Cited by 236Cytokine Signaling Pathways and InteractionsProtein Degradation and InhibitorsSynthesis and biological activity

Recent Update on Development of Small-Molecule STAT3 Inhibitors for Cancer Therapy: From Phosphorylation Inhibition to Protein Degradation

Dong, Jinyun, Cheng, Xiang-Dong, Zhang, Wei-Dong, Qin, Jiang-Jiang·2021·Journal of Medicinal Chemistry

Abstract

Signal transducer and activator of transcription 3 (STAT3) is a transcription factor that regulates various biological processes, including proliferation, metastasis, angiogenesis, immune response, and chemoresistance. In normal cells, STAT3 is tightly regulated to maintain a transiently active state, while persistent STAT3 activation occurs frequently in cancers, associating with a poor prognosis and tumor progression. Targeting the STAT3 protein is a potentially promising therapeutic strategy for tumors. Although none of the STAT3 inhibitors has been marketed yet, a few of them have succeeded in entering clinical trials. This Review aims to systematically summarize the progress of the last 5 years in the discovery of directive STAT3 small-molecule inhibitors and degraders, focusing primarily on their structural features, design strategies, and bioactivities. We hope this Review will shed light on future drug design and inhibitor optimization to accelerate the discovery process of STAT3 inhibitors or degraders.

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Crossref · 10.1021/acs.jmedchem.1c00629

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170 of 170 references verified0 citation errors · 0 not checkable

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  • CCD has a large hydrophilic surface predominantly involved in recruitment of STAT3 to its receptor, essential for activation via SH2 domain-mediated receptor binding, phosphorylation, and nuclear translocation.

    “CCD has a large hydrophilic surface predominantly involved in the recruitment of STAT3 to its receptor [50], which is essential not only for its activation via SH2 domain‐mediated receptor binding but also for its activation via phosphorylation [51] and nuclear translocation [52].”
  • STAT3 has six common structural motifs: NTD, CCD, DBD, linker domain, SH2, and transactivation domain.

    “STAT3 has six common structural motifs, namely, NTD, CCD, DBD, the linker domain, the Src homology 2 domain (SH2), and the transactivation domain [50].”

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Authors
Dong, J., Cheng, X.-D., Zhang, W.-D., & Qin, J.-J.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, Zhejiang 310022, China
  • School of Pharmacy, Naval Medical University, Shanghai 200433, China
Corresponding author
Qin, Jiang-Jiang
Venue
Journal of Medicinal Chemistry
Published
2021-06-25
Volume
64
Issue
13
Pages
8884-8915
ISSN
  • 0022-2623 (ISSN-L)
  • 1520-4804
OpenAlex
W3175064583
Cited by
232
References
170
Citations by year
2026: 45 · 2025: 57 · 2024: 56 · 2023: 44 · 2022: 28 · 2021: 2
FWCI
4.06
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Medicinal Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (81903842)
  • Natural Science Foundation of Zhejiang Province (LQ21B020003, LR21H280001)
  • Zhejiang Province (2020ZZ005)
Topics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Physical Sciences › Chemistry › Organic Chemistry › Synthesis and biological activity
Keywords
STAT3, small molecule inhibitors, protein degraders, phosphorylation inhibition, cancer therapy, drug design, inhibitor optimization, structural features, clinical trials, chemoresistance, tumor progression
MeSH terms
Drug Development, Antineoplastic Agents, Humans, Neoplasms, Phosphorylation, Molecular Structure, STAT3 Transcription Factor, Small Molecule Libraries

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