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Pu C, Huang Z, Huang L, Shen Q, Yu C. Label‐Free Fluorescence Turn‐On Detection of Histidine‐Tagged Proteins Based on Intramolecular Rigidification Induced Emission. ChemistrySelect 2023. [DOI: 10.1002/slct.202204406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Chibin Pu
- Department of Gastroenterology Zhongda Hospital School of Medicine Southeast University 87 Dingjiaqiao Road 210009 Nanjing P. R. China
| | - Zhongxi Huang
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
| | - Lihua Huang
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
| | - Qian Shen
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
| | - Changmin Yu
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
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Jin Y, Du N, Huang Y, Shen W, Tan Y, Chen YZ, Dou WT, He XP, Yang Z, Xu N, Tan C. Fluorescence Analysis of Circulating Exosomes for Breast Cancer Diagnosis Using a Sensor Array and Deep Learning. ACS Sens 2022; 7:1524-1532. [PMID: 35512281 DOI: 10.1021/acssensors.2c00259] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Emerging liquid biopsy methods for investigating biomarkers in bodily fluids such as blood, saliva, or urine can be used to perform noninvasive cancer detection. However, the complexity and heterogeneity of exosomes require improved methods to achieve the desired sensitivity and accuracy. Herein, we report our study on developing a breast cancer liquid biopsy system, including a fluorescence sensor array and deep learning (DL) tool AggMapNet. In particular, we used a 12-unit sensor array composed of conjugated polyelectrolytes, fluorophore-labeled peptides, and monosaccharides or glycans to collect fluorescence signals from cells and exosomes. Linear discriminant analysis (LDA) processed the fluorescence spectral data of cells and cell-derived exosomes, demonstrating successful discrimination between normal and different cancerous cells and 100% accurate classification of different BC cells. For heterogeneous plasma-derived exosome analysis, CNN-based DL tool AggMapNet was applied to transform the unordered fluorescence spectra into feature maps (Fmaps), which gave a straightforward visual demonstration of the difference between healthy donors and BC patients with 100% prediction accuracy. Our work indicates that our fluorescent sensor array and DL model can be used as a promising noninvasive method for BC diagnosis.
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Affiliation(s)
- Yuyao Jin
- The State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
- Open FIESTA, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Nan Du
- The State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Yuanfang Huang
- The State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
- Open FIESTA, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Wanxiang Shen
- Bioinformatics and Drug Design Group, Department of Pharmacy, National University of Singapore, Singapore 117543, Singapore
| | - Ying Tan
- The State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
- Open FIESTA, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Yu Zong Chen
- Shenzhen Bay Laboratory, Shenzhen 518055, P. R. China
| | - Wei-Tao Dou
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, Frontiers Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, 130 Meilong RD, Shanghai 200237, P. R. China
| | - Xiao-Peng He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, Frontiers Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, 130 Meilong RD, Shanghai 200237, P. R. China
| | - Zijian Yang
- Department of Breast and Thyroid Surgery, Peking University Shenzhen Hospital, Shenzhen 518034, P. R. China
| | - Naihan Xu
- The State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
- Open FIESTA, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Chunyan Tan
- The State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
- Open FIESTA, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
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Wu P, Tan C. Biological Sensing and Imaging Using Conjugated Polymers and Peptide Substrates. Protein Pept Lett 2021; 28:2-10. [PMID: 32586238 DOI: 10.2174/0929866527666200625162308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 02/03/2020] [Accepted: 05/07/2020] [Indexed: 11/22/2022]
Abstract
Peptides have been widely applied as targeting elements or enzyme-substrates in biological sensing and imaging. Conjugated Polymers (CPs) have emerged as a novel biosensing material and received considerable attention due to their excellent light absorption, strong fluorescence emission, as well as amplified quenching properties. In this review, we summarize the recent advances of using CPs and peptide substrates in biosensing and bioimaging. After a brief introduction of the advantages of CPs and peptide substrates, different sensing designs and mechanisms are discussed based on peptides' structures and functions, including targeting recognition elements, enzyme-substrates, and cell-penetrating elements. Applications of CPs and peptides in fluorescent imaging and Raman imaging in living cells are subsequently reviewed.
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Affiliation(s)
- Pan Wu
- The State Key Laboratory of Chemical Oncogenomics, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Chunyan Tan
- The State Key Laboratory of Chemical Oncogenomics, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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Li J, Du N, Tan Y, Hsu HY, Tan C, Jiang Y. Conjugated Polymer Nanoparticles Based on Copper Coordination for Real-Time Monitoring of pH-Responsive Drug Delivery. ACS APPLIED BIO MATERIALS 2021; 4:2583-2590. [PMID: 35014375 DOI: 10.1021/acsabm.0c01564] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal coordination-driven composite systems have excellent stability and pH-responsive ability, making them suitable for specific drug delivery in physiological conditions. In this study, an anionic conjugated polymer PPEIDA with a poly(p-phenylene ethynylene) backbone and iminodiacetic acid (IDA) side chains is used as a drug carrier to construct a class of pH-responsive nanoparticles, PPEIDA-Cu-DOX conjugated polymer nanoparticles (CPNs), by taking advantage of the metal coordination interaction of Cu2+ with PPEIDA and the drug doxorubicin (DOX). PPEIDA-Cu-DOX CPNs have high drug loading and encapsulation efficiency (EE), calculated to be 54.30 ± 1.10 and 95.80 ± 0.84%, respectively. Due to the good spectral overlap, Förster resonance energy transfer (FRET) takes place between PPEIDA and the drug DOX, which enables the observation of the loading and the release of DOX from CPNs in an acidic environment by monitoring fluorescence emission changes. Therefore, PPEIDA-Cu-DOX CPNs can also be used in real-time cell imaging to monitor drug release in addition to delivering DOX targeting tumor cells. Compared with free DOX, PPEIDA-Cu-DOX CPNs show a similar inhibition to tumor cells and lower toxicity to normal cells. Our results demonstrate the feasibility and potential of constructing pH-responsive CPNs via metal-ligand coordination interactions for cancer treatment.
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Affiliation(s)
- Jiatong Li
- State Key Laboratory of Chemical Oncogenomics, The Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China.,Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Nan Du
- State Key Laboratory of Chemical Oncogenomics, The Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Ying Tan
- State Key Laboratory of Chemical Oncogenomics, The Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Hsien-Yi Hsu
- School of Energy and Environment & Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong, P. R. China.,Shenzhen Research Institute of City, University of Hong Kong, Shenzhen 518057, P. R. China
| | - Chunyan Tan
- State Key Laboratory of Chemical Oncogenomics, The Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Yuyang Jiang
- State Key Laboratory of Chemical Oncogenomics, The Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China.,School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, P. R. China
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Pang X, Tan Y, Tan C, Li W, Du N, Lu Y, Jiang Y. One-Step Construction of Fluorenone-Based Donor-Acceptor-Type Conjugated Polymers via Direct Arylation Polymerization for Cell-Imaging Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28246-28253. [PMID: 31117449 DOI: 10.1021/acsami.9b04630] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Direct arylation polymerization (DARP) is a novel approach to obtain conjugated polymers (CPs) through the straightforward C-H activation of monomer building blocks. In this work, a convenient DARP method with high efficiency and excellent regioselectivity is developed to synthesize a series of donor-acceptor (D-A)-type CPs composed of electron-acceptor moiety fluorenones (FOs) and various electron-donor moieties. CPs with different band gaps are obtained in good yields and display large Stokes shifts up to 295 nm. Two ionic CPs, PFOP-NEt3(+) and PFOP-COO(-), were prepared in a polar solvent system to improve the water solubility and biocompatibility using the proposed DARP method. Detailed photophysical studies of these two CPs suggest that both solvation and hydrogen bonds play important roles in determining the polymers' spectroscopic properties. Further studies of the cationic polymer PFOP-NEt3(+) in cell imaging demonstrate its potential application in labeling cell membranes and lysosomes given its low cytotoxicity, excellent photostability, and specific subcellular localization.
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Affiliation(s)
- Xinlong Pang
- The State Key Laboratory of Chemical Oncogenomics, the Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China
| | - Ying Tan
- The State Key Laboratory of Chemical Oncogenomics, the Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China
| | - Chunyan Tan
- The State Key Laboratory of Chemical Oncogenomics, the Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China
| | - Wenlu Li
- The State Key Laboratory of Chemical Oncogenomics, the Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China
| | - Nan Du
- The State Key Laboratory of Chemical Oncogenomics, the Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China
| | - Yunpeng Lu
- Division of Chemistry and Biochemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
| | - Yuyang Jiang
- The State Key Laboratory of Chemical Oncogenomics, the Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China
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