STIM1 and STIM2 differently regulate endogenous Ca2+ entry and promote TGF-ß-induced EMT in breast cancer cells.
Biochem Biophys Res Commun
; 488(1): 74-80, 2017 06 17.
Article
en En
| MEDLINE
| ID: mdl-28479254
ABSTRACT
The Ca2+ sensor proteins STIM1 and STIM2 are crucial elements of store-operated calcium entry (SOCE) in breast cancer cells. Increased SOCE activity may contribute to epithelial-mesenchymal transitions (EMT) and increase cell migration and invasion. However, the roles of STIM1 and STIM2 in TGF-ß-induced EMT are still unclear. In this study, we demonstrate roles of STIMs in TGF-ß-induced EMT in breast cancer cells. In particular, STIM1 and STIM2 expression affected TGF-ß-induced EMT by mediating SOCE in MDA-MB-231 and MCF-7 breast cancer cells. The specific SOCE inhibitor YM58483 blocked TGF-ß-induced EMT, and differing effects of STIM1 and STIM2 on TGF-ß-induced EMT correlated with differing roles in SOCE. Finally, we showed that STIM2 is associated with non-store-operated calcium entry (non-SOCE) during TGF-ß-induced EMT, whereas STIM1 is not. What's more, non-SOCE have a large possibility to be ROCE. In conclusion, STIM1 and STIM2 proteins play important roles in TGF-ß-induced EMT and these effects are related to both SOCE and non-SOCE.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Mama
/
Calcio
/
Factor de Crecimiento Transformador beta
/
Transición Epitelial-Mesenquimal
/
Molécula de Interacción Estromal 1
/
Molécula de Interacción Estromal 2
/
Proteínas de Neoplasias
Límite:
Humans
Idioma:
En
Revista:
Biochem Biophys Res Commun
Año:
2017
Tipo del documento:
Article
País de afiliación:
China