Platelet-Derived Growth Factor-D Activates Complement System to Propagate Macrophage Polarization and Neovascularization.
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ABSTRACT: Platelet-derived growth factor-D (PDGF-D) is highly expressed in immune cells. However, the potential role of PDGF-D in immune system remains thus far unclear. Here, we reveal a novel function of PDGF-D in activating both classical and alternative complement pathways that markedly increase chemokine and cytokine responses to promote macrophage polarization. Pharmacological targeting of the complement C3a receptor using SB290157 alleviated PDGF-D-induced neuroinflammation by blocking macrophage polarization and inhibited pathological choroidal neovascularization. Our study thus suggests that therapeutic strategies targeting both PDGF-D and the complement system may open up new possibilities for the treatment of neovascular diseases.
SUBMITTER: Xiong Z
PROVIDER: S-EPMC8207142 | biostudies-literature |
REPOSITORIES: biostudies-literature
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