Could a Synthetic Probiotic Replace a Strict Diet for Patients with Phenylketonuria?

Synthetic biologists introduced an engineered microbe that may lead to new treatment options for phenylketonuria.

Written byRoni Dengler, PhD
| 2 min read
image-2021-08-16-08-24-55-620
Register for free to listen to this article
Listen with Speechify
0:00
2:00
Share

Patients with phenylketonuria (PKU), a rare metabolic disorder, adhere to a special—and severe—diet throughout their lives. PKU patients are unable to metabolize phenylalanine (Phe), an essential amino acid. Without intervention, Phe from the diet builds up in the body. The accumulation can lead to intellectual disability, seizures, and irreversible brain damage.

Treatment involves a strict diet with very little protein. Foods such as meat, eggs, and fish are off the table; so are nuts, beans, peas, and chocolate. To get enough nutrients, patients supplement with a Phe-free formula. As the years pass, many patients have difficulty sticking to the diet.

Marja Puurunen, senior medical director at Synlogic, and her colleagues developed a probiotic that safely helps break down Phe. The results may lead to better treatment options for PKU patients.

“Families and patients repeatedly tell us they need more options to effectively live with their disease,” Puurunen said. “This study ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to more than 35 years of archives, as well as TS Digest, digital editions of The Scientist, feature stories, and much more!
Already a member? Login Here
December digest cover image of a wooden sculpture comprised of multiple wooden neurons that form a seahorse.
December 2025, Issue 1

Wooden Neurons: An Artistic Vision of the Brain

A neurobiologist, who loves the morphology of cells, turns these shapes into works of art made from wood.

View this Issue
Stacks of cell culture dishes, plates, and flasks with pink cell culture medium on a white background.

Driving Innovation with Cell Culture Essentials

Merck
Stacks of cell culture dishes, plates, and flasks with pink cell culture medium on a white background.

Driving Innovation with Cell Culture Essentials

MilliporeSigma purple logo
Abstract wireframe sphere with colorful dots and connecting lines representing the complex cellular and molecular interactions within the tumor microenvironment.

Exploring the Inflammatory Tumor Microenvironment 

Cellecta logo
An image of a DNA sequencing spectrum with a radial blur filter applied.

A Comprehensive Guide to Next-Generation Sequencing

Integra Logo

Products

brandtech logo

BRANDTECH® Scientific Announces Strategic Partnership with Copia Scientific to Strengthen Sales and Service of the BRAND® Liquid Handling Station (LHS) 

Top Innovations 2026 Contest Image

Enter Our 2026 Top Innovations Contest

Biotium Logo

Biotium Expands Tyramide Signal Amplification Portfolio with Brighter and More Stable Dyes for Enhanced Spatial Imaging

Labvantage Logo

LabVantage Solutions Awarded $22.3 Million U.S Customs and Border Protection Contract to Deliver Next-Generation Forensic LIMS