Scientists develop revolutionary new treatment for polycystic ovary syndrome (PCOS)

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Researchers at the University of Chicago have developed a potentially transformative treatment for Polycystic Ovary Syndrome (PCOS), a common endocrine disorder that affects millions of women worldwide.

This novel treatment aims to go beyond merely managing symptoms to address the underlying causes of PCOS.

The Science: Mesenchymal Stem Cells and Exosomes

The research focuses on mesenchymal stem cell-derived extracellular vesicles (MSC-derived EVs), also known as exosomes.

These are small packages of molecules that stem cells release, and they appear to play a pivotal role in mitigating the symptoms of PCOS.

“Our approach represents a paradigm shift from symptom management to treating the underlying causes,” said Hang-Soo Park, Ph.D., the study’s first author.

“We hope this will prove more effective in the long term and allow patients to have children if they wish to do so.”

How It Works

Through experimentation, the researchers discovered that these MSC-derived EVs can downregulate genes responsible for the overproduction of androgen hormones, a characteristic feature of PCOS.

When injected into mouse models, the EVs not only stabilized metabolic irregularities like elevated glucose levels but also restored ovarian function.

Anti-Inflammatory Mechanisms

The researchers suggest that an immune signaling protein, IL-10, known for its anti-inflammatory properties, may be central to the therapeutic effects observed.

The exosomes act as a delivery system, carrying IL-10 to target cells and amplifying its anti-inflammatory and restorative effects.

Advantages Over Current Treatments

Traditional treatments for PCOS often involve the use of oral contraceptives that fail to address fertility issues commonly associated with the disorder. This new treatment method offers distinct advantages over existing options, including:

More accessibility: Unlike whole stem cell therapy, using EVs is potentially less expensive.

Better safety profile: Minimal concerns about tumor formation or immunogenic reactions.

Fertility preservation: The treatment aims to restore ovarian function, a critical factor for women who wish to conceive.

Towards Human Clinical Trials

Clinical trials using EV therapy for reproductive disorders have already received approval, enhancing the likelihood of this research translating into practical applications.

The team is now seeking grants to fund human clinical trials and is working to improve the precision of the EVs in targeting ovarian tissue.


Published in the International Journal of Molecular Sciences, this groundbreaking study offers renewed hope for treating the root causes of PCOS. While much work remains, the potential for revolutionizing PCOS treatment is enormous.

“As we understand more and more, the treatments will become even safer and more effective,” concluded Park.

For countless women grappling with the complexities of PCOS, this research may signal the dawn of a new era in treatment and fertility options.

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The research findings can be found in the International Journal of Molecular Sciences.

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