The ECEL1 Knockout HAP1 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population designed to disrupt endogenous ECEL1 gene function. This heterogeneous cell pool provides a robust loss-of-function model for investigating the biological roles of ECEL1 in a near-haploid genetic background. The polyclonal format ensures a diverse array of knockout alleles, minimizing clonal artifacts and enabling population-level analyses of ECEL1-dependent phenotypes. Researchers can use these cells to dissect ECEL1-mediated pathways in diverse experimental contexts, from biochemical assays to high-throughput screening applications.
The HAP1 host cell line is a near-haploid human cell line derived from the KBM-7 chronic myeloid leukemia (CML) line. HAP1 cells exhibit fibroblastoid morphology, adherent growth, and male origin, maintaining a stable near-haploid karyotype that simplifies gene editing and genetic analysis. These cells are widely used as a knockout model owing to the presence of a single allele for most genes, which eliminates the need for biallelic targeting and facilitates the generation of complete loss-of-function models. The hematopoietic derivation of HAP1 cells, combined with their robust growth characteristics, makes them particularly suitable for studies of signaling pathways and drug sensitivity screens.
ECEL1 (endothelin-converting enzyme-like 1) encodes a metalloendopeptidase that proteolytically activates big endothelin-1 to endothelin-1 (EDN1). Active EDN1 binds to EDNRA and EDNRB receptors, initiating Gq/phospholipase C-mediated calcium signaling and MAPK/ERK cascades. In neurons, ECEL1 processes neuropeptides and is critical for neuromuscular junction integrity and axonal transport. ECEL1 interacts with neprilysin (MME) and ECE1, and is regulated by neuronal transcription factors (NeuroD, Brn2) and neurotrophic factors. Loss of ECEL1 disrupts endothelin signaling and neuropeptide processing, linking it to neuromuscular disorders.
In the HAP1 near-haploid system, ECEL1 knockout provides a simplified genetic background to study endothelin processing and signaling. The loss of ECEL1 in this fibroblastoid line enables unambiguous phenotypic analysis and is directly relevant to distal arthrogryposis type 5D, as it mimics the cellular defects from impaired EDN1 production. This model supports investigation of pathogenic mechanisms and screening for compounds that restore signaling.
Typical applications include western blotting and ELISA-based quantification of ECEL1 and EDN1 levels, RT-qPCR profiling of neuropeptide transcripts, calcium flux assays to measure receptor activation, and immunofluorescence staining of synaptic markers in co-culture systems. Migration and invasion assays can explore the role of endothelin signaling in cell motility. These cells are also suitable for drug screening campaigns targeting arthrogryposis-related pathways. For further technical details and custom inquiries, please contact Ascent Research.
