Role and Regulation of Snon/Skil and PLSCR1 Located at 3Q26.2
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University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School 9-18-2014 Role and Regulation of SnoN/SkiL and PLSCR1 Located at 3q26.2 and 3q23, Respectively, in Ovarian Cancer Pathophysiology Madhav Karthik Kodigepalli University of South Florida, [email protected] Follow this and additional works at: https://scholarcommons.usf.edu/etd Part of the Cell Biology Commons, Microbiology Commons, and the Molecular Biology Commons Scholar Commons Citation Kodigepalli, Madhav Karthik, "Role and Regulation of SnoN/SkiL and PLSCR1 Located at 3q26.2 and 3q23, Respectively, in Ovarian Cancer Pathophysiology" (2014). Graduate Theses and Dissertations. https://scholarcommons.usf.edu/etd/5426 This Dissertation is brought to you for free and open access by the Graduate School at Scholar Commons. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. Role and Regulation of SnoN/SkiL and PLSCR1 Located at 3q26.2 and 3q23, Respectively, in Ovarian Cancer Pathophysiology by Madhav Karthik Kodigepalli A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Cell and Molecular Biology Department of Cell Biology, Microbiology and Molecular Biology College of Arts and Sciences University of South Florida Major Professor: Meera Nanjundan, Ph.D. Richard Pollenz, Ph.D. Patrick Bradshaw, Ph.D. Sandy Westerheide, Ph.D. Date of Approval: September 18, 2014 Keywords: Chemotherapeutics, phospholipid scramblase, toll-like receptor, interferon, dsDNA Copyright © 2014, Madhav Karthik Kodigepalli Dedication I dedicate this research at the lotus feet of Bhagwan Sri Sathya Sai Baba and all the Masters for I am what I am due to their divine grace. I also dedicate this work to my parents Prabhakar Kodigepalli and Subba Lakshmi Kodigepalli, to my brothers Deepak and Prashanth, and to my loving wife Punashi for their constant support and encouragement which has helped me throughout this journey. Acknowledgments Firstly, I would like to thank my mentor Dr. Meera Nanjundan for all her support and guidance. I am deeply grateful to her for her contribution of time and ideas to make my Ph.D. experience both productive and motivating. I am thankful for all her advice and insightful suggestions without which this dissertation would not have been possible. I wish to thank my committee members Dr. Richard Pollenz, Dr. Patrick Bradshaw and Dr. Sandy Westerheide for all their valuable time and constant support through my Ph.D. I also thank my current and former lab partners Punashi Dutta, Kyle Bauckman, and Dawn Smith for all the stimulating scientific discussions. Additionally, I would like thank all the undergraduate students for their kind assistance in the laboratory. I am also grateful to Dr. Lindsey Shaw who let me rotate in his lab when I first joined the department and has been very supportive and understanding of me. At last, I would like to thank my parents, all my family and friends for their encouragement and moral support. Table of Contents List of Tables ............................................................................................................................................... iv List of Figures ............................................................................................................................................... v Abbreviations .............................................................................................................................................. vii Abstract ...................................................................................................................................................... viii Chapter 1: Introduction ................................................................................................................................. 1 Ovarian Cancer ................................................................................................................................ 1 Current treatment strategies ................................................................................................ 2 Common genetic aberrations .............................................................................................. 2 Amplifications of chromosomal region 3q26 ..................................................................... 3 TGFβ signaling ................................................................................................................... 4 SnoN ................................................................................................................................................ 4 Arsenic Trioxide (As2O3) ................................................................................................................. 6 Programmed Cell Death ................................................................................................................... 7 Autophagy ........................................................................................................................... 7 Apoptosis ............................................................................................................................ 8 Necroptosis ......................................................................................................................... 9 Phospholipid Scramblase: PLSCR Family Members, TMEM16F and Xkr8 ................................ 10 Phospholipids, membrane asymmetry, scramblase activity, and blood coagulation ........ 10 cDNA cloning of “phospholipid scramblases” ................................................................. 11 Gene location and protein structure of PLSCR1 isoforms ................................................ 12 Scramblase activity of PLSCR family members............................................................... 15 Defect in TMEM16/Ano6 is responsible for scramblase activity deficiency in Scott syndrome platelets ...................................................................................................... 17 Regulation, Subcellular Localization, and Functions of PLSCR Family Members ....................... 18 Transcriptional regulation by growth factors, interferons, and Snail ................................ 18 Subcellular localization of PLSCR1 ................................................................................. 19 Role of PLSCR1 in cell signaling/receptor trafficking events and protein-protein interactions ................................................................................................................. 20 Role of PLSCR1 as a DNA-binding protein and transcription factor ............................... 22 Functions of PLSCR1: Innate Immune Recognition, Cell Death Pathways, and Cancer .............. 23 Antiviral functions of PLSCR1 and viral entry ................................................................ 23 Role of PLSCR1 in autoimmune diseases (systemic lupus erythematosus) ..................... 25 PLSCR1 in innate immune responses: TLR signaling...................................................... 25 Role of PLSCR1 in apoptosis and autophagy ................................................................... 26 Role of PLSCR1 in blood and solid cancers ..................................................................... 27 Hypotheses and Objectives ............................................................................................................ 28 Specific Aim 1 (presented in Chapter 3) ........................................................................... 29 Aim 1.1 ................................................................................................................ 29 i Aim 1.2 ................................................................................................................ 29 Specific Aim 2 (presented in Chapter 4) ........................................................................... 29 Aim 2.1 ................................................................................................................ 29 Aim 2.2 ................................................................................................................ 29 Aim 2.3 ................................................................................................................ 29 Specific Aim 3 (presented in Chapter 5) ........................................................................... 29 Aim 3.1 ................................................................................................................ 29 Aim 3.2 ................................................................................................................ 29 Overall Impact and Significance .................................................................................................... 29 Chapter 2: Materials and Methods .............................................................................................................. 31 Culture and Propagation of Cell Lines ........................................................................................... 31 Genomic DNA Isolation and STR profiling .................................................................................. 32 Cellular Treatments with Growth Factors, Chemotherapeutic Agents, and Signaling pathway Inhibitors .......................................................................................................................................