The GPR75 knockout KYSE-150 polyclonal cell product is a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt expression of the human GPR75 gene in the KYSE-150 esophageal squamous cell carcinoma cell line. This polyclonal knockout pool offers a heterogeneous loss-of-function model suitable for studying the functional consequences of GPR75 gene disruption in a cancer context. The knockout was generated using CRISPR/Cas9-mediated gene disruption, providing a versatile tool for investigating the signaling roles of this orphan G protein-coupled receptor.
KYSE-150 is a well-characterized human esophageal squamous cell carcinoma cell line derived from a poorly differentiated esophageal squamous cell carcinoma. These cells exhibit typical epithelial morphology and have been extensively used as an in vitro model for esophageal cancer biology, including studies of proliferation, migration, and response to therapeutic agents. The KYSE-150 line is particularly valuable for dissecting signaling pathways that drive tumorigenesis in the esophageal epithelium.
GPR75 encodes an orphan G protein-coupled receptor that, despite lacking identified endogenous ligands, is implicated in key signal transduction cascades. It couples primarily to G??s and G??i proteins, thereby modulating adenylyl cyclase activity and downstream cAMP accumulation. The receptor also engages ??-arrestin-dependent pathways that intersect with the MAPK/ERK and PI3K/AKT cascades. Downstream effectors regulated by GPR75 include cAMP, PKA, ERK1/2, and AKT, with CREB acting as a transcription factor activated by PKA and ERK signaling. This molecular network positions GPR75 as a potential regulator of cell proliferation, survival, and metabolic signaling.
In the KYSE-150 esophageal cancer background, loss of GPR75 function disrupts both cAMP-dependent and -independent signaling routes, potentially impairing the proliferative and survival capacity of these tumor cells. Attenuation of ERK1/2 and AKT phosphorylation upon GPR75 knockout is predicted to reduce oncogenic signaling, making this polyclonal knockout model a valuable system for assessing the contribution of orphan GPCR activity to esophageal squamous cell carcinoma progression. Moreover, given the association of GPR75 variants with metabolic syndrome and obesity, this model may also be relevant for exploring potential crosstalk between metabolic and oncogenic pathways.
Researchers can employ this GPR75 knockout KYSE-150 polyclonal cell population in a wide array of experimental applications, including esophageal cancer research, GPCR functional characterization, and drug target validation. Typical assays include cell viability and colony formation assays to assess proliferative changes, migration assays to evaluate metastatic potential, western blotting for phosphorylated ERK1/2 and AKT to monitor signaling activity, and cAMP measurements or qPCR for downstream transcriptional targets. This product is a ready-to-use tool for investigating the role of orphan GPCRs in cancer cell biology. For further inquiries, please contact Ascent Research.
