Miniaturized neural system for chronic, local intracerebral drug delivery

Canan Dagdeviren, Khalil B. Ramadi, Pauline Joe, Kevin Spencer, Helen N. Schwerdt, Hideki Shimazu, Sebastien Delcasso, Ken Ichi Amemori, Carlos Nunez-Lopez, Ann M. Graybiel, Michael J. Cima, Robert Langer

    Research output: Contribution to journalArticlepeer-review


    Recent advances in medications for neurodegenerative disorders are expanding opportunities for improving the debilitating symptoms suffered by patients. Existing pharmacologic treatments, however, often rely on systemic drug administration, which result in broad drug distribution and consequent increased risk for toxicity. Given that many key neural circuitries have sub–cubic millimeter volumes and cell-specific characteristics, small-volume drug administration into affected brain areas with minimal diffusion and leakage is essential. We report the development of an implantable, remotely controllable, miniaturized neural drug delivery system permitting dynamic adjustment of therapy with pinpoint spatial accuracy. We demonstrate that this device can chemically modulate local neuronal activity in small (rodent) and large (nonhuman primate) animal models, while simultaneously allowing the recording of neural activity to enable feedback control.

    Original languageEnglish (US)
    Article numbereaan2742
    JournalScience Translational Medicine
    Issue number425
    StatePublished - Jan 24 2018

    ASJC Scopus subject areas

    • General Medicine


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