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UVB and gamma-radiation induce the expression of mRNAs encoding the ribosomal subunit L13A in rat keratinocytes.

Authors: Shahmolky, N  Lefebvre, DL  Poon, R  Bai, Y  Sharma, M  Rosen, CF 
Citation: Shahmolky N, etal., Photochem Photobiol. 1999 Sep;70(3):341-7.
Pubmed: (View Article at PubMed) PMID:10483362

Ultraviolet B radiation produces an array of cellular perturbations in the skin. We isolated a keratinocyte cDNA encoding the rat 60S ribosomal subunit protein L13a following differential cDNA library screening with UVB-enriched probes. In contrast to the reported structure of liver L13a, the keratinocyte L13a cDNA contains a longer 3'-untranslated region. Northern blot analysis detected two L13a mRNA transcripts, approximately 800 bp and approximately 1.2 kb, in keratinocytes and a variety of rat tissues. Both L13a mRNA transcripts were induced by UVB irradiation, forskolin and gamma-irradiation. In contrast, no induction of L13a mRNA transcript levels was observed following exposure of keratinocytes to 12-O-tetradecanoylphorbol-13-acetate, serum and the DNA damage-inducing agents methyl methanesulfonate or 4-nitroquinoline-N-oxide. These observations suggest that increased expression of ribosomal subunit genes may be a molecular component of the keratinocyte response to UVB in particular and not part of a nonspecific response to DNA damage.

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CRRD Object Information
CRRD ID: 11036101
Created: 2016-02-17
Species: All species
Last Modified: 2016-02-17
Status: ACTIVE



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