Journal: Acta Biochimica et Biophysica Sinica
Article Title: Cooperation between NSPc1 and DNA methylation represses HOXA11 expression and promotes apoptosis of trophoblast cells during preeclampsia
doi: 10.3724/abbs.2023012
Figure Lengend Snippet: NSPc1 inhibits HOXA11 expression by promoting the binding of DNMT3a to the HOXA11 promoter (A) Total cell lysates of trophoblast cells under hypoxia were immunoprecipitated with NSPc1 antibodies or control IgG and subjected to western blot analysis using anti-HOXA11 antibodies. (B) A Co-IP assay was performed to determine the endogenous interaction between NSPc1 and DNMT3a in trophoblast cells using antibodies against NSPc1 and DNMT3a. IgG was used as a negative control. (C) ChIP assay was used to detect DNMT3a enrichment at the HOXA11 promoter after trophoblast cells were infected with Ad-NSPc1 or sh-NSPc1 under hypoxia. The ChIP-enriched DNA fragments of the HOXA11 promoter using IgG and anti-DNMT3a antibody were amplified by PCR. Total input (5%) was used as a positive control ( n=3). (D) The mRNA and protein expression levels of HOXA11 in trophoblast cells after transfection with Ad-NSPc1 and sh-DNMT3a under hypoxia were measured by qRT-PCR and western blot analysis ( n=3), respectively. Data are shown as the mean±SD from 3 independent experiments. * P<0.05, ** P<0.01.
Article Snippet: Adenoviruses encoding NSPc1 (Ad-NSPc1), HOXA11 (Ad-HOXA11) or a negative control (Ad-GFP) were purchased from Genechem (Shanghai, China), and the short heparin RNAs of NSPc1 (sh-NSPc1-1, 2 and 3), HOXA11 (sh-HOXA11-1, 2 and 3), DNMT3a (sh-DNMT3a-1, 2 and 3) and short heparin RNA of scrambled (sh-NC) were purchased from GenePharma (Shanghai, China).
Techniques: Expressing, Binding Assay, Immunoprecipitation, Control, Western Blot, Co-Immunoprecipitation Assay, Negative Control, Infection, Amplification, Positive Control, Transfection, Quantitative RT-PCR