COV434

Cat.No.: CSC-C9170W

Species: Homo sapiens (Human)

Source: Ovary

Morphology: epithelial

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Cat.No.
CSC-C9170W
Description
Human ovarian granulosa tumour cell line established from a solid primary tumour.
Species
Homo sapiens (Human)
Source
Ovary
Recommended Medium
Morphology
epithelial
Disease
Ovarian Small Cell Carcinoma
Storage and Shipping
liquid nitrogen vapor phase
Synonyms
COV-434; COV 434
Citation Guidance
If you use this products in your scientific publication, it should be cited in the publication as: Creative Bioarray cat no. If your paper has been published, please click here to submit the PubMed ID of your paper to get a coupon.

COV434 Cells were isolated from a juvenile granulosa cell tumor (JGCT) of the ovary, which is a type of human ovarian granulosa tumor cell line. COV434 cells have been used extensively as an in vitro system for studying granulosa cell biology, ovarian tumorigenesis, and reproductive endocrinology. COV434 cells grow as adherent cells with an epithelial-like phenotype and express the granulosa cell markers FOXL2, inhibin α, anti-Müllerian hormone (AMH), and aromatase (CYP19A1). They typically grow as monolayers of polygonal cells, though morphology and marker expression may vary depending on conditions used during cell culture. Functionally, they possess features of steroidogenic granulosa cells and secrete factors that help regulate the growth and differentiation of other cells in the ovarian follicle. COV434 cells harbor mutations and activated signaling pathways commonly found in granulosa cell tumors, though some molecular features may differ from models of adult granulosa tumors.

COV434 cells have been used to study processes such as cell proliferation, apoptosis, steroid hormone biosynthesis and signaling, PI3K/AKT signaling, TGF-β/SMAD signaling, cAMP/PKA signaling, and other signaling pathways that regulate granulosa cell function and tumorigenesis. They have been used to study endocrine regulation and ovarian development as well as mechanisms of ovarian tumorigenesis. COV434 cells have also been used in drug screening and evaluation of targeted therapeutics against ovarian granulosa cell tumors.

The Role of Macrophages Phenotypes in the Activation of Resolution Pathways within Human Granulosa Cells

Inflammation of the ovaries alters follicular fluid dynamics and leads to poor oocyte quality causing infertility. Macrophages are divided into pro-inflammatory (M1) and anti-inflammatory (M2) phenotypes. These cells secrete inflammatory mediators that could potentially trigger distinct pathways in human granulosa cells (hGCs). However, the impact of these macrophage phenotypes on COX-2 and LOX enzymes expression in hGCs is unknown.

Martins et al. used an in vitro co-culture of hGCs isolated from ART patients with COV434 cell line and stimulated with conditioned media (CM) collected from M0, M1, and M2 macrophages. Real-time PCR and western blot were used to measure COX-2 and LOX enzyme expression levels as markers for oocyte competence. Cell viability assays showed that CM from macrophage M1 and M2 phenotypes altered viability of hGCs and COV434 cells compared to control group M0 after 72 h of interaction (Fig. 1). There were no observed morphological alterations of hGCs or COV434 cells after 72 h of incubation with M1 or M2 CM (Fig. 2). THP-1 macrophage differentiation was confirmed, which allowed for the creation of the interaction model between M1 and M2 macrophage CM and hGCs/COV434 cells. After incubating for 72 h cells were lysed and mRNA and protein were extracted. RT-PCR and western blot analysis was used to analyze COX-2 and 5-, 12-, and 15-LOX expression in hGCs and COV434 cells (Fig. 3).

Effects of conditioned media obtained from culture of M1 and M2 macrophages in hGCs and COV434 cells viability.

Fig. 1. Effects of conditioned media obtained from culture of M1 and M2 macrophages in hGCs and COV434 cells viability (Martins T S, Fonseca B M, et al., 2022).

Effects of conditioned media obtained from culture of M1 and M2 macrophages in hGCs and COV434 cells morphology.

Fig. 2. Effects of conditioned media obtained from culture of M1 and M2 macrophages in hGCs and COV434 cells morphology (Martins T S, Fonseca B M, et al., 2022).

Expression of COX-2 and 5-, 12-, and 15-LOX in COV434 by mRNA and protein levels.

Fig. 3. Expression of COX-2 and 5-, 12-, and 15-LOX in COV434 by mRNA and protein levels (Martins T S, Fonseca B M, et al., 2022).

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