Article (Scientific journals)
High Dose Versus Low Dose Syngeneic Hepatocyte Transplantation in Pex1-G844D NMRI Mouse Model is Safe but Does Not Achieve Long Term Engraftment.
Demaret, Tanguy; Evraerts, Jonathan; Ravau, Joachim et al.
2020In Cells, 10 (1), p. 1 - 12
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Keywords :
A; PEX1 c.2528G>; PEX1 p.Gly843Asp; Zellweger spectrum disorder; mouse model; oxysterols; peroxisome biogenesis disorder; Biomarkers; Animals; Biomarkers/metabolism; Humans; Liver/metabolism; Liver/pathology; Male; Mice; Peroxisomes/metabolism; Phenotype; Disease Models, Animal; Hepatocytes/cytology; Hepatocytes/transplantation; Zellweger Syndrome/metabolism; Zellweger Syndrome/pathology; PEX1 c.2528G>A; Hepatocytes; Liver; Peroxisomes; Zellweger Syndrome; Medicine (all); General Medicine
Abstract :
[en] Genetic alterations in PEX genes lead to peroxisome biogenesis disorder. In humans, they are associated with Zellweger spectrum disorders (ZSD). No validated treatment has been shown to modify the dismal natural history of ZSD. Liver transplantation (LT) improved clinical and biochemical outcomes in mild ZSD patients. Hepatocyte transplantation (HT), developed to overcome LT limitations, was performed in a mild ZSD 4-year-old child with encouraging short-term results. Here, we evaluated low dose (12.5 million hepatocytes/kg) and high dose (50 million hepatocytes/kg) syngeneic male HT via intrasplenic infusion in the Pex1-G844D NMRI mouse model which recapitulates a mild ZSD phenotype. HT was feasible and safe in growth retarded ZSD mice. Clinical (weight and food intake) and biochemical parameters (very long-chain fatty acids, abnormal bile acids, etc.) were in accordance with ZSD phenotype but they were not robustly modified by HT. As expected, one third of the infused cells were detected in the liver 24 h post-HT. No liver nor spleen microchimerism was detected after 7, 14 and 30 days. Future optimizations are required to improve hepatocyte engraftment in Pex1-G844D NMRI mouse liver. The mouse model exhibited the robustness required for ZSD liver-targeted therapies evaluation.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Demaret, Tanguy  ;  Université de Liège - ULiège > Faculté de Médecine > Mast. spéc. gén. clin. ; Laboratoire d'Hépatologie Pédiatrique et Thérapie Cellulaire, Unité PEDI, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Evraerts, Jonathan;  Laboratoire d'Hépatologie Pédiatrique et Thérapie Cellulaire, Unité PEDI, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Ravau, Joachim;  Laboratoire d'Hépatologie Pédiatrique et Thérapie Cellulaire, Unité PEDI, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Roumain, Martin ;  Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Muccioli, Giulio G ;  Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Najimi, Mustapha ;  Laboratoire d'Hépatologie Pédiatrique et Thérapie Cellulaire, Unité PEDI, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Sokal, Etienne M ;  Laboratoire d'Hépatologie Pédiatrique et Thérapie Cellulaire, Unité PEDI, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
Language :
English
Title :
High Dose Versus Low Dose Syngeneic Hepatocyte Transplantation in Pex1-G844D NMRI Mouse Model is Safe but Does Not Achieve Long Term Engraftment.
Publication date :
December 2020
Journal title :
Cells
eISSN :
2073-4409
Publisher :
MDPI, Switzerland
Volume :
10
Issue :
1
Pages :
1 - 12
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 25 May 2022

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