4.8 Article

Strong Penetration-Induced Effective Photothermal Therapy by Exosome-Mediated Black Phosphorus Quantum Dots

Journal

SMALL
Volume 17, Issue 49, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202104585

Keywords

black phosphorus quantum dots; electroporation; exosomes; NIR; organoids; photothermal therapy

Funding

  1. National Natural Science Foundation of China [12025503, U1932134, U1867215]
  2. Hubei Provincial Natural Science Foundation [2019CFA036]
  3. Fundamental Research Funds for the Central Universities [2042020kf0211]

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By packaging black phosphorus quantum dots into exosome vectors, the intratumoral distribution issue of nanocancer medicine has been effectively addressed, leading to significantly improved efficiency and tumor killing ability of photothermal therapy.
Nanocancer medicine, such as photothermal therapy (PTT), as a promising way to solve cancer without side effects, faces a huge biological barrier during the circulation of nanoparticles in the body, including nanobiological interactions in the blood, isolation of nanoparticles in the macrophage system, tumor spillover effect, and especially uneven intratumoral distribution of nanoparticles, which cast a shadow over the hope. To address the problem of intratumoral distribution, an effective photothermal agent is introduced by packaging the black phosphorus quantum dots (BPQDs) into exosome vector (EXO) through electroporation method. With the improving and proper stability for better therapy, the resulting BPQDs@EXO nanospheres (BEs) exhibit good biocompatibility, long circulation time, and excellent tumor targeting ability, hence impressive PTT efficiency evidenced by highly efficient tumor ablation in vivo. Importantly, great permeability on organoids contributed by EXO appears with BEs, which strongly promotes the efficient killing ability. These BP-based nanospheres must promise high clinical potential due to the high PTT efficiency and minimal side effects.

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