The ATXN2L Knockout HeLa Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population for targeted disruption of the ATXN2L gene in the HeLa human cell line. This product provides a loss-of-function model and does not constitute a monoclonal, clonally derived cell line. By ablating ATXN2L function across a heterogeneous population, researchers can interrogate gene dosage effects and population-level phenotypes in a cellular background widely used for mechanistic and screening studies. The cells are supplied as a live, unpurified pool of edited and unedited cells, reflecting the complexity inherent to polyclonal CRISPR/Cas9-mediated gene disruption, and are suitable for functional assays where population-averaged readouts are informative.
HeLa cells are an adherent, epithelial cell line originally derived from a human cervical adenocarcinoma, and are notable for their HPV18-positive status and aberrant karyotype. Their robust proliferative capacity, ease of culture, and extensive historical characterization make them a standard host for generating gene-edited models. In this context, the ATXN2L knockout HeLa polyclonal cells retain the core features of the parental line, including active mTOR signaling and stress response pathways, thereby enabling investigation of ATXN2L-dependent processes in a transformed, metabolically active background.
ATXN2L (Ataxin-2-like protein) is an RNA-binding protein that promotes stress granule assembly and regulates mRNA translation by interacting with key components of the translational machinery and stress response network. It associates with poly(A)-binding proteins PABPC1 and PABPN1, and with core stress granule factors G3BP1 and TIA1. ATXN2L functions downstream of mTORC1 and is regulated by nutrient status; amino acid deprivation and cellular stress signals converge on mTORC1, which through effectors such as RAPTOR and 4E-BP1 controls translation initiation. ATXN2L also links to eIF4E and impacts translation of 5’TOP mRNAs, while stress-activated eIF2?? pathways intersect with stress granule formation. These interactions position ATXN2L at the interface of metabolic sensing and post-transcriptional control.
In the HeLa cervical adenocarcinoma model, ATXN2L knockout disrupts stress granule dynamics and translational control mechanisms that are often co-opted in cancer to survive oncogenic and microenvironmental stress. Loss of ATXN2L may alter the cellular response to oxidative stress, heat shock, and nutrient deprivation, directly affecting pathways relevant to tumor cell adaptation and neurodegenerative disease processes such as spinocerebellar ataxia. The model therefore enables dissection of ATXN2L??s role in balancing growth and stress responses under conditions that mimic the tumor milieu, offering a versatile platform for target identification and validation.
This cell model supports a range of experimental approaches including western blotting for stress granule markers (G3BP1, TIA1), immunofluorescence-based localization of stress granules, polysome profiling to assess translation, RNA immunoprecipitation to capture ATXN2L-interacting transcripts, cell viability assays under oxidative or heat stress, and phospho-specific analysis of mTOR pathway components (S6K1, 4E-BP1). It is suitable for studies of stress granule biology, RNA metabolism, mTOR signaling, and translational regulation, with translational relevance to neurodegeneration and oncology. For further information, please contact Ascent Research.
