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Functional Human CD141+ Dendritic Cells in Human Immune System Mice

Overview
Journal J Infect Dis
Date 2019 Oct 25
PMID 31647546
Citations 4
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Abstract

Background: For the purpose of studying functional human dendritic cells (DCs) in a humanized mouse model that mimics the human immune system (HIS), a model referred to as HIS mice was established.

Methods: Human immune system mice were made by engrafting NOD/SCID/IL2Rgammanull (NSG) mice with human hematopoietic stem cells (HSCs) following the transduction of genes encoding human cytokines and human leukocyte antigen (HLA)-A2.1 by adeno-associated virus serotype 9 (AAV9) vectors.

Results: Our results indicate that human DC subsets, such as CD141+CD11c+ and CD1c+CD11c+ myeloid DCs, distribute throughout several organs in HIS mice including blood, bone marrow, spleen, and draining lymph nodes. The CD141+CD11c+ and CD1c+CD11c+ human DCs isolated from HIS mice immunized with adenoviruses expressing malaria/human immunodeficiency virus (HIV) epitopes were able to induce the proliferation of malaria/HIV epitopes-specific human CD8+ T cells in vitro. Upregulation of CD1c was also observed in human CD141+ DCs 1 day after immunization with the adenovirus-based vaccines.

Conclusions: Establishment of such a humanized mouse model that mounts functional human DCs enables preclinical assessment of the immunogenicity of human vaccines in vivo.

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Targeted Co-delivery of Tumor Antigen and α-Galactosylceramide to CD141 Dendritic Cells Induces a Potent Tumor Antigen-Specific Human CD8 T Cell Response in Human Immune System Mice.

Huang J, Zhou J, Ghinnagow R, Seki T, Iketani S, Soulard D Front Immunol. 2020; 11:2043.

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