| First Author | Kubala MH | Year | 2018 |
| Journal | Cell Rep | Volume | 25 |
| Issue | 8 | Pages | 2177-2191.e7 |
| PubMed ID | 30463014 | Mgi Jnum | J:271127 |
| Mgi Id | MGI:6278823 | Doi | 10.1016/j.celrep.2018.10.082 |
| Citation | Kubala MH, et al. (2018) Plasminogen Activator Inhibitor-1 Promotes the Recruitment and Polarization of Macrophages in Cancer. Cell Rep 25(8):2177-2191.e7 |
| abstractText | Plasminogen activator inhibitor-1 (PAI-1) has a pro-tumorigenic function via its pro-angiogenic and anti-apoptotic activities. Here, we demonstrate that PAI-1 promotes the recruitment and M2 polarization of monocytes/macrophages through different structural domains. Its LRP1 interacting domain regulated macrophage migration, while its C-terminal uPA interacting domain promoted M2 macrophage polarization through activation of p38MAPK and nuclear factor kappaB (NF-kappaB) and induction of an autocrine interleukin (IL)-6/STAT3 activation pathway. We then show in several experiments in mice that expression of PAI-1 is associated with increased tumorigenicity, increased presence of M2 macrophages, higher levels of IL-6, and increased STAT3 phosphorylation in macrophages. Strong positive correlations between PAI-1, IL-6, and CD163 (M2 marker) expression were also found by meta-analysis of transcriptome data in many human cancers. Altogether, these data provide evidence for a mechanism explaining the paradoxical pro-tumorigenic function of PAI-1 in cancer. |
