{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T06:23:57Z","timestamp":1785392637530,"version":"3.55.0"},"reference-count":61,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,19]],"date-time":"2023-05-19T00:00:00Z","timestamp":1684454400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82101957"],"award-info":[{"award-number":["82101957"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82271752"],"award-info":[{"award-number":["82271752"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["2022YFC2703600"],"award-info":[{"award-number":["2022YFC2703600"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["82101957"],"award-info":[{"award-number":["82101957"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["82271752"],"award-info":[{"award-number":["82271752"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2022YFC2703600"],"award-info":[{"award-number":["2022YFC2703600"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Hemophilia B (HB) is an X-linked recessive disease caused by F9 gene mutation and functional coagulation factor IX (FIX) deficiency. Patients suffer from chronic arthritis and death threats owing to excessive bleeding. Compared with traditional treatments, gene therapy for HB has obvious advantages, especially when the hyperactive FIX mutant (FIX-Padua) is used. However, the mechanism by which FIX-Padua works remains ambiguous due to a lack of research models. Here, in situ introduction of F9-Padua mutation was performed in human induced pluripotent stem cells (hiPSCs) via CRISPR\/Cas9 and single-stranded oligodeoxynucleotides (ssODNs). The hyperactivity of FIX-Padua was confirmed to be 364% of the normal level in edited hiPSCs-derived hepatocytes, providing a reliable model for exploring the mechanism of the hyperactivity of FIX-Padua. Moreover, the F9 cDNA containing F9-Padua was integrated before the F9 initiation codon by CRISPR\/Cas9 in iPSCs from an HB patient (HB-hiPSCs). Integrated HB-hiPSCs after off-target screening were differentiated into hepatocytes. The FIX activity in the supernatant of integrated hepatocytes showed a 4.2-fold increase and reached 63.64% of the normal level, suggesting a universal treatment for HB patients with various mutations in F9 exons. Overall, our study provides new approaches for the exploration and development of cell-based gene therapy for HB.<\/jats:p>","DOI":"10.3390\/ijms24109013","type":"journal-article","created":{"date-parts":[[2023,5,19]],"date-time":"2023-05-19T10:35:11Z","timestamp":1684492511000},"page":"9013","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["CRISPR-Mediated In Situ Introduction or Integration of F9-Padua in Human iPSCs for Gene Therapy of Hemophilia B"],"prefix":"10.3390","volume":"24","author":[{"given":"Qiyu","family":"Tang","sequence":"first","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiqing","family":"Hu","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4749-9801","authenticated-orcid":false,"given":"Junya","family":"Zhao","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tao","family":"Zhou","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuqing","family":"Tang","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peiyun","family":"Wang","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1929-0784","authenticated-orcid":false,"given":"Rou","family":"Xiao","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Chen","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lingqian","family":"Wu","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6636-6000","authenticated-orcid":false,"given":"Miaojin","family":"Zhou","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9451-8585","authenticated-orcid":false,"given":"Desheng","family":"Liang","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"100007","DOI":"10.1016\/j.rpth.2022.100007","article-title":"Prevalence of selected bleeding and thrombotic events in persons with hemophilia versus the general population: A scoping review","volume":"7","author":"Shapiro","year":"2023","journal-title":"Res. 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