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Development of Ferroelectric P(VDF-TrFE) Microparticles for Ultrasound-Driven Cancer Cell Killing.
ACS Applied Materials & Interfaces 2023 November 15
Current breast cancer treatments involve aggressive and invasive methods, leaving room for new therapeutic approaches to emerge. In this work, we explore the possibility of using piezoelectric [P(VDF-TrFE)] microparticles (MPs) as a source of inducing irreversible electroporation (IRE) of 4T1 breast cancer cells. We detail the MP formation mechanism and size control and subsequent characterizations of the as-synthesized MPs which confirms the presence of piezoelectric β-phase. Production of the necessary piezoelectric output of the MPs is achieved by ultrasound agitation. We confirm the primary factor of the IRE effect on 4T1 breast cancer cells to be the local electric field produced from the MPs by using confocal imaging and an alamarBlue assay. The results show a 52.6% reduction in cell viability, indicating that the MP treatment can contribute to a reduction of live cancer cells. The proposed method of ultrasound-stimulated P(VDF-TrFE) MPs may offer a more benign cancer treatment approach.
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