Photosynthesis-inspired H2 generation using a chlorophyll-loaded liposomal nanoplatform to detect and scavenge excess ROS

Wei-Lin Wan, Bo Tian, Yu-Jung Lin, Chiranjeevi Korupalli, Ming-Yen Lu, Qinghua Cui, Dehui Wan, Yen Chang () and Hsing-Wen Sung ()
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Wei-Lin Wan: National Tsing Hua University
Bo Tian: National Tsing Hua University
Yu-Jung Lin: National Tsing Hua University
Chiranjeevi Korupalli: National Tsing Hua University
Ming-Yen Lu: National Tsing Hua University
Qinghua Cui: National Tsing Hua University
Dehui Wan: National Tsing Hua University
Yen Chang: Tzu Chi University
Hsing-Wen Sung: National Tsing Hua University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract A disturbance of reactive oxygen species (ROS) homeostasis may cause the pathogenesis of many diseases. Inspired by natural photosynthesis, this work proposes a photo-driven H2-evolving liposomal nanoplatform (Lip NP) that comprises an upconversion nanoparticle (UCNP) that is conjugated with gold nanoparticles (AuNPs) via a ROS-responsive linker, which is encapsulated inside the liposomal system in which the lipid bilayer embeds chlorophyll a (Chla). The UCNP functions as a transducer, converting NIR light into upconversion luminescence for simultaneous imaging and therapy in situ. Functioning as light-harvesting antennas, AuNPs are used to detect the local concentration of ROS for FRET biosensing, while the Chla activates the photosynthesis of H2 gas to scavenge local excess ROS. The results thus obtained indicate the potential of using the Lip NPs in the analysis of biological tissues, restoring their ROS homeostasis, possibly preventing the initiation and progression of diseases.

Date: 2020
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DOI: 10.1038/s41467-020-14413-x

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