Cited by 207Protein Degradation and InhibitorsLymphoma Diagnosis and TreatmentComputational Drug Discovery Methods

Chemically Induced Degradation of the Oncogenic Transcription Factor BCL6

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Kerres, Nina, Steurer, Steffen, Schlager, Stefanie, Bader, Gerd, Berger, Helmut, Caligiuri, Maureen, Dank, Christian, Engen, John R. +41 more·2017·Cell Reports

Abstract

The transcription factor BCL6 is a known driver of oncogenesis in lymphoid malignancies, including diffuse large B cell lymphoma (DLBCL). Disruption of its interaction with transcriptional repressors interferes with the oncogenic effects of BCL6. We used a structure-based drug design to develop highly potent compounds that block this interaction. A subset of these inhibitors also causes rapid ubiquitylation and degradation of BCL6 in cells. These compounds display significantly stronger induction of expression of BCL6-repressed genes and anti-proliferative effects than compounds that merely inhibit co-repressor interactions. This work establishes the BTB domain as a highly druggable structure, paving the way for the use of other members of this protein family as drug targets. The magnitude of effects elicited by this class of BCL6-degrading compounds exceeds that of our equipotent non-degrading inhibitors, suggesting opportunities for the development of BCL6-based lymphoma therapeutics.

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Crossref · 10.1016/j.celrep.2017.08.081

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  • BI-3802 reduces BCL6 protein levels, resulting in de-repression of BCL6 target genes.

    “Bi-3802 demonstrated potential by reducing Bcl6 protein levels, resulting in the de-repression of Bcl6 target genes (Kerres et al. 2017).”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Kerres et al. 2017

  • BI-3802 was discovered through a high-throughput screen designed to identify compounds that inhibit BCL6's interaction with corepressors.

    “Another serendipitous degrader, Bi-3802, was discovered through a high-throughput screen designed to identify compounds that could inhibit Bcl6's interaction with corepressors (Kerres et al. 2017).”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Kerres et al. 2017

  • Screens for novel BCL6 inhibitors led to the identification of small molecules that unexpectedly induce BCL6 degradation, including BI-3802.

    “Screens for novel BCL6 inhibitors led to the identification of small molecules that unexpectedly induce BCL6 degradation, including BI-38026.”
  • BI-3802 induces rapid ubiquitination and degradation of BCL6.

    “BI-3802 induces rapid ubiquitination and degradation of BCL6, resulting in profound de-repression of BCL6 target genes and anti-proliferative effects in DLBCL cell lines, comparable to a genetic knock-out21, and superior to non-degrading BCL6 inhibitors such as BI-3812 or heterobifunctional BCL6 degraders5,6.”
  • BI-3802 binds the BTB domain of BCL6.

    “BI-3802 is a small molecule that binds the BTB domain of the oncogenic transcription factor BCL6 and results in proteasomal degradation6.”

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Authors
Kerres, N., Steurer, S., Schlager, S., Bader, G., Berger, H., Caligiuri, M., Dank, C., Engen, J. R., Ettmayer, P., Fischerauer, B., Flotzinger, G., Gerlach, D., Gerstberger, T., Gmaschitz, T., Greb, P., Han, B., Heyes, E., Iacob, R. E., Kessler, D., Kölle, H., Lamarre, L., Lancia, D. R., Lucas, S., Mayer, M., Mayr, K., Mischerikow, N., Mück, K., Peinsipp, C., Petermann, O., Reiser, U., Rudolph, D., Rumpel, K., Salomon, C., Scharn, D., Schnitzer, R., Schrenk, A., Schweifer, N., Thompson, D., Traxler, E., Varecka, R., Voss, T., Weiss-Puxbaum, A., Winkler, S., Zheng, X., Zoephel, A., Kraut, N., McConnell, D., Pearson, M., & Koegl, M.
Affiliations
  • Boehringer Ingelheim (Austria) (AT)
  • Forma Therapeutics (United States) (US)
  • Northeastern University (US)
  • Boehringer Ingelheim (Germany) (DE)
Corresponding author
Koegl, Manfred
Venue
Cell Reports
Publisher
Elsevier BV
Published
2017-09
Volume
20
Issue
12
Pages
2860-2875
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2755848776
Cited by
207
References
59
Citations by year
2026: 17 · 2025: 38 · 2024: 22 · 2023: 22 · 2022: 35 · 2021: 33 · 2020: 22 · 2019: 10 · 2018: 7 · 2017: 1
FWCI
4.58
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Wirschaftsagentur Wien
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Lymphoma Diagnosis and Treatment
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
Keywords
BCL6, protein degradation, ubiquitination, BTB domain, structure-based drug design, diffuse large B-cell lymphoma, transcriptional repression, antiproliferative activity
MeSH terms
Protein Domains, DNA, Humans, Kinetics, Models, Molecular, Protein Binding, Pyrimidines, Structure-Activity Relationship, Gene Expression Regulation, Neoplastic, Inhibitory Concentration 50, Cell Line, Tumor, Proteasome Endopeptidase Complex, Cell Proliferation, Proto-Oncogene Proteins c-bcl-6, Ubiquitination, HEK293 Cells, Proteolysis

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