University of Michigan Breakthrough Boosts Gene Mapping Resolution 4X

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Researchers at the University of Michigan have developed a groundbreaking new gene mapping technique called Seq-Scope-X that can pinpoint the location of every expressed mRNA molecule within intact tissue samples with four times the resolution of previous methods. By embedding tissue samples in hydrogel and infusing them with water, the team was able to expand the samples proportionally while maintaining their structure, allowing them to use an Illumina sequencer to differentiate between cells and even identify transcripts from different cellular structures like the nucleus and cytoplasm.

Why it matters

This major advancement in gene mapping technology has the potential to unlock new discoveries and a deeper understanding of the intricacies of life at the cellular level. The rapid progress in this field, with resolution improving fourfold annually for nearly a decade, positions the University of Michigan as a leader in this exciting area of scientific research.

The details

The Seq-Scope method, developed by researchers at the University of Michigan in 2021, allowed them to pinpoint the location of every expressed mRNA molecule within intact tissue samples using an Illumina sequencer. However, the team, led by Jun Hee Lee, Ph.D., wanted to push the boundaries even further. They discovered that the Illumina sequencer's ability to read tissue slides was limited to a mere micron due to molecular diffusion. To overcome this, the researchers embedded the tissues in hydrogel and infused them with water, making the samples larger while maintaining their proportional structure. This innovative approach, conceived by graduate student Angelo Anacleto and further developed with the expertise of Hee-Sun Han, Ph.D., enabled the team to employ their Seq-Scope-eXpanded (Seq-Scope-X) method, which revealed astonishing cellular-level details, including the ability to differentiate between mRNAs transcribed in the nucleus and cytoplasm of liver cells, thanks to the computational wizardry of Hyun Min Kang, Ph.D.

• The Seq-Scope method was developed by researchers at the University of Michigan in 2021.
• The latest findings using the Seq-Scope-X method were published in Nature Communications in 2026.

What they’re saying

What’s next

The University of Michigan team plans to continue refining and expanding the capabilities of the Seq-Scope-X method, with the goal of unlocking even more detailed insights into the complex world of gene expression and cellular function.