Journal: iScience
Article Title: Functional variant at 19q13.3 confers nonsyndromic cleft palate susceptibility by regulating HIF3A
doi: 10.1016/j.isci.2025.111829
Figure Lengend Snippet: The variant rs3826795 at 19q13.3 regulates transcriptional activity of HIF3A by modulating the binding affinity of VEZF1 to the promoter Allele-specific constructs containing the putative promoter sequence flanking rs3826795 were cloned into the pGL3-basic luciferase reporter vector and transfected into the (A) HEK-293, (B) HEPM, and (C) HOK. The results of luciferase activity were normalized to those of pGL3 basic ( n = 6). (D) EMSA with biotin-labelled oligonucleotides containing the rs3826795[A] or rs3826795[G] allele and nuclear extracts from HEPM and HOK. Lanes 1 showed the mobility of the labeled oligonucleotides without nuclear extracts; lanes 2 and 4 showed the mobility of the labeled oligonucleotides with nuclear extracts in the absence of the competitor oligonucleotide and lanes 3 and 5 showed the mobility of the labeled oligonucleotides with nuclear extracts in the presence of unlabeled competitors. The arrow indicates a DNA–protein complex. (E) In silico predicted preferential binding of VEZF1 to the non-risk allele C of rs3826795. (F) The transcription factor VEZF1 was analyzed for correlation with Hif3a in mouse embryo craniofacial tissues, lip and palate tissues, palate shelves (from left to right). (G) The ChIP enrichment of VEZF1 as determined by ChIP-qPCR. IgG was used as a negative control. (H) Supershift assays using the VEZF1 antibody in HEPM and HOK. IgG was used as a negative control. The data are presented as the means ± SD, and the p values were calculated using Student’s t test. ∗∗ indicates p < 0.01, ∗∗∗ indicates p < 0.001, and ∗∗∗∗ indicates p < 0.0001. EMSA, electrophoretic mobility shift assay; ChIP, chromatin immunoprecipitation. SD, standard deviation.
Article Snippet: Lentivirus Hif3a overexpression , GENECHEM , N/A.
Techniques: Variant Assay, Activity Assay, Binding Assay, Construct, Sequencing, Clone Assay, Luciferase, Plasmid Preparation, Transfection, Labeling, In Silico, ChIP-qPCR, Negative Control, Electrophoretic Mobility Shift Assay, Chromatin Immunoprecipitation, Standard Deviation