UCD researchers identify cellular courier system capable of bypassing natural biological barriers for drug delivery

New research from University College Dublin reveals a biological courier system that could revolutionize how RNA and gene therapies reach target cells.

By: AXL Media

Published: Apr 16, 2026, 7:54 AM EDT

Source: Information for this report was sourced from University College Dublin

A Breakthrough in Intercellular Communication

Researchers at University College Dublin have uncovered a previously unknown biological "courier system" that allows cells to transmit coherent messages to one another. Published in the journal Nature Materials, the study identifies a mechanism that grants these couriers access to natural gateways within the body that are typically impenetrable to conventional medicines. According to Associate Professor Yan Yan, the lead author from the UCD School of Biomolecular and Biomedical Science, this discovery could allow scientists to ferry functional biomolecule "toolkits" directly into inaccessible cellular regions, significantly enhancing the safety and precision of modern protein and gene therapies.

The Formation of the Condensate Corona

The discovery centers on the unexpected behavior of certain nanoparticles when they enter a cellular environment. The research team, based at UCD’s Centre for BioNano Interactions, observed that these particles undergo a transformation by acquiring a dense, stable coating known as a "condensate corona." This layer is comprised of the host cell’s own RNA and proteins, essentially wrapping the nanoparticle in a small, biological program. This coating acts as a protective shield and a set of "keys" that allow the particle to navigate the complex internal landscape of the organism without triggering immediate defensive responses.

Capturing Biological Messages in Transit

To understand how these droplets function, the investigators utilized tiny magnets embedded within the particles to capture them while they were moving between cells. This innovative approach allowed the researchers to intercept and "read" the biological instructions before they reached their destination. The study revealed that these messages remain entirely intact during the delivery process. Professor Kenneth Dawson, Director of the Centre for BioNano Interactions, noted that while scientists had long suspected the existence of such a messaging system, identifying it was difficult due to the overwhelming variety of particulates found within the human body.