Researchers at UBC Okanagan have finally cracked the molecular code for mitraphylline, a rare plant compound that might fight cancer - assuming you can find enough of it to bother testing. The compound belongs to a class known as spirooxindole alkaloids, which are basically nature's way of showing off with twisted ring structures and impressive biological party tricks like anti-inflammatory and anti-tumor activity.

For years, scientists knew these compounds existed but had no clue how plants actually built them. That changed in 2023 when Dr. Thu-Thuy Dang's team identified the first plant enzyme capable of twisting a molecule into the signature spiro shape. Now, doctoral student Tuan-Anh Nguyen has uncovered two more critical enzymes: one that folds the molecule into the correct 3D structure, and another that turns it into mitraphylline itself. "This is similar to finding the missing links in an assembly line," Dr. Dang said, presumably while resisting the urge to make a car factory analogy.

Mitraphylline is found only in trace amounts in tropical trees like Mitragyna (kratom) and Uncaria (cat's claw), both members of the coffee family - because of course your morning brew's relatives are hiding cancer-fighting secrets. Now that the enzymes are identified, researchers have a clearer path to producing the compound sustainably, using what Nguyen calls "a green chemistry approach" - which is science-speak for "we can stop chopping down rare trees."

The research, published with funding from Canada's Natural Sciences and Engineering Research Council, the Canada Foundation for Innovation, and the Michael Smith Health Research BC Scholar Program, also involved Dr. Satya Nadakuduti's group at the University of Florida. "Plants are fantastic natural chemists," Dr. Dang said. Next up: adapting their molecular tools to create a wider range of therapeutic compounds - assuming the plants don't unionize first.