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Luo J, Zhang C, Wu M, Yao X, Duan Y, Li Y. Excitation/emission-enhanced heterostructure photonic crystal array synergizing with "DD-A" FRET entropy-driven circuit for high-resolution and ultrasensitive analysis of ctDNA. Biosens Bioelectron 2024; 263:116615. [PMID: 39106690 DOI: 10.1016/j.bios.2024.116615] [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: 05/25/2024] [Revised: 07/21/2024] [Accepted: 07/29/2024] [Indexed: 08/09/2024]
Abstract
Circulating tumor DNA (ctDNA) is an emerging biomarker of liquid biopsy for cancer. But it remains a challenge to achieve simple, sensitive and specific detection of ctDNA because of low abundance and single-base mutation. In this work, an excitation/emission-enhanced heterostructure photonic crystal (PC) array synergizing with entropy-driven circuit (EDC) was developed for high-resolution and ultrasensitive analysis of ctDNA. The donor donor-acceptor FÖrster resonance energy transfer ("DD-A" FRET) was integrated in EDC based on the introduction of simple auxiliary strand, which exhibited higher sensitivity than that of traditional EDC. The heterostructure PC array was constructed with the bilayer periodic nanostructures of nanospheres. Because the heterostructure PC has the adjustable dual photonic band gaps (PBGs) by changing nanosphere sizes, and the "DD-A" FRET can offer the excitation and emission peak with enough distance, it helps the successful matches between the dual PBGs of heterostructure PC and the excitation/emission peaks of "DD-A" FRET; thus, the fluorescence from EDC can be enhanced effectively from both of excitation and emission processes on heterostructure PC array. Besides, high-resolution of single-base mutation was obtained through the strict recognition of EDC. Benefiting from the specific spectrum-matched and synergetic amplification of heterostructure PC and EDC with "DD-A" FRET, the proposed array obtained ultrasensitive detection of ctDNA with LOD of 12.9 fM, and achieved the analysis of mutation frequency as low as 0.01%. Therefore, the proposed strategy has the advantages of simple operation, mild conditions (enzyme-free and isothermal), high-sensitivity, high-resolution and high-throughput analysis, showing potential in bioassay and clinical application.
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Affiliation(s)
- Jie Luo
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Chuyan Zhang
- Precision Medicine Translational Research Center, Medical Equipment Innovation Research Center, Med-X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Mengfan Wu
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Xiuyuan Yao
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Yixiang Duan
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Yongxin Li
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China.
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Hu Q, Du Y, Bai Y, Xing D, Wu C, Li K, Lang S, Liu X, Liu G. Smart zwitterionic coatings with precise pH-responsive antibacterial functions for bone implants to combat bacterial infections. Biomater Sci 2024; 12:4471-4482. [PMID: 39058335 DOI: 10.1039/d4bm00932k] [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: 07/28/2024]
Abstract
Hydrophilic antifouling coatings based on zwitterionic polymers have been widely applied for the surface modification of bone implants to combat biofilm formation and reduce the likelihood of implant-related infections. However, their long-term effectiveness is significantly limited by the lack of effective and precise antibacterial activity. Here, a pH-responsive smart zwitterionic antibacterial coating (PSB/GS coating) was designed and robustly fabricated onto titanium-base bone implants by using a facile two-step method. First, dopamine (DA) and a poly(sulfobetaine methacrylate-co-dopamine methacrylamide) (PSBDA) copolymer were deposited on implants via mussel-inspired surface chemistry, resulting in a hydrophilic base coating with abundant catechol residues. Next, an amino-rich antibiotic, gentamicin sulfate (GS), was covalently linked to the coating through the formation of acid-sensitive Schiff base bonds between the amine groups of GS and the catechol residues present in both the zwitterionic polymer and the DA component. During the initial implantation period, the hydrophilic zwitterionic polymers demonstrated the desired anti-fouling properties that could effectively reduce protein and bacterial adhesion by over 90%. With time, the bacterial proliferation led to a decrease in the microenvironment pH value, resulting in the hydrolysis of the acid-sensitive Schiff base bonds, thereby releasing GS on demand and effectively enhancing the anti-biofilm properties of coatings. Benefiting from this synergistic antifouling and smart antibacterial activities, the PSB/GS coating exerted an excellent anti-infective activity in both in vivo preoperative and postoperative infection rat models. This proposed facile yet effective coating strategy is expected to provide a promising solution to combat bone implant-related infections.
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Affiliation(s)
- Qinsheng Hu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Department of Orthopedic Surgery, Ya'an People's Hospital, Ya'an 625000, China
| | - Yangrui Du
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Yangjing Bai
- West China School of Nursing, Sichuan University/Department of Cardiovascular Surgery, West China Hospital, Sichuan University, China
| | - Dandan Xing
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Chengcheng Wu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Kaijun Li
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Shiying Lang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Xiaoyan Liu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, China.
| | - Gongyan Liu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
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Yan Z, Zhang R, Qiao M, Ma M, Liu T, Ding L, Fang Y. Single-Probe-Based Sensor Array for Fingerprint Recognition of Trivalent Metal Ions and Application in Water Identification. Anal Chem 2024. [PMID: 39152896 DOI: 10.1021/acs.analchem.4c01287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2024]
Abstract
Abnormal concentration levels of trivalent metal ions (M3+) might hinder their natural biological activities in physiological processes and cause severe health hazards. Herein, a dual-chromophore probe (RhB-TPE) composed of rhodamine and tetraphenylethene (TPE) units was synthesized and explored for discriminating M3+ ions. It exhibited special aggregation and AIE properties in aqueous media. Its ensemble with anionic surfactant SDBS assemblies (RhB-TPE/SDBS) could be utilized as fluorescent sensors for selective and sensitive detection of M3+ ions such as Fe3+, Al3+, and Cr3+ by illustrating quenched TPE emission and switched-on rhodamine emission. Moreover, the use of SDBS assemblies at two concentrations could provide a single-probe-based sensor array and realize four-signal pattern recognition of different concentrations of the three M3+ ions and identify M3+ mixtures or unknown samples. The cross-reactive fluorescence variation was attributed to the M3+ influence on the FRET process from TPE to open-ring form rhodamine in the two ensemble sensors. With the coexistence of Al3+, the optimized RhB-TPE/SDBS ensemble sensor array was successfully applied to differentiate commercially available brand mineral water and purified water, as well as tap water. The present work provides a novel strategy to generate a single-probe-based sensor array and realizes fingerprint recognition of three trivalent metal ions and efficient discrimination of different types of water. The modulation FRET process of a dual chromophore in different surfactant ensembles inspires the future construction of novel and effective sensing platforms.
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Affiliation(s)
- Zhen Yan
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Rongrong Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Min Qiao
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Miao Ma
- School of Computer Science, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Liping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
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Li N, Chen Z, Zhan Y, Deng W, Lv T, Xu Z, Wang L, Liu B. Anti-cancer drug axitinib: a unique tautomerism-induced dual-emissive probe for protein analysis. Chem Commun (Camb) 2024; 60:6138-6141. [PMID: 38804199 DOI: 10.1039/d4cc01944j] [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: 05/29/2024]
Abstract
A commercial anti-cancer drug, axitinib, exhibits very stable dual emissions for discrimination of human serum albumin.
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Affiliation(s)
- Na Li
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
| | - Zihao Chen
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
| | - Yilin Zhan
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
| | - Weihua Deng
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
| | - Taoyuze Lv
- School of Physics, The University of Sydney, NSW 2006, Australia
| | - Zhongyong Xu
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
| | - Lei Wang
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
| | - Bin Liu
- College of Material Science and Engineering, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen University, Shenzhen 518060, PR China.
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Su M, Yin M, Zhou Y, Xiao S, Yi J, Tang R. Freeze-Thaw Microfluidic System Produces "Themis" Nanocomplex for Cleaning Persisters-Infected Macrophages and Enhancing Uninfected Macrophages. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311436. [PMID: 38181783 DOI: 10.1002/adma.202311436] [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: 10/31/2023] [Revised: 01/01/2024] [Indexed: 01/07/2024]
Abstract
Macrophages are the primary effectors against potential pathogen infections. They can be "parasitized" by intracellular bacteria, serving as "accomplices", protecting intracellular bacteria and even switching them to persisters. Here, using a freeze-thaw strategy-based microfluidic chip, a "Themis" nanocomplex (TNC) is created. The TNC consists of Lactobacillus reuteri-derived membrane vesicles, heme, and vancomycin, which cleaned infected macrophages and enhanced uninfected macrophages. In infected macrophages, TNC releases heme that led to the reconstruction of the respiratory chain complexes of intracellular persisters, forcing them to regrow. The revived bacteria produces virulence factors that destroyed host macrophages (accomplices), thereby being externalized and becoming vulnerable to immune responses. In uninfected macrophages, TNC upregulates the TCA cycle and oxidative phosphorylation (OXPHOS), contributing to immunoenhancement. The combined effect of TNC of cleaning the accomplice (infected macrophages) and reinforcing uninfected macrophages provides a promising strategy for intracellular bacterial therapy.
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Affiliation(s)
- Mingyue Su
- School of stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Mengying Yin
- School of stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Yifu Zhou
- School of stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Shuya Xiao
- School of stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Jundan Yi
- School of stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Rongbing Tang
- School of stomatology, Lanzhou University, Lanzhou, 730000, China
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Li J, Zhang S, He C, Ling J. Electrospun fibers based anisotropic silk fibroin film with photodynamic antibacterial therapy for S. aureus infected wound healing. Int J Biol Macromol 2024; 254:127685. [PMID: 38287584 DOI: 10.1016/j.ijbiomac.2023.127685] [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: 09/25/2023] [Accepted: 10/24/2023] [Indexed: 01/31/2024]
Abstract
Bacterial infection has been regarded as a life-threatening problem in clinic. In addition to screening of new antibiotics, it is important to develop highly effective antibacterial materials against antibiotic resistance with capacities on modulating chronic inflammation. Herein, aligned Chlorin e6 (Ce6) conjugated silk fibroin electrospun fibers were successfully fabricated on silk fibroin based film via electrospining to achieve effective photodynamic antibacterial activities under near infrared (NIR) irradiation. The aligned electrospun fiber based film composite (SFCF@Film) exhibited good mechanical properties and desirable hemocompatibility. SFCF@Film provided a promising guidance cue for directing cell orientation and promoting cell growth. Significantly, SFCF@Film effectively generated ROS under NIR irradiation to kill S. aureus for treating wound infections within 10 min and promoted M2 polarization of macrophages for wound healing at later stage. Therefore, we believed that this engineered bioscaffold can be a powerful strategy for handling wound infection.
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Affiliation(s)
- Jiaying Li
- Hospital-Acquired Infection Control Department, Nantong Third People's Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong, China
| | - Shuxuan Zhang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Chang He
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Jue Ling
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China.
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Zhou L, Wang Z, Wang L, Zhang X, Xiao Y. Tetrazine-Based Ratiometric Nitric Oxide Sensor Identifies Endogenous Nitric Oxide in Atherosclerosis Plaques by Riding Macrophages as a Smart Vehicle. J Am Chem Soc 2023; 145:28296-28306. [PMID: 38090812 DOI: 10.1021/jacs.3c12181] [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: 12/28/2023]
Abstract
Atherosclerosis (AS) is the formation of plaques in blood vessels, which leads to serious cardiovascular diseases. Current research has disclosed that the formation of AS plaques is highly related to the foaming of macrophages. However, there is a lack of detailed molecular biological mechanisms. We proposed a "live sensor" by grafting a tetrazine-based ratiometric NO probe within macrophages through metabolic and bio-orthogonal labeling. This "live sensor" was proved to target the AS plaques with a diameter of only tens of micrometers specifically and visualized endogenous NO at two lesion stages in the AS mouse model. The ratiometric signals from the probe confirmed the participation of NO during AS and indicated that the generation of endogenous NO increased significantly as the lesion progressed. Our proposal of this "live sensor" provided a native and smart strategy to target and deliver small molecular probes to the AS plaques at the in vivo level, which can be used as universal platforms for the detection of reactive molecules or microenvironmental factors in AS.
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Affiliation(s)
- Lin Zhou
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zehui Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Lai Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xinfu Zhang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yi Xiao
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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