Cited by 635Protein Degradation and InhibitorsProstate Cancer Treatment and ResearchUbiquitin and proteasome pathways

Targeted intracellular protein degradation induced by a small molecule: En route to chemical proteomics

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Schneekloth, Ashley R., Pucheault, Mathieu, Tae, Hyun Seop, Crews, Craig M.·2008·Bioorganic & Medicinal Chemistry Letters

Abstract

We have developed a heterobifunctional all-small molecule PROTAC (PROteolysis TArgeting Chimera) capable of inducing proteasomal degradation of the androgen receptor. This cell permeable PROTAC consists of a non-steroidal androgen receptor ligand (SARM) and the MDM2 ligand known as nutlin, connected by a PEG-based linker. The SARM-nutlin PROTAC recruits the androgen receptor to MDM2, which functions as an E3 ubiquitin ligase. This leads to the ubiquitination of the androgen receptor, and its subsequent degradation by the proteasome. Upon treatment of HeLa cells with 10microM PROTAC for 7h, we were able to observe a decrease in androgen receptor levels. This degradation is proteasome dependent, as it is mitigated in cells pre-treated with 10microM epoxomicin, a specific proteasome inhibitor. These results have implications for the potential study and treatment of various cancers with increased androgen receptor levels.

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Crossref · 10.1016/j.bmcl.2008.07.114

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  • Combining the nutlin headgroup with a selective androgen receptor modulator (SARM) moiety led to androgen receptor degradation in a transient overexpression system.

    “In an initial PROTAC approach, the nutlin headgroup was combined with a selective androgen receptor modulator (SARM) moiety, and androgen receptor degradation was observed in a transient overexpression system [67].”

    From Advances in targeted degradation of endogenous proteins (2019) · cites this paper as [67]

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Authors
Schneekloth, A. R., Pucheault, M., Tae, H. S., & Crews, C. M.
Affiliations
Yale University (US)
Corresponding author
Crews, Craig M.
Venue
Bioorganic & Medicinal Chemistry Letters
Publisher
Elsevier BV
Published
2008-11
Volume
18
Issue
22
Pages
5904-5908
ISSN
0960-894X (ISSN-L)
OpenAlex
W2083469632
Cited by
635
References
15
Citations by year
2026: 64 · 2025: 77 · 2024: 76 · 2023: 64 · 2022: 78 · 2021: 68 · 2020: 68 · 2019: 44 · 2018: 27 · 2017: 25 · 2016: 12 · 2015: 5 · 2014: 6 · 2013: 1 · 2012: 4
FWCI
2.06
Type
journal article
Language
en
Open access
Locations
  • Bioorganic & Medicinal Chemistry Letters (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (CA118631, R33CA118631, R21CA118631)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
PROTACs, androgen receptor, MDM2, nutlin, selective androgen receptor modulators, proteasomal degradation, ubiquitination, E3 ubiquitin ligase, chemoproteomics, epoxomicin, prostate cancer
MeSH terms
Cell Membrane Permeability, Cell Survival, Humans, Imidazoles, Indicators and Reagents, Piperazines, Proteins, Receptors, Androgen, Blotting, Western, Ubiquitin, Proteomics, Ubiquitin-Protein Ligases, Cell Line, Tumor, Cell Proliferation

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