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Hu L, Dong C, Wang Z, He S, Yang Y, Zi M, Li H, Zhang Y, Chen C, Zheng R, Jia S, Liu J, Zhang X, He Y. A rationally designed fluorescence probe achieves highly specific and long-term detection of senescence in vitro and in vivo. Aging Cell 2023; 22:e13896. [PMID: 37312431 PMCID: PMC10410003 DOI: 10.1111/acel.13896] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 05/09/2023] [Accepted: 05/12/2023] [Indexed: 06/15/2023] Open
Abstract
Senescent cells (SnCs) are implicated in aging and various age-related pathologies. Targeting SnCs can treat age-related diseases and extend health span. However, precisely tracking and visualizing of SnCs is still challenging, especially in in vivo environments. Here, we developed a near-infrared (NIR) fluorescent probe (XZ1208) that targets β-galactosidase (β-Gal), a well-accepted biomarker for cellular senescence. XZ1208 can be cleaved rapidly by β-Gal and produces a strong fluorescence signal in SnCs. We demonstrated the high specificity and sensitivity of XZ1208 in labeling SnCs in naturally aged, total body irradiated (TBI), and progeroid mouse models. XZ1208 achieved a long-term duration of over 6 days in labeling senescence without causing significant toxicities and accurately detected the senolytic effects of ABT263 on eliminating SnCs. Furthermore, XZ1208 was applied to monitor SnCs accumulated in fibrotic diseases and skin wound healing models. Overall, we developed a tissue-infiltrating NIR probe and demonstrated its excellent performance in labeling SnCs in aging and senescence-associated disease models, indicating great potential for application in aging studies and diagnosis of senescence-associated diseases.
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Affiliation(s)
- Li Hu
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Chanjuan Dong
- Drug Discovery & Development Center, Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghaiChina
| | - Zhe Wang
- School of Chinese Materia MedicaNanjing University of Chinese MedicineNanjingChina
| | - Shengyuan He
- Drug Discovery & Development Center, Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghaiChina
| | - Yiwen Yang
- School of Chinese Materia MedicaNanjing University of Chinese MedicineNanjingChina
| | - Meiting Zi
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
| | - Huiqin Li
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
| | - Yanghuan Zhang
- Laboratory of Molecular Genetics of Aging and Tumor, Medical SchoolKunming University of Science and TechnologyKunmingChina
| | - Chuanjie Chen
- University of Chinese Academy of SciencesBeijingChina
- Drug Discovery & Development Center, Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghaiChina
| | - Runzi Zheng
- Laboratory of Molecular Genetics of Aging and Tumor, Medical SchoolKunming University of Science and TechnologyKunmingChina
| | - Shuting Jia
- Laboratory of Molecular Genetics of Aging and Tumor, Medical SchoolKunming University of Science and TechnologyKunmingChina
| | - Jing Liu
- Laboratory of Molecular Genetics of Aging and Tumor, Medical SchoolKunming University of Science and TechnologyKunmingChina
| | - Xuan Zhang
- University of Chinese Academy of SciencesBeijingChina
- Drug Discovery & Development Center, Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghaiChina
- School of Chinese Materia MedicaNanjing University of Chinese MedicineNanjingChina
| | - Yonghan He
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of ZoologyChinese Academy of SciencesKunmingChina
- University of Chinese Academy of SciencesBeijingChina
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Ma C, Yan D, Hou P, Liu X, Wang H, Xia C, Li G, Chen S. Bioimaging and Sensing Thiols In Vivo and in Tumor Tissues Based on a Near-Infrared Fluorescent Probe with Large Stokes Shift. Molecules 2023; 28:5702. [PMID: 37570672 PMCID: PMC10419645 DOI: 10.3390/molecules28155702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
The well-known small-molecule biothiols have been used to maintain the normal metabolism of peroxy radicals, forming protein structures, resisting cell apoptosis, regulating metabolism, and protecting the homeostasis of cells in the organism. A large amount of research has found that abnormal levels of the above biothiols can cause some adverse diseases, such as changes in hair pigmentation, a slower growth rate, delayed response, excessive sleep and skin diseases. In order to further investigate the exact intracellular molecular mechanism of biothiols, it is imperative to explore effective strategies for real-time biothiol detection in living systems. In this work, a new near-infrared (NIR) emission fluorescence probe (probe 1) for sensitive and selective detection of biothiols was devised by combining dicyanoisophorone derivatives with the dinitrobenzenesulfonyl (DNBS) group. As expected, probe 1 could specifically detect biothiols (Cys, Hcy and GSH) through the dinitrobenzenesulfonyl group to form dye 2, which works as a signaling molecule for sensing biothiols in real samples. Surprisingly, probe 1 showed superior sensing characteristics and low-limit detection towards biothiols (36.0 nM for Cys, 39.0 nM for Hcy and 48.0 nM for GSH) with a large Stokes shift (134 nm). Additionally, the function of probe 1 as a platform for detecting biothiols was confirmed by confocal fluorescence imaging of biothiols in MCF-7 cells and zebrafish. More importantly, the capability of probe 1 in vivo has been further evaluated by imaging the overexpressed biothiols in tumor tissue. It is reasonable to believe that probe 1 can provide a valuable method to explore the relationship between biothiols and the genesis of tumor.
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Affiliation(s)
- Chunhui Ma
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Dongling Yan
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Peng Hou
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Xiangbao Liu
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Hao Wang
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Chunhui Xia
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Gang Li
- Research Institute of Medicine & Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Song Chen
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
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3
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Ding W, Yao S, Chen Y, Wu Y, Li Y, He W, Guo Z. A Near-Infrared Fluorescent and Photoacoustic Probe for Visualizing Biothiols Dynamics in Tumor and Liver. Molecules 2023; 28:molecules28052229. [PMID: 36903474 PMCID: PMC10005096 DOI: 10.3390/molecules28052229] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/19/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
Biothiols, including glutathione (GSH), homocysteine (Hcy) and cysteine (Cys), play crucial roles in various physiological processes. Though an array of fluorescent probes have been designed to visualize biothiols in living organisms, few one-for-all imaging agents for sensing biothiols with fluorescence and photoacoustic imaging capabilities have been reported, since instructions for synchronously enabling and balancing every optical imaging efficacy are deficient. Herein, a new near-infrared thioxanthene-hemicyanine dye (Cy-DNBS) has been constructed for fluorescence and photoacoustic imaging of biothiols in vitro and in vivo. Upon treatment with biothiols, the absorption peak of Cy-DNBS shifted from 592 nm to 726 nm, resulting in a strong NIR absorption as well as a subsequent turn-on PA signal. Meanwhile, the fluorescence intensity increased instantaneously at 762 nm. Then, Cy-DNBS was successfully utilized for imaging endogenous and exogenous biothiols in HepG2 cells and mice. In particular, Cy-DNBS was employed for tracking biothiols upregulation in the liver of mice triggered by S-adenosyl methionine by means of fluorescent and photoacoustic imaging methods. We expect that Cy-DNBS serves as an appealing candidate for deciphering biothiols-related physiological and pathological processes.
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Affiliation(s)
- Weizhong Ding
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Shankun Yao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Yuncong Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
- Nanchuang (Jiangsu) Institute of Chemistry and Health, Nanjing 210000, China
- Correspondence: (Y.C.); (W.H.); (Z.G.)
| | - Yanping Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Yaheng Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Weijiang He
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Nanchuang (Jiangsu) Institute of Chemistry and Health, Nanjing 210000, China
- Correspondence: (Y.C.); (W.H.); (Z.G.)
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
- Nanchuang (Jiangsu) Institute of Chemistry and Health, Nanjing 210000, China
- Correspondence: (Y.C.); (W.H.); (Z.G.)
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Quan L, Moreno-Gonzalez I, Xie Z, Gamez N, Vegas-Gomez L, Song Q, Gu J, Lin W, Gomez-Gutierrez R, Wu T. A near-infrared probe for detecting and interposing amyloid beta oligomerization in early Alzheimer's disease. Alzheimers Dement 2023; 19:456-466. [PMID: 35436382 DOI: 10.1002/alz.12673] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/20/2022] [Accepted: 02/23/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND The misfolding and deposition of amyloid beta (Aβ) in human brain is the main hallmark of Alzheimer's disease (AD) pathology. One of the drivers of Alzheimer´s pathogenesis is the production of soluble oligomeric Aβ, which could potentially serve as a biomarker of AD. METHODS Given that the diphenylalanine (FF) at the C-terminus of Aβ fragments plays a key role in inducing the AD pathology, based on the hydrophobic structure of FF, we synthesized a near-infrared BF2-dipyrrolmethane fluorescent imaging probe (NB) to detect both soluble and insoluble Aβ. RESULTS We found that NB not only binds Aβ, particularly oligomeric Aβ, but also interposes self-assembly of Aβ through π-π interaction between NB and FF. CONCLUSION This work holds great promise in the early detection of AD and may also provide an innovative approach to decelerate and even halt AD onset and progression.
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Affiliation(s)
- Li Quan
- Jiangsu Provincial Engineering Research Center for Biomedical Materials and Advanced Medical Devices, Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu Province, China.,Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
| | - Ines Moreno-Gonzalez
- The University of Texas Health Science Center at Houston, Houston, Texas, USA.,Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Nazaret Gamez
- The University of Texas Health Science Center at Houston, Houston, Texas, USA.,Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain
| | - Laura Vegas-Gomez
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain
| | - Qinyong Song
- Jiangsu Provincial Engineering Research Center for Biomedical Materials and Advanced Medical Devices, Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu Province, China
| | - Jianhua Gu
- Electron Microscopy Core, Houston Methodist Research Institute, Houston, Texas, USA
| | - Wenhai Lin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Ruben Gomez-Gutierrez
- The University of Texas Health Science Center at Houston, Houston, Texas, USA.,Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain
| | - Tianfu Wu
- Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
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5
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Liu CX, Xiao SY, Gong XL, Zhu X, Wang YW, Peng Y. A Near-Infrared Fluorescent Probe for Recognition of Hypochlorite Anions Based on Dicyanoisophorone Skeleton. Molecules 2023; 28:molecules28010402. [PMID: 36615593 PMCID: PMC9823594 DOI: 10.3390/molecules28010402] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/23/2022] [Accepted: 12/24/2022] [Indexed: 01/09/2023]
Abstract
A novel near-infrared (NIR) fluorescent probe (SWJT-9) was designed and synthesized for the detection of hypochlorite anion (ClO-) using a diaminomaleonitrile group as the recognition site. SWJT-9 had large Stokes shift (237 nm) and showed an excellent NIR fluorescence response to ClO- with the color change under the visible light. It showed a low detection limit (24.7 nM), high selectivity, and rapid detection (within 2 min) for ClO-. The new detection mechanism of SWJT-9 on ClO- was confirmed by 1H NMR, MS spectrum, and the density functional theory (DFT) calculations. In addition, the probe was successfully used to detect ClO- in HeLa cells.
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Affiliation(s)
- Chang-Xiang Liu
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Shu-Yuan Xiao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xiu-Lin Gong
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xi Zhu
- Department of Neurology, The Third People’s Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu 610031, China
- Correspondence: (X.Z.); (Y.-W.W.)
| | - Ya-Wen Wang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
- Correspondence: (X.Z.); (Y.-W.W.)
| | - Yu Peng
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
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6
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Cai Q, Li Z, Li B, Jiang J, Li X, Meng W, Zhu S. Precise Diagnosis and Therapy of Bone Cancer Using Near-Infrared Lights. Front Bioeng Biotechnol 2021; 9:771153. [PMID: 34869286 PMCID: PMC8636834 DOI: 10.3389/fbioe.2021.771153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
Abstract
Bone is a preferred site for both primary and metastasis tumors. Current diagnosis of osteopathia typically relies on noninvasive skeleton radiography technology. However, due to the limited resolution of ionizing radiation, accurate diagnosis and effective identification impairment areas are still lacking. Near-infrared (NIR) bioimaging, especially in the NIR-II (1000-1700 nm) regions, can provide high sensitivity and spatiotemporal resolution bioimaging compared to the conventional radiography. Thus, NIR bioimaging affords intraoperative visualization and imaging-guided surgery, aiming to overcome challenges associated with theranostics of osteopathia and bone tumors. The present review aimed to summarize the latest evidence on the use of NIR probes for the targeting bone imaging. We further highlight the recent advances in bone photoX (X presents thermal, dynamic, and immuno) therapy through NIR probes, in particular combination with other customized therapeutic agents could provide high-efficiency treatment for bone tumors.
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Affiliation(s)
- Qing Cai
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Zuntai Li
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Baosheng Li
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Jiayang Jiang
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Xiaoyu Li
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Weiyan Meng
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Shoujun Zhu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, China
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7
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Zhou F, Yang S, Zhao C, Liu W, Yao X, Yu H, Sun X, Liu Y. γ-Glutamyl transpeptidase-activatable near-infrared nanoassembly for tumor fluorescence imaging-guided photothermal therapy. Theranostics 2021; 11:7045-7056. [PMID: 34093870 PMCID: PMC8171106 DOI: 10.7150/thno.60586] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/01/2021] [Indexed: 12/14/2022] Open
Abstract
Rationale: Precise treatment of tumors is attracting increasing attention. Molecular probes simultaneously demonstrating the diagnostic signal and pharmacological effect in response to tumor microenvironment are highly desired. γ-glutamyl transpeptidase (GGT) is a biomarker with significantly up-regulated expression in the tumor area. We developed a GGT responsive near-infrared (NIR) nanoassembly for tumor-specific fluorescence imaging-guided photothermal therapy. Methods: The GGT responsive NIR probe was constructed by conjugating GGT-specific substrate γ-glutamic acid (γ-Glu) with cyanine fluorophore (NRh-NH2) via amide reaction. The resulting NRh-G spontaneously assembled into nanoparticles (NRh-G-NPs) around 50 nm. The NPs were characterized and the properties evaluated in the presence or absence of GGT. Subsequently, we studied fluorescence imaging and photothermal therapy of NRh-G-NPs in vitro and in vivo. Results: NRh-G-NPs, upon specific reaction with GGT, turned into NRh-NH2-NPs, showing a ~180-fold fluorescence enhancement and excellent photothermal effect recovery. NRh-G-NPs could selectively light up U87MG tumor cells while their fluorescence was weak in L02 human normal liver cells. The NPs also showed excellent tumor cell ablation upon laser irradiation. After intravenous injection into tumor-bearing mice, NRh-G-NPs could arrive in the tumor area and specifically light up the tumor. Following laser irradiation, the tumor could be completely erased with no tumor reoccurrence for up to 40 days. Conclusions: NRh-G-NPs were specifically responsive to GGT overexpressed in U87MG tumor cells and selectively lit up the tumor for imaging-guided therapy. Besides, the recovery of photothermal property in the tumor area could improve cancer therapy precision and decreased side effects in normal tissues.
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Affiliation(s)
- Fangyuan Zhou
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Shikui Yang
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Chao Zhao
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Wangwang Liu
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Xufeng Yao
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Hui Yu
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Xiaolian Sun
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Yi Liu
- School of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
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8
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Wu J, Shao C, Ye X, Di X, Li D, Zhao H, Zhang B, Chen G, Liu HK, Qian Y. In Vivo Brain Imaging of Amyloid-β Aggregates in Alzheimer's Disease with a Near-Infrared Fluorescent Probe. ACS Sens 2021; 6:863-870. [PMID: 33438997 DOI: 10.1021/acssensors.0c01914] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abnormal accumulation of amyloid-β (Aβ) has been determined to be a critical factor for the progression of Alzheimer's disease (AD), which has motivated the development of new chemical approaches for early sensing and imaging of these Aβ aggregates. Herein, we report a new near-infrared (NIR) fluorescent probe for the selective monitoring of Aβ aggregates in vivo. This novel fluorophore, named CAQ, was based on the curcumin scaffold and was designed by introducing an intramolecular rotation donor and a quinoline functional group. CAQ was an environment-sensitive fluorescent probe that can be used as a reliable chemical tool for NIR imaging of amyloid plaques in a live Caenorhabditis elegans model of AD and in 5× FAD transgenic mice of early amyloid deposition. Our observations indicate that CAQ is promising for providing comprehensive information on neurodegenerative research, thereby promoting a deeper understanding of Alzheimer's pathological processes.
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Affiliation(s)
- Jian Wu
- School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road 1, Nanjing 210046, China
| | - Chenwen Shao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xiaolian Ye
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Nanjing University, 12 Xuefu Avenue, Nanjing 210061, China
| | - Xiaojiao Di
- School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road 1, Nanjing 210046, China
| | - Dongdong Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Hu Zhao
- School of Pharmaceutical Science, Zhejiang Chinese Medicine University, Hangzhou 311402, China
| | - Bing Zhang
- Department of Radiology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Guiquan Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center, Nanjing University, 12 Xuefu Avenue, Nanjing 210061, China
| | - Hong-Ke Liu
- School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road 1, Nanjing 210046, China
| | - Yong Qian
- School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road 1, Nanjing 210046, China
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9
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Zhang Z, Yuan Y, Liu Z, Chen H, Chen D, Fang X, Zheng J, Qin W, Wu C. Brightness Enhancement of Near-Infrared Semiconducting Polymer Dots for in Vivo Whole-Body Cell Tracking in Deep Organs. ACS Appl Mater Interfaces 2018; 10:26928-26935. [PMID: 30033725 DOI: 10.1021/acsami.8b08735] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In vivo visualization of cell migration and engraftment in small animals provide crucial information in biomedical studies. Semiconducting polymer dots (Pdots) are emerging as superior probes for biological imaging. However, in vivo whole-body fluorescence imaging is largely constrained by the limited brightness of Pdots in near-infrared (NIR) region. Here, we describe the brightness enhancement of NIR fluorescent Pdots for in vivo whole-body cell tracking in deep organs. We first synthesize semiconducting polymers with strong absorption in orange and far-red regions. By molecular doping, the weak broad-band fluorescence of the Pdots was significantly narrowed and enhanced by 1 order of magnitude enhancement, yielding bright narrow-band NIR emission with a quantum yield of ∼0.21. Under an excitation of far-red light (676 nm), a trace amount of Pdots (∼2 μg) in the stomach can be clearly detected in whole-body fluorescence imaging of live mice. The Pdots coated with a cell-penetrating peptide are able to brightly label cancer cells with minimal cytotoxicity. In vivo cell tracking in live mice indicated that the entrapment and migration of the tail-vein-administered cells (∼400 000) were clearly visualized in real time. These Pdots with deep-red excitation and bright NIR emission are promising for in vivo whole-body fluorescence imaging.
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Affiliation(s)
- Zhe Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Ye Yuan
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Zhihe Liu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Haobin Chen
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Dandan Chen
- Department of Biomedical Engineering , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
| | - Xiaofeng Fang
- Department of Biomedical Engineering , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
| | - Jie Zheng
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Weiping Qin
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun , Jilin 130012 , China
| | - Changfeng Wu
- Department of Biomedical Engineering , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
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