Impedimetric Detection and Electromediated Apoptosis of Vascular Smooth Muscle Using Microfabricated Biosensors for Diagnosis and Therapeutic Intervention in Cardiovascular Diseases

Anubhav Bussoo, Daniel Hoare, Mahmut T. Kirimi, Srinjoy Mitra, Nosrat Mirzai, Steven L. Neale, John Mercer

Research output: Contribution to journalArticlepeer-review

Abstract

Cardiovascular diseases remain a significant global burden with 1‐in‐3 of all deaths attributable to the consequences of the disease. The main cause is blocked arteries which often remain undetected. Implantable medical devices (IMDs) such as stents and grafts are often used to reopen vessels but over time these too will re‐block. A vascular biosensor is developed that can report on cellularity and is amenable to being mounted on a stent or graft for remote reporting. Moreover, the device is designed to also receive currents that can induce a controlled form of cell death, apoptosis. A combined diagnostic and therapeutic biosensor would be transformational for the treatment of vascular diseases such as atherosclerosis and central line access. In this work, a cell sensing and cell apoptosing system based on the same interdigitated electrodes (IDEs) is developed. It is shown that the device is scalable and that by miniaturizing the IDEs, the detection sensitivity is increased. Apoptosis of vascular smooth muscle cells is monitored using continuous impedance measurements at a frequency of 10 kHz and rates of cell death are tracked using fluorescent dyes and live cell imaging.
Original languageEnglish
Article number1902999
Pages (from-to)1-11
JournalAdvanced Science
Volume7
Issue number18
Early online date27 Jul 2020
DOIs
Publication statusPublished - 23 Sep 2020

Keywords

  • Apoptosis
  • atherosclerosis
  • Cardiovascular disease
  • impedance sensors
  • smart stents

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