Mechanism of RIP2 enhancing stemness of glioma cells induces temozolomide resistance.
CNS Neurosci Ther
; 28(12): 2319-2330, 2022 12.
Article
en En
| MEDLINE
| ID: mdl-36184801
ABSTRACT
AIMS:
We aimed to investigate the role of receptor-interacting protein 2 (RIP2) in regulation of stemness of glioma cells and chemotherapy resistance.METHODS:
Plasmid transfection was used to overexpress RIP2. Chemical inhibitors were used to inhibit RIP2 or NF-κB activity. Cancer stemness of glioma cells was investigated by sphere formation assays, clone formation assays, and xenograft tumor formation assays. The expression of RIP2, p-NF-κB, IκBα, CD133, or SOX-2 was detected by Western blotting and immunofluorescence. Apoptosis was detected by flow cytometry. Immunohistochemical staining was used to detect the expression of RIP2, CD133, and SOX-2 in xenograft tumor tissue. The effect of the RIP2/NF-κB pathway on temozolomide (TMZ) resistance was evaluated by xenograft tumor assay.RESULTS:
Transfection with RIP2 plasmid enhanced the sphere formation capability of U251 cells, clone formation capability, and xenograft tumor formation capability. RIP2 could mediate TMZ resistance by upregulating the expression of CD133 and SOX-2 by activating the NF-κB pathway. Both RIP2 inhibitor GSK583 and the NF-κB inhibitor SC75741 could reverse the resistance of U251 cells to TMZ.CONCLUSION:
RIP2 mediates TMZ resistance by regulating the maintenance of stemness in glioma cells through NF-κB. Interventions targeting the RIP2/NF-κB pathway may be a new strategy for TMZ-resistant gliomas.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Células Madre Neoplásicas
/
Neoplasias Encefálicas
/
Proteína Serina-Treonina Quinasa 2 de Interacción con Receptor
/
Glioma
Límite:
Animals
/
Humans
Idioma:
En
Revista:
CNS Neurosci Ther
Asunto de la revista:
NEUROLOGIA
/
TERAPEUTICA
Año:
2022
Tipo del documento:
Article
País de afiliación:
China