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Updated: Dec 10, 2025

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
Published on: June 27, 2020
Perturbation-based gene regulatory network inference to unravel oncogenic mechanisms
Daniel Morgan1, Matthew Studham1, Andreas Tjärnberg1,2
1Department of Biochemistry and Biophysics, Stockholm University, Science for Life Laboratory, Box 1031, 17121, Solna, Sweden.
Abstract:
The gene regulatory network (GRN) of human cells encodes mechanisms to ensure proper functioning. However, if this GRN is dysregulated, the cell may enter into a disease state such as cancer. Understanding the GRN as a system can therefore help identify novel mechanisms underlying disease, which can lead to new therapies. To deduce regulatory interactions relevant to cancer, we applied a recent computational inference framework to data from perturbation experiments in squamous carcinoma cell line A431. GRNs were inferred using several methods, and the false discovery rate was controlled by the NestBoot framework. We developed a novel approach to assess the predictiveness of inferred GRNs against validation data, despite the lack of a gold standard. The best GRN was significantly more predictive than the null model, both in cross-validated benchmarks and for an independent dataset of the same genes under a different perturbation design. The inferred GRN captures many known regulatory interactions central to cancer-relevant processes in addition to predicting many novel interactions, some of which were experimentally validated, thus providing mechanistic insights that are useful for future cancer research.
Insights
This study infers gene regulatory networks (GRNs) in cancer cells to uncover disease mechanisms. The developed computational framework accurately predicts regulatory interactions, offering new insights for cancer therapy development.
Area of Science:
- Systems biology
- Genomics
- Computational biology
Background:
- Gene regulatory networks (GRNs) govern cellular functions.
- Dysregulation of GRNs is linked to diseases like cancer.
- Understanding GRNs can reveal novel disease mechanisms and therapeutic targets.
Purpose of the Study:
- To infer cancer-relevant gene regulatory networks (GRNs).
- To identify novel regulatory interactions in squamous carcinoma.
- To provide mechanistic insights for cancer research and therapy development.
Main Methods:
- Applied a computational inference framework to perturbation data from A431 squamous carcinoma cells.
- Inferred GRNs using multiple methods with false discovery rate control via the NestBoot framework.
- Developed a novel approach to assess GRN predictiveness against validation data.
Main Results:
- The best inferred GRN demonstrated significantly higher predictiveness than a null model.
- Predictiveness was validated through cross-validated benchmarks and an independent dataset.
- The GRN captured known cancer-relevant interactions and predicted novel, experimentally validated interactions.
Conclusions:
- Inferred GRNs provide valuable mechanistic insights into cancer biology.
- The computational framework effectively identifies predictive regulatory interactions.
- This approach aids in discovering novel therapeutic strategies for cancer.
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