Low Oxygen Slows Tumor Growth: Indian Researchers Uncover New Cancer Treatment Path

• Indian researchers are exploring systemic hypoxia (reduced oxygen) to slow tumor growth, a potential new cancer treatment strategy.
• Paradoxical observations: low-oxygen tumors have poor prognosis, but high-altitude populations have lower cancer mortality.
• Mice with tumors exposed to lower oxygen (11% and 8%) showed significantly reduced tumor growth compared to normal oxygen (21%).
• Hypoxia suppresses the energy-intensive de novo purine synthesis pathway, reducing purine nucleotides essential for DNA and cell growth.
• Low-oxygen conditions enhanced the tumor-suppressing effects of chemotherapy (gemcitabine) and immunotherapy (anti-CTLA4).