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Optimizations of an ELISA-like high-throughput screening assay for the discovery of β-catenin/TCF4 interaction antagonists / 生物工程学报
Chinese Journal of Biotechnology ; (12): 2878-2889, 2021.
Article in Chinese | WPRIM | ID: wpr-887850
ABSTRACT
In canonical Wnt/β-catenin signaling pathway, β-catenin/TCF4 (T-cell factor 4) interaction plays an important role in the pathogenesis and development of non-small cell lung cancer (NSCLC), and it is tightly associated with the proliferation, chemoresistance, recurrence and metastasis of NSCLC. Therefore, suppressing β-catenin/TCF4 interaction in Wnt/β-catenin signaling pathway would be a new therapeutic avenue against NSCLC metastasis. In this study, considering the principle of enzyme-linked immunosorbent assay (ELISA), an optimized high-throughput screening (HTS) assay was developed for the discovery of β-catenin/TCF4 interaction antagonists. Subsequently, this ELISA-like screening assay was performed using 2 μg/mL GST-TCF4 βBD and 0.5 μg/mL β-catenin, then a high Z' factor of 0.83 was achieved. A pilot screening of a natural product library using this ELISA-like screening assay identified plumbagin as a potential β-catenin/TCF4 interaction antagonist. Plumbagin remarkably inhibited the proliferation of A549, H1299, MCF7 and SW480 cell lines. More importantly, plumbagin significantly suppressed the β-catenin-responsive transcription in TOPFlash assay. In short, this newly developed ELISA-like screening assay will be vital for the rapid screening of novel Wnt inhibitors targeting β-catenin/TCF4 interaction, and this interaction is a potential anticancer target of plumbagin in vitro.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Enzyme-Linked Immunosorbent Assay / Carcinoma, Non-Small-Cell Lung / Cell Line, Tumor / Beta Catenin / High-Throughput Screening Assays / Transcription Factor 4 / Lung Neoplasms Type of study: Diagnostic study / Prognostic study / Screening study Limits: Humans Language: Chinese Journal: Chinese Journal of Biotechnology Year: 2021 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Enzyme-Linked Immunosorbent Assay / Carcinoma, Non-Small-Cell Lung / Cell Line, Tumor / Beta Catenin / High-Throughput Screening Assays / Transcription Factor 4 / Lung Neoplasms Type of study: Diagnostic study / Prognostic study / Screening study Limits: Humans Language: Chinese Journal: Chinese Journal of Biotechnology Year: 2021 Type: Article