PMID- 32766661 OWN - NLM STAT- MEDLINE DCOM- 20210326 LR - 20211204 IS - 2050-7518 (Electronic) IS - 2050-750X (Linking) VI - 8 IP - 35 DP - 2020 Sep 21 TI - Photo-triggered release of doxorubicin from liposomes formulated by amphiphilic phthalocyanines for combination therapy to enhance antitumor efficacy. PG - 8022-8036 LID - 10.1039/d0tb01093f [doi] AB - Multidrug combination therapy based on drug delivery systems (DDSs) has great potential for cancer treatment. Stimuli-sensitive DDSs further enhance therapeutic efficacy by providing controllable drug delivery. Herein, the phospholipid compound DPPC (1,2-dipalmitoyl-sn-glycero-3-phosphocholine) was used to construct thermosensitive liposomes to load the photosensitizer ZnPc(PEG)(4) (zinc phthalocyanine substituted by tetraethylene glycol) for molecular imaging, and photodynamic and photothermal therapy, together with doxorubicin (DOX) for chemotherapy. Interestingly, ZnPc(PEG)(4) as an amphipathic molecule was found to be important in the construction of the liposomes, and it provided liposomes with improved stability. The thus-obtained liposomes ZnPc(PEG)(4):DOX@LiPOs were demonstrated to have enhanced ROS production capacity, heat generation properties and a photo-triggered doxorubicin release effect, and, in cellular experiments, increased cytotoxicity and apoptotic cell proportions, compared to ZnPc(PEG)(4)@LiPOs and DOX@LiPOs. ZnPc(PEG)(4) loaded in lipid bilayers showed stronger intracellular ROS production ability compared to free ZnPc(PEG)(4). In vivo studies indicated that ZnPc(PEG)(4):DOX@LiPOs exhibited enhanced tumor accumulation, increased anti-cancer effects and reduced liver retention. These photo-triggered liposomes constructed by the photosensitizer ZnPc(PEG)(4) can also be used to package other cargo for combined target tumor therapy and molecular imaging. FAU - Zheng, Ke AU - Zheng K AD - Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Chemical Engineering College, Qingdao University of Science and Technology, Qingdao 266042, China. zhengke@qust.edu.cn dingcaifeng@qust.edu.cn. FAU - Liu, Hongyan AU - Liu H FAU - Liu, Xinxin AU - Liu X FAU - Jiang, Libin AU - Jiang L FAU - Li, Linlin AU - Li L FAU - Wu, Xianggen AU - Wu X FAU - Guo, Nannan AU - Guo N FAU - Ding, Caifeng AU - Ding C FAU - Huang, Mingdong AU - Huang M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200807 PL - England TA - J Mater Chem B JT - Journal of materials chemistry. B JID - 101598493 RN - 0 (Antineoplastic Agents) RN - 0 (Indoles) RN - 0 (Isoindoles) RN - 0 (Liposomes) RN - 0 (Reactive Oxygen Species) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 80168379AG (Doxorubicin) RN - V5PUF4VLGY (phthalocyanine) SB - IM MH - Antineoplastic Agents/*administration & dosage/*chemistry/pharmacology MH - Antineoplastic Combined Chemotherapy Protocols MH - Cell Line, Tumor MH - Doxorubicin/*administration & dosage/*chemistry/pharmacology MH - Humans MH - *Hydrophobic and Hydrophilic Interactions MH - Indoles/*chemistry MH - Isoindoles MH - *Light MH - Liposomes MH - Polyethylene Glycols/chemistry MH - Reactive Oxygen Species/metabolism EDAT- 2020/08/09 06:00 MHDA- 2021/03/27 06:00 CRDT- 2020/08/09 06:00 PHST- 2020/08/09 06:00 [pubmed] PHST- 2021/03/27 06:00 [medline] PHST- 2020/08/09 06:00 [entrez] AID - 10.1039/d0tb01093f [doi] PST - ppublish SO - J Mater Chem B. 2020 Sep 21;8(35):8022-8036. doi: 10.1039/d0tb01093f. Epub 2020 Aug 7.