The HSPA7 Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the HEK293T human embryonic kidney cell line. This loss-of-function model enables systematic investigation of HSPA7 biology, providing a stable genetic background for studying proteotoxic stress, molecular chaperone networks, and cellular adaptation mechanisms.
Originally derived from human embryonic kidney cells, the HEK293T host cell line is a widely utilized epithelial model expressing the SV40 large T-antigen, which supports high-level episomal replication and efficient recombinant protein expression. Its robust growth characteristics and high transfection efficiency make it an ideal platform for generating knockout populations to interrogate stress-responsive pathways and protein quality control within a mammalian context.
HSPA7 belongs to the heat shock protein 70 (Hsp70) family and is transcriptionally upregulated by HSF1 under stress conditions such as hyperthermia, oxidative stress, hypoxia, and heavy metal exposure. As a molecular chaperone, HSPA7 facilitates protein folding, prevents aggregation of misfolded polypeptides, and maintains proteostasis. Mechanistically, HSPA7 interacts with co-chaperones including DNAJB1, BAG3, and STUB1/CHIP, and directly binds to the pro-apoptotic factor BAX, inhibiting caspase-3 activation and thereby promoting cell survival. HSPA7 also participates in chaperone-mediated autophagy through complex formation with BAG3, linking it to protein quality control and clearance pathways.
In the HEK293T background, knockout of HSPA7 allows precise dissection of its role in the cellular stress response. Given the capacity of HEK293T cells to sustain high-level recombinant protein expression, this model is particularly valuable for examining how loss of HSPA7 affects handling of misfolded proteins, ER stress signaling, and apoptosis regulation. Researchers can utilize this system to study cytoprotection in conditions mimicking ischemia-reperfusion injury, neurodegenerative proteotoxicity, or cancer-associated proteostatic imbalance.
Key research applications include interrogation of Hsp70 family functions, evaluation of cellular responses to acute and chronic stress, investigation of protein misfolding diseases, and screening for small-molecule modulators of chaperone activity. Compatible assays encompass Western blotting, RT-qPCR, co-immunoprecipitation, protein aggregation analyses, flow cytometry?Cbased apoptosis monitoring, and chaperone activity assays. For further information, please contact Ascent Research.
