Abstract
Purpose
Triple-negative breast cancer (TNBC) represents the worst prognostic subtype of breast cancer and lacks targeted therapeutic drugs. Signal transducer and activator of transcription 3 (STAT3) is overexpressed and constitutively activated in TNBCs and associated with poor patient outcomes. However, no agents targeting STAT3 have been successfully developed and marketed. Selective Estrogen Receptor Modulators (SERMs) have been reported as potential inhibitors of the IL-6/STAT3 signaling pathway. Naphthalene compounds have good pharmacological activity and significant anti-cancer activity. In this study, we synthesized a new series of naphthalene derivatives with the general structure of SERM and evaluated their effects on TNBC and STAT3 signals.
Methods
A new series of compounds based on the scaffold of SERMs and an amino group were designed and screened based on the structure–activity relationship by MTT assay. The binding activity of SMY002 to STAT3 was predicted and validated by docking and SPR. The STAT3 signaling target and anti-cancer effects of SMY002 were evaluated with three TNBC cell lines and the mice transplanted tumor model.
Results
Among the compounds, SMY002 displayed the most potent activity, which could directly interact with STAT3 SH2-domain, and strongly inhibit the phosphorylation, dimerization, nuclear distribution, transcriptional activity, and target genes expression of STAT3. Furthermore, SMY002 markedly suppressed migration, invasion, survival, growth, and metastasis of TNBC cells in vitro and in vivo via down-regulating the expression of Cyclin D1 and MMP9.
Conclusions
SMY002 can significantly inhibit the growth and metastasis of TNBC cells by targeting the STAT3 signal.
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Data availability
The authors confirm that the data supporting the findings of this study are available within the article and its supplementary materials.
Abbreviations
- STAT3:
-
Signal transducer and activator of transcription 3
- TNBC:
-
Triple-negative breast cancer
- SERM:
-
Selective estrogen receptor modulator
- ER:
-
Estrogen receptor
- PR:
-
Progesterone receptor
- HER2:
-
Human epidermal growth factor receptor 2
- GP130:
-
Glycoprotein 130 KD
- JAKs:
-
Janus kinases
- SH2:
-
Src homology domain 2
- MMPs:
-
Matrix-metalloproteases
- Tyr705:
-
Tyrosine 705
- IC50:
-
Half-maximal inhibitory concentration
- DMSO:
-
Dimethyl sulfoxide
- SPR:
-
Surface plasmon resonance
- MTT:
-
3-(4,5-Dimethylthiazol)-2,5-diphenyltetrazolium bromide
- DAPI:
-
4,6-Diamidino-2-phenylindole
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Acknowledgements
We acknowledge the National Natural Science Foundation of China for funding the project (Nos. 81803575, 31902287) and the Henan Science and Technology Department of China for financing the project (No. G20190126005). We also thank the Department of Science and Technology, Government of Kaifeng, China, for funding the project (No. 21SSF003)), the Key R&D and promotion projects of Kaifeng (No. 2203008).
Funding
This work was supported by grants from the High-End Foreign Experts Introduction Plan of Henan Science and Technology Department (No. G20190126005), Kaifeng Science and Technology Development Plan Project (No. 21SSF003), Youth Fund of National Natural Science Foundation of China (No. 81803575).
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All authors contributed to the study’s conception and design. Zhengyan Yang contributed to conceptualization and writing-original draft. Hongyun Xu contributed to investigation and validation. Yupo Yang and Chaoqun Duan contributed to the synthesis and analysis of the compounds. Pai Zhang contributed to the data curation. Yang Wang contributed to resource collection. Kai Fu contributed to methodology and formal analysis. Yonghong Shen contributed to the writing-reviewing, and editing of the manuscript. Marvin Xuejun Xu contributed to funding acquisition and project administration. All authors read and approved the final manuscript.
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Yang, Z., Xu, H., Yang, Y. et al. Synthesis and evaluation of naphthalene derivatives as potent STAT3 inhibitors and agents against triple-negative breast cancer growth and metastasis. Breast Cancer Res Treat 197, 255–267 (2023). https://doi.org/10.1007/s10549-022-06790-2
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DOI: https://doi.org/10.1007/s10549-022-06790-2