ArticleNature genetics2026
Mutational scanning reveals substrate-assisted autoregulation of the WNT destruction complex.
Article in Nature genetics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Reconstructing the evolutionary origin of β-catenin recognition in the Wnt destruction complex.Molecular biology and evolution · 2026Article
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10 authors.
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Abstract
The β-catenin destruction complex (BDC) regulates WNT-β-catenin signaling and is a prime therapeutic target in colorectal cancer, yet its biochemical complexity has hindered mechanistic understanding. We mapped the sequence-function landscape of the BDC using tiled base editor screens across its components CTNNB1, AXIN1, APC and GSK3B. Amongst ~150 previously unreported mutations that affected WNT signaling, we discovered gain-of-function and separation-of-function alleles that reveal mechanisms of complex assembly, including a β-catenin region regulating TCF/LEF transcription factor binding. Critically, we found that the AXIN1-β-catenin interface controls signaling flux through the oncogenic BDC found in APC-mutant cancers. In cells expressing truncated APC, β-catenin itself scaffolds BDC assembly, establishing a substrate-assisted autoregulatory mechanism. This architecture represents an unexploited therapeutic vulnerability: strengthening the AXIN1-β-catenin interaction restores destruction complex function and impairs the growth of colorectal cancer cells. Our mutational resource provides a foundation for mechanistic understanding and therapeutic targeting of the WNT pathway.
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