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  3. Genetically Engineered Human Cell-based Microrobots For Selective Cancer Cell Death.
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  3. Genetically Engineered Human Cell-based Microrobots For Selective Cancer Cell Death.

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Genetically engineered human cell-based microrobots for selective cancer cell death.

Nihal Olcay Dogan1,2, Eylül Suadiye3, Julia Unangst3

  • 1Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.

Science Advances
|April 29, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Biohybrid microrobots combine magnetic targeting with genetically engineered cells to deliver cancer-killing TRAIL. This system achieves selective cancer cell death, avoiding damage to healthy cells for improved targeted therapy.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Cancer Therapy

Background:

  • Current medical microrobots lack biological selectivity, limiting their therapeutic potential.
  • Distinguishing cancerous from healthy cells at the target site remains a significant challenge.

Purpose of the Study:

  • To develop a biohybrid microrobot system with both magnetic targeting and biological selectivity.
  • To engineer microrobots capable of targeted and cancer-selective therapeutic delivery.

Main Methods:

  • Human embryonic kidney cells were engineered to produce tumor necrosis factor-related apoptosis-inducing ligand (TRAIL).
  • Engineered cells were conjugated to magnetic Janus particles (silica beads with FePt nanofilms).
  • External magnetic fields were used to guide microrobots to tumor spheroids.

Main Results:

  • Microrobots accumulated around tumor spheroids using magnetic fields.
  • Engineered microrobots continuously released TRAIL over several days.
  • Selective cancer cell death was observed without damaging healthy cells.

Conclusions:

  • The biohybrid microrobot system successfully combines magnetic targeting with biological selectivity.
  • This approach enables targeted, prolonged, and cancer-selective therapeutic delivery.
  • The study demonstrates a novel strategy for advanced cancer treatment using microrobotics and cell therapy.