TY - JOUR
T1 - In Utero Gene Therapy (IUGT) Using GLOBE Lentiviral Vector Phenotypically Corrects the Heterozygous Humanised Mouse Model and Its Progress Can Be Monitored Using MRI Techniques
AU - Shangaris, Panicos
AU - Loukogeorgakis, Stavros P.
AU - Subramaniam, Sindhu
AU - Flouri, Christina
AU - Jackson, Laurence H.
AU - Wang, Wei
AU - Blundell, Michael P.
AU - Liu, Shanrun
AU - Eaton, Simon
AU - Bakhamis, Nahla
AU - Ramachandra, Durrgah Latchumi
AU - Maghsoudlou, Panayiotis
AU - Urbani, Luca
AU - Waddington, Simon N.
AU - Eddaoudi, Ayad
AU - Archer, Joy
AU - Antoniou, Michael N.
AU - Stuckey, Daniel J.
AU - Schmidt, Manfred
AU - Thrasher, Adrian J.
AU - Ryan, Thomas M.
AU - Coppi, Paolo De
AU - David, Anna L.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - In utero gene therapy (IUGT) to the fetal hematopoietic compartment could be used to treat congenital blood disorders such as β-thalassemia. A humanised mouse model of β-thalassemia was used, in which heterozygous animals are anaemic with splenomegaly and extramedullary hematopoiesis. Intrahepatic in utero injections of a β globin-expressing lentiviral vector (GLOBE), were performed in fetuses at E13.5 of gestation. We analysed animals at 12 and 32 weeks of age, for vector copy number in bone marrow, peripheral blood liver and spleen and we performed integration site analysis. Compared to noninjected heterozygous animals IUGT normalised blood haemoglobin levels and spleen weight. Integration site analysis showed polyclonality. The left ventricular ejection fraction measured using magnetic resonance imaging (MRI) in treated heterozygous animals was similar to that of normal non-β-thalassemic mice but significantly higher than untreated heterozygous thalassemia mice suggesting that IUGT ameliorated poor cardiac function. GLOBE LV-mediated IUGT normalised the haematological and anatomical phenotype in a heterozygous humanised model of β-thalassemia.
AB - In utero gene therapy (IUGT) to the fetal hematopoietic compartment could be used to treat congenital blood disorders such as β-thalassemia. A humanised mouse model of β-thalassemia was used, in which heterozygous animals are anaemic with splenomegaly and extramedullary hematopoiesis. Intrahepatic in utero injections of a β globin-expressing lentiviral vector (GLOBE), were performed in fetuses at E13.5 of gestation. We analysed animals at 12 and 32 weeks of age, for vector copy number in bone marrow, peripheral blood liver and spleen and we performed integration site analysis. Compared to noninjected heterozygous animals IUGT normalised blood haemoglobin levels and spleen weight. Integration site analysis showed polyclonality. The left ventricular ejection fraction measured using magnetic resonance imaging (MRI) in treated heterozygous animals was similar to that of normal non-β-thalassemic mice but significantly higher than untreated heterozygous thalassemia mice suggesting that IUGT ameliorated poor cardiac function. GLOBE LV-mediated IUGT normalised the haematological and anatomical phenotype in a heterozygous humanised model of β-thalassemia.
UR - http://www.scopus.com/inward/record.url?scp=85070888464&partnerID=8YFLogxK
U2 - 10.1038/s41598-019-48078-4
DO - 10.1038/s41598-019-48078-4
M3 - Article
SN - 2045-2322
VL - 9
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 11592
ER -