The DYNC1LI1 Knockout HAP1 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population designed for studying cytoplasmic dynein 1 function in a near-haploid human background. This product provides a targeted gene disruption of DYNC1LI1, encoding the light intermediate chain of the dynein motor complex, enabling loss-of-function analyses in a uniform genetic context.
The HAP1 cell line is a fibroblast-like, adherent cell line derived from the KBM-7 chronic myeloid leukemia isolate. Its near-haploid karyotype facilitates efficient gene editing and simplifies genetic analyses, making it a robust platform for functional genomics, including knockout studies of genes involved in intracellular transport and cell division. These cells retain key regulatory pathways, allowing for physiologically relevant interrogation of dynein-mediated processes.
DYNC1LI1 is an integral component of the cytoplasmic dynein 1 complex, which acts as a minus-end-directed microtubule motor. The encoded light intermediate chain participates in cargo binding and regulation of motor processivity, interacting directly with dynein heavy chain (DYNC1H1) and dynein intermediate chain (DYNC1I1), as well as the dynactin complex (DCTN1). Its activity is modulated by upstream regulators such as LIS1 (PAFAH1B1), NDEL1, and CDK5, and it is essential for linking the motor to diverse cellular cargoes including Golgi, endosomes (via RAB7), lysosomes, and signaling endosomes (e.g., BDNF-TrkB). DYNC1LI1 also functions downstream of p38 MAPK and cooperates with adaptors like BICD2 and HOOK3 to mediate organelle-specific transport, mitotic spindle positioning, and autophagosome-lysosome fusion.
In HAP1 cells, disruption of DYNC1LI1 enables precise dissection of dynein’s role in mitotic spindle assembly, Golgi ribbon integrity, and vesicular trafficking without the confounding effects of a diploid genome. The haploid state amplifies phenotypic consequences of the knockout, facilitating morphological and functional readouts such as spindle misorientation, lysosome dispersion, and impaired endosomal recycling. This model is particularly valuable for investigating neurodevelopmental disease mechanisms, as dynein pathway dysfunction is linked to lissencephaly, microcephaly, and intellectual disability, as well as Parkinson’s disease-related axonal transport defects.
Researchers can employ this knockout model for a range of quantitative assays including live-cell imaging of organelle dynamics, immunofluorescence microscopy for Golgi/endosome positioning, Western blotting for dynein complex integrity, co-immunoprecipitation to map interaction networks, and flow cytometry-based cell cycle analysis. It is also suitable for phenotypic screening of small molecules that modulate dynein activity and for autophagy flux assays using LC3 turnover. For further information or to discuss experimental design, please contact Ascent Research.
