Researchers embedded a manganese-titanium metal-organic framework in polyacrylonitrile nanofibers to convert ultrasound into electrical stimulation. The composite generated a peak 0.24 V and, under ultrasound in RAW-Blue cells, activated NF-kB, TNF-alpha, IL-6, and transient calcium influx.
Key findings
- MT-MOF deformation and interfacial coupling with PAN enhanced charge separation and produced 0.24 V. Only the combined material-plus-ultrasound condition increased NF-kB, TNF-alpha, IL-6, and transient calcium, supporting a cell-level wireless stimulation mechanism.
Why this matters globally
Externally activated piezoelectric materials could avoid wired electrodes in deep tissue and enable localized immune modulation. Yet inflammation can support antitumor activity or damage tissue, so dose, timing, and spatial distribution require tight control.
Thai researcher contribution
A coauthor affiliated with Chulalongkorn University connected a Japanese biomaterials network with Thai pharmaceutical biochemistry and microbiology, although the experimental program was largely based in Japanese institutions.
Limitations to consider
Testing used a reporter cell line rather than tumor-associated macrophages. The abstract lacks cytotoxicity, full polarization markers, degradation, Mn/Ti leaching, ultrasound-heating, and animal data. Higher cytokines do not equal immunotherapy efficacy.
Verify the original sources
NanomaterialsRead the original article↗DOI: 10.3390/nano16140853