The HSPB8 Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal population derived from the HeLa cell line, in which the HSPB8 gene has been disrupted to create a loss-of-function model. Supplied as a mixed population with diverse editing events, this polyclonal knockout model enables HSPB8 functional studies without clonal selection bias. CRISPR/Cas9 targeting critical exons results in ablated full-length HSPB8 protein expression.
HeLa is a human epithelioid cervical adenocarcinoma line isolated in 1951, widely used for cancer biology, signal transduction, and autophagy research due to robust growth and well-characterized signaling networks. HeLa cells endogenously express HSPB8 and associated chaperone components, offering a physiologically relevant system to study stress-induced protein quality control and cell survival.
HSPB8 is an ATP-independent chaperone upregulated by stress via HSF1 and cytokines like TNF-alpha and IL-1beta through MAPK signaling. It forms a complex with BAG3 and HSC70, recruiting autophagic receptor SQSTM1/p62 and ubiquitinated cargo. The complex links to dynein and microtubules for delivery to LC3-positive autophagosomes in the CASA pathway. HSPB8 promotes aggrephagy and proteostasis, impacting cell survival and cytoskeletal integrity, with further interactions including HSPB1 and HSPB6.
In HeLa cells, HSPB8 knockout perturbs CASA, sensitizing cells to proteotoxic stress and providing a cancer-relevant model for autophagy?Caggregation interplay. This system is valuable for studying HSPB8’s roles in oncogenic stress responses, and for modeling neurodegenerative diseases like Charcot-Marie-Tooth disease type 2L and distal hereditary motor neuropathy, where HSPB8 mutations impair autophagic clearance. The knockout also enables analysis of MAPK-mediated survival and apoptosis regulation.
Applications include Western blotting, RT-qPCR, immunofluorescence, co-immunoprecipitation, autophagy flux assays, protein aggregation analysis, cell viability, migration, and drug sensitivity screening. The polyclonal population supports pooled functional genomics and bulk biochemical studies. Typical research areas are chaperone-assisted autophagy mechanisms, protein aggregation disease modeling, cancer stress adaptation, and high-throughput screening of HSPB8?CBAG3?CHSC70 axis modulators. For further information, contact Ascent Research.
