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Bulatova L, Savenkova D, Nurgalieva A, Reshetnikova D, Timonina A, Skripova V, Bogdanov M, Kiyamova R. Toward a Topology-Based Therapeutic Design of Membrane Proteins: Validation of NaPi2b Topology in Live Ovarian Cancer Cells. Front Mol Biosci 2022; 9:895911. [PMID: 35911971 PMCID: PMC9335355 DOI: 10.3389/fmolb.2022.895911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
NaPi2b is a sodium-dependent phosphate transporter that belongs to the SLC34 family of transporters which is mainly responsible for phosphate homeostasis in humans. Although NaPi2b is widely expressed in normal tissues, its overexpression has been demonstrated in ovarian, lung, and other cancers. A valuable set of antibodies, including L2 (20/3) and MX35, and its humanized versions react strongly with an antigen on the surface of ovarian and other carcinoma cells. Although the topology of NaPi2b was predicted in silico, no direct experimental data are available for the orientation of NaPi2b extracellular domains in cancer cells. The presented results of antibody mapping of untagged NaPi2b in live ovarian carcinoma cells OVCAR-4 provide a platform for current and future epitope-based cancer therapies and serological diagnostics.
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Affiliation(s)
- Leisan Bulatova
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Daria Savenkova
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Alsina Nurgalieva
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Daria Reshetnikova
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Arina Timonina
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Vera Skripova
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Mikhail Bogdanov
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
- Department of Biochemistry and Molecular Biology, McGovern Medical School, the University of Texas Health Science Center, Houston, TX, United States
- *Correspondence: Ramziya Kiyamova, ; Mikhail Bogdanov,
| | - Ramziya Kiyamova
- Research Laboratory “Biomarker”, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
- *Correspondence: Ramziya Kiyamova, ; Mikhail Bogdanov,
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Hu MC, Moe OW. Phosphate and Cellular Senescence. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1362:55-72. [PMID: 35288873 PMCID: PMC10513121 DOI: 10.1007/978-3-030-91623-7_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Cellular senescence is one type of permeant arrest of cell growth and one of increasingly recognized contributor to aging and age-associated disease. High phosphate and low Klotho individually and synergistically lead to age-related degeneration in multiple organs. Substantial evidence supports the causality of high phosphate in cellular senescence, and potential contribution to human aging, cancer, cardiovascular, kidney, neurodegenerative, and musculoskeletal diseases. Phosphate can induce cellular senescence both by direct phosphotoxicity, and indirectly through downregulation of Klotho and upregulation of plasminogen activator inhibitor-1. Restriction of dietary phosphate intake and blockage of intestinal absorption of phosphate help suppress cellular senescence. Supplementation of Klotho protein, cellular senescence inhibitor, and removal of senescent cells with senolytic agents are potential novel strategies to attenuate phosphate-induced cellular senescence, retard aging, and ameliorate age-associated, and phosphate-induced disorders.
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Affiliation(s)
- Ming Chang Hu
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Departments of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Orson W Moe
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Departments of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Departments of Physiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Lacerda-Abreu MA, Russo-Abrahão T, Monteiro RDQ, Rumjanek FD, Meyer-Fernandes JR. Inorganic phosphate transporters in cancer: Functions, molecular mechanisms and possible clinical applications. Biochim Biophys Acta Rev Cancer 2018; 1870:291-298. [PMID: 29753110 DOI: 10.1016/j.bbcan.2018.05.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/20/2018] [Accepted: 05/09/2018] [Indexed: 01/06/2023]
Abstract
Inorganic phosphate is one of the most essential nutrients for the maintenance of cell life. Because of its essential role in nutrient supplementation, the study of plasma membrane inorganic phosphate transporters in cancer biology has received much attention in recent years. Several studies suggest that these transporters are up-regulated in tumor cells and thus have been considered to be important promoters of tumor progression. Altered expression levels of inorganic phosphate transporters, such as NaPi-IIb (SLC34A2) and PiT-1 (SLC20A1), have been demonstrated. The purpose of this review article was to gather the relevant experimental records on inorganic phosphate transporters in tumors and to demonstrate the importance of these proteins in clinical applications. In this work, we demonstrate that for decades, the potential use of the inorganic phosphate transporter as an antigen for the diagnosis of tumor subtypes remained unknown. With the advancement in molecular biology techniques, phosphate transporters have been identified as being associated with cancer. In addition to their altered expression in cancer, several studies have demonstrated other functions of inorganic phosphate transporters, such as transceptors, rearrangements with oncogenes and modifications in the expression of ABC transporters, aiding in the process of proliferation and drug resistance.
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Affiliation(s)
- Marco Antônio Lacerda-Abreu
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, RJ, Brazil; National Institute of Science and Technology in Structural Biology and Bioimaging, Rio de Janeiro, RJ, Brazil
| | - Thais Russo-Abrahão
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, RJ, Brazil; National Institute of Science and Technology in Structural Biology and Bioimaging, Rio de Janeiro, RJ, Brazil
| | | | - Franklin David Rumjanek
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, RJ, Brazil
| | - José Roberto Meyer-Fernandes
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, RJ, Brazil; National Institute of Science and Technology in Structural Biology and Bioimaging, Rio de Janeiro, RJ, Brazil.
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