The GNRH1 Knockout MCF-7 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population, generated from the MCF-7 breast adenocarcinoma cell line via targeted disruption of the GNRH1 gene. This loss-of-function model eliminates gonadotropin-releasing hormone (GnRH) expression, providing a heterogeneous pool of edited cells ideal for functional genomic studies. The polyclonal format avoids clonal bias and is appropriate for population-level analyses of GnRH signaling perturbation in cancer.
MCF-7 cells are an estrogen receptor-positive (ER+), progesterone receptor-positive (PR+), and HER2-negative (HER2-) human breast adenocarcinoma line, derived from a metastatic pleural effusion. They represent the luminal A molecular subtype and exhibit hormone-dependent proliferation, serving as a key model for estrogen-responsive breast cancer. This well-characterized line provides a robust background for dissecting autocrine factors like GnRH in a hormone-sensitive context.
GNRH1 encodes the decapeptide GnRH, which canonically stimulates pituitary gonadotropes via the GnRH receptor (GnRHR) to release LH and FSH. In peripheral tissues, GnRH acts as an autocrine/paracrine factor, binding GnRHR and coupling to Gq/11 to activate phospholipase C, leading to IP3-mediated calcium release and DAG-dependent PKC activation. Downstream, this triggers the MAPK/ERK cascade, influencing cell proliferation and apoptosis. Key regulators include kisspeptin, estradiol, and cortisol, while interacting factors like arrestins modulate receptor signaling.
In MCF-7 cells, GNRH1 knockout enables focused investigation of autocrine GnRH actions in breast cancer, where the peptide may modulate proliferation via MAPK/ERK. Ablation removes ligand-dependent GnRHR activation, helping distinguish local tumoral effects from systemic endocrine functions. This model is particularly relevant for testing GnRH pathway inhibitors and understanding crosstalk with estrogen receptor signaling, given that these cells retain steroid hormone responsiveness.
These polyclonal knockout cells support diverse applications, including hormone-dependent cancer biology, autocrine signaling studies, and drug target validation. Researchers can use RT-qPCR, western blotting for GnRHR and phospho-ERK, proliferation assays, and ELISA to monitor functional changes. They are also suitable for reproductive axis research in co-culture systems. For further information, contact Ascent Research.
