The DTWD2 Knockout NCI-H1299 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal population of NCI-H1299 cells with targeted disruption of the DTWD2 gene. This knockout model provides a genetically defined loss-of-function system for investigating DTWD2 in a human non-small cell lung cancer (NSCLC) background. The polyclonal composition represents an edited cell pool without single-cell clonal selection, offering a heterogeneous population that retains population-level diversity for studying gene function. This product enables researchers to probe DTWD2-dependent pathways without the constraints of a monoclonal cell line.
The NCI-H1299 host cell line is a lung adenocarcinoma epithelial cell line originally derived from a lymph node metastasis of a 43-year-old male with non-small cell lung carcinoma. It is widely used as an in vitro model of metastatic NSCLC, characterized by robust migratory and invasive capacity. Notably, NCI-H1299 cells harbor a homozygous deletion of the TP53 gene, resulting in abrogated p53 function, which compromises DNA damage checkpoint control and enhances tumorigenic potential. This genetic background makes the line particularly valuable for studying DNA repair, apoptosis, and drug sensitivity.
The DTWD2 gene encodes a protein with a DTW domain, a domain of unknown structural function that is speculated to participate in nucleic acid binding or metabolism. The regulatory network, upstream activators, downstream targets, and interacting partners of DTWD2 remain uncharacterized. According to mechanistic predictions, knockout of DTWD2 is expected to abolish any DTWD2-dependent nucleic acid binding or metabolic actions, possibly affecting DNA repair or RNA processing pathways. However, given the limited functional annotation, the exact cellular consequences require rigorous experimental assessment, and no specific signaling connection has been validated.
Introducing a DTWD2 knockout into the NCI-H1299 background creates a powerful tool for dissecting DTWD2’s role in lung adenocarcinoma. Because DTWD2 may be involved in nucleic acid metabolism, its loss could impact DNA damage response, genomic integrity, and tumorigenic behavior. This model allows for the investigation of how DTWD2 deficiency influences the metastatic properties of NSCLC cells, including proliferation, clonogenicity, and migration. The polyclonal nature of the knockout population enables researchers to capture functional heterogeneity that might be missed in clonal lines, offering a more physiologically relevant readout.
The DTWD2 Knockout NCI-H1299 Polyclonal Cells are suitable for a broad range of experiments, including knockout validation by western blot and RT-qPCR, phenotypic characterization through cell proliferation and colony formation assays, migration and invasion studies, and genome-wide expression profiling via RNA-seq. These cells also facilitate DNA damage induction and repair kinetics analyses and drug sensitivity screenings to identify therapeutic vulnerabilities linked to DTWD2 loss. This model provides a versatile platform for elucidating DTWD2’s contribution to lung cancer biology and therapeutic responsiveness. For further information, please contact Ascent Research.
