Human neutrophil development and functionality are enabled in a humanized mouse model
- PMID: 36269862
- PMCID: PMC9618085
- DOI: 10.1073/pnas.2121077119
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.
Keywords: bacterial infection; humanized mouse; innate immunity; neutrophils.
Conflict of interest statement
Competing interest statement: R.A.F. is an advisor to Glaxo Smith Kline, Zai Labs, and Ventus Therapeutics.
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Comment in
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A humanized "new-trophil" mouse to study early inflammatory processes.Proc Natl Acad Sci U S A. 2022 Dec 6;119(49):e2216699119. doi: 10.1073/pnas.2216699119. Epub 2022 Nov 29. Proc Natl Acad Sci U S A. 2022. PMID: 36442110 Free PMC article. No abstract available.
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