Kisspeptin: A Single Peptide That Links Fertility and Metabolism, with Therapeutic Potential for Both | Research

The takeaway

Kisspeptins regulate both reproduction and metabolism in a sex-dependent manner, and disruptions in kisspeptin signaling are implicated in diabetes, obesity, PCOS, and hypogonadism — making them a dual therapeutic target.

Only 15% of studies address metabolism
Despite clear evidence of kisspeptin's metabolic role, the vast majority of clinical research has focused exclusively on fertility

What the researchers found

Kisspeptins regulate both reproduction and metabolism in a sexually dimorphic manner, with disruptions in metabolic conditions leading to simultaneous reproductive dysfunction. Only 15% of clinical studies address kisspeptin's metabolic role.

Why it matters

Many metabolic disorders coexist with reproductive problems (e.g., PCOS with insulin resistance, obesity with hypogonadism). A peptide that links both systems could enable treatments addressing root causes rather than treating metabolic and reproductive issues separately.

The numbers in context

Kisspeptin acts through receptors in the brain, brown adipose tissue, and pancreas.

How the study worked

Narrative review of experimental (animal model) and clinical evidence on kisspeptin's dual role in metabolism and reproduction, covering diabetes, obesity, undernutrition, PCOS, and hypogonadism.

Who was studied

Preclinical and clinical evidence on metabolic and reproductive dysfunction

What this study cannot tell us

Narrative review with limited systematic methodology. Clinical evidence for metabolic effects of kisspeptin is still sparse. The sexual dimorphism in kisspeptin's metabolic actions complicates therapeutic development. Most metabolic data comes from animal models.

How to read the evidence

Preliminary to moderate evidence. Strong preclinical support across multiple animal models, but limited clinical evidence for metabolic applications.

When this study was published

Published in 2024. Highlights an emerging and rapidly expanding field of kisspeptin research.

The bigger picture

The discovery that kisspeptin connects two fundamental biological systems — reproduction and metabolism — opens a new frontier in peptide therapeutics. This is particularly relevant for conditions like PCOS, where metabolic and reproductive dysfunction are deeply intertwined.

Questions still open

Could kisspeptin-based therapies simultaneously improve metabolic and reproductive outcomes in PCOS patients?
What explains the sex-dependent differences in kisspeptin's metabolic effects?
Would kisspeptin receptor agonists be more effective than GLP-1 drugs for metabolically-driven infertility?

Common questions

What is kisspeptin?

Kisspeptin is a peptide hormone that acts as a master switch for reproduction by triggering the release of gonadotropin-releasing hormone. It was originally discovered as a tumor suppressor. Now it's recognized as also playing important roles in metabolism, including glucose regulation and fat metabolism.

How could kisspeptin help with conditions like PCOS?

PCOS involves both reproductive dysfunction (irregular ovulation) and metabolic problems (insulin resistance). Since kisspeptin regulates both systems, targeting kisspeptin signaling could potentially address the root connection between these problems rather than treating each separately.

Read the original research

Kisspeptin a potential therapeutic target in treatment of both metabolic and reproductive dysfunction.

Journal of diabetes, 16(4), e13541

View on PubMed ↗Publisher’s paper ↗

Citation

Sliwowska, Joanna Helena; Woods, Nicola Elizabeth; Alzahrani, Abdullah Rzgallah; Paspali, Elpiniki; Tate, Rothwelle Joseph; Ferro, Valerie Anne. (2024). Kisspeptin a potential therapeutic target in treatment of both metabolic and reproductive dysfunction.. Journal of diabetes, 16(4), e13541. https://doi.org/10.1111/1753-0407.13541