Cited by 852Protein Degradation and InhibitorsProstate Cancer Treatment and ResearchChromatin Remodeling and Cancer

PROTAC-induced BET protein degradation as a therapy for castration-resistant prostate cancer

Open access
Raina, Kanak, Lu, Jing, Qian, Yimin, Altieri, Martha, Gordon, Deborah, Rossi, Ann Marie K., Wang, Jing, Chen, Xin +6 more·2016·Proceedings of the National Academy of Sciences

Abstract

Significance: We describe the development of a small molecule that mediates the degradation of bromodomain and extra-terminal (BET) proteins and its application in the treatment of castration-resistant prostate cancer (CRPC). Few therapeutic options exist to treat CRPC, especially CRPC tumors expressing constitutively active androgen receptor (AR) splice variants that lack the ligand-binding domain and can effect androgen-independent transactivation of target genes. Importantly, we demonstrate that targeted degradation of BET proteins using proteolysis-targeting chimera (PROTAC) technology causes cell death in cultured prostate cancer cells and results in tumor growth inhibition or regression in mouse models of CRPC, including models that express high levels of AR splice variant 7. Our work thus contains a significant potential therapeutic advance in the treatment of this cancer.

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  • ARV-771 (219) efficiently degrades BRD4 protein in prostate cancer cells, with potency of BRD2/3/4 degradation in various prostate cell lines below 5 nM, and downregulates c-Myc levels.

    “Crews’s team also developed ARV-771 (219), another PROTAC molecule featuring VHL as the E3 ligase ligand, which efficiently degrades BRD4 protein in prostate cancer cells, exhibiting a potency of BRD2/3/4 degradation in various prostate cell lines below 5 nM (Table 4). The researchers also observed that ARV-771 effectively downregulated c-Myc levels.519”
  • dBET6 and ARV-771 have matched cellular potency, including in KBM7 cells.

    “we focused on two BET Bromodomain targeting PROTACs: dBET6 (CRBN-based) and ARV-771 (VHL-based) that have matched cellular potency, including in the near-haploid human leukemia cell line KBM7 (Extended Data Fig. 1A)26,27.”

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Authors
Raina, K., Lu, J., Qian, Y., Altieri, M., Gordon, D., Rossi, A. M. K., Wang, J., Chen, X., Dong, H., Siu, K., Winkler, J. D., Crew, A. P., Crews, C. M., & Coleman, K. G.
Affiliations
  • Arvinas (United States) (US)
  • Arvinas, LLC, New Haven, CT 06511;
  • Yale University (US)
Corresponding author
Coleman, Kevin G.
Venue
Proceedings of the National Academy of Sciences
Published
2016-06-06
Volume
113
Issue
26
Pages
7124-7129
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2409568753
Cited by
852
References
45
Citations by year
2026: 64 · 2025: 80 · 2024: 105 · 2023: 90 · 2022: 105 · 2021: 100 · 2020: 98 · 2019: 94 · 2018: 54 · 2017: 51 · 2016: 7
FWCI
36.05
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (R35CA197589)
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 › Chromatin Remodeling and Cancer
Keywords
castration-resistant prostate cancer, PROTACs, androgen receptor signaling, BET proteins, androgen receptor degradation, tumor regression, xenograft models
MeSH terms
Bromodomain Containing Proteins, Animals, Antineoplastic Agents, Humans, Male, Nuclear Proteins, Receptors, Androgen, Transcription Factors, Signal Transduction, RNA-Binding Proteins, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Cell Line, Tumor, Mice, Proteolysis, Prostatic Neoplasms, Castration-Resistant

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