GM-CSF Quantity Has a Selective Effect on Granulocytic vs. Monocytic Myeloid Development and Function

Frontiers in Immunology
Li SunYifan Zhan

Abstract

GM-CSF promotes myeloid differentiation of cultured bone marrow cells into cells of the granulocytic and monocytic lineage; the latter can further differentiate into monocytes/macrophages and dendritic cells. How GM-CSF selects for these different myeloid fates is unresolved. GM-CSF levels can change either iatrogenically (e.g., augmenting leukopoiesis after radiotherapy) or naturally (e.g., during infection or inflammation) resulting in different immunological outcomes. Therefore, we asked whether the dose of GM-CSF may regulate the development of three types of myeloid cells. Here, we showed that GM-CSF acted as a molecular rheostat where the quantity determined which cell type was favored; moreover, the cellular process by which this was achieved was different for each cell type. Thus, low quantities of GM-CSF promoted the granulocytic lineage, mainly through survival. High quantities promoted the monocytic lineage, mainly through proliferation, whereas moderate quantities promoted moDCs, mainly through differentiation. Finally, we demonstrated that monocytes/macrophages generated with different doses of GM-CSF differed in function. We contend that this selective effect of GM-CSF dose on myeloid differentiation and function ...Continue Reading

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Citations

Sep 26, 2019·Frontiers in Immunology·John A Hamilton
Oct 16, 2019·The Journal of Experimental Medicine·John A Hamilton
Jan 11, 2020·Frontiers in Immunology·Usma MunawaraAntonio Ferrante
Jan 30, 2020·American Journal of Physiology. Lung Cellular and Molecular Physiology·Todd M UmsteadE Scott Halstead
Oct 20, 2020·Frontiers in Microbiology·Yoon Jung Hwang, Heejoon Myung
Feb 26, 2021·Frontiers in Pediatrics·Deirdre U SweetmanEleanor J Molloy
Jul 15, 2021·PLoS Pathogens·Adrianne L JennerMorgan Craig

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Datasets Mentioned

BETA
GM-CSF

Methods Mentioned

BETA
flow cytometry
transgenic
FACS

Software Mentioned

FlowJo
GraphPad
Prism

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