The HSPA1L Knockout Jurkat Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population with disruption of the HSPA1L gene, encoding an HSP70 family chaperone. This heterogeneous mixture of Jurkat T lymphocyte cells harbors diverse loss-of-function mutations, enabling functional studies without clonal selection bias. The polyclonal format reflects tumor cell heterogeneity and is ideal for investigating HSPA1L-dependent processes such as protein quality control and stress-induced cytoprotection.
The Jurkat cell line is an immortalized human T lymphocyte line derived from a patient with acute T cell leukemia. Widely used for studying T cell receptor signaling, activation, and apoptosis, these cells express CD3 and CD4 and respond to stimuli like phorbol esters. Their malignant origin makes them valuable for leukemogenesis research, and their ease of genetic manipulation facilitates functional genomics studies.
HSPA1L encodes an HSP70 family molecular chaperone essential for protein homeostasis. It binds misfolded proteins to prevent aggregation and promote folding, regulated by HSF1 transcription factor upon heat stress, oxidative stress, or inflammatory cytokines such as TNF-?? and IL-6. HSPA1L collaborates with HSP40 co-chaperones (DNAJ family) and nucleotide exchange factors like BAG family proteins and HOP/STIP1. This chaperone machinery is central to the heat shock and unfolded protein responses, influencing apoptosis by modulating aggregation-prone proteins and apoptosis regulators. Disruption of HSPA1L impairs cytoprotection, leading to protein misfolding and increased stress-induced apoptosis.
In Jurkat T cells, HSPA1L knockout offers a model to study chaperone-mediated stress responses in lymphocyte biology. T cells encounter stresses during activation and function, requiring robust protein quality control. Loss of HSPA1L may dysregulate T cell receptor signaling and increase proteotoxic stress vulnerability, illuminating the role of heat shock proteins in immune regulation and leukemogenesis. This model enables exploration of protein aggregation, apoptosis, and immune signaling interactions, with potential for identifying therapeutic vulnerabilities and testing HSP70 inhibitors.
Researchers can use these polyclonal knockout cells to investigate HSPA1L function in T cell stress responses, analyze chaperone interactions with HSP40 or BAG proteins via co-immunoprecipitation, and assess protein aggregation by immunofluorescence. Apoptosis can be quantified under stress conditions using annexin V/PI flow cytometry, while proteomics can identify client proteins dependent on HSPA1L. Western blotting and RT-qPCR are recommended for knockout confirmation. The model also supports drug screening for HSP70 inhibitors. For further information, please contact Ascent Research.
