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A Humanized Mouse Model Generated Using Surplus Neonatal Tissue
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DOI：10.1016/j.stemcr.2018.02.011.png)
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Here, we describe the NeoThy humanized mouse model created using non-fetal human tissue sources, cryopreserved neonatal thymus and umbilical cord blood hematopoietic stem cells (HSCs). Conventional humanized mouse models are made by engrafting human fetal thymus and HSCs into immunocompromised mice. These mice harbor functional human T cells that have matured in the presence of human self-peptides and human leukocyte antigen molecules. Neonatal thymus tissue is more abundant and developmentally mature and allows for creation of up to similar to 50-fold more mice per donor compared with fetal tissue models. The NeoThy has equivalent frequencies of engrafted human immune cells compared with fetal tissue humanized mice and exhibits T cell function in assays of ex vivo cell proliferation, interferon gamma secretion, and in vivo graft infiltration. The NeoThy model may provide significant advantages for induced pluripotent stem cell immunogenicity studies, while bypassing the requirement for fetal tissue.
Keyword:
HEMATOPOIETIC STEM-CELLS
IMMUNE-SYSTEM
MICE
FETAL
ENGRAFTMENT
RESPONSES
RECONSTITUTION
REJECTION
THYMUS
BLOOD
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