Non-steroidal anti-inflammatory drugs inhibit calpain activity and membrane localization of calpain 2 protease.
Int J Biochem Cell Biol
; 42(12): 2030-6, 2010 Dec.
Article
en En
| MEDLINE
| ID: mdl-20854926
Non-steroidal anti-inflammatory drugs (NSAIDs) are used frequently worldwide for the alleviation of pain despite their capacity to cause adverse gastrointestinal (GI) side effects. GI toxicity, once thought to be the result of non-specific inhibition of cyclooxegenase (COX) enzymes, is now hypothesized to have multiple other causes that are COX independent. In particular, NSAIDs inhibit intestinal epithelial restitution, the process by which barrier function in intestinal mucosa is restored at sites of epithelial wounds within hours through cell spreading and migration. Accordingly, recent evidence indicates that the expression of calpain proteases, which play a key role in cell migration, is decreased by NSAIDs that inhibit cell migration in intestinal epithelial cells (IEC). Here, we examine the effect of NSAIDs on calpain activity and membrane expression in IEC-6 cells. Indomethacin, NS-398, and SC-560 inhibited calpain activity and decreased expression of calpain 2 in total membrane fractions and in plasma membranes involved in cell attachment to the substrate. Additionally, we demonstrated that inhibition of calpain activity by NSAIDs or ALLM, a calpain inhibitor, limits cell migration and in vitro wound healing of IEC-6 cells. Our results indicate that NSAIDs may inhibit cell migration by decreasing calpain activity and membrane-associated expression of calpain 2. Our results provide valuable insight into the mechanisms behind NSAID-induced GI toxicity and provide a potential pathway through which these negative side effects can be avoided in future members of the NSAID class.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Calpaína
/
Antiinflamatorios no Esteroideos
Límite:
Humans
Idioma:
En
Revista:
Int J Biochem Cell Biol
Asunto de la revista:
BIOQUIMICA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Países Bajos