The p53 homologue TAp73 is frequently overexpressed in tumours, suggesting it provides an advantage to cancer cells. Yang and colleagues have investigated the role of TAp73 in tumour cell proliferation and showed that TAp73, but not p53, is a transcriptional activator of glucose-6-phosphate dehydrogenase. Increased expression of this gene promotes the pentose phosphate pathway flux, leading to enhanced biosynthesis and antioxidant defence, both of which have been shown to support optimal cell proliferation and tumour formation.
- Wenjing Du
- Peng Jiang
- Xiaolu Yang