Preferred Label : Keratinocyte Differentiation Pathway;
NCIt related terms : Keratinocyte Differentiation;
Alternative definition : BIOCARTA: The epidermis, which provides a protective barrier that undergoes a constant
renewal, is a multi-layered tissue with the proliferating cells located in the basal
layer. As cells leave the basal layer they undergo significant differentiation and
biochemical and morphological remodeling. The final differentiation results in the
formation of corneocytes. In vitro keratinocytes mimic this process. Several genes
mark keratinocyte specific differentiation. Among the most frequently tracked markers
are transglutaminase, cystatin and involucrin. Keratinocyte differentiation studies
have identified and provided significant detail regarding the involvement of three
of the 4 major MAP kinase pathways from several diverse stimuli such as EGF, FAS,
TNF and calcium influx. The keratinocyte differentiation cascades also provide for
detailed study of the functions of individual PKC isoforms and it is interesting to
note the contrasting functions of the PKC isoforms in this process. In recent studies
it has been determined that the cPKC (conventional/classical Protein Kinase C) isoforms,
which are calcium-, phospholipid-, and diacylglycerol-dependent are inhibitory where
as the nPKC (novel Protein Kinase C) isoforms which are calcium independent are stimulatory
for keratinocyte differentiation markers. (This definition may be outdated - see the
DesignNote.);
NCIt note : The BIOCARTA Definition (ALT_DEFINITION) for this pathway concept was provided by
BioCarta. This property was not created by, nor is it maintained by the NCI Thesaurus
staff. Additionally, BioCarta is no longer updating its pathway data; thus, the BIOCARTA
Definition might be outdated or inaccurate. Please see the Terms and Conditions for
Use at http://www.biocarta.com/.;
Biocarta ID : h_keratinocytePathway;
Origin ID : C39135;
UMLS CUI : C1521888;
Automatic exact mappings (from CISMeF team)
Semantic type(s)
has_gene_product_element
pathway_has_gene_element