Abstract
Mice harbouring a humanized liver represent a powerful tool for translating preclinical studies of drug metabolism and pharmacokinetics into humans, as well as the exploitation of basic studies on liver pathophysiology including hepatitis C virus (HCV) infection. Human adult stem cells injected into immunocompetent mice at preimmune stages of development, generate chimeric animals harbouring a liver with relatively discrete foci of human hepatocyte-like cells. In this study, we have evaluated whether similar protocol of xenotransplantation in the presence of selective pressure might lead to a higher human-intomouse liver repopulation, leading to a relevant improvement of liver function. Human CD34+/CD133+ cells were microinjected into blastocysts from genetically-modified mice committed to develop a lethal hepatopathy, due to the absence of the enzyme fumarylacetoacetate hydrolase (FAH). Following xenotransplantation, mouse survival was followed over time and histochemical evidence of liverchimerism was assessed. The survival expectancy of seven out of 21 intrablastocyst xenotransplanted FAH knockout (Fah-/-) mice was significantly higher as compared with non-xenotransplanted mice. Several nodules of human hepatocyte-like cells were revealed by immunohistochemistry in the liver of rescued mice. Our data positively support the hypothesis that preimmune xenotransplantation of human stem cells into immunocompetent mice harbouring a lethal hepatic disease might lead to a functionally relevant human-mouse liver chimerism and marks a significant advancement towards theestablishment of a novel translational preclinical model for liver diseases.
| Original language | English |
|---|---|
| Pages (from-to) | 280-286 |
| Number of pages | 7 |
| Journal | Laboratory Animals |
| Volume | 46 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2012 |
Fingerprint
Keywords
- Fah-/- mice
- Human stem cells
- Humanized mice
- NTBC
- Xenotransplantation
ASJC Scopus subject areas
- Animal Science and Zoology
- veterinary(all)
Cite this
Intrablastocyst injection with human CD34+/CD133+ cells increase survival of immunocompetent fumarylacetoacetate hydrolase knockout mice. / Marra, Emanuele; Turrini, Paolo; Tripodi, Marco; Ciliberto, Gennaro; Padron, Julio; Aurisicchio, Luigi.
In: Laboratory Animals, Vol. 46, No. 4, 2012, p. 280-286.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Intrablastocyst injection with human CD34+/CD133+ cells increase survival of immunocompetent fumarylacetoacetate hydrolase knockout mice
AU - Marra, Emanuele
AU - Turrini, Paolo
AU - Tripodi, Marco
AU - Ciliberto, Gennaro
AU - Padron, Julio
AU - Aurisicchio, Luigi
PY - 2012
Y1 - 2012
N2 - Mice harbouring a humanized liver represent a powerful tool for translating preclinical studies of drug metabolism and pharmacokinetics into humans, as well as the exploitation of basic studies on liver pathophysiology including hepatitis C virus (HCV) infection. Human adult stem cells injected into immunocompetent mice at preimmune stages of development, generate chimeric animals harbouring a liver with relatively discrete foci of human hepatocyte-like cells. In this study, we have evaluated whether similar protocol of xenotransplantation in the presence of selective pressure might lead to a higher human-intomouse liver repopulation, leading to a relevant improvement of liver function. Human CD34+/CD133+ cells were microinjected into blastocysts from genetically-modified mice committed to develop a lethal hepatopathy, due to the absence of the enzyme fumarylacetoacetate hydrolase (FAH). Following xenotransplantation, mouse survival was followed over time and histochemical evidence of liverchimerism was assessed. The survival expectancy of seven out of 21 intrablastocyst xenotransplanted FAH knockout (Fah-/-) mice was significantly higher as compared with non-xenotransplanted mice. Several nodules of human hepatocyte-like cells were revealed by immunohistochemistry in the liver of rescued mice. Our data positively support the hypothesis that preimmune xenotransplantation of human stem cells into immunocompetent mice harbouring a lethal hepatic disease might lead to a functionally relevant human-mouse liver chimerism and marks a significant advancement towards theestablishment of a novel translational preclinical model for liver diseases.
AB - Mice harbouring a humanized liver represent a powerful tool for translating preclinical studies of drug metabolism and pharmacokinetics into humans, as well as the exploitation of basic studies on liver pathophysiology including hepatitis C virus (HCV) infection. Human adult stem cells injected into immunocompetent mice at preimmune stages of development, generate chimeric animals harbouring a liver with relatively discrete foci of human hepatocyte-like cells. In this study, we have evaluated whether similar protocol of xenotransplantation in the presence of selective pressure might lead to a higher human-intomouse liver repopulation, leading to a relevant improvement of liver function. Human CD34+/CD133+ cells were microinjected into blastocysts from genetically-modified mice committed to develop a lethal hepatopathy, due to the absence of the enzyme fumarylacetoacetate hydrolase (FAH). Following xenotransplantation, mouse survival was followed over time and histochemical evidence of liverchimerism was assessed. The survival expectancy of seven out of 21 intrablastocyst xenotransplanted FAH knockout (Fah-/-) mice was significantly higher as compared with non-xenotransplanted mice. Several nodules of human hepatocyte-like cells were revealed by immunohistochemistry in the liver of rescued mice. Our data positively support the hypothesis that preimmune xenotransplantation of human stem cells into immunocompetent mice harbouring a lethal hepatic disease might lead to a functionally relevant human-mouse liver chimerism and marks a significant advancement towards theestablishment of a novel translational preclinical model for liver diseases.
KW - Fah-/- mice
KW - Human stem cells
KW - Humanized mice
KW - NTBC
KW - Xenotransplantation
UR - http://www.scopus.com/inward/record.url?scp=84872479573&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872479573&partnerID=8YFLogxK
U2 - 10.1258/la.2012.012038
DO - 10.1258/la.2012.012038
M3 - Article
VL - 46
SP - 280
EP - 286
JO - Laboratory Animals
JF - Laboratory Animals
SN - 0023-6772
IS - 4
ER -