Involvement of Rho/ROCK signalling in small cell lung cancer migration through human brain microvascular endothelial cells.
Small cell lung cancer (SCLC) cells migration across human brain microvascular endothelial cells (HBMECs) is an essential step of brain metastases. Here we investigated signalling pathways in HBMECs contributing to the process. Inhibition of endothelial Rho kinase (ROCK) with Y27632 and overexpression of ROCK dominant-negative mutant prevented SCLC cells, NCI-H209, transendothelial migration and the concomitant changes of tight junction. Conversely, inhibition of phosphatidylinositol 3-kinase (PI3K) and protein kinase C (PKC) had no effects. Furthermore, endothelial RhoA protein was activated during NCI-H209 cells transendothelial migration. Rho/ROCK participated in NCI-H209 cells transendothelial migration through regulating actin cytoskeleton reorganization. These results suggested that Rho/ROCK was required for SCLC cells transendothelial migration.
Li
Bo
B
Department of Developmental Biology, Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, 92 Bei Er Road, Shenyang, Liaoning 110001, PR China.
Zhao
Wei-Dong
WD
Tan
Zhi-Min
ZM
Fang
Wen-Gang
WG
Zhu
Li
L
Chen
Yu-Hua
YH
D000577:Amides / Q000494:pharmacology; D001932:Brain Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology / Q000556:secondary; D018288:Carcinoma, Small Cell / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects / Q000235:genetics; D003599:Cytoskeleton / Q000235:genetics / Q000378:metabolism; D042783:Endothelial Cells / Q000378:metabolism / Q000473:pathology; D004791:Enzyme Inhibitors / Q000494:pharmacology; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects / Q000235:genetics; D005799:Genes, Dominant / Q000235:genetics; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D008175:Lung Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D009362:Neoplasm Metastasis; D009363:Neoplasm Proteins / Q000235:genetics / Q000378:metabolism*; D017346:Protein Serine-Threonine Kinases / Q000037:antagonists & inhibitors / Q000378:metabolism*; D011725:Pyridines / Q000494:pharmacology; D015398:Signal Transduction / Q000187:drug effects / Q000235:genetics; D054460:rho-Associated Kinases
D000577:Amides; D004791:Enzyme Inhibitors; D047908:Intracellular Signaling Peptides and Proteins; D009363:Neoplasm Proteins; D011725:Pyridines; C108830:Y 27632; D017346:Protein Serine-Threonine Kinases; D054460:rho-Associated Kinases