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Ge J, Wang Z, Deng Y, Ding F, Wang J, Shen X, Zhang C, Wang C, Hu L, Wang H. Near-infrared lipid droplets polarity fluorescent probe for early diagnosis of nonalcoholic fatty liver disease. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124479. [PMID: 38772178 DOI: 10.1016/j.saa.2024.124479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/04/2024] [Accepted: 05/17/2024] [Indexed: 05/23/2024]
Abstract
Nowadays, it has been proven that lipid droplets (LDs) not only maintain the fundamental cellular functions, but also play an essential role in the pathogenesis of numerous diseases. Non-alcoholic fatty liver disease (NAFLD) is among these diseases. In this work, we designed two polarity sensitive fluorescent probes TST and TSO with D-π-A-D structure by introducing different electron acceptor groups according to the low polarity of LDs. The experimental discovered that probe TST exhibited the characteristics of near-infrared emission, high selectivity towards polarity, large Stokes shift, rapid targeting ability of LDs, and robust wash-free biological imaging capability. Confocal images illustrated that probe TST has been successfully applied in monitoring LDs polarity during ferroptosis, as well as visualizing changes in LDs polarity at both tissue and organ levels in fatty liver conditions. With these exceptional properties, probe TST was anticipated to make further contributions to the field of LDs research.
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Affiliation(s)
- Jiayi Ge
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Zhiyu Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Yi Deng
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Feiyang Ding
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Jie Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Xuebin Shen
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Cuifeng Zhang
- School of Anesthesiology, Wannan Medical College, Wuhu 241002, China
| | - Chunfei Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
| | - Lei Hu
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
| | - Hui Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu 241002, China; School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
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2
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Li S, Hong J, Xia X, Duan L, Yang W, Xiong J, Yin X, Hong Y. A rapid near-infrared turn on fluorescence probe for the detection of sulfite in food and its application in biological imaging. Talanta 2024; 278:126445. [PMID: 38908139 DOI: 10.1016/j.talanta.2024.126445] [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: 04/01/2024] [Revised: 06/12/2024] [Accepted: 06/17/2024] [Indexed: 06/24/2024]
Abstract
A near-infrared fluorescent "turn on" probe DTMI featuring simple skeleton was constructed easily. It undergoes a structure transformation from an A-π-A to a D-π-A framework towards SO32-. Besides, DTMI is capable of distinctive sensing sulfite with a fast response and a significant Stokes shift as well as with high sensitivity, excellent selectivity, long-term stability of fluorescence signals, and good anti-interference ability. The detection limit (LOD) of DTMI for sulfite within the linear concentration range of 0.5-10 μM is 27.39 nM. More importantly, DTMI has been favorably utilized for detecting sulfite in food samples such as red wine and vermicelli. Based on its low biotoxicity, DTMI has been successfully applied in imaging experiments involving HeLa cells, onion inner epidermal cells, and zebrafish. Therefore, the results show that the presented probe possesses potential sensing activity towards sulfite in complex biological system and food samples.
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Affiliation(s)
- Shufei Li
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jiaxin Hong
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Xinyu Xia
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Luying Duan
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wuying Yang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jianhua Xiong
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xiaoli Yin
- Liarbry of Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yanping Hong
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engneering, Jiangxi Agricultural University, Nanchang, 330045, China.
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Jin C, Cao Z, Zhu HL, Li Z. γ-Glutamyltranspeptidase fluorescence lifetime response probe for precision tumor detection unveiling A549 cancer cell specificity. Biosens Bioelectron 2024; 261:116484. [PMID: 38878698 DOI: 10.1016/j.bios.2024.116484] [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: 04/01/2024] [Revised: 05/24/2024] [Accepted: 06/06/2024] [Indexed: 07/02/2024]
Abstract
γ-Glutamyltranspeptidase (γ-GGT), as a key enzyme, exhibits markedly higher expression levels in tumor cells compared to normal cells. Under normal conditions, γ-GGT activity on the cell membrane is relatively low, but it undergoes a significant upregulation in cancer cells, making it a potential cancer biomarker. Particularly in A549 cells, a prominent cancer cell line, the pronounced upregulation of γ-GGT expression emphasizes its potential as a unique recognition target and a robust marker for A549 cells. This study successfully synthesized a highly selective γ-GGT fluorescent probe, the exhibits commendable sensitivity (LOD = 0.0021U/mL) and selectivity, achieving efficient detection at the cellular level and providing accurate insights into differential expression between normal and cancer cells. The alterations in fluorescence lifetime observed before and after the probe's reaction with γ-GGT serve as a crucial foundation for fluorescence lifetime imaging on living cells. The probe has become a powerful tool for precise localization of tumor cells, particularly demonstrating its capability for specific recognition in A549 cells. Overall, this research highlights the potential of γ-GGT as a target for fluorescent probes, emphasizing its prospects in specific recognition, particularly in A549 cells, with profound implications for advancing early cancer diagnosis and treatment methods.
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Affiliation(s)
- Chen Jin
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, No.163 Xianlin Avenue, Nanjing, 210023, China
| | - Zhijia Cao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, No.163 Xianlin Avenue, Nanjing, 210023, China
| | - Hai-Liang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, No.163 Xianlin Avenue, Nanjing, 210023, China
| | - Zhen Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, No.163 Xianlin Avenue, Nanjing, 210023, China.
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4
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Wang Y, Yang J, Wang J, Zhang S, Tang F, Chen J, Ding A, Hu L, Wang H. Lipid droplets-specific fluorescent probe for wash-free imaging and in vivo diagnosis of non-alcoholic fatty liver disease. Mikrochim Acta 2024; 191:532. [PMID: 39134779 DOI: 10.1007/s00604-024-06613-9] [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: 06/07/2024] [Accepted: 08/05/2024] [Indexed: 08/15/2024]
Abstract
Lipid droplets (LDs) dysfunction is closely associated with a multitude of diseases, including nonalcoholic fatty liver disease (NAFLD). Therefore, it is imperative to develop fluorescent probes that specifically target LDs for the early detection and diagnosis of NAFLD. In this study, a series of lipophilic fluorophores CZ1-CZ4 that feature a D-π-A configuration were designed and synthesized based on the carbazole and tricocyanofuran derivatives. The photophysical data revealed that all four probes exhibited large Stokes shifts (~ 120 nm) in high-polarity solvents (e.g., DMSO) and demonstrated enhanced fluorescence in solvents ranging from low-polarity (e.g., 1,4-Dioxane) to high-polarity. Notably, by utilizing probe CZ1, we could specifically visualize LDs and captured high-quality images, even eliminating the need for a time-consuming wash procedure. Moreover, CZ1 enabled monitoring of LDs dynamic changes in-real time within live cells, and importantly, it could be used to effectively distinguish normal and NAFLD tissues at both the organ and in vivo level. This exceptional property of probe CZ1 provides a practical tool for the diagnosis and intervention of NAFLD.
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Affiliation(s)
- Yuqing Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Jing Yang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Jie Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Sichen Zhang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Fang Tang
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
| | - Jiexia Chen
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China
| | - Aixiang Ding
- Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, 909 S Wolcott Ave, Chicago, IL, 60612, USA.
| | - Lei Hu
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China.
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China.
| | - Hui Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China.
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China.
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Chen S, Liu T, Yuan X, Zhou L. Construction of an effective near-infrared fluorescence "turn-on" probe for hydrogen sulfide detection and imaging in living inflammatory cell and zebrafish models. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 323:124863. [PMID: 39068845 DOI: 10.1016/j.saa.2024.124863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/13/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Hydrogen sulfide (H2S) can act as a gaseous signaling mediator closely associated with inflammation development. In this work, we designed a fluorescence turn-on near-infrared (NIR) fluorescent probe CIT-H2S based on Intermolecular Charge Transfer (ICT) for the detection of H2S in living inflammatory cells and zebrafish. On this basis, a dicyanoisophorone fluorophore was chosen as the fluorescence signal reporting group of CIT-H2S, and an azide group was constructed as the recognition group of H2S. CIT-H2S is characterized by high selectivity and sensitivity for H2S over other interference species. The fluorescence intensity at 661 nm showed good linearity in the range of H2S concentration from 0 to 10 μM, with an excellent limit of detection (LOD) as low as 81.52 nM. Impressively, CIT-H2S has been visualized for detecting H2S in drug-induced inflammatory cell and zebrafish models, thus indicating that CIT-H2S is a robust tool with the ability to study the occurrence and development of hydrogen sulfide and inflammation.
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Affiliation(s)
- Sitong Chen
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Ting Liu
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Xiaomin Yuan
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Liyi Zhou
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China.
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Yang J, Wang Y, Wang Z, Wang J, Zhang C, Gu X, Hu L, Wang H. Multifunctional lipid droplet probes for observing the polarity change of ferroptosis, inflammation, fatty liver and evaluating the efficacy of drugs. Anal Chim Acta 2024; 1312:342747. [PMID: 38834275 DOI: 10.1016/j.aca.2024.342747] [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: 04/03/2024] [Revised: 05/14/2024] [Accepted: 05/18/2024] [Indexed: 06/06/2024]
Abstract
BACKGROUND Lipid droplets (LDs) polarity is intricately linked to diverse biological processes and diseases. The visualization of LDs-polarity is of vital importance but challenging due to the lack of high-specificity, high-sensitivity and large-Stokes shift probes for real-time tracking LDs-polarity in biological systems. RESULTS Four D-π-A based fluorescent probes (TPA-TCF1-TPA-TCF4) have been developed by combining tricyanofuran (an electron acceptor, A) and triphenylamine (an electron donor, D) derivatives with different terminal groups. Among them, TPA-TCF1 and TPA-TCF4 exhibit excellent polar sensitivity, large Stokes shift (≥182 nm in H2O), and efficient LDs targeting ability. In particular, TPA-TCF4 is capable of monitoring the change of LDs-polarity during ferroptosis, inflammation, apoptosis of cancer cell, and fatty liver. SIGNIFICANCE All these features render TPA-TCF4 a versatile tool for pharmacodynamic evaluation of anti-cancer drugs, in-depth understanding of the biological effect of LDs on ferroptosis, and medical diagnosis of LDs-polarity related diseases.
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Affiliation(s)
- Jing Yang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Yuqing Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Zhiyu Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Jie Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Cuifeng Zhang
- School of Anesthesiology, Wannan Medical College, Wuhu, 241002, China
| | - Xiaoxia Gu
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China.
| | - Lei Hu
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China.
| | - Hui Wang
- Anhui Innovative Center for Drug Basic Research of Metabolic Diseases, Wannan Medical College, Wuhu, 241002, China; School of Pharmacy, Wannan Medical College, Wuhu, 241002, China.
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7
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Wang Y, Song Y, Xu L, Zhou W, Wang W, Jin Q, Xie Y, Zhang J, Liu J, Wu W, Li H, Liang L, Wang J, Yang Y, Chen X, Ge S, Gao T, Zhang L, Xie M. A Membrane-Targeting Aggregation-Induced Emission Probe for Monitoring Lipid Droplet Dynamics in Ischemia/Reperfusion-Induced Cardiomyocyte Ferroptosis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309907. [PMID: 38696589 PMCID: PMC11234465 DOI: 10.1002/advs.202309907] [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: 12/17/2023] [Revised: 04/01/2024] [Indexed: 05/04/2024]
Abstract
Myocardial ischemia/reperfusion injury (MIRI) is the leading cause of irreversible myocardial damage. A pivotal pathogenic factor is ischemia/reperfusion (I/R)-induced cardiomyocyte ferroptosis, marked by iron overload and lipid peroxidation. However, the impact of lipid droplet (LD) changes on I/R-induced cardiomyocyte ferroptosis is unclear. In this study, an aggregation-induced emission probe, TPABTBP is developed that is used for imaging dynamic changes in LD during myocardial I/R-induced ferroptosis. TPABTBP exhibits excellent LD-specificity, superior capability for monitoring lipophagy, and remarkable photostability. Molecular dynamics (MD) simulation and super-resolution fluorescence imaging demonstrate that the TPABTBP is specifically localized to the phospholipid monolayer membrane of LDs. Imaging LDs in cardiomyocytes and myocardial tissue in model mice with MIRI reveals that the LD accumulation level increase in the early reperfusion stage (0-9 h) but decrease in the late reperfusion stage (>24 h) via lipophagy. The inhibition of LD breakdown significantly reduces the lipid peroxidation level in cardiomyocytes. Furthermore, it is demonstrated that chloroquine (CQ), an FDA-approved autophagy modulator, can inhibit ferroptosis, thereby attenuating MIRI in mice. This study describes the dynamic changes in LD during myocardial ischemia injury and suggests a potential therapeutic target for early MIRI intervention.
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Chen F, Kang R, Tang D, Liu J. Ferroptosis: principles and significance in health and disease. J Hematol Oncol 2024; 17:41. [PMID: 38844964 PMCID: PMC11157757 DOI: 10.1186/s13045-024-01564-3] [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: 04/08/2024] [Accepted: 06/02/2024] [Indexed: 06/09/2024] Open
Abstract
Ferroptosis, an iron-dependent form of cell death characterized by uncontrolled lipid peroxidation, is governed by molecular networks involving diverse molecules and organelles. Since its recognition as a non-apoptotic cell death pathway in 2012, ferroptosis has emerged as a crucial mechanism in numerous physiological and pathological contexts, leading to significant therapeutic advancements across a wide range of diseases. This review summarizes the fundamental molecular mechanisms and regulatory pathways underlying ferroptosis, including both GPX4-dependent and -independent antioxidant mechanisms. Additionally, we examine the involvement of ferroptosis in various pathological conditions, including cancer, neurodegenerative diseases, sepsis, ischemia-reperfusion injury, autoimmune disorders, and metabolic disorders. Specifically, we explore the role of ferroptosis in response to chemotherapy, radiotherapy, immunotherapy, nanotherapy, and targeted therapy. Furthermore, we discuss pharmacological strategies for modulating ferroptosis and potential biomarkers for monitoring this process. Lastly, we elucidate the interplay between ferroptosis and other forms of regulated cell death. Such insights hold promise for advancing our understanding of ferroptosis in the context of human health and disease.
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Affiliation(s)
- Fangquan Chen
- DAMP Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, Guangdong, China
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, 75390, USA
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, 75390, USA.
| | - Jiao Liu
- DAMP Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, Guangdong, China.
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Yan L, Tang L, Wu X, Li L. Recent Advances in Organic Small-Molecule Fluorescent Probes Based on Dicyanoisophorone Derivatives. Crit Rev Anal Chem 2024:1-28. [PMID: 38836446 DOI: 10.1080/10408347.2024.2354328] [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: 06/06/2024]
Abstract
Fluorescent probe technology holds great promise in the fields of environmental monitoring and clinical diagnosis due to its inherent advantages, including easy operation, reliable detection signals, fast analysis speed, and in situ imaging capabilities. In recent years, a wide range of fluorescent probes based on diverse fluorophores have been developed for the analysis and detection of various analytes, yielding significant achievement. Among these fluorophores, the dicyanoisophorone-based fluorophores have garnered significant attention. Dicyanoisoporone exhibits minimal fluorescence, yet possesses a robust electron-withdrawing capability, rendering it suitable for constructing of D-π-A structured fluorophores. Leveraging the intramolecular charge transfer (ICT) effect, such fluorophores exhibit near-infrared (NIR) fluorescence emission with a large Stokes shift, thereby offering remarkable advantages in the design and development of NIR fluorescence probes. This review article primarily focus on small-molecule dicyanoisoporone-based probes from the past two years, elucidating their design strategies, detection performances, and applications. Additionally, we summarize current challenges while predicting future directions to provide valuable references for developing novel and advanced fluorescence probes based on dicyanoisoporone derivatives.
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Affiliation(s)
- Liqiang Yan
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, China
| | - Liting Tang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, China
| | - Xiongzhi Wu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, China
| | - Lin Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, China
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Gui Z, Gong S, Feng G. Constructing Dual-State Emissive Fluorophores via Boc Protection and Discovering a High-Fidelity Imaging Probe for Lipid Droplets. Anal Chem 2024; 96:6724-6729. [PMID: 38635821 DOI: 10.1021/acs.analchem.4c00343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Dual-state emissive (DSE) materials exhibit fluorescence in both solid and solution states and have become an emerging material in the fields of materials science and sensing in recent years. However, due to the lack of effective and universal preparation methods, DSE materials, especially those with long emission wavelengths, are still scarce. Developing an effective method for constructing such DSE molecules is urgently needed. In this study, we constructed three DSE molecules (NRP-Boc, DCIP-Boc, and DCMP-Boc) with far-red to near-infrared fluorescence by simply modifying three traditional aggregation-caused quenching (ACQ) fluorophores with tert-butyloxycarbonyl (Boc) groups. Density functional theory (DFT) calculations and crystal data revealed the reasons for the bright fluorescence of these three molecules in solution and solid, demonstrating that this Boc protection method is a simple and effective strategy for constructing DSE molecules. We also found that these three DSE molecules have the potential to target and visualize lipid droplets (LDs). Among them, DCIP-Boc shows advantages of a large Stokes shift, long emission wavelength, low fluorescence background, and good photostability in cells, providing a powerful new molecular tool with DSE property for high-fidelity imaging of LDs.
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Affiliation(s)
- Zhisheng Gui
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Shengyi Gong
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Guoqiang Feng
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
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Jiao X, Wang Y, Zhang J, Wang X. Combination of two-photon fluorescent probes for carboxylesterase and ONOO - to visualize the transformation of nonalcoholic fatty liver to nonalcoholic steatohepatitis in liver orthotopic imaging. Talanta 2024; 270:125521. [PMID: 38091750 DOI: 10.1016/j.talanta.2023.125521] [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: 10/18/2023] [Revised: 12/02/2023] [Accepted: 12/04/2023] [Indexed: 01/27/2024]
Abstract
As the most common cause of liver diseases, nonalcoholic fatty liver disease (NAFLD) can be classified into nonalcoholic fatty liver (NAFL) and nonalcoholic steatohepatitis (NASH). While NAFL is generally benign, the transition from NAFL to NASH is a cardinal feature of the non-benign liver disease that leads to cirrhosis and cancer, which indicates that tracking the transformation of NAFL to NASH timely is significant for precision management of liver diseases. Therefore, two fluorescent probes (CNFCl and DRNO) have been developed to visualize this pathological event. α-Fluorochloroacetamide and α-ketoamide was employed as the recognition site for carboxylesterase (CE) in CNFCl and peroxynitrite (ONOO-) in DRNO, respectively. CNFCl (λem = 445 nm) and DRNO (λem = 560 nm) showed high specificity and sensitivity towards CE and ONOO- respectively. By incubating with CE/ONOO- for 0.5 h respectively, both the emission intensity of CNFCl (linear range: 0-0.2 U/mL) and DRNO (linear range: 0-17.5 μM) displayed significant enhancement. As a result, the detection limit of CNFCl and DRNO for CE and ONOO- was calculated as 4.2 mU/L and 0.05 μM respectively. More importantly, the emission spectra of CNFCl and DRNO in the presence of CE and ONOO- respectively were cross-talk free under the two-photon excitation of 720 nm. This greatly facilitated the simultaneous detection of CE and ONOO- at distinctive channel, thus ensuring the high fidelity of the detection. These two probes were combined to image the fluctuation of CE and ONOO- during the conversion of NAFL to NASH in vitro and in vivo. It was found that while CE displayed a tendency to rise and then reduce during the transition from NAFL to NASH, ONOO- increased continuously, confirming that the combined imaging by CNFCl and DRNO might visualize the transformation of NAFL to NASH. The results provide robust visual tool to decipher the relationship between the stage of NAFLD and the level of CE/ONOO-. We anticipate this study may open new avenues to distinguish NASH from NAFL, which may further promote the study of intracellular biological activities of CE and the development of NAFLD diagnostic methods.
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Affiliation(s)
- Xiaoyun Jiao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, PR China
| | - Yucheng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, PR China
| | - Jian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, PR China.
| | - Xu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, PR China.
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