The inducible expression of THP-1 cell interleukin-1 mRNA: effects of estrogen on differential response to phorbol ester and lipopolysaccharide. Lymphokine Cytokine Res 1994 Feb;13(1):1-7
Date
02/01/1994Pubmed ID
8186319Scopus ID
2-s2.0-0028294994 (requires institutional sign-in at Scopus site) 21 CitationsAbstract
Monokines, such as interleukin-1, have been implicated in the pathogenesis of several pathologic processes, including the initiation and progression of atherosclerosis. Since estrogen has been identified as a modulator of atherosclerosis progression, we sought to examine the effect of estrogen on the inducible expression of interleukin-1 beta (IL-1 beta) and interleukin-1 alpha (IL-1 alpha) mRNA in the monocytic cell line, THP-1. Cells were treated with 12-O-tetradecanoylphorbol-13-acetate (TPA) (50 ng/ml) for 48 or 96 h to induce differentiation. Some cells were treated with lipopolysaccharide (LPS) (10 micrograms/ml) in the last 3 h and/or 10(-9) M ethinyl estradiol (estrogen) in the last 20 h. Total cellular RNA was isolated, and cDNA was synthesized and amplified using the polymerase chain reaction (PCR) using two sets (pairs) of 32P-labeled primers, one for IL-1 beta (product size 388 bp) and the second for the internal control, beta-actin (1126 bp), or to detect another cytokine mRNA, a set of primers for IL-1 alpha (product size 420 bp) and beta-actin. The PCR products were separated on a 3.0% agarose gel and the ratio of radioactivity incorporated into cytokine PCR products and beta-actin products was determined to assess the relative changes in the relative levels of cytokine to beta-actin mRNA abundance in response to various inducers. Treatment with TPA for 48 h induced expression of IL-1 beta mRNA, an effect that was enhanced two fold by LPS.(ABSTRACT TRUNCATED AT 250 WORDS)
Author List
Shanker G, Sorci-Thomas M, Register TC, Adams MRAuthor
Mary Sorci Thomas PhD Professor in the Medicine department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
ArteriosclerosisCell Line
Ethinyl Estradiol
Gene Expression Regulation
Humans
Interleukin-1
Lipopolysaccharides
Monocytes
RNA, Messenger
Tetradecanoylphorbol Acetate