Document Detail


p38MAPK inhibitor SB203580 sensitizes human SNU-C4 colon cancer cells to exisulind-induced apoptosis.
MedLine Citation:
PMID:  17016604     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Sulindac sulfone (exisulind), is a promising anticancer agent because of its ability to induce apoptosis in a variety of malignant cell types and its minimal toxicity to normal cells. The induction of apoptosis is thought to account for the growth inhibitory effect of exisulind. The mitogen-activated protein kinase (MAPK) cascade has been implicated in the regulation of apoptosis in response to exisulind. With human SNU-C4 colon cancer cells that were much more resistant to exisulind than other colon cancer cells, in this study, we investigated whether the modulation of MAPK activity by using selective MAPK inhibitors can contribute to sensitizing SNU-C4 cells to exisulind. Exisulind (400 and 600 microM) slightly increased the phosphorylation of pERK1/2 but pretreatment with the pERK1/2 inhibitor PD98059 did not significantly change the apoptotic response of SNU-C4 cells. The same doses of exisulind increased the phosphorylation of p38MAPK, and pretreatment with the p38MAPK inhibitor SB203580 significantly potentiated growth inhibition and apoptosis induced by exisulind in SNU-C4 cells. We further found that apoptosis induced by a combination of exisulind and SB203580 was mediated through caspase activation. Collectively, our findings indicate that selective p38MAPK inhibitors potentiate apoptosis induction by exisulind in SNU-C4 cells. Such combinations may provide a more effective and less toxic strategy for the prevention or treatment of colon cancer.
Authors:
Soo-Jeong Lim; Young-Ju Lee; Eunmyong Lee
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Oncology reports     Volume:  16     ISSN:  1021-335X     ISO Abbreviation:  Oncol. Rep.     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-10-03     Completed Date:  2007-01-09     Revised Date:  2013-06-03    
Medline Journal Info:
Nlm Unique ID:  9422756     Medline TA:  Oncol Rep     Country:  Greece    
Other Details:
Languages:  eng     Pagination:  1131-5     Citation Subset:  IM    
Affiliation:
Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Korea. sjlim@sejong.ac.kr
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MeSH Terms
Descriptor/Qualifier:
Antineoplastic Combined Chemotherapy Protocols / pharmacology*
Apoptosis / drug effects*
Colonic Neoplasms / drug therapy*,  enzymology,  pathology
Flavonoids / pharmacology
HCT116 Cells
Humans
Imidazoles / administration & dosage,  pharmacology*
Mitogen-Activated Protein Kinase 1 / antagonists & inhibitors,  metabolism
Mitogen-Activated Protein Kinase 3 / antagonists & inhibitors,  metabolism
Phosphorylation / drug effects
Protein Kinase Inhibitors / administration & dosage,  pharmacology*
Pyridines / administration & dosage,  pharmacology*
Sulindac / administration & dosage,  analogs & derivatives*,  pharmacology
p38 Mitogen-Activated Protein Kinases / antagonists & inhibitors*,  metabolism
Chemical
Reg. No./Substance:
0/2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one; 0/Flavonoids; 0/Imidazoles; 0/Protein Kinase Inhibitors; 0/Pyridines; 0/SB 203580; 38194-50-2/Sulindac; EC 2.7.11.24/Mitogen-Activated Protein Kinase 1; EC 2.7.11.24/Mitogen-Activated Protein Kinase 3; EC 2.7.11.24/p38 Mitogen-Activated Protein Kinases; K619IIG2R9/sulindac sulfone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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