The miRNA-149-5p/MyD88 axis is responsible for ursolic acid-mediated attenuation of the stemness and chemoresistance of non-small cell lung cancer cells.
Environ Toxicol
; 35(5): 561-569, 2020 May.
Article
en En
| MEDLINE
| ID: mdl-31855318
ABSTRACT
Although the inhibitory roles of ursolic acid (UA) have been established in various tumors, its effects on the stemness of non-small cell lung cancer (NSCLC) cells are still unclear. Here, we constructed NSCLC cells with paclitaxel resistance (A549-PR) and showed that A549-PR exhibited a remarkably stronger stemness than the parental A549 cells, which is evident by the increase of spheroid formation capacity, stemness marker expression, and ALDH1 activity. Additionally, UA significantly reduced the stemness and paclitaxel resistance of A549-PR cells. Mechanistic investigations revealed that UA inhibited the miR-149-5p/MyD88 signaling, which is responsible for UA-mediated effects on the stemness of A549-PR cells. Notably, miR-149-5p/MyD88 axis promoted the stemness of A549 cells, while inhibition of this axis attenuated the stemness of A549-PR cells. Therefore, these results suggest that UA could attenuate the stemness and chemoresistance of NSCLC cells through targeting miR-149-5p/MyD88 axis.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Triterpenos
/
Células Madre Neoplásicas
/
Regulación Neoplásica de la Expresión Génica
/
Resistencia a Antineoplásicos
/
MicroARNs
/
Factor 88 de Diferenciación Mieloide
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Environ Toxicol
Asunto de la revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
China