New role for protein could lead to novel treatments for cancer and vascular disease

New role for protein could lead to novel treatments for cancer and vascular disease
In this set of images, the localization of b catenin (green, top left) and FMRP (red, top right) are shown. The cellular nucleus is stained blue (lower left). The merged image (lower, right) indicates the co-localization of the two proteins. Credit: EMBO Reports

Researchers at York University have found a new role for a well-known protein in the body that may explain, in part, what goes wrong in certain cancers, as well as vascular and neurological disorders.

Beta-catenin, a wide-ranging and important for the regulation of cell function from the embryonic stage to adulthood, has already been implicated in the development of certain cancers, including colon, breast, leukemia and melanoma.

Lead researcher, biology Professor John McDermott of the Faculty of Science and his team, have found new intracellular interactions between beta-catenin and other proteins, which highlight a previously unknown role for this protein.

They show that beta-catenin not only has a role in gene expression, but it is also implicated in the control of messenger ribonucleic acid (mRNA) translation—the process by which genetic information is translated into protein in the machinery of the cell.

The findings surprised the researchers. "Beta-catenin is known to have an expansive role in cell biology, including a role in the nucleus in and at cell membranes, but this finding points to a new, and potentially important role for this 'jack-of-all-trades' protein," said McDermott. "It's a novel role for beta-catenin which was previously unknown despite there being thousands of published papers about this protein in the scientific literature."

In collaboration with the Bayfield lab at York, they found evidence that beta-catenin is recruited by the fragile X mental retardation protein (FMRP) to the cellular machinery to help regulate the translation of mRNA into protein. mRNA carries the about in proteins, which it copies from the DNA.

The research indicates that beta-catenin, when recruited to the translation machinery, represses . Upon appropriate signals, it then leaves this complex to allow cellular protein production to be increased. If proper regulation doesn't happen at this step, it could contribute to problems associated with some cancers and neurological diseases.

This newly found role for beta-catenin is important as it provides a window into a process that was previously unknown and that can potentially lead to the development of novel therapeutic interventions.

"The next steps are to try to target these novel properties of beta-catenin in various disease states," said McDermott.

More information: Saviz Ehyai et al, FMRP recruitment of β‐catenin to the translation pre‐initiation complex represses translation, EMBO reports (2018). DOI: 10.15252/embr.201745536

Journal information: EMBO Reports
Provided by York University
Citation: New role for protein could lead to novel treatments for cancer and vascular disease (2018, October 25) retrieved 19 March 2024 from https://medicalxpress.com/news/2018-10-role-protein-treatments-cancer-vascular.html
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