November 2022 in “Journal of Investigative Dermatology” Among men with androgenetic alopecia, this study found that taking 5 mg of KX-826 twice daily significantly increased hair count compared to a placebo, with the treatment being well-tolerated and no serious adverse effects reported.
12 citations
,
January 2014 in “Cell structure and function” This study suggests that specific combinations of human type I and II hair keratins, particularly K35-K85 and K36-K81, have distinct in vitro assembly properties that are significant for macrofibril formation.
45 citations
,
March 2001 in “Journal of Investigative Dermatology” This study identified a new cytokeratin, mK6irs, specifically expressed in the inner root sheath of mouse hair follicles, distinguishing it as a member of the type II cytokeratin family.
29 citations
,
February 2001 in “Proceedings of the National Academy of Sciences” This study found that the HS III element in the K14 gene's regulatory sequence promotes gene expression in inner root sheath keratinocytes, highlighting cooperative interactions in keratinocyte-specific gene regulation.
52 citations
,
April 2012 in “Journal of Investigative Dermatology” This study found that KRTAP2 proteins predominantly express in the hair shaft cortex of humans, interact with hair keratins, and play crucial roles in hair shaft keratinization.
46 citations
,
June 2013 in “Journal of structural biology” This study suggests that the mechanical robustness of hair may be enhanced by the binding interactions of keratin-associated proteins, particularly KAP8.1, with intermediate filament proteins.
26 citations
,
October 2018 in “Cancer Management and Research” This study suggests that elevated DKK1 expression, influenced by promoter methylation, is a significant prognostic biomarker for patients with head and neck squamous cell carcinoma.
4 citations
,
February 2016 in “Clinical Pharmacology & Therapeutics” Hair follicle samples effectively show how well the drug MK-0752 targets and engages with the Notch pathway.
January 2014 in “China Animal Husbandry & Veterinary Medicine” In this study, researchers observed that the KAP8-1 gene influences skin and hair follicle development and wool quality with varying expression levels in different Ovis aries crossbred varieties.
24 citations
,
February 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, researchers identified two new keratin-associated proteins, hKAP1.6 and hKAP1.7, in human hair follicles, contributing to understanding hair fiber differentiation.
9 citations
,
September 2019 in “PLoS ONE” This study demonstrated that keratin K124 is specific to equine hoof lamellar tissue and established monoclonal antibodies that can specifically recognize K124 without cross-reacting with other tissues.
26 citations
,
March 1995 in “Differentiation” This study isolated and sequenced the complete gene rKAP4L1, which encodes a cysteine-rich hair keratin-associated protein in rabbit hair follicles.
January 2000 in “Acta Academiae Medicine Militaris Tertiae” This study found that the distribution of hair keratin family proteins varies in normal scalp hair follicles, which may aid in identifying the origin of hair neoplasms.
2 citations
,
August 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” This review discusses the genetic origins of autosomal recessive woolly hair with hypotrichosis and reports no clinical results; it highlights the link to homozygous variants in the K25 keratin gene.
141 citations
,
February 1988 in “Molecular and Cellular Biology” This study found that despite strong homology between two K16 genes, only one encoded a functional protein that assembled into keratin filaments in epithelial cells, possibly due to promoter strength differences.
March 2025 in “International Journal of Molecular Sciences” This study established a Krt24-CreERT2 mouse line targeting outer bulge hair follicle stem cells, finding these cells crucial for hair follicle development and repair, particularly following ionizing radiation exposure.
January 2013 in “Heilongjiang xumu shouyi” This study successfully cloned the KAP6.1 gene from Xinjiang fine-wool sheep and found its genetic sequence has high homology with sheep and goat sequences, indicating close genetic relationships.
51 citations
,
January 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” This study identified a novel keratin-associated protein, KAP24.1, which is specifically expressed in the human scalp and located in the hair cuticle.
130 citations
,
April 2003 in “Journal of Investigative Dermatology” This study reports the cloning and expression details of two new human type II keratins, K6irs3 and K6irs4, in the hair follicle's inner root sheath, suggesting a distinct functional role related to hair structure.
13 citations
,
January 2010 in “PubMed” 37 citations
,
May 1998 in “Journal of Dermatological Science” Basal cell carcinoma shows keratin patterns similar to undifferentiated hair follicle cells.
26 citations
,
February 1998 in “DNA and Cell Biology” This research identified that the constitutive and inducible expression of the Keratin 6 gene in transgenic mice skin is controlled by multiple regulatory elements spread throughout its 5' flanking region.
November 2023 in “Advanced Science” A specific hair protein variant increases the spread of breast cancer and is linked to worse survival rates.
September 2025 in “Animals” This study identified novel genetic variations in the KRTAP22-2 gene among eight sheep breeds but found no association between these genotypes and wool fibre traits, indicating possible species-specific differences compared to goats.
53 citations
,
June 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” This article reviews extensive genetic polymorphisms in the keratin-associated proteins of human hair, indicating complexity but reporting no new clinical results and calls for further research on their potential impact on hair structure.
July 2024 in “Journal of Investigative Dermatology” This study found that systemic treatment with DS77754007, a KLK5 inhibitor, improved skin symptoms in a mouse model of Netherton Syndrome more effectively than certain antibody treatments, suggesting KLK5 inhibition as a promising therapeutic approach for this condition.
12 citations
,
March 2004 in “Journal of Investigative Dermatology”
May 2022 in “Frontiers in Cell and Developmental Biology” This study identified that in pig embryos, the miR-29a-5p/EDAR/lncRNA627.1 ceRNA complex plays a critical role in inhibiting hair placode precursor cells proliferation and regulating hair placode formation through the suppression of EDAR expression, which may provide insights into similar mechanisms affecting human hair conditions.
71 citations
,
August 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” This study revealed that human keratin-associated protein genes are expressed in specific patterns in hair fiber regions and vary in size, with some variations distinct across different populations.
February 2025 in “Archives animal breeding/Archiv für Tierzucht” This study found that certain gene polymorphisms in keratin 27 and ELOVL4 are linked to improved cashmere fineness and production traits in Liaoning cashmere goats.