ISDA

Deposition Date 2019-08-22

Release Date 2020-04-01

Last Version Date 2024-03-27

Entry Detail

PDB ID:

6KRO

Keywords:

TRANSFERASE/TRANSFERASE INHIBITOR

Title:

Tankyrase-2 in complex with RK-582

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Cell-free synthesis

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.90 Å

R-Value Free:

0.20

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 41 21 2

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Tankyrase-2
Gene (Uniprot):TNKS2
Chain IDs:A
Chain Length:168
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q9H2K2 Pfam ID:PF00644

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Tankyrase-2
Gene (Uniprot):TNKS2
Chain IDs:B
Chain Length:48
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q9H2K2 Pfam ID:PF00644

Ligand Molecules

DU9

GOL

PO4

Primary Citation

Design and Discovery of an Orally Efficacious Spiroindolinone-Based Tankyrase Inhibitor for the Treatment of Colon Cancer.

Shirai, F, Mizutani, A, Yashiroda, Y, Tsumura, T, Kano, Y, Muramatsu, Y, Chikada, T, Yuki, H, Niwa, H, Sato, S, Washizuka, K, Koda, Y, Mazaki, Y, Jang, M.K, Yoshida, H, Nagamori, A, Okue, M, Watanabe, T, Kitamura, K, Shitara, E, Honma, T, Umehara, T, Shirouzu, M, Fukami, T, Seimiya, H, Yoshida, M, Koyama, H.Show

J.Med.Chem. 63 4183 4204 (2020)

PMID: 32202790 DOI: 10.1021/acs.jmedchem.0c00045

Abstact

Tankyrases (TNKS/TNKS2) belong to the poly(ADP-ribose) polymerase family. Inhibition of their enzymatic activities attenuates the Wnt/β-catenin signaling, which plays an important role in cancer pathogenesis. We previously reported the discovery of RK-287107, a spiroindoline-based, highly selective, potent tankyrase inhibitor. Herein we describe the optimization process of RK-287107 leading to RK-582, which exhibits a markedly improved robust tumor growth inhibition in a COLO-320DM mouse xenograft model when orally administered. In addition to the dose-dependent elevation and attenuation of the levels of biomarkers AXIN2 and β-catenin, respectively, results of the TCF reporter and cell proliferation studies on COLO-320DM are discussed.

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Primary Citation of related structures