Cited by 258Protein Degradation and InhibitorsAcute Myeloid Leukemia ResearchChemical Synthesis and Analysis

Homolog-Selective Degradation as a Strategy to Probe the Function of CDK6 in AML

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Brand, Matthias, Jiang, Baishan, Bauer, Sophie, Donovan, Katherine A., Liang, Yanke, Wang, Eric S., Nowak, Radosław P., Yuan, Jingting C. +6 more·2019·Cell Chemical Biology

Abstract

The design of selective small molecules is often stymied by similar ligand binding pockets. Here, we report BSJ-03-123, a phthalimide-based degrader that exploits protein-interface determinants to achieve proteome-wide selectivity for the degradation of cyclin-dependent kinase 6 (CDK6). Pharmacologic CDK6 degradation targets a selective dependency of acute myeloid leukemia cells, and transcriptomics and phosphoproteomics profiling of acute degradation of CDK6 enabled dynamic mapping of its immediate role in coordinating signaling and transcription.

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Crossref · 10.1016/j.chembiol.2018.11.006

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  • Several mechanisms contribute to increased selectivity of PROTACs, including steric incapability of some targets to form a productive ternary complex, or lack of a suitably positioned lysine residue for ubiquitination.

    “Several mechanisms have been shown to contribute to this increase in selectivity. This includes steric incapability of some targets to form a productive ternary complex, or lack of a suitably positioned lysine residue for ubiquitination.62−69”
  • Beginning a targeted protein degrader discovery project with solid prior knowledge of optimal chemotype-target pairs can rapidly speed up hit-to-lead time.

    “Beginning a targeted protein degrader discovery project with solid prior knowledge of optimal chemotype-target pairs can rapidly speed up hit-to-lead time (Brand et al., 2019; Cromm et al., 2018; Dobrovolsky et al., 2019; Jiang et al., 2019; Li et al., 2019; Olson et al., 2018).”
  • Multiple studies have described numerous CRBN-recruiting dual-selective degraders and CDK6-selective degraders, but none report CDK4-selective degraders; the only reported CDK4-selective degraders are built on ribociclib.

    “Whereas multiple studies have described numerous CRBN-recruiting dual-selective degraders and CDK6-selective degraders 70–73, none report CDK4-selective degraders; the only reported CDK4-selective degraders are built on a slightly different warhead, ribociclib 74.”
  • BSJ-03-123 selectively degrades CDK6 but not CDK4 in AML cell lines because it forms a ternary complex with CDK6 and CRBN but not with CDK4 and CRBN.

    “BSJ-03-123, a CRBN-based CDK6 degrader, was reported to selectively degrade CDK6 but not CDK4 in AML cell lines because it can form a ternary complex with CDK6 and CRBN but not with CDK4 and CRBN [121].”
  • Even when a PROTAC with exquisite selectivity is developed, the determinants driving its specificity profile often remain complex, obscure or puzzling.

    “Even when a PROTAC with exquisite selectivity is developed, the determinants driving its specificity profile often remain complex, obscure or puzzling 29,30 .”

    From Targeted protein degradation: expanding the toolbox (2019) · cites this paper as [30]

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Authors
Brand, M., Jiang, B., Bauer, S., Donovan, K. A., Liang, Y., Wang, E. S., Nowak, R. P., Yuan, J. C., Zhang, T., Kwiatkowski, N., Müller, A. C., Fischer, E. S., Gray, N. S., & Winter, G. E.
Affiliations
  • Austrian Academy of Sciences (AT)
  • Harvard University (US)
  • Dana-Farber Cancer Institute (US)
Corresponding author
  • Gray, Nathanael S.
  • Winter, Georg E.
Venue
Cell Chemical Biology
Publisher
Elsevier BV
Published
2019-02
Volume
26
Issue
2
Pages
300-306.e9
ISSN
  • 2451-9448 (ISSN-L)
  • 2451-9456
OpenAlex
W2908027391
Cited by
258
References
24
Citations by year
2026: 24 · 2025: 28 · 2024: 29 · 2023: 22 · 2022: 38 · 2021: 43 · 2020: 57 · 2019: 17
FWCI
10.75
Type
journal article
Language
en
Open access
Locations
  • Cell chemical biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Austrian Academy of Sciences
  • FWF
  • NIH (CA154303-06)
  • NCI (R01 CA214608-02)
  • Damon Runyon Cancer Research Foundation (DRR-50-18)
  • Novartis Pharmaceuticals
  • Astellas Pharma
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
Keywords
CDK6, acute myeloid leukemia, protein degradation, phosphoproteomics, transcriptomics
MeSH terms
Humans, Phthalimides, Signal Transduction, Leukemia, Myeloid, Acute, Gene Expression, Cell Line, Tumor, Cyclin-Dependent Kinase 4, Cyclin-Dependent Kinase 6, Gene Regulatory Networks, Small Molecule Libraries

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