The ARF1 Knockout HEK293T Polyclonal Cells product is a CRISPR/Cas9-edited polyclonal population of HEK293T cells with targeted disruption of the ARF1 gene. This heterogeneous knockout pool serves as a reliable loss-of-function model for investigating ARF1-dependent cellular processes without the biases inherent to clonal selection. The polyclonal format provides a robust tool for dissecting Golgi trafficking pathways in a well-characterized cellular background.
HEK293T is a human embryonic kidney-derived cell line that stably expresses the SV40 large T antigen, enabling episomal replication of plasmids containing the SV40 origin. This feature delivers high transfectability and efficient protein expression, making it a preferred host for viral production, signaling studies, and complementation assays. Its rapid growth and genetic tractability render it an ideal platform for generating knockout models.
ARF1 is a small GTPase that orchestrates COPI vesicle biogenesis and retrograde transport from the Golgi to the endoplasmic reticulum. Its activity is tightly controlled by guanine nucleotide exchange factors GBF1, BIG1, and BIG2, which promote GTP loading, and by ARFGAP1, which triggers GTP hydrolysis. Active, membrane-bound ARF1 recruits the COPI complex through direct binding to beta-COP and engages downstream effectors such as GGA adaptors, phospholipase D, and ARFIP1/2. Beyond Golgi trafficking, ARF1 also regulates endocytosis and actin cytoskeleton dynamics.
Deletion of ARF1 in HEK293T cells allows for unambiguous examination of COPI-dependent transport and Golgi organization. The SV40 large T antigen supports plasmid-based rescue experiments with wild-type or mutant ARF1, facilitating structure-function analyses. The polyclonal knockout population reduces artifacts from clonal variation and provides a consistent platform for studying ARF1??s role in secretion, receptor recycling, and pathogen subversion of host membranes. This model is suited to explore the contribution of Golgi-derived secretion to cancer cell metastasis and invasion.
This knockout cell population is compatible with immunofluorescence to assess Golgi integrity, Western blotting for effector phosphorylation, co-immunoprecipitation of coatomer complexes, and GTPase activity assays. It can be employed in high-throughput screens for ARF1 inhibitors and live-cell imaging of trafficking, as well as host-pathogen studies where ARF1 is subverted for pathogen replication. For further details, please contact Ascent Research.
