Words similar to enhancer
Example sentences for: enhancer
How can you use “enhancer” in a sentence? Here are some example sentences to help you improve your vocabulary:
BAL = bronchoalveolar lavage; BSA = bovine serum albumin; C/EBP = CCAAT/enhancer binding protein; COX-2 = cyclooxygenase-2; CREB = cAMP response element binding protein; FBS = fetal bovine serum; fMLP = n-formyl-methionyl-leucyl-phenylalanine; HBSS = Hank's balanced salt solution; ICAM-1 = intercellular adhesion molecule-1; LPS = lipoplysaccharide; MAP = mitogen activated protein; MIP-2 = macrophage inflammatory protein-2; NF-κB = nuclear factor-kappa B; PBS = phosphate-buffered saline; PI3K = phosphatidyl inositol 3 kinase; PKB = protein kinase B; RT-PCR = Reverse transcription-polymerase chain reaction; TBE = Tris borate EDTA; TNF-α = tumor necrosis factor alpha
This stimulation is independent of enhancer orientation and, within a limited range, independent of distance to the origin.
This observation suggests that specific nucleotide sequences within the enhancer are required for its function.
Because deletions of stretches of ~50 bp within the enhancer had no effects on transformation frequency and only mild effects on colony size (Fig.
Among genes that are stimulated by FSH/cAMP during the period of maturation of Sertoli cells (15 to 20 days of age in rats), are several subunits of cAMP-dependent protein kinase (PKA), the serine/threonine kinase mainly responsible for the downstream effects of FSH [ 15 ] . Expression of the RIIβ regulatory subunit of cAMP-dependent protein kinase is highly induced (50-fold) at the mRNA level in primary cultures of rat Sertoli cells as a late response to cAMP peaking at 12 hours [ 16 ] . We have demonstrated that expression of CAAT/Enhancer binding protein β (C/EBPβ) is induced by cAMP with rapid kinetics in Sertoli cells, and that C/EBPβ is responsible for induction of late response genes like the RIIβ-gene [ 17 ] . The RIIβ promoter contains a conserved E-box/HLH element in the basal promoter localized at -280 to -275 relative to the functional ATG [ 18 ] . This element is shown to be important for cAMP-responsiveness in granulosa cells, and it has been shown to bind both USF and Myc in CHO and NB2a cells [ 18 19 ] . In this work, we show that USF isoforms may regulate cAMP responsiveness of the RIIβ promoter by modulating the effect of C/EBP, and that the formation of USF isoforms may be regulated by cAMP in Sertoli cells.
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