Health
High blood sugar may help cancer cells evade the immune system
Researchers found that elevated glucose levels can thicken a tumor's protective sugar coating, helping it hide from immune detection.
The short version
- A study suggests that high blood sugar and tumor microenvironments help cancer cells build a thick, protective sugar coating called the glycocalyx.
- The glycocalyx acts as camouflage, preventing immune cells from identifying and destroying the cancer.
- Researchers identified the protein HSF1 as a key driver of this process, pointing to a potential target for new cancer therapies.
Key facts
- The study, published in Science Advances on August 7, 2026, was led by researchers at the Sanford Burnham Prebys Medical Discovery Institute along with North American collaborating institutions.[ScienceDaily]
- Excess glucose increased the thickness of the cancer cells' glycocalyx, but only when the cells were grown in physiological media resembling the human body rather than standard laboratory media.[ScienceDaily]
- The protein heat shock factor 1 (HSF1), which typically helps cells survive stress, was found to be necessary for hyperglycemia to enhance a cancer cell's immune evasion in tumor-like conditions.[ScienceDaily]
- Previous research has linked hyperglycemia to poorer outcomes in cancer treatment and an increased risk of developing the disease.[ScienceDaily]
What remains uncertain
- Whether targeting HSF1 with drugs can successfully reduce the glycocalyx coating and improve immunotherapy outcomes in human patients remains to be clinically tested.[ScienceDaily]
Sources
- High blood sugar may help cancer cells hide from the immune systemScienceDaily - Health