Dclre1c-Mutation-Induced Immunocompromised Mice Are a Novel Model for Human Xenograft Research.
Biomolecules
; 14(2)2024 Feb 02.
Article
in En
| MEDLINE
| ID: mdl-38397417
ABSTRACT
Severe combined immunodeficient (SCID) mice serve as a critical model for human xenotransplantation studies, yet they often suffer from low engraftment rates and susceptibility to graft-versus-host disease (GVHD). Moreover, certain SCID strains demonstrate 'immune leakage', underscoring the need for novel model development. Here, we introduce an SCID mouse model with a targeted disruption of the dclre1c gene, encoding Artemis, which is essential for V(D)J recombination and DNA repair during T cell receptor (TCR) and B cell receptor (BCR) assembly. Artemis deficiency precipitates a profound immunodeficiency syndrome, marked by radiosensitivity and compromised T and B lymphocyte functionality. Utilizing CRISPR/Cas9-mediated gene editing, we generated dclre1c-deficient mice with an NOD genetic background. These mice exhibited a radiosensitive SCID phenotype, with pronounced DNA damage and defective thymic, splenic and lymph node development, culminating in reduced T and B lymphocyte populations. Notably, both cell lines and patient-derived tumor xenografts were successfully engrafted into these mice. Furthermore, the human immune system was effectively rebuilt following peripheral blood mononuclear cells (PBMCs) transplantation. The dclre1c-knockout NOD mice described herein represent a promising addition to the armamentarium of models for xenotransplantation, offering a valuable platform for advancing human immunobiological research.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Transplantation, Heterologous
/
Leukocytes, Mononuclear
/
Nuclear Proteins
/
Immunocompromised Host
/
Endonucleases
Limits:
Animals
/
Humans
Language:
En
Journal:
Biomolecules
Year:
2024
Document type:
Article
Affiliation country:
China