The HEBP2 Knockout A-549 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population of human A-549 lung adenocarcinoma epithelial cells, designed for loss-of-function analysis of the heme-binding protein 2 (HEBP2) gene. This product offers a genetically heterogeneous cell pool with targeted HEBP2 disruptions, enabling bulk-population studies of heme metabolism, apoptosis regulation, and oxidative stress signaling without clonal selection bias.
The parental A-549 cell line, derived from a 58-year-old male lung adenocarcinoma, exhibits adherent epithelial morphology and serves as an established model of alveolar type II pulmonary epithelium. Widely used in non-small cell lung cancer research, A-549 endogenously expresses critical apoptosis regulators, making it ideal for investigating HEBP2-mediated mitochondrial integrity and drug resistance mechanisms.
HEBP2 is an intracellular heme-binding protein that sequesters heme and suppresses intrinsic apoptosis by inhibiting cytochrome c release from mitochondria. It interacts with heme, BAX, BCL2, and mitochondrial permeability transition pore components to preserve outer membrane potential. Transcriptional regulation by GATA1 and activation by heme and oxidative stress stimuli place HEBP2 at the nexus of heme metabolism and redox homeostasis. Upon HEBP2 knockout, cytochrome c redistribution promotes APAF1, Caspase-9, and Caspase-3 activation, while antioxidant gene expression is reduced, amplifying ROS-driven apoptosis.
In the A-549 adenocarcinoma setting, HEBP2 disruption models the interplay between heme-dependent survival signals and lung cancer apoptosis evasion. This polyclonal knockout enables exploration of chemoresistance mechanisms, as HEBP2 loss may sensitize malignant cells to oxidative stress-induced death. The model supports drug screening for BCL2 family inhibitors or mitochondrial permeability transition modulators.
Experimental applications include cytochrome c release assays, caspase-3/9 activity measurements, and Annexin V/PI flow cytometry for apoptosis quantification. Complementary techniques such as MitoTracker staining, heme quantification, and Western blotting for HEBP2, BAX, BCL2, and cleaved caspases allow detailed pathway dissection. RT-qPCR monitors antioxidant gene changes, while cell viability under oxidative stress (e.g., H2O2 treatment) informs functional rescue studies. This product facilitates research in lung adenocarcinoma pathobiology, erythropoietic disorders, and oxidative stress-related diseases. For further details, contact Ascent Research.
