Multiple intracellular zinc-binding proteins and metabolic pathways

The target Multiple intracellular zinc-binding proteins and metabolic pathways refers to the extensive network of proteins and biochemical routes that utilize zinc as an essential cofactor for structural stability or catalytic activity. This network encompasses approximately 10% of the human proteome, including over 300 enzymes such as carbonic anhydrases and matrix metalloproteinases, as well as thousands of zinc-finger transcription factors that regulate gene expression. In pharmacology, this target is primarily associated with the mechanism of zinc pyrithione, a zinc ionophore used to treat seborrheic dermatitis and dandruff. Zinc pyrithione increases intracellular zinc concentrations to levels that non-selectively inhibit these vital proteins, disrupting cellular homeostasis and inducing cytotoxicity in fungi and bacteria. While highly effective for topical applications, the broad nature of this target presents significant challenges for systemic therapeutic development due to potential off-target effects on essential host physiological processes. Recent research has also highlighted the zinc-binding cysteine proteome as a potential vulnerability in cancer cells, where zinc-induced inhibition of enzymes like glutathione reductase can lead to lethal oxidative stress.

Other names

Zinc-binding proteinsZinc-dependent enzymesZinc-binding proteomeZinc-dependent metabolic pathways

Zinc ionophore activity leading to increased intracellular zinc levels and subsequent non-specific inhibition of zinc-dependent enzymes and metabolic pathways.