iScience (Nov 2018)

Microglia Induce PDGFRB Expression in Glioma Cells to Enhance Their Migratory Capacity

  • Tatjana Wallmann,
  • Xing-Mei Zhang,
  • Majken Wallerius,
  • Sara Bolin,
  • Anne-Laure Joly,
  • Caroline Sobocki,
  • Lina Leiss,
  • Yiwen Jiang,
  • Jonas Bergh,
  • Eric C. Holland,
  • Per Ø. Enger,
  • John Andersson,
  • Fredrik J. Swartling,
  • Hrvoje Miletic,
  • Lene Uhrbom,
  • Robert A. Harris,
  • Charlotte Rolny

Journal volume & issue
Vol. 9
pp. 71 – 83

Abstract

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Summary: High-grade gliomas (HGGs) are the most aggressive and invasive primary brain tumors. The platelet-derived growth factor (PDGF) signaling pathway drives HGG progression, and enhanced expression of PDGF receptors (PDGFRs) is a well-established aberration in a subset of glioblastomas (GBMs). PDGFRA is expressed in glioma cells, whereas PDGFRB is mostly restricted to the glioma-associated stroma. Here we show that the spatial location of TAMMs correlates with the expansion of a subset of tumor cells that have acquired expression of PDGFRB in both mouse and human low-grade glioma and HCGs. Furthermore, M2-polarized microglia but not bone marrow (BM)-derived macrophages (BMDMs) induced PDGFRB expression in glioma cells and stimulated their migratory capacity. These findings illustrate a heterotypic cross-talk between microglia and glioma cells that may enhance the migratory and invasive capacity of the latter by inducing PDGFRB. : Pathophysiology; Molecular Mechanism of Behavior; Immunology; Cancer Subject Areas: Pathophysiology, Molecular Mechanism of Behavior, Immunology, Cancer