An isoflavone derivative potently inhibits the angiogenesis and progression of triple-negative breast cancer by targeting the MTA2/SerRS/VEGFA pathway

• Published in: Cancer biology & medicine Vol. 17; no. 3; pp. 693 - 706
• Main Authors: Zhang, Xiaotong, Zou, Gengyi, Li, Xiyang, Wang, Lun, Xie, Tianyu, Zhao, Jin, Wang, Longlong, Jiao, Shunchang, Xiang, Rong, Ye, Haoyu, Shi, Yi
• Format: Journal Article
• Language: English
• Published: China Chinese Anti-Cancer Association (CACA), Cancer Biology & Medicine 15.08.2020; 2011 Project Collaborative Innovation Center for Biotherapy of Ministry of Education, Tianjin 300071, China%School of Medicine, Nankai University, Tianjin 300071, China; 2011 Project Collaborative Innovation Center for Biotherapy of Ministry of Education, Tianjin 300071, China; School of Medicine, Nankai University, Tianjin 300071, China; Department of Oncology, Chinese PLA General Hospital, Beijing 100853, China%State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China%Department of Oncology, Chinese PLA General Hospital, Beijing 100853, China; Compuscript; China Anti-Cancer Association
• Subjects: Allografts; Angiogenesis; Angiogenesis Inhibitors - pharmacology; Animal models; Animals; Antibodies; Biotechnology; Breast cancer; Cancer therapies; Cell Proliferation; Embryos; Enzymes; Female; Gene Expression Regulation, Neoplastic; Histone Deacetylases - metabolism; Humans; isoflavone; Isoflavones; Isoflavones - antagonists & inhibitors; Laboratories; Metastases; Mice; Mice, Inbred BALB C; mta2; Neovascularization, Pathologic - metabolism; Neovascularization, Pathologic - pathology; Neovascularization, Pathologic - prevention & control; Original; Permeability; Polymerase chain reaction; Proteins; Proteomics; Random Allocation; Repressor Proteins - metabolism; Serine-tRNA Ligase - metabolism; serrs; Signal Transduction - drug effects; Transcription; Triple Negative Breast Neoplasms - drug therapy; Triple Negative Breast Neoplasms - metabolism; Triple Negative Breast Neoplasms - pathology; tRNA; tumor angiogenesis; Tumors; Up-Regulation; Vascular endothelial growth factor; Vascular Endothelial Growth Factor A - metabolism; vegfa; Western blotting; Xenograft Model Antitumor Assays; Xenografts; Zebrafish - metabolism; United States > US; China; Japan; Isoflavone; SerRS; MTA2; tumor angiogenesis; VEGFA
• ISSN: 2095-3941
• DOI: 10.20892/j.issn.2095-3941.2020.0010

Angiogenesis plays a vital role in tumor growth and metastasis. Here, we aimed to find novel efficient antiangiogenic molecules targeting vascular endothelial growth factor A (VEGFA ) at the transcriptional level to treat triple-negative breast cancer (TNBC). We used a cell-based seryl tRNA synthetase (SerRS) promoter-driven dual-luciferase reporter system to screen an in-house library of 384 naturally occurring small molecules and their derivatives to find candidate molecules that could upregulate the expression of SerRS, a potent transcriptional repressor of VEGFA. The levels of SerRS and VEGFA were examined by quantitative RT-PCR (qRT-PCR), western blotting, and/or ELISAs in TNBC cells after candidate molecule administration. Zebrafish, the Matrigel plug angiogenesis assay in mice, the TNBC allograft, and xenograft mouse models were used to evaluate the anti-angiogenic and anti-cancer activities. Furthermore, the potential direct targets of the candidates were identified by proteomics and biochemical studies. We found the most active compound was 3-(4-methoxyphenyl) quinolin-4(1H)-one (MEQ), an isoflavone derivative. In TNBC cells, MEQ treatment resulted in increased SerRS mRNA ( < 0.001) and protein levels and downregulated VEGFA production. Both the vascular development of zebrafish and Matrigel plug angiogenesis in mice were inhibited by MEQ. MEQ also suppressed the angiogenesis in TNBC allografts and xenografts in mice, resulting in inhibited tumor growth and prolonged overall survival ( < 0.05). Finally, we found that MEQ regulated SerRS transcription by interacting with MTA2 (Metastasis Associated 1 Family Member 2). Our findings suggested that the MTA2/SerRS/VEGFA axis is a drug-treatable anti-angiogenic target, and MEQ is a promising anti-tumor molecule that merits further investigation for clinical applications.