Journal
SEMINARS IN FETAL & NEONATAL MEDICINE
Volume 22, Issue 6, Pages 410-414Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.siny.2017.05.003
Keywords
In-utero transplantation; In-utero gene therapy; Fetal immunologic tolerance; Prenatal stem cell therapy; Prenatal gene therapy; Stem cell niche; Hematopoietic stem cells
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Advances in our understanding of stem cells, gene editing, prenatal imaging and fetal interventions have opened up new opportunities for the treatment of congenital diseases either through in-utero stem cell transplantation or in-utero gene therapy. Improvements in ultrasound-guided access to the fetal vasculature have also enhanced the safety and efficacy of cell delivery. The fetal environment offers accessible stem cell niches, localized cell populations with large proliferative potential, and an immune system that is able to acquire donor-specific tolerance. In-utero therapy seeks to take advantage of these factors and has the potential to cure diseases prior to the onset of symptoms, a strategy that offers substantial social and economic benefits. In this article, we examine previous studies in animal models as well as clinical attempts at in-utero therapy. We also discuss the barriers to successful in-utero therapy and future strategies for overcoming these obstacles. (C) 2017 Elsevier Ltd. All rights reserved.
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