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The proline regulatory axis and cancer
James Ming Phang1, Wei Liu, Chad Hancock
1Metabolism and Cancer Susceptibility Section, Basic Research Laboratory, Center for Cancer Research, Frederick National Laboratory for Cancer Research Frederick, MD, USA.
Frontiers in Oncology
|June 28, 2012
Summary
Cancer metabolism research reveals MYC oncogene activates glutamine-to-proline pathway, impacting cell regulation and offering new therapeutic targets for cancer treatment.
Area of Science:
- Metabolic pathways in cancer
- Amino acid metabolism
- Cellular regulation
Background:
- Cancer cells alter glucose and glutamine metabolism for growth.
- Peripheral metabolic pathways, including non-essential amino acids, are increasingly recognized for regulatory roles.
- The proline biosynthetic pathway's link to glucose metabolism and its activation by p53 in apoptosis were previously proposed.
Purpose of the Study:
- To investigate the role of the glutamine-to-proline pathway in cancer.
- To explore the regulation of proline metabolism by oncogenes.
- To identify novel therapeutic targets in cancer metabolism.
Main Methods:
- Analysis of metabolic pathways.
- Investigation of oncogene-driven metabolic alterations.
- Study of amino acid biosynthesis and degradation.
Main Results:
- The oncogene MYC markedly activates the pathway from glutamine to proline.
- Proline biosynthesis and its metabolic interlock with glucose metabolism are dependent on this MYC-activated pathway.
- This highlights a new regulatory axis for proline in cancer.
Conclusions:
- The glutamine-to-proline pathway, activated by MYC, represents a significant regulatory axis in cancer metabolism.
- Targeting this pathway offers potential new strategies for cancer therapy.
- Understanding proline's role in cancer provides novel therapeutic avenues.
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