PMID- 22797069 OWN - NLM STAT- MEDLINE DCOM- 20130814 LR - 20161125 IS - 1476-5594 (Electronic) IS - 0950-9232 (Linking) VI - 32 IP - 24 DP - 2013 Jun 13 TI - Elevated PLGF contributes to small-cell lung cancer brain metastasis. PG - 2952-62 LID - 10.1038/onc.2012.313 [doi] AB - Brain metastasis (BM) is a major cause of mortality in small-cell lung cancer (SCLC) patients; however, the molecular pathway of SCLC BM remains largely unknown because of a lack of investigation. Here we screen the levels of some candidate-soluble factors in the serum of SCLC patients and find that SCLC patients with high levels of placental growth factor (PLGF) are prone to BM. Using in vitro blood-brain barrier model, we show that PLGF derived from SCLC cells triggers vascular endothelial growth factor receptor-1-Rho-extracellular regulated protein kinase 1/2 signaling axis activation, results in disassembly of tight junction in brain endothelial cells and promotes SCLC cell transendothelial migration. Furthermore, the downregulation of PLGF suppresses SCLC cell metastasis to the brain in an experimental BM model. These data suggest that PLGF is a potential signature of SCLC BM and a prospective therapeutic target for SCLC BM. FAU - Li, B AU - Li B AD - Department of Developmental Biology, Key Laboratory of Cell Biology, Ministry of Public Health and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, China. FAU - Wang, C AU - Wang C FAU - Zhang, Y AU - Zhang Y FAU - Zhao, X Y AU - Zhao XY FAU - Huang, B AU - Huang B FAU - Wu, P F AU - Wu PF FAU - Li, Q AU - Li Q FAU - Li, H AU - Li H FAU - Liu, Y S AU - Liu YS FAU - Cao, L Y AU - Cao LY FAU - Dai, W M AU - Dai WM FAU - Fang, W G AU - Fang WG FAU - Shang, D S AU - Shang DS FAU - Cao, L AU - Cao L FAU - Zhao, W D AU - Zhao WD FAU - Chen, Y H AU - Chen YH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120716 PL - England TA - Oncogene JT - Oncogene JID - 8711562 RN - 0 (PGF protein, human) RN - 0 (Pgf protein, mouse) RN - 0 (Pregnancy Proteins) RN - 144589-93-5 (Placenta Growth Factor) RN - EC 2.7.10.1 (Vascular Endothelial Growth Factor Receptor-1) RN - EC 2.7.11.1 (rho-Associated Kinases) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) SB - IM MH - Animals MH - Brain/pathology MH - Brain Neoplasms/*secondary MH - Cell Line, Tumor MH - Endothelial Cells/pathology MH - Enzyme Activation MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Female MH - Humans MH - Lung Neoplasms/*blood/*pathology MH - Male MH - Mice MH - Placenta Growth Factor MH - Pregnancy Proteins/*blood MH - Signal Transduction MH - Small Cell Lung Carcinoma/*blood/*pathology MH - Tight Junctions/metabolism/pathology MH - Transendothelial and Transepithelial Migration MH - Vascular Endothelial Growth Factor Receptor-1/metabolism MH - rho-Associated Kinases/metabolism EDAT- 2012/07/17 06:00 MHDA- 2013/08/15 06:00 CRDT- 2012/07/17 06:00 PHST- 2012/07/17 06:00 [entrez] PHST- 2012/07/17 06:00 [pubmed] PHST- 2013/08/15 06:00 [medline] AID - onc2012313 [pii] AID - 10.1038/onc.2012.313 [doi] PST - ppublish SO - Oncogene. 2013 Jun 13;32(24):2952-62. doi: 10.1038/onc.2012.313. Epub 2012 Jul 16.