Related Experiment Video

Updated: Jan 31, 2026

Author Spotlight: Investigating the Mechanisms and Inducing Models of Polycystic Ovary Syndrome
04:49

Author Spotlight: Investigating the Mechanisms and Inducing Models of Polycystic Ovary Syndrome

Published on: July 5, 2024

1.8K

Experimental polycystic ovarian syndrome is associated with reduced expression and function of P2Y2 receptors in rat

Anaí Del Rocío Campos-Contreras1, Ana Patricia Juárez-Mercado1, Adriana González-Gallardo2

  • 1Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla Querétaro, México.

Molecular Reproduction and Development
|January 10, 2019
PubMed

Insights

Polycystic ovary syndrome (PCOS) disrupts ovarian function by altering purinergic signaling. P2Y2 receptor activity, crucial for theca cell proliferation in healthy ovaries, is reduced in PCOS, leading to lost control over cell growth.

Area of Science:

  • Endocrinology
  • Reproductive Biology
  • Cell Signaling

Background:

  • Extracellular purines, acting via specific receptors, are emerging regulators of ovarian function.
  • P2Y2 receptor activity is known to stimulate theca cell proliferation.

Purpose of the Study:

  • To investigate the role of purinergic signaling in polycystic ovary syndrome (PCOS) by analyzing UTP-sensitive P2Y receptors in theca cells (TC).
  • To determine the impact of experimentally-induced PCOS (EI-PCOS) on P2Y receptor expression and TC proliferation.

Main Methods:

  • Polymerase chain reaction (PCR) to detect P2Y receptor transcripts in rat TC.
  • Assessment of extracellular signal-regulated kinases (ERK) phosphorylation in response to UTP.
  • Analysis of TC proliferation in control and EI-PCOS rat models.
  • In silico promoter analysis of P2yr2 and testosterone stimulation experiments.

Main Results:

  • All P2Y receptor transcripts were detected in normal rat TC; UTP induced ERK phosphorylation.
  • EI-PCOS rats exhibited reduced P2Y2 receptor (P2Y2R) expression in TC, while P2Y4R expression remained unchanged.
  • UTP stimulated TC proliferation in control rats but not in EI-PCOS rats, indicating P2Y2R's role.
  • Testosterone significantly reduced P2yr2 transcript expression in TC.

Conclusions:

  • P2Y2R is the primary P2Y receptor mediating UTP-induced proliferation in rat TC.
  • The regulatory role of P2Y2R in TC proliferation is impaired in the context of EI-PCOS.
  • Androgenic influence, via response elements in the P2yr2 promoter, contributes to the altered P2Y2R expression in PCOS.
Keywords:
P2Y receptorsP2Y2polycystic ovarian syndrome (PCOS)purinergic signaling

More Related Videos

A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome08:20

A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome

Published on: October 2, 2018

11.9K
Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model09:44

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model

Published on: March 5, 2022

3.4K

Related Concept Videos

Cell Specific Gene Expression01:58

Cell Specific Gene Expression

Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.5K
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

5.6K
Internal Receptors01:31

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
74.6K
Types of Receptors: Cell Surface Receptors01:28

Types of Receptors: Cell Surface Receptors

Cell-surface receptors, also known as transmembrane receptors, are cell surface, membrane-anchored (integral) proteins that bind to external ligand molecules. This type of receptor spans the plasma membrane and performs signal transduction, converting an extracellular signal into an intracellular signal. Ligands that interact with cell-surface receptors do not have to enter the cell that they affect. Cell-surface receptors are also called cell-specific proteins or markers because they are...
27.3K
Reducing Line Loss01:18

Reducing Line Loss

In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
389
What is Gene Expression?01:42

What is Gene Expression?

Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
196.6K