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Targeting Brd4 for cancer therapy: inhibitors and degraders
Yingchao Duan1, Yuanyuan Guan1, Wenping Qin1
1School of Pharmacy , Xinxiang Medical University , Xinxiang , Henan 453003 , China.
Abstract:
Bromodomain-containing protein 4 (Brd4) plays an important role in mediating the expression of genes involved in cancers and non-cancer diseases such as inflammatory diseases and acute heart failure. Inactivating Brd4 or downregulating its expression inhibits cancer development, leading to the current interest in Brd4 as a promising anticancer drug target. Numerous Brd4 inhibitors have been studied in recent years and some of them are currently in various phases of clinical trials. Recently, selective degradation of target proteins by small bifunctional molecules (PROTACs) has emerged as an attractive drug discovery approach owing to the advantages it could offer over traditional small-molecule inhibitors. A number of Brd4 degraders have been reported and showed more efficient anticancer activities than just protein inhibition. In this review, we will discuss recent findings in the discovery and development of small-molecule inhibitors and degraders that target Brd4 as a potential anticancer agent.
Insights
Bromodomain-containing protein 4 (Brd4) is a key target for cancer therapy. New Brd4 degraders show greater anticancer efficacy than inhibitors, offering a promising therapeutic strategy.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Bromodomain-containing protein 4 (Brd4) is implicated in gene expression for cancers and other diseases.
- Inhibiting or downregulating Brd4 shows potential for cancer treatment, making it a significant drug target.
- Br4 inhibitors are under clinical investigation, highlighting their therapeutic relevance.
Purpose of the Study:
- To review recent advancements in small-molecule inhibitors targeting Brd4.
- To discuss the development of Brd4 degraders as a novel therapeutic approach.
- To explore the potential of Brd4-targeted agents in cancer therapy.
Main Methods:
- Literature review of Brd4 inhibitors and degraders.
- Analysis of studies on Brd4's role in cancer development.
- Examination of PROTAC technology for targeted protein degradation.
Main Results:
- Numerous Brd4 inhibitors have been developed and are in clinical trials.
- Selective protein degradation using PROTACs is a promising drug discovery strategy.
- Br4 degraders demonstrate superior anticancer activity compared to traditional inhibitors.
Conclusions:
- Targeting Brd4 with small molecules offers a viable anticancer strategy.
- Brd4 degraders represent a more effective approach than simple inhibition.
- Further research into Brd4-targeted agents holds significant therapeutic promise.
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