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Luo M, Chen N, Han D, Hu B, Zuo H, Weng S, He J, Xu X. A Negative Regulatory Feedback Loop within the JAK-STAT Pathway Mediated by the Protein Tyrosine Phosphatase DUSP14 in Shrimp. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 213:63-74. [PMID: 38767414 DOI: 10.4049/jimmunol.2300871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 04/15/2024] [Indexed: 05/22/2024]
Abstract
The JAK-STAT pathway is a central communication node for various biological processes. Its activation is characterized by phosphorylation and nuclear translocation of the transcription factor STAT. The regulatory balance of JAK-STAT signaling is important for maintenance of immune homeostasis. Protein tyrosine phosphatases (PTPs) induce dephosphorylation of tyrosine residues in intracellular proteins and generally function as negative regulators in cell signaling. However, the roles of PTPs in JAK-STAT signaling, especially in invertebrates, remain largely unknown. Pacific white shrimp Penaeus vannamei is currently an important model for studying invertebrate immunity. This study identified a novel member of the dual-specificity phosphatase (DUSP) subclass of the PTP superfamily in P. vannamei, named PvDUSP14. By interacting with and dephosphorylating STAT, PvDUSP14 inhibits the excessive activation of the JAK-STAT pathway, and silencing of PvDUSP14 significantly enhances humoral and cellular immunity in shrimp. The promoter of PvDUSP14 contains a STAT-binding motif and can be directly activated by STAT, suggesting that PvDUSP14 is a regulatory target gene of the JAK-STAT pathway and mediates a negative feedback regulatory loop. This feedback loop plays a role in maintaining homeostasis of JAK-STAT signaling and is involved in antibacterial and antiviral immune responses in shrimp. Therefore, the current study revealed a novel inhibitory mechanism of JAK-STAT signaling, which is of significance for studying the regulatory mechanisms of immune homeostasis in invertebrates.
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Affiliation(s)
- Mengting Luo
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Nuo Chen
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Deyu Han
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Bangping Hu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Hongliang Zuo
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- China-ASEAN Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
| | - Shaoping Weng
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- China-ASEAN Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
| | - Jianguo He
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- China-ASEAN Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
| | - Xiaopeng Xu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Aquatic Economic Animals, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- China-ASEAN Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
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Freitas-Mesquita AL, Carvalho-Kelly LF, Majerowicz TSS, Meyer-Fernandes JR. Euglena gracilis: Biochemical properties of a membrane bound ecto-phosphatase activity modulated by fluoroaluminate complexes and different trophic conditions. Eur J Protistol 2023; 90:126010. [PMID: 37540916 DOI: 10.1016/j.ejop.2023.126010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/05/2023] [Accepted: 07/17/2023] [Indexed: 08/06/2023]
Abstract
The ecto-phosphatases belong to a group of enzymes closely associated with the cell surface that has its catalytic site facing the extracellular environment, where different phosphorylated substrates can be hydrolyzed. In the present work, we biochemically characterized the ecto-phosphatase activity of the freshwater microalgae Euglena gracilis, a model microorganism, ubiquitously distributed and resistant to several environmental stressors. The ecto-phosphatase activity is acidic, stimulated by copper and presents the following apparent kinetic parameters: Km = 2.52 ± 0.12 mM p-NPP and Vmax = 3.62 ± 0.06 nmol p-NP × h-1 × 106 cells. We observed that zinc, orthovanadate, molybdate, fluoride, and inorganic phosphate inhibit the ecto-phosphatase activity with different magnitudes. Fluoroaluminate complexes are also inhibitors of this ecto-phosphatase activity. They can be formed in the enzyme reaction conditions and are likely to occur in a natural environment where E. gracilis can be found. The ecto-phosphatase activity is constant through the culture growth phases and is negatively modulated after continuous subculturing in the dark when a shift from phototrophic to the heterotrophic metabolism is likely. The analysis of those biochemical parameters may contribute to understanding the role of E. gracilis ecto-phosphatase activity in natural environments.
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Affiliation(s)
- Anita Leocadio Freitas-Mesquita
- Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, 21941-590 Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Biologia Estrutural e Bioimagem, 21941-590 Rio de Janeiro, RJ, Brazil.
| | - Luiz Fernando Carvalho-Kelly
- Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, 21941-590 Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Biologia Estrutural e Bioimagem, 21941-590 Rio de Janeiro, RJ, Brazil
| | - Thaís Souza Silveira Majerowicz
- Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, 21941-590 Rio de Janeiro, RJ, Brazil; Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Rua Senador Furtado, 121. Maracanã, Rio de Janeiro, RJ 20270-021, Brazil
| | - José Roberto Meyer-Fernandes
- Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, 21941-590 Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Biologia Estrutural e Bioimagem, 21941-590 Rio de Janeiro, RJ, Brazil.
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Gul M, Navid A, Fakhar M, Rashid S. SHP-1 tyrosine phosphatase binding to c-Src kinase phosphor-dependent conformations: A comparative structural framework. PLoS One 2023; 18:e0278448. [PMID: 36638102 PMCID: PMC9838854 DOI: 10.1371/journal.pone.0278448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 11/16/2022] [Indexed: 01/14/2023] Open
Abstract
SHP-1 is a cytosolic tyrosine phosphatase that is primarily expressed in hematopoietic cells. It acts as a negative regulator of numerous signaling pathways and controls multiple cellular functions involved in cancer pathogenesis. This study describes the binding preferences of SHP-1 (pY536) to c-Srcopen (pY416) and c-Srcclose (pY527) through in silico approaches. Molecular dynamics simulation analysis revealed more conformational changes in c-Srcclose upon binding to SHP-1, as compared to its active/open conformation that is stabilized by the cooperative binding of the C-SH2 domain and C-terminal tail of SHP-1 to c-Src SH2 and KD. In contrast, c-Srcclose and SHP-1 interaction is mediated by PTP domain-specific WPD-loop (WPDXGXP) and Q-loop (QTXXQYXF) binding to c-Srcclose C-terminal tail residues. The dynamic correlation analysis demonstrated a positive correlation for SHP-1 PTP with KD, SH3, and the C-terminal tail of c-Srcclose. In the case of the c-Srcopen-SHP-1 complex, SH3 and SH2 domains of c-Srcopen were correlated to C-SH2 and the C-terminal tail of SHP-1. Our findings reveal that SHP1-dependent c-Src activation through dephosphorylation relies on the conformational shift in the inhibitory C-terminal tail that may ease the recruitment of the N-SH2 domain to phosphotyrosine residue, resulting in the relieving of the PTP domain. Collectively, this study delineates the intermolecular interaction paradigm and underlying conformational readjustments in SHP-1 due to binding with the c-Src active and inactive state. This study will largely help in devising novel therapeutic strategies for targeting cancer development.
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Affiliation(s)
- Mehreen Gul
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ahmad Navid
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Fakhar
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sajid Rashid
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
- * E-mail:
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Behl T, Gupta A, Sehgal A, Albarrati A, Albratty M, Meraya AM, Najmi A, Bhatia S, Bungau S. Exploring protein tyrosine phosphatases (PTP) and PTP-1B inhibitors in management of diabetes mellitus. Biomed Pharmacother 2022; 153:113405. [DOI: 10.1016/j.biopha.2022.113405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/02/2022] Open
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Luo M, Xu X, Liu X, Shen W, Yang L, Zhu Z, Weng S, He J, Zuo H. The Non-Receptor Protein Tyrosine Phosphatase PTPN6 Mediates a Positive Regulatory Approach From the Interferon Regulatory Factor to the JAK/STAT Pathway in Litopenaeus vannamei. Front Immunol 2022; 13:913955. [PMID: 35844582 PMCID: PMC9276969 DOI: 10.3389/fimmu.2022.913955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/25/2022] [Indexed: 11/25/2022] Open
Abstract
SH2-domain-containing protein tyrosine phosphatases (PTPs), belonging to the class I PTP superfamily, are responsible for the dephosphorylation on the phosphorylated tyrosine residues in some proteins that are involved in multiple biological processes in eukaryotes. The Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway transduce signaling responding to interferons and initiate cellular antiviral responses. The activity of the JAK/STAT pathway is generally orchestrated by the de-/phosphorylation of the tyrosine and serine residues of JAKs and STATs, in which the dephosphorylation processes are mainly controlled by PTPs. In the present study, an SH2-domian-contianing PTP, temporally named as LvPTPN6, was identified in Litopenaeus vannamei. LvPTPN6 shares high similarity with PTPN6s from other organisms and was phylogenetically categorized into the clade of arthropods that differs from those of fishes and mammals. LvPTPN6 was constitutively expressed in all detected tissues, located mainly in the cytoplasm, and differentially induced in hemocyte and gill after the challenge of stimulants, indicating its complicated regulatory roles in shrimp immune responses. Intriguingly, the expression of LvPTPN6 was regulated by interferon regulatory factor (IRF), which could directly bind to the LvPTPN6 promoter. Surprisingly, unlike other PTPN6s, LvPTPN6 could promote the dimerization of STAT and facilitate its nuclear localization, which further elevated the expression of STAT-targeting immune effector genes and enhanced the antiviral immunity of shrimp. Therefore, this study suggests a PTPN6-mediated regulatory approach from IRF to the JAK/STAT signaling pathway in shrimp, which provides new insights into the regulatory roles of PTPs in the JAK/STAT signaling pathway and contributes to the further understanding of the mechanisms of antiviral immunity in invertebrates.
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Affiliation(s)
- Mengting Luo
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiaopeng Xu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
- China-Association of Southeast Asian Nations (ASEAN) Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
| | - Xinxin Liu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wenjie Shen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Linwei Yang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
- China-Association of Southeast Asian Nations (ASEAN) Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
| | - Zhiming Zhu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
| | - Shaoping Weng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
- China-Association of Southeast Asian Nations (ASEAN) Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
| | - Jianguo He
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
- China-Association of Southeast Asian Nations (ASEAN) Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Hongliang Zuo, ; Jianguo He,
| | - Hongliang Zuo
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
- China-Association of Southeast Asian Nations (ASEAN) Belt and Road Joint Laboratory on Marine Aquaculture Technology, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Hongliang Zuo, ; Jianguo He,
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Arends D, Kärst S, Heise S, Korkuc P, Hesse D, Brockmann GA. Transmission distortion and genetic incompatibilities between alleles in a multigenerational mouse advanced intercross line. Genetics 2021; 220:6428544. [PMID: 34791189 PMCID: PMC8733443 DOI: 10.1093/genetics/iyab192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 10/15/2021] [Indexed: 11/23/2022] Open
Abstract
While direct additive and dominance effects on complex traits have been mapped repeatedly, additional genetic factors contributing to the heterogeneity of complex traits have been scarcely investigated. To assess genetic background effects, we investigated transmission ratio distortions (TRDs) of alleles from parent to offspring using an advanced intercross line (AIL) of an initial cross between the mouse inbred strains C57BL/6NCrl (B6N) and BFMI860-12 [Berlin Fat Mouse Inbred (BFMI)]. A total of 341 males of generation 28 and their respective 61 parents and 66 grandparents were genotyped using Mega Mouse Universal Genotyping Arrays. TRDs were investigated using allele transmission asymmetry tests, and pathway overrepresentation analysis was performed. Sequencing data were used to test for overrepresentation of nonsynonymous SNPs (nsSNPs) in TRD regions. Genetic incompatibilities were tested using the Bateson–Dobzhansky–Muller two-locus model. A total of 62 TRD regions were detected, many in close proximity to the telocentric centromere. TRD regions contained 44.5% more nsSNPs than randomly selected regions (182 vs 125.9 ± 17.0, P < 1 × 10−4). Testing for genetic incompatibilities between TRD regions identified 29 genome-wide significant incompatibilities between TRD regions [P(BF) < 0.05]. Pathway overrepresentation analysis of genes in TRD regions showed that DNA methylation, epigenetic regulation of RNA, and meiotic/meiosis regulation pathways were affected independent of the parental origin of the TRD. Paternal BFMI TRD regions showed overrepresentation in the small interfering RNA biogenesis and in the metabolism of lipids and lipoproteins. Maternal B6N TRD regions harbored genes involved in meiotic recombination, cell death, and apoptosis pathways. The analysis of genes in TRD regions suggests the potential distortion of protein–protein interactions influencing obesity and diabetic retinopathy as a result of disadvantageous combinations of allelic variants in Aass, Pgx6, and Nme8. Using an AIL significantly improves the resolution at which we can investigate TRD. Our analysis implicates distortion of protein–protein interactions as well as meiotic drive as the underlying mechanisms leading to the observed TRD in our AIL. Furthermore, genes with large amounts of nsSNPs located in TRD regions are more likely to be involved in pathways that are related to the phenotypic differences between the parental strains. Genes in these TRD regions provide new targets for investigating genetic adaptation, protein–protein interactions, and determinants of complex traits such as obesity.
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Affiliation(s)
- Danny Arends
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften, Humboldt-Universität zu Berlin, Invalidenstraße 42, D-10115 Berlin, Germany
| | - Stefan Kärst
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften, Humboldt-Universität zu Berlin, Invalidenstraße 42, D-10115 Berlin, Germany
| | - Sebastian Heise
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften, Humboldt-Universität zu Berlin, Invalidenstraße 42, D-10115 Berlin, Germany
| | - Paula Korkuc
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften, Humboldt-Universität zu Berlin, Invalidenstraße 42, D-10115 Berlin, Germany
| | - Deike Hesse
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften, Humboldt-Universität zu Berlin, Invalidenstraße 42, D-10115 Berlin, Germany
| | - Gudrun A Brockmann
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften, Humboldt-Universität zu Berlin, Invalidenstraße 42, D-10115 Berlin, Germany
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Udrea AM, Gradisteanu Pircalabioru G, Boboc AA, Mares C, Dinache A, Mernea M, Avram S. Advanced Bioinformatics Tools in the Pharmacokinetic Profiles of Natural and Synthetic Compounds with Anti-Diabetic Activity. Biomolecules 2021; 11:1692. [PMID: 34827690 PMCID: PMC8615418 DOI: 10.3390/biom11111692] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetes represents a major health problem, involving a severe imbalance of blood sugar levels, which can disturb the nerves, eyes, kidneys, and other organs. Diabes management involves several synthetic drugs focused on improving insulin sensitivity, increasing insulin production, and decreasing blood glucose levels, but with unclear molecular mechanisms and severe side effects. Natural chemicals extracted from several plants such as Gymnema sylvestre, Momordica charantia or Ophiopogon planiscapus Niger have aroused great interest for their anti-diabetes activity, but also their hypolipidemic and anti-obesity activity. Here, we focused on the anti-diabetic activity of a few natural and synthetic compounds, in correlation with their pharmacokinetic/pharmacodynamic profiles, especially with their blood-brain barrier (BBB) permeability. We reviewed studies that used bioinformatics methods such as predicted BBB, molecular docking, molecular dynamics and quantitative structure-activity relationship (QSAR) to elucidate the proper action mechanisms of antidiabetic compounds. Currently, it is evident that BBB damage plays a significant role in diabetes disorders, but the molecular mechanisms are not clear. Here, we presented the efficacy of natural (gymnemic acids, quercetin, resveratrol) and synthetic (TAK-242, propofol, or APX3330) compounds in reducing diabetes symptoms and improving BBB dysfunctions. Bioinformatics tools can be helpful in the quest for chemical compounds with effective anti-diabetic activity that can enhance the druggability of molecular targets and provide a deeper understanding of diabetes mechanisms.
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Affiliation(s)
- Ana Maria Udrea
- Laser Department, National Institute for Laser, Plasma and Radiation Physics, 077125 Maurele, Romania; (A.M.U.); (A.D.)
- Earth, Environmental and Life Sciences Section, Research Institute of the University of Bucharest, University of Bucharest, 1 B. P. Hașdeu St., 50567 Bucharest, Romania;
| | - Gratiela Gradisteanu Pircalabioru
- Earth, Environmental and Life Sciences Section, Research Institute of the University of Bucharest, University of Bucharest, 1 B. P. Hașdeu St., 50567 Bucharest, Romania;
| | - Anca Andreea Boboc
- “Maria Sklodowska Curie” Emergency Children’s Hospital, 20, Constantin Brancoveanu Bd., 077120 Bucharest, Romania;
- Department of Pediatrics 8, “Carol Davila” University of Medicine and Pharmacy, Eroii Sanitari Bd., 020021 Bucharest, Romania
| | - Catalina Mares
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (C.M.); (S.A.)
| | - Andra Dinache
- Laser Department, National Institute for Laser, Plasma and Radiation Physics, 077125 Maurele, Romania; (A.M.U.); (A.D.)
| | - Maria Mernea
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (C.M.); (S.A.)
| | - Speranta Avram
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (C.M.); (S.A.)
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The Impact of PTPRK and ROS1 Polymorphisms on the Preeclampsia Risk in Han Chinese Women. Int J Hypertens 2021; 2021:3275081. [PMID: 34646579 PMCID: PMC8505056 DOI: 10.1155/2021/3275081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/15/2021] [Indexed: 01/18/2023] Open
Abstract
Objective Preeclampsia (PE) is a severe complication in pregnancy and a leading cause of maternal and infant mortality. However, the exact underlying etiology of PE remains unknown. Emerging evidence indicates that the cause of PE is associated with genetic factors. Therefore, the aim of this study is to identify susceptibility genes to PE. Materials and Methods Human Exome BeadChip assays were conducted using 370 cases and 482 controls and 21 loci were discovered. A further independent set of 958 cases and 1007 controls were recruited for genotyping to determine whether the genes of interest ROS1 and PTPRK are associated with PE. Immunohistochemistry was used for localization. Both qPCR and Western blotting were utilized to investigate the levels of PTPRK in placentas of 20 PE and 20 normal pregnancies. Results The allele frequency of PTPRK rs3190930 differed significantly between PE and controls and was particularly significant in severe PE subgroup and early-onset PE subgroup. PTPRK is primarily localized in placental trophoblast cells. The mRNA and protein levels of PTPRK in PE were significantly higher than those in controls. Conclusion These results suggest that PTPRK appears to be a previously unrecognized susceptibility gene for PE in Han Chinese women, and its expression is also associated with PE, while ROS1 rs9489124 has no apparent correlation with PE risk.
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The dual inhibition against the activity and expression of tyrosine phosphatase PRL-3 from a rhodanine derivative. Bioorg Med Chem Lett 2021; 41:127981. [PMID: 33766767 DOI: 10.1016/j.bmcl.2021.127981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/12/2021] [Accepted: 03/14/2021] [Indexed: 11/22/2022]
Abstract
Increasing evidences demonstrated that PRL-3 was associated with metastatic potential in a variety of cancers including CRC, gastric cancer, ovarian cancer and so on. PRL-3 knock down inhibited the development of metastasis by reducing the size of primary tumors and inhibiting the invasion and growth of cancer cells. Therefore, PRL-3 is a promising diagnostic marker and therapeutic target in tumors. So far, only several PRL-3 inhibitors have been reported. In this study, six rhodanine derivatives were synthesized and characterized. The compounds were evaluated against tyrosine phosphatase PRL-3. Among these compounds, 5-(5-chloro-2-(trifluoromethyl)benzylidene)-2-thioxothiazolidin-4-one (4) could effectively inhibit PRL-3 with IC50 value of 15.22 μM. Fluorescent assays suggested compound 4 tightly bound to tyrosine phosphatase PRL-3 with the molar ratio of 1:1, and the binding constant of 1.74 × 106 M-1. Compound 4 entered into SW-480 cells, selectively inhibited the expression of PRL-3 and increased the phosphorylation of PRL-3 substrates, and decreased the survival rate of SW-480 cells with IC50 of 6.64 μM and induced apoptosis. The results revealed that compound 4 is a dual functional inhibitor against the activity and expression of PRL-3 and a promising anti-cancer candidate targeting PRL-3.
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Sevillano J, Sánchez-Alonso MG, Pizarro-Delgado J, Ramos-Álvarez MDP. Role of Receptor Protein Tyrosine Phosphatases (RPTPs) in Insulin Signaling and Secretion. Int J Mol Sci 2021; 22:ijms22115812. [PMID: 34071721 PMCID: PMC8198922 DOI: 10.3390/ijms22115812] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 01/12/2023] Open
Abstract
Changes in lifestyle in developed countries have triggered the prevalence of obesity and type 2 diabetes mellitus (T2DM) in the latest years. Consequently, these metabolic diseases associated to insulin resistance, and the morbidity associated with them, accounts for enormous costs for the health systems. The best way to face this problem is to identify potential therapeutic targets and/or early biomarkers to help in the treatment and in the early detection. In the insulin receptor signaling cascade, the activities of protein tyrosine kinases and phosphatases are coordinated, thus, protein tyrosine kinases amplify the insulin signaling response, whereas phosphatases are required for the regulation of the rate and duration of that response. The focus of this review is to summarize the impact of transmembrane receptor protein tyrosine phosphatase (RPTPs) in the insulin signaling cascade and secretion, and their implication in metabolic diseases such as obesity and T2DM.
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Abdelhameed AS, Attwa MW, Kadi AA. Characterization of Stable and Reactive Metabolites of the Anticancer Drug, Ensartinib, in Human Liver Microsomes Using LC-MS/MS: An in silico and Practical Bioactivation Approach. Drug Des Devel Ther 2020; 14:5259-5273. [PMID: 33299299 PMCID: PMC7721118 DOI: 10.2147/dddt.s274018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/29/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Ensartinib (ESB) is a novel anaplastic lymphoma kinase inhibitor (ALK) with additional activity against Abelson murine leukemia (ABL), met proto-oncogene (MET), receptor tyrosine kinase (AXL), and v-ros UR2 sarcoma virus oncogene homolog 1 (ROS1) and is considered a safer alternative for other ALK inhibitors. ESB chemical structure contains a dichloro-fluorophenyl ring and cyclic tertiary amine rings (piperazine) that can be bioactivated generating reactive intermediates. METHODS In vitro metabolic study of ESB with human liver microsomes (HLMs) was performed and the hypothesis of generating reactive intermediates during metabolism was tested utilizing trapping agents to capture and stabilize reactive intermediates to facilitate their LC-MS/MS detection. Reduced glutathione (GSH) and potassium cyanide (KCN) were utilized as trapping agents for quinone methide and iminium intermediates, respectively. RESULTS Four in vitro ESB phase I metabolites were characterized. Three reactive intermediates including one epoxide and one iminium intermediates were characterized. ESB bioactivation is proposed to occur through unexpected metabolic pathways. The piperazine ring was bioactivated through iminium ions intermediates generation, while the dichloro-phenyl group was bioactivated through a special mechanism that was revealed by LC-MS/MS. CONCLUSION These findings lay the foundations for additional work on ESB toxicity. Substituents to the bioactive centers (piperazine ring), either for blocking or isosteric replacement, would likely block or interrupt hydroxylation reaction that will end the bioactivation sequence.
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Affiliation(s)
- Ali S Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh11451, Kingdom of Saudi Arabia
| | - Mohamed W Attwa
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh11451, Kingdom of Saudi Arabia
| | - Adnan A Kadi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh11451, Kingdom of Saudi Arabia
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12
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Koseska A, Bastiaens PI. Processing Temporal Growth Factor Patterns by an Epidermal Growth Factor Receptor Network Dynamically Established in Space. Annu Rev Cell Dev Biol 2020; 36:359-383. [DOI: 10.1146/annurev-cellbio-013020-103810] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The proto-oncogenic epidermal growth factor (EGF) receptor (EGFR) is a tyrosine kinase whose sensitivity and response to growth factor signals that vary over time and space determine cellular behavior within a developing tissue. The molecular reorganization of the receptors on the plasma membrane and the enzyme-kinetic mechanisms of phosphorylation are key determinants that couple growth factor binding to EGFR signaling. To enable signal initiation and termination while simultaneously accounting for suppression of aberrant signaling, a coordinated coupling of EGFR kinase and protein tyrosine phosphatase activity is established through space by vesicular dynamics. The dynamical operation mode of this network enables not only time-varying growth factor sensing but also adaptation of the response depending on cellular context. By connecting spatially coupled enzymatic kinase/phosphatase processes and the corresponding dynamical systems description of the EGFR network, we elaborate on the general principles necessary for processing complex growth factor signals.
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Affiliation(s)
- Aneta Koseska
- Lise Meitner Group Cellular Computations and Learning, Centre of Advanced European Studies and Research (caesar), D-53175 Bonn, Germany
| | - Philippe I.H. Bastiaens
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, 44227 Dortmund, Germany
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13
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Zhu Y, Costa M. Metals and molecular carcinogenesis. Carcinogenesis 2020; 41:1161-1172. [PMID: 32674145 PMCID: PMC7513952 DOI: 10.1093/carcin/bgaa076] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/19/2020] [Accepted: 07/13/2020] [Indexed: 12/11/2022] Open
Abstract
Many metals are essential for living organisms, but at higher doses they may be toxic and carcinogenic. Metal exposure occurs mainly in occupational settings and environmental contaminations in drinking water, air pollution and foods, which can result in serious health problems such as cancer. Arsenic (As), beryllium (Be), cadmium (Cd), chromium (Cr) and nickel (Ni) are classified as Group 1 carcinogens by the International Agency for Research on Cancer. This review provides a comprehensive summary of current concepts of the molecular mechanisms of metal-induced carcinogenesis and focusing on a variety of pathways, including genotoxicity, mutagenesis, oxidative stress, epigenetic modifications such as DNA methylation, histone post-translational modification and alteration in microRNA regulation, competition with essential metal ions and cancer-related signaling pathways. This review takes a broader perspective and aims to assist in guiding future research with respect to the prevention and therapy of metal exposure in human diseases including cancer.
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Affiliation(s)
- Yusha Zhu
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Max Costa
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
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14
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Farhat S, Tanguy A, Pales Espinosa E, Guo X, Boutet I, Smolowitz R, Murphy D, Rivara GJ, Allam B. Identification of variants associated with hard clam, Mercenaria mercenaria, resistance to Quahog Parasite Unknown disease. Genomics 2020; 112:4887-4896. [PMID: 32890702 DOI: 10.1016/j.ygeno.2020.08.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
Severe losses in aquacultured and wild hard clam (Mercenaria mercenaria) stocks have been previously reported in the northeastern United States due to a protistan parasite called QPX (Quahog Parasite Unknown). Previous work demonstrated that clam resistance to QPX is under genetic control. This study identifies single nucleotide polymorphism (SNP) associated with clam survivorship from two geographically segregated populations, both deployed in an enzootic site. The analysis contrasted samples collected before and after undergoing QPX-related mortalities and relied on a robust draft clam genome assembly. ~200 genes displayed significant variant enrichment at each sampling point in both populations, including 18 genes shared between both populations. Markers from both populations were identified in genes related to apoptosis pathways, protein-protein interaction, receptors, and signaling. This research begins to identify genetic markers associated with clam resistance to QPX disease, leading the way for the development of resistant clam stocks through marker-assisted selection.
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Affiliation(s)
- Sarah Farhat
- Marine Animal Disease Laboratory, School of Marine and Atmospheric Sciences, Stony Brook University, 100 Nicolls Road, Stony Brook, NY 11794-5000, USA
| | - Arnaud Tanguy
- Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Sorbonne Université, Place Georges Teissier, 29680 Roscoff, France
| | - Emmanuelle Pales Espinosa
- Marine Animal Disease Laboratory, School of Marine and Atmospheric Sciences, Stony Brook University, 100 Nicolls Road, Stony Brook, NY 11794-5000, USA
| | - Ximing Guo
- Haskin Shellfish Research Laboratory, Department of Marine and Coastal Sciences, Rutgers University, 6959 Miller Avenue, Port Norris, NJ 08349, USA
| | - Isabelle Boutet
- Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Sorbonne Université, Place Georges Teissier, 29680 Roscoff, France
| | - Roxanna Smolowitz
- Roger Williams University, Department of Biology, Marine Biology, and Environmental Science, 1 Old Ferry Rd, Bristol, RI 02809, USA
| | - Diane Murphy
- Cape Cod Cooperative Extension, 3195 Main St, Barnstable, MA 02630, NY 1197, USA
| | - Gregg J Rivara
- Cornell University Cooperative Extension of Suffolk County, 3690 Cedar Beach Rd, Southold, NY 11971, USA
| | - Bassem Allam
- Marine Animal Disease Laboratory, School of Marine and Atmospheric Sciences, Stony Brook University, 100 Nicolls Road, Stony Brook, NY 11794-5000, USA.
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15
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Liu M, Tan H, Chen G. Mechanistic insights of adenine promoted activity of low-molecule tyrosine phosphatase: An ONIOM study. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Pham HTT, Ryu B, Cho HM, Lee BW, Yang WY, Park EJ, Tran VO, Oh WK. Oleanane hemiacetal glycosides from Gymnema latifolium and their inhibitory effects on protein tyrosine phosphatase 1B. PHYTOCHEMISTRY 2020; 170:112181. [PMID: 31727321 DOI: 10.1016/j.phytochem.2019.112181] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/28/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
Gymnema sylvestre (Retz.) R. Br. ex Schult. has a long history to be used as an antidiabetic herbal medicine. Various varieties of G. sylvestre, have been studied intensively on their 3β-hydroxy oleanane triterpenoid composition for hypoglycemic effects. It is also well-known that most species belonging to the same genus have similar chemical composition and biological activity. Thus, an extract of the Gymnema latifolium Wall. ex Wight, which showed considerable protein tyrosine phosphatase 1B (PTP1B) inhibitory activity (>70% inhibition at 30 μg/mL), was studied intensively. Extensive chemical investigation on the 70% EtOH of G. latifolium led to the isolation of four previously undescribed oleanane hemiacetal glycosides, gymlatinosides GL1-GL4, three previously undescribed oleanane glycosides, gymlatinosides GL5-GL7, and two known 3β-hydroxy oleanane analogs. The structures of the previously undescribed compounds were elucidated using diverse spectroscopic methods. The hemiacetal structure of the glycoside portion was further elaborated precisely by HMBC and J resolved proton NMR. Gymlatinosides GL2 and GL3 showed considerable PTP1B inhibitory effect.
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Affiliation(s)
- Ha Thanh Tung Pham
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byeol Ryu
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyo Moon Cho
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ba-Wool Lee
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woo Young Yang
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Eun Jin Park
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Van On Tran
- Department of Botany, Hanoi University of Pharmacy, Hanoi, 100000, Viet Nam
| | - Won Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea.
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17
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Lapointe F, Turcotte S, Roy J, Bissonnette E, Rola-Pleszczynski M, Stankova J. RPTPε promotes M2-polarized macrophage migration through ROCK2 signaling and podosome formation. J Cell Sci 2020; 133:jcs.234641. [PMID: 31722979 DOI: 10.1242/jcs.234641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 11/05/2019] [Indexed: 01/30/2023] Open
Abstract
Cysteinyl-leukotrienes (cys-LTs) have well-characterized physiopathological roles in the development of inflammatory diseases. We have previously found that protein tyrosine phosphatase ε (PTPε) is a signaling partner of CysLT1R, a high affinity receptor for leukotriene D4 (LTD4). There are two major isoforms of PTPε, receptor-like (RPTPε) and cytoplasmic (cyt-)PTPε, both of which are encoded by the PTPRE gene but from different promoters. In most cells, their expression is mutually exclusive, except in human primary monocytes, which express both isoforms. Here, we show differential PTPε isoform expression patterns between monocytes, M1 and M2 human monocyte-derived macrophages (hMDMs), with the expression of glycosylated forms of RPTPε predominantly in M2-polarized hMDMs. Using PTPε-specific siRNAs and expression of RPTPε and cyt-PTPε, we found that RPTPε is involved in monocyte adhesion and migration of M2-polarized hMDMs in response to LTD4 Altered organization of podosomes and higher phosphorylation of the inhibitory Y-722 residue of ROCK2 was also found in PTPε-siRNA-transfected cells. In conclusion, we show that differentiation and polarization of monocytes into M2-polarized hMDMs modulates the expression of PTPε isoforms and RPTPε is involved in podosome distribution, ROCK2 activation and migration in response to LTD4.
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Affiliation(s)
- Fanny Lapointe
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4, Canada
| | - Sylvie Turcotte
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4, Canada
| | - Joanny Roy
- Department of Medicine, Université Laval, Québec G1V 4G5, Canada
| | | | - Marek Rola-Pleszczynski
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4, Canada
| | - Jana Stankova
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4, Canada
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18
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Attwa MW, Kadi AA, Abdelhameed AS. Phase I metabolic profiling and unexpected reactive metabolites in human liver microsome incubations of X-376 using LC-MS/MS: bioactivation pathway elucidation and in silico toxicity studies of its metabolites. RSC Adv 2020; 10:5412-5427. [PMID: 35498318 PMCID: PMC9049494 DOI: 10.1039/c9ra09115g] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/08/2020] [Indexed: 11/21/2022] Open
Abstract
Metabolites of X-376 were characterized by LC-MS/MS. Pyridazine ring and dichloro-phenyl groups were bioactivated by novel pathways.
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Affiliation(s)
- Mohamed W. Attwa
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Adnan A. Kadi
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Ali S. Abdelhameed
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
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19
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Rhee SG. A catalytic career: Studies spanning glutamine synthetase, phospholipase C, peroxiredoxin, and the intracellular messenger role of hydrogen peroxide. J Biol Chem 2019; 294:5169-5180. [PMID: 30926755 DOI: 10.1074/jbc.x119.007975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
I learned biochemistry from P. Boon Chock and Earl Stadtman while working on the regulation of Escherichia coli glutamine synthetase as a postdoctoral fellow at the National Institutes of Health. After becoming a tenured scientist at the same institute, my group discovered, purified, and cloned the first three prototypical members of the phospholipase C family and uncovered the mechanisms by which various cell-surface receptors activate these enzymes to generate diacylglycerol and inositol 1,4,5-trisphosphate. We also discovered the family of peroxiredoxin (Prx) enzymes that catalyze the reduction of H2O2, and we established that mammalian cells express six Prx isoforms that not only protect against oxidative damage but also mediate cell signaling by modulating intracellular H2O2 levels. To validate the signaling role of H2O2, we showed that epidermal growth factor induces a transient increase in intracellular H2O2 levels, and the essential cysteine residue of protein-tyrosine phosphatases is a target for specific and reversible oxidation by the H2O2 produced in such cells. These observations led to a new paradigm in receptor signaling, in which protein tyrosine phosphorylation is achieved not via activation of receptor tyrosine kinases alone but also through concurrent inhibition of protein-tyrosine phosphatases by H2O2 Our studies revealed that Prx isozymes are extensively regulated via phosphorylation as well as by hyperoxidation of the active-site cysteine to cysteine sulfinic acid, with the reverse reaction being catalyzed by sulfiredoxin. This reversible hyperoxidation of Prx was further shown to constitute a universal marker for circadian rhythms in all domains of life.
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Affiliation(s)
- Sue Goo Rhee
- From the Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul 120-752, Korea and the Biochemistry and Biophysics Center, NHLBI, National Institutes of Health, Bethesda, Maryland 20892
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20
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Krishnaswamy VR, Benbenishty A, Blinder P, Sagi I. Demystifying the extracellular matrix and its proteolytic remodeling in the brain: structural and functional insights. Cell Mol Life Sci 2019; 76:3229-3248. [PMID: 31197404 PMCID: PMC11105229 DOI: 10.1007/s00018-019-03182-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 05/29/2019] [Accepted: 05/31/2019] [Indexed: 12/29/2022]
Abstract
The extracellular matrix (ECM) plays diverse roles in several physiological and pathological conditions. In the brain, the ECM is unique both in its composition and in functions. Furthermore, almost all the cells in the central nervous system contribute to different aspects of this intricate structure. Brain ECM, enriched with proteoglycans and other small proteins, aggregate into distinct structures around neurons and oligodendrocytes. These special structures have cardinal functions in the normal functioning of the brain, such as learning, memory, and synapse regulation. In this review, we have compiled the current knowledge about the structure and function of important ECM molecules in the brain and their proteolytic remodeling by matrix metalloproteinases and other enzymes, highlighting the special structures they form. In particular, the proteoglycans in brain ECM, which are essential for several vital functions, are emphasized in detail.
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Affiliation(s)
| | - Amit Benbenishty
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Pablo Blinder
- Neurobiology, Biochemistry and Biophysics School, Tel Aviv University, Tel Aviv, Israel
- Sagol School for Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Irit Sagi
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel.
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21
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Lapointe F, Turcotte S, Véronneau S, Rola-Pleszczynski M, Stankova J. Role of Protein Tyrosine Phosphatase Epsilon (PTP ε) in Leukotriene D 4-Induced CXCL8 Expression. J Pharmacol Exp Ther 2019; 369:270-281. [PMID: 30867226 DOI: 10.1124/jpet.118.255422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 03/06/2019] [Indexed: 12/11/2022] Open
Abstract
Phosphorylation on tyrosine residues is recognized as an important mechanism for connecting extracellular stimuli to cellular events and defines a variety of physiologic responses downstream of G protein-coupled receptor (GPCR) activation. To date, few protein tyrosine phosphatases (PTPs) have been shown to associate with GPCRs, and little is known about their role in GPCR signaling. To discover potential cysteinyl-leukotriene receptor (CysLT1R)-interacting proteins, we identified protein tyrosine phosphatase ε (PTPε) in a yeast two-hybrid assay. Since both proteins are closely linked to asthma, we further investigated their association. Using a human embryonic kidney cell line 293 (HEK-293) cell line stably transfected with the receptor (HEK-LT1), as well as human primary monocytes, we found that PTPε colocalized with CysLT1R in both resting and leukotriene D4 (LTD4)-stimulated cells. Cotransfection of HEK-LT1 with PTPε had no effect on CysLT1R expression or LTD4-induced internalization, but it inhibited LTD4-induced CXC chemokine 8 (CXCL8) promoter transactivation, protein expression, and secretion. Moreover, reduced phosphorylation of extracellular signal regulated kinase 1/2 (ERK1/2), but not of p38 or c-Jun-N-terminal kinase 1 or 2 mitogen-activated protein kinases (MAPKs), was observed upon LTD4 stimulation of HEK-LT1 coexpressing cytosolic (cyt-) PTPε, but not receptor (R) PTPε The increased interaction of cyt-PTPε and ERK1/2 after LTD4 stimulation was shown by coimmunoprecipitation. In addition, enhanced ERK1/2 phosphorylation and CXCL8 secretion were found in LTD4-stimulated human monocytes transfected with PTPε-specific siRNAs, adding support to a regulatory/inhibitory role of PTPε in CysLT1R signaling. Given that the prevalence of severe asthma is increasing, the identification of PTPε as a new potential therapeutic target may be of interest.
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Affiliation(s)
- Fanny Lapointe
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Sylvie Turcotte
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Steeve Véronneau
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Marek Rola-Pleszczynski
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Jana Stankova
- Division of Immunology and Allergy, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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22
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Liang J, Shi J, Wang N, Zhao H, Sun J. Tuning the Protein Phosphorylation by Receptor Type Protein Tyrosine Phosphatase Epsilon (PTPRE) in Normal and Cancer Cells. J Cancer 2019; 10:105-111. [PMID: 30662530 PMCID: PMC6329871 DOI: 10.7150/jca.27633] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 10/24/2018] [Indexed: 12/17/2022] Open
Abstract
Tyrosine phosphorylation is an important post-translation modification of proteins that is controlled by tyrosine kinases and phosphatases. Disruption of the balance between the activity of tyrosine kinases and phosphatases may result in diseases. Receptor type protein tyrosine phosphatase epsilon (PTPRE) is closely related with receptor type protein tyrosine phosphatase alpha (PTPRA). PTPRE has been studied in osteoclast cells, nerve cells, hematopoietic cells, cancer cells and others, and it has different functions among various tissues. In this review, we summarized the current knowledge about the regulation of PTPRE on cellular signal transduction and its function under normal and pathological conditions.
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Affiliation(s)
- Jinping Liang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, P.R.China.,Ningxia Key laboratory of Clinical and Pathogenic Microbiology, The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Jun Shi
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, P.R.China
| | - Na Wang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, P.R.China
| | - Hui Zhao
- School of Biomedical Science, Faculty of Medicine, the Chinese University of Hong Kong
| | - Jianmin Sun
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, P.R.China.,Division of Translational Cancer Research, Lund Stem Cell Center, Department of Laboratory Medicine, Lund University, Lund, Sweden
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23
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Yang F, Zhang LW, Feng MT, Liu AH, Li J, Zhao TS, Lai XP, Wang B, Guo YW, Mao SC. Dictyoptesterols A-C, ∆ 22-24-oxo cholestane-type sterols with potent PTP1B inhibitory activity from the brown alga Dictyopteris undulata Holmes. Fitoterapia 2018; 130:241-246. [PMID: 30196076 DOI: 10.1016/j.fitote.2018.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/01/2018] [Accepted: 09/03/2018] [Indexed: 01/10/2023]
Abstract
Three new cholestane-type sterols bearing an unusual ∆22-24-oxo side chain, namely, dictyoptesterols A-C (1-3), were isolated from the brown alga Dictyopteris undulata Holmes, together with five known strutural analogues (4-8). Their structures were elucidated on the basis of by extensive spectroscopic analysis. The absolute configurations of the steroidal nuclei of the new compounds were proposed by a comparison of NMR data with those of related known compounds as well as biogenetic considerations. All of the isolates were evaluated in vitro for their potential to inhibit protein tyrosine phosphatase-1B (PTP1B) activity. The results showed that compounds 1-5 exhibited different levels of PTP1B inhibitory activities with IC50 values ranging from 3.03 ± 0.76 to 15.01 ± 2.88 μM. In particular, compounds 3 and 4 showed promising inhibitory effects towards PTP1B with IC50 values of 3.03 ± 0.76 and 3.72 ± 0.40 μM, respectively, when compared to the positive control oleanolic acid (IC50, 2.83 ± 0.39 μM). The chemotaxonomic significance of these isolated ∆22-24-oxo cholestanes has also been discussed.
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Affiliation(s)
- Fei Yang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Liang-Wei Zhang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Mei-Tang Feng
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Ai-Hong Liu
- Center of Analysis and Testing, Nanchang University, Nanchang 330047, People's Republic of China
| | - Jia Li
- State key laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Tian-Sheng Zhao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Xiao-Ping Lai
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Bin Wang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Yue-Wei Guo
- State key laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Shui-Chun Mao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China.
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24
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Liu A, Sun Y, Yu B. MicroRNA-208a Correlates Apoptosis and Oxidative Stress Induced by H 2O 2 through Protein Tyrosine Kinase/Phosphatase Balance in Cardiomyocytes. Int Heart J 2018; 59:829-836. [PMID: 29877301 DOI: 10.1536/ihj.17-276] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
MicroRNAs, a class of small and non-encoding RNAs that transcriptionally or post-transcriptionally modulate the expression of their target genes, have been implicated as critical regulatory molecules in ischemia-/reperfusion-induced cardiac injury. In the present study, we report on the role of miR-208a in myocardial I/R injury and the underlying cardio-protective mechanism. The gain-of-function and loss-of-function were used to explore the effects of miR-208a on cardiac injury induced by H2O2 in cardiomyocytes. As predicted, knockdown of endogenous miR-208a significantly decreased the level of cellular reactive oxygen species (ROS) and reduced cardiomyocyte apoptosis. In addition, miR-208a overexpression increased the ROS level and attenuated cell apoptosis in cardiomyocytes. Furthermore, protein tyrosine phosphatase receptor type G (PTPRG) and protein tyrosine phosphatase, non-receptor type 4 (PTPN4), which participate in regulating the level of cellular protein tyrosine phosphorylation balance, were predicted and verified as potential miR-208a targets using bioinformatics and luciferase assay. In summary, this study demonstrated that miR-208a plays a critical protective role in ROS-induced cardiac apoptosis.
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Affiliation(s)
- Aijun Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical University.,Department of Cardiology, Benxi Central Hospital
| | - Yiping Sun
- Department of Cardiac Surgery, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Bo Yu
- Department of Cardiology, The First Affiliated Hospital of China Medical University
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Law LA, Graham DK, Di Paola J, Branchford BR. GAS6/TAM Pathway Signaling in Hemostasis and Thrombosis. Front Med (Lausanne) 2018; 5:137. [PMID: 29868590 PMCID: PMC5954114 DOI: 10.3389/fmed.2018.00137] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 04/23/2018] [Indexed: 01/01/2023] Open
Abstract
The GAS6/TYRO3-AXL-MERTK (TAM) signaling pathway is essential for full and sustained platelet activation, as well as thrombus stabilization. Inhibition of this pathway decreases platelet aggregation, shape change, clot retraction, aggregate formation under flow conditions, and surface expression of activation markers. Transgenic mice deficient in GAS6, or any of the TAM family of receptors that engage this ligand, exhibit in vivo protection against arterial and venous thrombosis but do not demonstrate either spontaneous or prolonged bleeding compared to their wild-type counterparts. Comparable results are observed in wild-type mice treated with pharmacological inhibitors of the GAS6-TAM pathway. Thus, GAS6/TAM inhibition offers an attractive novel therapeutic option that may allow for a moderate reduction in platelet activation and decreased thrombosis while still permitting the primary hemostatic function of platelet plug formation.
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Affiliation(s)
- Luke A Law
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, United States
| | - Douglas K Graham
- Section of Hematology/Oncology, Department of Pediatrics, Emory University, Atlanta, GA, United States
| | - Jorge Di Paola
- Section of Hematology/Oncology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, United States.,University of Colorado Hemophilia and Thrombosis Center, Aurora, CO, United States
| | - Brian R Branchford
- Section of Hematology/Oncology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, United States.,University of Colorado Hemophilia and Thrombosis Center, Aurora, CO, United States
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26
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Kuwabara T, Matsui Y, Ishikawa F, Kondo M. Regulation of T-Cell Signaling by Post-Translational Modifications in Autoimmune Disease. Int J Mol Sci 2018. [PMID: 29534522 PMCID: PMC5877680 DOI: 10.3390/ijms19030819] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The adaptive immune system involves antigen-specific host defense mechanisms mediated by T and B cells. In particular, CD4+ T cells play a central role in the elimination of pathogens. Immunological tolerance in the thymus regulates T lymphocytes to avoid self-components, including induction of cell death in immature T cells expressing the self-reactive T-cell receptor repertoire. In the periphery, mature T cells are also regulated by tolerance, e.g., via induction of anergy or regulatory T cells. Thus, T cells strictly control intrinsic signal transduction to prevent excessive responses or self-reactions. If the inhibitory effects of T cells on these mechanisms are disrupted, T cells may incorrectly attack self-components, which can lead to autoimmune disease. The functions of T cells are supported by post-translational modifications, particularly phosphorylation, of signaling molecules, the proper regulation of which is controlled by endogenous mechanisms within the T cells themselves. In recent years, molecular targeted agents against kinases have been developed for treatment of autoimmune diseases. In this review, we discuss T-cell signal transduction in autoimmune disease and provide an overview of acetylation-mediated regulation of T-cell signaling pathways.
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Affiliation(s)
- Taku Kuwabara
- Department of Molecular Immunology, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan.
| | - Yukihide Matsui
- Department of Molecular Immunology, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan.
| | - Fumio Ishikawa
- Department of Molecular Immunology, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan.
| | - Motonari Kondo
- Department of Molecular Immunology, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan.
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27
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Wang M, Li X, Dong L, Chen X, Xu W, Wang R. Virtual screening, optimization, and identification of a novel specific PTP-MEG2 Inhibitor with potential therapy for T2DM. Oncotarget 2018; 7:50828-50834. [PMID: 27384997 PMCID: PMC5239439 DOI: 10.18632/oncotarget.10341] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/03/2016] [Indexed: 11/25/2022] Open
Abstract
Megakaryocyte protein tyrosine phosphatase 2 (PTP-MEG2) is a tyrosine phosphatase expressed in megakaryocytic cells, and causes insulin sensitization when down regulated. Therefore, specific inhibitors of PTP-MEG2 are potential candidates for novel Type 2 Diabetes (T2DM)therapy. In this study, we discovered PTP-MEG2 inhibitors using high throughput and virtual screening (HTS/VS) and structural optimization in silicon. Eight compound-candidates were identified from the interactions with PTP-MEG2, protein tyrosine phosphatase 1B (PTP1B) and T cell protein tyrosine phosphatase (TCPTP). Results from enzymatic assays show compounds 4a and 4b inhibited PTP-MEG2 activity with an IC50 of 3.2 μM and 4.3 μM, respectively. Further, they showed a 7.5 and 5.5 fold change against PTP1B and TCPTP, respectively. We propose compounds 4a and 4b are PTP-MEG2 inhibitors with potential therapeutic use in T2DM treatment.
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Affiliation(s)
- Meiyan Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Xiaobo Li
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China.,Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Lei Dong
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Xiubo Chen
- Tianjin Medical University Eye Hospital, Tianjin, China
| | - Weiren Xu
- Tianjin Key Laboratory of Molecular Design and Drug Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin, China
| | - Runling Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
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Kadi AA, Attwa M, Darwish HW. LC-ESI-MS/MS reveals the formation of reactive intermediates in brigatinib metabolism: elucidation of bioactivation pathways. RSC Adv 2018; 8:1182-1190. [PMID: 35540908 PMCID: PMC9077137 DOI: 10.1039/c7ra10533a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 12/20/2017] [Indexed: 11/21/2022] Open
Abstract
Four phase I BGB metabolites and three cyano adducts for BGB were detected using LC-MS/MS. The piperidine ring was found to be responsible for BGB bioactivation and the bioactivation pathways are proposed.
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Affiliation(s)
- Adnan A. Kadi
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh
- Kingdom of Saudi Arabia
| | - Mohamed W. Attwa
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh
- Kingdom of Saudi Arabia
| | - Hany W. Darwish
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh
- Kingdom of Saudi Arabia
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29
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Liao SC, Li JX, Yu L, Sun SR. Protein tyrosine phosphatase 1B expression contributes to the development of breast cancer. J Zhejiang Univ Sci B 2017; 18:334-342. [PMID: 28378571 DOI: 10.1631/jzus.b1600184] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The protein tyrosine phosphatase 1B (PTP1B) is an important regulator of metabolism. The relationship between PTP1B and tumors is quite complex. The purpose of this study is to explore the expression pattern and role of PTP1B in breast cancer. The expression of PTP1B was detected in 67 samples of breast cancer tissue by Western blot. Cell growth assay, Transwell migration assay, and Scratch motility assay were used to examine the proliferation and migration of MCF-7 with and without PTP1B. The total levels and phosphorylated levels of signal transduction and activator of transcription 3 (STAT3) and the expression of C-C motif chemokine ligand 5 (CCL5) were also examined by Western blot. PTP1B was overexpressed in over 70% of breast cancer tissues, correlating with patients with estrogen receptor (ER)-negative, progesterone receptor (PR)-negative, and human epidermal growth factor receptor 2 (HER2)-positive tumors. The data also showed that both tumor size and lymph node metastasis were significantly higher in patients with a higher level of PTP1B. The proliferation and migration of MCF-7 cells were found to be inhibited after knocking down the gene of PTP1B. Our data also showed that PTP1B could up-regulate the dephosphorylated level of STAT3, which could increase the expression of CCL5. These phenomena indicated that PTP1B may play a crucial role in the development of breast cancer.
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Affiliation(s)
- Shi-Chong Liao
- Department of Thyroid and Breast Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Jin-Xin Li
- Department of Teaching Administration, Wuhan University School of Medicine, Wuhan 430071, China
| | - Li Yu
- Intensive Care Unit, the Central Hospital of Wuhan, Wuhan 430014, China
| | - Sheng-Rong Sun
- Department of Thyroid and Breast Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Park JW, Song KD, Kim NY, Choi JY, Hong SA, Oh JH, Kim SW, Lee JH, Park TS, Kim JK, Kim JG, Cho BW. Molecular analysis of alternative transcripts of equine AXL receptor tyrosine kinase gene. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 30:1471-1477. [PMID: 28854781 PMCID: PMC5582333 DOI: 10.5713/ajas.17.0409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 06/24/2017] [Accepted: 07/28/2017] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Since athletic performance is a most importance trait in horses, most research focused on physiological and physical studies of horse athletic abilities. In contrast, the molecular analysis as well as the regulatory pathway studies remain insufficient for evaluation and prediction of horse athletic abilities. In our previous study, we identified AXL receptor tyrosine kinase (AXL) gene which was expressed as alternative spliced isoforms in skeletal muscle during exercise. In the present study, we validated two AXL alternative splicing transcripts (named as AXLa for long form and AXLb for short form) in equine skeletal muscle to gain insight(s) into the role of each alternative transcript during exercise. METHODS We validated two isoforms of AXL transcripts in horse tissues by reverse transcriptase polymerase chain reaction (RT-PCR), and then cloned the transcripts to confirm the alternative locus and its sequences. Additionally, we examined the expression patterns of AXLa and AXLb transcripts in horse tissues by quantitative RT-PCR (qRT-PCR). RESULTS Both of AXLa and AXLb transcripts were expressed in horse skeletal muscle and the expression levels were significantly increased after exercise. The sequencing analysis showed that there was an alternative splicing event at exon 11 between AXLa and AXLb transcripts. 3-dimentional (3D) prediction of the alternative protein structures revealed that the structural distance of the connective region between fibronectin type 3 (FN3) and immunoglobin (Ig) domain was different between two alternative isoforms. CONCLUSION It is assumed that the expression patterns of AXLa and AXLb transcripts would be involved in regulation of exercise-induced stress in horse muscle possibly through an NF-κB signaling pathway. Further study is necessary to uncover biological function(s) and significance of the alternative splicing isoforms in race horse skeletal muscle.
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Affiliation(s)
- Jeong-Woong Park
- Department of Animal Science, College of Natural Resources and Life Sciences, Pusan National University, Miryang 50463, Korea
| | - Ki-Duk Song
- Department of Animal Biotechnology, Chonbuk National, University, Jeonju 54896, Korea
| | - Nam Young Kim
- National Institute of Animal Science, Rural Development Administration, Jeju 63242, Korea
| | - Jae-Young Choi
- Department of Animal Science, College of Natural Resources and Life Sciences, Pusan National University, Miryang 50463, Korea
| | - Seul A Hong
- Department of Animal Science, College of Natural Resources and Life Sciences, Pusan National University, Miryang 50463, Korea
| | - Jin Hyeog Oh
- Department of Animal Science, College of Natural Resources and Life Sciences, Pusan National University, Miryang 50463, Korea
| | - Si Won Kim
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Jeong Hyo Lee
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Tae Sub Park
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Jin-Kyoo Kim
- Department of Microbiology, College of Natural Sciences, Changwon National University, Changwon 51140, Korea
| | - Jong Geun Kim
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Byung-Wook Cho
- Department of Animal Science, College of Natural Resources and Life Sciences, Pusan National University, Miryang 50463, Korea
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31
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Tan XF, Uddin Z, Park C, Song YH, Son M, Lee KW, Park KH. Competitive protein tyrosine phosphatase 1B (PTP1B) inhibitors, prenylated caged xanthones from Garcinia hanburyi and their inhibitory mechanism. Bioorg Med Chem 2017; 25:2498-2506. [PMID: 28318895 DOI: 10.1016/j.bmc.2017.03.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/01/2017] [Accepted: 03/05/2017] [Indexed: 02/07/2023]
Abstract
Protein tyrosine phosphatase 1B (PTP1B) plays important role in diabetes, obesity and cancer. The methanol extract of the gum resin of Garcinia hanburyi (G. hanburyi) showed potent PTP1B inhibition at 10µg/ml. The active compounds were identified as prenylated caged xanthones (1-9) which inhibited PTP1B in dose-dependent manner. Carboxybutenyl group within caged motif (A ring) was found to play a critical role in enzyme inhibition such as 1-6 (IC50s=0.47-4.69µM), whereas compounds having hydroxymethylbutenyl 7 (IC50=70.25µM) and methylbutenyl 8 (IC50>200µM) showed less activity. The most potent inhibitor, gambogic acid 1 (IC50=0.47µM) showed 30-fold more potency than ursolic acid (IC50=15.5µM), a positive control. In kinetic study, all isolated xanthones behaved as competitive inhibitors which were fully demonstrated with Km, Vmax and Kik/Kiv ratio. It was also proved that inhibitor 1 operated under the enzyme isomerization model having k5=0.0751µM-1S-1, k6=0.0249µM-1S-1 and Kiapp=0.499µM. To develop a pharmacophore model, we explored the binding sites of compound 1 and 7 in PTP1B. These modeling results were in agreement with our findings, which revealed that the inhibitory activities are tightly related to caged motif and prenyl group in A ring.
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Affiliation(s)
- Xue Fei Tan
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Zia Uddin
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Chanin Park
- Division of Applied Life Science (BK21 Plus), PMBBRC, RINS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Yeong Hun Song
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Minky Son
- Division of Applied Life Science (BK21 Plus), PMBBRC, RINS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Keun Woo Lee
- Division of Applied Life Science (BK21 Plus), PMBBRC, RINS, Gyeongsang National University, Jinju 52828, Republic of Korea.
| | - Ki Hun Park
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 52828, Republic of Korea.
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Du X, Zhou J, Wang H, Shi J, Kuang Y, Zeng W, Yang Z, Xu B. In situ generated D-peptidic nanofibrils as multifaceted apoptotic inducers to target cancer cells. Cell Death Dis 2017; 8:e2614. [PMID: 28206986 PMCID: PMC5386457 DOI: 10.1038/cddis.2016.466] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 11/28/2016] [Accepted: 11/30/2016] [Indexed: 12/31/2022]
Abstract
Nanofibrils of small molecules, as a new class of biofunctional entities, exhibit emergent properties for controlling cell fates, but the relevant mechanism remains to be elucidated and the in vivo effect has yet to be examined. Here, we show that D-peptide nanofibrils, generated by enzyme-instructed self-assembly (EISA), pleiotropically activate extrinsic death signaling for selectively killing cancer cells. Catalyzed by alkaline phosphatases and formed in situ on cancer cells, D-peptide nanofibrils present autocrine proapoptotic ligands to their cognate receptors in a juxtacrine manner, as well as directly cluster the death receptors. As multifaceted initiators, D-peptide nanofibrils induce apoptosis of cancer cells without harming normal cells in a co-culture, kill multidrug-resistant (MDR) cancer cells, boost the activities of anticancer drugs, and inhibit tumor growth in a murine model. Such a supramolecular cellular biochemical process (consisting of reaction, assembly, and binding) for multi-targeting or modulating protein–protein interaction networks ultimately may lead to new ways for combating cancer drug resistance.
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Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, Waltham, MA 02454, USA
| | - Jie Zhou
- Department of Chemistry, Brandeis University, Waltham, MA 02454, USA
| | - Huainin Wang
- Department of Chemistry, Brandeis University, Waltham, MA 02454, USA
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, Waltham, MA 02454, USA
| | - Yi Kuang
- Department of Chemistry, Brandeis University, Waltham, MA 02454, USA
| | - Wu Zeng
- The Heller School for Social Policy and Management, Brandeis University, Waltham, MA 02454, USA
| | - Zhimou Yang
- The College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Bing Xu
- Department of Chemistry, Brandeis University, Waltham, MA 02454, USA
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Daw S, Chatterjee R, Law A, Law S. Analysis of hematopathology and alteration of JAK1/STAT3/STAT5 signaling axis in experimental myelodysplastic syndrome. Chem Biol Interact 2016; 260:176-185. [PMID: 27725143 DOI: 10.1016/j.cbi.2016.10.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/04/2016] [Accepted: 10/06/2016] [Indexed: 11/27/2022]
Abstract
Hematological disorders like myelodysplastic syndrome (MDS) may arise due to cumulative dysregulation of various signalling pathways controlling proliferation, differentiation, maturation and apoptosis of bone marrow cells. This devastating bone marrow condition can be due to consequential abnormalities in haematopoiesis as well as its supportive microenvironment. Although mutations related to JAK/STAT pathway are common in myeloproliferative neoplasms, further studies are required to fully explore the myelodysplastic scenario regarding the concerned pathway. In this study, we have investigated the JAK-STAT signalling pathway which inevitably plays a crucial role in haematopoiesis. MDS was mimicked in a mouse model with an induction of ENU in adult mice. The bone marrow of the control and MDS groups of animals were subjected to a variety of tests, including cell morphology study in peripheral blood and bone marrow, cytochemistry and histochemistry of bone marrow smears, karyotyping and flowcytometric expression analysis of the phosphorylated forms of proteins like JAK1, STAT3 and STAT5 (denoted as pJAK1, pSTAT3 and pSTAT5) and the phenotypic expression of proteins like CD45 and CD71. The results revealed that the morphology of the blood and bone marrow cells were dysplastic compared to the affected blast populations of different lineages. The expression of common leucocyte antigen CD45 was less in comparison to the expression of transferrin receptor CD71 which was increased in the ENU induced MDS mouse model. Moreover, we have observed an upregulated expression of JAK1 followed by STAT5. Therefore, we can conclude that downregulation of CD45 may have helped in the upregulation of JAK-STAT signaling and CD71 expression. This aberrant signaling may be among one of the activated signaling axes that lead to affected hematopoietic lineages in Myelodysplastic syndrome.
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Affiliation(s)
- Suchismita Daw
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata 700073, West Bengal, India
| | - Ritam Chatterjee
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata 700073, West Bengal, India
| | - Aditya Law
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata 700073, West Bengal, India
| | - Sujata Law
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata 700073, West Bengal, India.
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Zhou J, Du X, Berciu C, He H, Shi J, Nicastro D, Xu B. Enzyme-Instructed Self-Assembly for Spatiotemporal Profiling of the Activities of Alkaline Phosphatases on Live Cells. Chem 2016; 1:246-263. [PMID: 28393126 DOI: 10.1016/j.chempr.2016.07.003] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Alkaline phosphatase (ALP), an ectoenzyme, plays important roles in biology. But there is no activity probes for imaging ALPs in live cell environment due to the diffusion and cytotoxicity of current probes. Here we report the profiling of the activities of ALPs on live cells by enzyme-instructed self-assembly (EISA) of a D-peptidic derivative that forms fluorescent, non-diffusive nanofibrils. Our study reveals the significantly higher activities of ALP on cancer cells than on stromal cells in their co-culture and shows an inherent and dynamic difference in ALP activities between drug sensitive and resistant cancer cells or between cancer cells with and without hormonal stimulation. Being complementary to genomic profiling of cells, EISA, as a reaction-diffusion controlled process, achieves high spatiotemporal resolution for profiling activities of ALPs of live cells at single cell level. The activity probes of ALP contribute to understanding the reversible phosphorylation/dephosphorylation in the extracellular domains that is an emerging frontier in biomedicine.
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Affiliation(s)
- Jie Zhou
- Department of Chemistry, Brandeis University, Waltham, MA 02453, USA
| | - Xuewen Du
- Department of Chemistry, Brandeis University, Waltham, MA 02453, USA
| | - Cristina Berciu
- Department of Biology, Brandeis University, Waltham, MA 02453, USA
| | - Hongjian He
- Department of Chemistry, Brandeis University, Waltham, MA 02453, USA
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, Waltham, MA 02453, USA
| | | | - Bing Xu
- Department of Chemistry, Brandeis University, Waltham, MA 02453, USA
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Xanthine Oxidase-Derived ROS Display a Biphasic Effect on Endothelial Cells Adhesion and FAK Phosphorylation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9346242. [PMID: 27528888 PMCID: PMC4978831 DOI: 10.1155/2016/9346242] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/21/2016] [Accepted: 06/29/2016] [Indexed: 11/17/2022]
Abstract
In pathological situations such as ischemia-reperfusion and acute respiratory distress syndrome, reactive oxygen species (ROS) are produced by different systems which are involved in endothelial cells injury, ultimately leading to severe organ dysfunctions. The aim of this work was to study the effect of ROS produced by hypoxanthine-xanthine oxidase (Hx-XO) on the adhesion of human umbilical vein endothelial cells (HUVEC) and on the signaling pathways involved. Results show that Hx-XO-derived ROS induced an increase in HUVEC adhesion in the early stages of the process (less than 30 min), followed by a decrease in adhesion in the later stages of the process. Interestingly, Hx-XO-derived ROS induced the same biphasic effect on the phosphorylation of the focal adhesion kinase (FAK), a nonreceptor tyrosine kinase critical for cell adhesion, but not on ERK1/2 phosphorylation. The biphasic effect was not seen with ERK1/2 where a decrease in phosphorylation only was observed. Wortmannin, a PI3-kinase inhibitor, inhibited ROS-induced cell adhesion and FAK phosphorylation. Orthovanadate, a protein tyrosine phosphatase inhibitor, and Resveratrol (Resv), an antioxidant agent, protected FAK and ERK1/2 from dephosphorylation and HUVEC from ROS-induced loss of adhesion. This study shows that ROS could have both stimulatory and inhibitory effects on HUVEC adhesion and FAK phosphorylation and suggests that PI3-kinase and tyrosine phosphatase control these effects.
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Ali MY, Jannat S, Jung HA, Jeong HO, Chung HY, Choi JS. Coumarins from Angelica decursiva inhibit α-glucosidase activity and protein tyrosine phosphatase 1B. Chem Biol Interact 2016; 252:93-101. [DOI: 10.1016/j.cbi.2016.04.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/16/2016] [Accepted: 04/11/2016] [Indexed: 11/24/2022]
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37
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Huang H, Wang S, Gui J, Shen H. A study to identify and characterize the stem/progenitor cell in rabbit meniscus. Cytotechnology 2016; 68:2083-103. [PMID: 26820973 DOI: 10.1007/s10616-016-9949-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 01/18/2016] [Indexed: 12/27/2022] Open
Abstract
The repair of meniscus in the avascular zone remains a great challenge, largely owing to their limited healing capacity. Stem cells based tissue engineering provides a promising treatment option for damaged meniscus because of their multiple differentiation potential. We hypothesized that meniscus-derived stromal cells (MMSCs) may be present in meniscal tissue, and if their pluripotency and character can be established, they may play a role in meniscal healing. To test our hypothesis, we isolated MMSCs, bone marrow-derived stromal cells (BMSCs) and fibrochondrocytes from rabbits. In order to avoid bone marrow mesenchymal stromal cell contamination, the parameniscal tissues and vascular zone of meniscus were removed. The characters of these three types of cells were identified by evaluating morphology, colony formation, proliferation, immunocytochemistry and multi-differentiation. Moreover, a wound in the center of rabbit meniscus was created and used to analyze the effect of BMSCs and MMSCs on wounded meniscus healing. BMSCs & MMSCs expressed the stem cell markers SSEA-4, Nanog, nucleostemin and STRO-1, while fibrochondrocytes expressed none of these markers. Morphologically, MMSCs displayed smaller cell bodies and larger nuclei than ordinary fibrochondrocytes. Moreover, it was certified that MMSCs and BMSCs were all able to differentiate into adipocytes, osteocytes, and chondrocytes in vitro. However, more cartilage formation was found in wounded meniscus filled with MMSCs than that filled with BMSCs. We showed that rabbit menisci harbor the unique cell population MMSCs that has universal stem cell characteristics and posses a tendency to differentiate into chondrocytes. Future research should investigate the mechanobiology of MMSCs and explore the possibility of using MMSCs to more effectively repair or regenerate injured meniscus.
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Affiliation(s)
- He Huang
- Department of Orthopaedic Surgery, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, Jiangsu, China
| | - Shukui Wang
- Central Laboratory, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
| | - Jianchao Gui
- Department of Orthopaedic Surgery, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, Jiangsu, China
| | - Haiqi Shen
- Department of Orthopaedic Surgery, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, Jiangsu, China.
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38
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Alonso A, Pulido R. The extended human PTPome: a growing tyrosine phosphatase family. FEBS J 2015; 283:1404-29. [PMID: 26573778 DOI: 10.1111/febs.13600] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/02/2015] [Accepted: 11/13/2015] [Indexed: 12/13/2022]
Abstract
Tyr phosphatases are, by definition, enzymes that dephosphorylate phospho-Tyr (pTyr) from proteins. This activity is found in several structurally diverse protein families, including the protein Tyr phosphatase (PTP), arsenate reductase, rhodanese, haloacid dehalogenase (HAD) and His phosphatase (HP) families. Most of these families include members with substrate specificity for non-pTyr substrates, such as phospho-Ser/phospho-Thr, phosphoinositides, phosphorylated carbohydrates, mRNAs, or inorganic moieties. A Cys is essential for catalysis in PTPs, rhodanese and arsenate reductase enzymes, whereas this work is performed by an Asp in HAD phosphatases and by a His in HPs, via a catalytic mechanism shared by all of the different families. The category that contains most Tyr phosphatases is the PTP family, which, although it received its name from this activity, includes Ser, Thr, inositide, carbohydrate and RNA phosphatases, as well as some inactive pseudophosphatase proteins. Here, we propose an extended collection of human Tyr phosphatases, which we call the extended human PTPome. The addition of new members (SACs, paladin, INPP4s, TMEM55s, SSU72, and acid phosphatases) to the currently categorized PTP group of enzymes means that the extended human PTPome contains up to 125 proteins, of which ~ 40 are selective for pTyr. We set criteria to ascribe proteins to the extended PTPome, and summarize the more important features of the new PTPome members in the context of their phosphatase activity and their relationship with human disease.
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Affiliation(s)
- Andrés Alonso
- Instituto de Biología y Genética Molecular (IBGM), CSIC-Universidad de Valladolid, Valladolid, Spain
| | - Rafael Pulido
- Biocruces Health Research Institute, Barakaldo, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
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39
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Wang Y, Yuk HJ, Kim JY, Kim DW, Song YH, Tan XF, Curtis-Long MJ, Park KH. Novel chromenedione derivatives displaying inhibition of protein tyrosine phosphatase 1B (PTP1B) from Flemingia philippinensis. Bioorg Med Chem Lett 2015; 26:318-321. [PMID: 26704263 DOI: 10.1016/j.bmcl.2015.12.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 12/04/2015] [Accepted: 12/08/2015] [Indexed: 11/25/2022]
Abstract
Protein tyrosine phosphatase 1B (PTP1B) is an important target to treat obesity and diabetes due to its key roles in insulin and leptin signaling. The MeOH extracts of the root bark of Flemingia philippinensis yielded eight inhibitory molecules (1-8) capable of targeting PTP1B. Three of them were identified to be novel compounds, philippin A (1), philippin B (2), and philippin C (3) which have a rare 3-phenylpropanoyl chromenedione skeleton. The other compounds (4-8) were known prenylated isoflavones. All compounds (1-8) inhibited PTP1B in a dose dependent manner with IC50s ranging between 2.4 and 29.4μM. The most potent compound emerged to be prenylated isoflavone 5 (IC50=2.4μM). In kinetic studies, chromenedione derivatives (1-3) emerged to be reversible, competitive inhibitors, whereas prenylated isoflavones (5-8) were noncompetitive inhibitors.
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Affiliation(s)
- Yan Wang
- College of Food and Biological Engineering, Qiqihar University, Qiqihar 161006, China
| | - Heung Joo Yuk
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Jeong Yoon Kim
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Dae Wook Kim
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Yeong Hun Song
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Xue Fei Tan
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Marcus J Curtis-Long
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States
| | - Ki Hun Park
- Division of Applied Life Science (BK21 Plus), IALS, Gyeongsang National University, Jinju 660-701, Republic of Korea.
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40
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Seo H, Cho S. PTP Inhibitor V Inhibits Dual-specificity Phosphatase 22 (DUSP22) Activity. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Huiyun Seo
- College of Pharmacy; Chung-Ang University; Seoul 156-756 Republic of Korea
| | - Sayeon Cho
- College of Pharmacy; Chung-Ang University; Seoul 156-756 Republic of Korea
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41
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Ubiquitination switches EphA2 vesicular traffic from a continuous safeguard to a finite signalling mode. Nat Commun 2015; 6:8047. [PMID: 26292967 PMCID: PMC4560775 DOI: 10.1038/ncomms9047] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 07/11/2015] [Indexed: 01/15/2023] Open
Abstract
Autocatalytic phosphorylation of receptor tyrosine kinases (RTKs) enables diverse, context-dependent responses to extracellular signals but comes at the price of autonomous, ligand-independent activation. Using a conformational biosensor that reports on the kinase activity of the cell guidance ephrin receptor type-A (EphA2) in living cells, we observe that autonomous EphA2 activation is suppressed by vesicular recycling and dephosphorylation by protein tyrosine phosphatases 1B (PTP1B) near the pericentriolar recycling endosome. This spatial segregation of catalytically superior PTPs from RTKs at the plasma membrane is essential to preserve ligand responsiveness. Ligand-induced clustering, on the other hand, promotes phosphorylation of a c-Cbl docking site and ubiquitination of the receptor, thereby redirecting it to the late endosome/lysosome. We show that this switch from cyclic to unidirectional receptor trafficking converts a continuous suppressive safeguard mechanism into a transient ligand-responsive signalling mode.
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42
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Chen PJ, Cai SP, Huang C, Meng XM, Li J. Protein tyrosine phosphatase 1B (PTP1B): A key regulator and therapeutic target in liver diseases. Toxicology 2015; 337:10-20. [PMID: 26299811 DOI: 10.1016/j.tox.2015.08.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/12/2015] [Accepted: 08/15/2015] [Indexed: 12/11/2022]
Abstract
Phosphorylation of tyrosine residues within proteins, which is controlled by the reciprocal action of protein tyrosine kinases and protein tyrosine phosphatases, plays a key role in regulating almost all physiological responses. Therefore, it comes as no surprise that once the balance of tyrosine phosphorylation is disturbed, drastic effects can occur. Protein tyrosine phosphatase 1B (PTP1B), a classical non-transmembrane tyrosine phosphatase, is a pivotal regulator and promising drug target in type 2 diabetes and obesity. Recently it has received renewed attention in liver diseases and represents an intriguing opportunity as a drug target by modulating hepatocyte death and survival, hepatic lipogenesis and so on. Here, the multiple roles of PTP1B in liver diseases will be presented, with respect to liver regeneration, drug-induced liver disease, non-alcoholic fatty liver disease (NAFLD) and hepatocellular carcinoma.
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Affiliation(s)
- Pei-Jie Chen
- School of Pharmacy, Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Shuang-Peng Cai
- School of Pharmacy, Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- School of Pharmacy, Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Xiao-Ming Meng
- School of Pharmacy, Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Jun Li
- School of Pharmacy, Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China.
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43
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Shah MR, Ishtiaq, Hizbullah SM, Habtemariam S, Zarrelli A, Muhammad A, Collina S, Khan I. Protein tyrosine phosphatase 1B inhibitors isolated from Artemisia roxburghiana. J Enzyme Inhib Med Chem 2015; 31:563-7. [DOI: 10.3109/14756366.2015.1047358] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Muhammad Raza Shah
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan,
| | - Ishtiaq
- Department of Chemistry, Hazara University, Mansehra, Pakistan,
| | | | - Solomon Habtemariam
- Pharmacognosy Research Laboratories, Medway School of Science, University of Greenwich, Kent, UK,
| | - Armando Zarrelli
- Department of Chemical Sciences, University of Naples “Federico II”, Naples, Italy,
| | - Akhtar Muhammad
- Department of Chemistry, University of Karachi, Karachi, Pakistan, and
| | - Simona Collina
- Department of Pharmacy, University of Pavia, Pavia, Italy
| | - Inamulllah Khan
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan,
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44
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Fisher GJ, Sachs DL, Voorhees JJ. Ageing: collagenase-mediated collagen fragmentation as a rejuvenation target. Br J Dermatol 2015; 171:446-9. [PMID: 25234059 DOI: 10.1111/bjd.13267] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G J Fisher
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, 48109, U.S.A.
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45
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Protein Tyrosine Phosphatase 1B Inhibitors from the Roots of Cudrania tricuspidata. Molecules 2015; 20:11173-83. [PMID: 26091075 PMCID: PMC6272669 DOI: 10.3390/molecules200611173] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 06/11/2015] [Accepted: 06/12/2015] [Indexed: 11/16/2022] Open
Abstract
A chemical investigation of the methanol extract from the roots of Cudrania tricuspidata resulted in the isolation of 16 compounds, including prenylated xanthones 1-9 and flavonoids 10-16. Their structures were identified by NMR spectroscopy and mass spectrometry and comparisons with published data. Compounds 1-9 and 13-16 significantly inhibited PTP1B activity in a dose dependent manner, with IC50 values ranging from 1.9-13.6 μM. Prenylated xanthones showed stronger PTP1B inhibitory effects than the flavonoids, suggesting that they may be promising targets for the future discovery of novel PTP1B inhibitors. Furthermore, kinetic analyses indicated that compounds 1 and 13 inhibited PTP1B in a noncompetitive manner; therefore, they may be potential lead compounds in the development of anti-obesity and -diabetic agents.
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46
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Han YR, Ali MY, Woo MH, Jung HA, Choi JS. Anti-Diabetic and Anti-Inflammatory Potential of the Edible Brown Alga H
izikia Fusiformis. J Food Biochem 2015. [DOI: 10.1111/jfbc.12138] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yu Ran Han
- Department of Food and Life Science; Pukyong National University; Busan 608-737 South Korea
| | - Md. Yousof Ali
- Department of Food and Life Science; Pukyong National University; Busan 608-737 South Korea
| | - Mi-Hee Woo
- College of Pharmacy; Catholic University of Daegu; Gyeongsan 712-702 South Korea
| | - Hyun Ah Jung
- Department of Food Science and Human Nutrition; Chonbuk National University; Jeonju 561-756 South Korea
| | - Jae Sue Choi
- Department of Food and Life Science; Pukyong National University; Busan 608-737 South Korea
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47
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Murphy NP, Lampe KJ. Mimicking biological phenomena in hydrogel-based biomaterials to promote dynamic cellular responses. J Mater Chem B 2015; 3:7867-7880. [DOI: 10.1039/c5tb01045d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Novel methods to endow cell-responsiveness into hydrogels are explored and successful work is summarized.
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Affiliation(s)
- Nicholas P. Murphy
- Department of Chemical Engineering
- University of Virginia
- Charlottesville
- USA
| | - Kyle J. Lampe
- Department of Chemical Engineering
- University of Virginia
- Charlottesville
- USA
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48
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Camacho-Soto K, Castillo-Montoya J, Tye B, Ogunleye LO, Ghosh I. Small molecule gated split-tyrosine phosphatases and orthogonal split-tyrosine kinases. J Am Chem Soc 2014; 136:17078-86. [PMID: 25409264 DOI: 10.1021/ja5080745] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Protein kinases phosphorylate client proteins, while protein phosphatases catalyze their dephosphorylation and thereby in concert exert reversible control over numerous signal transduction pathways. We have recently reported the design and validation of split-protein kinases that can be conditionally activated by an added small molecule chemical inducer of dimerization (CID), rapamycin. Herein, we provide the rational design and validation of three split-tyrosine phosphatases (PTPs) attached to FKBP and FRB, where catalytic activity can be modulated with rapamycin. We further demonstrate that the orthogonal CIDs, abscisic acid and gibberellic acid, can be used to impart control over the activity of split-tyrosine kinases (PTKs). Finally, we demonstrate that designed split-phosphatases and split-kinases can be activated by orthogonal CIDs in mammalian cells. In sum, we provide a methodology that allows for post-translational orthogonal small molecule control over the activity of user defined split-PTKs and split-PTPs. This methodology has the long-term potential for both interrogating and redesigning phosphorylation dependent signaling pathways.
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Affiliation(s)
- Karla Camacho-Soto
- Department of Chemistry and Biochemistry, University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721, United States
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49
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Andrews LD, Zalatan JG, Herschlag D. Probing the Origins of Catalytic Discrimination between Phosphate and Sulfate Monoester Hydrolysis: Comparative Analysis of Alkaline Phosphatase and Protein Tyrosine Phosphatases. Biochemistry 2014; 53:6811-9. [PMID: 25299936 PMCID: PMC4222534 DOI: 10.1021/bi500765p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Catalytic promiscuity, the ability
of enzymes to catalyze multiple
reactions, provides an opportunity to gain a deeper understanding
of the origins of catalysis and substrate specificity. Alkaline phosphatase
(AP) catalyzes both phosphate and sulfate monoester hydrolysis reactions
with a ∼1010-fold preference for phosphate monoester
hydrolysis, despite the similarity between these reactions. The preponderance
of formal positive charge in the AP active site, particularly from
three divalent metal ions, was proposed to be responsible for this
preference by providing stronger electrostatic interactions with the
more negatively charged phosphoryl group versus the sulfuryl group.
To test whether positively charged metal ions are required to achieve
a high preference for the phosphate monoester hydrolysis reaction,
the catalytic preference of three protein tyrosine phosphatases (PTPs),
which do not contain metal ions, were measured. Their preferences
ranged from 5 × 106 to 7 × 107, lower
than that for AP but still substantial, indicating that metal ions
and a high preponderance of formal positive charge within the active
site are not required to achieve a strong catalytic preference for
phosphate monoester over sulfate monoester hydrolysis. The observed
ionic strength dependences of kcat/KM values for phosphate and sulfate monoester
hydrolysis are steeper for the more highly charged phosphate ester
with both AP and the PTP Stp1, following the dependence expected based
on the charge difference of these two substrates. However, the dependences
for AP were not greater than those of Stp1 and were rather shallow
for both enzymes. These results suggest that overall electrostatics
from formal positive charge within the active site is not the major
driving force in distinguishing between these reactions and that substantial
discrimination can be attained without metal ions. Thus, local properties
of the active site, presumably including multiple positioned dipolar
hydrogen bond donors within the active site, dominate in defining
this reaction specificity.
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Affiliation(s)
- Logan D. Andrews
- Department of Chemical and Systems
Biology, ‡Department of Chemistry, and §Department of
Biochemistry, Stanford University, Stanford, California 94305-5307, United States
| | - Jesse G. Zalatan
- Department of Chemical and Systems
Biology, ‡Department of Chemistry, and §Department of
Biochemistry, Stanford University, Stanford, California 94305-5307, United States
| | - Daniel Herschlag
- Department of Chemical and Systems
Biology, ‡Department of Chemistry, and §Department of
Biochemistry, Stanford University, Stanford, California 94305-5307, United States
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50
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Stuelsatz P, Shearer A, Li Y, Muir LA, Ieronimakis N, Shen QW, Kirillova I, Yablonka-Reuveni Z. Extraocular muscle satellite cells are high performance myo-engines retaining efficient regenerative capacity in dystrophin deficiency. Dev Biol 2014; 397:31-44. [PMID: 25236433 DOI: 10.1016/j.ydbio.2014.08.035] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/29/2014] [Accepted: 08/30/2014] [Indexed: 12/18/2022]
Abstract
Extraocular muscles (EOMs) are highly specialized skeletal muscles that originate from the head mesoderm and control eye movements. EOMs are uniquely spared in Duchenne muscular dystrophy and animal models of dystrophin deficiency. Specific traits of myogenic progenitors may be determinants of this preferential sparing, but very little is known about the myogenic cells in this muscle group. While satellite cells (SCs) have long been recognized as the main source of myogenic cells in adult muscle, most of the knowledge about these cells comes from the prototypic limb muscles. In this study, we show that EOMs, regardless of their distinctive Pax3-negative lineage origin, harbor SCs that share a common signature (Pax7(+), Ki67(-), Nestin-GFP(+), Myf5(nLacZ+), MyoD-positive lineage origin) with their limb and diaphragm somite-derived counterparts, but are remarkably endowed with a high proliferative potential as revealed in cell culture assays. Specifically, we demonstrate that in adult as well as in aging mice, EOM SCs possess a superior expansion capacity, contributing significantly more proliferating, differentiating and renewal progeny than their limb and diaphragm counterparts. These robust growth and renewal properties are maintained by EOM SCs isolated from dystrophin-null (mdx) mice, while SCs from muscles affected by dystrophin deficiency (i.e., limb and diaphragm) expand poorly in vitro. EOM SCs also retain higher performance in cell transplantation assays in which donor cells were engrafted into host mdx limb muscle. Collectively, our study provides a comprehensive picture of EOM myogenic progenitors, showing that while these cells share common hallmarks with the prototypic SCs in somite-derived muscles, they distinctively feature robust growth and renewal capacities that warrant the title of high performance myo-engines and promote consideration of their properties for developing new approaches in cell-based therapy to combat skeletal muscle wasting.
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Affiliation(s)
- Pascal Stuelsatz
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA
| | - Andrew Shearer
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA
| | - Yunfei Li
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA
| | - Lindsey A Muir
- Program in Molecular and Cellular Biology and Department of Neurology, University of Washington School of Medicine, Seattle, WA, USA
| | - Nicholas Ieronimakis
- Department of Pathology, University of Washington School of Medicine, Seattle, WA, USA
| | - Qingwu W Shen
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA
| | - Irina Kirillova
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA
| | - Zipora Yablonka-Reuveni
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA.
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