The Phospho-Histone H3 (Ser10) antibody is a critical tool for studying mitotic progression and chromatin dynamics. Histone H3 is a core component of nucleosomes, and its phosphorylation at serine 10 (S10) is tightly associated with chromosome condensation during mitosis. This post-translational modification peaks during the G2/M phase of the cell cycle, serving as a hallmark of mitotic cells. The antibody specifically detects this phosphorylation event, enabling researchers to visualize and quantify cells actively undergoing division.
Widely used in immunofluorescence, flow cytometry, and Western blotting, this antibody helps identify mitotic cells in tissues, cultured cells, or experimental models. Its applications extend to cancer research, where it aids in assessing tumor proliferation rates, as highly aggressive cancers often exhibit elevated phospho-Histone H3 (S10) levels. It also plays a role in developmental biology and drug discovery, particularly in screening compounds that modulate cell cycle progression.
The antibody's specificity is validated using knockout controls or phosphatase-treated samples to confirm signal loss. Proper sample preparation, including formaldehyde fixation and avoidance of harsh detergents, is crucial to preserve the phosphorylation epitope. By providing a direct readout of mitotic activity, the Phospho-Histone H3 (S10) antibody remains indispensable for understanding cell division mechanisms, disease pathology, and therapeutic interventions targeting proliferation.