Destabilization of tumor necrosis factor-alpha mRNA by 5-alpha dihydrotestosterone in Jurkat cells.
The effect of a male steroid hormone, 5DHT, on the expression of TNF-alpha was examined using a human leukemia T cell line, Jurkat. Cells were treated with 5DHT in the presence or absence of PHA, and RNA was isolated followed by a reverse transcriptase - mediated PCR (RT-PCR) to measure the steady state levels of TNF-alpha mRNA. The treatment of cells with 5DHT resulted in a 50% of decrease in the level of TNF-alpha mRNA compared to that in untreated conditions (basal level). A similar level of reduction of the message by 5DHT was also observed in PHA-stimulated cells. The reduction of the steady state levels of TNF-alpha mRNA in Jurkat cells was a result of destabilization of the gene as demonstrated by actinomycin D treatment; a half-life of TNF-alpha message in 5DHT treated cells and non-treated cells was 1 hr and 2.5 hr, respectively, whereas that in 5DHT/ PHA and PHA-treated cells was 3hr and 6hr, respectively.[1]References
- Destabilization of tumor necrosis factor-alpha mRNA by 5-alpha dihydrotestosterone in Jurkat cells. Takei, S., Redford, A., Katayama, S., Toyoda, H. Life Sci. (2000) [Pubmed]
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