Platelet-derived growth factor-B and -C and active α-receptors in medulloblastoma cells
2002 (English)In: Biochemical and Biophysical Research Communications - BBRC, ISSN 0006-291X, E-ISSN 1090-2104, Vol. 296, no 3, 604-611 p.Article in journal (Refereed) Published
The malignant childhood brain tumor medulloblastoma belongs to the group of primitive neuroectodermal tumours (PNETs). Medulloblastomas are thought to arise from remnants of the transient external germinal layer in the cerebellum. Proliferation, differentiation, and motility of cells in the central nervous system are regulated by growth factors, e.g., platelet-derived growth factor (PDGF). Recently, it was shown that higher level of PDGF α-receptor expression is characteristic of metastatic medulloblastomas. We have investigated five medulloblastoma/PNET cell lines and found that the PDGF α-receptor is actively signalling in most of them, an activity most likely driven by endogenously produced PDGF-C. PDGF-C is normally present in cells of the developing external germinal layer and our results are consistent with the idea that medulloblastomas are derived from such cells undergoing early neuronal differentiation. Moreover, the expression of PDGF and its receptors was associated with neuronal characteristics, but not with high levels of c-myc expression in the medullablastoma cells.
Place, publisher, year, edition, pages
2002. Vol. 296, no 3, 604-611 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-62796DOI: 10.1016/S0006-291X(02)00917-8PubMedID: 12176024OAI: oai:DiVA.org:uu-62796DiVA: diva2:90707