{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T17:36:13Z","timestamp":1789148173754,"version":"build-2803163510"},"reference-count":88,"publisher":"IOP Publishing","issue":"25","license":[{"start":{"date-parts":[[2021,4,1]],"date-time":"2021-04-01T00:00:00Z","timestamp":1617235200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2021,4,1]],"date-time":"2021-04-01T00:00:00Z","timestamp":1617235200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["Nanotechnology"],"published-print":{"date-parts":[[2021,6,18]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>We describe new method for preparing DNA nanospheres for a self-assembled atenolol@DNA (core\/shell) drug delivery system. In this paper, we propose the electrochemical transformation of an alkaline polyelectrolyte solution of DNA into DNA nanospheres. We successfully electrosynthesized DNA nanospheres that were stable for at least 2 months at 4 \u00b0C. UV\u2013visible spectra of the prepared nanospheres revealed a peak ranging from 372 to 392 nm depending on the DNA concentration and from 361 to 398.3 nm depending on the electrospherization time. This result, confirmed with size distribution curves worked out from transmission electron microscopy (TEM) images, showed that increasing electrospherization time (6, 12 and 24 h) induces an increase in the average size of DNA nanospheres (48, 65.5 and 117 nm, respectively). In addition, the average size of DNA nanospheres becomes larger (37.8, 48 and 76.5 nm) with increasing DNA concentration (0.05, 0.1 and 0.2 wt%, respectively). Also, the affinity of DNA chains for the surrounding solvent molecules changed from favorable to bad with concomitant extreme reduction in the zeta potential from \u221231 mV to \u221217 mV. Principally, the attractive and hydrophobic interactions tend to compact the DNA chain into a globule, as confirmed by Fourier transform infrared spectroscopy (FTIR) and TEM. To advance possible applications, we successfully electro self-assembled an atenolol@DNA drug delivery system. Our findings showed that electrospherization as a cost\u2013benefit technique could be effectively employed for sustained drug release. This delivery system achieved a high entrapment efficiency of 68.03\u00a0\u00b1\u00a02.7% and a moderate drug-loading efficiency of 3.73%. The FTIR spectra verified the absence of any chemical interaction between the drug and the DNA during the electrospherization process. X-ray diffraction analysis indicated noteworthy lessening in atenolol crystallinity. The present findings could aid the effectiveness of electrospherized DNA for use in various other pharmaceutical and biomedical applications.<\/jats:p>","DOI":"10.1088\/1361-6528\/abd727","type":"journal-article","created":{"date-parts":[[2020,12,29]],"date-time":"2020-12-29T17:15:42Z","timestamp":1609262142000},"page":"255602","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["Novel electro self-assembled DNA nanospheres as a drug delivery system for atenolol"],"prefix":"10.1088","volume":"32","author":[{"given":"Rehab","family":"Elkayal","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amira","family":"Motawea","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fikry M","family":"Reicha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6932-2839","authenticated-orcid":false,"given":"Ayman S","family":"Elmezayyen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2021,4,1]]},"reference":[{"key":"nanoabd727bib1","doi-asserted-by":"publisher","first-page":"9258","DOI":"10.1039\/D0TB01647K","type":"journal-article","article-title":"Block copolymer [(L-GluA-5-BE)-b-(L-AspA-4-BE)]-based nanoflower capsules with thermosensitive morphology and pH-responsive drug release for cancer therapy","volume":"8","author":"Amgoth","year":"2020","journal-title":"J. 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