Transcriptional and Posttranscriptional Regulation of CSF-1 Gene Expression in Human Monocytes
Overview
Authors
Affiliations
Regulation of CSF-1 gene expression was investigated in human monocytes. CSF-1 transcripts were at low or undetectable levels in resting monocytes. However, in monocytes treated with 12-O-tetradecanoylphorbol-13-acetate (TPA), CSF-1 mRNA was increased by 3 h and reached maximal levels by 12 h of drug exposure. When nuclear run-on assays were used, CSF-1 gene transcription was also at low or undetectable levels in resting monocytes but was activated after TPA exposure. TPA-treated monocytes exposed to actinomycin D further demonstrated that the half-life of the CSF-1 mRNA is 0.9 h. The results also demonstrated that the protein synthesis inhibitor, cycloheximide (CHX), increases CSF-1 mRNA levels in both resting and TPA-treated monocytes. These effects of CHX occurred in the absence of detectable increases in CSF-1 gene transcription. Moreover, treatment of monocytes with CHX and actinomycin D demonstrated that inhibition of protein synthesis is associated with stabilization of the CSF-1 transcript. Taken together, these findings indicated that CSF-1 gene expression is controlled at both transcriptional and posttranscriptional levels in human monocytes.
Regulation and function of macrophage colony-stimulating factor (CSF1) in the chicken immune system.
Wu Z, Harne R, Chintoan-Uta C, Hu T, Wallace R, MacCallum A Dev Comp Immunol. 2019; 105:103586.
PMID: 31870792 PMC: 6996135. DOI: 10.1016/j.dci.2019.103586.
Role of CSF-1 in progression of epithelial ovarian cancer.
Chambers S Future Oncol. 2009; 5(9):1429-40.
PMID: 19903070 PMC: 2830097. DOI: 10.2217/fon.09.103.
Asakura E, Tojo N, Tanabe T Cell Prolif. 1999; 32(4):185-94.
PMID: 10614708 PMC: 6726332. DOI: 10.1046/j.1365-2184.1999.3240185.x.
Satriano J, Shuldiner M, Hora K, Xing Y, Shan Z, Schlondorff D J Clin Invest. 1993; 92(3):1564-71.
PMID: 8397228 PMC: 288305. DOI: 10.1172/JCI116737.
Satriano J, Schlondorff D J Clin Invest. 1994; 94(4):1629-36.
PMID: 7929839 PMC: 295323. DOI: 10.1172/JCI117505.