Antonella L Bastone, Philipp John-Neek, Violetta Dziadek, Friederike Mansel, Maike Hagedorn, Jenni Fleischauer, Bettina Weigel, Gabi Paul, Axel Schambach, Michael Rothe
{"title":"Meta-Analysis and Optimization of the <i>In Vitro</i> Immortalization Assay for Safety Assessment of Retroviral Vectors in Gene Therapy.","authors":"Antonella L Bastone, Philipp John-Neek, Violetta Dziadek, Friederike Mansel, Maike Hagedorn, Jenni Fleischauer, Bettina Weigel, Gabi Paul, Axel Schambach, Michael Rothe","doi":"10.1089/hum.2024.221","DOIUrl":null,"url":null,"abstract":"<p><p>The underlying risk of retroviral vector-induced insertional oncogenesis in gene therapies requires a reliable preclinical safety assessment. Dysregulation of genes neighboring the vector's integration sites has triggered hematopoietic malignancies in patients treated with different vector genera and designs. With ca. 18 years in practical use, the <i>in vitro</i> immortalization (IVIM) assay can quantify this mutagenic potential and is actively requested by regulatory authorities during preclinical stages. Here, we present a thorough meta-analysis of IVIM data alongside a step-by-step cell culture protocol. On this basis, we propose clonal outgrowth as the single indicator of mutagenicity, simplifying the IVIM assay cost- and time-wise.</p>","PeriodicalId":13007,"journal":{"name":"Human gene therapy","volume":" ","pages":"1268-1281"},"PeriodicalIF":4.0000,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Human gene therapy","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1089/hum.2024.221","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/9 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The underlying risk of retroviral vector-induced insertional oncogenesis in gene therapies requires a reliable preclinical safety assessment. Dysregulation of genes neighboring the vector's integration sites has triggered hematopoietic malignancies in patients treated with different vector genera and designs. With ca. 18 years in practical use, the in vitro immortalization (IVIM) assay can quantify this mutagenic potential and is actively requested by regulatory authorities during preclinical stages. Here, we present a thorough meta-analysis of IVIM data alongside a step-by-step cell culture protocol. On this basis, we propose clonal outgrowth as the single indicator of mutagenicity, simplifying the IVIM assay cost- and time-wise.
期刊介绍：
Human Gene Therapy is the premier, multidisciplinary journal covering all aspects of gene therapy. The Journal publishes in-depth coverage of DNA, RNA, and cell therapies by delivering the latest breakthroughs in research and technologies. Human Gene Therapy provides a central forum for scientific and clinical information, including ethical, legal, regulatory, social, and commercial issues, which enables the advancement and progress of therapeutic procedures leading to improved patient outcomes, and ultimately, to curing diseases.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
