UCD discovery reveals cellular messaging system with therapeutic potential
Researchers at University College Dublin have identified a previously unknown mechanism by which cells package and transmit biological messages, a finding that could reshape targeted drug delivery and gene-based therapies.
The study, published in Nature Materials on April 16, describes how certain nanoparticles entering a cell can undergo a transformation, forming a dense coating called a “condensate corona.” This structure, built from the cell’s own proteins and RNA, acts as more than a passive shell. It carries functional biological instructions that can be transferred to other cells.
The research was led by Kenneth Dawson and Yan Yan. Their team used magnetized nanoparticles to capture these coated complexes as they moved between cells, allowing them to analyze the transmitted biological signals.
Once inside a recipient cell, the condensate corona separates from the nanoparticle core and avoids cellular degradation. It then releases proteins and RNA into the cell’s internal systems. Tests confirmed that these molecules remain enzymatically active, meaning they can directly influence cellular function.
The findings carry significant implications for medicine. Current nanoparticle-based therapies often struggle to cross natural cellular barriers. The condensate corona appears to exploit internal cellular pathways that standard delivery methods cannot access, effectively acting as a biological key.
Researchers suggest this mechanism could enable delivery of functional biomolecular “toolkits,” including corrective RNA messages, into previously inaccessible regions within cells. This could improve treatments based on RNA therapies and gene editing technologies.
The study also points to potential risks. The same system, when disrupted, may contribute to cancer metastasis by facilitating harmful cellular communication.
The authors describe the condensate corona as distinct from known extracellular vesicles, containing intact proteins, messenger RNA, and long non-coding RNA organized into ribonucleoprotein structures. These assemblies appear capable of overcoming long-standing challenges in nanoscale therapeutics.
Researchers say the discovery introduces a new framework for delivering therapeutic biological signals and could support future treatments aimed at reversing, rather than managing, diseases that currently lack effective options.
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