PanNETs
PanNETs are often associated with somatic mutations in the MEN1, DAXX, ATRX, PTEN, TSC2, and PIK3CA genes, with the MEN1 gene most frequently mutated (Jiao et al., 2011). MEN1 is a tumor suppressor gene that codes menin, a protein found in the nucleus that regulates chromatin remodeling and plays a role in cell cycle regulation (Jiao et al., 2011). A study by Schnepp et al. found that excision of the MEN1 gene in embryonic mouse tissue led to misregulation of the G0/G1 checkpoint and accelerated entry into S-phase, as well as downregulation of CDK inhibitors in the pancreas (Schnepp et al., 2006). Therefore, MEN1 is a crucial gene to prioritize in treatment as its mutated form can lead to proliferation of cells and eventually, PanNETs. The five other genes mentioned previously will also be studied to understand their interaction with MEN1, but as MEN1 is most frequently mutated, it will be the main focus of treatment. More specifically, the researchers would like to prevent MEN1 excision from occurring and explore targeted treatments involving molecules possibly related to this excision, although more research must be performed in order to find these. Further exploration of this may lead to additional signaling pathways the researchers can utilize in targeted treatment.
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