Citation
Honrubia Gómez, Paloma and López Garrido, María Pilar and Gil Gas, Carmen and Sánchez Sánchez, José and Álvarez Simón, Carmen and Cuenca Escalona, Jorge and Ferrer Pérez, Ana and Arias, Enrique and Moreno, Raúl and Sánchez Sánchez, Francisco and Ramírez Castillejo, María del Carmen
(2019).
Pedf derived peptides affect colorectal cancer cell lines resistance and tumour re-growth capacity.
"Oncotarget", v. 10
(n. 31);
pp. 2973-2986.
ISSN 1949-2553.
https://doi.org/10.18632/oncotarget.26085.
Abstract
Relapse after chemotherapy treatment depends on the cancer initiating cells (CICs). PEDF (Pigmented Epithelium Derived Factor) is an anti-angiogenic, neurotrophic and self-renewal regulator molecule, also involved in CICs biology. Acute and chronic exposition of colon cancer cell lines to CT/CTE PEDF-derived peptides decreased drug-resistance to conventional colorectal cancer treatments, such as oxaliplatin or irinotecan. We confirmed a reduction in the irinotecan and oxaliplatin IC50 doses for all tested tumour cell lines. After xenograft transplantation, CT/CTE treatments also produced a reduction in resistance to conventional chemotherapy treatments as in culture-assays. Metastatic capacity of these treated cell lines was so depleted. The PEDF signaling pathway could be a future therapeutic tool for use as an adjuvant therapy that decreases IC50 dosis, adverse effects and treatment costs. This pathway could also be involved in an increase of the time relapse in patients, decreased tumourigenicity, and decreased capacity to produce metastasis.
