Human THBD Stable Cell Line - CHO-K1

The Human THBD Stable Cell Line - CHO-K1 is a recombinant cell line engineered to stably express the human thrombomodulin (THBD) gene. THBD, also known as CD141 or BDCA-3, encodes an endothelial-specific type I transmembrane receptor that plays a central role in the anticoagulant pathway. The protein binds directly to thrombin, forming a complex that activates protein C and subsequently degrades coagulation factors Va and VIIIa, thereby downregulating thrombin generation. The gene is located on chromosome 20p11.21 and produces a 575-amino acid precursor with a C-type lectin-like domain, multiple EGF-like domains, and a transmembrane region. CHO-K1 cells, a well-characterized subclone derived from the Chinese hamster ovary cell line, were selected as the host due to their robust growth characteristics, high transfection efficiency, and ability to produce functional membrane proteins with proper post-translational modifications. The stable expression of human THBD in this system ensures consistent and reproducible levels of the target protein on the cell surface, making it a reliable tool for downstream research applications.

This stable cell line serves as a valuable platform for a variety of experimental applications. It can be used to study the mechanism of thrombin-thrombomodulin interactions and downstream protein C activation in a controlled in vitro setting. The line is particularly useful for evaluating the functional activity of therapeutic antibodies, small molecules, or other biologics that target THBD or modulate its activity. Researchers can employ it in binding assays, internalization studies, and cell-based screening campaigns aimed at identifying novel modulators of the anticoagulant pathway. Beyond drug discovery, the cell line supports investigations into the physiological roles of thrombomodulin, including its involvement in inflammatory responses, complement regulation, and endothelial barrier function. It also serves as a positive control for gene expression studies, antibody validation, and assay development. With its stable expression and well-defined background, the Human THBD Stable Cell Line - CHO-K1 provides a consistent and reproducible system that reduces experimental variability and accelerates research progress in thrombosis, hemostasis, and vascular biology.