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Medical Nanorobots
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# Medical Nanorobots Portal: Future Pharma Stage: Preclinical Evidence: Preclinical Template: Drug platform Risk: Moderate Reversibility: Context dependent Last reviewed: Apr 2026 == Summary == Programmable nanoscale devices — often built from DNA — can carry drugs and release them on a molecular cue, with early tumor-targeting demonstrations in animals. == Key takeaways == * DNA origami can fold into containers that open only when they sense a target molecule. * In mice, nanorobots have delivered a clotting agent to tumor blood vessels. * The popular image of free-swimming repair machines is far beyond current capability. == Mechanism == Structural DNA nanotechnology lets designers fold strands into precise shapes, including logic-gated containers that expose a payload only in the presence of specific molecular keys. This turns delivery into a programmable decision made at the nanoscale, rather than a drug simply diffusing everywhere and hoping to reach the target. == Where it really stands == The strongest demonstrations remain in animals: nanorobots that recognize tumor markers and release a payload at the tumor. Human use faces immune, manufacturing, and control hurdles. The science-fiction vision of swarms of general-purpose repair machines is not what is being built; the near-term reality is smarter, more selective delivery. == Open questions == * Can nanoscale delivery devices evade immune clearance in humans? * How is dosing and control verified for a self-triggering device? == Watchlist == * First human trials * Immunogenicity * Manufacturing at scale == References == * A logic-gated nanorobot for drug delivery — Douglas et al., Science, 2012. https://pubmed.ncbi.nlm.nih.gov/22403349/. DNA container that opens only on molecular recognition. * DNA nanorobots deliver thrombin to tumors — Li et al., Nature Biotechnology, 2018. https://pubmed.ncbi.nlm.nih.gov/29441970/. Tumor-targeted payload delivery in tumor-bearing mice. == Categories == [[Category:Future Pharma]] [[Category:DNA nanotechnology]] [[Category:targeted delivery]] [[Category:nanomedicine]]