The Human Keratins: Biology And Pathology

The document discussed the diverse and significant roles of human keratins, which are intermediate filament proteins crucial for the mechanical stability and integrity of epithelial cells and tissues. It highlighted that humans have 54 functional keratin genes, with about half being specific to hair follicles. Keratins not only provide structural support but also participate in regulatory functions such as stress protection, wound healing, and apoptosis. The article summarized the distribution and functional significance of keratins in relation to transgenic mouse models and human hereditary keratin diseases. Additionally, certain keratins, like K5, K7, K8/K18, K19, and K20, were noted for their importance in the immunohistochemical diagnosis of carcinomas, particularly in identifying unclear metastases and aiding in tumor classification and subtyping. The document suggested that future research could expand the clinical applications of keratins.