Researchers Develop Microneedle Patch for Painless Immune Monitoring

Researchers develop a noninvasive microneedle patch to sample immune cells and inflammatory signals, offering a painless alternative to blood draws and biopsies.

By: AXL Media

Published: Mar 2, 2026, 5:54 AM EST

Source: The information in this article was sourced from Jackson Laboratory

Development of the microneedle monitoring platform

A collaborative team of researchers from The Jackson Laboratory and the Massachusetts Institute of Technology has introduced a bandage like microneedle patch designed to monitor the body's immune health. The device, which is approximately the size of a quarter, represents a significant shift in medical diagnostics by allowing for the collection of immune data without the need for traditional blood draws or surgical biopsies. Published in the journal Nature Biomedical Engineering, the study details how the platform can detect inflammatory signals in minutes and gather specialized immune cells within hours.

Harnessing natural immune sentinel responses

The technology operates by leveraging resident memory T cells, which are immune sentinels located in barrier tissues like the skin. These cells are often sparse in the bloodstream, making them difficult to capture through standard blood tests. When the patch introduces a small amount of antigen, these resident cells trigger a natural alarm system that recruits additional immune cells from the bloodstream to the skin site. This process concentrates key biological markers, allowing the patch to absorb them for analysis and providing a dynamic readout of the immune system's strength.

Clinical applications for autoimmunity and aging

Sasan Jalili, a biomedical engineer and immunologist at The Jackson Laboratory, noted that the patch is already being used to study immune responses in skin autoimmunity conditions such as vitiligo and psoriasis. Beyond chronic skin conditions, the device is being utilized to investigate how age related skin changes contribute to systemic inflammation and frailty in older adults. Because the microneedles only reach the upper layers of the skin, the process avoids damaging nerves or blood vessels, making it an ideal tool for sensitive patients, including infants and the elderly.