4.8 Article

Implantable, Biodegradable, and Wireless Triboelectric Devices for Cancer Therapy through Disrupting Microtubule and Actins Dynamics

Journal

ADVANCED MATERIALS
Volume 35, Issue 40, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202303962

Keywords

biodegradable; cancer therapy; electric field stimulation; mitosis; triboelectric devices

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This research proposes an implantable, wirelessly controlled therapeutic nanogenerator that uses ultrasound to generate electrical stimulation and release drugs into tumor tissues. By disrupting cell mitosis and inducing cell death, this device provides a new method for cancer treatment.
Electric-field-based stimulation is emerging as a new cancer therapeutic modality through interfering with cell mitosis. To address its limitations of complicated wire connections, bulky devices, and coarse spatial resolution, an improved and alternative method is proposed for wirelessly delivering electrical stimulation into tumor tissues through designing an implantable, biodegradable, and wirelessly controlled therapeutic triboelectric nanogenerator (ET-TENG). With the excitation of ultrasound (US) to the ET-TENG, the implanted ET-TENG can generate an alternating current voltage and concurrently release the loaded anti-mitotic drugs into tumor tissues, which synergistically disrupts the assembly of microtubules and filament actins, induces cell cycle arrest, and finally enhances cell death. With the assistance of US, the device can be completely degraded after the therapy, getting free of a secondary surgical extraction. The device can not only work around those unresectable tumors, but also provides a new application of wireless electric field in cancer therapy.

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