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Choi S, Houdek X, Anderson RA. Phosphoinositide 3-kinase pathways and autophagy require phosphatidylinositol phosphate kinases. Adv Biol Regul 2018; 68:31-38. [PMID: 29472147 PMCID: PMC5955796 DOI: 10.1016/j.jbior.2018.02.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 01/10/2023]
Abstract
Phosphatidylinositol phosphate kinases (PIPKs) generate a lipid messenger phosphatidylinositol 4,5-bisphosphate (PI4,5P2) that controls essentially all aspects of cellular functions. PI4,5P2 rapidly diffuses in the membrane of the lipid bilayer and does not greatly change in membrane or cellular content, and thus PI4,5P2 generation by PIPKs is tightly linked to its usage in subcellular compartments. Based on this verity, recent study of PI4,5P2 signal transduction has been focused on investigations of individual PIPKs and their underlying molecular regulation of cellular processes. Here, we will discuss recent advances in the study of how PIPKs control specific cellular events through assembly and regulation of PI4,5P2 effectors that mediate specific cellular processes. A focus will be on the roles of PIPKs in control of the phosphoinositide 3-kinase pathway and autophagy.
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Affiliation(s)
- Suyong Choi
- University of Wisconsin-Madison, School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
| | - Xander Houdek
- University of Wisconsin-Madison, School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
| | - Richard A Anderson
- University of Wisconsin-Madison, School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA.
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52
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Li B, Wang W, Li Z, Chen Z, Zhi X, Xu J, Li Q, Wang L, Huang X, Wang L, Wei S, Sun G, Zhang X, He Z, Zhang L, Zhang D, Xu H, El-Rifai W, Xu Z. MicroRNA-148a-3p enhances cisplatin cytotoxicity in gastric cancer through mitochondrial fission induction and cyto-protective autophagy suppression. Cancer Lett 2017; 410:212-227. [PMID: 28965855 PMCID: PMC5675767 DOI: 10.1016/j.canlet.2017.09.035] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/18/2017] [Accepted: 09/21/2017] [Indexed: 12/17/2022]
Abstract
Cisplatin (CDDP) resistance is a major clinical problem associated with poor prognosis in gastric cancer (GC) patients. In this study, we performed integrated analysis of TCGA data from microRNAs (miRNAs) expression matrix of GC patients who received CDDP-based chemotherapy with GEO dataset which contains differential miRNAs expression profiles in CDDP-resistant and -sensitive cell lines. We identified miR-148a-3p downregulation as a key step involved in CDDP resistance. Using a cohort consisting 105 GC patients who received CDDP-based therapy, we found that miR-148a-3p downregulation was associated with a decrease in patients' disease-free survival (DFS, P = 0.0077). A series of experiment data demonstrated that: 1) miR-148a-3p was downregulated in CDDP-resistant GC cell lines; 2) miR-148a-3p reconstitution sensitized CDDP-resistant cells to CDDP treatment through promoting mitochondrial fission and decreasing AKAP1 expression level; 3) AKAP1 played a novel role in CDDP resistance by inhibiting P53-mediated DRP1 dephosphorylation; 4) miR-148a-3p reconstitution in CDDP-resistant cells inhibits the cyto-protective autophagy by suppressing RAB12 expression and mTOR1 activation. Taken together, our study demonstrates that miR-148a-3p could be a promising prognostic marker or therapeutic candidate for overcoming CDDP resistance in GC.
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Affiliation(s)
- Bowen Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Weizhi Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Zheng Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Zheng Chen
- Department of Surgery and Cancer Biology, Vanderbilt University Medical Center, Nashville, 37232, TN, USA
| | - Xiaofei Zhi
- Department of General Surgery, The Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu province, China
| | - Jianghao Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Qing Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Lu Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Xiaoxu Huang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Linjun Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Song Wei
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Guangli Sun
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Xuan Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Zhongyuan He
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Lu Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Diancai Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Hao Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China
| | - Wael El-Rifai
- Department of Surgery and Cancer Biology, Vanderbilt University Medical Center, Nashville, 37232, TN, USA; Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, 37232, TN, USA.
| | - Zekuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu province, China.
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53
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Bianchi-Smiraglia A, Rana MS, Foley CE, Paul LM, Lipchick BC, Moparthy S, Moparthy K, Fink EE, Bagati A, Hurley E, Affronti HC, Bakin AV, Kandel ES, Smiraglia DJ, Feltri ML, Sousa R, Nikiforov MA. Internally ratiometric fluorescent sensors for evaluation of intracellular GTP levels and distribution. Nat Methods 2017; 14:1003-1009. [PMID: 28869758 PMCID: PMC5636219 DOI: 10.1038/nmeth.4404] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 07/25/2017] [Indexed: 02/07/2023]
Abstract
GTP is a major regulator of multiple cellular processes, but tools for quantitative evaluation of GTP levels in live cells have not been available. We report the development and characterization of genetically encoded GTP sensors, which we constructed by inserting a circularly permuted yellow fluorescent protein (cpYFP) into a region of the bacterial G protein FeoB that undergoes a GTP-driven conformational change. GTP binding to these sensors results in a ratiometric change in their fluorescence, thereby providing an internally normalized response to changes in GTP levels while minimally perturbing those levels. Mutations introduced into FeoB to alter its affinity for GTP created a series of sensors with a wide dynamic range. Critically, in mammalian cells the sensors showed consistent changes in ratiometric signal upon depletion or restoration of GTP pools. We show that these GTP evaluators (GEVALs) are suitable for detection of spatiotemporal changes in GTP levels in living cells and for high-throughput screening of molecules that modulate GTP levels.
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Affiliation(s)
- Anna Bianchi-Smiraglia
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Mitra S. Rana
- Department of Biochemistry and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Colleen E. Foley
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Leslie M. Paul
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Brittany C. Lipchick
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Sudha Moparthy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Kalyana Moparthy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Emily E. Fink
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Archis Bagati
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Edward Hurley
- Department of Biochemistry and Neurology, Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Hayley C. Affronti
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Andrei V. Bakin
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Eugene S. Kandel
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Dominic J. Smiraglia
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - Maria Laura Feltri
- Department of Biochemistry and Neurology, Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Rui Sousa
- Department of Biochemistry and Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Mikhail A. Nikiforov
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA
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54
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Takeuchi K, Senda M, Lo YH, Kofuji S, Ikeda Y, Sasaki AT, Senda T. Structural reverse genetics study of the PI5P4Kβ-nucleotide complexes reveals the presence of the GTP bioenergetic system in mammalian cells. FEBS J 2017; 283:3556-3562. [PMID: 27090388 DOI: 10.1111/febs.13739] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/12/2016] [Accepted: 04/18/2016] [Indexed: 12/13/2022]
Abstract
Reverse genetic analysis can connect a gene and its protein counterpart to a biological function(s) by knockout or knockdown of the specific gene. However, when a protein has multiple biochemical activities, the conventional genetics strategy is incapable of distinguishing which biochemical activity of the protein is critical for the particular biological function(s). Here, we propose a structural reverse genetics strategy to overcome this problem. In a structural reverse genetics study, multiple biochemical activities of a protein are segregated by mapping those activities to a structural element(s) in the atomic resolution tertiary structure. Based on the structural mapping, a mutant lacking one biochemical activity of interest can be produced with the other activities kept intact. Expression of the mutant by knockin or ectopic expression in the knockout strain along with the following analysis can connect the single biochemical activity of interest to a biological function. Using the structural reverse genetics strategy, we have dissected the newly identified GTP-dependent activity of a lipid kinase PI5P4Kβ from its ATP-dependent activity. The GTP-insensitive mutant has demonstrated the existence of the GTP bioenergetic sensor system in mammalian cells and its critical role in tumorigenesis. As structural reverse genetics can identify in vivo significance of individual biochemical activity, it is a powerful approach to reveal hidden biological functions, which could be a novel pharmacological target for therapeutic intervention. Given the recent expansion of choices in structural biological methods and advances in genome editing technologies, the time is ripe for structural reverse genetics strategies.
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Affiliation(s)
- Koh Takeuchi
- Biomedicinal Information Research Center and Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Koto, Tokyo, Japan.,JST, PRESTO, Tokyo, Japan
| | - Miki Senda
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan
| | - Yu-Hua Lo
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan
| | - Satoshi Kofuji
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, OH, USA
| | - Yoshiki Ikeda
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, OH, USA
| | - Atsuo T Sasaki
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, OH, USA. .,Department of Cancer Biology, Brain Tumor Center, Neuroscience Institute, University of Cincinnati College of Medicine, OH, USA. .,Department of Neurosurgery, Brain Tumor Center, Neuroscience Institute, University of Cincinnati College of Medicine, OH, USA.
| | - Toshiya Senda
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan. .,Department of Materials Structure Science, School of High Energy Accelerator Science, The graduate University of Advanced Studies (Soken-dai), Tsukuba, Ibaraki, Japan.
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55
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Thapa N, Tan X, Choi S, Lambert PF, Rapraeger AC, Anderson RA. The Hidden Conundrum of Phosphoinositide Signaling in Cancer. Trends Cancer 2016; 2:378-390. [PMID: 27819060 DOI: 10.1016/j.trecan.2016.05.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Phosphoinositide 3-kinase (PI3K) generation of PI(3,4,5)P3 from PI(4,5)P2 and the subsequent activation of Akt and its downstream signaling cascades (e.g. mTORC1) dominates the landscape of phosphoinositide signaling axis in cancer research. However, PI(4,5)P2 is breaking its boundary as merely a substrate for PI3K and phospholipase C (PLC), and is now an established lipid messenger pivotal for different cellular events in cancer. Here, we review the phosphoinositide signaling axis in cancer, giving due weight to PI(4,5)P2 and its generating enzymes, the phosphatidylinositol phosphate (PIP) kinases (PIPKs). We highlighted how PI(4,5)P2 and PIP kinases serve as a proximal node in phosphoinositide signaling axis and how its interaction with cytoskeletal proteins regulates migratory and invasive nexus of metastasizing tumor cells.
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Affiliation(s)
- Narendra Thapa
- University of Wisconsin-Madison School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
| | - Xiaojun Tan
- Program in Molecular and Cellular Pharmacology, 1300 University Avenue, Madison, WI 53706, USA
| | - Suyong Choi
- University of Wisconsin-Madison School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
| | - Paul F Lambert
- Department of Oncology, 1300 University Avenue, Madison, WI 53706, USA; McArdle Laboratory for Cancer Research, 1300 University Avenue, Madison, WI 53706, USA; University of Wisconsin-Madison School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
| | - Alan C Rapraeger
- Program in Molecular and Cellular Pharmacology, 1300 University Avenue, Madison, WI 53706, USA; Department of Human Oncology, 1300 University Avenue, Madison, WI 53706, USA; University of Wisconsin-Madison School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
| | - Richard A Anderson
- Program in Molecular and Cellular Pharmacology, 1300 University Avenue, Madison, WI 53706, USA; University of Wisconsin-Madison School of Medicine and Public Health, 1300 University Avenue, Madison, WI 53706, USA
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56
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Fiume R, Jones DR, Divecha N. PIP4K2B: Coupling GTP Sensing to PtdIns5P Levels to Regulate Tumorigenesis. Trends Biochem Sci 2016; 41:473-475. [PMID: 27132569 DOI: 10.1016/j.tibs.2016.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 04/07/2016] [Indexed: 12/27/2022]
Abstract
Although guanine nucleotides are essential for cell growth, how their levels are sensed in mammalian cells is unknown. Sumita et al. show that PIP4K2B, a phosphoinositide kinase, is a molecular sensor that transduces changes in GTP into changes in the levels of the phosphoinositide PtdIns5P to modulate tumour cell growth.
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Affiliation(s)
- Roberta Fiume
- DIBINEM, University of Bologna, via Irnerio n 4840126, Bologna, Italy
| | - David R Jones
- AstraZeneca, Oncology iMED, Mereside, Alderley Park, Macclesfield, SK10 4TG, UK
| | - Nullin Divecha
- The Inositide Laboratory, Centre for Biological Sciences, Highfield Campus, Southampton University, Southampton, SO17 1BJ, UK; INGM Istituto Nazionale Genetica Molecolare, Padiglione Romeo ed Enrica Invernizzi, IRCCS Ospedale Maggiore Policlinico, Via Francesco Sforza, 35 - 20122 Milano, Italy, C.F. / P.IVA 04175700964. 3.
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