The IGHMBP2 Knockout HAP1 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population targeting IGHMBP2 in the HAP1 cell line. This loss-of-function model enables the study of IGHMBP2, an ATP-dependent RNA helicase involved in RNA metabolism and translation regulation. The polyclonal knockout pool, generated via CRISPR/Cas9-mediated gene disruption, contains a mixture of cells with diverse loss-of-function alleles, facilitating applications without clonal isolation. Researchers can investigate IGHMBP2 roles in stress granule biology and motor neuron disease pathways.
HAP1 cells are a near-haploid human cell line derived from the KBM-7 chronic myeloid leukemia (CML) line. Their haploid genome makes them highly suitable for CRISPR-based genetic screens, as a single mutation can abolish gene function. The well-characterized genetic background and stable proteome render HAP1 an ideal host for knockout models. The IGHMBP2 Knockout HAP1 Polyclonal Cells leverage this advantage to enable reliable study of IGHMBP2 loss-of-function in leukemia-derived cells that also express stress-response pathways.
IGHMBP2 is an ATP-dependent RNA helicase that localizes to stress granules and regulates mRNA translation and stability. It interacts with UPF1, G3BP1, and ribosomal proteins, and is activated by cellular stress stimuli to mediate stress granule assembly. IGHMBP2 functions within the translation initiation complex and ribosome, with downstream actions on mRNA translation and tRNA binding. Loss of IGHMBP2 disrupts translation and leads to motor neuron degeneration; mutations are associated with DSMA1, SMARD1, and CMT2S.
Within the HAP1 near-haploid background, these polyclonal IGHMBP2 knockout cells offer a robust system to dissect the molecular effects of IGHMBP2 deficiency. The mixed population avoids clonal artifacts while maintaining a consistent knockout phenotype suitable for high-throughput assays. This model is valuable for studying stress granule dynamics and translation efficiency, given HAP1 cells’ intact stress responses. The polyclonal format also facilitates drug sensitivity and genetic modifier screens, while the haploid genome simplifies target validation.
Typical research applications include the study of motor neuron disease pathology, stress granule assembly, and mRNA translation regulation. Compatible assays include western blotting for protein-level confirmation, RT-qPCR and RNA-seq for transcript analysis, immunofluorescence for subcellular localization, flow cytometry for phenotypic profiling, co-immunoprecipitation for interaction studies, and translation efficiency assays. Drug screening efforts targeting SMARD1 can also be performed. For additional information, please contact Ascent Research.
