Keratins are a family of intermediate filament-forming proteins highly specific to epithelial cells. A combination of expressed keratin genes is a defining property of the epithelium belonging to a certain type, organ/tissue, cell differentiation potential, and at normal or pathological conditions. In a variety of processes such as differentiation and maturation, as well as during acute or chronic injury and malignant transformation, keratin expression undergoes switching: an initial keratin profile changes accordingly to changed cell functions and location within a tissue as well as other parameters of cellular phenotype and physiology. Tight control of keratin expression implies the presence of complex regulatory landscapes within the keratin gene loci. Here, we highlight patterns of keratin expression in different biological conditions and summarize disparate data on mechanisms controlling keratin expression at the level of genomic regulatory elements, transcription factors (TFs), and chromatin spatial structure.
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http://dx.doi.org/10.3390/ijms24065603 | DOI Listing |
J Invest Dermatol
January 2025
Mayo Clinic Arizona, Department of Dermatology, Scottsdale, AZ. Electronic address:
Cutaneous squamous cell carcinoma (cSCC) is one of the most common cancers in humans and kills as many people annually as melanoma. The understanding of the transcriptional changes with respect to high-risk clinical/histopathological features and outcome is poor. Here, we examine stage-matched, outcome-differentiated cSCC using whole exome and transcriptome sequencing.
View Article and Find Full Text PDFBiochem Pharmacol
January 2025
Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050000 Hebei, PR China. Electronic address:
Grainyhead-like protein 3 homolog (GRHL3) has been identified as a top transcription factor associated with keratinization in lung squamous cell carcinoma (LUSC). We designed this study to elucidate the function of GRHL3 in radioresistance in LUSC and the mechanism involved. Transcriptome differences between radioresistant and parental cells were analyzed to identify the hub transcription factor.
View Article and Find Full Text PDFAdv Wound Care (New Rochelle)
January 2025
Translational Medicine Center, Baotou Central Hospital (Baotou Clinical Medical College, Affiliated to Inner Mongolia Medical University), Baotou, China.
Wound healing is a dynamic process involving multiple cell types and signaling pathways. Dermal sheath cells (DSCs), residing surrounding hair follicles, play a critical role in tissue repair, yet their regulatory mechanisms remain unclear. This study used single-cell proteomics with the mouse model to explore DSC function across different healing stages.
View Article and Find Full Text PDFDrug Des Devel Ther
January 2025
Department of Dermatology, Second Xiangya Hospital, Hunan Key Laboratory of Medical Epigenomics, Clinical Medical Research Center of Major Skin Diseases and Skin Health of Hunan Province, Central South University, Changsha, Hunan, People's Republic of China.
Background: Psoriasis is an immune-related inflammatory systemic condition characterized by dysregulated keratinocyte proliferation and chronic inflammation. Tanshinone I (Tan-I) has recently been discovered to have immunomodulatory properties, but its role and mechanisms in treating psoriasis remain unclear.
Objective: To evaluate the efficacy of Tan-I in the treatment of psoriasis and to determine the mechanisms involved.
BMC Genomics
January 2025
State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, 100193, China.
Background: Sheep horns play a critical role in the survival and reproduction of sheep. Research on sheep horns not only aids in comprehending their biological roles but is also vital for developing hornless breeds. Although previous studies have suggested that KLK7 may be associated with keratin growth, there are few studies that have focused on the role of KLK7 in sheep horns.
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