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Du J, Su J, Xing Y, Zhao Y, Tian M, Dai W, Dong H. Charge-Reversal NaCl/G-Quartets for Aggregation-Induced Mitochondrial MicroRNA Imaging and Ion-Interference Therapy. Anal Chem 2024; 96:5922-5930. [PMID: 38575388 DOI: 10.1021/acs.analchem.3c05977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Mitochondrial therapy is a promising new strategy that offers the potential to achieve precise disease diagnosis or maximum therapeutic response. However, versatile mitochondrial theranostic platforms that integrate biomarker detection and therapy have rarely been exploited. Here, we report a charge-reversal nanomedicine activated by an acidic microenvironment for mitochondrial microRNA (mitomiR) detection and ion-interference therapy. The transporter liposome (DD-DC) was constructed from a pH-responsive polymer and a positively charged phospholipid, encapsulating NaCl nanoparticles with coloading of the aggregation-induced emission (AIE) fluorogens AIEgen-DNA/G-quadruplexes precursor and brequinar (NAB@DD-DC). The negatively charged nanomedicine ensured good blood stability and high tumor accumulation, while the charge-reversal to positive in response to the acidic pH in the tumor microenvironment (TME) and lysosomes enhanced the uptake by tumor cells and lysosome escape, achieving accumulation in mitochondria. The subsequently released Na+ in mitochondria not only contributed to the formation of mitomiR-494 induced G-quadruplexes for AIE imaging diagnosis but also led to an osmolarity surge that was enhanced by brequinar to achieve effective ion-interference therapy.
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Affiliation(s)
- Jinya Du
- Marshall Laboratory of Biomedical Engineering, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Guangdong 518060, P. R. China
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemical and Bioengineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China
- Pharmaron-Beijing Co. Ltd., 6 Taihe Road, BDA, Beijing 100176, P. R. China
| | - Jiaxin Su
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemical and Bioengineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China
| | - Yi Xing
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemical and Bioengineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China
| | - Yanming Zhao
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemical and Bioengineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China
| | - Meng Tian
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemical and Bioengineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China
| | - Wenhao Dai
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemical and Bioengineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China
| | - Haifeng Dong
- Marshall Laboratory of Biomedical Engineering, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Guangdong 518060, P. R. China
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2
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Liu D, Liang M, Fan A, Bing W, Qi J. Hypoxia-responsive AIEgens for precise disease theranostics. LUMINESCENCE 2024; 39:e4659. [PMID: 38286609 DOI: 10.1002/bio.4659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/01/2023] [Accepted: 12/04/2023] [Indexed: 01/31/2024]
Abstract
Specific biomarker-activatable probes have revolutionized theranostics, being beneficial for precision medicine. Hypoxia is a critical pathological characteristic prevalent in numerous major diseases such as cancers, cardiovascular disorders, inflammatory diseases, and acute ischemia. Aggregation-induced emission luminogens (AIEgens) have emerged as a promising tool to tackle the biomedical issues. Of particular significance are the hypoxia-responsive AIEgens, representing a kind of crucial probe capable of delicately sensing and responding to the hypoxic microenvironment, thereby enhancing the precision of disease diagnosis and treatment. In this review, we summarize the recent advances of hypoxia-responsive AIEgens for varied biomedical applications. The hypoxia-responsive structures based on AIEgens, such as azobenzene, nitrobenzene, and N-oxide are presented, which are in response to the reduction property to bring about significant alternations in response spectra and/or fluorescence intensity. The bioapplications including imaging and therapy of tumor and ischemia diseases are discussed. Moreover, the review sheds light on the future challenges and prospects in this field. This review aims to provide comprehensive guidance and understanding into the development of activatable bioprobes, especially the hypoxia-responsive AIEgens for improving the diagnosis and therapy outcome of related diseases.
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Affiliation(s)
- Dongfang Liu
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, China
- School of Chemistry and Life Science, Changchun University of Technology, Changchun, China
| | - Mengyun Liang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Aohua Fan
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, China
- School of Chemistry and Life Science, Changchun University of Technology, Changchun, China
| | - Wei Bing
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, China
- School of Chemistry and Life Science, Changchun University of Technology, Changchun, China
| | - Ji Qi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
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3
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Yan Z, Liu Y, Zhao L, Hu J, Du Y, Peng X, Liu Z. In situ stimulus-responsive self-assembled nanomaterials for drug delivery and disease treatment. MATERIALS HORIZONS 2023; 10:3197-3217. [PMID: 37376926 DOI: 10.1039/d3mh00592e] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
The individual motifs that respond to specific stimuli for the self-assembly of nanomaterials play important roles. In situ constructed nanomaterials are formed spontaneously without human intervention and have promising applications in bioscience. However, due to the complex physiological environment of the human body, designing stimulus-responsive self-assembled nanomaterials in vivo is a challenging problem for researchers. In this article, we discuss the self-assembly principles of various nanomaterials in response to the tissue microenvironment, cell membrane, and intracellular stimuli. We propose the applications and advantages of in situ self-assembly in drug delivery and disease diagnosis and treatment, with a focus on in situ self-assembly at the lesion site, especially in cancer. Additionally, we introduce the significance of introducing exogenous stimulation to construct self-assembly in vivo. Based on this foundation, we put forward the prospects and possible challenges in the field of in situ self-assembly. This review uncovers the relationship between the structure and properties of in situ self-assembled nanomaterials and provides new ideas for innovative drug molecular design and development to solve the problems in the targeted delivery and precision medicine.
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Affiliation(s)
- Ziling Yan
- Department of Pharmaceutical Engineering, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P. R. China
| | - Yanfei Liu
- Department of Pharmaceutical Engineering, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P. R. China
| | - Licheng Zhao
- Department of Pharmaceutical Engineering, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P. R. China
| | - Jiaxin Hu
- Department of Pharmaceutics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan Province, P. R. China.
| | - Yimin Du
- Department of Pharmaceutics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan Province, P. R. China.
| | - Xingxing Peng
- Department of Pharmaceutics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan Province, P. R. China.
| | - Zhenbao Liu
- Department of Pharmaceutics, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan Province, P. R. China.
- Molecular Imaging Research Center of Central South University, Changsha 410008, Hunan Province, P. R. China
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4
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Lu Q, Yu H, Zhao T, Zhu G, Li X. Nanoparticles with transformable physicochemical properties for overcoming biological barriers. NANOSCALE 2023; 15:13202-13223. [PMID: 37526946 DOI: 10.1039/d3nr01332d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
In recent years, tremendous progress has been made in the development of nanomedicines for advanced therapeutics, yet their unsatisfactory targeting ability hinders the further application of nanomedicines. Nanomaterials undergo a series of processes, from intravenous injection to precise delivery at target sites. Each process faces different or even contradictory requirements for nanoparticles to pass through biological barriers. To overcome biological barriers, researchers have been developing nanomedicines with transformable physicochemical properties in recent years. Physicochemical transformability enables nanomedicines to responsively switch their physicochemical properties, including size, shape, surface charge, etc., thus enabling them to cross a series of biological barriers and achieve maximum delivery efficiency. In this review, we summarize recent developments in nanomedicines with transformable physicochemical properties. First, the biological dilemmas faced by nanomedicines are analyzed. Furthermore, the design and synthesis of nanomaterials with transformable physicochemical properties in terms of size, charge, and shape are summarized. Other switchable physicochemical parameters such as mobility, roughness and mechanical properties, which have been sought after most recently, are also discussed. Finally, the prospects and challenges for nanomedicines with transformable physicochemical properties are highlighted.
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Affiliation(s)
- Qianqian Lu
- Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials (2011-iChEM), Fudan University, Shanghai 200433, P. R. China.
| | - Hongyue Yu
- Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials (2011-iChEM), Fudan University, Shanghai 200433, P. R. China.
| | - Tiancong Zhao
- Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials (2011-iChEM), Fudan University, Shanghai 200433, P. R. China.
| | - Guanjia Zhu
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, P. R. China.
| | - Xiaomin Li
- Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials (2011-iChEM), Fudan University, Shanghai 200433, P. R. China.
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Li W, Zhang H, Zhai Z, Huang X, Shang S, Song Z. Fast and Reversible Photoresponsive Self-Assembly Behavior of Rosin-Based Amphiphilic Polymers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12885-12896. [PMID: 36175382 DOI: 10.1021/acs.jafc.2c04389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Designing stimulus-responsive amphiphilic polymers with a fast photoresponsive self-assembly behavior remains a challenge. Two series of rosin-terminated and azobenzene-terminated amphiphilic polymers (PAMn and PMAn) with fast and reversible photoresponsive properties were prepared using rosin-based azobenzene groups and polyethylene glycol, respectively. Under 5-10 s of UV irradiation, the polymers showed trans-to-cis isomerization and reached a photosteady state. For the PAMn polymer, the absorbance of the absorption peak at 325 nm recovered to more than 95% of the initial value under visible light for 5-10 s, whereas that of the PMAn polymer recovered completely. Notably, the PAMn and PMAn polymers initially self-assembled to vesicles or spherical micelles, and various morphological changes were achieved by manipulating UV irradiation time, with the initial morphology again recovered under dark conditions or visible-light irradiation. Remarkably, vesicles of the PAM34 and PMA34 polymers presented an intermediate open-vesicle state before being completely deformed under UV irradiation because of the existence of a π-π interaction. Finally, the ability of PAM34 and PMA34 polymer vesicles to perform the controlled release and reversible loading of a fluorescent probe was evaluated.
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Affiliation(s)
- Wanbing Li
- CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Institute of Chemical Industry of Forest Products, Nanjing, Jiangsu Province210042, P. R. China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Haibo Zhang
- CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Institute of Chemical Industry of Forest Products, Nanjing, Jiangsu Province210042, P. R. China
| | - Zhaolan Zhai
- CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Institute of Chemical Industry of Forest Products, Nanjing, Jiangsu Province210042, P. R. China
| | - Xujuan Huang
- School of Chemical and Chemistry, Yancheng Institute of Technology, Yancheng, Jiangsu Province210042, P. R. China
| | - Shibin Shang
- CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Institute of Chemical Industry of Forest Products, Nanjing, Jiangsu Province210042, P. R. China
| | - Zhanqian Song
- CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Institute of Chemical Industry of Forest Products, Nanjing, Jiangsu Province210042, P. R. China
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6
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Chowdhury P, Banerjee A, Saha B, Bauri K, De P. Stimuli-Responsive Aggregation-Induced Emission (AIE)-Active Polymers for Biomedical Applications. ACS Biomater Sci Eng 2022; 8:4207-4229. [PMID: 36054823 DOI: 10.1021/acsbiomaterials.2c00656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
At high concentration or in the aggregated state, most of the traditional luminophores suffer from the general aggregation-caused quenching (ACQ) effect, which significantly limits their biomedical applications. On the contrary, a few fluorophores exhibit an aggregation-induced emission (AIE) feature which is just the opposite of ACQ. The luminophores with aggregation-induced emission (AIEgens) have exhibited noteworthy advantages to get tunable emission, excellent photostability, and biocompatibility. Incorporating AIEgens into polymer design has yielded diversified polymer systems with fascinating photophysical characteristics. Again, stimuli-responsive polymers are capable of undergoing chemical and/or physical property changes on receiving signals from single or multiple stimuli. The combination of the AIE property and stimuli responses in a single polymer platform provides a feasible and effective strategy for the development of smart polymers with promising biomedical applications. Herein, the advancements in stimuli-responsive polymers with AIE characteristics for biomedical applications are summarized. AIE-active polymers are first categorized into conventional π-π conjugated and nonconventional fluorophore systems and then subdivided based on various stimuli, such as pH, redox, enzyme, reactive oxygen species (ROS), and temperature. In each section, the design strategies of the smart polymers and their biomedical applications, including bioimaging, cancer theranostics, gene delivery, and antimicrobial examples, are introduced. The current challenges and future perspectives of this field are also stated at the end of this review article.
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Affiliation(s)
- Pampa Chowdhury
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Arnab Banerjee
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Kamal Bauri
- Department of Chemistry, Raghunathpur College, Raghunathpur, 723133 Purulia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
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Wang QY, Yali-Xiang, Hu QH, Huang SH, Lin J, Zhou QH. Surface charge switchable nano-micelle for pH/redox-triggered and endosomal escape mediated co-delivery of doxorubicin and paclitaxel in treatment of lung adenocarcinoma. Colloids Surf B Biointerfaces 2022; 216:112588. [PMID: 35623260 DOI: 10.1016/j.colsurfb.2022.112588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 12/13/2022]
Abstract
Recently, the stimulus-sensitive drug co-delivery system has gained increasing attentions in the clinic and exhibits improved efficiency rather than the mono-chemotherapy in anti-tumor therapy. Herein, the smart charge switchable nano-micelles (NMs) were fabricated for the endosomal escape mediated co-delivery of doxorubicin (DOX) and paclitaxel (PTX) in treatment of lung adenocarcinoma. The disulfide bonds were facilitated as the linker of the polymer backbone to achieve the redox-sensitive degradation by high intracellular GSH, and acid-liable DMMA was grafted onto DOX molecules for pH-triggered drug release under acidic tumoral microenvironment. Folic acid (FA) was utilized as targeting molecule for facilitating entry of the as prepared NMs into cancer cells. Remarkably, the as fabricated NMs exhibited surface charge-switch from negative to positive during transmitting from physiological pH to the tumor extracellular pH, which can improve the cellular internalization towards cancer cell. Subsequently, the "proton-sponge" effect mediated endosome escape of the NMs was facilitated in the acidic endo/lysosome environment. By the cell assay, the NMs possessed good biocompatibility, excellent cellular uptake, and improved inhibition rate against cancer cell. Moreover, the co-delivery of DOX/PTX exhibited synergistic and enhanced solid tumor inhibition efficiency comparing to mono-chemotherapy in A-549 tumor bearing mice model. Based on above experimental results, the as prepared drug co-delivery system showed promising biosafety and potentials for efficient lung adenocarcinoma treatment in clinic.
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Affiliation(s)
- Qiu-Yue Wang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Yali-Xiang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Qiu-Hui Hu
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Shuang-Hui Huang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Juan Lin
- School of Biomedical Sciences and Technology, Chengdu Medical College, Xindu Road No.783, Chengdu, Sichuan 610500, China.
| | - Qing-Han Zhou
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China.
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8
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Ouyang J, Sun L, Zeng F, Wu S. Biomarker-activatable probes based on smart AIEgens for fluorescence and optoacoustic imaging. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214438] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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9
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Novel Near‐Infrared Fluorescent Nanoprobe Synthesized by the RAFT‐mediated PISA Strategy for Hypoxia‐Triggered Tumor Imaging and Azoreductase‐Responsive Drug Release. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Shao K, Zhang W, Shen J, He Y. Hypoxia-Activated Fluorescent Probe Based on Self-Immolative Block Copolymer. Macromol Biosci 2022; 22:e2100417. [PMID: 34981893 DOI: 10.1002/mabi.202100417] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/13/2021] [Indexed: 12/16/2022]
Abstract
This work reports a hypoxia-activated fluorescent probe for tumor imaging by using self-immolative block copolymer with azobenzene linkage. The water-soluble polymer composed of self-immolative building blocks shows no obvious fluorescence. Under the hypoxic microenvironment of tumor cells, the azobenzene is reduced by the overexpressed azoreductase, which will trigger a domino-like disassembly of the self-immolative polymer. The released building blocks from the self-immolative polymer emit strong fluorescence, which shows the potential application in tumor imaging.
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Affiliation(s)
- Kuanchun Shao
- Department of Chemical Engineering, Key Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing, 100084, China
| | - Wenlong Zhang
- Department of Chemical Engineering, Key Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing, 100084, China
| | - Jiajia Shen
- Department of Chemical Engineering, Key Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing, 100084, China
| | - Yaning He
- Department of Chemical Engineering, Key Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing, 100084, China
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Zheng M, Yuan J. Polymeric nanostructures based on azobenzene and their biomedical applications: synthesis, self-assembly and stimuli-responsiveness. Org Biomol Chem 2021; 20:749-767. [PMID: 34908082 DOI: 10.1039/d1ob01823j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Amphiphilic polymers can self-assemble to form nanoparticles with different structures under suitable conditions. Polymer nanoparticles functionalized with aromatic azo groups are endowed with photo-responsive properties. In recent years, a variety of photoresponsive polymers and nanoparticles have been developed based on azobenzene, using different molecular design strategies and synthetic routes. This article reviews the progress of this rapidly developing research field, focusing on the structure, synthesis, assembly and response of photo-responsive polymer assemblies. According to the molecular structure, photo-responsive polymers can be divided into linear polymers containing azobenzene in a side chain, linear polymers containing azobenzene in the main chain, linear polymers containing azobenzene in an end group, branched polymers containing azobenzene and supramolecular polymers containing azobenzene. These systems have broad biomedical application prospects in the field of drug delivery and imaging applications.
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Affiliation(s)
- Mingxin Zheng
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Jinying Yuan
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China.
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