PMID- 34952244 OWN - NLM STAT- MEDLINE DCOM- 20220223 LR - 20220223 IS - 1090-2120 (Electronic) IS - 0045-2068 (Linking) VI - 119 DP - 2022 Feb TI - H(2)O(2)-Responsive amphiphilic polymer with aggregation-induced emission (AIE) for DOX delivery and tumor therapy. PG - 105559 LID - S0045-2068(21)00937-8 [pii] LID - 10.1016/j.bioorg.2021.105559 [doi] AB - Stimuli-responsive drug delivery systems (DDSs) based on amphiphilic polymers have attracted much attention. In this study, we reported an innovative H(2)O(2)-responsive amphiphilic polymer (TBP), bearing a H(2)O(2)-sensitive phenylboronic ester, AIE fluorophore tetraphenylethene (TPE) hydrophobic, and polyethylene glycol hydrophilic (PEG) moieties. TBP could self-assemble into micelles with an encapsulation efficiency as high as 74.9% for doxorubicin (DOX) in aqueous solution. In the presence of H(2)O(2), TBP micelles was decomposed by oxidation, hydrolysis and rearrangement, leading to almost 80% DOX release from TBP@DOX micelles. TBP and the corresponding degradation products were biocompatible, while TBP@DOX micelles only displayed obvious toxicity toward cancer cells. Drug delivery process was clearly monitored by confocal laser scanning microscopic (CLSM) and flow cytometry (FCM) analysis. Moreover, in vivo anticancer study showed that TBP@DOX micelles were accumulated in tumor region of nude mice and effectively inhibited tumor growth. The results suggested that the reported H(2)O(2)-responsive amphiphilic polymer displayed great potential in drug delivery and tumor therapy. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Liang, Ya-Xuan AU - Liang YX AD - College of Chemistry, Beijing Normal University, Beijing 100875, PR China. FAU - Sun, Xue-Yi AU - Sun XY AD - College of Chemistry, Beijing Normal University, Beijing 100875, PR China. FAU - Xu, De-Zhong AU - Xu DZ AD - China National Institute for Food and Drug Control, Institute of Chemical Drug Control, TianTanXiLi 2, Beijing 100050, PR China. FAU - Huang, Jun-Ru AU - Huang JR AD - College of Medicine, China Pharmaceutical University, Nanjing 210009, PR China. FAU - Tang, Quan AU - Tang Q AD - College of Chemistry, Beijing Normal University, Beijing 100875, PR China. FAU - Lu, Zhong-Lin AU - Lu ZL AD - College of Chemistry, Beijing Normal University, Beijing 100875, PR China. Electronic address: luzl@bnu.edu.cn. FAU - Liu, Rui AU - Liu R AD - College of Chemistry, Beijing Normal University, Beijing 100875, PR China. Electronic address: rliu@bnu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211215 PL - United States TA - Bioorg Chem JT - Bioorganic chemistry JID - 1303703 RN - 0 (Antibiotics, Antineoplastic) RN - 0 (Polymers) RN - 0 (Protein Aggregates) RN - 0 (Surface-Active Agents) RN - 80168379AG (Doxorubicin) RN - BBX060AN9V (Hydrogen Peroxide) SB - IM MH - Animals MH - Antibiotics, Antineoplastic/chemistry/*pharmacology MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Dose-Response Relationship, Drug MH - Doxorubicin/chemistry/*pharmacology MH - *Drug Delivery Systems MH - Drug Liberation MH - Drug Screening Assays, Antitumor MH - Female MH - HEK293 Cells MH - HeLa Cells MH - Humans MH - Hydrogen Peroxide/*chemistry MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - Molecular Structure MH - Polymers/*chemistry MH - Protein Aggregates MH - Structure-Activity Relationship MH - Surface-Active Agents/*chemistry OTO - NOTNLM OT - Amphiphilic polymers OT - Drug delivery OT - H(2)O(2)-responsive OT - Tumor therapy EDAT- 2021/12/25 06:00 MHDA- 2022/02/24 06:00 CRDT- 2021/12/24 20:13 PHST- 2021/10/26 00:00 [received] PHST- 2021/12/04 00:00 [revised] PHST- 2021/12/11 00:00 [accepted] PHST- 2021/12/25 06:00 [pubmed] PHST- 2022/02/24 06:00 [medline] PHST- 2021/12/24 20:13 [entrez] AID - S0045-2068(21)00937-8 [pii] AID - 10.1016/j.bioorg.2021.105559 [doi] PST - ppublish SO - Bioorg Chem. 2022 Feb;119:105559. doi: 10.1016/j.bioorg.2021.105559. Epub 2021 Dec 15.