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Keratin gene mutations in disorders of human skin and its appendagesChamcheu, Jean Christopher ...Keratins, the major structural protein of all epithelia, are a diverse group of cytoskeletal scaffolding proteins that form intermediate filament networks,providing structural support to ... keratinocytes that maintain the integrity of the skin. Expression of keratin genes is usually regulated by differentiation of the epidermal cells within the stratifying squamous epithelium. Amongst the 54 known functional keratin genes in humans, about 21different genes including hair and hair follicle-specific keratins have beenassociated with diverse hereditary disorders. The exact phenotype of each disease mostly reflects the spatial level of expression and types of the mutated keratin genes, the positions of the mutations as well as their consequences at sub-cellular levels. The identification of specific mutations in keratin disorders is the basis of our understanding that lead to reclassification, improved diagnosis with prognostic implications, prenatal testing and genetic counseling in severe cutaneous keratin genodermatoses. A disturbance in cutaneous keratins as a result of mutation(s) in the gene(s) that encode keratin intermediate filaments (KIF) causes keratinocytes and cutaneous tissue fragility, accounting for a large number of genetic disordersin human skin and its appendages. These diseases are characterized bya loss of structural integrity in keratinocytes expressing mutated keratins in vivo, often manifested as keratinocytes fragility (cytolysis), intra-epidermal blistering, hyperkeratosis, and keratin filament aggregation in severely affected tissues. Examples include epidermolysis bullosa simplex (EBS), keratinopathic ichthyosis (KPI), pachyonychia congenital (PC), monilethrix, steatocystoma multiplex and ichthyosis bullosa of Siemens (IBS). These keratins also have been identified to have roles in cell growth, apoptosis, tissue polarity, wound healing and tissue remodeling.Vir: Archives of biochemistry and biophysics. - ISSN 0003-9861 (Vol. 508, issue 2, 2011, str. 123-137)Vrsta gradiva - članek, sestavni delLeto - 2011Jezik - angleškiCOBISS.SI-ID - 27780057
Avtor
Chamcheu, Jean Christopher |
Siddiqui, Imtiaz A. |
Syeed, Deeba N. |
Adhami, Vaqar M. |
Liović, Mirjana |
Mukhtar, Hasan
Teme
Skin Diseases |
Genetics |
Keratin |
Genetics |
Epidermis |
Intermediate Filament Proteins |
Keratinocytes |
Mutation |
Epidermolysis Bullosa |
Epidermolysis Bullosa Simplex |
Hair Diseases |
Nail Diseases |
Ichthyosis |
Keratinociti |
Keratin |
Epidermis |
Kožne bolezni |
Srednje vlakno beljakovine |
Epidermoliza bulozna, simpleksna |
Lasje, bolezni |
Nohti, bolezni |
Ihtioza |
Epidermoliza bulozna |
Mutacija
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Chamcheu, Jean Christopher | ![]() |
Siddiqui, Imtiaz A. | ![]() |
Syeed, Deeba N. | ![]() |
Adhami, Vaqar M. | ![]() |
Liović, Mirjana | 14305 |
Mukhtar, Hasan | ![]() |
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