The EDF1 Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the extensively characterized HEK293T cell line, designed for loss-of-function studies of the endothelial differentiation-related factor 1 (EDF1) gene. This product provides a genetically heterogeneous knockout model generated through Cas9-mediated gene disruption, enabling robust assessment of EDF1-dependent processes without clonal selection artefacts.
The parental HEK293T cell line is a human embryonic kidney epithelial line transformed with the SV40 large T antigen and adenoviral E1A sequences, conferring high transfectability and efficient protein expression. These attributes make it an ideal platform for transient and stable expression studies, viral vector production, and the dissection of transcriptional regulation networks. The epithelial origin offers a simplified cellular context for examining the core transcriptional functions of EDF1, independent of endothelial-specific differentiation signals.
EDF1 encodes a transcriptional coactivator that bridges sequence-specific transcription factors, including ATF1 and c-Jun, to the basal transcription machinery through interactions with the TATA-binding protein (TBP). It is activated downstream of Notch receptors (NOTCH1, DLL4), VEGF, and cAMP signaling, and modulates the expression of endothelial adhesion molecules such as ICAM1, VCAM1, VEGFR2, and PECAM1. EDF1 also interacts with calmodulin and PEX5, linking its transcriptional regulatory role to calcium signaling and peroxisomal biology. Collectively, these interactions position EDF1 as a node integrating extracellular cues with transcriptional programs governing endothelial differentiation and cell adhesion.
In the HEK293T background, EDF1 knockout disrupts its coactivator function without the confounding influence of endogenous endothelial differentiation pathways. This model enables precise dissection of EDF1-dependent transcriptional regulation, including its role in CREB/ATF1-mediated gene expression and basal transcription machinery assembly. The epithelial nature of the host cell further permits the study of EDF1??s impact on cell adhesion and migration in a non-endothelial lineage, providing comparative insights relevant to vascular biology and tumor microenvironment research.
The EDF1 KO HEK293T polyclonal cells support a wide array of experimental approaches, including transcriptional reporter assays with ATF1/CRE-driven luciferase systems, quantitative analysis of adhesion molecule expression via Western blotting and RT-qPCR, and immunofluorescence localization of EDF1. Functional assays such as adhesion, transwell migration, and endothelial tube formation can be adapted to examine EDF1??s influence on cell behavior. Transcriptome-wide studies using RNA-seq further reveal global regulatory networks. For further technical details and customization options, please contact Ascent Research.
