In these assays, both wild - type Bach1 and FLAG - hBach1 - AP4 - 7 efficiently repressed basal levels
of luciferase expression.
Not exact matches
Ten nanograms
of reporter plasmid and 200 ng
of miR7
expression plasmid were cotransfected with 1 ng
of phRG - TK Renilla
luciferase internal control plasmid (Promega) into 293TN cells using Lipofectamine 2000 reagent (Invitrogen).
p21waf1 / cip1 promoter — driven
luciferase reporter (p21 - Luc; 0.05 - 0.5 μg) and increasing amount (0.1 - 2 μg)
of FLAG - DDX3
expression construct were cotransfected into various cell lines as indicated.
As shown in Fig. 2A, exogenous
expression of DDX3 in various cell lines led to a 2 - to 4-fold up - regulation
of p21waf1 / cip1 promoter — driven
luciferase activity.
To this end, increasing amounts
of expression constructs
of DDX3 / DQAD, DDX3 / AAA and wild - type DDX3 were cotransfected with p21waf1 / cip1 promoter — driven
luciferase reporter.
All three compounds were able to induce
luciferase expression, demonstrating their ability to overcome Bach1 repression
of HMOX E2 - dependent transcription (Figure 6C).
Nonetheless, CDDO - Me and HPP - 1014 still were able to activate HMOX1 E2 - dependent
luciferase expression in the presence
of mutant Bach1 proteins, indicating that the CP motifs in Bach1 are not critical for efficient derepression
of Bach1 by an electrophile (Figure 6D).
Expression of HMOX1 E2 - dependent luciferase expression was determined in HepG2 cells co-transfected with an HMOX1 E2 - dependent reporter plasmid and a plasmid expressing FLAG - tagged wildtype Bach1 (F
Expression of HMOX1 E2 - dependent
luciferase expression was determined in HepG2 cells co-transfected with an HMOX1 E2 - dependent reporter plasmid and a plasmid expressing FLAG - tagged wildtype Bach1 (F
expression was determined in HepG2 cells co-transfected with an HMOX1 E2 - dependent reporter plasmid and a plasmid expressing FLAG - tagged wildtype Bach1 (Figure 6A).
Luciferase expression was markedly lower in cells expressing Bach1, indicating effective repression
of HMOX1 E2 - dependent transcription by Bach1 (Figure 6B).
In contrast, the ability
of both CoPP and HPP - 4382 to induce HMOX1 E2 ARE - dependent
luciferase expression in the presence
of the mutant Bach1 protein was sharply inhibited.
When spleens from infected mice were examined for sustained control
of infection at later time points, however,
luciferase expression had rebounded.
Gene
expression Reporter genes, such as
luciferase or GFP, can also be assessed in microplate readers, enabling in vitro and in vivo determination
of gene
expression for studies using markers
of genetic alteration.
Cells were transfected with 320 ng pGL3
luciferase expression construct containing the 3 ′ UTR
of human APC, 40 ng pGL4.74 hRLuc / TK Renilla
luciferase vector (Promega, Fitchburg, WI), and 25 nM hsa - miR - 142 precursor or negative control precursor (Ambion).
The AG haplotype showed significantly greater
expression of luciferase than the GT haplotype.
The minor allele
of rs25532 significantly decreased
luciferase reporter gene
expression levels by 15 — 80 %, depending on 5 - HTTLPR allele background and cell type.