Download MendeleyTargeting Casein Kinase 2 and Histone Deacetylase with a Dual Inhibitor Effectively Reduces Tumor Growth in a Triple-Negative Breast Cancer Xenograft Model.
Ortin, I., Ochoa-Callejero, L., Werner, C., Lindenblatt, D., Niefind, K., Martinez, A., de Pascual-Teresa, B., Ramos, A.(2025) Acs Pharmacol Transl Sci 8: 2093-2105
- PubMed: 40672667
- DOI: https://doi.org/10.1021/acsptsci.5c00192
- Primary Citation of Related Structures:
9GCW, 9GXY - PubMed Abstract:
In a previous study, IOR-160 was identified as a potent dual inhibitor of CK2 and HDAC enzymes. In this study, we evaluated its selectivity and therapeutic potential. IOR-160 exhibited high selectivity for CK2 within a panel of 21 kinases and more widespread inhibitory activity against histone deacetylases (HDAC 1, 2, 3, and 6, low activity for HDAC8). Using a mouse model of triple-negative breast cancer (MDA-MB-231), we further explored its effects on disease progression. Notably, animals treated with IOR-160 exhibited no detectable signs of toxicity or behavioral side effects relative to untreated mice. In a xenograft study, IOR-160 significantly reduced tumor growth ( p = 0.0336) and decreased tumor burden ( p = 0.0454) compared to the vehicle (DMSO)-treated group. In addition, IOR-160 modulated critical cellular signaling pathways, demonstrated by the inhibition of AKT phosphorylation ( p = 0.0175) and a significant increase in acetylated α-tubulin ( p = 0.0023), confirming the dual action of IOR-160 in vivo . Furthermore, X-ray crystallography revealed the binding mode of IOR-160 to CK2, showing high conservation compared to that of the known CK2 inhibitor CX-4945. These results suggest that IOR-160 has significant potential as an antitumor agent. Nonclinical and clinical studies become now necessary to validate the efficacy of this new chemical entity as a potential drug.
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Boadilla del Monte 28668, Spain.
Organizational Affiliation:
