The mechanism of lncRNA SSTR5-AS1 promoting ferroptosis resistance and immune escape in ovarian cancer cells by recruiting STAT3 to regulate SLC7A11 expression
Ovarian cancer (OC) is the foremost cause of gynecological cancer-related mortality. Respecting the role of long noncoding RNAs (lncRNAs) in malignancies, we explored the mechanism of SSTR5-AS1 regulating OC cell ferroptosis resistance and immune escape via the signal transducer and activator of transcription 3 (STAT3)/solute carrier family 7a member 11 (SLC7A11) axis. OC cells were treated with si-SSTR5-AS1, oe-SSTR5-AS1 and oe-SLC7A11 plasmids. SSTR5-AS1, STAT3 and SLC7A11 mRNA levels, and cell malignant behaviors were assessed by RT-qPCR, CCK-8 and Transwell assays. Fe SSTR5-AS1 was up-regulated in OC cells. SSTR5-AS1 overexpression facilitated OC cell malignant behaviors, down-regulated Fe SSTR5-AS1 promoted SLC7A11 transcription and expression by recruiting STAT3, thereby promoting ferroptosis resistance and immune escape of OC cells.