SHF Acts as a Novel Tumor Suppressor in Glioblastoma Multiforme by Disrupting STAT3 Dimerization
Open accessAbstract
Sustained activation of signal transducer and activator of transcription 3 (STAT3) is a critical contributor in tumorigenesis and chemoresistance, thus making it an attractive cancer therapeutic target. Here, SH2 domain‐containing adapter protein F (SHF) is identified as a tumor suppressor in glioblastoma Multiforme (GBM) and its negative regulation of STAT3 activity is characterized. Mechanically, SHF selectively binds and inhibits acetylated STAT3 dimerization without affecting STAT3 phosphorylation or acetylation. Additionally, by blocking STAT3‐DNMT1 (DNA Methyltransferase 1) interaction, SHF relieves methylation of tumor suppressor genes. The SH2 domain is documented to be essential for SHF's actions on STAT3, and almost entirely replaces the functions of SHF on STAT3 independently. Moreover, the peptide C16 a peptide derived from the STAT3‐binding sites of SHF inhibits STAT3 dimerization and STAT3/DNMT1 interaction, and achieves remarkable growth inhibition in GBM cells in vitro and in vivo. These findings strongly identify targeting of the SHF/STAT3 interaction as a promising strategy for developing an optimal STAT3 inhibitor and provide early evidence of the potential clinical efficacy of STAT3 inhibitors such as C16 in GBM.
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STAT3 Tyr 705 phosphorylation induces STAT3 dimerization and nuclear translocation and upregulates STAT3's transcriptional activity.
“STAT3 Tyr 705 phosphorylation has been reported to induce STAT3 dimerization and nuclear translocation and upregulate STAT3's transcriptional activity [28, 29].”
From Saikosaponin b1 Attenuates Liver Fibrosis by Blocking STAT3/Gli1 Interaction and Inducing Gli1 Degradation (2025) · cites this paper as [29]
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Novel roles of unphosphorylated STAT3 in oncogenesis and transcriptional regulation
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Cited by
Sorted by citations
Shao, M., Zhang, X., Sun, J., Dong, H., Han, X., Yang, Q., Chen, R., Shen, L., Xu, L., Wang, L., et al. (2025) · Exploration · doi:10.1002/exp.70000 · Cited by 26 · see citing works
- Authors
- Wang, J., Huang, Z., Ji, L., Chen, C., Wan, Q., Xin, Y., Pu, Z., Li, K., Jiao, J., Yin, Y., Hu, Y., Gong, L., Zhang, R., Yang, X., Fang, X., Wang, M., Zhang, B., Shao, J., & Zou, J.
- Affiliations
- Wuxi People's Hospital (CN)
- Department of Laboratory Medicine Wuxi People's Hospital of Nanjing Medical University Wuxi Jiangsu 214023 China
- Nanjing Medical University (CN)
- Jiangnan University (CN)
- Corresponding author
- Zhang, Bo
- Shao, Junfei
- Zou, Jian
- ORCID
- Venue
- Advanced Science
- Publisher
- Wiley
- Published
- 2022-07-17
- Volume
- 9
- Issue
- 26
- Pages
- e2200169-e2200169
- ISSN
- 2198-3844 (ISSN-L)
- PMC
- PMC9475553
- OpenAlex
- W4285731533
- Cited by
- 22
- References
- 2
- Citations by year
- 2026: 4 · 2025: 9 · 2024: 4 · 2023: 4 · 2022: 1
- FWCI
- 1.88
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Advanced Science (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Natural Science Foundation of China (81872056, 82172954, 81572468, 81372710, 81903391, 81802493, 82003581, 82172955)
- Natural Science Foundation of Jiangsu Province (BK20191140, BK20190148)
- Topics
- Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
- Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
- Keywords
- STAT3, glioblastoma, tumor suppressor, STAT3 dimerization, STAT3 acetylation, DNMT1, DNA methylation, SH2 domain, STAT3 inhibitor, chemoresistance
- MeSH terms
- Glioblastoma, Humans, Phosphorylation, Genes, Tumor Suppressor, Dimerization, Intracellular Signaling Peptides and Proteins, STAT3 Transcription Factor, Protein Multimerization
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