{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T22:15:57Z","timestamp":1773094557929,"version":"3.50.1"},"reference-count":51,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2022,3,19]],"date-time":"2022-03-19T00:00:00Z","timestamp":1647648000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["CHE1845486"],"award-info":[{"award-number":["CHE1845486"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R15GM124627"],"award-info":[{"award-number":["R15GM124627"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Pathogenic CUG and CCUG RNA repeats have been associated with myotonic dystrophy type 1 and 2 (DM1 and DM2), respectively. Identifying small molecules that can bind these RNA repeats is of great significance to develop potential therapeutics to treat these neurodegenerative diseases. Some studies have shown that aminoglycosides and their derivatives could work as potential lead compounds targeting these RNA repeats. In this work, sisomicin, previously known to bind HIV-1 TAR, is investigated as a possible ligand for CUG RNA repeats. We designed a novel fluorescence-labeled RNA sequence of r(CUG)10 to mimic cellular RNA repeats and improve the detecting sensitivity. The interaction of sisomicin with CUG RNA repeats is characterized by the change of fluorescent signal, which is initially minimized by covalently incorporating the fluorescein into the RNA bases and later increased upon ligand binding. The results show that sisomicin can bind and stabilize the folded RNA structure. We demonstrate that this new fluorescence-based binding characterization assay is consistent with the classic UV Tm technique, indicating its feasibility for high-throughput screening of ligand-RNA binding interactions and wide applications to measure the thermodynamic parameters in addition to binding constants and kinetics when probing such interactions.<\/jats:p>","DOI":"10.3390\/ijms23063321","type":"journal-article","created":{"date-parts":[[2022,3,20]],"date-time":"2022-03-20T21:30:14Z","timestamp":1647811814000},"page":"3321","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Fluorescence-Based Binding Characterization of Small Molecule Ligands Targeting CUG RNA Repeats"],"prefix":"10.3390","volume":"23","author":[{"given":"Zhihua","family":"Chang","sequence":"first","affiliation":[{"name":"Department of Chemistry and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ya Ying","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Chemistry and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Johnsi","family":"Mathivanan","sequence":"additional","affiliation":[{"name":"Department of Chemistry and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vibhav A.","family":"Valsangkar","sequence":"additional","affiliation":[{"name":"Department of Chemistry and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinxi","family":"Du","sequence":"additional","affiliation":[{"name":"Department of Chemistry and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reham A. I.","family":"Abou-Elkhair","sequence":"additional","affiliation":[{"name":"Applied Nucleic Acids Research Center & Chemistry Department, Faculty of Science, Zagazig University, Zagazig 44523, Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abdalla E. A.","family":"Hassan","sequence":"additional","affiliation":[{"name":"Applied Nucleic Acids Research Center & Chemistry Department, Faculty of Science, Zagazig University, Zagazig 44523, Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6198-390X","authenticated-orcid":false,"given":"Jia","family":"Sheng","sequence":"additional","affiliation":[{"name":"Department of Chemistry and The RNA Institute, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,3,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"777","DOI":"10.1016\/j.cell.2009.02.011","article-title":"RNA and disease","volume":"136","author":"Cooper","year":"2009","journal-title":"Cell"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"705","DOI":"10.1016\/j.ncl.2014.04.011","article-title":"Myotonic Dystrophy","volume":"32","author":"Thornton","year":"2014","journal-title":"Neurol. 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