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-Structure paper
| タイトル | Selective CDK2 Degradation via Noncanonical Recruitment. |
|---|---|
| ジャーナル・号・ページ | J Med Chem, Vol. 69, Issue 13, Page 15996-16024, Year 2026 |
| 掲載日 | 2026年7月9日 |
著者 | Yuanyuan Pei / Weiye Lin / Xinzhu Li / Yuhang Meng / Yuling Yin / Benxun Pan / Lixin Zhou / Linhui Cao / Yong Cang / Yi Jiang / Wenchao Lu / Zhanchao Meng / ![]() |
| PubMed 要旨 | Cyclin-dependent kinase 2 (CDK2) represents a critical therapeutic target in tumors resistant to CDK4/6 inhibitors or with amplification. However, selective inhibition of CDK2 remains challenging ...Cyclin-dependent kinase 2 (CDK2) represents a critical therapeutic target in tumors resistant to CDK4/6 inhibitors or with amplification. However, selective inhibition of CDK2 remains challenging owing to the high structural homology among CDKs. In this study, we identify and as cereblon (CRBN)-based molecular glue degraders that selectively degrade CDK2. Ternary complex structures reveal a noncanonical recruitment mode centered on CDK2 Glu57, which bypasses the canonical G-loop/β-hairpin and kinase glycine-rich loop interactions and is stabilized by an extended CRBN-CDK2 interface. Mechanistically, these degraders inhibit retinoblastoma (Rb) phosphorylation and induce G1/S-phase arrest, suppressing CDK2-dependent cell proliferation. further exhibits improved pharmacokinetics, measurable oral bioavailability, and target engagement, achieving intratumoral CDK2 degradation following intraperitoneal administration. Collectively, this study provides a structural blueprint for designing selective kinase degraders and establishes B12 as a chemically tractable probe for targeting CDK2-driven malignancies. |
リンク | J Med Chem / PubMed:42334090 |
| 手法 | EM (単粒子) |
| 解像度 | 2.69 - 2.85 Å |
| 構造データ | EMDB-69221, PDB-23sr: ![]() EMDB-69482: Cryo-EM structure of CDK2 in complex with CRBN/DDB1 and B11 local refinement (Masked on CDK2-CRBN) ![]() EMDB-69484: Cryo-EM structure of CDK2 in complex with CRBN/DDB1 and B11 local refinement (Masked on CDK2-CRBN-DDB1) ![]() EMDB-69485: Cryo-EM structure of CDK2 in complex with CRBN/DDB1 and B11 consensus refinement |
| 化合物 | ![]() PDB-1e59: |
| 由来 |
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キーワード | CELL CYCLE / Cyclin-Dependent Kinase 2 / Cereblon / Molecular glue / Complex |
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