ART1 Knockout PaTu 8988t Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human pancreatic ductal adenocarcinoma cell line PaTu 8988t, in which the ART1 gene has been disrupted. This heterogeneous pool of gene-edited cells provides a loss-of-function model to study ART1-mediated mono-ADP-ribosylation without clonal selection bias. As a ready-to-use knockout resource, these cells enable detailed investigation of ADP-ribosylation-dependent biological processes in a clinically relevant pancreatic cancer background.
The parental PaTu 8988t cell line was originally isolated from a lymph node metastasis of a human pancreatic adenocarcinoma and harbors an activating KRAS mutation, characteristics that make it a highly metastatic, epithelial model of pancreatic ductal adenocarcinoma. Widely employed in cancer research, PaTu 8988t recapitulates key features of tumor progression, invasion, and signaling. Coupling this aggressive background with ART1 knockout yields a powerful system to dissect the role of ART1-catalyzed ADP-ribosylation in pancreatic malignancy.
ART1 encodes a glycosylphosphatidylinositol-anchored mono-ADP-ribosyltransferase that transfers ADP-ribose from NAD+ onto arginine residues of target proteins, including integrin ??1 and RhoA. ART1 expression is induced by IFN-?? and TNF-?? through STAT1 and NF-??B, and its enzymatic activity is modulated by cAMP. Once activated, ART1-mediated ADP-ribosylation stimulates FAK phosphorylation by Src and organizes the actin cytoskeleton via paxillin, talin, Rac1, and Cdc42, leading to downstream activation of PI3K/Akt and ERK pathways. ART1 also promotes expression of matrix metalloproteinases, facilitating epithelial-mesenchymal transition. The modification is dynamically reversed by ARH1. Knockout of ART1 eliminates this ADP-ribosylation, thus disrupting integrin-mediated signaling and associated cellular behaviors.
In the KRAS-mutant, metastatic PaTu 8988t context, loss of ART1 is anticipated to impair cell adhesion, reduce FAK and Src activity, and suppress migratory and invasive capacity. This knockout model permits direct interrogation of how ART1-driven ADP-ribosylation sustains the aggressive phenotype of pancreatic adenocarcinoma, including EMT and matrix degradation. It uniquely links ART1-catalyzed post-translational modification to the molecular mechanisms underlying tumor metastasis.
These polyclonal knockout cells are suited for a range of applications, including functional genomics studies of ART1 in pancreatic cancer, ADP-ribosylation and signal transduction assays by western blotting, Transwell migration and invasion assays, cell adhesion and proliferation analyses, and immunofluorescence localization of FAK and integrin ??1. They also support drug screening for ART1 inhibitors, transcriptomic profiling via RNA-seq, and investigation of NF-??B and STAT1 crosstalk in cytokine-mediated regulation. For further technical details, please contact Ascent Research.
