Gene expression in macrophages polarized with conditioned medium from wild-type or Snail1-depleted cancer-activated fibroblasts

ABSTRACT: Snail1 is a transcriptional factor required for activation of cancer-associated fibroblasts (CAF). In a murine model of mammary gland cancer, mice with Snai1 gene deletion presented a greater survival and differences in macrophage differentiation with fewer M2 macrophages. Snail1 was not expressed in macrophages and in vitro polarization of monocytes towards M1 or M2 phenotypes was not altered by Snai1 gene depletion. In contrast, when macrophages were incubated with Snail1-expressing CAF or with conditioned medium derived from these cells, they exhibited a lower cytotoxic capability than when incubated with Snail1 KO (inactive) CAFs. We compared gene expression of macrophages polarized by CAF WT versus CAF KO-conditioned medium with that promoter by IFN gamma and IL4, classical M1 and M2 inducers, respectively. We observed that, compared to inactive fibroblasts, active CAF specifically upregulated the expression of some M2 genes as Arg1 and also of genes normally reduced in M1 polarization, such as Arg2, although the gene pattern differed from that stimulated by IL4. A complete list of these genes is presented here.

ORGANISM(S): Mus musculus

PROVIDER: GSE206404 | GEO | 2023/08/09

REPOSITORIES: GEO