( vised the project. “Our insight was to ...)Hybrid Molecule Causes Cancer Cells to Self-Destruct,Health

vised the project. “Our insight was to select the sugar partner to serve not just as a passive carrier but as additional ammunition in the fight against cancer.”

The researchers focused on a sugar called N-acetyl-D-mannosamine, or ManNAc, for short. The team created a hybrid molecule by linking ManNAc with butyrate. The hybrid easily penetrates a cell’s surface, then is split apart by enzymes inside the cell. Once inside the cell, ManNAc is processed into another sugar known as sialic acid that plays key roles in cancer biology, while butyrate orchestrates the expression of genes responsible for halting the uncontrolled growth of cancer cells.

Although the study of the exact molecular mechanism is in its early stages, the researchers believe the separate chemical components work together to bolster the cancer-fighting power of butyrate. The double attack triggers cellular suicide, also called apoptosis, in the cancer cells.

To find out whether this butyrate-ManNAc hybrid alone would produce the positive results, the researchers tested three other sugar-butyrate combinations and a butyrate salt compound with no sugar attached. The four other formulas and the butyrate-ManNAc hybrid were each added to lab dishes containing cancer cells. After three to five days, cancer growth had slowed in all of the dishes. After 15 days, however, cancer growth had resumed in dishes treated with four of the compounds. But in samples treated with the butyrate-ManNAc hybrid, all of the cancer cells had died.

The researchers also wanted to find out whether administering the two parts of the hybrid independently would achieve the same result. But in these experiments, the cancer cells did not self-destruct. The researchers suspect this is because the hybrid molecules more easily penetrate the surface of the cell than the individual chemicals. Once the components are inside, the researchers believe the partners help enzymes to resume the normal a
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