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Cancer systems biology identifies master regulators and new drug targets in therapy-resistant cancer

New research published today in npj Systems Biology and Applications establishes how genome-wide data in combination with systems biology analyses can identify master regulators and new drug targets in therapy-resistant cancers.

The new discovery explains how cancer controls specific effector networks — findings with important implications for the future of cancer therapy.

Scientists have realized the importance of epigenomic control in development and disease processes.

“Epigenomics does not directly affect the DNA itself,” Professor Fabian V. Filipp said. “A hidden layer of regulation controls the activity of genes.”

Filipp is a professor of Systems Biology and Cancer Metabolism and his research team is affiliated with UC Merced’s School of Natural Sciences and the Health Science Research Institute.

Epigenomic and metabolic signals beyond the genetic code of DNA determine which cellular programs are active and which ones are silenced. 

Such epigenomic control networks have important implications for the future of cancer therapy.

“In cancer, if we disregard or insufficiently understand epigenomic networks, tumour cells have the ability to rapidly adapt to drug treatment and resistance may arise,” Filipp said.

In cancer, epigenetic master regulators accomplish target-specificity of their phenotypic program by cooperation with members of the transcriptional machinery.

Filipp’s cancer systems biology team at UC Merced introduced a universal workflow for elucidation of regulatory cooperation networks.

On the one hand epigenomic target regions define accessible chromatin, on the other hand motifs of differentially expressed transcripts determine the target genes controlled by the cooperative forces.

“By integrating different genomic features of complementary epigenomic and transcriptomic data, a highly specific and hyperconnected network can be identified,” Filipp said.

Source: University of California Merced



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