p62 participates in the inhibition of NF-κB signaling and apoptosis induced by sulfasalazine in human glioma U251 cells

Nuclear factor-κB (NF-κB) is constitutively activated in most malignant gliomas and is involved in cancer progression and drug resistance to chemotherapy. Sulfasalazine (SAS) is a classic inhibitor of NF-κB. Apoptosis and autophagy were induced by SAS accompanied by inhibition of NF-κB signaling in U251 cells. Inhibition of autophagy by 3-MA suppressed the effects of SAS on NF-κB signaling and apoptosis in U251 cells. Multifunctional scaffold protein p62 is well known as an autophagy marker protein and provides crosstalk for important signaling pathways, including NF-κB signaling. SAS-induced decrease in the p62 protein levels may be the result of degradation through autophagy. SAS induced the inhibition of NF-κB signaling and apoptosis at least partly via a p62-dependent effect in U251 cells. Collectively, our data shed light on the link between p62 and the NF-κB signaling pathway, particularly in glioma cells. The results may facilitate the design of more effective targeted therapies for the treatment of tumors in which NF-κB signaling is altered..

Medienart:

Artikel

Erscheinungsjahr:

2015

Erschienen:

2015

Enthalten in:

Zur Gesamtaufnahme - volume:34

Enthalten in:

Oncology reports - 34(2015), 1, Seite 235-243

Sprache:

Englisch

Beteiligte Personen:

SU, JING [VerfasserIn]
LIU, FEI [Sonstige Person]
XIA, MEIHUI [Sonstige Person]
XU, YE [Sonstige Person]
LI, XIAONING [Sonstige Person]
KANG, JINSONG [Sonstige Person]
LI, YULIN [Sonstige Person]
SUN, LIANKUN [Sonstige Person]

Links:

Volltext

Themen:

Apoptosis
Autophagy
Nuclear factor-κB
P62/sequestosome 1
Sulfasalazine

doi:

10.3892/or.2015.3944

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC195994102X