PDRG1 at the interface between intermediary metabolism and oncogenesis

Area of Science:

• Molecular Biology
• Oncology
• Epigenetics

Background:

• PDRG1 is a small oncogenic protein with varied expression in normal tissues, but elevated in tumors and under genotoxic stress.
• PDRG1 interacts with macromolecular complexes involved in cancer-related processes like RNA polymerase II and splicing.
• Its interaction with methionine adenosyltransferases links it to epigenetic regulation via S-adenosylmethionine.

Purpose of the Study:

• To review current knowledge on the PDRG1 oncogene.
• To highlight PDRG1's role in S-adenosylmethionine synthesis and its implications in cancer.
• To identify areas requiring further investigation regarding PDRG1's function.

Main Methods:

• Literature review of high-throughput studies and existing research on PDRG1.
• Analysis of PDRG1's interaction with methionine adenosyltransferases.
• Correlation of PDRG1 expression with DNA hypomethylation in tumor cells.

Main Results:

• PDRG1 downregulation of S-adenosylmethionine synthesis is its first identified functional effect.
• Increased PDRG1 expression and global DNA hypomethylation are observed in many tumor cells.
• PDRG1's role in complexes like RNA polymerase II and splicing machinery remains unclear.

Conclusions:

• The interaction between PDRG1 and methionine adenosyltransferases is a potential cause of cell transformation due to DNA hypomethylation.
• PDRG1 represents a significant target for understanding cancer development.
• Numerous aspects of PDRG1's oncogenic functions and interactions warrant further exploration.