ISDA

Entry Detail

PDB ID:

7ZRB

Keywords:

CELL ADHESION

Title:

Crystal structure of Beta-catenin Armadillo repeats domain in complex with the inhibitor RS6452

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2022-05-04

Release Date:

2023-05-17

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.43 Å

R-Value Free:

0.28

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Catenin beta-1
Chain IDs:A, B
Chain Length:539
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P35222 Pfam ID:PF00514

Ligand Molecules

JKI

Primary Citation

Novel N -(Heterocyclylphenyl)benzensulfonamide Sharing an Unreported Binding Site with T-Cell Factor 4 at the beta-Catenin Armadillo Repeats Domain as an Anticancer Agent.

Nalli, M, Di Magno, L, Wen, Y, Liu, X, D'Ambrosio, M, Puxeddu, M, Parisi, A, Sebastiani, J, Sorato, A, Coluccia, A, Ripa, S, Di Pastena, F, Capelli, D, Montanari, R, Masci, D, Urbani, A, Naro, C, Sette, C, Orlando, V, D'Angelo, S, Biagioni, S, Bigogno, C, Dondio, G, Pastore, A, Stornaiuolo, M, Canettieri, G, Liu, T, Silvestri, R, La Regina, G.Show

Acs Pharmacol Transl Sci 6 1087 1103 (2023)

PMID: 37470018 DOI: 10.1021/acsptsci.3c00092

Abstact

Despite intensive efforts, no inhibitors of the Wnt/β-catenin signaling pathway have been approved so far for the clinical treatment of cancer. We synthesized novel N-(heterocyclylphenyl)benzenesulfonamides as β-catenin inhibitors. Compounds 5-10 showed strong inhibition of the luciferase activity. Compounds 5 and 6 inhibited the MDA-MB-231, HCC1806, and HCC1937 TNBC cells. Compound 9 induced in vitro cell death in SW480 and HCT116 cells and in vivo tumorigenicity of a human colorectal cancer line HCT116. In a co-immunoprecipitation study in HCT116 cells transfected with Myc-tagged T-cell factor 4 (Tcf-4), compound 9 abrogated the association between β-catenin and Tcf-4. The crystallographic analysis of the β-catenin Armadillo repeats domain revealed that compound 9 and Tcf-4 share a common binding site within the hotspot binding region close to Lys508. To our knowledge, compound 9 is the first small molecule ligand of this region to be reported. These results highlight the potential of this novel class of β-catenin inhibitors as anticancer agents.

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Primary Citation of related structures