The DYNC2LI1 Knockout Huh-7 Polyclonal Cells are a heterogeneous population of Huh-7 cells engineered with CRISPR/Cas9 to disrupt the DYNC2LI1 gene, creating a loss-of-function model for the cytoplasmic dynein 2 light intermediate chain. This polyclonal knockout product avoids clonal selection artifacts while enabling the study of ciliary transport and hedgehog signaling in a liver cancer context.
The Huh-7 cell line, derived from a well-differentiated human hepatocellular carcinoma, exhibits epithelial morphology and retains hepatic functions, making it a widely used liver cancer model. Although not typically characterized as ciliated, Huh-7 cells can form primary cilia under specific conditions, providing a relevant system to investigate ciliary roles in hepatocarcinogenesis.
DYNC2LI1 encodes a light intermediate chain of the cytoplasmic dynein-2 motor complex, which drives retrograde intraflagellar transport (IFT) in primary cilia. It forms complexes with the dynein heavy chain DYNC2H1 and other subunits such as WDR34 and WDR60, and interacts with IFT complex proteins including IFT88 and IFT140. This motor is essential for returning ciliary membrane proteins and signaling molecules to the cell body, a process critical for proper hedgehog pathway transduction. Disruption of DYNC2LI1 impairs retrograde IFT, leading to defective activation of GLI transcription factors (GLI1, GLI2) and aberrant hedgehog signaling, which is associated with ciliopathies such as short-rib thoracic dysplasia and Jeune syndrome.
In the Huh-7 hepatocellular carcinoma background, this knockout model permits investigation of ciliary-dependent hedgehog signaling in liver cancer cells. The loss of DYNC2LI1 provides a tool to dissect how retrograde IFT influences proliferation, differentiation, and drug responses, and to explore potential tumor-suppressive functions of cilia in hepatic tumors.
Applications include immunofluorescence staining for cilia markers (ARL13B, acetylated tubulin) to assess cilia formation, hedgehog pathway luciferase reporter assays, and RT-qPCR for GLI target genes. Western blotting and co-immunoprecipitation can confirm target disruption and examine dynein-2 complex assembly. Additional experiments such as cell cycle analysis and drug testing can evaluate functional outcomes. These DYNC2LI1 knockout polyclonal cells serve as a valuable resource for ciliopathy research, hedgehog signaling studies, cilia biology, and cancer ciliary function. For further details, contact Ascent Research.
