1
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Wen X, Zhang C, Tian Y, Miao Y, Liu S, Xu JJ, Ye D, He J. Smart Molecular Imaging and Theranostic Probes by Enzymatic Molecular In Situ Self-Assembly. JACS AU 2024; 4:2426-2450. [PMID: 39055152 PMCID: PMC11267545 DOI: 10.1021/jacsau.4c00392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/15/2024] [Accepted: 06/18/2024] [Indexed: 07/27/2024]
Abstract
Enzymatic molecular in situ self-assembly (E-MISA) that enables the synthesis of high-order nanostructures from synthetic small molecules inside a living subject has emerged as a promising strategy for molecular imaging and theranostics. This strategy leverages the catalytic activity of an enzyme to trigger probe substrate conversion and assembly in situ, permitting prolonging retention and congregating many molecules of probes in the targeted cells or tissues. Enhanced imaging signals or therapeutic functions can be achieved by responding to a specific enzyme. This E-MISA strategy has been successfully applied for the development of enzyme-activated smart molecular imaging or theranostic probes for in vivo applications. In this Perspective, we discuss the general principle of controlling in situ self-assembly of synthetic small molecules by an enzyme and then discuss the applications for the construction of "smart" imaging and theranostic probes against cancers and bacteria. Finally, we discuss the current challenges and perspectives in utilizing the E-MISA strategy for disease diagnoses and therapies, particularly for clinical translation.
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Affiliation(s)
- Xidan Wen
- Department
of Nuclear Medicine, Nanjing Drum Tower Hospital, Affiliated Hospital
of Medical School, Nanjing University, Nanjing 210008, China
- State
Key Laboratory of Analytical Chemistry for Life Science, Chemistry
and Biomedicine Innovation Center (ChemBIC), School of Chemistry and
Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Chao Zhang
- Department
of Neurosurgery, Zhujiang Hospital, Southern
Medical University, Guangzhou 510282, China
| | - Yuyang Tian
- State
Key Laboratory of Analytical Chemistry for Life Science, Chemistry
and Biomedicine Innovation Center (ChemBIC), School of Chemistry and
Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Yinxing Miao
- State
Key Laboratory of Analytical Chemistry for Life Science, Chemistry
and Biomedicine Innovation Center (ChemBIC), School of Chemistry and
Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Shaohai Liu
- State
Key Laboratory of Analytical Chemistry for Life Science, Chemistry
and Biomedicine Innovation Center (ChemBIC), School of Chemistry and
Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Jing-Juan Xu
- State
Key Laboratory of Analytical Chemistry for Life Science, Chemistry
and Biomedicine Innovation Center (ChemBIC), School of Chemistry and
Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Deju Ye
- State
Key Laboratory of Analytical Chemistry for Life Science, Chemistry
and Biomedicine Innovation Center (ChemBIC), School of Chemistry and
Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Jian He
- Department
of Nuclear Medicine, Nanjing Drum Tower Hospital, Affiliated Hospital
of Medical School, Nanjing University, Nanjing 210008, China
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2
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Kim S, Lee Y, Seu MS, Sim Y, Ryu JH. Enzyme-instructed intramitochondrial polymerization for enhanced anticancer treatment without the development of drug-resistance. J Control Release 2024; 373:189-200. [PMID: 39002798 DOI: 10.1016/j.jconrel.2024.07.029] [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: 04/19/2024] [Revised: 07/07/2024] [Accepted: 07/10/2024] [Indexed: 07/15/2024]
Abstract
Intracellular polymerization in living cells motivated chemists to generate polymeric structures with a multitude of possibilities to interact with biomacromolecules. However, out-of-control of the intracellular chemical reactions would be an obstacle restricting its application, providing the toxicity of non-targeted cells. Here, we reported intracellular thioesterase-mediated polymerization for selectively occurring polymerization using disulfide bonds in cancer cells. The acetylated monomers did not form disulfide bonds even under an oxidative environment, but they could polymerize into the polymeric structure after cleavage of acetyl groups only when encountered activity of thioesterase enzyme. Furthermore, acetylated monomers could be self-assembled with doxorubicin, providing doxorubicin loaded micelles for efficient intracellular delivery of drug and monomers. Since thioesterase enzymes were overexpressed in cancer cells specifically, the micelles were disrupted under activity of the enzyme and the polymerization could occur selectively in the cancer mitochondria. The resulting polymeric structures disrupted the mitochondrial membrane, thus activating the cellular death of cancer cells with high selectivity. This strategy selectively targets diverse cancer cells involving drug-resistant cells over normal cells. Moreover, the mitochondria targeting strategy overcomes the development of drug resistance even with repeated treatment. This approach provides a way for selective intracellular polymerization with desirable anticancer treatment.
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Affiliation(s)
- Sangpil Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeji Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min-Seok Seu
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Youjung Sim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Ja-Hyoung Ryu
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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3
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Zhuang J, Qi G, Feng Y, Wu M, Zhang H, Wang D, Zhang X, Chong KC, Li B, Liu S, Tian J, Shan Y, Mao D, Liu B. Thymoquinone as an electron transfer mediator to convert Type II photosensitizers to Type I photosensitizers. Nat Commun 2024; 15:4943. [PMID: 38858372 PMCID: PMC11164902 DOI: 10.1038/s41467-024-49311-z] [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: 09/13/2023] [Accepted: 05/31/2024] [Indexed: 06/12/2024] Open
Abstract
The development of Type I photosensitizers (PSs) is of great importance due to the inherent hypoxic intolerance of photodynamic therapy (PDT) in the hypoxic microenvironment. Compared to Type II PSs, Type I PSs are less reported due to the absence of a general molecular design strategy. Herein, we report that the combination of typical Type II PS and natural substrate carvacrol (CA) can significantly facilitate the Type I pathway to efficiently generate superoxide radical (O2-•). Detailed mechanism study suggests that CA is activated into thymoquinone (TQ) by local singlet oxygen generated from the PS upon light irradiation. With TQ as an efficient electron transfer mediator, it promotes the conversion of O2 to O2-• by PS via electron transfer-based Type I pathway. Notably, three classical Type II PSs are employed to demonstrate the universality of the proposed approach. The Type I PDT against S. aureus has been demonstrated under hypoxic conditions in vitro. Furthermore, this coupled photodynamic agent exhibits significant bactericidal activity with an antibacterial rate of 99.6% for the bacterial-infection female mice in the in vivo experiments. Here, we show a simple, effective, and universal method to endow traditional Type II PSs with hypoxic tolerance.
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Affiliation(s)
- Jiahao Zhuang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Guobin Qi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Yecheng Feng
- Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou, China
| | - Min Wu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China
| | - Hang Zhang
- Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore
| | - Dandan Wang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Xianhe Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Kok Chan Chong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Bowen Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Shitai Liu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Jianwu Tian
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Yi Shan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Duo Mao
- Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou, China.
| | - Bin Liu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China.
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore.
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4
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Tian J, Li B, Wu C, Li Z, Tang H, Song W, Qi GB, Tang Y, Ping Y, Liu B. Programmable Singlet Oxygen Battery for Automated Photodynamic Therapy Enabled by Pyridone-Pyridine Tautomer Engineering. J Am Chem Soc 2024. [PMID: 38753624 DOI: 10.1021/jacs.4c02500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
The efficacy of photodynamic therapy is hindered by the hypoxic environment in tumors and limited light penetration depth. The singlet oxygen battery (SOB) has emerged as a promising solution, enabling oxygen- and light-independent 1O2 release. However, conventional SOB systems typically exhibit an "always-ON" 1O2 release, leading to potential 1O2 leakage before and after treatment. This not only compromises therapeutic outcomes but also raises substantial biosafety concerns. In this work, we introduce a programmable singlet oxygen battery, engineered to address all the issues discussed above. The concept is illustrated through the development of a tumor-microenvironment-responsive pyridone-pyridine switch, PyAce, which exists in two tautomeric forms: PyAce-0 (pyridine) and PyAce (pyridone) with different 1O2 storage half-lives. In its native state, PyAce remains in the pyridone form, capable of storing 1O2 (t1/2 = 18.5 h). Upon reaching the tumor microenvironment, PyAce is switched to the pyridine form, facilitating rapid and thorough 1O2 release (t1/2 = 16 min), followed by quenched 1O2 release post-therapy. This mechanism ensures suppressed 1O2 production pre- and post-therapy with selective and rapid 1O2 release at the tumor site, maximizing therapeutic efficacy while minimizing side effects. The achieved "OFF-ON-OFF" 1O2 therapy showed high spatiotemporal selectivity and was independent of the oxygen supply and light illumination.
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Affiliation(s)
- Jianwu Tian
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 1, Singapore 117585, Singapore
| | - Bowen Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 1, Singapore 117585, Singapore
| | - Chongzhi Wu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhiyao Li
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Honglin Tang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wentao Song
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 1, Singapore 117585, Singapore
| | - Guo-Bin Qi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 1, Singapore 117585, Singapore
| | - Yufu Tang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 1, Singapore 117585, Singapore
| | - Yuan Ping
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 1, Singapore 117585, Singapore
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5
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Zhi S, Huang M, Cheng K. Enzyme-responsive design combined with photodynamic therapy for cancer treatment. Drug Discov Today 2024; 29:103965. [PMID: 38552778 DOI: 10.1016/j.drudis.2024.103965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/09/2024] [Accepted: 03/22/2024] [Indexed: 04/07/2024]
Abstract
Photodynamic therapy (PDT) is a noninvasive cancer treatment that has garnered significant attention in recent years. However, its application is still hampered by certain limitations, such as the hydrophobicity and low targeting of photosensitizers (PSs) and the hypoxia of the tumor microenvironment. Nevertheless, the fusion of enzyme-responsive drugs with PDT offers novel solutions to overcome these challenges. Utilizing the attributes of enzyme-responsive drugs, PDT can deliver PSs to the target site and selectively release them, thereby enhancing therapeutic outcomes. In this review, we spotlight recent advances in enzyme-responsive materials for cancer treatment and primarily delineate their application in combination with PDT.
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Affiliation(s)
- Siying Zhi
- Guangdong Provincial Key Laboratory of New Drug Screening and NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Meixin Huang
- Guangdong Provincial Key Laboratory of New Drug Screening and NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Kui Cheng
- Guangdong Provincial Key Laboratory of New Drug Screening and NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
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6
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Li Q, Ming R, Huang L, Zhang R. Versatile Peptide-Based Nanosystems for Photodynamic Therapy. Pharmaceutics 2024; 16:218. [PMID: 38399272 PMCID: PMC10892956 DOI: 10.3390/pharmaceutics16020218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Photodynamic therapy (PDT) has become an important therapeutic strategy because it is highly controllable, effective, and does not cause drug resistance. Moreover, precise delivery of photosensitizers to tumor lesions can greatly reduce the amount of drug administered and optimize therapeutic outcomes. As alternatives to protein antibodies, peptides have been applied as useful targeting ligands for targeted biomedical imaging, drug delivery and PDT. In addition, other functionalities of peptides such as stimuli responsiveness, self-assembly, and therapeutic activity can be integrated with photosensitizers to yield versatile peptide-based nanosystems for PDT. In this article, we start with a brief introduction to PDT and peptide-based nanosystems, followed by more detailed descriptions about the structure, property, and architecture of peptides as background information. Finally, the most recent advances in peptide-based nanosystems for PDT are emphasized and summarized according to the functionalities of peptide in the system to reveal the design and development principle in different therapeutic circumstances. We hope this review could provide useful insights and valuable reference for the development of peptide-based nanosystems for PDT.
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Affiliation(s)
- Qiuyan Li
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Ruiqi Ming
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Lili Huang
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Ruoyu Zhang
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
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7
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Qi G, Liu X, Shi L, Zhuang J, Liu B. Targeted Depletion of Individual Pathogen by Bacteria-Templated Polymer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307940. [PMID: 37921569 DOI: 10.1002/adma.202307940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/27/2023] [Indexed: 11/04/2023]
Abstract
Selective and targeted removal of individual species or strains of bacteria from complex communities can be desirable over traditional and broadly acting antibiotics in several conditions. However, strategies that can detect and ablate bacteria with high specificity are emerging in recent years. Herein, a platform is reported that uses bacteria as a template to synthesize polymers containing guanidinium groups for self-selective depletion of specific pathogenic bacteria without disturbing microbial communities. Different from conventional antibiotics, repeated treatment of bacteria with the templated polymers does not evolve drug resistance mutants after 20 days of serial passaging. Especially, high in vivo therapeutic effectiveness of the templated polymers is achieved in E. coli- and P. aeruginosa-induced microbial peritonitis. The templated polymers have shown high selectivity in in vivo antimicrobial activity, which has excellent potential as systemic antimicrobials against bacterial infections.
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Affiliation(s)
- Guobin Qi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Xianglong Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
| | - Leilei Shi
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201600, China
| | - Jiahao Zhuang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
- Institute for Functional Intelligent Materials, National University of Singapore, Blk S9, Level 9, 4 Science Drive 2, Singapore, 117544, Singapore
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8
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Qi G, Tang Y, Shi L, Zhuang J, Liu X, Liu B. Capsule Shedding and Membrane Binding Enhanced Photodynamic Killing of Gram-Negative Bacteria by a Unimolecular Conjugated Polyelectrolyte. NANO LETTERS 2023; 23:10374-10382. [PMID: 37921703 DOI: 10.1021/acs.nanolett.3c02965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
The development of new antimicrobial agents to treat infections caused by Gram-negative bacteria is of paramount importance due to increased antibiotic resistance worldwide. Herein, we show that a water-soluble porphyrin-cored hyperbranched conjugated polyelectrolyte (PorHP) exhibits high photodynamic bactericidal activity against the Gram-negative bacteria tested, including a multidrug-resistant (MDR) pathogen, while demonstrating low cytotoxicity toward mammalian cells. Comprehensive analyses reveal that the antimicrobial activity of PorHP proceeds via a multimodal mechanism by effective bacterial capsule shedding, strong bacterial outer membrane binding, and singlet oxygen generation. Through this multimodal antimicrobial mechanism, PorHP displays significant performance for Gram-negative bacteria with >99.9% photodynamic killing efficacy. Overall, PorHP shows great potential as an antimicrobial agent in fighting the growing threat of Gram-negative bacteria.
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Affiliation(s)
- Guobin Qi
- Department of Chemical and Biomolecular Engineering, National University of Singapore (Singapore), 4 Engineering Drive 4, Singapore 117585
| | - Yufu Tang
- Department of Chemical and Biomolecular Engineering, National University of Singapore (Singapore), 4 Engineering Drive 4, Singapore 117585
| | - Leilei Shi
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
| | - Jiahao Zhuang
- Department of Chemical and Biomolecular Engineering, National University of Singapore (Singapore), 4 Engineering Drive 4, Singapore 117585
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University (Fuzhou, China), Binhai New City, Fuzhou 350207, China
| | - Xianglong Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore (Singapore), 4 Engineering Drive 4, Singapore 117585
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University (Fuzhou, China), Binhai New City, Fuzhou 350207, China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore (Singapore), 4 Engineering Drive 4, Singapore 117585
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University (Fuzhou, China), Binhai New City, Fuzhou 350207, China
- Institute for Functional Intelligent Materials, National University of Singapore (Singapore), Blk S9, Level 9, 4 Science Drive 2, Singapore 117544
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9
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Tian J, Li B, Zhang F, Yao Z, Song W, Tang Y, Ping Y, Liu B. Activatable Type I Photosensitizer with Quenched Photosensitization Pre and Post Photodynamic Therapy. Angew Chem Int Ed Engl 2023; 62:e202307288. [PMID: 37681940 DOI: 10.1002/anie.202307288] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/09/2023]
Abstract
The phototoxicity of photosensitizers (PSs) pre and post photodynamic therapy (PDT), and the hypoxic tumor microenvironment are two major problems limiting the application of PDT. While activatable PSs can successfully address the PS phototoxicity pre PDT, and type I PS can generate reactive oxygen species (ROS) effectively in hypoxic environment, very limited approaches are available for addressing the phototoxicity post PDT. There is virtually no solution available to address all these issues using a single design. Herein, we propose a proof-of-concept on-demand switchable photosensitizer with quenched photosensitization pre and post PDT, which could be activated only in tumor hypoxic environment. Particularly, a hypoxia-normoxia cycling responsive type I PS TPFN-AzoCF3 was designed to demonstrate the concept, which was further formulated into TPFN-AzoCF3 nanoparticles (NPs) using DSPE-PEG-2000 as the encapsulation matrix. The NPs could be activated only in hypoxic tumors to generate type I ROS during PDT treatment, but remain non-toxic in normal tissues, pre or after PDT, thus minimizing side effects and improving the therapeutic effect. With promising results in in vitro and in vivo tumor treatment, this presented strategy will pave the way for the design of more on-demand switchable photosensitizers with minimized side effects in the future.
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Affiliation(s)
- Jianwu Tian
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 5 A Engineering Drive 1, Singapore, 117411, Singapore
| | - Bowen Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 5 A Engineering Drive 1, Singapore, 117411, Singapore
| | - Fu Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhuo Yao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wentao Song
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 5 A Engineering Drive 1, Singapore, 117411, Singapore
| | - Yufu Tang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 5 A Engineering Drive 1, Singapore, 117411, Singapore
| | - Yuan Ping
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 5 A Engineering Drive 1, Singapore, 117411, Singapore
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10
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Xu HB, Chen HY, Lv J, Chen BB, Zhou ZR, Chang S, Gao YT, Huang WF, Ye MJ, Cheng ZJ, Hafez ME, Qian RC, Li DW. Schiff Base Reaction in a Living Cell: In Situ Synthesis of a Hollow Covalent Organic Polymer To Regulate Biological Functions. Angew Chem Int Ed Engl 2023; 62:e202311002. [PMID: 37714815 DOI: 10.1002/anie.202311002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/01/2023] [Accepted: 09/15/2023] [Indexed: 09/17/2023]
Abstract
Artificially performing chemical reactions in living biosystems to attain various physiological aims remains an intriguing but very challenging task. In this study, the Schiff base reaction was conducted in cells using Sc(OTf)3 as a catalyst, enabling the in situ synthesis of a hollow covalent organic polymer (HCOP) without external stimuli. The reversible Schiff base reaction mediated intracellular Oswald ripening endows the HCOP with a spherical, hollow porous structure and a large specific surface area. The intracellularly generated HCOP reduced cellular motility by restraining actin polymerization, which consequently induced mitochondrial deactivation, apoptosis, and necroptosis. The presented intracellular synthesis system inspired by the Schiff base reaction has strong potential to regulate cell fate and biological functions, opening up a new strategic possibility for intervening in cellular behavior.
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Affiliation(s)
- Han-Bin Xu
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Hua-Ying Chen
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Jian Lv
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Bin-Bin Chen
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen City, Guangdong, 518172, P. R. China
| | - Ze-Rui Zhou
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Shuai Chang
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Ya-Ting Gao
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Wen-Fei Huang
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Ming-Jie Ye
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Zi-Jian Cheng
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Mahmoud Elsayed Hafez
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Ruo-Can Qian
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Da-Wei Li
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
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11
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Wu H, Fang Y, Tian L, Liu X, Zhou X, Chen X, Gao H, Qin H, Liu Y. AIE Nanozyme-Based Long Persistent Chemiluminescence and Fluorescence for POCT of Pathogenic Bacteria. ACS Sens 2023; 8:3205-3214. [PMID: 37552936 DOI: 10.1021/acssensors.3c00918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Pathogenic bacteria are widely distributed in diverse environments and significantly threaten human health. Point-of-care testing (POCT) is a valuable way for early warnings of bacteria threat. Herein, a chemiluminescence (CL)-based ratiometric sensing platform was constructed for sensitive POCT of bacteria according to a newly designed aggregation-induced emission (AIE) molecule. The new AIE molecule presents oxidase-like properties (named as AIEzyme) and can trigger long persistent CL of luminol (LUM) with strong intensity in the absence of H2O2. The CL emission can be monitored with the naked eye for over 2 h. The emission mechanism is explored and may be attributed to the persistent reactive oxygen species generation of the AIEzyme according to the cyclic energy transfer between the AIEzyme and luminol, which catalyzes CL of luminol. Based on the CL resonance energy transfer mechanism, an afterglow luminescence system is further developed, which is used to construct a ratiometric biosensor for detection of pathogenic bacteria. With a homemade holder as a detection room and a smartphone as an analyzer, the portable biosensing platform is used for quantitative POCT of bacteria in real samples with good recovery. The detection is free of H2O2 and an external excitation source, which not only simplifies the operation but reduces interference. Specifically, the long persistent luminescence and the ratiometric strategy can significantly improve accuracy, providing an instructive way for point-of-need analysis, for example, SARS-CoV-2 detection and bioimaging analysis.
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Affiliation(s)
- Haotian Wu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yuan Fang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Li Tian
- China Resources Biopharmaceutical Co., Ltd., Beijing 100120, China
| | - Xin Liu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiao Zhou
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiying Chen
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Heqi Gao
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen 518060, China
| | - Haijuan Qin
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yaqing Liu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
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12
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Liu C, Xianyu B, Dai Y, Pan S, Li T, Xu H. Intracellular Hyperbranched Polymerization for Circumventing Cancer Drug Resistance. ACS NANO 2023. [PMID: 37285408 DOI: 10.1021/acsnano.3c03512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polymerization inside living cells provides chemists with a multitude of possibilities to modulate cell activities. Considering the advantages of hyperbranched polymers, such as a large surface area for target sites and multilevel branched structures for resistance to the efflux effect, we reported a hyperbranched polymerization in living cells based on the oxidative polymerization of organotellurides and intracellular redox environment. The intracellular hyperbranched polymerization was triggered by reactive oxygen species (ROS) in the intracellular redox microenvironment, effectively disrupting antioxidant systems in cells by an interaction between Te (+4) and selenoproteins, thus inducing selective apoptosis of cancer cells. Importantly, the obtained hyperbranched polymer aggregated into branched nanostructures in cells, which could effectively evade drug pumps and decrease drug efflux, ensuring the polymerization for persistent treatment. Finally, in vitro and in vivo studies confirmed that our strategy presented selective anticancer efficacy and well biosafety. This approach provides a way for intracellular polymerization with desirable biological applications to regulate cell activities.
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Affiliation(s)
- Chengfei Liu
- Key Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry, Tsinghua University, Beijing 100084, China
- Tsinghua-Peking Joint Center for Life Sciences, Beijing 100084, China
| | - Banruo Xianyu
- Key Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yiheng Dai
- Key Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Shuojiong Pan
- Key Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Tianyu Li
- Department of Biomedical Engineering, Columbia University, New York, New York 10032, United States
| | - Huaping Xu
- Key Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry, Tsinghua University, Beijing 100084, China
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13
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Zmudzinski M, Malon O, Poręba M, Drąg M. Imaging of proteases using activity-based probes. Curr Opin Chem Biol 2023; 74:102299. [PMID: 37031620 DOI: 10.1016/j.cbpa.2023.102299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/24/2023] [Accepted: 03/08/2023] [Indexed: 04/11/2023]
Abstract
Proteases (proteolytic enzymes) are proteins that catalyze one of the most important biochemical reactions, namely the hydrolysis of the peptide bond in peptide and protein substrates. Therefore these molecular biocatalysts participate in virtually all living processes. The proper balance between intact and processed protease substrates enables to maintenance of homeostasis from a single-cell level to the whole living system. However, when the proteolytic activity is altered, this delicate balance is disturbed, which might lead to the development of a plethora of diseases. Given this, monitoring proteolytic activity is indispensable to understanding how proteases operate in disease lesions and how their altered catalytic activity might be harnessed for a better diagnosis and treatment. In this manuscript, we provide a critical review of the recent development of protease chemical probes which are small molecules that detect proteolytic activity by interacting with protease active site, individual proteases as well as complex proteolytic networks.
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Affiliation(s)
- Mikolaj Zmudzinski
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland
| | - Oliwia Malon
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland
| | - Marcin Poręba
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland.
| | - Marcin Drąg
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland.
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14
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Zheng Z, Yuan L, Hu JJ, Xia F, Lou X. Modular Peptide Probe for Protein Analysis. Chemistry 2023; 29:e202203225. [PMID: 36333271 DOI: 10.1002/chem.202203225] [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: 10/15/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 11/07/2022]
Abstract
The analysis and regulation of proteins are of great significance for the development of disease diagnosis and treatment. However, complicated analytical environment and complex protein structure severely limit the accuracy of their analysis results. Nowadays, ascribing to the editability and bioactivity of peptides, peptide-based probes could meet the requirements of good selectivity and high affinity to overcome the challenges. In this review, we summarize the advances in the use of modular peptide probes for proteins analysis. It focuses on how to design and optimize the structure of probes, as well as their performance. Then, the strategies and application to improve the analysis result of modular peptide probes are introduced. Finally, we also discuss current challenge and provide some ideas for the future direction for modular peptide probes, hoping to accelerate their clinical transformation.
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Affiliation(s)
- Zhi Zheng
- State Key Laboratory of Biogeology and Environmental Geology Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Lizhen Yuan
- State Key Laboratory of Biogeology and Environmental Geology Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Jing-Jing Hu
- State Key Laboratory of Biogeology and Environmental Geology Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Xiaoding Lou
- State Key Laboratory of Biogeology and Environmental Geology Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
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15
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Shi Y, Zhu D, Wang D, Liu B, Du X, Wei G, Zhou X. Recent advances of smart AIEgens for photoacoustic imaging and phototherapy. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214725] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Xu Y, Wang H, Qiao Z. Precise Control of Self‐Assembly in Vivo Based on Polymer‐Peptide Conjugates. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yin‐Sheng Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100190 China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100190 China
| | - Zeng‐Ying Qiao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100190 China
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17
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Zhang NY, Hu XJ, An HW, Liang JX, Wang H. Programmable design and self assembly of peptide conjugated AIEgens for biomedical applications. Biomaterials 2022; 287:121655. [PMID: 35810541 DOI: 10.1016/j.biomaterials.2022.121655] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 11/28/2022]
Abstract
Aggregation-induced emission luminogens (AIEgens) possess enhanced fluorescence in highly aggregated states, thus enabling AIEgens as a promising module for highly emissive fluorescence biomaterials. So far, AIEgens-based nanomaterials and their hybrids have been reported for biomedical applications. Benefiting from the intrinsic biocompatibility and biofunction-editing properties of peptides, peptide-AIEgens hybrid biomaterials reveal unlimited possibilities including target capacity, specificity, stimuli-responsiveness, self-assembly, controllable structural transformation, etc.. In the last two decades, peptide-AIEgens hybrid nanomaterials with a unique design concept in aggregated states have achieved various biomedical applications such as biosensing, bioimaging, imaging-guided surgery, drug delivery and therapy. More recently, programmable design of peptide-AIEgens for in situ self-assembly provides a unique strategy for constructing intelligent entities with defined biological functions. In this review, we summarize the basic design principle of programmable peptide-AIEgens, structure-effect relationship and their unusual biomedical effects. Finally, an outlook and perspective toward future challenges and developments of peptide-AIEgens nanomaterials are concluded.
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Affiliation(s)
- Ni-Yuan Zhang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, 100190, Beijing, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Xing-Jie Hu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, 100190, Beijing, China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China
| | - Hong-Wei An
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, 100190, Beijing, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Jian-Xiao Liang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, 100190, Beijing, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, 100190, Beijing, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China.
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18
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Macdougall LJ, Hoffman TE, Kirkpatrick BE, Fairbanks BD, Bowman CN, Spencer SL, Anseth KS. Intracellular Crowding by Bio-Orthogonal Hydrogel Formation Induces Reversible Molecular Stasis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202882. [PMID: 35671709 PMCID: PMC9377388 DOI: 10.1002/adma.202202882] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/19/2022] [Indexed: 05/22/2023]
Abstract
To survive extreme conditions, certain animals enter a reversible protective stasis through vitrification of the cytosol by polymeric molecules such as proteins and polysaccharides. In this work, synthetic gelation of the cytosol in living cells is used to induce reversible molecular stasis. Through the sequential lipofectamine-mediated transfection of complementary poly(ethylene glycol) macromers into mammalian cells, intracellular crosslinking occurs through bio-orthogonal strain-promoted azide-alkyne cycloaddition click reactions. This achieves efficient polymer uptake with minimal cell death (99% viable). Intracellular crosslinking decreases DNA replication and protein synthesis, and increases the quiescent population by 2.5-fold. Real-time tracking of single cells containing intracellular crosslinked polymers identifies increases in intermitotic time (15 h vs 19 h) and decreases in motility (30 µm h-1 vs 15 µm h-1 ). The cytosol viscosity increases threefold after intracellular crosslinking and results in disordered cytoskeletal structure in addition to the disruption of cellular coordination in a scratch assay. By incorporating photodegradable nitrobenzyl moieties into the polymer backbone, the effects of intracellular crosslinking are reversed upon exposure to light, thereby restoring proliferation (80% phospho-Rb+ cells), protein translation, and migration. Reversible intracellular crosslinking provides a novel method for dynamic manipulation of intracellular mechanics, altering essential processes that determine cellular function.
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Affiliation(s)
- Laura J Macdougall
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Timothy E Hoffman
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Bruce E Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado, Aurora, CO, 80045, USA
| | - Benjamin D Fairbanks
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- Material Science and Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Christopher N Bowman
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Material Science and Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Sabrina L Spencer
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Material Science and Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
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19
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Hu R, Wang J, Qin A, Tang BZ. Aggregation-Induced Emission-Active Biomacromolecules: Progress, Challenges, and Opportunities. Biomacromolecules 2022; 23:2185-2196. [PMID: 35171563 DOI: 10.1021/acs.biomac.1c01516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biomacromolecules featuring aggregation-induced-emission (AIE) characteristics generally present new properties and performances that are silent in the molecular state, providing endless possibilities for the evolution of biomedical applications. Tremendous achievements based on the research of AIE-active biomacromolecules have been made in synthetic exploration, material development, and practical applications. In this Perspective, we give a brief account in the development of AIE-active biomacromolecules. Remarkable progresses have been made in the exploration of AIE-active biomacromolecule preparation, structure-property relationships, and the relevant biomedical applications. The existing challenges and promising opportunities, as well as the future directions in AIE-active biomacromolecule research, are also discussed. It is expected that this Perspective can act as a trigger for the innovation of AIE-active biomacromolecule research and aggregate science.
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Affiliation(s)
- Rong Hu
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, AIE Institute, Center for Aggregation-Induced Emission, South China University of Technology, 510641 Guangzhou, China.,School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jia Wang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, AIE Institute, Center for Aggregation-Induced Emission, South China University of Technology, 510641 Guangzhou, China
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, AIE Institute, Center for Aggregation-Induced Emission, South China University of Technology, 510641 Guangzhou, China
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, AIE Institute, Center for Aggregation-Induced Emission, South China University of Technology, 510641 Guangzhou, China.,Shenzhen Institute of Aggregate Science and Technology, School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 2001 Longxiang Boulevard, Longgang District, Shenzhen City 518172, Guangdong, China.,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
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