JOURNAL ARTICLE

M-CSF- and L929-derived macrophages present distinct metabolic profiles with similar inflammatory outcomes

Lauar de Brito Monteiro, Gustavo Gastão Davanzo, Cristhiane Fávero de Aguiar, Felipe Corrêa da Silva, Jessica Rodrigues de Andrade, Ana Campos Codo, Jessica Aparecida da Silva Pereira, Leonardo Pimentel de Freitas, Pedro Manoel Moraes-Vieira
Immunobiology 2020 March 19, : 151935
32201093
Macrophages are essential components of the immune system. Macrophages can be derived from the bone marrow of mice with either recombinant M-CSF or L929 supernatant. Recent literature considers recombinant M-CSF- and L929-derived macrophages as equals, even though L929-derived macrophages are exposed to other substances secreted in the L929 supernatant, and not only M-CSF. Thus, we decided to perform a comparative analysis of both inflammatory and metabolic profiles of macrophages differentiated under the aforementioned conditions, which is relevant for standardization and interpretation of in vitro studies. We observed that, when treated with LPS, L929macs secrete lower levels of proinflammatory cytokines (TNF-α, IL-6, IL12) and present higher glycolysis and oxygen consumption when compared with M-CSFmacs. L929macs also have increased mitochondrial mass, with higher percentage of dysfunctional mitochondria. This sort of information can help direct further studies towards a more specific approach for macrophage generation.

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