PDGF-BB modulates hematopoiesis and tumor angiogenesis by inducing erythropoietin production in stromal cells

Dahl Ejby Jensen, Lasse (author): Linköpings universitet,Kardiologi,Hälsouniversitetet

Cao, Yihai (author): Linköpings universitet,Avdelningen för kardiovaskulär medicin,Hälsouniversitetet

(creator_code:org_t)

2011-12-04
2012
English.
In: Nature Medicine. - : Nature Publishing Group. - 1078-8956 .- 1546-170X. ; 18:1, s. 100-110

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; http://kipublication...; show less...

Abstract Subject headings

The platelet-derived growth factor (PDGF) signaling system contributes to tumor angiogenesis and vascular remodeling. Here we show in mouse tumor models that PDGF-BB induces erythropoietin (EPO) mRNA and protein expression by targeting stromal and perivascular cells that express PDGF receptor-beta (PDGFR-beta). Tumor-derived PDGF-BB promoted tumor growth, angiogenesis and extramedullary hematopoiesis at least in part through modulation of EPO expression. Moreover, adenoviral delivery of PDGF-BB to tumor-free mice increased both EPO production and erythropoiesis, as well as protecting from irradiation-induced anemia. At the molecular level, we show that the PDGF-BB PDGFR-beta signaling system activates the EPO promoter, acting in part through transcriptional regulation by the transcription factor Atf3, possibly through its association with two additional transcription factors, c-Jun and Sp1. Our findings suggest that PDGF-BB-induced EPO promotes tumor growth through two mechanisms: first, paracrine stimulation of tumor angiogenesis by direct induction of endothelial cell proliferation, migration, sprouting and tube formation, and second, endocrine stimulation of extramedullary hematopoiesis leading to increased oxygen perfusion and protection against tumor-associated anemia.

By the author/editor: Xue, Yuan; Lim, Sharon; Yang, Yunlong; Wang, Zongwei; Dahl Ejby Jensen ...; Hedlund, Eva-Mar ...; show more...; Andersson, Patri ...; Sasahara, Masaki ...; Larsson, Ola; Galter, Dagmar; Gao, Renhai; Hosaka, Kayoko; Cao, Yihai; show less...

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