1
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Elbeheiry HM, Schulz M. Enhancing Control Over Nitric Oxide Photorelease via a Molecular Keypad Lock. Chemistry 2024; 30:e202400709. [PMID: 38700927 DOI: 10.1002/chem.202400709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Indexed: 05/23/2024]
Abstract
Based on Boolean logic, molecular keypad locks secure molecular information, typically with an optical output. Here we investigate a rare example of a molecular keypad lock with a chemical output. To this end, the light-activated release of biologically important nitric oxide from a ruthenium complex is studied, using proton concentration and photon flux as inputs. In a pH-dependent equilibrium, a nitritoruthenium(II) complex is turned into a nitrosylruthenium(II) complex, which releases nitric oxide under irradiation with visible light. The precise prediction of the output nitric oxide concentration as function of the pH and photon flux is achieved with an artificial intelligence approach, namely the adaptive neuro-fuzzy inference system. In this manner an exceptionally high level of control over the output concentration is obtained. Moreover, the provided concept to lock a chemical output as well as the output prediction may be applied to other (photo)release schemes.
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Affiliation(s)
- Hani M Elbeheiry
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Department of Chemistry, Faculty of Science, Damietta University, 34517, New Damietta, Egypt
| | - Martin Schulz
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Department Functional Interfaces, Leibniz-Institute of Photonic Technologies, Albert-Einstein-Straße 9, 07745, Jena, Germany
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2
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Zhang H, Ren G, Hou W, Wang L, Sun Y, Liu J. A Silicon-Rhodamine-Based Heavy-Atom-Free Photosensitizer for Mitochondria-targeted Photodynamic Therapy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123688. [PMID: 38042121 DOI: 10.1016/j.saa.2023.123688] [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: 10/11/2023] [Revised: 11/17/2023] [Accepted: 11/26/2023] [Indexed: 12/04/2023]
Abstract
Silicon-xanthene derivatives (SiXs) have gained popularity in the field of bioimaging due to their advantageous far-red to near-infrared (NIR) absorption and emission wavelengths, notable brightness (ε × Φ), inherent mitochondrial targeting properties and high photo-stability, making them an excellent candidate for photodynamic therapy (PDT). Nevertheless, the utilization of SiXs as photosensitizers (PSs) for PDT in cancer treatment remains largely unexplored, primarily due to their limited capacity to generate cytotoxic reactive oxygen species (ROS). However, the potential of SiXs in PDT warrants further investigation. In this study, utilizing the spin-orbit charge transfer-induced intersystem crossing (SOCT-ISC) mechanism, we reported one novel heavy-atom-free, mitochondria-targeted, silicon-rhodamine-based photosensitizer (SiR-PXZ), which demonstrated excellent biocompatibility, minimal dark toxicity, favorable water-solubility and stability, and considerable singlet oxygen quantum yield under 660 nm light irradiation (ΦΔ = 0.16 in air-saturated PBS). Moreover, SiR-PXZ could be rapidly taken up by the mitochondria and efficiently induced apoptosis of cancer cells with an IC50 value of 1.2 μM. The in vivo studies showed that SiR-PXZ exhibited excellent anti-tumor effects, making it potentially valuable for clinical application. This study offers a source of ideas for the construction of SiXs-based photosensitizers for photodynamic cancer treatment in the future.
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Affiliation(s)
- Hongxing Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Guoxi Ren
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Wenhua Hou
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Lijuan Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yuanqiang Sun
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Jing Liu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
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3
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Li YL, Min XH, Fan YJ, Dong JX, Wu D, Ren X, Ma HM, Gao ZF, Wei Q, Xia F, Ju H. Photocleavable DNA Nanotube-Based Dual-Amplified Resonance Rayleigh Scattering System for MicroRNA Detection Incorporating Molecular Computing-Cascaded Keypad Lock Functionality. Anal Chem 2024. [PMID: 38324019 DOI: 10.1021/acs.analchem.3c04718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Cascade molecular events in complex systems are of vital importance for enhancing molecular diagnosis and information processing. However, the conversion of a cascaded biosensing system into a multilayer encrypted molecular keypad lock remains a significant challenge in the development of molecular logic devices. In this study, we present a photocleavable DNA nanotube-based dual-amplified resonance Rayleigh scattering (RRS) system for detecting microRNA-126 (miR-126). The cascading dual-amplification biosensing system provides a multilayer-encrypted prototype with the functionality of a molecular computing cascade keypad lock. RRS signals were greatly amplified by using photocleavable DNA nanotubes and enzyme-assisted strand displacement amplification (SDA). In the presence of miR-126, enzyme-assisted SDA produced numerous identical nucleotide fragments as the target, which were then specifically attached to magnetic beads through the DNA nanotube by using a Y-shaped DNA scaffold. Upon ultraviolet irradiation, the DNA nanotube was released into the solution, resulting in an increase in the intensity of the RRS signal. This strategy demonstrated a low limit of detection (0.16 fM) and a wide dynamic range (1 fM to 1 nM) for miR-126. Impressively, the enzyme-assisted SDA offers a molecular computing model for generating the target pool, which serves as the input element for unlocking the system. By cascading the molecular computing process, we successfully constructed a molecular keypad lock with a multilevel authentication technique. The proposed system holds great potential for applications in molecular diagnosis and information security, indicating significant value in integrating molecular circuits for intelligent sensing.
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Affiliation(s)
- Yan Lei Li
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xue Hong Min
- Equine Science Research and Doping Control Center, Wuhan Business University, Wuhan 430056, P. R. China
| | - Ya Jie Fan
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Jiang Xue Dong
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Dan Wu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xiang Ren
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Hong Min Ma
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Zhong Feng Gao
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Fan Xia
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Huangxian Ju
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210023, P. R. China
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4
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Baser A, Basar B, Dogan HB, Sener G, Ozsamur NG, Celik FS, Altves S, Erbas-Cakmak S. Reprograming cancer cells by a BODIPY G-quadruplex stabiliser. Chem Commun (Camb) 2023; 59:12447-12450. [PMID: 37779498 DOI: 10.1039/d3cc03453d] [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: 10/03/2023]
Abstract
A cationic BODIPY-based G-quadruplex-selective stabiliser is developed and shown to decrease cancer cell migration-invasion up to 90%. The expression of critical genes (HIF1α, VIM, CDH1) related to metastasis is modulated. The stabiliser reprograms hypoxia-adaptive metabolism and an 1.82-fold increase in O2 consumption, enabling back-to-normal switching of energy metabolism, is observed. Stabilisers with a strong G-quadruplex affinity (0.38 μM Kd) significantly contribute to small molecule anti-cancer approaches.
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Affiliation(s)
- Aminesena Baser
- Konya Food and Agriculture University, Beysehir Cd. No: 9 Meram, Konya, Turkey
| | - Beyza Basar
- Department of Molecular Biology and Genetics, Faculty of Science, Necmettin Erbakan University, Ahmet Kelesoglu Yerleskesi, Meram, 42090, Konya, Turkey.
- Science and Research Application Center (BİTAM), Necmettin Erbakan University, Koycegiz Yerleskesi, Meram, 42140, Konya, Turkey
| | - Hanim Beyza Dogan
- Konya Food and Agriculture University, Beysehir Cd. No: 9 Meram, Konya, Turkey
| | - Gulnur Sener
- Konya Food and Agriculture University, Beysehir Cd. No: 9 Meram, Konya, Turkey
| | - Nezahat Gokce Ozsamur
- Department of Molecular Biology and Genetics, Faculty of Science, Necmettin Erbakan University, Ahmet Kelesoglu Yerleskesi, Meram, 42090, Konya, Turkey.
- Science and Research Application Center (BİTAM), Necmettin Erbakan University, Koycegiz Yerleskesi, Meram, 42140, Konya, Turkey
| | - Fatma Secer Celik
- Department of Molecular Biology and Genetics, Faculty of Science, Necmettin Erbakan University, Ahmet Kelesoglu Yerleskesi, Meram, 42090, Konya, Turkey.
| | - Safaa Altves
- Department of Medicinal Biology, Institute of Health Sciences, Necmettin Erbakan University, Meram, 42080, Konya, Turkey
| | - Sundus Erbas-Cakmak
- Department of Molecular Biology and Genetics, Faculty of Science, Necmettin Erbakan University, Ahmet Kelesoglu Yerleskesi, Meram, 42090, Konya, Turkey.
- Science and Research Application Center (BİTAM), Necmettin Erbakan University, Koycegiz Yerleskesi, Meram, 42140, Konya, Turkey
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5
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Tam LKB, Chu JCH, He L, Yang C, Han KC, Cheung PCK, Ng DKP, Lo PC. Enzyme-Responsive Double-Locked Photodynamic Molecular Beacon for Targeted Photodynamic Anticancer Therapy. J Am Chem Soc 2023; 145:7361-7375. [PMID: 36961946 PMCID: PMC10080691 DOI: 10.1021/jacs.2c13732] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
An advanced photodynamic molecular beacon (PMB) was designed and synthesized, in which a distyryl boron dipyrromethene (DSBDP)-based photosensitizer and a Black Hole Quencher 3 moiety were connected via two peptide segments containing the sequences PLGVR and GFLG, respectively, of a cyclic peptide. These two short peptide sequences are well-known substrates of matrix metalloproteinase-2 (MMP-2) and cathepsin B, respectively, both of which are overexpressed in a wide range of cancer cells either extracellularly (for MMP-2) or intracellularly (for cathepsin B). Owing to the efficient Förster resonance energy transfer between the two components, this PMB was fully quenched in the native form. Only upon interaction with both MMP-2 and cathepsin B, either in a buffer solution or in cancer cells, both of the segments were cleaved specifically, and the two components could be completely separated, thereby restoring the photodynamic activities of the DSBDP moiety. This PMB could also be activated in tumors, and it effectively suppressed the tumor growth in A549 tumor-bearing nude mice upon laser irradiation without causing notable side effects. In particular, it did not cause skin photosensitivity, which is a very common side effect of photodynamic therapy (PDT) using conventional "always-on" photosensitizers. The overall results showed that this "double-locked" PMB functioned as a biological AND logic gate that could only be unlocked by the coexistence of two tumor-associated enzymes, which could greatly enhance the tumor specificity in PDT.
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Affiliation(s)
- Leo K B Tam
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Jacky C H Chu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Lin He
- Department of Biomedical Sciences and Tung Biomedical Sciences Centre, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Caixia Yang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Kam-Chu Han
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong, China
| | - Peter Chi Keung Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Pui-Chi Lo
- Department of Biomedical Sciences and Tung Biomedical Sciences Centre, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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6
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Abstract
Featured with molecule-level data encryption, molecular keypad locks show attractive merits in information security. Most of the previous multiple-input locks use fluorescence as output but are impeded by inefficient/labile prequenching or highly synthetic complexity/difficulty of the fluorophore-containing processor molecules. We herein propose a facile three-input molecular keypad lock, which is simple in synthesis and label free but capable of in situ generation of a fluorescent moiety (dityrosine) for background-free fluorescence readout. A nonfluorescent ("Locked") tyrosine derivate zYpc was easily synthesized as the processor. The correct "password" (i.e., UV → ALP → TYR, ABC) stepwise converted zYpc to a dityrosine-containing product, exhibiting a bright blue fluorescence output ("Open"). In contrast, wrongly permutated inputs failed to open this lock. This device shows potential to be extended as a more advanced keypad lock with better security.
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Affiliation(s)
- Xianbao Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing 210096, China
| | - Tiantian Xia
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing 210096, China
| | - Lingling Xu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing 210096, China
| | - Wenjun Zhan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing 210096, China
| | - Gaolin Liang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou, Nanjing 210096, China
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7
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Uyar B, Ozsamur NG, Celik FS, Ozbayram I, Erbas-Cakmak S. Downregulation of gene expression in hypoxic cancer cells by an activatable G-quadruplex stabiliser. Chem Commun (Camb) 2023; 59:2247-2250. [PMID: 36723070 DOI: 10.1039/d2cc06347f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In the research, the modulation of gene expression with a novel G-quadruplex stabiliser was analysed. Activation by the removal of bulky hypoxia-responsive substituent enhances G-quadruplex stabilisation. Hypoxic MCF7 cells incubated with the stabiliser displayed significant downregulation of oncogenes c-myc, bcl-2, and hif-1α. This study presents the first hypoxia-activatable G-quadruplex stabilization and transcriptional regulation.
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Affiliation(s)
- Busra Uyar
- Konya Food and Agriculture University, Department of Biotechnology, Konya 42080, Turkey.
| | - Nezahat Gokce Ozsamur
- Konya Food and Agriculture University, Department of Biotechnology, Konya 42080, Turkey.
| | - Fatma Secer Celik
- Konya Food and Agriculture University, Department of Biotechnology, Konya 42080, Turkey.
| | - Ilkyaz Ozbayram
- Konya Food and Agriculture University, Department of Biotechnology, Konya 42080, Turkey.
| | - Sundus Erbas-Cakmak
- Konya Food and Agriculture University, Department of Biotechnology, Konya 42080, Turkey. .,Konya Food and Agriculture University, Department of Molecular Biology and Genetics, Konya 42080, Turkey
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8
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Cascaded molecular logic gates using antibiotics as inputs based on exonuclease III and DNAzyme. Talanta 2023; 252:123832. [DOI: 10.1016/j.talanta.2022.123832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/03/2022] [Accepted: 08/07/2022] [Indexed: 11/18/2022]
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9
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Tam LKB, He L, Ng DKP, Cheung PCK, Lo P. A Tumor‐Targeting Dual‐Stimuli‐Activatable Photodynamic Molecular Beacon for Precise Photodynamic Therapy. Chemistry 2022; 28:e202201652. [DOI: 10.1002/chem.202201652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Leo K. B. Tam
- Department of Chemistry The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Lin He
- Department of Biomedical Sciences City University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong China
| | - Dennis K. P. Ng
- Department of Chemistry The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Peter C. K. Cheung
- School of Life Sciences The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Pui‐Chi Lo
- Department of Biomedical Sciences City University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong China
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10
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Liu J, Córdova Wong BJ, Liu T, Yang H, Yao Ye L, Lei J. Glutathione‐Responsive Heterogeneous Metal–Organic Framework Hybrids for Photodynamic‐Gene Synergetic Cell Apoptosis. Chemistry 2022; 28:e202200305. [DOI: 10.1002/chem.202200305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Jintong Liu
- State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
- Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Bernardino J. Córdova Wong
- State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Tianrui Liu
- State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Hong Yang
- Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Lin Yao Ye
- Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 P. R. China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
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11
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Pan J, Deng F, Liu Z, Shi G, Chen J. Toehold-Mediated Cascade Catalytic Assembly for Mycotoxin Detection and Its Logic Applications. Anal Chem 2022; 94:3693-3700. [PMID: 35176850 DOI: 10.1021/acs.analchem.1c05485] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this work, an enzyme-free biosensor is reported for mycotoxin detection based on a toehold-mediated catalytic hairpin assembly (CHA) and a DNAzyme-cascaded hydrolysis reaction. In the presence of a mycotoxin, the recognition between an aptamer and the mycotoxin releases the trigger DNA. The trigger DNA initiates the toehold-mediated CHA, generating large amounts of partial duplex B/C with four toeholds, which can be used to assemble the DNAzyme-cascaded hydrolysis reaction. Furthermore, through a collaborative autoassembly reaction among the B/C duplex, DNA1, and DNA2, supramolecular nanostructures corresponding to Mg2+-dependent DNAzymes can be formed. With the incubation of Mg2+, the dual-modified (TAMRA/BHQ2) substrate strand DNA2 will be cleaved into two fragments, yielding a high TAMRA fluorescence signal for mycotoxin testing. Under optimal conditions, the sensing system was ultrasensitive and showed low detection limits of 0.2 pM for ochratoxin A (OTA), 0.13 pM for aflatoxin B1 (AFB1), and 0.17 pM for zearalenone (ZEN). The mycotoxin aptasensor also exhibited high selectivity and was successfully applied for the quantitative analysis of OTA, AFB1, and ZEN in wine samples. Due to the advantages of flexibility and versatility, this mycotoxin platform was used to fabricate several concatenated logic gates including "AND-INHIBIT", "INHIBIT-OR", "OR-AND", and "OR-INHIBIT" logic biocomputings. Such multiple functions of the logic system provided a universal sensing strategy for the intelligent detection of multiplex mycotoxins, demonstrating considerable potential in food safety and environmental monitoring.
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Affiliation(s)
- Jiafeng Pan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Fang Deng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Zhi Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Gu Shi
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Junhua Chen
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
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12
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Verirsen I, Uyar B, Ozsamur NG, Demirok N, Erbas-Cakmak S. Enzyme activatable photodynamic therapy agents targeting melanoma. Org Biomol Chem 2022; 20:8864-8868. [DOI: 10.1039/d2ob01937j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A tyrosinase activatable photosensitizer is developed with selective phototoxicity to melanoma cells.
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Affiliation(s)
- Imran Verirsen
- Konya Food and Agriculture University, Faculty of Science, Department of Biotechnology, 42080, Konya, Turkey
| | - Busra Uyar
- Konya Food and Agriculture University, Faculty of Science, Department of Biotechnology, 42080, Konya, Turkey
| | - Nezahat Gokce Ozsamur
- Konya Food and Agriculture University, Faculty of Science, Department of Biotechnology, 42080, Konya, Turkey
| | - Naime Demirok
- Konya Food and Agriculture University, Faculty of Science, Department of Biotechnology, 42080, Konya, Turkey
| | - Sundus Erbas-Cakmak
- Konya Food and Agriculture University, Faculty of Science, Department of Biotechnology, 42080, Konya, Turkey
- Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080, Konya, Turkey
- Konya Food and Agriculture University, Department of Molecular Biology and Genetics, 42080, Konya, Turkey
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13
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ERBAŞ ÇAKMAK S. Development of dual enzyme responsive molecular AND logic gate. Turk J Chem 2021; 46:567-574. [PMID: 38143461 PMCID: PMC10734702 DOI: 10.3906/kim-2111-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 04/27/2022] [Accepted: 12/24/2021] [Indexed: 12/26/2023] Open
Abstract
Molecular logic gates are information processing devices that can respond to environmental signals and produce a readable output in response through Boolean logic operations. Molecules with these properties have been used to build smart sensors and therapeutic agents. In this work, dual enzyme-responsive molecular AND logic gate is developed with the intention to discriminate various combinations of enzyme level and/or activity. A resorufin-based sensor is substituted with self-immolative tyrosinase recognition site, 3-hydroxy benzyl group. The Hydroxyl group is protected with acetyl moiety which decreases the affinity of the enzyme. When both tyrosinase and esterase are present in the solution, the acetyl group is removed by the latter enzyme, allowing the former to recognise the ligand. Oxidation of the ligand by tyrosinase triggers self-immolative cleavage of the substitution, leading to almost 70 fold enhancement in fluorescence. When single enzyme is applied, there is no significant change in the emission intensity overall, an AND logic gate is constructed. Selectivity and Michaelis-Menten kinetics of the sensor is analysed. Smart molecular probes can contribute to the research on the development of biosensors that can discriminate diseases having characteristic combinations of enzyme activities.
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Affiliation(s)
- Sündüs ERBAŞ ÇAKMAK
- Department of Molecular Biology and Genetics, Konya Food and Agriculture University, Konya,
Turkey
- Biotechnology Graduate Program, Konya Food and Agriculture University, Konya,
Turkey
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14
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Tam LKB, Yu L, Wong RCH, Fong WP, Ng DKP, Lo PC. Dual Cathepsin B and Glutathione-Activated Dimeric and Trimeric Phthalocyanine-Based Photodynamic Molecular Beacons for Targeted Photodynamic Therapy. J Med Chem 2021; 64:17455-17467. [PMID: 34846143 DOI: 10.1021/acs.jmedchem.1c01634] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two dual stimuli-activated photosensitizers were developed, in which two or three glutathione (GSH)-responsive 2,4-dinitrobenzenesulfonate (DNBS)-substituted zinc(II) phthalocyanine units were connected via one or two cathepsin B-cleavable Gly-Phe-Leu-Gly peptide linker(s). These dimeric and trimeric phthalocyanines were fully quenched in the native form due to the photoinduced electron transfer to the DNBS substituents and the self-quenching of the phthalocyanine units. In the presence of GSH and cathepsin B, or upon internalization into A549 and HepG2 cancer cells, these probes were activated through the release of free phthalocyanine units. The intracellular fluorescence intensity was increased upon post-incubation with GSH ester or reduced upon pre-treatment with a cathepsin B inhibitor. Upon light irradiation, these photosensitizers became highly cytotoxic with IC50 values of 0.21-0.39 μM. The photocytotoxicity was also dependent on the intracellular GSH and cathepsin B levels. The results showed that these conjugates could serve as smart photosensitizers for targeted photodynamic therapy.
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Affiliation(s)
- Leo K B Tam
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Ligang Yu
- Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Roy C H Wong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Wing-Ping Fong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Pui-Chi Lo
- Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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Zhu Z, Zhang X, Guo X, Wu Q, Li Z, Yu C, Hao E, Jiao L, Zhao J. Orthogonally aligned cyclic BODIPY arrays with long-lived triplet excited states as efficient heavy-atom-free photosensitizers. Chem Sci 2021; 12:14944-14951. [PMID: 34820111 PMCID: PMC8597848 DOI: 10.1039/d1sc04893g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/28/2021] [Indexed: 02/06/2023] Open
Abstract
In photosensitizers, long triplet excited state lifetimes are key to their efficient electron transfer or energy transfer processes. Herein, we report a novel class of cyclic trimeric BODIPY arrays which were efficiently generated from easily accessible meso-mesityldipyrrinone and arylboronic acids in one pot. Arylboronic acid, for the first time, was used to provide a boron source for BODIPY derivatives. Due to the well-defined and orthogonally aligned BODIPY cores as verified by X-ray crystallography, these BODIPY arrays show strong exciton coupling effects and efficient intersystem crossings, and are novel heavy-atom-free photosensitizers with a long-lived triplet excited state (lifetime up to 257.5 μs) and good reactive oxygen species generation efficiency (up to 0.72) contributed by both 1O2 and O2 -˙ under light irradiation.
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Affiliation(s)
- Zhaoyang Zhu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Xue Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 China
| | - Xing Guo
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Qinghua Wu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Zhongxin Li
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Changjiang Yu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Erhong Hao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Lijuan Jiao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 China
| | - Jianzhang Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 China
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