Zinc sulfate heptahydrate

Zinc sulfate heptahydrate (CAS No.: 7446-20-0) is an inorganic zinc salt hydrate and a widely used trace element source in life sciences, primarily categorized as a micronutrient reagent and metal ion modulator for biomedical research and early stage drug discovery workflows. In biological systems, it functions as a dissociable donor of Zn2 plus ions that support zinc dependent proteins and enzymes and influence metal responsive cellular processes, with experimentally relevant mechanistic associations including regulation of zinc transporters, modulation of metallothionein linked metal buffering, and zinc sensitive control nodes in oxidative stress, inflammatory signaling, apoptosis, and proliferation related pathways such as MAPK, NF kappa B, and PI3K Akt contexts in model dependent settings. Because this compound is generally used as a supplementation or perturbation reagent rather than a selective ligand for a single canonical target, reported in vitro effects are typically characterized by concentration dependent phenotypic responses across the micromolar to low millimolar range, while pathway specific shifts in viability, redox balance, gene expression, and enzyme activity may appear from low micromolar levels upward depending on medium composition, baseline zinc status, exposure duration, and cell type. In research practice, zinc sulfate heptahydrate is commonly applied in mammalian and non mammalian cell culture to establish zinc repletion or zinc stress paradigms, in mechanistic studies of ion homeostasis and transcriptional regulation, and in animal model designs evaluating systemic zinc biology, whereas its utility in screening programs is often as a control or context reagent to probe zinc responsive phenotypes rather than as a direct high affinity inhibitor class molecule; the concentrations or doses used in experiments typically depend on specific experimental designs and research objectives, and studies generally require careful control of chelators, serum components, and baseline trace metal conditions to ensure interpretable results.