Tue Nov 05 00:00:00 UTC 2024: ## Unexpected Link Found Between Nickel and Sterol Biosynthesis
**Athens, Georgia -** Researchers at the University of Georgia have made a groundbreaking discovery connecting the heavy metal nickel to sterol biosynthesis in both fungi and mammals.
The team, publishing their findings in the journal PLoS Genetics, found that exposing mammalian and fungal cells to nickel resulted in a deficiency of sterols, essential components of cell membranes.
While nickel is known to be a contact allergen and even carcinogenic, it is also vital for the function of an enzyme called urease in plants, bacteria, and fungi. However, the study found that the effect of nickel on sterol levels was independent of urease activity.
Instead, the researchers discovered that nickel triggered the cleavage of a protein called SREBP (Sterol Regulatory Element Binding Protein), which regulates the expression of genes involved in sterol biosynthesis. This, in turn, led to a decrease in sterol production.
Further investigation revealed that the gene ERG25, which encodes an enzyme involved in sterol biosynthesis, was crucial for nickel tolerance in fungal cells. Over-expression of ERG25 restored nickel tolerance to fungal cells that were deficient in the SREBP protein.
The findings have significant implications for understanding the role of nickel in biological processes, as well as for developing novel antifungal treatments.
“This discovery opens up a new avenue for research and potentially for developing new drugs that target the ERG25 protein,” explained [Name of lead researcher], the lead author of the study. “By interfering with the nickel tolerance mechanism, we may be able to create more effective antifungal therapies.”
The research team is now investigating the potential of using ERG25 as a target for antifungal drugs. They are also exploring the role of the human equivalent of ERG25 in nickel tolerance in human cells.
This unexpected discovery highlights the importance of continued research into the complex interplay of elements in biological systems, even those seemingly unrelated. It could lead to the development of innovative treatments for a variety of conditions.
First Piper 