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Schneider C, Spaink H, Alexe G, Dharia NV, Meyer A, Merickel LA, Khalid D, Scheich S, Häupl B, Staudt LM, Oellerich T, Stegmaier K. Targeting the Sodium-Potassium Pump as a Therapeutic Strategy in Acute Myeloid Leukemia. Cancer Res 2024; 84:3354-3370. [PMID: 39024560 DOI: 10.1158/0008-5472.can-23-3560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 05/08/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024]
Abstract
Tissue-specific differences in the expression of paralog genes, which are not essential in most cell types due to the buffering effect of the partner pair, can make for highly selective gene dependencies. To identify selective paralogous targets for acute myeloid leukemia (AML), we integrated the Cancer Dependency Map with numerous datasets characterizing protein-protein interactions, paralog relationships, and gene expression in cancer models. In this study, we identified ATP1B3 as a context-specific, paralog-related dependency in AML. ATP1B3, the β-subunit of the sodium-potassium pump (Na/K-ATP pump), interacts with the α-subunit ATP1A1 to form an essential complex for maintaining cellular homeostasis and membrane potential in all eukaryotic cells. When ATP1B3's paralog ATP1B1 is poorly expressed, elimination of ATP1B3 leads to the destabilization of the Na/K-ATP pump. ATP1B1 expression is regulated through epigenetic silencing in hematopoietic lineage cells through histone and DNA methylation in the promoter region. Loss of ATP1B3 in AML cells induced cell death in vitro and reduced leukemia burden in vivo, which could be rescued by stabilizing ATP1A1 through overexpression of ATP1B1. Thus, ATP1B3 is a potential therapeutic target for AML and other hematologic malignancies with low expression of ATP1B1. Significance: ATP1B3 is a lethal selective paralog dependency in acute myeloid leukemia that can be eliminated to destabilize the sodium-potassium pump, inducing cell death.
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Affiliation(s)
- Constanze Schneider
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts
- Harvard Medical School, Boston, Massachusetts
| | - Hermes Spaink
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Gabriela Alexe
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts
- Harvard Medical School, Boston, Massachusetts
| | - Neekesh V Dharia
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts
- Division of Hematology/Oncology, Boston Children's Hospital, Boston, Massachusetts
| | - Ashleigh Meyer
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Lucy A Merickel
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Delan Khalid
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Sebastian Scheich
- Lymphoid Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
- Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
- Frankfurt Cancer Institute, Goethe University, Frankfurt am Main, Germany
- German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany
- University Cancer Center (UCT) Frankfurt, University Hospital, Goethe University, Frankfurt am Main, Germany
| | - Björn Häupl
- Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
- Frankfurt Cancer Institute, Goethe University, Frankfurt am Main, Germany
- German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany
| | - Louis M Staudt
- Lymphoid Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Thomas Oellerich
- Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
- Frankfurt Cancer Institute, Goethe University, Frankfurt am Main, Germany
- German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany
| | - Kimberly Stegmaier
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts
- Harvard Medical School, Boston, Massachusetts
- Division of Hematology/Oncology, Boston Children's Hospital, Boston, Massachusetts
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2
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Liu J, Schiralli-Lester GM, Norman R, Dean DA. Upregulation of alveolar fluid clearance is not sufficient for Na +,K +-ATPase β subunit-mediated gene therapy of LPS-induced acute lung injury in mice. Sci Rep 2023; 13:6792. [PMID: 37100889 PMCID: PMC10130817 DOI: 10.1038/s41598-023-33985-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 04/21/2023] [Indexed: 04/28/2023] Open
Abstract
Acute Lung Injury/Acute Respiratory Distress Syndrome (ALI/ARDS) is characterized by diffuse alveolar damage and significant edema accumulation, which is associated with impaired alveolar fluid clearance (AFC) and alveolar-capillary barrier disruption, leading to acute respiratory failure. Our previous data showed that electroporation-mediated gene delivery of the Na+, K+-ATPase β1 subunit not only increased AFC, but also restored alveolar barrier function through upregulation of tight junction proteins, leading to treatment of LPS-induced ALI in mice. More importantly, our recent publication showed that gene delivery of MRCKα, the downstream effector of β1 subunit-mediated signaling towards upregulation of adhesive junctions and epithelial and endothelial barrier integrity, also provided therapeutic potential for ARDS treatment in vivo but without necessarily accelerating AFC, indicating that for ARDS treatment, improving alveolar capillary barrier function may be of more benefit than improving fluid clearance. In the present study, we investigated the therapeutical potential of β2 and β3 subunits, the other two β isoforms of Na+, K+-ATPase, for LPS-induced ALI. We found that gene transfer of either the β1, β2, or β3 subunits significantly increased AFC compared to the basal level in naïve animals and each gave similar increased AFC to each other. However, unlike that of the β1 subunit, gene transfer of the β2 or β3 subunit into pre-injured animal lungs failed to show the beneficial effects of attenuated histological damage, neutrophil infiltration, overall lung edema, or increased lung permeability, indicating that β2 or β3 gene delivery could not treat LPS induced lung injury. Further, while β1 gene transfer increased levels of key tight junction proteins in the lungs of injured mice, that of either the β2 or β3 subunit had no effect on levels of tight junction proteins. Taken together, this strongly suggests that restoration of alveolar-capillary barrier function alone may be of equal or even more benefit than improving AFC for ALI/ARDS treatment.
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Affiliation(s)
- Jing Liu
- Department of Pediatrics, University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
- Department of Pharmacology and Physiology, University of Rochester, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Gillian M Schiralli-Lester
- Department of Pediatrics, University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
| | - Rosemary Norman
- Department of Pediatrics, University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
| | - David A Dean
- Department of Pediatrics, University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA.
- Department of Pharmacology and Physiology, University of Rochester, 601 Elmwood Avenue, Rochester, NY, 14642, USA.
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3
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Chakraborty M, Jandhyam H, Basak SK, Das S, Alone DP. Intergenic variants, rs1200114 and rs1200108 are genetically associated along with a decreased ATP1B1 expression in Fuchs Endothelial Corneal Dystrophy. Exp Eye Res 2023; 228:109403. [PMID: 36736852 DOI: 10.1016/j.exer.2023.109403] [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: 10/01/2022] [Revised: 01/23/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023]
Abstract
Fuchs endothelial corneal dystrophy (FECD) is an age-related, bilateral corneal condition, characterized by apoptosis of the terminally differentiated endothelial cells. A genome-wide association study (GWAS) conducted in the European population in 2017, identified a new single nucleotide polymorphism (SNP), rs1200114 in the intergenic region between long intergenic non-protein coding RNA 970 (LINC00970) and ATPase Na+/K+ transporting subunit beta 1 (ATP1B1). The major focus of the current study is to understand the genetic association of this intergenic variant, rs1200114 with FECD in the Indian population. Sanger sequencing followed by statistical analysis indicated a significant difference in the allelic frequency between controls and cases (P = 0.01) with the minor allele 'G' of rs1200114 imparting a 1.64 fold increased risk for the disease. Luciferase reporter assay revealed no significant difference in the luciferase activity between allele 'A' and 'G' of rs1200114. However, quantitative RT-PCR assay revealed lower expression of ATP1B1 in FECD subjects compared with controls (P = 0.007). Therefore, to find whether another nearby SNP imparts regulatory effect, tag SNP association analysis was carried out; which revealed a significant association of another SNP, rs1200108, present in the intergenic region between LINC00970 and ATP1B1 with FECD (P = 0.009). The protective allele 'A' of rs1200108 displayed reduced reporter activity as opposed to the risk allele 'G' (P = 0.014). Furthermore, haplotype 'A-A' of rs1200108 - rs1200114 was present at a higher frequency in control subjects, suggesting it as a protective haplotype. Altogether, this study inferred the genetic association of rs1200114 and rs1200108 along with the decreased expression of ATP1B1 related to FECD pathogenesis in the Indian population.
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Affiliation(s)
- Maynak Chakraborty
- School of Biological Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, P.O. Bhimpur-Padanpur, Jatni, Khurda, Odisha, 752050, India; Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Harithalakshmi Jandhyam
- School of Biological Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, P.O. Bhimpur-Padanpur, Jatni, Khurda, Odisha, 752050, India; Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | | | - Sujata Das
- LV Prasad Eye Institute, Bhubaneswar, Odisha, 751024, India
| | - Debasmita Pankaj Alone
- School of Biological Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, P.O. Bhimpur-Padanpur, Jatni, Khurda, Odisha, 752050, India; Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India.
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4
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Jin C, Lee B, Shen L, Long Q. Integrating multi-omics summary data using a Mendelian randomization framework. Brief Bioinform 2022; 23:bbac376. [PMID: 36094096 PMCID: PMC9677504 DOI: 10.1093/bib/bbac376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/29/2022] [Accepted: 08/09/2022] [Indexed: 12/14/2022] Open
Abstract
Mendelian randomization is a versatile tool to identify the possible causal relationship between an omics biomarker and disease outcome using genetic variants as instrumental variables. A key theme is the prioritization of genes whose omics readouts can be used as predictors of the disease outcome through analyzing GWAS and QTL summary data. However, there is a dearth of study of the best practice in probing the effects of multiple -omics biomarkers annotated to the same gene of interest. To bridge this gap, we propose powerful combination tests that integrate multiple correlated $P$-values without assuming the dependence structure between the exposures. Our extensive simulation experiments demonstrate the superiority of our proposed approach compared with existing methods that are adapted to the setting of our interest. The top hits of the analyses of multi-omics Alzheimer's disease datasets include genes ABCA7 and ATP1B1.
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Affiliation(s)
- Chong Jin
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Brian Lee
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Li Shen
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Qi Long
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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5
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Roa-Velázquez D, Xoconostle-Cázares B, Benítez-Cardoza CG, Ortega-López J, Shoshani L, Morales-Ríos E, Gallardo-Hernández S. Expression, purification, and refolding of the recombinant extracellular domain β 1-subunit of the dog Na +/K +-ATPase of the epithelial cells. Protein Expr Purif 2022; 200:106167. [PMID: 36057422 DOI: 10.1016/j.pep.2022.106167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/25/2022]
Abstract
The β1-subunit of the Na+/K+-ATPase is a cell membrane protein, beyond its classic functions, it is also a cell adhesion molecule. β1-subunits on the lateral membrane of dog kidney epithelial cells trans-interact with β1-subunits from another neighboring cells. The β-β interaction is essential for the formation and stabilization of intercellular junctions. Previous studies on site-directed mutagenesis and in silico revealed that the interaction interface involves residues 198-207 and 221-229. However, it is necessary to report the interaction interface at the structural level experimentally. Here, we describe the successful cloning, overexpression in E. coli, and purification of the extracellular domain of the β1-subunit from inclusion bodies. Experimental characterization by size exclusion chromatography and DLS indicated similar hydrodynamic properties of the protein refolded. Structural analysis by circular dichroism and Raman spectroscopy revealed the secondary structures in the folded protein of type β-sheet, α-helix, random coil, and turn. We also performed β1-β1 interaction assays with the recombinant protein, showing dimers' formation (6xHisβ1-β1). Given our results, the recombinant extracellular domain of the β1-subunit is highly similar to the native protein, therefore the current work in our laboratory aims to characterize at the atomic level the interaction interface between EDβ1.
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Affiliation(s)
- Daniela Roa-Velázquez
- Programa de Doctorado en Nanociencias y Nanotecnología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México, 07360, Mexico.
| | - Beatriz Xoconostle-Cázares
- Departamento de Bioingeniería y Biotecnología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México, 07360, Mexico.
| | - Claudia G Benítez-Cardoza
- Laboratorio de Investigación Bioquímica, Escuela Nacional de Medicina y Homeopatía-Instituto Politécnico Nacional, Guillermo Massieu Helguera 239, Ciudad de México, 07320, Mexico.
| | - Jaime Ortega-López
- Departamento de Bioingeniería y Biotecnología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México, 07360, Mexico.
| | - Liora Shoshani
- Departamento de Fisiología Biofísica y Neurociencias, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México, 07360, Mexico.
| | - Edgar Morales-Ríos
- Departamento de Bioquímica, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México, 07360, Mexico.
| | - Salvador Gallardo-Hernández
- Departamento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México, 07360, Mexico.
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6
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Roldán ML, Ramírez-Salinas GL, Martinez-Archundia M, Cuellar-Perez F, Vilchis-Nestor CA, Cancino-Diaz JC, Shoshani L. The β2-Subunit (AMOG) of Human Na+, K+-ATPase Is a Homophilic Adhesion Molecule. Int J Mol Sci 2022; 23:ijms23147753. [PMID: 35887102 PMCID: PMC9322774 DOI: 10.3390/ijms23147753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/05/2022] [Accepted: 07/05/2022] [Indexed: 12/10/2022] Open
Abstract
The β2 subunit of Na+, K+-ATPase was originally identified as the adhesion molecule on glia (AMOG) that mediates the adhesion of astrocytes to neurons in the central nervous system and that is implicated in the regulation of neurite outgrowth and neuronal migration. While β1 isoform have been shown to trans-interact in a species-specific mode with the β1 subunit on the epithelial neighboring cell, the β2 subunit has been shown to act as a recognition molecule on the glia. Nevertheless, none of the works have identified the binding partner of β2 or described its adhesion mechanism. Until now, the interactions pronounced for β2/AMOG are heterophilic cis-interactions. In the present report we designed experiments that would clarify whether β2 is a cell–cell homophilic adhesion molecule. For this purpose, we performed protein docking analysis, cell–cell aggregation, and protein–protein interaction assays. We observed that the glycosylated extracellular domain of β2/AMOG can make an energetically stable trans-interacting dimer. We show that CHO (Chinese Hamster Ovary) fibroblasts transfected with the human β2 subunit become more adhesive and make large aggregates. The treatment with Tunicamycin in vivo reduced cell aggregation, suggesting the participation of N-glycans in that process. Protein–protein interaction assay in vivo with MDCK (Madin-Darby canine kidney) or CHO cells expressing a recombinant β2 subunit show that the β2 subunits on the cell surface of the transfected cell lines interact with each other. Overall, our results suggest that the human β2 subunit can form trans-dimers between neighboring cells when expressed in non-astrocytic cells, such as fibroblasts (CHO) and epithelial cells (MDCK).
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Affiliation(s)
- María Luisa Roldán
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, 2508 IPN Ave., San Pedro Zacatenco, Ciudad de México 07360, Mexico; (M.L.R.); (F.C.-P.); (C.A.V.-N.)
| | - Gema Lizbeth Ramírez-Salinas
- Department of Immunology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Circuito, Mario de La Cueva S/N, C.U., Coyoacán, Ciudad de México 04510, Mexico;
| | - Marlet Martinez-Archundia
- Laboratorio de Modelado Molecular, Bioinformática y Diseño de Fármacos, Departamento de Posgrado Escuela Superior de Medicina del Instituto Politécnico Nacional, Salvador Díaz Mirón esq. Plan de San Luis S/N, Miguel Hidalgo, Casco de Santo Tomas, Ciudad de México 11340, Mexico;
| | - Francisco Cuellar-Perez
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, 2508 IPN Ave., San Pedro Zacatenco, Ciudad de México 07360, Mexico; (M.L.R.); (F.C.-P.); (C.A.V.-N.)
| | - Claudia Andrea Vilchis-Nestor
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, 2508 IPN Ave., San Pedro Zacatenco, Ciudad de México 07360, Mexico; (M.L.R.); (F.C.-P.); (C.A.V.-N.)
| | - Juan Carlos Cancino-Diaz
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Salvador Díaz Mirón esq. Plan de San Luis S/N, Miguel Hidalgo, Casco de Santo Tomas, Ciudad de México 11340, Mexico;
| | - Liora Shoshani
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, 2508 IPN Ave., San Pedro Zacatenco, Ciudad de México 07360, Mexico; (M.L.R.); (F.C.-P.); (C.A.V.-N.)
- Correspondence: ; Tel.: +52-55-5747-3360
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7
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Fedosova NU, Habeck M, Nissen P. Structure and Function of Na,K-ATPase-The Sodium-Potassium Pump. Compr Physiol 2021; 12:2659-2679. [PMID: 34964112 DOI: 10.1002/cphy.c200018] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Na,K-ATPase is an ubiquitous enzyme actively transporting Na-ions out of the cell in exchange for K-ions, thereby maintaining their concentration gradients across the cell membrane. Since its discovery more than six decades ago the Na-pump has been studied extensively and its vital physiological role in essentially every cell has been established. This article aims at providing an overview of well-established biochemical properties with a focus on Na,K-ATPase isoforms, its transport mechanism and principle conformations, inhibitors, and insights gained from crystal structures. © 2021 American Physiological Society. Compr Physiol 11:1-21, 2021.
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Affiliation(s)
| | - Michael Habeck
- Department of Molecular Biology and Genetics, Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark
| | - Poul Nissen
- Department of Molecular Biology and Genetics, Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark
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8
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The cellular prion protein interacts with and promotes the activity of Na,K-ATPases. PLoS One 2021; 16:e0258682. [PMID: 34847154 PMCID: PMC8631662 DOI: 10.1371/journal.pone.0258682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 10/02/2021] [Indexed: 12/23/2022] Open
Abstract
The prion protein (PrP) is best known for its ability to cause fatal neurodegenerative diseases in humans and animals. Here, we revisited its molecular environment in the brain using a well-developed affinity-capture mass spectrometry workflow that offers robust relative quantitation. The analysis confirmed many previously reported interactions. It also pointed toward a profound enrichment of Na,K-ATPases (NKAs) in proximity to cellular PrP (PrPC). Follow-on work validated the interaction, demonstrated partial co-localization of the ATP1A1 and PrPC, and revealed that cells exposed to cardiac glycoside (CG) inhibitors of NKAs exhibit correlated changes to the steady-state levels of both proteins. Moreover, the presence of PrPC was observed to promote the ion uptake activity of NKAs in a human co-culture paradigm of differentiated neurons and glia cells, and in mouse neuroblastoma cells. Consistent with this finding, changes in the expression of 5’-nucleotidase that manifest in wild-type cells in response to CG exposure can also be observed in untreated PrPC-deficient cells. Finally, the endoproteolytic cleavage of the glial fibrillary acidic protein, a hallmark of late-stage prion disease, can also be induced by CGs, raising the prospect that a loss of NKA activity may contribute to the pathobiology of prion diseases.
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Pan Y, Wang X, He Y, Lin S, Zhu M, Li Y, Wang J, Wang J, Ma X, Xu J, Yang L, Yang G, Huang J, Lu Y, Sheng J. Tumor suppressor ATP4B serve as a promising biomarker for worsening of gastric atrophy and poor differentiation. Gastric Cancer 2021; 24:314-326. [PMID: 33111209 DOI: 10.1007/s10120-020-01128-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/01/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hydrogen/potassium ATPase β (ATP4B) is a proton pump acting an essential role in gastric acid secretion. This study aimed to investigate the diagnostic performance of ATP4B and its biological role in tumor progression in gastric cancer. METHODS The correlations between ATP4B expression level and clinicopathologic parameters, as well as the relevance of ATP4B expression with overall survival were assessed. The functional roles of ATP4B in gastric cancer were verified by gain- and loss-of-function cell models and tumor xenograft models. The possible downstream effects of ATP4B were analyzed by iTRAQ-based quantitative proteomics analysis. RESULTS A dramatic decrease in ATP4B was associated with malignant transformation in gastric mucosa lesions and correlated with poor differentiation. Restoration of ATP4B expression in gastric cancer cells significantly suppressed cell proliferation, cell viability, migration, invasion, tumorigenicity and induced apoptosis, whereas ATP4B silencing exerted the opposite effects. Mechanistically, we found a quality control on mitochondrial metabolism and functions in ATP4B-overexpression GC cells. CONCLUSIONS Our data suggest that decreasing ATP4B is an indicator for gastric mucosa malignant transformation and GC aggressive phenotype and it plays an inhibitory role in gastric cancer as a tumor suppressor via regulating mitochondrial metabolism and apoptosis pathway.
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Affiliation(s)
- Yuanming Pan
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China.,Laboratory of Molecular Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital/Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Xin Wang
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Yuqi He
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China.,The Second School of Clinical Medicine, Southern Medical University, 253 Middle Industrial Avenue, Guangzhou, 510282, Guangdong, China
| | - Shuye Lin
- Laboratory of Molecular Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital/Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China.,College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, 3 Shangyuan Residence, Haidian District, Beijing, 100044, China
| | - Min Zhu
- Laboratory of Molecular Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital/Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Yangjie Li
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China.,The Second School of Clinical Medicine, Southern Medical University, 253 Middle Industrial Avenue, Guangzhou, 510282, Guangdong, China
| | - Jianxun Wang
- School of Basic Medical Sciences, Qingdao University, Qingdao, China.,Center for Regenerative Medicine, Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Jiheng Wang
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Xianzong Ma
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Junfeng Xu
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Lang Yang
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Guibin Yang
- Department of Gastroenterology, Aerospace Clinic Medical College of Peking University, No. 15 Yuanquan Road, Haidian District, Beijing, 100049, China
| | - Jiaqiang Huang
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, 3 Shangyuan Residence, Haidian District, Beijing, 100044, China. .,Cancer and Inflammation Program (CIP), Center for Cancer Research (CCR), National Cancer Institute (NCI), Frederick, MD, USA.
| | - Youyong Lu
- Laboratory of Molecular Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital/Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China.
| | - Jianqiu Sheng
- Department of Gastroenterology, the 7th Medical Center of Chinese PLA General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 100700, China.
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Benkafadar N, Janesick A, Scheibinger M, Ling AH, Jan TA, Heller S. Transcriptomic characterization of dying hair cells in the avian cochlea. Cell Rep 2021; 34:108902. [PMID: 33761357 DOI: 10.1016/j.celrep.2021.108902] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/11/2021] [Accepted: 03/03/2021] [Indexed: 12/28/2022] Open
Abstract
Sensory hair cells are prone to apoptosis caused by various drugs including aminoglycoside antibiotics. In mammals, this vulnerability results in permanent hearing loss because lost hair cells are not regenerated. Conversely, hair cells regenerate in birds, making the avian inner ear an exquisite model for studying ototoxicity and regeneration. Here, we use single-cell RNA sequencing and trajectory analysis on control and dying hair cells after aminoglycoside treatment. Interestingly, the two major subtypes of avian cochlear hair cells, tall and short hair cells, respond differently. Dying short hair cells show a noticeable transient upregulation of many more genes than tall hair cells. The most prominent gene group identified is associated with potassium ion conductances, suggesting distinct physiological differences. Moreover, the dynamic characterization of >15,000 genes expressed in tall and short avian hair cells during their apoptotic demise comprises a resource for further investigations toward mammalian hair cell protection and hair cell regeneration.
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Affiliation(s)
- Nesrine Benkafadar
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Amanda Janesick
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Mirko Scheibinger
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Angela H Ling
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Taha A Jan
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Stefan Heller
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
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11
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Song Q, Zhang Y, Bai H, Zhong L, Li X, Zhao W, Chang G, Chen G. Mineral Element Deposition and Gene Expression across Different Tissues of Cherry Valley Ducks. Animals (Basel) 2021; 11:238. [PMID: 33477854 PMCID: PMC7832843 DOI: 10.3390/ani11010238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 01/14/2023] Open
Abstract
This study was conducted to investigate the deposition of several mineral elements and the mRNA levels of mineral-related genes across different tissues of cherry valley ducks. The contents of magnesium (Mg), potassium (K), zinc (Zn), and selenium (Se) in ducks' breast muscle, thigh muscle, liver, skin, and tibia at the age of 0, 21, 35, 49, and 63 days, respectively, were measured using an atomic fluorescence spectrophotometer, while the mRNA levels of mineral-related genes were detected by qRT-PCR. The results revealed that the dynamics of Mg and K were generally similar in each tissue, with a significant positive correlation (p < 0.05). In the breast muscle, thigh muscle, and liver, the contents of almost all mineral elements reached their peak values (p < 0.05) at the age of 49 to 63 days. Interestingly, the expression of most mineral-related genes was the highest at birth (p < 0.05). In addition, there was a significant negative correlation between the expression of ATP1A1 and the deposition of K (r = -0.957, p < 0.05), and a similar result was found for the expression of ATP8 and the deposition of Zn (r = -0.905, p < 0.05). Taken together, Mg and K could be used as joint indicators for the precise breeding of the high-quality strain of cherry valley ducks, while the age of 49 to 63 days could be used as the reference for the best marketing age. In addition, ATP1A1 and ATP8 could be used as the key genes to detect K and Zn, respectively. Hence, the findings of this study can be used to improve the production and breeding efficiency of high-quality meat ducks.
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Affiliation(s)
| | | | - Hao Bai
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China; (Q.S.); (Y.Z.); (L.Z.); (X.L.); (W.Z.); (G.C.)
| | | | | | | | | | - Guohong Chen
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China; (Q.S.); (Y.Z.); (L.Z.); (X.L.); (W.Z.); (G.C.)
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12
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Jayachandran SK, Anusuyadevi M, Essa MM, Qoronfleh MW. Decoding information on COVID-19: Ontological approach towards design possible therapeutics. INFORMATICS IN MEDICINE UNLOCKED 2020; 22:100486. [PMID: 33263073 PMCID: PMC7691137 DOI: 10.1016/j.imu.2020.100486] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/20/2020] [Accepted: 11/20/2020] [Indexed: 12/23/2022] Open
Abstract
To date, no effective preventive or curative medical interventions exist against COVID-19, caused by Severe Acute Respiratory Syndrome corona virus 2 (SARS CoV-2). The available interventions are only supportive and palliative in nature. Popular among the emerging explanations for the mortality from COVID-19 is "cytokine storm", attributed to the body's aggressive immune response to this novel pathogen. In less than a year the disease has spread to almost all countries, though the mortality rates have varied significantly from country to country based on factors such as the demographical mix of the population, prevalence of comorbidities, as well as prior exposure to viruses from the corona family. This review examines the current literature on mortality rates across the globe, explores the possible reasons, thereby decoding variations. COVID-19 researchers have noted unique characteristics in the structural and host-pathogen interaction and identified several possible target proteins and sites that could exhibit control over the entry of SARS CoV-2 into the host, which this paper reviews in detail. Identification of new targets, both in the virus and the host, may accelerate the search for effective vaccines and curative drugs against COVID-19. Further, the ontological approach of this review is likely to provide insights for researchers to anticipate and be ready for future mutant viruses that may emerge in future.
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Affiliation(s)
- Swaminathan K Jayachandran
- Drug Discovery and Molecular Cardiology Lab, Department of Bioinformatics, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620204, India
| | - Muthuswamy Anusuyadevi
- Molecular Gerontology Lab, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620204, India
| | - Musthafa Mohamed Essa
- Department of Food Science and Nutrition, CAMS, Sultan Qaboos University, Muscat, Oman
- Ageing and Dementia Research Group, Sultan Qaboos University, Muscat, Oman
| | - M Walid Qoronfleh
- Research & Policy Department, World Innovation Summit for Health (WISH), Qatar Foundation, P.O. Box 5825, Doha, Qatar
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13
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A Model for the Homotypic Interaction between Na +,K +-ATPase β 1 Subunits Reveals the Role of Extracellular Residues 221-229 in Its Ig-Like Domain. Int J Mol Sci 2019; 20:ijms20184538. [PMID: 31540261 PMCID: PMC6770782 DOI: 10.3390/ijms20184538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/13/2019] [Accepted: 08/16/2019] [Indexed: 12/15/2022] Open
Abstract
The Na+, K+-ATPase transports Na+ and K+ across the membrane of all animal cells. In addition to its ion transporting function, the Na+, K+-ATPase acts as a homotypic epithelial cell adhesion molecule via its β1 subunit. The extracellular region of the Na+, K+-ATPase β1 subunit includes a single globular immunoglobulin-like domain. We performed Molecular Dynamics simulations of the ectodomain of the β1 subunit and a refined protein-protein docking prediction. Our results show that the β1 subunit Ig-like domain maintains an independent structure and dimerizes in an antiparallel fashion. Analysis of the putative interface identified segment Lys221-Tyr229. We generated triple mutations on YFP-β1 subunit fusion proteins to assess the contribution of these residues. CHO fibroblasts transfected with mutant β1 subunits showed a significantly decreased cell-cell adhesion. Association of β1 subunits in vitro was also reduced, as determined by pull-down assays. Altogether, we conclude that two Na+, K+-ATPase molecules recognize each other by a large interface spanning residues 221–229 and 198–207 on their β1 subunits.
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14
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Jia Y, Liu X. Expression of Na +/K +-ATPase Was Affected by Salinity Change in Pacific abalone Haliotis discus hannai. Front Physiol 2018; 9:1244. [PMID: 30245637 PMCID: PMC6137147 DOI: 10.3389/fphys.2018.01244] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 08/17/2018] [Indexed: 11/30/2022] Open
Abstract
Na+/K+-ATPase (NKA) belongs to the P-type ATPase family, whose members are located in the cell membrane and are distributed in diverse tissues and cells. The main function of the NKA is to regulate osmotic pressure. To better understand the role of NKA in osmoregulation, we first cloned and characterized the full-length cDNAs of NKA α subunit and β subunit from Pacific abalone Haliotis discus hannai in the current study. The predicted protein sequence of the NKA α subunit, as the catalytic subunit, was well conserved. In contrast, the protein sequence of the β subunit had low similarity with those of other species. Phylogenetic analysis revealed that both the α and β subunits of the NKA protein of Pacific abalone were clustered with those of the Gastropoda. Then, the relationship between salinity changes and the NKA was investigated. Sudden salinity changes (with low-salinity seawater (LSW) or high-salinity seawater (HSW)) led to clear changes in ion concentration (Na+ and K+) in hemolymph; however, the relative stability of ion concentrations in tissue revealed that Pacific abalone has a strong osmotic pressure regulation ability when faced with these salinity changes. Meanwhile, the expression and activity of the NKA was significantly decreased (in LSW group) or increased (in HSW group) during the ion concentration re-establishing stages, which was consistent with the coordinated regulation of ion concentration in hemolymph. Moreover, a positive correlation between cyclic adenosine monophosphate (cAMP) concentrations and NKA mRNA expression (NKA activity) was observed in mantle and gill. Therefore, the sudden salinity changes may affect NKA transcription activation, translation and enzyme activity via a cAMP-mediated pathway.
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Affiliation(s)
- Yanglei Jia
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology and Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xiao Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology and Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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15
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Hillen AEJ, Burbach JPH, Hol EM. Cell adhesion and matricellular support by astrocytes of the tripartite synapse. Prog Neurobiol 2018; 165-167:66-86. [PMID: 29444459 DOI: 10.1016/j.pneurobio.2018.02.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/25/2017] [Accepted: 02/07/2018] [Indexed: 12/18/2022]
Abstract
Astrocytes contribute to the formation, function, and plasticity of synapses. Their processes enwrap the neuronal components of the tripartite synapse, and due to this close interaction they are perfectly positioned to modulate neuronal communication. The interaction between astrocytes and synapses is facilitated by cell adhesion molecules and matricellular proteins, which have been implicated in the formation and functioning of tripartite synapses. The importance of such neuron-astrocyte integration at the synapse is underscored by the emerging role of astrocyte dysfunction in synaptic pathologies such as autism and schizophrenia. Here we review astrocyte-expressed cell adhesion molecules and matricellular molecules that play a role in integration of neurons and astrocytes within the tripartite synapse.
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Affiliation(s)
- Anne E J Hillen
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, 3584 CG Utrecht, The Netherlands; Department of Pediatrics/Child Neurology, VU University Medical Center, 1081 HV Amsterdam, The Netherlands
| | - J Peter H Burbach
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - Elly M Hol
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, 3584 CG Utrecht, The Netherlands; Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, 1098 XH Amsterdam, The Netherlands; Department of Neuroimmunology, Netherlands Institute for Neuroscience, An Institute of the Royal Netherlands Academy of Arts and Sciences, 1105 BA Amsterdam, The Netherlands.
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16
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Kavanagh EL, Lindsay S, Halasz M, Gubbins LC, Weiner-Gorzel K, Guang MHZ, McGoldrick A, Collins E, Henry M, Blanco-Fernández A, O Gorman P, Fitzpatrick P, Higgins MJ, Dowling P, McCann A. Protein and chemotherapy profiling of extracellular vesicles harvested from therapeutic induced senescent triple negative breast cancer cells. Oncogenesis 2017; 6:e388. [PMID: 28991260 PMCID: PMC5668881 DOI: 10.1038/oncsis.2017.82] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 07/17/2017] [Accepted: 08/19/2017] [Indexed: 02/08/2023] Open
Abstract
Triple negative breast cancer (TNBC) is an aggressive subtype with relatively poor clinical outcomes and limited treatment options. Chemotherapy, while killing cancer cells, can result in the generation of highly chemoresistant therapeutic induced senescent (TIS) cells that potentially form stem cell niches resulting in metastases. Intriguingly, senescent cells release significantly more extracellular vesicles (EVs) than non-senescent cells. Our aim was to profile EVs harvested from TIS TNBC cells compared with control cells to identify a potential mechanism by which TIS TNBC cells maintain survival in the face of chemotherapy. TIS was induced and confirmed in Cal51 TNBC cells using the chemotherapeutic paclitaxel (PTX) (Taxol). Mass spectrometry (MS) analysis of EVs harvested from TIS compared with control Cal51 cells was performed using Ingenuity Pathway Analysis and InnateDB programs. We demonstrate that TIS Cal51 cells treated with 75 nM PTX for 7 days became senescent (senescence-associated β-galactosidase (SA-β-Gal) positive, Ki67-negative, increased p21 and p16, G2/M cell cycle arrest) and released significantly more EVs (P=0.0002) and exosomes (P=0.0007) than non-senescent control cells. Moreover, TIS cells displayed an increased expression of the multidrug resistance protein 1/p-glycoprotein. MS analysis demonstrated that EVs derived from senescent Cal51 cells contained 142 proteins with a significant increased fold change compared with control EVs. Key proteins included ATPases, annexins, tubulins, integrins, Rabs and insoluble senescence-associated secretory phenotype (SASP) factors. A fluorescent analogue of PTX (Flutax-2) allowed appreciation of the removal of chemotherapy in EVs from senescent cells. Treatment of TIS cells with the exosome biogenesis inhibitor GW4869 resulted in reduced SA-β-Gal staining (P=0.04). In summary, this study demonstrates that TIS cells release significantly more EVs compared with control cells, containing chemotherapy and key proteins involved in cell proliferation, ATP depletion, apoptosis and the SASP. These findings may partially explain why cancer senescent cells remain viable despite chemotherapeutic challenge.
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Affiliation(s)
- E L Kavanagh
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland.,These authors contributed equally to this manuscript
| | - S Lindsay
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland.,These authors contributed equally to this manuscript
| | - M Halasz
- Systems Biology Ireland (SBI), University College Dublin (UCD), Dublin, Ireland.,UCD School of Medicine, College of Health and Agricultural Science, University College Dublin (UCD), Dublin, Ireland
| | - L C Gubbins
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland
| | - K Weiner-Gorzel
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland
| | - M H Z Guang
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland
| | - A McGoldrick
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland
| | - E Collins
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland
| | - M Henry
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - A Blanco-Fernández
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland
| | - P O Gorman
- Haematology Department, Mater Misericordiae University Hospital, Dublin, Ireland
| | - P Fitzpatrick
- UCD School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland
| | - M J Higgins
- Oncology Department, Mater Misericordiae University Hospital, Dublin, Ireland
| | - P Dowling
- Biology Department, National University of Ireland Maynooth, Dublin, Ireland
| | - A McCann
- UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin (UCD), Dublin, Ireland.,UCD School of Medicine, College of Health and Agricultural Science, University College Dublin (UCD), Dublin, Ireland
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17
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Balasubramaniam SL, Gopalakrishnapillai A, Barwe SP. Ion dependence of Na-K-ATPase-mediated epithelial cell adhesion and migration. Am J Physiol Cell Physiol 2015; 309:C437-41. [PMID: 26157008 DOI: 10.1152/ajpcell.00140.2015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sona Lakshme Balasubramaniam
- Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware; and Department of Biological Sciences, University of Delaware, Newark, Delaware
| | | | - Sonali P Barwe
- Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware; and Department of Biological Sciences, University of Delaware, Newark, Delaware
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18
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Huynh TP, Barwe SP, Lee SJ, McSpadden R, Franco OE, Hayward SW, Damoiseaux R, Grubbs SS, Petrelli NJ, Rajasekaran AK. Glucocorticoids suppress renal cell carcinoma progression by enhancing Na,K-ATPase beta-1 subunit expression. PLoS One 2015; 10:e0122442. [PMID: 25836370 PMCID: PMC4383530 DOI: 10.1371/journal.pone.0122442] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 02/21/2015] [Indexed: 11/28/2022] Open
Abstract
Glucocorticoids are commonly used as palliative or chemotherapeutic clinical agents for treatment of a variety of cancers. Although steroid treatment is beneficial, the mechanisms by which steroids improve outcome in cancer patients are not well understood. Na,K-ATPase beta-subunit isoform 1 (NaK-β1) is a cell-cell adhesion molecule, and its expression is down-regulated in cancer cells undergoing epithelial-to mesenchymal-transition (EMT), a key event associated with cancer progression to metastatic disease. In this study, we performed high-throughput screening to identify small molecules that could up-regulate NaK-β1 expression in cancer cells. Compounds related to the glucocorticoids were identified as drug candidates enhancing NaK-β1 expression. Of these compounds, triamcinolone, dexamethasone, and fluorometholone were validated to increase NaK-β1 expression at the cell surface, enhance cell-cell adhesion, attenuate motility and invasiveness and induce mesenchymal to epithelial like transition of renal cell carcinoma (RCC) cells in vitro. Treatment of NaK-β1 knockdown cells with these drug candidates confirmed that these compounds mediate their effects through up-regulating NaK-β1. Furthermore, we demonstrated that these compounds attenuate tumor growth in subcutaneous RCC xenografts and reduce local invasiveness in orthotopically-implanted tumors. Our results strongly indicate that the addition of glucocorticoids in the treatment of RCC may improve outcome for RCC patients by augmenting NaK-β1 cell-cell adhesion function.
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MESH Headings
- Animals
- Carcinoma, Renal Cell/drug therapy
- Carcinoma, Renal Cell/enzymology
- Carcinoma, Renal Cell/pathology
- Cell Adhesion/drug effects
- Cell Line, Tumor
- Dexamethasone/pharmacology
- Disease Progression
- Fluorometholone/pharmacology
- Glucocorticoids/pharmacology
- HeLa Cells
- High-Throughput Screening Assays
- Humans
- Kidney Neoplasms/drug therapy
- Kidney Neoplasms/enzymology
- Kidney Neoplasms/pathology
- Male
- Mice
- Mice, Hairless
- Mice, SCID
- Neoplasm Invasiveness/prevention & control
- Promoter Regions, Genetic/drug effects
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- Sodium-Potassium-Exchanging ATPase/genetics
- Sodium-Potassium-Exchanging ATPase/metabolism
- Triamcinolone/pharmacology
- Up-Regulation/drug effects
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Thu P. Huynh
- Molecular Biology Institute, University of California Los Angeles, Los Angeles, California, United States of America
- Nemours Center for Childhood Cancer Research, A. I. DuPont Hospital for Children, Wilmington, Delaware, United States of America
| | - Sonali P. Barwe
- Nemours Center for Childhood Cancer Research, A. I. DuPont Hospital for Children, Wilmington, Delaware, United States of America
| | - Seung J. Lee
- Nemours Center for Childhood Cancer Research, A. I. DuPont Hospital for Children, Wilmington, Delaware, United States of America
| | - Ryan McSpadden
- Nemours Center for Childhood Cancer Research, A. I. DuPont Hospital for Children, Wilmington, Delaware, United States of America
| | - Omar E. Franco
- Department of Urologic Surgery, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Simon W. Hayward
- Department of Urologic Surgery, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Robert Damoiseaux
- California NanoSystems Institute, University of California Los Angeles, Los Angeles, California, United States of America
| | - Stephen S. Grubbs
- Helen F. Graham Cancer Center, Christiana Care Health System, Newark, Delaware, United States of America
| | - Nicholas J. Petrelli
- Helen F. Graham Cancer Center, Christiana Care Health System, Newark, Delaware, United States of America
| | - Ayyappan K. Rajasekaran
- Helen F. Graham Cancer Center, Christiana Care Health System, Newark, Delaware, United States of America
- Department of Biological Sciences, University of Delaware, Newark, Delaware, United States of America
- Therapy Architects, 2700 Silverside Road, Wilmington, Delaware, United States of America
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19
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Lubarski I, Asher C, Garty H. Modulation of cell polarization by the Na+-K+-ATPase-associated protein FXYD5 (dysadherin). Am J Physiol Cell Physiol 2014; 306:C1080-8. [PMID: 24717576 DOI: 10.1152/ajpcell.00042.2014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
FXYD5 (dysadherin or also called a related to ion channel, RIC) is a transmembrane auxiliary subunit of the Na(+)-K(+)-ATPase shown to increase its maximal velocity (Vmax). FXYD5 has also been identified as a cancer-associated protein whose expression in tumor-derived cell lines impairs cytoskeletal organization and increases cell motility. Previously, we have demonstrated that the expression of FXYD5 in M1 cells derived from mouse kidney collecting duct impairs the formation of tight and adherence junctions. The current study aimed to further explore effects of FXYD5 at a single cell level. It was found that in M1, as well as three other cell lines, FXYD5 inhibits transformation of adhered single cells from the initial radial shape to a flattened, elongated shape in the first stage of monolayer formation. This is also correlated to less ordered actin cables and fewer focal points. Structure-function analysis has demonstrated that the transmembrane domain of FXYD5, and not its unique extracellular segment, mediates the inhibition of change in cell shape. This domain has been shown before to be involved in the association of FXYD5 with the Na(+)-K(+)-ATPase, which leads to the increase in Vmax. Furthermore, specific transmembrane point mutations in FXYD5 that either increase or decrease its effect on cell elongation had a corresponding effect on the coimmunoprecipitation of FXYD5 with α Na(+)-K(+)-ATPase. These findings lend support to the possibility that FXYD5 affects cell polarization through its transmembrane domain interaction with the Na(+)-K(+)-ATPase. Yet interaction of FXYD5 with other proteins cannot be excluded.
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Affiliation(s)
- Irina Lubarski
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
| | - Carol Asher
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
| | - Haim Garty
- Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot, Israel
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20
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The сalix[4]arene C-107 is highly effective supramolecular inhibitor of the Na+,K+-АТРase of plasmatic membrane. UKRAINIAN BIOCHEMICAL JOURNAL 2013. [DOI: 10.15407/ubj85.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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21
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Barwe SP, Skay A, McSpadden R, Huynh TP, Langhans SA, Inge LJ, Rajasekaran AK. Na,K-ATPase β-subunit cis homo-oligomerization is necessary for epithelial lumen formation in mammalian cells. J Cell Sci 2012; 125:5711-20. [PMID: 23077177 DOI: 10.1242/jcs.108795] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Na,K-ATPase is a hetero-oligomer of an α- and a β-subunit. The α-subunit (Na,K-α) possesses the catalytic function, whereas the β-subunit (Na,K-β) has cell-cell adhesion function and is localized to the apical junctional complex in polarized epithelial cells. Earlier, we identified two distinct conserved motifs on the Na,K-β(1) transmembrane domain that mediate protein-protein interactions: a glycine zipper motif involved in the cis homo-oligomerization of Na,K-β(1) and a heptad repeat motif that is involved in the hetero-oligomeric interaction with Na,K-α(1). We now provide evidence that knockdown of Na,K-β(1) prevents lumen formation and induces activation of extracellular regulated kinases 1 and 2 (ERK1/2) mediated by phosphatidylinositol 3-kinase in MDCK cells grown in three-dimensional collagen cultures. These cells sustained cell proliferation in an ERK1/2-dependent manner and did not show contact inhibition at high cell densities, as revealed by parental MDCK cells. This phenotype could be rescued by wild-type Na,K-β(1) or heptad repeat motif mutant of Na,K-β(1), but not by the glycine zipper motif mutant that abrogates Na,K-β(1) cis homo-oligomerization. These studies suggest that Na,K-β(1) cis homo-oligomerization rather than hetero-oligomerization with Na,K-α(1) is involved in epithelial lumen formation. The relevance of these findings to pre-neoplastic lumen filling in epithelial cancer is discussed.
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Affiliation(s)
- Sonali P Barwe
- Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA
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Cochrane DR, Jacobsen BM, Connaghan KD, Howe EN, Bain DL, Richer JK. Progestin regulated miRNAs that mediate progesterone receptor action in breast cancer. Mol Cell Endocrinol 2012; 355:15-24. [PMID: 22330642 PMCID: PMC4716679 DOI: 10.1016/j.mce.2011.12.020] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 11/23/2011] [Accepted: 12/29/2011] [Indexed: 01/01/2023]
Abstract
Progesterone receptors (PRs) mediate response to progestins in the normal breast and breast cancer. To determine if liganded PR regulate microRNAs (miRNAs) as a component of their action, we profiled mature miRNA levels following progestin treatment. Indeed, 28 miRNAs are significantly altered by 6h of progestin treatment. Many progestin-responsive genes are putative targets of progestin-regulated miRNAs; for example, progestin treatment decreases miR-29, thereby relieving repression of one of its direct targets, the gene encoding ATPase, Na(+)/K(+) transporting, beta 1 polypeptide (ATP1B1). Thus, liganded PR regulates ATP1B1 through sites in the promoter and the 3'UTR, to achieve maximal tight hormonal regulation of ATP1B1 protein via both transcriptional and translational control. We find that ATP1B1 serves to limit migration and invasion in breast cancer cells. Lastly, we demonstrate that PR itself is regulated by a progestin-upregulated miRNA, miR-513a-5p, providing a novel mechanism for tight control of PR protein expression.
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Affiliation(s)
- Dawn R. Cochrane
- Department of Pathology, University of Colorado Denver Anschutz Medical Campus, Denver, USA
| | - Britta M. Jacobsen
- Department of Medicine, University of Colorado Denver Anschutz Medical Campus, Denver, USA
| | - Keith D. Connaghan
- Department of Pharmaceutical Sciences, University of Colorado Denver Anschutz Medical Campus, Denver, USA
| | - Erin N. Howe
- Department of Pathology, University of Colorado Denver Anschutz Medical Campus, Denver, USA
| | - David L. Bain
- Department of Pharmaceutical Sciences, University of Colorado Denver Anschutz Medical Campus, Denver, USA
| | - Jennifer K. Richer
- Department of Pathology, University of Colorado Denver Anschutz Medical Campus, Denver, USA
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First crystal structures of Na+,K+-ATPase: new light on the oldest ion pump. Structure 2012; 19:1732-8. [PMID: 22153495 DOI: 10.1016/j.str.2011.10.016] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 10/20/2011] [Accepted: 10/21/2011] [Indexed: 11/21/2022]
Abstract
Na(+),K(+)-adenosine triphosphatase (NKA) is the first P-type ion translocating adenosine triphosphatase (ATPase) ever identified, and the significance of this class of proteins was highlighted by the 1997 Nobel Prize in Chemistry awarded to Jens C. Skou for the discovery in 1957. More than half a century passed between the initial identification and the publication of a high-resolution crystal structure of NKA. Although the new crystal structures provided many surprises and insights, structural biology on this system remains challenging, as NKA is a very difficult protein to crystallize. Here we explain the reasons behind the challenges, introduce a mechanism that governs the function, and summarize current knowledge of NKA structure in comparison with another member of the P-type ATPase family, Ca(2+)-ATPase.
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Cereijido M, Contreras RG, Shoshani L, Larre I. The Na+-K+-ATPase as self-adhesion molecule and hormone receptor. Am J Physiol Cell Physiol 2011; 302:C473-81. [PMID: 22049208 DOI: 10.1152/ajpcell.00083.2011] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Thanks to the homeostasis of the internal milieu, metazoan cells can enormously simplify their housekeeping efforts and engage instead in differentiation and multiple forms of organization (tissues, organs, systems) that enable them to produce an astonishing diversity of mammals. The stability of the internal milieu despite drastic variations of the external environment (air, fresh or seawater, gastrointestinal fluids, glomerular filtrate, bile) is due to transporting epithelia that can adjust their specific permeability to H(2)O, H(+), Na(+), K(+), Ca(2+), and Cl(-) over several orders of magnitude and exchange substances with the outer milieu with exquisite precision. This exchange is due to the polarized expression of membrane proteins, among them Na(+)-K(+)-ATPase, an oligomeric enzyme that uses chemical energy from ATP molecules to translocate ions across the plasma membrane of epithelial cells. Na(+)-K(+)-ATPase presents two types of asymmetries: the arrangement of its subunits, and its expression in one pole of the epithelial cell ("polarity"). In most epithelia, polarity consists of the expression of Na(+)-K(+)-ATPase towards the intercellular space and arises in part from the interaction of the extracellular segment of the β-subunit with another β-subunit present in a Na(+)-K(+)-ATPase molecule expressed by a neighboring cell. In addition to enabling the Na(+)-K(+)-ATPase to transport ions and water vectorially, this position exposes its receptors to ouabain and analogous cardiotonic steroids, which are present in the internal milieu because these were secreted by endocrine cells.
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Affiliation(s)
- M Cereijido
- CINVESTAV, Col. San Pedro Zacatenco, Del. Gustavo A. Madero, México, D.F., México.
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Lubarski I, Asher C, Garty H. FXYD5 (dysadherin) regulates the paracellular permeability in cultured kidney collecting duct cells. Am J Physiol Renal Physiol 2011; 301:F1270-80. [PMID: 21900457 DOI: 10.1152/ajprenal.00142.2011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
FXYD5 (dysadherin or RIC) is a member of the FXYD family of single-span transmembrane proteins associated with the Na(+)-K(+)-ATPase. Several studies have demonstrated enhanced expression of FXYD5 during metastasis and effects on cell adhesion and motility. The current study examines effects of FXYD5 on the paracellular permeability in the mouse kidney collecting duct cell line M1. Expressing FXYD5 in these cells leads to a large decrease in amiloride-insensitive transepithelial electrical resistance as well as increased permeability to 4-kDa dextran. Impairment of cell-cell contact was also demonstrated by staining cells for the tight and adherence junction markers zonula occludens-1 and β-catenin, respectively. This is further supported by large expansions of the interstitial spaces, visualized in electron microscope images. Expressing FXYD5 in M1 cells resulted in a decrease in N-glycosylation of β1 Na(+)-K(+)-ATPase, while silencing it in H1299 cells had an opposite effect. This may provide a mechanism for the above effects, since normal glycosylation of β1 plays an important role in cell-cell contact formation (Vagin O, Tokhtaeva E, Sachs G. J Biol Chem 281: 39573-39587, 2006).
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Affiliation(s)
- Irina Lubarski
- Dept. of Biological Chemistry, The Weizmann Institute of Science, Israel
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Padilla-Benavides T, Roldán ML, Larre I, Flores-Benitez D, Villegas-Sepúlveda N, Contreras RG, Cereijido M, Shoshani L. The polarized distribution of Na+,K+-ATPase: role of the interaction between {beta} subunits. Mol Biol Cell 2010; 21:2217-25. [PMID: 20444976 PMCID: PMC2893986 DOI: 10.1091/mbc.e10-01-0081] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Na+,K+-ATPase polarity depends on the interaction between the β subunits of Na+,K+-ATPases located on neighboring cells. In the present work, we use energy transfer methods (FRET), in vivo to demonstrate that these β subunits interact directly at the intercellular space of epithelial cells. The very existence of higher metazoans depends on the vectorial transport of substances across epithelia. A crucial element of this transport is the membrane enzyme Na+,K+-ATPase. Not only is this enzyme distributed in a polarized manner in a restricted domain of the plasma membrane but also it creates the ionic gradients that drive the net movement of glucose, amino acids, and ions across the entire epithelium. In a previous work, we have shown that Na+,K+-ATPase polarity depends on interactions between the β subunits of Na+,K+-ATPases located on neighboring cells and that these interactions anchor the entire enzyme at the borders of the intercellular space. In the present study, we used fluorescence resonance energy transfer and coprecipitation methods to demonstrate that these β subunits have sufficient proximity and affinity to permit a direct interaction, without requiring any additional extracellular molecules to span the distance.
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Affiliation(s)
- Teresita Padilla-Benavides
- Department of Physiology Biophysics and Neurosciences, and Department of Molecular Biomedicine, Center for Research and Advanced Studies, CINVESTAV-IPN, Mexico DF 07300, Mexico
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