Japanese Study: 2.45 GHz Microwaves Can Direct Peptides Toward Mitochondria Inside Living Cells

Microwave News highlights a study from Konan University (Japan) published in Scientific Reports showing that 2.45 GHz microwave irradiation can modulate the intracellular distribution of peptides, directing them toward mitochondria. Using fluorescent labeling to track the peptides, the researchers observed sequence-dependent changes in their distribution — and the cells remained alive and healthy throughout the experiments. The authors describe it as the first demonstration of using microwaves for delivering peptides conjugated with a signal sequence to the mitochondrial region, though the precise mechanisms remain unclear.

"To the best of our knowledge, this study is the first to demonstrate the potential of MW for delivering peptides conjugated with a signal sequence to the mitochondrial region."

— Kayamori et al.

"The precise mechanisms underlying these effects remain unclear."

— Kayamori et al.

"These future findings would suggest that MW-assisted peptide delivery can be developed as a more efficient strategy for mitochondrial targeting, thereby contributing to advances in peptide-based intracellular drug delivery systems."

— Kayamori et al.

"The system generated MWs at a frequency of 2450 ± 3 MHz using a semiconductor-type oscillator [...] Cell culture dishes were placed 35 mm above the antenna and irradiated with MWs [...] at 10 W for 30 min or 20 W for 5 min. [...] The measured E-field components were 355 V/m (x-axis), 1616 V/m (y-axis), and 211 V/m (z-axis). [...] It should be noted that the system output is controlled by irradiation duration rather than E-field strength. Therefore, the E-field intensity is expected to remain nearly constant even when the output power is increased to 20 W."

— Kayamori et al.

📄 Underlying Research

Microwave-induced modulation of intracellular distribution of peptides based on mitochondrial targeting sequences

Kayamori et al. (2026) Scientific Reports Journal Level Xⓘ

🔗 DOI 📚 PubMed

🇯🇵 Japanese Study: 2.45 GHz Microwaves Can Direct Peptides Toward Mitochondria Inside Living Cells

Source

📄 Underlying Research