The ECEL1 Knockout Raji Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Raji B lymphocyte cell line, featuring targeted disruption of the ECEL1 gene. This loss-of-function model provides a versatile tool for studying ECEL1-dependent neuropeptide processing and signaling in a hematopoietic background. The polyclonal nature of the knockout population ensures a heterogeneous mixture of edited cells, reflecting the complexity of the CRISPR/Cas9-mediated gene disruption without selection for a single clonal genotype.
The Raji cell line is a well-characterized Epstein-Barr virus (EBV)-positive Burkitt’s lymphoma B lymphocyte line commonly employed in immunological research. As a model of B lymphocyte biology, Raji cells exhibit key features of antigen presentation, immunoglobulin expression, and responsiveness to various stimuli, making them suitable for studying immune signaling and lymphocyte function. Their robust proliferation and ease of genetic manipulation further enhance their utility for gene-editing applications.
ECEL1 encodes a zinc-dependent metalloprotease that functions primarily as a neuropeptide-inactivating enzyme. It cleaves and inactivates potent signaling peptides including substance P, bradykinin, and neurotensin. These neuropeptides transmit signals through cognate G protein-coupled receptors (GPCRs) such as NK1R, BDKRB1, BDKRB2, and NTSR1, leading to activation of intracellular cascades like MAPK/ERK and calcium mobilization. ECEL1 expression is regulated by proinflammatory cytokines (e.g., TNF-??, IL-1??), neurotrophic factors (e.g., NGF), and neuronal transcription factors (e.g., NEUROD1, ASCL1). By degrading these ligands, ECEL1 serves as a modulator of the amplitude and duration of neuropeptide-mediated signaling.
In the context of Raji B cells, ECEL1 knockout allows exploration of a non-neuronal role for this protease. While ECEL1 is traditionally studied in neuronal development and pain modulation, its potential expression and activity in immune cells could influence local neuropeptide signaling, affecting processes such as cytokine production, cell migration, or apoptosis. Genetic disruption of ECEL1 may therefore alter the sensitivity of Raji cells to neuropeptide stimulation, providing a platform to dissect neuro-immune crosstalk and the contribution of ECEL1 to B lymphocyte physiology.
This knockout product is ideally suited for a wide range of functional assays, including Western blotting, RT-qPCR, immunofluorescence, and flow cytometry to confirm target disruption and assess downstream signaling alterations. Researchers can employ neuropeptide processing assays, GPCR reporter assays, calcium imaging, co-immunoprecipitation, and phospho-signaling analysis to investigate molecular mechanisms. Potential applications encompass drug screening for ECEL1 modulators, studies of congenital contracture syndrome pathobiology, and evaluation of neuropeptide-mediated effects on immune cell function. For additional details or to request a quote, please contact Ascent Research.
