The ICA1L Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population targeting the human ICA1L gene. This loss-of-function model enables investigation of islet cell autoantigen 1-like protein functions in membrane trafficking and vesicle dynamics. The product consists of a heterogeneous pool of genome-edited HEK293T cells, facilitating studies of ICA1L-dependent processes without clonal selection.
HEK293T cells are human embryonic kidney epithelial cells that stably express the SV40 large T antigen, conferring high transfection efficiency and robust protein production. Their rapid growth and straightforward genetic manipulation make them a preferred host for mechanistic cell biology studies. Although not of neuronal or pancreatic origin, these cells retain the essential machinery for clathrin-mediated endocytosis, providing a simplified system to examine conserved trafficking pathways.
ICA1L is a BAR domain-containing protein that senses and induces membrane curvature during clathrin-mediated endocytosis. It directly interacts with clathrin and the AP2 adaptor complex to orchestrate endocytic pit formation and cargo internalization. ICA1L also associates with synaptic vesicle proteins and SNARE complex components such as synapsin and synaptobrevin, contributing to vesicle recycling. Its activity is regulated by glucose, calcium, and cAMP/PKA signaling, and it plays a role in insulin granule trafficking and glucose-stimulated insulin secretion.
Within the HEK293T context, ICA1L knockout decouples its conserved endocytic functions from specialized secretory environments, allowing researchers to study its core biochemical activities. This model is particularly valuable for type 1 diabetes research due to ICA1L’s homology to the autoantigen ICA1 and its potential involvement in autoimmune targeting. Reconstitution experiments in these cells enable dissection of ICA1L’s contributions to insulin granule dynamics and clathrin-dependent internalization, offering a controlled platform for investigating interacting partners such as dynamin and EPS15.
Common applications include Western blotting and RT-qPCR for knockout validation, immunofluorescence for protein localization, and transferrin uptake assays to quantify endocytosis. For diabetes-focused studies, co-immunoprecipitation and insulin secretion ELISA can be performed in engineered HEK293T cells to evaluate ICA1L interactions with the AP2 complex and its effects on insulin secretion. The model is also suitable for glucose-stimulated insulin secretion (GSIS) assays and drug screening targeting type 1 diabetes and neurodevelopmental disorders. For further information, please contact Ascent Research.
