Molecular mechanism of apoptosis of breast cancer SKBR-3 cells induced by cryptanshinone via G protein coupled estrogen receptor( GPER) mediated pathway / 中国中药杂志
China Journal of Chinese Materia Medica
; (24): 4905-4911, 2019.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-1008180
Biblioteca responsável:
WPRO
ABSTRACT
The study aimed to illuminate the role of G protein coupled estrogen receptor( GPER) and its mediated PI3 K/AKT signaling pathway in cryptotanshinone( CPT) induced apoptosis of breast cancer SKBR-3 cells,which is GPER positive and ER negative.The apoptosis rate of SKBR-3 cells was tested by Annexin V-FITC/PI staining and apoptosis effector caspase-3 was determined by Western blot. The key proteins in PI3 K/AKT signaling pathway mediated by GPER were detected by Western blot and immunofluorescence technique. Meanwhile,the agonist G1 and antagonist G15 of GPER and antagonist LY294002 of PI3 K were employed in the test to further clarify the effect of GPER and PI3 K/AKT pathway. The results indicated that the apoptosis rate was increased from 4. 7% to46. 1% and 69. 0% after treatment with 0,5,10 μmol·L~(-1) CPT for 48 h( P<0. 01). The expression of PI3 K,AKT and p-AKT were inhibited( P<0. 05 or P<0. 01),while caspase-3 level increased obviously after treatment with CPT( P<0. 01). Importantly,inhibitory effect of PI3 K/AKT signaling pathway by CPT was further enhanced by G1 and attenuated by G15. LY294002 also induced a further inhibition of expression of AKT and p-AKT. The mean fluorescence intensity of AKT and p-AKT could be decreased by CPT. Furthermore,CPT could downregulate GPER expression in SKBR-3 cells( P<0. 01),which could be inhibited by G1 and enhanced by G15.In conclusion,CPT could induce the apoptosis of ER negative and GPER positive breast cancer SKBR-3 cells and the molecular mechanism is related to its regulatory effect of GPER and its mediated PI3 K/AKT signaling pathway.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Neoplasias da Mama
/
Medicamentos de Ervas Chinesas
/
Transdução de Sinais
/
Receptores de Estrogênio
/
Apoptose
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Receptores Acoplados a Proteínas G
/
Proteínas Proto-Oncogênicas c-akt
Limite:
Humanos
Idioma:
Chinês
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2019
Tipo de documento:
Artigo