Evidence map›Paper›PMID 28595007›Full record

ArticleJournal of medicinal chemistry2018

Impact of Target Warhead and Linkage Vector on Inducing Protein Degradation: Comparison of Bromodomain and Extra-Terminal (BET) Degraders Derived from Triazolodiazepine (JQ1) and Tetrahydroquinoline (I-BET726) BET Inhibitor Scaffolds.

Kwok-Ho Chan, Michael Zengerle, Andrea Testa, Alessio Ciulli

Abstract readComparative Study
In one paragraph

Article in Journal of medicinal chemistry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

100 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. A Chemically Induced CRISPR/dCas13Journal of medicinal chemistry · 2025
    Article
  10. Review
  11. Article
  12. Methods to accelerate PROTAC drug discovery.The Biochemical journal · 2025
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. An updated patent review of BRD4 degraders.Expert opinion on therapeutic patents · 2024
    Review
  19. Review
  20. Article

40 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kwok-Ho ChanDivision of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee , Dow Street, Dundee, DD1 5EH, Scotland, U.K.
Michael ZengerleDivision of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee , Dow Street, Dundee, DD1 5EH, Scotland, U.K.
Andrea TestaDivision of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee , Dow Street, Dundee, DD1 5EH, Scotland, U.K.
Alessio CiulliDivision of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee , Dow Street, Dundee, DD1 5EH, Scotland, U.K.ORCID 0000-0002-8654-1670

Funding

Biotechnology and Biological Sciences Research Council BB/J001201/2European Research Council 311460Wellcome Trust
6 · The paper itself

Abstract

The design of proteolysis-targeting chimeras (PROTACs) is a powerful small-molecule approach for inducing protein degradation. PROTACs conjugate a target warhead to an E3 ubiquitin ligase ligand via a linker. Here we examined the impact of derivatizing two different BET bromodomain inhibitors, triazolodiazepine JQ1 and the more potent tetrahydroquinoline I-BET726, via distinct exit vectors, using different polyethylene glycol linkers to VHL ligand VH032. Triazolodiazepine PROTACs exhibited positive cooperativities of ternary complex formation and were more potent degraders than tetrahydroquinoline compounds, which showed negative cooperativities instead. Marked dependency on linker length was observed for BET-degrading and cMyc-driven antiproliferative activities in acute myeloid leukemia cell lines. This work exemplifies as a cautionary tale how a more potent inhibitor does not necessarily generate more potent PROTACs and underscores the key roles played by the conjugation. The provided insights and framework for structure-activity relationships of bivalent degraders are anticipated to have wide future applicability.

Indexed as

Structure-Activity RelationshipAminoquinolinesAzepinesBenzoatesBromodomain Containing ProteinsCalorimetryCell Cycle ProteinsChemistry Techniques, SyntheticDrug Evaluation, PreclinicalHeLa CellsHL-60 CellsHumansNuclear ProteinsProteolysisProto-Oncogene Proteins c-mycRNA-Binding Proteins4-(1-acetyl-4-((4-chlorophenyl)amino)-2-methyl-1,2,3,4-tetrahydroquinolin-6-yl)benzoic acidAminoquinolinesAzepinesBenzoatesBRD3 protein, humanBRD4 protein, humanBromodomain Containing ProteinsCell Cycle ProteinsNuclear ProteinsProto-Oncogene Proteins c-mycRNA-Binding ProteinsTranscription FactorsTriazolesVHL protein, humanVon Hippel-Lindau Tumor Suppressor ProteinWEB 2086

Identifiers

PMID28595007
PMCPMC5788402

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.