PMID- 23788430 OWN - NLM STAT- MEDLINE DCOM- 20140615 LR - 20211021 IS - 1477-9137 (Electronic) IS - 0021-9533 (Print) IS - 0021-9533 (Linking) VI - 126 IP - Pt 16 DP - 2013 Aug 15 TI - Non-invasive neural stem cells become invasive in vitro by combined FGF2 and BMP4 signaling. PG - 3533-40 LID - 10.1242/jcs.125757 [doi] AB - Neural stem cells (NSCs) typically show efficient self-renewal and selective differentiation. Their invasion potential, however, is not well studied. In this study, Sox2-positive NSCs from the E14.5 rat cortex were found to be non-invasive and showed only limited migration in vitro. By contrast, FGF2-expanded NSCs showed a strong migratory and invasive phenotype in response to the combination of FGF2 and BMP4. Invasive NSCs expressed Podoplanin (PDPN) and p75NGFR (Ngfr) at the plasma membrane after exposure to FGF2 and BMP4. FGF2 and BMP4 together upregulated the expression of Msx1, Snail1, Snail2, Ngfr, which are all found in neural crest (NC) cells during or after epithelial-mesenchymal transition (EMT), but not in forebrain stem cells. Invasive cells downregulated the expression of Olig2, Sox10, Egfr, Pdgfra, Gsh1/Gsx1 and Gsh2/Gsx2. Migrating and invasive NSCs had elevated expression of mRNA encoding Pax6, Tenascin C (TNC), PDPN, Hey1, SPARC, p75NGFR and Gli3. On the basis of the strongest upregulation in invasion-induced NSCs, we defined a group of five key invasion-related genes: Ngfr, Sparc, Snail1, Pdpn and Tnc. These genes were co-expressed and upregulated in seven samples of glioblastoma multiforme (GBM) compared with normal human brain controls. Induction of invasion and migration led to low expression of differentiation markers and repressed proliferation in NSCs. Our results indicate that normal forebrain stem cells have the inherent ability to adopt a glioma-like invasiveness. The results provide a novel in vitro system to study stem cell invasion and a novel glioma invasion model: tumoral abuse of the developmental dorsoventral identity regulation. FAU - Sailer, Martin H M AU - Sailer MH AD - Department of Biomedicine, Brain Tumor Biology Laboratory, Klingelbergstrasse 50/70, CH-4056 Basel, Switzerland. martin.sailer@usb.ch FAU - Gerber, Alexandra AU - Gerber A FAU - Tostado, Cristobal AU - Tostado C FAU - Hutter, Gregor AU - Hutter G FAU - Cordier, Dominik AU - Cordier D FAU - Mariani, Luigi AU - Mariani L FAU - Ritz, Marie-Francoise AU - Ritz MF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130620 PL - England TA - J Cell Sci JT - Journal of cell science JID - 0052457 RN - 0 (Bone Morphogenetic Protein 4) RN - 103107-01-3 (Fibroblast Growth Factor 2) SB - IM MH - Animals MH - Bone Morphogenetic Protein 4/genetics/*metabolism MH - Cell Movement/physiology MH - Female MH - Fibroblast Growth Factor 2/genetics/*metabolism MH - Humans MH - Immunohistochemistry MH - Neural Stem Cells/*cytology/*metabolism MH - Pregnancy MH - Rats MH - Rats, Sprague-Dawley MH - Signal Transduction PMC - PMC3744023 OTO - NOTNLM OT - BMP4 OT - FGF2 OT - Invasion OT - Migration OT - Neural stem cell EDAT- 2013/06/22 06:00 MHDA- 2014/06/16 06:00 PMCR- 2014/08/15 CRDT- 2013/06/22 06:00 PHST- 2013/06/22 06:00 [entrez] PHST- 2013/06/22 06:00 [pubmed] PHST- 2014/06/16 06:00 [medline] PHST- 2014/08/15 00:00 [pmc-release] AID - jcs.125757 [pii] AID - 10.1242/jcs.125757 [doi] PST - ppublish SO - J Cell Sci. 2013 Aug 15;126(Pt 16):3533-40. doi: 10.1242/jcs.125757. Epub 2013 Jun 20.