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This research found that the transfer reaction catalyzed by human plasma and guinea pig hair follicle transglutaminases aligns with a ping-pong mechanism involving peptide-bound glutamine.

This study found that hair follicle-specific keratins can form different structural assemblies depending on ionic conditions, with hair cortex keratins requiring physiological salt conditions to form intermediate filaments.

This study found that STRIP1 and the STRIPAK complex play a key role in regulating F-actin and cell-cell junctions, which are essential for maintaining the epidermal barrier in mouse skin.

This study found that treating tobacco roots with specific peptides like Gly, GlyGly, and GlyAsp significantly increased root hair development and influenced gene expression, potentially through an epigenetic mechanism.

This study found that mouse and human protransglutaminase 3 enzymes require calcium-regulated activation for their role in later stages of cell envelope formation in the epidermis and hair follicle.

This study found that the peptide TSN6 increased epidermal thickness and promoted hair follicle formation in dermal–epidermal composites grafted onto nude mice, with TSN6-treated composites showing more hair follicles and retained grafts compared to control groups.

Specific cross-linkages help make hair proteins stable and strong.

Keratin proteins in epithelial cells are dynamic and crucial for cell processes and disease understanding.

In this research, most cases of mammary and extramammary Paget disease were reported to express PRAME, expanding the understanding of its presence in cutaneous epithelial tumors, though its diagnostic utility is limited by overlap with other conditions.

This study demonstrates that a bioinspired peptide, PepACS, can efficiently and safely perm hair by interacting with keratin's sulfhydryl group without compromising tensile strength, and it shows potential for hair repair and dyeing applications in the hair care industry.

This study found that overexpression of parathyroid hormone-related protein in mice resulted in 30–40% shorter hair due to premature transition into the catagen phase of the hair cycle.

This study demonstrated that dermal papilla cells are molecularly distinct from fibroblasts and identified many novel molecules, including a new member of the CTGF protein family.

This study found that marine-derived collagen peptides slightly promoted hair matrix proliferation and prolonged hair growth phase in human hair follicles ex vivo, suggesting potential benefits for hair loss treatment.

In this study, researchers found that thrombin may influence cyclic hair growth through its receptor PAR-1, although it does not seem to stimulate dermal papilla cell proliferation physiologically.

This review discusses the diverse roles of the TRPS1 gene in regulating cartilage, kidney, and hair follicle development, highlighting its functions and interactions, but provides no new experimental results.

In this study, the researchers report that a modified epimorphin-derived peptide shows potential for hair follicle regeneration, especially when used with 1% minoxidil in mice.

This study identified intramembrane proteolysis as a key feature of Astrotactin2 maturation, providing insights into its role in planar cell polarity hair patterning.

This study found that different polypeptides, including KP peptide and hydrolyzed keratin, can improve the mechanical properties of damaged hair under varying conditions, with reduction environments and cysteine content influencing their effectiveness.

This study characterized the crystal structures and supramolecular architectures of new salts made from 2,4-diaminopyrimidine and different dicarboxylic acids, revealing subtle differences in crystal packing and hydrogen-bonding patterns, particularly influenced by sulfur atom interactions, through Hirshfeld analysis and enrichment ratios.

Thymic peptides can either promote or inhibit human hair growth.

In this study, oral collagen peptides increased certain gene expressions related to epidermis development and the hair cycle in hairless mice skin, suggesting potential links to hair health.

In a study on female SD rats, the authors found that RADA16-1 short-peptide nano-fiber gel scaffolds improved burn wound healing, hair follicle growth, hair growth length, and expression of bFGF and EGF compared to a NaCl control.

This review outlines the various processes activated by the peptide GHK-Cu in tissue remodeling and reports improvements in skin and wound healing but notes a need for further study to fully understand these mechanisms.

This study reported variable expression levels of TRα and CRABPII genes during the prenatal development of cashmere goats, contributing to an understanding of hair follicle formation in these animals.

In this case report, researchers described a female child with total alopecia due to a mutation in the SNRPE gene, emphasizing the need for updated genetic testing as knowledge advances to avoid diagnostic delays in hereditary nonsyndromic hypotrichosis.

This study demonstrates that the trichohyalin gene is located at chromosomal region 1q21, where several other genes related to epidermal differentiation also map.

This study found that TPA treatment induced expression of keratins K6 and K16 in mouse epidermis, with K6 expressed across all cell layers and K16 only in post-mitotic cells.

This study found that enzymatic conversion of Arg-51 in S100A3 protein to citrulline promotes homotetramer assembly, potentially increasing Ca²⁺ binding required for hair cuticular barrier formation.