping Yang
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA;
- Department of Immunology, Duke University Medical Center, Durham, North Carolina, USA
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28
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Hammerich KH, Frolov A, Li R, Ittmann M, Ayala GE. Cellular interactions of the phosphorylated form of AKT in prostate cancer. Hum Pathol 2017; 63:98-109. [DOI: 10.1016/j.humpath.2017.02.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/25/2017] [Accepted: 02/23/2017] [Indexed: 11/15/2022]
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29
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The interaction of GSK3B and FXR1 genotypes may influence the mania and depression dimensions in mood disorders. J Affect Disord 2017; 213:172-177. [PMID: 28242499 DOI: 10.1016/j.jad.2017.02.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 02/15/2017] [Indexed: 11/24/2022]
Abstract
BACKGROUND Previous evidence in healthy subjects suggested that functional polymorphisms GSK3B rs12630592 and FXR1 rs496250 interact in regulating mood and emotional processing. We attempted to replicate this interaction primarily on manic and depressive dimensions in mood disorder patients, and secondarily on schizophrenia patients, diagnosis itself and age of onset. METHODS Symptom dimensions were derived from the Comprehensive Assessment of Symptoms and History 82 items rated lifetime in acute episodes and stabilized interepisode intervals in 384 patients from the Schizophrenia and Bipolar Disorder Eastern Quebec Kindred Study. Linear mixed effect models of symptom dimensions included rs12630592-rs496250 main and interaction fixed effects (obtained from TaqMan genotypes), and a polygenic random effect. The distribution of lifetime best-estimate DSM-IV diagnosis of 855 kindred members was studied versus genotype under a polytomous logistic model. RESULTS In mood disorder patients, the level of mania (in both acute and stabilized periods) and depression in stabilized periods was positively associated with GSK3B rs12630592 T only in FXR1 rs496250 A-allele carriers (Bonferroni-corrected interaction p=0.024, 0.052 and 0.017 respectively). The two polymorphisms explained 11% of mania variance and 5% of interepisode depression variance. The association was observed neither in schizophrenia patients nor with the psychotic dimension in mood disorder patients. Interaction with the diagnosis distribution (p=0.03) was driven by the decreasing prevalence of recurrent major depression with rs12630592 T also only in carriers of rs496250 A. LIMITATIONS Sample size was limited, but power was sufficient to detect the tested interaction effect in this replication sample. CONCLUSIONS We replicate in affective patients an interaction between the FXR1 rs496250 and GSK3B rs12630592 polymorphisms in regulating mood dimensions.
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30
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Pardo M, Cheng Y, Velmeshev D, Magistri M, Eldar-Finkelman H, Martinez A, Faghihi MA, Jope RS, Beurel E. Intranasal siRNA administration reveals IGF2 deficiency contributes to impaired cognition in Fragile X syndrome mice. JCI Insight 2017; 2:e91782. [PMID: 28352664 PMCID: PMC5358485 DOI: 10.1172/jci.insight.91782] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Molecular mechanisms underlying learning and memory remain imprecisely understood, and restorative interventions are lacking. We report that intranasal administration of siRNAs can be used to identify targets important in cognitive processes and to improve genetically impaired learning and memory. In mice modeling the intellectual deficiency of Fragile X syndrome, intranasally administered siRNA targeting glycogen synthase kinase-3β (GSK3β), histone deacetylase-1 (HDAC1), HDAC2, or HDAC3 diminished cognitive impairments. In WT mice, intranasally administered brain-derived neurotrophic factor (BDNF) siRNA or HDAC4 siRNA impaired learning and memory, which was partially due to reduced insulin-like growth factor-2 (IGF2) levels because the BDNF siRNA- or HDAC4 siRNA-induced cognitive impairments were ameliorated by intranasal IGF2 administration. In Fmr1-/- mice, hippocampal IGF2 was deficient, and learning and memory impairments were ameliorated by IGF2 intranasal administration. Therefore intranasal siRNA administration is an effective means to identify mechanisms regulating cognition and to modulate therapeutic targets.
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Affiliation(s)
- Marta Pardo
- Department of Psychiatry and Behavioral Sciences.,Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Yuyan Cheng
- Department of Psychiatry and Behavioral Sciences.,Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | | | | | - Hagit Eldar-Finkelman
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ana Martinez
- Centro de Investigaciones Biologicas-CSIC, Madrid, Spain
| | | | - Richard S Jope
- Department of Psychiatry and Behavioral Sciences.,Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Eleonore Beurel
- Department of Psychiatry and Behavioral Sciences.,Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, Florida, USA
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31
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Meunier CNJ, Chameau P, Fossier PM. Modulation of Synaptic Plasticity in the Cortex Needs to Understand All the Players. Front Synaptic Neurosci 2017; 9:2. [PMID: 28203201 PMCID: PMC5285384 DOI: 10.3389/fnsyn.2017.00002] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 01/13/2017] [Indexed: 12/19/2022] Open
Abstract
The prefrontal cortex (PFC) is involved in cognitive tasks such as working memory, decision making, risk assessment and regulation of attention. These functions performed by the PFC are supposed to rely on rhythmic electrical activity generated by neuronal network oscillations determined by a precise balance between excitation and inhibition balance (E/I balance) resulting from the coordinated activities of recurrent excitation and feedback and feedforward inhibition. Functional alterations in PFC functions have been associated with cognitive deficits in several pathologies such as major depression, anxiety and schizophrenia. These pathological situations are correlated with alterations of different neurotransmitter systems (i.e., serotonin (5-HT), dopamine (DA), acetylcholine…) that result in alterations of the E/I balance. The aim of this review article is to cover the basic aspects of the regulation of the E/I balance as well as to highlight the importance of the complementarity role of several neurotransmitters in the modulation of the plasticity of excitatory and inhibitory synapses. We illustrate our purpose by recent findings that demonstrate that 5-HT and DA cooperate to regulate the plasticity of excitatory and inhibitory synapses targeting layer 5 pyramidal neurons (L5PyNs) of the PFC and to fine tune the E/I balance. Using a method based on the decomposition of the synaptic conductance into its excitatory and inhibitory components, we show that concomitant activation of D1-like receptors (D1Rs) and 5-HT1ARs, through a modulation of NMDA receptors, favors long term potentiation (LTP) of both excitation and inhibition and consequently does not modify the E/I balance. We also demonstrate that activation of D2-receptors requires functional 5-HT1ARs to shift the E-I balance towards more inhibition and to favor long term depression (LTD) of excitatory synapses through the activation of glycogen synthase kinase 3β (GSK3β). This cooperation between different neurotransmitters is particularly relevant in view of pathological situations in which alterations of one neurotransmitter system will also have consequences on the regulation of synaptic efficacy by other neurotransmitters. This opens up new perspectives in the development of therapeutic strategies for the pharmacological treatment of neuronal disorders.
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Affiliation(s)
- Claire N J Meunier
- Institut de Neurosciences Paris-Saclay (NeuroPSI), UMR 91197 CNRS-Université Paris-Saclay Paris, France
| | - Pascal Chameau
- Swammerdam Institute for Life Sciences, Center for NeuroScience, University of Amsterdam Amsterdam, Netherlands
| | - Philippe M Fossier
- Institut de Neurosciences Paris-Saclay (NeuroPSI), UMR 91197 CNRS-Université Paris-Saclay Paris, France
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32
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Santha S, Davaakhuu G, Basu A, Ke R, Das S, Rana A, Rana B. Modulation of glycogen synthase kinase-3β following TRAIL combinatorial treatment in cancer cells. Oncotarget 2016; 7:66892-66905. [PMID: 27602497 PMCID: PMC5341845 DOI: 10.18632/oncotarget.11834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 08/29/2016] [Indexed: 12/12/2022] Open
Abstract
Glycogen Synthase Kinase-3β (GSK3β) is a serine/threonine kinase, known to regulate various cellular processes including proliferation, differentiation, survival, apoptosis as well as TRAIL-resistance. Thus pathways that can modulate GSK3β axis are important targets for cancer drug development. Our earlier studies have shown that combinatorial treatment with Troglitazone (TZD) and TRAIL can induce apoptosis in TRAIL-resistant cancer cells. The current studies were undertaken to investigate whether GSK3β pathway was modulated during this apoptosis. Our results indicated an increase in inhibitory GSK3βSer9 phosphorylation during apoptosis, mediated via AKT. At a later time, however, TZD alone and TRAIL-TZD combination produced a dramatic reduction of GSK3β expression, which was abolished by cycloheximide. Luciferase assays with GSK3β-luc promoter reporter showed that TZD can effectively antagonize GSK3β promoter activity. Since TZD is a ligand for transcription factor PPARγ and can activate AMPK, we determined their roles on antagonism of GSK3β. Knockdown of PPARγ was unable to restore GSK3β expression or antagonize GSK3βSer9 phosphorylation. Although pretreatment with Compound C (pharmacological inhibitor of AMPK) partially rescued GSK3β expression, knockdown of AMPKα1 or α2 alone or in combination were ineffective. These studies suggested a novel PPARγ-AMPK-independent mechanism of targeting GSK3β by TZD, elucidation of which might provide newer insights to improve our understanding of TRAIL-resistance.
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Affiliation(s)
- Sreevidya Santha
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Gantulga Davaakhuu
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Aninda Basu
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Rong Ke
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Subhasis Das
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Ajay Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA.,University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612, USA.,Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Basabi Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA.,University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612, USA.,Jesse Brown VA Medical Center, Chicago, IL 60612, USA
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Hierarchical phosphorylation of apical membrane antigen 1 is required for efficient red blood cell invasion by malaria parasites. Sci Rep 2016; 6:34479. [PMID: 27698395 PMCID: PMC5048298 DOI: 10.1038/srep34479] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 09/08/2016] [Indexed: 12/03/2022] Open
Abstract
Central to the pathogenesis of malaria is the proliferation of Plasmodium falciparum parasites within human erythrocytes. Parasites invade erythrocytes via a coordinated sequence of receptor-ligand interactions between the parasite and host cell. One key ligand, Apical Membrane Antigen 1 (AMA1), is a leading blood-stage vaccine and previous work indicates that phosphorylation of its cytoplasmic domain (CPD) is important to its function during invasion. Here we investigate the significance of each of the six available phospho-sites in the CPD. We confirm that the cyclic AMP/protein kinase A (PKA) signalling pathway elicits a phospho-priming step upon serine 610 (S610), which enables subsequent phosphorylation in vitro of a conserved, downstream threonine residue (T613) by glycogen synthase kinase 3 (GSK3). Both phosphorylation steps are required for AMA1 to function efficiently during invasion. This provides the first evidence that the functions of key invasion ligands of the malaria parasite are regulated by sequential phosphorylation steps.
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Lack of GSK3β activation and modulation of synaptic plasticity by dopamine in 5-HT1A-receptor KO mice. Neuropharmacology 2016; 113:124-136. [PMID: 27678414 DOI: 10.1016/j.neuropharm.2016.09.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 09/13/2016] [Accepted: 09/23/2016] [Indexed: 12/31/2022]
Abstract
Psychiatric disorders are associated with excitation-inhibition (E-I) balance impairment in the prefrontal cortex. However, how the E-I balance is regulated is poorly known. The E-I balance of neuronal networks is linked to the action of numerous neuromodulators such as dopamine and 5-HT. We investigated the role of D2-receptors in tuning the E-I balance in a mouse model of anxiety, the 5-HT1A-receptor KO mice. We focused on synaptic plasticity of excitation and inhibition on layer 5 pyramidal neurons. We show that D2-receptor activation decreases the excitation and favors HFS-induced LTD of excitatory synapses via the activation of GSK3β. This effect is absent in 5-HT1A-receptor KO mice. Our data show that the fine control of excitatory transmission by GSK3β requires recruitment of D2-receptors and depends on the presence of 5-HT1A-receptors. In psychiatric disorders in which the number of 5-HT1A-receptors decreased, therapies should reconsider how serotonin and dopamine receptors interact and control neuronal network activity.
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Pandey MK, DeGrado TR. Glycogen Synthase Kinase-3 (GSK-3)-Targeted Therapy and Imaging. Am J Cancer Res 2016; 6:571-93. [PMID: 26941849 PMCID: PMC4775866 DOI: 10.7150/thno.14334] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/27/2016] [Indexed: 12/11/2022] Open
Abstract
Glycogen synthase kinase-3 (GSK-3) is associated with various key biological processes, including glucose regulation, apoptosis, protein synthesis, cell signaling, cellular transport, gene transcription, proliferation, and intracellular communication. Accordingly, GSK-3 has been implicated in a wide variety of diseases and specifically targeted for both therapeutic and imaging applications by a large number of academic laboratories and pharmaceutical companies. Here, we review the structure, function, expression levels, and ligand-binding properties of GSK-3 and its connection to various diseases. A selected list of highly potent GSK-3 inhibitors, with IC50 <20 nM for adenosine triphosphate (ATP)-competitive inhibitors and IC50 <5 μM for non-ATP-competitive inhibitors, were analyzed for structure activity relationships. Furthermore, ubiquitous expression of GSK-3 and its possible impact on therapy and imaging are also highlighted. Finally, a rational perspective and possible route to selective and effective GSK-3 inhibitors is discussed.
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36
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Kou X, Li J, Bian J, Yang Y, Yang X, Fan J, Jia S, Chen N. Ampelopsin attenuates 6-OHDA-induced neurotoxicity by regulating GSK-3β/NRF2/ARE signalling. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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37
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Mobley CB, Fox CD, Thompson RM, Healy JC, Santucci V, Kephart WC, McCloskey AE, Kim M, Pascoe DD, Martin JS, Moon JR, Young KC, Roberts MD. Comparative effects of whey protein versus L-leucine on skeletal muscle protein synthesis and markers of ribosome biogenesis following resistance exercise. Amino Acids 2015; 48:733-750. [PMID: 26507545 DOI: 10.1007/s00726-015-2121-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 10/16/2015] [Indexed: 12/15/2022]
Abstract
We compared immediate post-exercise whey protein (WP, 500 mg) versus L-leucine (LEU, 54 mg) feedings on skeletal muscle protein synthesis (MPS) mechanisms and ribosome biogenesis markers 3 h following unilateral plantarflexor resistance exercise in male, Wistar rats (~250 g). Additionally, in vitro experiments were performed on differentiated C2C12 myotubes to compare nutrient (i.e., WP, LEU) and 'exercise-like' treatments (i.e., caffeine, hydrogen peroxide, and AICAR) on ribosome biogenesis markers. LEU and WP significantly increased phosphorylated-rpS6 (Ser235/236) in the exercised (EX) leg 2.4-fold (P < 0.01) and 2.7-fold (P < 0.001) compared to the non-EX leg, respectively, whereas vehicle-fed control (CTL) did not (+65 %, P > 0.05). Compared to the non-EX leg, MPS levels increased 32 % and 52 % in the EX leg of CTL (P < 0.01) and WP rats (P < 0.001), respectively, but not in LEU rats (+15 %, P > 0.05). Several genes associated with ribosome biogenesis robustly increased in the EX versus non-EX legs of all treatments; specifically, c-Myc mRNA, Nop56 mRNA, Bop1 mRNA, Ncl mRNA, Npm1 mRNA, Fb1 mRNA, and Xpo-5 mRNA. However, only LEU significantly increased 45S pre-rRNA levels in the EX leg (63 %, P < 0.001). In vitro findings confirmed that 'exercise-like' treatments similarly altered markers of ribosome biogenesis, but only LEU increased 47S pre-rRNA levels (P < 0.01). Collectively, our data suggests that resistance exercise, as well as 'exercise-like' signals in vitro, acutely increase the expression of genes associated with ribosome biogenesis independent of nutrient provision. Moreover, while EX with or without WP appears superior for enhancing translational efficiency (i.e., increasing MPS per unit of RNA), LEU administration (or co-administration) may further enhance ribosome biogenesis over prolonged periods with resistance exercise.
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Affiliation(s)
- C Brooks Mobley
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - Carlton D Fox
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - Richard M Thompson
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - James C Healy
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - Vincent Santucci
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - Wesley C Kephart
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - Anna E McCloskey
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA
| | - Mike Kim
- MusclePharm Sports Science Institute, Denver, CO, USA
| | - David D Pascoe
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA.,Department of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine-Auburn Campus, Auburn, AL, USA
| | - Jeffrey S Martin
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA.,Department of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine-Auburn Campus, Auburn, AL, USA
| | - Jordan R Moon
- MusclePharm Sports Science Institute, Denver, CO, USA
| | | | - Michael D Roberts
- Molecular and Applied Sciences Laboratory, School of Kinesiology, Auburn University, 301 Wire Road, Office 286, Auburn, AL, 36849, USA. .,Department of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine-Auburn Campus, Auburn, AL, USA.
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Systematic Analysis and Prediction of In Situ Cross Talk of O-GlcNAcylation and Phosphorylation. BIOMED RESEARCH INTERNATIONAL 2015; 2015:279823. [PMID: 26601103 PMCID: PMC4639640 DOI: 10.1155/2015/279823] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 10/01/2015] [Accepted: 10/04/2015] [Indexed: 01/17/2023]
Abstract
Reversible posttranslational modification (PTM) plays a very important role in biological process by changing properties of proteins. As many proteins are multiply modified by PTMs, cross talk of PTMs is becoming an intriguing topic and draws much attention. Currently, lots of evidences suggest that the PTMs work together to accomplish a specific biological function. However, both the general principles and underlying mechanism of PTM crosstalk are elusive. In this study, by using large-scale datasets we performed evolutionary conservation analysis, gene ontology enrichment, motif extraction of proteins with cross talk of O-GlcNAcylation and phosphorylation cooccurring on the same residue. We found that proteins with in situ O-GlcNAc/Phos cross talk were significantly enriched in some specific gene ontology terms and no obvious evolutionary pressure was observed. Moreover, 3 functional motifs associated with O-GlcNAc/Phos sites were extracted. We further used sequence features and GO features to predict O-GlcNAc/Phos cross talk sites based on phosphorylated sites and O-GlcNAcylated sites separately by the use of SVM model. The AUC of classifier based on phosphorylated sites is 0.896 and the other classifier based on GlcNAcylated sites is 0.843. Both classifiers achieved a relatively better performance compared with other existing methods.
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Chen W, Xu WH. Expression analysis of GSK-3β in diapause pupal brains in the cotton bollworm, Helicoverpa armigera. INSECT SCIENCE 2015; 22:597-605. [PMID: 25772018 DOI: 10.1111/1744-7917.12215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/15/2015] [Indexed: 06/04/2023]
Abstract
Diapause is an adaptive response to adverse environmental conditions, but the molecular mechanisms are unclear. Some signaling molecules have been identified in the regulation of diapause. GSK-3β is an important signaling protein involved in several signaling pathways. In this study, GSK-3β from the cotton bollworm, Helicoverpa armigera, was cloned using reverse transcription polymerase chain reaction and rapid amplification of complementary DNA (cDNA) ends techniques. Sequence analysis showed that the full-length cDNA was 1447 bp containing a 292 bp 5'-untranslated region (UTR), a 162 bp 3'-UTR and a 993 bp open reading frame (ORF). The deduced Har-GSK-3β protein has high identity to other known GSK-3β, as determined by Basic Local Alignment Search Tool analysis. Developmental expression of total GSK-3β and p-GSK-3β (Ser9) in diapause and non-diapause pupal brains was investigated by Western blotting. Results indicated that the activity of GSK-3β is down-regulated in diapause pupal brains, which is further confirmed by Western blotting after diapause break. These finding suggest that the down-regulation of Har-GSK-3β activity may be important for pupal diapause.
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Affiliation(s)
- Wei Chen
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University
| | - Wei-Hua Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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40
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Zubbair Malik M, Ali S, Alam MJ, Ishrat R, Brojen Singh RK. Dynamics of p53 and Wnt cross talk. Comput Biol Chem 2015; 59 Pt B:55-66. [PMID: 26375870 DOI: 10.1016/j.compbiolchem.2015.07.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 07/07/2015] [Accepted: 07/27/2015] [Indexed: 01/10/2023]
Abstract
We present the mechanism of interaction of Wnt network module, which is responsible for periodic somitogenesis, with p53 regulatory network, which is one of the main regulators of various cellular functions, and switching of various oscillating states by investigating p53-Wnt model. The variation in Nutlin concentration in p53 regulating network drives the Wnt network module to different states, stabilized, damped and sustain oscillation states, and even to cycle arrest. Similarly, the change in Axin2 concentration in Wnt could able to modulate the p53 dynamics at these states. We then solve the set of coupled ordinary differential equations of the model using quasi steady state approximation. We, further, demonstrate the change of p53 and GSK3 interaction rate, due to hypothetical catalytic reaction or external stimuli, can able to regulate the dynamics of the two network modules, and even can control their dynamics to protect the system from cycle arrest (apoptosis).
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Affiliation(s)
- Md Zubbair Malik
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India; School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Shahnawaz Ali
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India; School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Md Jahoor Alam
- College of Applied Medical Sciences, University of Hail, P.O. Box 2440, Hail, Kingdom of Saudi Arabia; School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Romana Ishrat
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - R K Brojen Singh
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
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Human placental extract exerts hair growth-promoting effects through the GSK-3β signaling pathway in human dermal papilla cells. Int J Mol Med 2015; 36:1088-96. [PMID: 26311045 DOI: 10.3892/ijmm.2015.2316] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 07/23/2015] [Indexed: 11/05/2022] Open
Abstract
Human placental extract (HPE) is widely used in Korea to relieve fatigue. However, its effects on human dermal papilla cells (hDPCs) remain unknown. In the present study, in an effort to develop novel therapies to promote hair growth, we screened HPE. We demonstrate that HPE has hair growth‑promoting activities and induces β‑catenin expression through the inhibition of glycogen synthase kinase‑3β (GSK‑3β) by phosphorylation in hDPCs. Treatment with HPE significantly increased the viability of the hDPCs in a concentration‑dependent manner, as shown by bromodeoxyuridine (BrdU) assay. HPE also significantly increased the alkaline phosphatase (ALP) expression levels. The increased β‑catenin levels and the inhibition of GSK‑3β (Ser9) by phosphorylation suggested that HPE promoted the hair-inductive capacity of hDPCs. We compared the effects of treatment with HPE alone and treatment with HPE in conjunction with minoxidil (MXD). We found that HPE plus MXD effectively inhibited GSK‑3β by phosphorylation (Ser9) in the hDPCs. Moreover, we demonstrated that HPE was effective in inducing root hair elongation in rat vibrissa hair follicles, and that treatment with HPE led to a delay in catagen progression. Overall, our findings suggest that HPE promotes hair growth and may thus provide the basis of a novel therapeutic strategy for the clinical treatment of hair loss.
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Hami J, Karimi R, Haghir H, Gholamin M, Sadr-Nabavi A. Diabetes in Pregnancy Adversely Affects the Expression of Glycogen Synthase Kinase-3β in the Hippocampus of Rat Neonates. J Mol Neurosci 2015; 57:273-81. [PMID: 26242887 DOI: 10.1007/s12031-015-0617-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 07/07/2015] [Indexed: 12/18/2022]
Abstract
Diabetes during pregnancy causes a wide range of neurodevelopmental and neurocognitive abnormalities in offspring. Glycogen synthase kinase-3 (GSK-3) is widely expressed during brain development and regulates multiple cellular processes, and its dysregulation is implicated in the pathogenesis of diverse neurodegenerative and psychological diseases. This study was designed to examine the effects of maternal diabetes on GSK-3β messenger RNA (mRNA) expression and phosphorylation in the developing rat hippocampus. Female rats were maintained diabetic from a week before pregnancy through parturition, and male offspring was killed immediately after birth. We found a significant bilateral upregulation of GSK-3β mRNA expression in the hippocampus of pups born to diabetic mothers at P0, compared to controls. Moreover, at the same time point, there was a marked bilateral increase in the phosphorylation level of GSK-3β in the diabetic group. Unlike phosphorylation levels, there was a significant upregulation in hippocampal GSK-3β mRNA expression in the insulin-treated group, when compared to controls. The present study revealed that diabetes during pregnancy strongly influences the regulation of GSK-3β in the right/left developing hippocampi. These dysregulations may be part of the cascade of events through which diabetes during pregnancy affects the newborn's hippocampal structure and function.
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Affiliation(s)
- Javad Hami
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Razieh Karimi
- Medical Genetics Research Center (MGRC), School of Medicine, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran.,Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences (MUMS), Azadi Square, Mashhad, Iran
| | - Hossein Haghir
- Medical Genetics Research Center (MGRC), School of Medicine, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran.,Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - Mehran Gholamin
- Division of Human Genetics, Immunology Research Center, Avicenna Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ariane Sadr-Nabavi
- Medical Genetics Research Center (MGRC), School of Medicine, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran. .,Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences (MUMS), Azadi Square, Mashhad, Iran. .,Molecular Medicine Research Department, Iranian Academic Centers for Education, Culture and Research (ACECR)-Khorasan Razavi Branch, Mashhad, Iran.
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PI3K mediated activation of GSK-3β reduces at-level primary afferent growth responses associated with excitotoxic spinal cord injury dysesthesias. Mol Pain 2015; 11:35. [PMID: 26093674 PMCID: PMC4475622 DOI: 10.1186/s12990-015-0041-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 06/11/2015] [Indexed: 02/08/2023] Open
Abstract
Background Neuropathic pain and sensory abnormalities are a debilitating secondary consequence of spinal cord injury (SCI). Maladaptive structural plasticity is gaining recognition for its role in contributing to the development of post SCI pain syndromes. We previously demonstrated that excitotoxic induced SCI dysesthesias are associated with enhanced dorsal root ganglia (DRG) neuronal outgrowth. Although glycogen synthase kinase-3β (GSK-3β) is a known intracellular regulator neuronal growth, the potential contribution to primary afferent growth responses following SCI are undefined. We hypothesized that SCI triggers inhibition of GSK-3β signaling resulting in enhanced DRG growth responses, and that PI3K mediated activation of GSK-3β can prevent this growth and the development of at-level pain syndromes. Results Excitotoxic SCI using intraspinal quisqualic acid (QUIS) resulted in inhibition of GSK-3β in the superficial spinal cord dorsal horn and adjacent DRG. Double immunofluorescent staining showed that GSK-3βP was expressed in DRG neurons, especially small nociceptive, CGRP and IB4-positive neurons. Intrathecal administration of a potent PI3-kinase inhibitor (LY294002), a known GSK-3β activator, significantly decreased GSK-3βP expression levels in the dorsal horn. QUIS injection resulted in early (3 days) and sustained (14 days) DRG neurite outgrowth of small and subsequently large fibers that was reduced with short term (3 days) administration of LY294002. Furthermore, LY294002 treatment initiated on the date of injury, prevented the development of overgrooming, a spontaneous at-level pain related dysesthesia. Conclusions QUIS induced SCI resulted in inhibition of GSK-3β in primary afferents and enhanced at-level DRG intrinsic growth (neurite elongation and initiation). Early PI3K mediated activation of GSK-3β attenuated QUIS-induced DRG neurite outgrowth and prevented the development of at-level dysesthesias.
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Rahmati M, Taherabadi SJ, Mehrabi M. Decreased Activity in Neuropathic Pain Form and Gene Expression of Cyclin-Dependent Kinase5 and Glycogen Synthase Kinase-3 Beta in Soleus Muscle of Wistar Male Rats. IRANIAN RED CRESCENT MEDICAL JOURNAL 2015; 17:e23324. [PMID: 26290750 PMCID: PMC4537785 DOI: 10.5812/ircmj.23324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 11/18/2014] [Accepted: 03/25/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND The relationship between decreased activity/neuropathic pain and gene expression alterations in soleus muscle has remained elusive. OBJECTIVES In this experimental study, we investigated the effects of decreased activity in neuropathic pain form on Cyclin-Dependent Kinase 5 (CDK5) and Glycogen Synthase Kinase-3 β (GSK-3β) gene expression in soleus muscle of rats. MATERIALS AND METHODS Twelve male Wistar rats were randomly divided into three groups: (1) tight ligation of the L5 spinal nerve (SNL: n = 4); (2) sham surgery (Sham: n = 4), and (3) control (C: n = 4). The threshold to produce a withdrawal response to a mechanical and thermal stimulus was measured using von Frey filaments and radiation heat apparatus, respectively. Following 4 weeks after surgery, the left soleus muscle was removed and mRNA levels were determined by real-time Polymerase Chain Reaction (PCR). RESULTS Compared to control animals, L5 ligated animals developed mechanical and heat hypersensitivity during total period of study. Soleus muscle weight as well as CDK5 mRNA levels (less than ~ 0.4 fold) was decreased and GSK-3β mRNA levels (up to ~ 7 folds) increased in L5 ligated animals. CONCLUSIONS These results showed enhanced muscle atrophy processes following peripheral nerve damage and might provide a useful approach to study underlying muscle mechanisms associated with clinical neuropathic pain syndromes.
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Affiliation(s)
- Masoud Rahmati
- Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran
- Corresponding Author: Masoud Rahmati, Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran. Tel: +98-9124525538, Fax: +98-6614215393, E-mail:
| | - Seyed Jalal Taherabadi
- Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran
| | - Mahmoud Mehrabi
- Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran
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Bhanot H, Reddy MM, Nonami A, Weisberg EL, Bonal D, Kirschmeier PT, Salgia S, Podar K, Galinsky I, Chowdary TK, Neuberg D, Tonon G, Stone RM, Asara J, Griffin JD, Sattler M. Pathological glycogenesis through glycogen synthase 1 and suppression of excessive AMP kinase activity in myeloid leukemia cells. Leukemia 2015; 29:1555-1563. [PMID: 25703587 PMCID: PMC4497855 DOI: 10.1038/leu.2015.46] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 11/17/2014] [Accepted: 12/18/2014] [Indexed: 12/20/2022]
Abstract
The rapid proliferation of myeloid leukemia cells is highly dependent on increased glucose metabolism. Through an unbiased metabolomics analysis of leukemia cells, we found that the glycogenic precursor UDP-D-glucose is pervasively upregulated, despite low glycogen levels. Targeting the rate-limiting glycogen synthase 1 (GYS1) not only decreased glycolytic flux but also increased activation of the glycogen-responsive AMPK (AMP kinase), leading to significant growth suppression. Further, genetic and pharmacological hyper-activation of AMPK was sufficient to induce the changes observed with GYS1 targeting. Cancer genomics data also indicate that elevated levels of the glycogenic enzymes GYS1/2 or GBE1 (glycogen branching enzyme 1) are associated with poor survival in AML. These results suggest a novel mechanism whereby leukemic cells sustain aberrant proliferation by suppressing excess AMPK activity through elevated glycogenic flux and provide a therapeutic entry point for targeting leukemia cell metabolism.
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Affiliation(s)
- Haymanti Bhanot
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Mamatha M Reddy
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Atsushi Nonami
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Ellen L Weisberg
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Dennis Bonal
- Center for Biomedical Imaging in Oncology (CBIO), Lurie Family Imaging Center (LFIC), Boston, MA, 02215, USA
| | - Paul T Kirschmeier
- Center for Biomedical Imaging in Oncology (CBIO), Lurie Family Imaging Center (LFIC), Boston, MA, 02215, USA
| | | | - Klaus Podar
- National Center for Tumor Diseases (NCT), Heidelberg, Germany.,University of Heidelberg, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Tirumala K Chowdary
- School of Biological Sciences, National Institute of Science Education & Research, Bhubaneswar, India
| | - Donna Neuberg
- Department of Biostatistics and Computational Biology Dana-Farber Cancer Institute, Boston, MA, 02215, USA
| | | | - Richard M Stone
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - John Asara
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA.,Division of Signal Transduction/Mass Spectrometry Core, Beth Israel Deaconess Medical Center, Boston, MA02215, USA
| | - James D Griffin
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Martin Sattler
- Department of Medical Oncology, Boston, MA, 02215, USA.,Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
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Beurel E, Grieco SF, Jope RS. Glycogen synthase kinase-3 (GSK3): regulation, actions, and diseases. Pharmacol Ther 2014; 148:114-31. [PMID: 25435019 DOI: 10.1016/j.pharmthera.2014.11.016] [Citation(s) in RCA: 1101] [Impact Index Per Article: 110.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 11/18/2014] [Indexed: 12/23/2022]
Abstract
Glycogen synthase kinase-3 (GSK3) may be the busiest kinase in most cells, with over 100 known substrates to deal with. How does GSK3 maintain control to selectively phosphorylate each substrate, and why was it evolutionarily favorable for GSK3 to assume such a large responsibility? GSK3 must be particularly adaptable for incorporating new substrates into its repertoire, and we discuss the distinct properties of GSK3 that may contribute to its capacity to fulfill its roles in multiple signaling pathways. The mechanisms regulating GSK3 (predominantly post-translational modifications, substrate priming, cellular trafficking, protein complexes) have been reviewed previously, so here we focus on newly identified complexities in these mechanisms, how each of these regulatory mechanism contributes to the ability of GSK3 to select which substrates to phosphorylate, and how these mechanisms may have contributed to its adaptability as new substrates evolved. The current understanding of the mechanisms regulating GSK3 is reviewed, as are emerging topics in the actions of GSK3, particularly its interactions with receptors and receptor-coupled signal transduction events, and differential actions and regulation of the two GSK3 isoforms, GSK3α and GSK3β. Another remarkable characteristic of GSK3 is its involvement in many prevalent disorders, including psychiatric and neurological diseases, inflammatory diseases, cancer, and others. We address the feasibility of targeting GSK3 therapeutically, and provide an update of its involvement in the etiology and treatment of several disorders.
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Affiliation(s)
- Eleonore Beurel
- Department of Psychiatry and Behavioral Sciences, Miller School of Medicine, University of Miami, Miami, FL 33136, United States; Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL 33136, United States
| | - Steven F Grieco
- Department of Psychiatry and Behavioral Sciences, Miller School of Medicine, University of Miami, Miami, FL 33136, United States; Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL 33136, United States
| | - Richard S Jope
- Department of Psychiatry and Behavioral Sciences, Miller School of Medicine, University of Miami, Miami, FL 33136, United States; Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL 33136, United States.
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Hu Y, Yu D. BRASSINOSTEROID INSENSITIVE2 interacts with ABSCISIC ACID INSENSITIVE5 to mediate the antagonism of brassinosteroids to abscisic acid during seed germination in Arabidopsis. THE PLANT CELL 2014; 26:4394-408. [PMID: 25415975 PMCID: PMC4277219 DOI: 10.1105/tpc.114.130849] [Citation(s) in RCA: 174] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Seed germination and postgerminative growth are regulated by a delicate hormonal balance. Abscisic acid (ABA) represses Arabidopsis thaliana seed germination and postgerminative growth, while brassinosteroids (BRs) antagonize ABA-mediated inhibition and promote these processes. However, the molecular mechanism underlying BR-repressed ABA signaling remains largely unknown. Here, we show that the Glycogen Synthase Kinase 3-like kinase BRASSINOSTEROID INSENSITIVE2 (BIN2), a critical repressor of BR signaling, positively regulates ABA responses during seed germination and postgerminative growth. Mechanistic investigation revealed that BIN2 physically interacts with ABSCISIC ACID INSENSITIVE5 (ABI5), a bZIP transcription factor. Further genetic analysis demonstrated that the ABA-hypersensitive phenotype of BIN2-overexpressing plants requires ABI5. BIN2 was found to phosphorylate and stabilize ABI5 in the presence of ABA, while application of epibrassinolide (the active form of BRs) inhibited the regulation of ABI5 by BIN2. Consistently, the ABA-induced accumulation of ABI5 was affected in BIN2-related mutants. Moreover, mutations of the BIN2 phosphorylation sites on ABI5 made the mutant protein respond to ABA improperly. Additionally, the expression of several ABI5 regulons was positively modulated by BIN2. These results provide evidence that BIN2 phosphorylates and stabilizes ABI5 to mediate ABA response during seed germination, while BRs repress the BIN2-ABI5 cascade to antagonize ABA-mediated inhibition.
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Affiliation(s)
- Yanru Hu
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Diqiu Yu
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
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48
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Inhibition of glycogen synthase kinase-3β attenuates acute kidney injury in sodium taurocholate‑induced severe acute pancreatitis in rats. Mol Med Rep 2014; 10:3185-92. [PMID: 25323773 DOI: 10.3892/mmr.2014.2650] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 06/11/2014] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to investigate the efficacy of 4‑benzyl‑2‑methyl‑1,2,4‑thiadiazolidine‑3,5‑dione (TDZD‑8), the selective inhibitor of glycogen synthase kinase‑3β (GSK‑3β), on the development of acute kidney injury in an experimental model of sodium taurocholate‑induced severe acute pancreatitis (SAP) in rats. The serum amylase, lipase, interleukin‑1β and interleukin‑6 levels, and the pancreatic pathological score were examined to determine the magnitude of pancreatitis injury. The serum creatinine and blood urea nitrogen levels, myeloperoxidase (MPO) activity and renal histological grading were measured to assess the magnitude of SAP‑induced acute kidney injury. The activation of nuclear factor‑κB (NF‑κB) was examined using an immunohistochemistry assay. The expression of GSK‑3β, phospho‑GSK‑3β (Ser9), tumour necrosis factor‑α (TNF‑α), intercellular adhesion molecule‑1 (ICAM‑1) and inducible nitric oxide synthase (iNOS) protein in the kidney was characterised using western blot analysis. TDZD‑8 attenuated (i) serum amylase, lipase and renal dysfunction; (ii) the serum concentrations of proinflammatory cytokines; (iii) pancreatic and renal pathological injury; (iv) renal MPO activity and (v) NF‑κB activation and TNF‑α, ICAM‑1 and iNOS protein expression in the kidney. The results obtained in the present study suggest that the inhibition of GSK‑3β attenuates renal disorders associated with SAP through the inhibition of NF‑κB activation and the downregulation of the expression of proinflammatory cytokines, TNF‑α, ICAM‑1 and iNOS in rats. Blocking GSK‑3β protein kinase activity may be a novel approach to the treatment of this inflammatory condition.
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49
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Zhou GL, Zhang H, Wu H, Ghai P, Field J. Phosphorylation of the cytoskeletal protein CAP1 controls its association with cofilin and actin. J Cell Sci 2014; 127:5052-65. [PMID: 25315833 DOI: 10.1242/jcs.156059] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Cell signaling can control the dynamic balance between filamentous and monomeric actin by modulating actin regulatory proteins. One family of actin regulating proteins that controls actin dynamics comprises cyclase-associated proteins 1 and 2 (CAP1 and 2, respectively). However, cell signals that regulate CAPs remained unknown. We mapped phosphorylation sites on mouse CAP1 and found S307 and S309 to be regulatory sites. We further identified glycogen synthase kinase 3 as a kinase phosphorylating S309. The phosphomimetic mutant S307D/S309D lost binding to its partner cofilin and, when expressed in cells, caused accumulation of actin stress fibers similar to that in cells with reduced CAP expression. In contrast, the non-phosphorylatable S307A/S309A mutant showed drastically increased cofilin binding and reduced binding to actin. These results suggest that the phosphorylation serves to facilitate release of cofilin for a subsequent cycle of actin filament severing. Moreover, our results suggest that S307 and S309 function in tandem; neither the alterations in binding cofilin and/or actin, nor the defects in rescuing the phenotype of the enlarged cell size in CAP1 knockdown cells was observed in point mutants of either S307 or S309. In summary, we identify a novel regulatory mechanism of CAP1 through phosphorylation.
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Affiliation(s)
- Guo-Lei Zhou
- Department of Biological Sciences, Arkansas State University, State University, AR 72467, USA Molecular Biosciences Program, Arkansas State University, State University, AR 72467, USA
| | - Haitao Zhang
- Department of Biological Sciences, Arkansas State University, State University, AR 72467, USA Molecular Biosciences Program, Arkansas State University, State University, AR 72467, USA
| | - Huhehasi Wu
- Department of Biological Sciences, Arkansas State University, State University, AR 72467, USA
| | - Pooja Ghai
- Department of Biological Sciences, Arkansas State University, State University, AR 72467, USA Molecular Biosciences Program, Arkansas State University, State University, AR 72467, USA
| | - Jeffrey Field
- Department of Pharmacology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
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50
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Agarwal D, Dange RB, Raizada MK, Francis J. Angiotensin II causes imbalance between pro- and anti-inflammatory cytokines by modulating GSK-3β in neuronal culture. Br J Pharmacol 2014; 169:860-74. [PMID: 23516971 DOI: 10.1111/bph.12177] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 01/10/2013] [Accepted: 02/11/2013] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND AND PURPOSE Emerging evidence indicates that the balance between pro-inflammatory cytokines (PICs) and anti-inflammatory cytokines (AICs) within the brain is an important determinant in the outcome of hypertension. However, the mechanism by which this dysregulation occurs is not known. We aimed to investigate whether AngII induces imbalance between PIC and AIC by modulating downstream transcription factors, NFκB and cyclic AMP response element-binding protein (CREB), and whether AngII-induced effects are mediated by glycogen synthase kinase-3β (GSK-3β). EXPERIMENTAL APPROACH CATH.a neurons were exposed to AngII (10 nM-1 μM) over a preset time course. In another set of experiments, GSK-3β was knock down by using lentivirus containing short hairpin RNA targeting GSK-3β (L-sh-GSK3β) before AngII exposure. Cell extracts were subjected to RT-PCR, immunoblot and immunoprecipitation. KEY RESULTS AngII caused time-dependent increase in PICs (TNF-α and IL-1β) and reduction in AIC (IL-10). AngII exposure caused reduced phosphorylated CREB(Ser-133) and increased p-NFκB(Ser-276) levels, leading to reduced CREB-CBP and increased NFκB-CBP binding. These results were accompanied by increased activation of GSK-3β, as indicated by increased p-GSK3(Tyr-216) to p-GSK3(Ser-9) ratio. In a subsequent study, pretreatment with L-sh-GSK3β attenuated AngII-induced alterations in PICs and IL-10 by augmenting CREB-CBP and attenuating NFκB-CBP binding. CONCLUSIONS AND IMPLICATIONS Collectively, these findings are the first to provide direct evidence that AngII-induced dysregulation in cytokines is mediated by GSK-3β-mediated alterations in downstream transcription factors in neuronal cells. Our data also reveal that AngII-induced effects could be alleviated by GSK-3β inhibition, suggesting GSK-3β as an important therapeutic target for hypertension that is characterized by increased PICs and NFκB activation.
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Affiliation(s)
- Deepmala Agarwal
- Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
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