1
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Liu X, Zhang W, Gu J, Wang J, Wang Y, Xu Z. Single-cell SERS imaging of dual cell membrane receptors expression influenced by extracellular matrix stiffness. J Colloid Interface Sci 2024; 668:335-342. [PMID: 38678888 DOI: 10.1016/j.jcis.2024.04.170] [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: 02/09/2024] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
Membrane receptors perform a diverse range of cellular functions, accounting for more than half of all drug targets. The mechanical microenvironment regulates cell behaviors and phenotype. However, conventional analysis methods of membrane receptors often ignore the effects of the extracellular matrix stiffness, failing to reveal the heterogeneity of cell membrane receptors expression. Herein, we developed an in-situ surface-enhanced Raman scattering (SERS) imaging method to visualize single-cell membrane receptors on substrates with different stiffness. Two SERS substrates, Au@4-mercaptobenzonitrile@Ag@Sgc8c and Au@4-pethynylaniline@Ag@SYL3c, were employed to specifically target protein tyrosine kinase-7 (PTK7) and epithelial cell adhesion molecule (EpCAM), respectively. The polyacrylamide (PA) gels with tunable stiffness (2.5-25 kPa) were constructed to mimic extracellular matrix. The simultaneous SERS imaging of dual membrane receptors on single cancer cells on substrates with different stiffness was achieved. Our findings reveal decreased expression of PTK7 and EpCAM on cells cultured on stiffer substrates and higher migration ability of the cells. The results elucidate the heterogeneity of membrane receptors expression of cells cultured on the substrates with different stiffness. This single-cell analysis method offers an in-situ platform for investigating the impacts of extracellular matrix stiffness on the expression of membrane receptors, providing insights into the role of cell membrane receptors in cancer metastasis.
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Affiliation(s)
- Xiaopeng Liu
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Wenshu Zhang
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Jiahui Gu
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Jie Wang
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Yue Wang
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Zhangrun Xu
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China.
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2
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Qiu L, Xu H, Sui B, Jiang P, Wang J, Xu D, Liang F, Ma T, Wang H, Chen J. Elucidating the Functional Mechanism of PTK7 in Cancer Development through Spatial Assembly Analysis Using Super Resolution Imaging. Anal Chem 2024; 96:7669-7678. [PMID: 38708542 DOI: 10.1021/acs.analchem.4c00588] [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: 05/07/2024]
Abstract
Protein tyrosine kinase-7 (PTK7) has been reported as a vital participant in the Wnt signaling pathway, influencing tumorigenesis and metastasis. However, their specific roles in the mechanisms underlying cancer development and progression remain elusive. Here, using direct stochastic optical reconstruction microscopy (dSTORM) with aptamer-probe labeling, we first revealed that a weakening clustering distribution of PTK7 on the basal membranes happened as cellular migration increased during cancer progression. This correspondence was further supported by a diminished aggregated state of PTK7 caused by direct enhancement of cell migration. By comparing the alterations in PTK7 distribution with activation or inhibition of specific Wnt signaling pathway, we speculated that PTK7 could modulate cell migration by participating in the interplay between canonical Wnt (in MCF7 cells) and noncanonical Wnt signals (in MDA-MB-231 cells). Furthermore, we discovered that the spatial distribution morphology of PTK7 was also subject to the hydrolysis ability and activation state of the related hydrolase Matrix metallopeptidase14 (MMP14). This function-related specific assembly of PTK7 reveals a clear relationship between PTK7 and cancer. Meanwhile, potential molecular interactions predicted by the apparent assembly morphology can promote a deep understanding of the functional mechanism of PTK7 in cancer progress.
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Affiliation(s)
- Luqi Qiu
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Haijiao Xu
- Research Center of Biomembranomics, State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
| | - Binglin Sui
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Pengwei Jiang
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Jiaqi Wang
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Dandan Xu
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Feng Liang
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Tao Ma
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Hongda Wang
- Research Center of Biomembranomics, State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
| | - Junling Chen
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
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3
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Lin B, Xiao F, Jiang J, Zhao Z, Zhou X. Engineered aptamers for molecular imaging. Chem Sci 2023; 14:14039-14061. [PMID: 38098720 PMCID: PMC10718180 DOI: 10.1039/d3sc03989g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/07/2023] [Indexed: 12/17/2023] Open
Abstract
Molecular imaging, including quantification and molecular interaction studies, plays a crucial role in visualizing and analysing molecular events occurring within cells or organisms, thus facilitating the understanding of biological processes. Moreover, molecular imaging offers promising applications for early disease diagnosis and therapeutic evaluation. Aptamers are oligonucleotides that can recognize targets with a high affinity and specificity by folding themselves into various three-dimensional structures, thus serving as ideal molecular recognition elements in molecular imaging. This review summarizes the commonly employed aptamers in molecular imaging and outlines the prevalent design approaches for their applications. Furthermore, it highlights the successful application of aptamers to a wide range of targets and imaging modalities. Finally, the review concludes with a forward-looking perspective on future advancements in aptamer-based molecular imaging.
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Affiliation(s)
- Bingqian Lin
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers-Ministry of Education, Department of Hematology of Zhongnan Hospital, Taikang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Feng Xiao
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers-Ministry of Education, Department of Hematology of Zhongnan Hospital, Taikang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Jinting Jiang
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers-Ministry of Education, Department of Hematology of Zhongnan Hospital, Taikang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Zhengjia Zhao
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers-Ministry of Education, Department of Hematology of Zhongnan Hospital, Taikang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
| | - Xiang Zhou
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers-Ministry of Education, Department of Hematology of Zhongnan Hospital, Taikang Center for Life and Medical Sciences, Wuhan University Wuhan 430072 China
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4
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Sui B, Chen J, Ge D, Liang F, Wang H. Assembly Characterization of Human Equilibrium Nucleoside Transporter 1 (hENT1) by Inhibitor Probe-Based dSTORM Imaging. Anal Chem 2023. [PMID: 37276019 DOI: 10.1021/acs.analchem.3c00596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nucleoside transporters (NTs) play an important role in the metabolism of nucleoside substances and the efficacy of nucleoside drugs. Its spatial information related to biofunctions at the single-molecule level remains unclear, owing to the limitation of the existing labeling methods and traditional imaging methods. Therefore, we synthesize the inhibitor-based fluorescent probe SAENTA-Cy5 and apply direct stochastic optical reconstruction microscopy (dSTORM) to conduct refined observation of human equilibrative nucleoside transporter 1 (hENT1), the most important and famous member of NTs. We first demonstrate the labeling specificity and superiority of SAENTA-Cy5 to the antibody probe. Then, we found different assembly patterns of hENT1 on the apical and basal membranes, which are further investigated to be caused by varying associations of membrane carbohydrates, membrane classical functional domains (lipid rafts), and associated membrane proteins (EpCAM). Our work provides an efficient method for labeling hENT1, which contributes to realize fine observation of NTs. The findings on the assembly features and potential assembly mechanism of hENT1 promote a better understanding of its biofunction, which facilitates further investigations on how NTs work in the metabolism of nucleoside and nucleoside analogues.
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Affiliation(s)
- Binglin Sui
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Junling Chen
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Dian Ge
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Feng Liang
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Research Center of Biomembranomics, 5625 Renmin Street, Changchun, Jilin 130022, China
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5
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Chatterjee S, Kramer SN, Wellnitz B, Kim A, Kisley L. Spatially Resolving Size Effects on Diffusivity in Nanoporous Extracellular Matrix-like Materials with Fluorescence Correlation Spectroscopy Super-Resolution Optical Fluctuation Imaging. J Phys Chem B 2023; 127:4430-4440. [PMID: 37167609 PMCID: PMC10303168 DOI: 10.1021/acs.jpcb.3c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
It is well documented that the nanoscale structures within porous microenvironments greatly impact the diffusion dynamics of molecules. However, how the interaction between the environment and molecules influences the diffusion dynamics has not been thoroughly explored. Here, we show that fluorescence correlation spectroscopy super-resolution optical fluctuation imaging (fcsSOFI) can be used to accurately measure the diffusion dynamics of molecules within varying matrices such as nanopatterned surfaces and porous agarose hydrogels. Our data demonstrate the robustness of fcsSOFI, where it is possible not only to quantify the diffusion speeds of molecules in heterogeneous media but also to recover the matrix structure with resolution on the order of 100 nm. Using dextran molecules of varying sizes, we show that the diffusion coefficient is sensitive to the change in the molecular hydrodynamic radius. fcsSOFI images further reveal that smaller dextran molecules can freely move through the small pores of the hydrogel and report the detailed porous structure and local diffusion heterogeneities not captured by the average diffusion coefficient. Conversely, bigger dextran molecules are confined and unable to freely move through the hydrogel, highlighting only the larger pore structures. These findings establish fcsSOFI as a powerful tool to characterize spatial and diffusion information of diverse macromolecules within biorelevant matrices.
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Affiliation(s)
- Surajit Chatterjee
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, United States
| | - Stephanie N Kramer
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, United States
| | - Benjamin Wellnitz
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, United States
| | - Albert Kim
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, United States
| | - Lydia Kisley
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, United States
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7079, United States
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6
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Ge D, Chen J, Zhao Z, Sui B, Liang F, Wang H. Characterizing the function-related specific assembly pattern of matrix metalloproteinase-14 by dSTORM imaging. Talanta 2023; 260:124523. [PMID: 37105082 DOI: 10.1016/j.talanta.2023.124523] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/29/2023] [Accepted: 04/01/2023] [Indexed: 04/29/2023]
Abstract
As transmembrane proteolytic enzyme, matrix metalloproteinase-14 (MMP14) regulates cell migration and cancer metastasis, but how it works at the single molecule level is unclear. Molecular localization is closely related to its function, and revealing its spatial assemble details is thus helpful to understand bio-function. Here, we apply aptamer probe and dSTORM to characterize MMP14 distribution. With demonstrating labeling properties of the probe, we investigate the specific distributed pattern of MMP14 on various cell membranes with different migratory capacities, and find that MMP14 mostly aggregate in clustering state, which becomes more significant with enhancing its hydrolysis efficiency on high-migratory cells. Lots of MMP14 are revealed to be co-localized with its substrate PTK7, and this colocalization decreases with weakening cell migration, suggesting that MMP14 may coordinate cell migration by altering its spatial relationship with substrate proteins. This work will promote a deep understanding of the roles of MMP14 in cell migration and cancer metastasis.
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Affiliation(s)
- Dian Ge
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei, 430081, China
| | - Junling Chen
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei, 430081, China.
| | - Zhiyong Zhao
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei, 430081, China
| | - Binglin Sui
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei, 430081, China
| | - Feng Liang
- Improve-WUST Joint Laboratory of Advanced Technology for Point-of-Care Testing and Precision Medicine, School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei, 430081, China.
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Research Center of Biomembranomics, 5625 Renmin Street, Changchun, Jilin, 130022, China.
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7
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Sun N, Jia Y, Bai S, Li Q, Dai L, Li J. The power of super-resolution microscopy in modern biomedical science. Adv Colloid Interface Sci 2023; 314:102880. [PMID: 36965225 DOI: 10.1016/j.cis.2023.102880] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023]
Abstract
Super-resolution microscopy (SRM) technology that breaks the diffraction limit has revolutionized the field of cell biology since its appearance, which enables researchers to visualize cellular structures with nanometric resolution, multiple colors and single-molecule sensitivity. With the flourishing development of hardware and the availability of novel fluorescent probes, the impact of SRM has already gone beyond cell biology and extended to nanomedicine, material science and nanotechnology, and remarkably boosted important breakthroughs in these fields. In this review, we will mainly highlight the power of SRM in modern biomedical science, discussing how these SRM techniques revolutionize the way we understand cell structures, biomaterials assembly and how assembled biomaterials interact with cellular organelles, and finally their promotion to the clinical pre-diagnosis. Moreover, we also provide an outlook on the current technical challenges and future improvement direction of SRM. We hope this review can provide useful information, inspire new ideas and propel the development both from the perspective of SRM techniques and from the perspective of SRM's applications.
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Affiliation(s)
- Nan Sun
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049
| | - Yi Jia
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Shiwei Bai
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049
| | - Qi Li
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences, Beijing 100190, China
| | - Luru Dai
- Wenzhou Institute and Wenzhou Key Laboratory of Biophysics, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049.
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8
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Li B, Huang X, Lu Y, Fan Z, Li B, Jiang D, Sojic N, Liu B. High Electrochemiluminescence from Ru(bpy) 3 2+ Embedded Metal-Organic Frameworks to Visualize Single Molecule Movement at the Cellular Membrane. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2204715. [PMID: 36328787 PMCID: PMC9762315 DOI: 10.1002/advs.202204715] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/11/2022] [Indexed: 05/04/2023]
Abstract
Direct imaging of single-molecule and its movement is of fundamental importance in biology, but challenging. Herein, aided by the nanoconfinement effect and resultant high reaction activity within metal-organic frameworks (MOFs), the designed Ru(bpy)3 2+ embedded MOF complex (RuMOFs) exhibits bright electrochemiluminescence (ECL) emission permitting high-quality imaging of ECL events at single molecule level. By labeling individual proteins of living cells with single RuMOFs, the distribution of membrane tyrosine-protein-kinase-like7 (PTK7) proteins at low-expressing cells is imaged via ECL. More importantly, the efficient capture of ECL photons generated inside the MOFs results in a stable ECL emission up to 1 h, allowing the in operando visualization of protein movements at the cellular membrane. As compared with the fluorescence observation, near-zero ECL background surrounding the target protein with the ECL emitter gives a better contrast for the dynamic imaging of discrete protein movement. This achievement of single molecule ECL dynamic imaging using RuMOFs will provide a more effective nanoemitter to observe the distribution and motion of individual proteins at living cells.
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Affiliation(s)
- Binxiao Li
- Department of ChemistryShanghai Stomatological HospitalState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China
| | - Xuedong Huang
- Department of ChemistryShanghai Stomatological HospitalState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China
| | - Yanwei Lu
- Department of ChemistryShanghai Stomatological HospitalState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China
| | - Zihui Fan
- Department of ChemistryShanghai Stomatological HospitalState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China
| | - Bin Li
- Department of ChemistryShanghai Stomatological HospitalState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life and School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu210093China
| | - Neso Sojic
- Bordeaux INPInstitute of Molecular Science (ISM), and CNRS UMR 5255University of BordeauxPessac33607France
| | - Baohong Liu
- Department of ChemistryShanghai Stomatological HospitalState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China
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9
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Integrated DNA triangular prism nanomachines for two-stage dynamic recognizing and bio-imaging from surface to the inside of living cells. Biosens Bioelectron 2022; 213:114478. [PMID: 35732084 DOI: 10.1016/j.bios.2022.114478] [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: 03/23/2022] [Revised: 05/19/2022] [Accepted: 06/08/2022] [Indexed: 11/22/2022]
Abstract
The identification and detection of biomarkers in cancer cells play an essential role in the early detection of diseases, especially the detection of dual-biomarker. However, one of the most important limiting factors is how to realize the identification and labeling of biomarkers dynamically from the plasma membrane to the cytoplasm in living cells. In this study, integrated DNA triangular prism nanomachines (IDTPNs), a two-stage identification and dynamic bio-imaging strategy, recognize biomarkers from the plasma membrane to the cytoplasm have been designed. DNA triangular prism (DTP) was selected to act as a delivery platform with the aptamer Sgc8c and P53 modified on the side as the recognition molecules. Through the specific recognition of aptamers and the superior internalization of DTP, the IDTPNs realize the dynamic responses to PTK7 and p53 from the membrane to the cytoplasm in living cells. It is proved that the IDTPNs can be used for dynamic dual-biomarker recognition and bio-image from the surface to the inside of tumor cells automatically. Therefore, the strategy we developed provides a reliable platform for tumor diagnosis and biomarker research.
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In Vivo Evaluation of Sgc8-c Aptamer as a Molecular Imaging Probe for Colon Cancer in a Mouse Xenograft Model. Int J Mol Sci 2022; 23:ijms23052466. [PMID: 35269608 PMCID: PMC8910571 DOI: 10.3390/ijms23052466] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 11/22/2022] Open
Abstract
Recent biotechnological applications in the field of clinical oncology led to the identification of new biomarkers as molecular targets of cancer, and to broad developments in the field of personalized medicine. Aptamers are oligonucleotides (ssDNA or RNA) that are selected to specifically recognize a molecular target with high affinity and specificity. Based on this, new horizons for their use as molecular imaging probes are being explored. The objective of this work was to evaluate the Sgc8-c aptamer conjugated with Alexa Fluor 647 fluorophore as an imaging probe in a colon tumor xenograft mouse model, with potential application in molecular imaging. In this study, the LS174T cell line was used to induce colorectal adenocarcinoma in nude mice. After confirmation of PTK7 overexpression by immunohistochemistry, in vivo studies were performed. Pharmacokinetic, in vivo and ex vivo biodistribution imaging, and a competition assay were evaluated by fluorescence imaging. In vivo visualization of the probe in the tumors was assessed two hours after aptamer probe administration, exhibiting excellent tumor-to-background ratios in biodistribution studies and high specificity in the competition test. Our results demonstrated the functionality of Scg8-c as an imaging probe for colon cancer, with potential clinical applications.
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11
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Li H, Gao J, Cao L, Xie X, Fan J, Wang H, Wang H, Nie Z. A DNA Molecular Robot that Autonomously Walks on the Cell Membrane to Drive Cell Motility. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108210] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hao Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat-sen University Shenzhen 518107 P. R. China
| | - Jing Gao
- State Key Laboratory of Electroanalytical Chemistry Research Center of Biomembranomics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 Jilin P. R. China
| | - Lei Cao
- State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
| | - Xuan Xie
- State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
| | - Jiahui Fan
- State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry Research Center of Biomembranomics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 Jilin P. R. China
| | - Hong‐Hui Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
| | - Zhou Nie
- State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
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12
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13
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Li H, Gao J, Cao L, Xie X, Fan J, Wang H, Wang HH, Nie Z. A DNA Molecular Robot that Autonomously Walks on the Cell Membrane to Drive Cell Motility. Angew Chem Int Ed Engl 2021; 60:26087-26095. [PMID: 34490693 DOI: 10.1002/anie.202108210] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/17/2021] [Indexed: 11/09/2022]
Abstract
Synthetic molecular robots can execute sophisticated molecular tasks at nanometer resolution. However, a molecular robot capable of controlling cellular behavior remains unexplored. Herein, we report a self-propelled DNA robot operating on the cell membrane to control the migration of a cell. Driven by DNAzyme catalytic activity, the DNA robot could autonomously and stepwise move on the membrane-floating cell-surface receptors in a stochastic manner and simultaneously trigger the receptor-dimerization to activate downstream signaling for cell motility. The cell membrane-associated continuous motion and operation of a DNA robot allowed for the ultrasensitive regulation of MET/AKT signaling and cytoskeleton remodeling to enhance cell migration. Finally, we designed distinct conditional DNA robots to orthogonally manipulate the cell migration in a coculture of mixed cell populations. We have developed a novel strategy to engineer a cell-driving molecular robot, representing a promising avenue for precise cell manipulation with nanoscale resolution.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha, 410082, P. R. China.,School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, 518107, P. R. China
| | - Jing Gao
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China
| | - Lei Cao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha, 410082, P. R. China
| | - Xuan Xie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha, 410082, P. R. China
| | - Jiahui Fan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha, 410082, P. R. China
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China
| | - Hong-Hui Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha, 410082, P. R. China
| | - Zhou Nie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha, 410082, P. R. China
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