Words similar to down-regulate
Example sentences for: down-regulate
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Interestingly, the promoter activity of the CD87 gene was shown to decline after infection [ 32 ] , implying that post integration of HIV-1 may in fact down-regulate CD87 gene expression.
Cumulatively, however, these observations do suggest a mechanism whereby HIV-1 expression in renal epithelium may induce cyclin D 1 : activation of Src-family kinases by Nef would be expected to up-regulate cyclin D 1 gene expression and promote the synthesis and stabilization of cyclin D 1 protein via Src-Ras-MAPK and Src-PI3K-mTOR signal transduction pathways, respectively [ 32 33 34 ] . Interestingly, our unpublished in vitro observations and published data showing marked expression of basic fibroblast growth factor in the interstitium of HIVAN kidneys [ 35 ] suggest that soluble mitogens may be important cofactors with HIV-1 expression to induce cyclin D 1 . Thus, interrupting HIV-1 gene expression should down-regulate cyclin D 1 and correct the phenotypic abnormalities in infected podocytes.
First, antisense oligonucleotides were used to down-regulate endogenous PLD2 activity.
HEK-293 cells expressing the WT-δ-OR were exposed to EGF (100 ng/ml) for 24 hours in order to down-regulate and desensitize the endogenous EGFR.
Tat has been shown to down-regulate mannose receptor, EDF-1, CD3-gamma, and TCR/CD3 surface receptor [ 14 ] . Tat reduces mannose receptor levels and promoter activity in mature macrophages and dendritic cells by interfering with the host transcriptional machinery; resulting in decreased levels of surface mannose receptor needed for Ag (mannosylated albumin uptake) or pathogen capture (Pneumocystis carinii phagocytosis), and eventual delivery to MHC class II-containing intracellular compartments [ 15 ] . EDF-1, a gene down-regulated when endothelial cells are induced to differentiate in vitro , was shown to be down-regulated by Tat at the transcriptional level, resulting in the inhibition of endothelial cell growth and in the transition from a nonpolar cobblestone phenotype to a polar fibroblast-like phenotype [ 16 ] .