In Vivo Spatial Transcriptomics for Bleeding-free Profiling Human Internal Organs
TL;DR
Researchers developed a biochip system called ENDO-Genome that attaches to standard endoscopes to safely extract and map RNA directly from living human internal organs without causing bleeding.
Problem / question
Current spatial transcriptomics methods require surgically removing tissue via biopsies, which carries bleeding risks and can alter the natural state of the cells, preventing safe, real-time genetic profiling of living internal organs.
Methods
The team created ENDO-Genome, a tiny, pressure-sensitive biochip covered in nanoprobes that captures RNA when gently pressed against tissue. They attached this chip to standard endoscopes and tested it on rodent organs and in a clinical trial with 17 human subjects, including 15 with Crohn's disease. The system mapped 55 specific RNA transcripts using a low-cost, imaging-based decoding method rather than traditional sequencing.
Key findings
The device successfully extracted RNA from highly vascularized organs like the liver and kidney in rodents, and from the human digestive tract, with zero bleeding or complications across 47 clinical operations. In Crohn's disease patients, the system uncovered unique spatial patterns of gene activity, particularly in the ileum, revealing how specific inflammation and RNA regulation genes cluster together during active disease.
Why it matters
This technology allows doctors to safely and cheaply monitor gene expression patterns inside the living body, offering a new way to diagnose diseases, track their progression over time, and tailor treatments without the risks and tissue damage associated with traditional biopsies.
Limitations
The paper does not explicitly detail technical limitations of the device itself, though the authors note that the exact biological mechanisms behind the newly discovered gene patterns in Crohn's disease require further investigation.
Takeaway
ENDO-Genome provides a safe, biopsy-free way to map gene activity directly inside living human organs, opening the door to better, less invasive disease monitoring and diagnostics.