The AGTPBP1 Knockout HeLa Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population, specifically engineered for targeted disruption of the AGTPBP1 gene. This loss-of-function model provides a powerful tool for investigating the roles of AGTPBP1 in microtubule dynamics and related cellular processes. The polyclonal format includes a heterogeneous mixture of edited alleles, reflecting the natural variation of CRISPR-mediated mutations without clonal isolation, and is ideal for population-level phenotypic analyses.
The host HeLa cell line is an immortalized human cervical adenocarcinoma cell line with an epithelial-like morphology and integrated HPV-18 sequences. These cells are widely used in cancer research due to their robust growth and well-characterized genetic background. Their rapid proliferation and transformed phenotype offer a convenient system for studying cytoskeletal remodeling and mitotic events, making them a suitable context for examining AGTPBP1 function in non-neuronal cells.
AGTPBP1 encodes a tubulin tyrosine carboxypeptidase that catalyzes the detyrosination of alpha-tubulin by removing the C-terminal tyrosine residue. This post-translational modification is regulated by neuronal differentiation signals and neurotrophic factors, and directly influences microtubule stability. AGTPBP1 interacts with alpha-tubulin, microtubule-associated proteins, and tubulin tyrosine ligase (TTL). Downstream, detyrosinated alpha-tubulin recruits the kinesin-1 motor protein KIF5A, facilitating axonal transport. Within the broader signaling network, AGTPBP1 mediates signaling downstream of neuronal cues and transcriptionally regulates MAPT, linking its activity to cytoskeletal remodeling and tubulin post-translational modification pathways.
In HeLa cells, AGTPBP1 disruption alters the balance of detyrosinated tubulin, enabling researchers to dissect how microtubule stability affects cancer cell division, migration, and mitosis. Given the reliance of HeLa cells on dynamic microtubule remodeling for spindle assembly and cytokinesis, this model reveals the impact of tubulin detyrosination on proliferative capacity and motility. This approach bridges our understanding of AGTPBP1??s established neuronal roles to its emerging functions in epithelial cancer biology.
Applications include monitoring microtubule dynamics via live-cell imaging of GFP-tagged tubulin, quantifying detyrosinated tubulin by Western blotting and immunofluorescence, and assessing cell migration through wound healing assays. This knockout model also supports in vitro modeling of axonal transport deficits relevant to neurodegeneration, particularly when combined with kinesin-1 activity analyses. Additionally, it can be used to screen for compounds that modulate microtubule stability. For further information and to discuss customized experimental setups, please contact Ascent Research.
