Research conducted at The Scripps Research Institute (TSRI) has discovered links between a set of genes known to promote tumour growth and mucoepidermoid carcinoma, an oral cancer that affects the salivary glands. The discovery could help physicians develop new treatments that target the cancer’s underlying genetic causes. The research, published by the Proceedings of the National Academy of Sciences, shows that a pair of proteins joined together by a genetic mutation, known as CRTC1/MAML2 (C1/M2), work with MYC, a protein commonly associated with other cancers, to promote the oral cancer’s growth and spread. This research provides new insights into the molecular mechanisms of these malignances and points to a new direction for potential therapies.
The C1/M2 protein is created when the genes encoding CRTC1 and MAML2 mutate into a single gene through a process known as chromosomal translocation. Such mutant ‘chimera’ genes are linked to the formation of several forms of cancer. The team discovered that the C1/M2 protein further activates genetic pathways regulated by MYC, in addition to CREB, to begin a series of cellular changes leading to the development of mucoepidermoid carcinoma.
The identification of unique interactions between C1/M2 and MYC suggests that drugs capable of disrupting these interactions may have therapeutic potential in the treatment of mucoepidermoid carcinomas.
Researchers have known about the role of C1/M2 and its interactions with another protein, CREB, in the development of mucoepidermoid carcinoma, and physicians screen patients for the presence of the C1/M2 protein when testing for this cancer. These new findings deepen the understanding of C1/M2’s role by revealing that it works with a family of cancer-associated genes known as the MYC family to drive the cellular changes necessary for a tumour to develop.
The discovery of these new protein interactions may also reveal insights into the mechanisms behind other cancers that arise due to other genetic mutations involving the CREB and MYC pathways.
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An avid campaigner in the fight against child sex abuse and trafficking, Michelle is a passionate humanist striving for a better quality of life for all humans by helping to provide traction for new technologies and techniques within healthcare.