Zahraie N, Haghighi H, Salehi F, Daneshvar F, Tamaddon P, Sattarahmady N. Pulsed sonodynamic therapy of melanoma cancer cells using nanoparticles of and mesoporous platinum.
ULTRASOUND IN MEDICINE & BIOLOGY 2023:S0301-5629(23)00205-3. [PMID:
37414634 DOI:
10.1016/j.ultrasmedbio.2023.06.011]
[Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 07/08/2023]
Abstract
OBJECTIVE
Noble metal nanomaterials have been introduced as ideal sonosensitizers for sonodynamic therapy (SDT) of cancer. In this research, platinum nanoparticles (PtNPs) and mesoporous platinum (MPt) were first synthesized and then evaluated as novel sonosensitizers.
METHODS
Ultrasound waves were radiated at two different power densities and two different pulse ratios to develop a pulsed radiation route for SDT of the malignant melanoma cell line C540 (B16/F10). Fluorescence emission was recorded as an indicator of intracellular reactive oxygen generation during the treatment.
RESULTS
Platinum nanoparticles had an average diameter of 12 ± 7 nm and a zeta potential of -17.6 mV; also, MPt had a sponge-like and highly porous structure with a pore size <11 nm and a zeta potential of -39.5 mV. Both PtNPs and MPt, particularly the latter, enhanced the rate of inhibition of tumor cell growth on ultrasound radiation at an output power density of 1.0 W cm-2 and pulse ratio of 30% over 10 min without intensifying temperature.
CONCLUSION
Use of the developed pulsed (rather than continuous) radiation in SDT and PtNPs or MPT, without hyperthermia, resulted in a new effective cancer treatment method based on the mechanisms of cavitation and/or ROS generation.
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