LINC00662 Promotes Aggressive Traits by Modulating OCT4 Expression through miR-335-5p in Gallbladder Cancer Cells
Journal
International Journal of Molecular Sciences
ISSN
1422-0067
Date Issued
2024
Author(s)
Pablo Pérez-Moreno
Ismael Riquelme
Carolina Bizama
Luis Vergara-Gómez
Julio C. Tapia
Priscilla Brebi
Patricia García
Juan Carlos Roa
Type
journal-article
Abstract
<jats:p>Long non-coding RNAs (lncRNAs) are nucleotide sequences that participate in different biological processes and are associated with different pathologies, including cancer. Long intergenic non-protein-coding RNA 662 (LINC00662) has been reported to be involved in different cancers, including colorectal, prostate, and breast cancer. However, its role in gallbladder cancer has not yet been described. In this article, we hypothesize that LINC00662 has an important role in the acquisition of aggressiveness traits such as a stem-like phenotype, invasion, and chemoresistance in gallbladder cancer. Here, we show that LINC00662 is associated with larger tumor size and lymph node metastasis in patients with gallbladder cancer. Furthermore, we show that the overexpression of LINC00662 promotes an increase in CD133+/CD44+ cell populations and the expression of stemness-associated genes. LINC00662 promotes greater invasive capacity and the expression of genes associated with epithelial–mesenchymal transition. In addition, the expression of LINC00662 promotes resistance to cisplatin and 5-fluorouracil, associated with increased expression of chemoresistance-related ATP-binding cassette (ABC) transporters in gallbladder cancer (GBC) cell lines. Finally, we show that the mechanism by which LINC00662 exerts its function is through a decrease in microRNA 335-5p (miR-335-5p) and an increase in octamer-binding transcription factor 4 (OCT4) in GBC cells. Thus, our data allow us to propose LINC00662 as a biomarker of poor prognosis and a potential therapeutic target for patients with GBC.</jats:p>
Cite this document
Pérez-Moreno, P., Riquelme, I., Bizama, C., Vergara-Gómez, L., Tapia, J. C., Brebi, P., García, P., & Roa, J. C. (2024). Linc00662 promotes aggressive traits by modulating oct4 expression through mir-335-5p in gallbladder cancer cells. International Journal of Molecular Sciences, 25(12), 6740. https://doi.org/10.3390/ijms25126740
Subjects
linc00662
;
gallbladder cancer
;
mir-335-5p
;
oct4