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Artificial Intelligence Reveals Mechanism Behind Brain Tumor

September 19, 2016 By Uppsala University

Researchers at Uppsala University have used computer modeling to study how brain tumors arise. The study, which is published in the journal EBioMedicine, illustrated how researchers in the future will be able to use large-scale data to find new disease mechanisms and identify new treatment targets.

The last 10 years’ progress in molecular biology has drastically changed how cancer researchers work. Instead of almost exclusively using different biological models, like cells, today large-scale statistical analyses are increasingly used to understand tumor diseases and find new therapies.

Researchers at Uppsala University, together with colleagues at the University of Gothenburg, Chalmers University of Technology and University of Freiburg, have developed a new algorithm, aSICS, that uses large amounts of data to suggest hypotheses about “what causes what” in a cancer cell.

In the study the researchers used aSICS to interpret data from brain tumors and they could identify a new mechanism behind mesenchymal glioblastoma, an extra aggressive brain tumor type.

“According to the computer model, mesenchymal glioblastoma is partly caused by alterations in a gene called Annexin A2. To validate the relevance of this prediction we examined samples from patients and could show that mesenchymal glioblastoma have an increased activity of Annexin A2. Subsequently, we tested to inhibit the expression of Annexin A2 in cancer cells from patients and found that the cancer cells either died or changed to a less aggressive form,” says Sven Nelander at the Department of Immunology, Genetics and Pathology at Uppsala University, who has led the study together with a colleague in Freiburg.

The results show that data analyses can be used to predict which genes or proteins influence the development of a tumor, and then confirm the prediction with experiments in the lab. The aSICS method has also been tested on other kinds of cancer, with promising results, although further studies are needed to fine-tune the settings.

More information: Teresia Kling et al. Integrative Modeling Reveals Annexin A2-mediated Epigenetic Control of Mesenchymal Glioblastoma, EBioMedicine (2016). DOI: 10.1016/j.ebiom.2016.08.050.

(Source: MedicalXpress)

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