Keratohyalin, Trichohyalin, and Keratohyalin-Trichohyalin Hybrid Granules: An Overview

The document provided an overview of filaggrin and trichohyalin, two major proteins associated with keratin filaments in the skin, which initially accumulate in keratohyalin or trichohyalin granules. These granules are key markers of differentiation in the epidermis and hair follicles. The study highlighted the modification and release of granule contents into mature cells, where they help aggregate keratin filament bundles. It also discussed recent findings on the unique biological functions of these proteins during keratinocyte differentiation and introduced the discovery of keratohyalin-trichohyalin hybrid granules in dorsal tongue epithelia.