The ATAD1 Knockout HAP1 Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population in which the ATAD1 gene is disrupted. This product provides a loss-of-function model for investigating mitochondrial quality control mechanisms. The polyclonal format retains population-level heterogeneity, enabling robust functional analyses without the selection bias of clonal isolates.
The host cell line, HAP1, is a near-haploid human hematopoietic cell line derived from chronic myeloid leukemia. These cells exhibit an adherent, fibroblast-like morphology and originate from a male donor. The near-haploid karyotype simplifies genetic manipulation and allele-specific studies, making HAP1 a versatile platform for gene-editing experiments. Their stability in culture and expression of relevant mitochondrial machinery support studies on mitochondrial dynamics and disease.
ATAD1 (Thorase) encodes a mitochondrial AAA+ ATPase that localizes to the outer mitochondrial membrane and disassembles protein complexes, including DRP1 oligomers, to suppress excessive mitochondrial fission. ATAD1 is activated downstream of PINK1 and Parkin, and it interacts with DRP1, MFN1, MFN2, and ubiquitin to regulate mitophagy and mitochondrial fusion/fission dynamics. Disruption of ATAD1 leads to accumulation of DRP1, resulting in fragmented mitochondria and impaired mitochondrial quality control.
In the HAP1 background, ATAD1 knockout models the mitochondrial dysfunction observed in neurodegenerative diseases such as Parkinson??s, as well as in mitochondrial disorders and certain cancers. This cell model is particularly valuable for dissecting the PINK1/Parkin mitophagy axis and the downstream effects on mitochondrial morphology. The near-haploid nature facilitates parallel genetic screens to identify modulators of ATAD1-related pathways.
Research applications include studying mitochondrial quality control, investigating mechanisms of neurodegeneration, screening small molecules for mitochondrial diseases, and examining mitophagy regulation. Representative assays utilize western blotting to monitor DRP1, MFN1, and MFN2 levels, immunofluorescence for mitochondrial morphology, mitophagy flux measurements, ATPase activity assays, cell viability under mitochondrial stress, and co-immunoprecipitation of ATAD1 with DRP1. For further technical information, please contact Ascent Research.
