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Human neutrophil development and functionality are enabled in a humanized mouse model.


ABSTRACT: Mice with a functional human immune system serve as an invaluable tool to study the development and function of the human immune system in vivo. A major technological limitation of all current humanized mouse models is the lack of mature and functional human neutrophils in circulation and tissues. To overcome this, we generated a humanized mouse model named MISTRGGR, in which the mouse granulocyte colony-stimulating factor (G-CSF) was replaced with human G-CSF and the mouse G-CSF receptor gene was deleted in existing MISTRG mice. By targeting the G-CSF cytokine-receptor axis, we dramatically improved the reconstitution of mature circulating and tissue-infiltrating human neutrophils in MISTRGGR mice. Moreover, these functional human neutrophils in MISTRGGR are recruited upon inflammatory and infectious challenges and help reduce bacterial burden. MISTRGGR mice represent a unique mouse model that finally permits the study of human neutrophils in health and disease.

SUBMITTER: Zheng Y 

PROVIDER: S-EPMC9618085 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Human neutrophil development and functionality are enabled in a humanized mouse model.

Zheng Yunjiang Y   Sefik Esen E   Astle John J   Karatepe Kutay K   Öz Hasan H HH   Solis Angel G AG   Jackson Ruaidhrí R   Luo Hongbo R HR   Bruscia Emanuela M EM   Halene Stephanie S   Shan Liang L   Flavell Richard A RA  

Proceedings of the National Academy of Sciences of the United States of America 20221021 43


Mice with a functional human immune system serve as an invaluable tool to study the development and function of the human immune system in vivo. A major technological limitation of all current humanized mouse models is the lack of mature and functional human neutrophils in circulation and tissues. To overcome this, we generated a humanized mouse model named MISTRGGR, in which the mouse granulocyte colony-stimulating factor (G-CSF) was replaced with human G-CSF and the mouse G-CSF receptor gene w  ...[more]

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