Comparison of human macrophages derived from peripheral blood and bone marrow
Comparison of human macrophages derived from peripheral blood and bone marrow
Macrophage differentiation, phenotype, and function have been assessed extensively in vitro by predominantly deriving human macrophages from peripheral blood. It is accepted that there are differences between macrophages isolated from different human tissues; however, the importance of anatomical source for in vitro differentiation and characterization is less clear. Here, phenotype and function were evaluated between human macrophages derived from bone marrow or peripheral blood. Macrophages were differentiated by adherence of heterogenous cell populations or CD14 isolation and polarized with IFNγ and LPS or IL-4 and IL-13 for 48 hours before evaluation of phenotype and phagocytic capacity. The presence of stromal cells in bone marrow heterogenous cultures resulted in a reduction in macrophage purity compared to peripheral blood, which was negated after CD14 isolation. Phenotypically, monocyte-derived macrophages (MDMs) derived from peripheral blood and bone marrow resulted in similar expression of classical and polarized macrophages markers, including CD14, HLA-DR, CD38, and CD40 (increased after IFNγ/LPS), and CD11b and CD206 (elevated after IL-4/IL-13). Functionally, these cells also showed similar levels of Fc-independent and Fc-dependent phagocytosis, although there was a nonsignificant reduction of Fc-dependent phagocytosis in the bone marrow derived macrophages after IFNγ/LPS stimulation. In summary, we have identified that human MDMs differentiated from peripheral blood and bone marrow showed similar characteristics and functionality, suggesting that isolating cells from different anatomical niches does not affect macrophage differentiation after CD14 isolation. Consequently, due to high yield and ready availability peripheral blood derived macrophages are still the most suitable source.
phagocytosis, macrophages, PBMCs, ADCP, bone marrow
714-725
Smith, Hannah L.
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Foxall, Russell B.
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Duriez, Patrick J.
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Teal, Emma L.
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Hoppe, Adam D.
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Kanczler, Janos M.
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Gray, Juliet C.
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Beers, Stephen A.
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5 March 2025
Smith, Hannah L.
5f75b278-0dd4-4039-9f6f-75a96ad94035
Foxall, Russell B.
cfe3a818-a281-4bcb-8889-e1d0b591117c
Duriez, Patrick J.
4cf499bc-007a-43b3-b180-d6e5dc3d151b
Teal, Emma L.
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Hoppe, Adam D.
f13d4a3e-dade-41b6-968e-358fd4548705
Kanczler, Janos M.
eb8db9ff-a038-475f-9030-48eef2b0559c
Gray, Juliet C.
12d5e17c-97bb-4d6d-8fc4-3914b730ed42
Beers, Stephen A.
a02548be-3ffd-41ab-9db8-d6e8c3b499a2
Smith, Hannah L., Foxall, Russell B., Duriez, Patrick J., Teal, Emma L., Hoppe, Adam D., Kanczler, Janos M., Gray, Juliet C. and Beers, Stephen A.
(2025)
Comparison of human macrophages derived from peripheral blood and bone marrow.
The Journal of Immunology, 214 (4), .
(doi:10.1093/jimmun/vkae032).
Abstract
Macrophage differentiation, phenotype, and function have been assessed extensively in vitro by predominantly deriving human macrophages from peripheral blood. It is accepted that there are differences between macrophages isolated from different human tissues; however, the importance of anatomical source for in vitro differentiation and characterization is less clear. Here, phenotype and function were evaluated between human macrophages derived from bone marrow or peripheral blood. Macrophages were differentiated by adherence of heterogenous cell populations or CD14 isolation and polarized with IFNγ and LPS or IL-4 and IL-13 for 48 hours before evaluation of phenotype and phagocytic capacity. The presence of stromal cells in bone marrow heterogenous cultures resulted in a reduction in macrophage purity compared to peripheral blood, which was negated after CD14 isolation. Phenotypically, monocyte-derived macrophages (MDMs) derived from peripheral blood and bone marrow resulted in similar expression of classical and polarized macrophages markers, including CD14, HLA-DR, CD38, and CD40 (increased after IFNγ/LPS), and CD11b and CD206 (elevated after IL-4/IL-13). Functionally, these cells also showed similar levels of Fc-independent and Fc-dependent phagocytosis, although there was a nonsignificant reduction of Fc-dependent phagocytosis in the bone marrow derived macrophages after IFNγ/LPS stimulation. In summary, we have identified that human MDMs differentiated from peripheral blood and bone marrow showed similar characteristics and functionality, suggesting that isolating cells from different anatomical niches does not affect macrophage differentiation after CD14 isolation. Consequently, due to high yield and ready availability peripheral blood derived macrophages are still the most suitable source.
Text
Smith et al Human pMDM v BMDM
- Accepted Manuscript
Text
vkae032
- Version of Record
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Accepted/In Press date: 21 November 2024
Published date: 5 March 2025
Keywords:
phagocytosis, macrophages, PBMCs, ADCP, bone marrow
Identifiers
Local EPrints ID: 506769
URI: http://eprints.soton.ac.uk/id/eprint/506769
ISSN: 0022-1767
PURE UUID: 3df710a1-f159-4c8c-ae5d-11a1a17b7f9b
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Date deposited: 18 Nov 2025 17:39
Last modified: 19 Nov 2025 02:41
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Contributors
Author:
Hannah L. Smith
Author:
Russell B. Foxall
Author:
Patrick J. Duriez
Author:
Emma L. Teal
Author:
Adam D. Hoppe
Author:
Janos M. Kanczler
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