{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T12:45:17Z","timestamp":1775565917836,"version":"3.50.1"},"reference-count":55,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2021,5,21]],"date-time":"2021-05-21T00:00:00Z","timestamp":1621555200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cell Proliferation"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The genetic instability and DNA damage arise during transcription factor\u2010mediated reprogramming of somatic cells, and its efficiency may be reduced due to abnormal chromatin remodelling. The efficiency in somatic cell nuclear transfer (SCNT)\u2010mediated reprogramming is also very low, and it is caused by development arrest of most reconstituted embryos.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Whether the repair of genetic instability or double\u2010strand breaks (DSBs) during SCNT reprogramming may play an important role in embryonic development, we observed and analysed the effect of <jats:italic>Rad 51<\/jats:italic>, a key modulator of DNA damage response (DDR) in SCNT\u2010derived embryos.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Here, we observed that the activity of <jats:italic>Rad 51<\/jats:italic> is lower in SCNT eggs than in conventional IVF and found a significantly lower level of DSBs in SCNT embryos during reprogramming. To address this difference, supplementation with RS\u20101, an activator of <jats:italic>Rad51<\/jats:italic>, during the activation of SCNT embryos can increase RAD51 expression and DSB foci and thereby increased the efficiency of SCNT reprogramming. Through subsequent single\u2010cell RNA\u2010seq analysis, we observed the reactivation of a large number of genes that were not expressed in SCNT\u20102\u2010cell embryos by the upregulation of DDR, which may be related to overcoming the developmental block. Additionally, there may be an independent pathway involving histone demethylase that can reduce reprograming\u2010resistance regions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This technology can contribute to the production of comparable cell sources for regenerative medicine.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cpr.13059","type":"journal-article","created":{"date-parts":[[2021,5,22]],"date-time":"2021-05-22T05:14:08Z","timestamp":1621660448000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Genome stabilization by RAD51\u2010stimulatory compound 1 enhances efficiency of somatic cell nuclear transfer\u2010mediated reprogramming and full\u2010term development of cloned mouse embryos"],"prefix":"10.1111","volume":"54","author":[{"given":"Ah Reum","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Biomedical Science CHA University Seongnam Gyunggi\u2010do 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