Journal: The FASEB Journal
Article Title: Klotho regulation by albuminuria is dependent on ATF3 and endoplasmic reticulum stress
doi: 10.1096/fj.201900893r
Figure Lengend Snippet: FIGURE 6 ATF4 and ATF3 regulate Klotho expression. Relative mRNA and protein levels of Klotho, ATF4 and ATF3 as measured by qPCR and western blot, respectively, in HK-2 cells transiently overexpressing the human ATF4 transcription factor (two experiments), (A) or the human ATF3 transcription factor (three experiments), (B). Relative luminescence in the FNL-7 cell line expressing the human Klotho promoter driving firefly luciferase expression in control and cells overexpressing human ATF4, ATF3, or both factors (N = 6), (C). The HK-2 cells were also transduced with shRNA lentiviral vectors targeting ATF4 or ATF3 and the relative mRNA levels of Klotho as well as the protein levels were assessed by qPCR (N = 8/8/4), (D) or western blot analysis (N = 3), (E), respectively, in the presence or absence of albumin in comparison to the scrambled shRNA vector. The silencing efficiency was verified by western blot analysis (N = 4/3), (F). The mRNA levels are normalized to RPLP0 gene expression and the protein levels to β-actin or Ponceau staining. Mean ± SD, unpaired two-tailed t test or multiple t test without correction or one-way ANOVA *P < .05
Article Snippet: To isolate the lentiviral particles, the cell medium was collected 48 hours after and centrifuged at 1500 rpm for 7 minutes and passed through a Name Host and isotype Manufacturer Cat. No. Dilution Primary antibody Klotho Rat IgG2a TransGenic KO603 1:50 ATF4 Rabbit IgG Cell signaling #11815 1:250 ATF3 Rabbit IgG Abcam ab207434 1:50 Detection system Klotho ImmPRESS HRP AntiRat IgG Vector Laboratories MP-7404-50 EnVision Flex kit DAKO K8010 ATF4, ATF3 CSA II BiotinFree Catalyzed Amplification System DAKO K149711-2 T A B L E 1 Antibodies and kits used for immunohistochemistry | 5DELITSIKOU ET aL. 0.45-μM pore size filter to remove cell debris.
Techniques: Expressing, Western Blot, Luciferase, Control, Transduction, shRNA, Comparison, Plasmid Preparation, Gene Expression, Staining, Two Tailed Test