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Li Y, Zheng T, Du Y, Zhao B, Patel HP, Boldt R, Auernhammer GK, Fery A, Li J, Thiele J. Titanium dioxide nanoparticles embedded in assembled dipeptide hydrogels for microfluidic photodegradation. J Colloid Interface Sci 2024; 654:405-412. [PMID: 37852026 DOI: 10.1016/j.jcis.2023.09.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/26/2023] [Accepted: 09/30/2023] [Indexed: 10/20/2023]
Abstract
Dipeptides can be self-assembled via non-covalent bonds towards functional nanostructures for diverse applications in nanotechnology. Here, we introduce a convenient microfluidics-guided dipeptide design as a platform for photodegradation of contaminants in water. Titanium dioxide (TiO2) nanoparticles (NPs) are chosen as photocatalysts due to their vastly studied properties. By using a well-defined microchannel architecture, the dipeptide N-fluorenylmethoxycarbonyl diphenylalanine (Fmoc-FF) and TiO2 NPs are efficiently mixed leading to a self-assembled Fmoc-FF hydrogel with embedded TiO2. Owing to shear-thinning and rapid self-healing of Fmoc-FF hydrogels, we can transfer and inject Fmoc-FF/TiO2 hydrogels into any other microdevice for specific applications, where these low-molecular-weight-gelator- (LMWG-)based Fmoc-FF hydrogels fill out the microchannel volume. Different morphologies of Fmoc-FF/TiO2 hydrogels are obtained by simple concentration screening of TiO2 NPs and Fmoc-FF. Owing to the density of the three-dimensionally twined Fmoc-FF nanofibers, solutions swelling the dipeptide hydrogel can be exchanged without leaching out TiO2 NPs. By further analysis, our hydrogel-filled flow cell can be employed for continuous-flow photodegradation in water under light irradiation. Especially, compared to the TiO2 NPs suspension, Fmoc-FF/TiO2 hydrogels with relatively low concentrations of TiO2 exhibit enhanced photodegradation capabilities due to better dispersion of nanoparticles. Such strategy provides a versatile platform for embedment of small inorganic catalysts or enzymes for (bio-)chemical conversion of solutes passing through the hydrogel network.
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Affiliation(s)
- Yue Li
- School of Life Sciences, Jilin University, 130012 Changchun, PR China; Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany.
| | - Tianfang Zheng
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, 130012 Changchun, PR China
| | - Yixuan Du
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | - Binyu Zhao
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | - Himanshu P Patel
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | - Regine Boldt
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | | | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, PR China.
| | - Julian Thiele
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany; Institute of Chemistry, Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany.
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Wang S, Zhou Q, Yu S, Zhao S, Shi J, Yuan J. Rod-like hybrid nanomaterial with tumor targeting and pH-responsive for cancer chemo/photothermal synergistic therapy. J Nanobiotechnology 2022; 20:332. [PMID: 35842723 PMCID: PMC9287864 DOI: 10.1186/s12951-022-01527-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/18/2022] [Indexed: 11/10/2022] Open
Abstract
The development of chemo/photothermal nanotherapeutic systems with excellent photothermal performance, stable drug loading, tumor targeting and strong membrane penetration still remains a challenge. To address this problem, herein a rod-like nanocomposite system (AuNR@FA-PR/PEG) forming from folic acid (FA) terminated carboxylated cyclodextrin (CD) pseudopolyrotaxane (FA-PR) and polyethylene glycol (PEG) modifying gold nanorods (AuNR) was reported. Cisplatin (CDDP) was loaded in AuNR@FA-PR/PEG via coordination bonds to prepare a rod-like pH-responsive nanosystem (AuNR@FA-PR/PEG/CDDP) with chemotherapy/photothermal therapy. The rod-like morphology of AuNR@FA-PR/PEG was characterized by transmission electron microscope. In vitro drug release experiments showed the pH-responsive of AuNR@FA-PR/PEG/CDDP. In vivo real-time imaging assays proved AuNR@FA-PR/PEG/CDDP could rapidly enrich in the tumor area and stay for a long time because of folate targeting and their rod-like morphology. In vivo photothermal imaging assays showed AuNR@FA-PR/PEG/CDDP excellent photothermal performance, the average temperature of tumor region could reach 63.5 °C after 10 min irradiation. In vitro and in vivo experiments also demonstrated that the combined therapy of chemotherapy and photothermal therapy had an outstandingly synergistic effect and improved the therapeutic efficacy comparing with chemotherapy and photothermal therapy alone. Therefore, the prepared rod-like AuNR@FA-PR/PEG/CDDP will provide a new strategy for the effective treatment of cancer.
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Affiliation(s)
- Shaochen Wang
- Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng, Henan, 475004, People's Republic of China
| | - Qiaoqiao Zhou
- Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng, Henan, 475004, People's Republic of China
| | - Shuling Yu
- Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng, Henan, 475004, People's Republic of China.
| | - Shuang Zhao
- Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng, Henan, 475004, People's Republic of China
| | - Jiahua Shi
- Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng, Henan, 475004, People's Republic of China.
| | - Jintao Yuan
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, People's Republic of China.
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