Skin Keratins.

Area of Science:

• Biochemistry
• Cell Biology
• Genetics

Background:

• Keratins are type I and type II intermediate filament proteins found in epithelial cells.
• Encoded by 54 conserved genes, their expression is tightly regulated by tissue type, differentiation, and cellular context.
• Keratins perform critical mechanical and non-mechanical functions, including maintaining cellular integrity and regulating cell growth.

Purpose of the Study:

• To review the diverse functions of keratins in epithelial homeostasis and stress responses.
• To highlight the role of keratin alterations in human diseases, including rare genetic disorders and common pathologies.
• To present essential protocols and assays for studying skin keratins.

Main Methods:

• Review of existing literature on keratin biology and function.
• Analysis of genetic data linking keratin mutations to disease phenotypes.
• Description of established laboratory protocols for keratin analysis in skin samples.

Main Results:

• Keratins are vital for epithelial mechanical stability and cellular processes.
• Mutations in keratin genes lead to significant cellular fragility and tissue dysfunction.
• Keratin dysregulation is implicated as a risk factor or modifier in various acute and chronic diseases.
• Specific protocols for skin keratin analysis are detailed.

Conclusions:

• Keratins are fundamental to epithelial health, with mutations causing severe disorders.
• Understanding keratin function and regulation is key to addressing associated diseases.
• The presented protocols facilitate further research into skin keratinopathies.