Research Project
Grant-in-Aid for Scientific Research (C)
We has shown that sphingosine kinase(SPHK) 1 activity and protein expression regulated oxaliplatin(L-OHP) sensitivity in human colon cancer cells. In L-OHP resistant human colon cancer cell lines, SPHK1, CD44, endogenous phosphorylated-Akt and phosphorylated-ERK levels were much higher than those of sensitive cells. The elevation of CD44 protein level was abolished by the inhibition of ERK phosphorylation. The exogenous stimulation with sphingosine 1-phosphate(S1P) induced increase of ERK phosphorylation and CD44 protein expression in HCT116 cells. These S1P-induced increases were also suppressed by MEK inhibitor. These findings indicate that SPHK1 and its product, S1P, contribute to the regulation of CD44 protein expression through ERK signaling pathway in human colon cancer cells.
All 2011 2010 2009
All Journal Article (30 results) (of which Peer Reviewed: 29 results) Presentation (31 results)
NEUROCHEM. RES
Volume: 36 Pages: 1304-1313
Acta-Molecular and Cell Biology of Lipids
Volume: 1811 Pages: 119-128
FASEB J
Volume: 25 Pages: 1133-1144
Anti-Cancer Drugs
Volume: 22 Pages: 402-408
Chem. Res. Toxicol.
Volume: 24 Pages: 1845-1852
J. CELL. BIOCHEM.
Volume: 112 Pages: 3449-3458
BIOCHEM. BIOPHYS. RES. COMMUN.
Volume: 415 Pages: 168-173
Biochim.Biophys.Acta
FASEB J.
Chem.Res.Toxicol.
J.Cell Biochem.
Biochem.Biophys.Res.Commun.
Neurochem.Res.
Biochim. Biophys. Acta
Cardiovasc. Res.
Volume: 85 Pages: 484-493
120001939472
Cellular Biochem
Volume: 109 Pages: 375-382
J. Neurochem
Volume: 112 Pages: 511-520
PLOS ONE
Volume: 5(11) Pages: 1-13
120002753724
J. Neurochem.
J. Cellular Biochem.
Volume: 5 Pages: 1-13
Cardiovasc.Res. 85
Pages: 494-502
J. Biol. Chem.
Volume: 284 Pages: 10422-10432
Volume: 1789 Pages: 675-762
Nagoya J. Med. Sci.
Volume: 71 Pages: 127-136
Biochim.Biophys.Acta 1789
Pages: 675-762
J.Biol.Chem. 284
Pages: 10422-10432