Hydrogen Peroxide-Triggered Disassembly of Boronic Ester-Cross-Linked Brush-Arm Star Polymers.
Hydrogen Peroxide-Triggered Disassembly of Boronic Ester-Cross-Linked Brush-Arm Star Polymers.
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过氧化氢触发的硼酯连锁刷臂聚合物的拆卸。
DOI:
10.1021/acsmacrolett.3c00323
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发表时间:
2023-08-15
影响因子:
7.015
通讯作者:
Johnson, Jeremiah A.
中科院分区:
文献类型:
--
作者:
Costa, Leticia C.;Shieh, Peyton;Zafar, Hadiqa;Thiabaud, Gregory;Bobylev, Eduard O.;Jasanoff, Alan;Johnson, Jeremiah A.
The concentrations of reactive oxygen species (ROS), e.g., H2O2, are often elevated in disease tissue microenvironments. Therefore, selective detection of ROS could enable new diagnostic methods or tools for chemical biology. Here, we report the synthesis of boronic ester-bis-norbornene core-crosslinked brush-arm star polymers (BASP) with polyethylene glycol (PEG) or PEG-branch-spirocyclohexyl nitroxide (chex) shells. Size exclusion chromatography and dynamic light scattering showed that these BASPs have narrowly dispersed molar masses and average hydrodynamic diameters of 23 ± 2 nm. Moreover, due to their core-shell structures where the boronic ester crosslinks are buried in a hydrophobic core, these BASPs disassemble into bottlebrush fragments with improved selectivity for H2O2 over charged ROS species such as peroxynitrite (ONOO–) and hypochlorite (−OCl). Finally, H2O2 induced disassembly of chex-containing BASPs induces a change in transverse magnetic relaxivity that is detectable via magnetic resonance imaging (MRI). Chex-BASPs could represent a valuable new diagnostic tool for H2O2 sensing.
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影响因子:
7.4
作者:
Reuter, Simone;Gupta, Subash C.;Chaturvedi, Madan M.;Aggarwal, Bharat B.
通讯作者:
Aggarwal, Bharat B.
影响因子:
7.015
作者:
Gao AX;Liao L;Johnson JA
通讯作者:
Johnson JA
影响因子:
--
作者:
Achilli, Cesare;Ciana, Annarita;Minetti, Giampaolo
通讯作者:
Minetti, Giampaolo
影响因子:
18.2
作者:
Nguyen HV;Chen Q;Paletta JT;Harvey P;Jiang Y;Zhang H;Boska MD;Ottaviani MF;Jasanoff A;Rajca A;Johnson JA
通讯作者:
Johnson JA
影响因子:
1.6
作者:
Bernardini, Raffaella;Oliva, Ambrogio;Goldoni, Luca
通讯作者:
Goldoni, Luca