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Ferdinandus, Suzuki M, Vu CQ, Harada Y, Sarker SR, Ishiwata S, Kitaguchi T, Arai S. Modulation of Local Cellular Activities using a Photothermal Dye-Based Subcellular-Sized Heat Spot. ACS NANO 2022; 16:9004-9018. [PMID: 35675905 PMCID: PMC9245347 DOI: 10.1021/acsnano.2c00285] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/19/2022] [Indexed: 08/25/2023]
Abstract
Thermal engineering at the microscale, such as the regulation and precise evaluation of the temperature within cellular environments, is a major challenge for basic biological research and biomaterials development. We engineered a polymeric nanoparticle having a fluorescent temperature sensory dye and a photothermal dye embedded in the polymer matrix, named nanoheater-thermometer (nanoHT). When nanoHT is illuminated with a near-infrared laser at 808 nm, a subcellular-sized heat spot is generated in a live cell. Fluorescence thermometry allows the temperature increment to be read out concurrently at individual heat spots. Within a few seconds of an increase in temperature by approximately 11.4 °C from the base temperature (37 °C), we observed the death of HeLa cells. The cell death was observed to be triggered from the exact local heat spot at the subcellular level under the fluorescence microscope. Furthermore, we demonstrate the application of nanoHT for the induction of muscle contraction in C2C12 myotubes by heat release. We successfully showed heat-induced contraction to occur in a limited area of a single myotube based on the alteration of protein-protein interactions related to the contraction event. These results demonstrate that even a single heat spot provided by a photothermal material can be extremely effective in altering cellular functions.
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Affiliation(s)
- Ferdinandus
- Waseda
Bioscience Research Institute in Singapore (WABIOS), Singapore 138667, Singapore
| | - Madoka Suzuki
- Institute
for Protein Research, Osaka University, 3-2 Yamadaoka,
Suita, Osaka 565-0871, Japan
| | - Cong Quang Vu
- Nano
Life Science Institute (WPI-NanoLSI), Kanazawa
University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Yoshie Harada
- Institute
for Protein Research, Osaka University, 3-2 Yamadaoka,
Suita, Osaka 565-0871, Japan
- Center
for Quantum Information and Quantum Biology, Osaka University, Osaka 565-0871, Japan
| | - Satya Ranjan Sarker
- Nano
Life Science Institute (WPI-NanoLSI), Kanazawa
University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Shin’ichi Ishiwata
- Department
of Physics, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Tetsuya Kitaguchi
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa 226-8503, Japan
| | - Satoshi Arai
- Nano
Life Science Institute (WPI-NanoLSI), Kanazawa
University, Kakuma-machi, Kanazawa, 920-1192, Japan
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