A new oxygen modification cyclooctaoxygen binds to nucleic acids as sodium crown complex

• Type of Material: Article
• Authors: Andreas J. Kesel, Chammunsterstr 47; Craig W. Day, Utah State University; Catherine M. Montero, Emory University; Raymond Schinazi, Emory University
• Language: English
• Date: 2016-04-01
• Publisher: Elsevier
• Publication Version: Author Accepted Manuscript (After Peer Review)
• Copyright Statement: © 2016 Elsevier B.V. All rights reserved.
• License: Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International
• Final Published Version (URL): http://dx.doi.org/10.1016/j.bbagen.2016.01.022
• Title of Journal or Parent Work: Biochimica et Biophysica Acta Molecular and Cell Biology of Lipids
• ISSN: 1388-1981
• Volume: 1860
• Issue: 4
• Start Page: 785
• End Page: 794
• Keywords: INHIBITORS; DNA; SOLID OXYGEN; Epigenetics; Science & Technology; Cyclooctaoxygen; RIBOSOMAL RIBONUCLEIC-ACID; CHIRAL HYDROXYMETHYL GROUPS; Biochemistry & Molecular Biology; DERIVATIVES; ASSIGNMENTS; RNA; CELL LINE; PANCREATIC RIBONUCLEASE; Oxygen modification; LYMPHOCYTES; Life Sciences & Biomedicine; Selenium; Biophysics; TORULOPSIS-UTILIS
• Research Categories: Biology, Cell; Biology, Molecular; Biology, Genetics

Abstract

Background Oxygen exists in two gaseous and six solid allotropic modifications. An additional allotropic modification of oxygen, the cyclooctaoxygen, was predicted to exist in 1990. Methods Cyclooctaoxygen sodium was synthesized in vitro from atmospheric oxygen, or catalase effect-generated oxygen, under catalysis of cytosine nucleosides and either ninhydrin or eukaryotic low-molecular weight RNA. Thin-layer chromatographic mobility shift assays were applied on specific nucleic acids and the cyclooctaoxygen sodium complex. Results We report the first synthesis and characterization of cyclooctaoxygen as its sodium crown complex, isolated in the form of three cytosine nucleoside hydrochloride complexes. The cationic cyclooctaoxygen sodium complex is shown to bind to nucleic acids (RNA and DNA), to associate with single-stranded DNA and spermine phosphate, and to be essentially non-toxic to cultured mammalian cells at 0.1-1.0 mM concentration. Conclusions We postulate that cyclooctaoxygen is formed in most eukaryotic cells in vivo from dihydrogen peroxide in a catalase reaction catalyzed by cytidine and RNA. A molecular biological model is deduced for a first epigenetic shell of eukaryotic in vivo DNA. This model incorporates an epigenetic explanation for the interactions of the essential micronutrient selenium (as selenite) with eukaryotic in vivo DNA. General significance Since the sperminium phosphate/cyclooctaoxygen sodium complex is calculated to cover the active regions (2.6%) of bovine lymphocyte interphase genome, and 12.4% of murine enterocyte mitotic chromatin, we propose that the sperminium phosphate/cyclooctaoxygen sodium complex coverage of nucleic acids is essential to eukaryotic gene regulation and promoted proto-eukaryotic evolution.