In a new study published today in the journal Nature, a team of scientists led by researchers from the Hebrew University of Jerusalem discovered that changes in the processing of RNA molecules – and not genetic changes in the DNA – drive pancreatic ductal adenocarcinoma (PDA) tumors to become metastatic.
This multinational study was conducted in collaboration with Sheba Medical Center and Bar Ilan University in Israel, Cornell University and Cold Spring Harbor Laboratory in the United States, and Toronto University in Canada. The study was led by doctoral student Amina Jbara of Professor Rotem Karni’s research group at the Hebrew University Faculty of Medicine.
Evaluating roughly four hundred PDA tumor samples, both non-metastatic and metastatic, the researchers discovered that a central protein that controls RNA processing, RBFOX2, is degraded and present in much lower levels in metastases.
“Our unique findings demonstrate that the disappearance of RBFOX2 protein causes hundreds of genes to produce RNAs and proteins in a different way, which contributes to the invasive capabilities of the cancer cells,” Professor Rotem Karni explained. “We found that restoring RBFOX2 to PDA metastatic cells inhibits the formation of metastases, while the elimination of RBFOX2 in non-metastatic PDA cells stimulates the formation of pancreatic cancer metastases.”... Read More: Arutz-7