A patch containing tens of millions of microscopic nanoneedles could soon replace traditional biopsies, scientists have found. The patch offers a painless and less invasive alternative for millions of patients worldwide who undergo biopsies each year to detect and monitor diseases like cancer and Alzheimer’s. The research is published in Nature Nanotechnology.

Challenges of Traditional Biopsies

Biopsies are among the most common diagnostic procedures worldwide, performed millions of times each year. However, they are invasive, can cause pain and complications, and can deter patients from seeking further evaluation or follow-up tests. Traditional biopsies also involve the removal of small tissue samples, which limits the frequency and comprehensiveness of analyses that can be performed on diseased organs such as the brain.

The Innovative Nanoneedle Patch

Researchers at King's College London have developed a nanoneedle patch that painlessly collects molecular information from tissues without removing or damaging them. This innovative technology could allow healthcare teams to:

  • Monitor disease in real-time.
  • Perform multiple repeatable tests from the same area—something impossible with standard biopsies.

Technical Specifications and Functionality

The nanoneedles are 1,000 times thinner than a human hair. Because these needles do not remove tissue, they cause no pain or damage, significantly improving the patient experience compared to standard biopsies.

Dr. Ciro Chiappini, the lead researcher, stated, "We have been working on nanoneedles for twelve years, but this is our most exciting development yet. It opens a world of possibilities for people with cancer, Alzheimer’s, and for advancing personalized medicine. It will allow scientists—and eventually clinicians—to study disease in real time like never before."

Real-Time Disease Monitoring

In a key study, the team applied the patch to brain cancer tissue samples obtained from human biopsies and mouse models. The nanoneedles effectively extracted molecular "fingerprints"—including lipids, proteins, and mRNAs—from cells without damaging the surrounding tissue. The analysis utilized mass spectrometry and AI, providing healthcare teams with detailed insights into:

  • Whether a tumor is present.
  • How the tumor is responding to treatment.
  • The progression of disease at the cellular level.

Applications in Surgery

This technology is especially valuable during invasive procedures. For instance, by applying the patch to a suspicious area during brain surgery, surgeons could obtain results within 20 minutes, guiding real-time decisions about removing cancerous tissue.

Manufacturing and Integration

The nanoneedles are manufactured using the same techniques as computer chips, making them adaptable for integration into common medical devices such as:

  • Bandages
  • Endoscopes
  • Contact lenses

Implications for Patients

Dr. Chiappini concluded, "This could be the beginning of the end for painful biopsies. Our technology opens up new ways to diagnose and monitor disease safely and painlessly—helping doctors and patients make better, faster decisions."

The breakthrough was achieved through a collaborative effort across multiple disciplines, including nanoengineering, molecular biology, and artificial intelligence, each contributing essential tools and perspectives that, together, unlocked a new approach to non-invasive diagnostics.

Conclusion

The development of the nanoneedle patch represents a significant advancement in medical technology, particularly in the realm of diagnostics. By offering a painless and less invasive method for disease monitoring, this innovative approach could transform how conditions such as cancer and Alzheimer’s are diagnosed and treated.

Further Reading

For more information, refer to the publication: Nanoneedles enable spatiotemporal lipidomics of living tissues, Nature Nanotechnology (2025).

References:
- Nanoneedle patch offers painless alternative to traditional cancer biopsies. (2025, June 16). Retrieved from Phys.org.