The HCFC1R1 Knockout A-549 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal population of A-549 human lung adenocarcinoma epithelial cells in which the HCFC1R1 gene has been subjected to targeted disruption. This knockout model enables loss-of-function analysis of HCFC1R1, a transcriptional regulator that modulates the activity of host cell factor C1 (HCF-1). The polyclonal format provides a heterogeneous population of edited cells, suitable for population-level studies without clonal selection pressures, reflecting the inherent genetic diversity of the knockout pool.
The A-549 host cell line is derived from a human lung adenocarcinoma and is widely employed as an in vitro model of type II alveolar epithelium. These cells express wild-type p53 and carry an activating KRAS G12S mutation, characteristics that make them particularly relevant for lung cancer research, including investigations into oncogenic signaling, tumor suppressor pathways, and drug metabolism. The epithelial-like morphology and adherent growth of A-549 cells facilitate a broad range of standard biochemical and cellular assays.
HCFC1R1 functions as a key regulator of HCF-1, an essential transcriptional co-regulator that governs the expression of genes linked to cell cycle progression and viral infection. Mechanistically, HCFC1R1 interacts with HCF-1 and associated proteins such as SIN3A and GABPA, modulating HCF-1??s ability to activate E2F1-dependent transcription and herpes simplex virus immediate-early gene programs. Under cellular stress or viral challenge, HCFC1R1 influences downstream targets including E2F1, Cyclin D1, and viral factors like VP16. Disruption of HCFC1R1 is therefore expected to impair HCF-1-mediated transcriptional control, potentially altering the expression of cell cycle regulators and viral susceptibility genes.
In the A-549 adenocarcinoma background, loss of HCFC1R1 may unmask dependencies on HCF-1 signaling that are pertinent to lung tumor biology. Given the presence of a mutant KRAS allele, this knockout model provides a unique tool to dissect how HCFC1R1 intersects with oncogenic cascades to regulate proliferation and survival. Moreover, by perturbing the transcriptional response to viral infection, these cells can be used to explore how lung epithelial cells respond to herpes simplex virus in the context of cancer-associated mutations.
Researchers can employ this knockout model in diverse experimental settings, including western blotting and RT-qPCR to monitor HCF-1 and E2F1 expression, cell proliferation and viral replication assays to quantify growth kinetics and infection rates, and chromatin immunoprecipitation (ChIP-qPCR) to assess HCF-1 genomic occupancy. Additional applications encompass RNA sequencing, flow cytometry for cell cycle analysis, and drug response profiling, enabling comprehensive investigation of HCFC1R1 function in lung adenocarcinoma, cell cycle regulation, and viral pathogenesis. For further technical details and ordering, please contact Ascent Research.
