{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,22]],"date-time":"2025-10-22T18:14:45Z","timestamp":1761156885417,"version":"3.41.2"},"reference-count":30,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2020,5,7]],"date-time":"2020-05-07T00:00:00Z","timestamp":1588809600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000900","name":"California Institute for Regenerative Medicine","doi-asserted-by":"publisher","award":["EDUC2\u201008397","TRAN1\u201008519"],"award-info":[{"award-number":["EDUC2\u201008397","TRAN1\u201008519"]}],"id":[{"id":"10.13039\/100000900","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100006108","name":"National Center for Advancing Translational Sciences","doi-asserted-by":"publisher","award":["UL1 TR001860 and KL2 TR001859"],"award-info":[{"award-number":["UL1 TR001860 and KL2 TR001859"]}],"id":[{"id":"10.13039\/100006108","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["The Journal of Gene Medicine"],"published-print":{"date-parts":[[2020,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Tay\u2013Sachs and Sandhoff disease are debilitating genetic diseases that affect the central nervous system leading to neurodegeneration through the accumulation of GM2 gangliosides. There are no cures for these diseases and treatments do not alleviate all symptoms. Hematopoietic stem cell gene therapy offers a promising treatment strategy for delivering wild\u2010type enzymes to affected cells. By genetically modifying hematopoietic stem cells to express wild\u2010type HexA and HexB, systemic delivery of functional enzyme can be achieved.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Primary human hematopoietic stem\/progenitor cells and Tay\u2013Sachs affected cells were used to evaluate the functionality of the vector. An immunodeficient and humanized mouse model of Sandhoff disease was used to evaluate whether the HexA\/HexB lentiviral vector transduced cells were able to improve the phenotypes associated with Sandhoff disease. An immunodeficient NOD\u2010RAG1\u2212\/\u2010IL2\u2212\/\u2212 (NRG) mouse model was used to evaluate whether the HexA\/HexB vector transduced human CD34+ cells were able to engraft and undergo normal multilineage hematopoiesis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>HexA\/HexB lentiviral vector transduced cells demonstrated strong expression of HexA and HexB and restored enzyme activity in Tay\u2013Sachs affected cells. Upon transplantation into a humanized Sandhoff disease mouse model, improved motor and behavioral skills were observed. Decreased GM2 gangliosides were observed in the brains of HexA\/HexB vector transduced cell transplanted mice. Increased peripheral blood levels of HexB was also observed in transplanted mice. Normal hematopoiesis in the peripheral blood and various lymphoid organs was also observed in transplanted NRG mice.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>These results highlight the potential use of stem cell gene therapy as a treatment strategy for Tay\u2013Sachs and Sandhoff disease.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jgm.3205","type":"journal-article","created":{"date-parts":[[2020,4,26]],"date-time":"2020-04-26T23:38:27Z","timestamp":1587944307000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Improvement of motor and behavioral activity in Sandhoff mice transplanted with human CD34+ cells transduced with a HexA\/HexB expressing lentiviral vector"],"prefix":"10.1002","volume":"22","author":[{"given":"Julie","family":"Beegle","sequence":"first","affiliation":[{"name":"University of California Davis  Sacramento CA 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