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Updated: Mar 26, 2026

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
Published on: March 27, 2020
Tead and AP1 Coordinate Transcription and Motility
Xiangfan Liu1, Huapeng Li1, Mihir Rajurkar1
1Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Tead4 transcription factors cooperate with AP1 to drive cancer cell migration and invasion. This study reveals a key regulatory mechanism for Tead- and AP1-controlled gene expression in tumors.
Area of Science:
- Molecular Biology
- Cancer Research
- Cell Biology
Background:
- The Hippo-Yap pathway is crucial in tumorigenesis.
- Tead transcription factors mediate Hippo signaling.
- Tead-dependent oncogenic programs in cancer are not well understood.
Purpose of the Study:
- To characterize Tead4-mediated transcriptional networks in various cancer cells.
- To elucidate the interaction between Tead4 and AP1 transcription factors.
- To identify Tead-AP1 target genes and their role in cancer progression.
Main Methods:
- Genome-wide chromatin occupancy analyses of Tead4, JunD, and Fra1/2.
- Investigation of Tead-AP1 interactions and co-activator involvement (SRC1-3).
- Analysis of the Dock-Rac/CDC42 module and downstream gene expression.
Main Results:
- Tead4 cooperates with AP1 transcription factors to regulate target gene transcription.
- Tead-AP1 interaction is JNK-independent and involves SRC1-3 co-activators.
- Tead-AP1 cooperation drives expression of genes promoting cell migration and invasion.
Conclusions:
- A critical regulatory mechanism for Tead- and AP1-controlled transcription in cancer cells has been unveiled.
- This mechanism involves Tead4, AP1, SRC1-3 co-activators, and the Dock-Rac/CDC42 module.
- Understanding this pathway offers insights into cancer cell migration and invasion.
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