Back

Phosphorylation-driven Targeted Protein Degradation of Oncogenic β-catenin

Wolf, L. M.; Poirson, J.; Macleod, G.; Lin, S.; Kim, Y. H.; Almeida, M. P.; Taipale, M.; Angers, S.

2026-03-18 molecular biology
10.64898/2026.03.16.712096 bioRxiv
Show abstract

Therapeutic strategies to inhibit the Wnt signalling pathway for cancer treatment have, so far, failed to advance to the clinic. Induced-proximity drugs are revolutionizing our ability to tackle targets previously considered undruggable. Here, we used an unbiased genome-scale approach to identify induced-proximity protein candidates that inhibit the central Wnt signalling effector {beta}-catenin in colorectal cancer cells. While the identification of several E3 ubiquitin ligases validated our approach, we uncovered that inducing proximity to members of the Casein kinase I (CSNK1) family leads to {beta}-catenin degradation and inhibits the growth of colorectal cancer cells harbouring Wnt pathway mutations. We show that {beta}-catenin degradation induced by CSNK1 proximity is kinase activity- and proteasome-dependent. We propose that the formation of a neo-degron, through kinase recruitment, can expand induced-proximity drug targeting strategies.

Matching journals

The top 4 journals account for 50% of the predicted probability mass.

50% of probability mass above

"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.