Localization of transglutaminase 1 mRNA in normal and psoriatic epidermis by non-radioactive in situ hybridization.
basic_science · Level V
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Abstract
We examined the expression of the transglutaminase 1 (TGase 1) gene in frozen sections of normal and psoriatic epidermis by means of non-radioactive in situ hybridization with digoxigenin-labelled cRNA probes. TGase 1 mRNA was expressed in the granular layer of normal epidermis, regardless of ortho- or hyperkeratosis. However, in psoriatic epidermis, TGase 1 mRNA was detected in the suprabasal spinous layer, but not in the subcorneal layer. These results indicate that TGase 1 gene expression is limited to the last stage of keratinization in normal epidermis and this regulation is disturbed in psoriasis.
Medical subject headings
- Gene Expression Regulation, Enzymologic
- Psoriasis
- RNA, Messenger
- Skin
- Transglutaminases