The DNAJB14 Knockout HeLa Polyclonal Cells represent a CRISPR/Cas9-mediated loss-of-function model targeting the DNAJB14 gene. This product consists of a polyclonal knockout cell population derived from HeLa cells, providing a heterogeneous pool of gene-disrupted cells. The CRISPR/Cas9 system has been employed to ablate DNAJB14 expression, enabling researchers to investigate the functional consequences of DNAJB14 depletion in a human epithelial cancer background. As a polyclonal population, this model captures diverse editing events across the cell pool, facilitating robust functional studies without clonal isolation artifacts.
The host cell line, HeLa, is an immortalized epithelial cell line originally derived from a cervical adenocarcinoma of Henrietta Lacks. HeLa cells are among the most widely utilized human cell lines in biomedical research, serving as a foundational model for cancer biology, cell signaling, and drug discovery. Their robust growth characteristics and extensive characterization make them ideal for genetic manipulation. In the context of this knockout product, the HeLa background provides a relevant cancer model to study DNAJB14-mediated processes in oncogenic stress and protein homeostasis.
DNAJB14 encodes a J-domain co-chaperone that interacts with Hsp70 family members, principally HSPA1A and HSPA8. Mechanistically, DNAJB14 recruits Hsp70 to unfolded client proteins, stimulating ATP hydrolysis to promote folding or degradation. This activity is central to the Hsp70 chaperone cycle and proteostasis. DNAJB14 is transcriptionally regulated by HSF1, ATF4, and XBP1, linking it to the unfolded protein response. The co-chaperone functions within a network that includes BAG family co-chaperones (e.g., BAG1) and nucleotide exchange factors like HSPBP1, which modulate Hsp70 activity. Disruption of DNAJB14 thus perturbs this chaperone machinery.
In the HeLa cancer cell background, DNAJB14 knockout provides a powerful tool to dissect how co-chaperone dysfunction impacts cancer cell survival, particularly under stress conditions that activate the unfolded protein response. HeLa cells are known to exhibit elevated basal stress due to their transformed state, making them sensitive to perturbations in chaperone networks. Ablation of DNAJB14 may impair Hsp70-mediated refolding of oncogenic clients or stress-denatured proteins, potentially altering tumorigenic signaling and therapeutic response. This model allows investigation of DNAJB14’s role in balancing protein folding and degradation, a critical node in cancer cell adaptation.
The DNAJB14 Knockout HeLa Polyclonal Cells are suited for chaperone biology, proteostasis research, and cancer drug screening. Western blotting and RT-qPCR confirm knockout and downstream Hsp70 levels. Co-immunoprecipitation validates disrupted interactions, while ATPase assays measure Hsp70 activity. ER stress marker analysis and cell viability assays enable stress response and proliferation studies. Their value is in screening protein folding modulators. For further experimental details, contact Ascent Research.
