The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.
Pharmacological perturbation of CDK9 using selective CDK9 inhibition or degradation
Open accessAbstract
Cyclin-dependent kinase 9 (CDK9), an important regulator of transcriptional elongation, is a promising target for cancer therapy, particularly for cancers driven by transcriptional dysregulation. We characterized NVP-2, a selective ATP-competitive CDK9 inhibitor, and THAL-SNS-032, a selective CDK9 degrader consisting of a CDK-binding SNS-032 ligand linked to a thalidomide derivative that binds the E3 ubiquitin ligase Cereblon (CRBN). To our surprise, THAL-SNS-032 induced rapid degradation of CDK9 without affecting the levels of other SNS-032 targets. Moreover, the transcriptional changes elicited by THAL-SNS-032 were more like those caused by NVP-2 than those induced by SNS-032. Notably, compound washout did not significantly reduce levels of THAL-SNS-032-induced apoptosis, suggesting that CDK9 degradation had prolonged cytotoxic effects compared with CDK9 inhibition. Thus, our findings suggest that thalidomide conjugation represents a promising strategy for converting multi-targeted inhibitors into selective degraders and reveal that kinase degradation can induce distinct pharmacological effects compared with inhibition.
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“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”
From Advancing Targeted Protein Degradation via Multiomics Profiling and Artificial Intelligence (2023) · cites this paper as [64]
In the citing paper
“Similarly, because of a non-linear dependence on binding, degradation target profiles often differ vastly from parental inhibitor selectivity profiles (Olson et al., 2018)”
From Mapping the Degradable Kinome Provides a Resource for Expedited Degrader Development (2020) · cites this paper as Olson et al., 2018
In the citing paper
“It is widely believed that degraders uncouple efficacy from target occupancy (Gadd et al., 2017; Nowak et al., 2018; Olson et al., 2018; Roy et al., 2019).”
From Mapping the Degradable Kinome Provides a Resource for Expedited Degrader Development (2020) · cites this paper as Olson et al., 2018
In the citing paper
“Simultaneously, it led to a marked sensitization (15-fold shift in EC50) to the CDK9-targeting PROTAC THAL-SNS-03240 (Extended Data Fig. 6B and C).”
From Functional E3 ligase hotspots and resistance mechanisms to small-molecule degraders (2023) · cites this paper as [40]
In the citing paper
“For example, selective degradation of CDK9 was achieved by converting the non-selective CDK inhibitor SNS-032 into a degrader[9].”
From Development of dual and selective degraders of cyclin-dependent kinases 4 and 6 (2019) · cites this paper as [9]
In the citing paper
“It has further been shown that PROTAC selectivity does not necessarily mimic that of its target-binding warhead, but rather depends sensitively on the linker 20, 23, 24, 33”
From Rationalizing PROTAC-Mediated Ternary Complex Formation Using Rosetta (2021) · cites this paper as [24]
In the citing paper
“and can have a duration of action that extends beyond clearance and depends on the turnover rate of the protein target rather than residence time 23,24,25 .”
From Targeted protein degradation: expanding the toolbox (2019) · cites this paper as [23]
In the citing paper
“Regarding clinical applications, appropriate dosage may be an issue, as saturating doses of free PROTAC molecules can antagonize the binding of binary PROTAC-protein complexes to their ternary partner and abrogate catalytic degradation, a well-documented phenomenon known as the hook effect in cell assays 23,33,34 .”
From Targeted protein degradation: expanding the toolbox (2019) · cites this paper as [23]
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Core Transcriptional Regulatory Circuitry in Human Embryonic Stem Cells
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Self-citationPhthalimide conjugation as a strategy for in vivo target protein degradation
Winter, G. E., Buckley, D. L., Paulk, J., Roberts, J. M., Souza, A., Dhe-Paganon, S., & Bradner, J. E. (2015) · Science · doi:10.1126/science.aab1433 · Cited by 1,760
Self-citationMalumbres, M. (2014) · Genome biology · doi:10.1186/gb4184 · Cited by 1,730
Transcriptional Amplification in Tumor Cells with Elevated c-Myc
Lin, C. Y., Lovén, J., Rahl, P. B., Paranal, R. M., Burge, C. B., Bradner, J. E., Lee, T. I., & Young, R. A. (2012) · Cell · doi:10.1016/j.cell.2012.08.026 · Cited by 1,543
Self-citationc-Myc Regulates Transcriptional Pause Release
Rahl, P. B., Lin, C. Y., Seila, A. C., Flynn, R. A., McCuine, S., Burge, C. B., Sharp, P. A., & Young, R. A. (2010) · Cell · doi:10.1016/j.cell.2010.03.030 · Cited by 1,279
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Kinase inhibitors: the road ahead
Ferguson, F. M., & Gray, N. S. (2018) · Nature Reviews Drug Discovery · doi:10.1038/nrd.2018.21 · Cited by 1,009
Self-citationTargeted protein degradation: expanding the toolbox
Schapira, M., Calabrese, M. F., Bullock, A. N., & Crews, C. M. (2019) · Nature Reviews Drug Discovery · doi:10.1038/s41573-019-0047-y · Cited by 960
PROteolysis TArgeting Chimeras (PROTACs) — Past, present and future
Pettersson, M., & Crews, C. M. (2019) · Drug Discovery Today Technologies · doi:10.1016/j.ddtec.2019.01.002 · Cited by 830
A Potent and Selective Small-Molecule Degrader of STAT3 Achieves Complete Tumor Regression In Vivo
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“The classical “hook effect” for PROTAC degraders (Bondeson et al., 2015; Burslem et al., 2018a; Chan et al., 2018; Farnaby et al., 2019; Lu et al., 2015; Olson et al., 2018; Schiedel et al., 2018; Winter et al., 2017) was not observed for SD-36 at concentrations as high as 10 μM in all the cell lines tested (Figure 2A…”
BackgroundPROTACs: great opportunities for academia and industry
Sun, X., Gao, H., Yang, Y., He, M., Wu, Y., Song, Y.-G., Tong, Y., & Rao, Y. (2019) · Signal Transduction and Targeted Therapy · doi:10.1038/s41392-019-0101-6 · Cited by 663
Metadata
- Authors
- Olson, C. M., Jiang, B., Erb, M. A., Liang, Y., Doctor, Z. M., Zhang, Z., Zhang, T., Kwiatkowski, N., Boukhali, M., Green, J. L., Haas, W., Nomanbhoy, T., Fischer, E. S., Young, R. A., Bradner, J. E., Winter, G. E., & Gray, N. S.
- Affiliations
- Harvard University (US)
- California Sea Grant (US)
- Whitehead Institute for Biomedical Research (US)
- Corresponding author
- Gray, Nathanael S
- ORCID
- Venue
- Nature Chemical Biology
- Published
- 2017-12-18
- Volume
- 14
- Issue
- 2
- Pages
- 163-170
- ISSN
- 1552-4450 (ISSN-L)
- 1552-4469
- PMC
- PMC5912898
- OpenAlex
- W2781383440
- Cited by
- 552
- References
- 49
- Citations by year
- 2026: 41 · 2025: 78 · 2024: 71 · 2023: 63 · 2022: 69 · 2021: 77 · 2020: 77 · 2019: 51 · 2018: 24 · 2017: 1
- FWCI
- 17.42
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Chemical Biology (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion)
- PMC
- Funders
- National Cancer Institute (R01CA179483, R01CA218278)
- National Institute of General Medical Sciences (T32GM007753)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
- Keywords
- CDK9, transcription elongation, CDK9 inhibitor, SNS-032, cereblon, E3 ubiquitin ligase, apoptosis, transcriptional dysregulation, cancer therapy
- MeSH terms
- Humans, Ligands, Oxazoles, Peptide Hydrolases, Phosphorylation, Protein Binding, Protein Conformation, Thalidomide, Thiazoles, Apoptosis, Crystallography, X-Ray, Inhibitory Concentration 50, Proteomics, Cyclin-Dependent Kinase 9, Ubiquitin-Protein Ligases, Cell Line, Tumor, Protein Kinase Inhibitors, Adaptor Proteins, Signal Transducing, Cell Proliferation
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