The ABCB10 Knockout PaTu 8988t Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population with disrupted ABCB10 in the human PaTu 8988t pancreatic adenocarcinoma line. This polyclonal format yields a genetically heterogeneous pool with targeted gene disruptions, supporting robust loss-of-function studies while minimizing cloning biases. ABCB10 encodes a mitochondrial inner membrane ABC transporter involved in heme export and redox homeostasis. This model enables dissection of ABCB10-dependent pathways in a metastatic cancer context.
The parental PaTu 8988t line, derived from a liver metastasis of pancreatic ductal adenocarcinoma, carries a KRAS G12V mutation and recapitulates aggressive metastatic features including invasion and metabolic rewiring. Its liver-metastatic origin makes it ideal for probing molecular mechanisms of organ-specific dissemination. Combined with ABCB10 knockout, these cells allow investigation of how mitochondrial heme trafficking influences pancreatic cancer progression.
ABCB10 functions as an inner mitochondrial membrane exporter that translocates heme biosynthetic intermediates from the matrix to the intermembrane space, enabling heme incorporation into cytosolic and organellar hemoproteins. Its expression is transcriptionally activated by GATA-1, STAT5, and HIF-1??, and is induced by heme itself. ABCB10 interacts with ferrochelatase (FECH) and mitoferrin, and functionally cooperates with ABCB7 and ABCB8. Downstream, ABCB10 supports expression of ALAS2 and FECH, maintains mitochondrial respiratory chain function, and upregulates antioxidant enzymes such as SOD2 and catalase. By limiting mitochondrial ROS accumulation, it protects cells from oxidative stress, a process integrated with NRF2/KEAP1 signaling. This network positions ABCB10 as a critical node in mitochondrial redox homeostasis and heme metabolism.
In PaTu 8988t cells, ABCB10 knockout is anticipated to disturb heme trafficking, elevate mitochondrial oxidative stress, and impair respiratory function, thereby sensitizing these KRAS G12V-mutant tumor cells to metabolic stress and apoptosis. Since ABCB10 is frequently overexpressed in pancreatic cancers, this model enables dissection of its role in redox adaptation and chemo-resistance. The polyclonal knockout system thus offers a robust platform to investigate how mitochondrial heme export contributes to pancreatic adenocarcinoma survival and metastatic fitness.
Typical applications include Western blotting and RT-qPCR for knockout validation, heme quantification to assess export efficiency, and Seahorse metabolic flux analysis to probe bioenergetics. ROS detection, Annexin V apoptosis assays, colony formation, and migration/invasion studies further characterize ABCB10??s impact on stress tolerance and invasive behavior. These polyclonal cells are suitable for CRISPR screening, drug target validation, and mechanistic studies of mitochondrial transporters in cancer. For details, contact Ascent Research.
