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Arsenene-mediated multiple independently targeted reactive oxygen species burst for cancer therapy
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Journal Article
Arsenene-mediated multiple independently targeted reactive oxygen species burst for cancer therapy
2021
Overview
The modulation of intracellular reactive oxygen species (ROS) levels is crucial for cellular homeostasis and determination of cellular fate. A sublethal level of ROS sustains cell proliferation, differentiation and promotes tumor metastasis, while a drastic ROS burst directly induces apoptosis. Herein, surface-oxidized arsenene nanosheets (As/As
x
O
y
NSs) with type II heterojunction are fabricated with efficient ·O
2
−
and
1
O
2
production and glutathione consumption through prolonging the lifetime of photo-excited electron-hole pairs. Moreover, the portion of As
x
O
y
with oxygen vacancies not only catalyzes a Fenton-like reaction, generating ·OH and O
2
from H
2
O
2
, but also inactivates main anti-oxidants to cut off the “retreat routes” of ROS. After polydopamine (PDA) and cancer cell membrane (M) coating, the engineered As/As
x
O
y
@PDA@M NSs serve as an intelligent theranostic platform with active tumor targeting and long-term blood circulation. Given its narrow-band-gap-enabled in vivo fluorescence imaging properties, As/As
x
O
y
@PDA@M NSs could be applied as an imaging-guided non-invasive and real-time nanomedicine for cancer therapy.
Multifunctional materials with a number of effects are important for dealing with the complex environment in cancer therapy. Here, the authors report on surface-oxidized arsenene nanosheets coated with polydopamine and cancer cell membrane as a multi theranostic tumour targeting cancer therapy.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 14
/ 59
/ Cancer
/ Holes (electron deficiencies)
/ Humanities and Social Sciences
/ Oxidants
/ Oxygen
/ Science
/ Therapy
/ Tumors
