DNPEP Knockout A-549 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed for loss-of-function studies of the DNPEP gene. Generated via CRISPR/Cas9-mediated gene disruption in A-549 cells, this product offers a heterogeneous pool of edited cells, enabling robust analysis of DNPEP-dependent phenotypes without clonal selection bias. The polyclonal format is particularly suitable for applications requiring average population-level effects, such as bulk RNA sequencing, proteomics, and high-throughput drug screening.
The A-549 host cell line is a well-characterized model of human lung adenocarcinoma, originally derived from explant culture of lung carcinomatous tissue from a 58-year-old Caucasian male. These cells exhibit typical features of type II pulmonary epithelial cells and are widely employed in cancer biology research, including investigations of tumor cell proliferation, migration, invasion, and drug response. A-549 cells provide a relevant epithelial context for examining the roles of metabolic enzymes and signaling pathways implicated in lung carcinogenesis.
DNPEP encodes an aspartyl aminopeptidase that catalyzes the removal of N-terminal acidic amino acids from peptide substrates. Key substrates include angiotensin II, cholecystokinin-8, and endothelin-1, linking DNPEP activity to the renin-angiotensin system and peptide hormone regulation. The enzyme is functionally associated with components such as angiotensinogen (AGT), renin (REN), and angiotensin-converting enzyme (ACE), and its activity modulates signaling downstream of angiotensin receptors AGTR1 and AGTR2. DNPEP is regulated by cellular stress and cytokine signaling, and it contributes to processes such as peptide catabolism, apoptosis modulation, and control of vasoactive peptide bioavailability.
In A-549 lung adenocarcinoma cells, DNPEP knockout may disrupt the metabolism of angiotensin peptides and other substrates, potentially altering autocrine or paracrine signaling loops that influence tumor cell behavior. Given the emerging role of the renin-angiotensin system in cancer progression, this knockout model enables dissection of DNPEP??s contribution to lung adenocarcinoma phenotypes, including proliferation, migration, and response to microenvironmental stress. The polyclonal population approach facilitates detection of consistent phenotypic changes while minimizing artifacts from individual clonal variation.
Researchers can employ these knockout cells in a broad range of functional assays, including aspartyl aminopeptidase activity assays, RT-qPCR, western blotting, proliferation and migration/invasion assays, and angiotensin II ELISA to quantify peptide processing. This model supports investigations into DNPEP??s role in hypertension-related signaling, glioblastoma, and lung adenocarcinoma, as well as drug sensitivity screens targeting the renin-angiotensin pathway. For further details on product validation and use, please contact Ascent Research.
