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Zhong H, Yu L, Lv X, Yu Y, Hu J. A novel approach to assess the health risk of aryl hydrocarbon receptor-bound contaminants via inhalation exposure using CYP1A1 expression as a biomarker. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 279:116466. [PMID: 38759533 DOI: 10.1016/j.ecoenv.2024.116466] [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: 12/05/2023] [Revised: 05/12/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) and dioxins are potential causes of multiple diseases by activating the aryl hydrocarbon receptor (AhR) pathway. Health risk assessment of chemicals primarily relies on the relative potency factor (RPF), although its accuracy may be limited when solely using EC50 values. The induction of cytochrome P4501A1 (CYP1A1) serves as a biomarker for AhR activation and is an integrator of dioxin-like toxicity. Here, we present a method for evaluating the risks associated with AhR activation using mathematical models of dose-CYP1A1 induction. The dose-effect curves for certain PAHs and dioxins, including Ant, BghiP, 1,2,3,4,7,8-HxCDD, and others, exhibited a non-classical S-shaped form. The toxic equivalent factor (TEF) profiles revealed a broad range of toxic equivalent factor values. The TEFs for PAHs ranged from approximately 0.01 to 6, with higher values being observed when the concentration was less than 10-10 M, with the exceptions of Ace, Phe, and BghiP. Most congeners of dioxins got the lowest TEF value at around 10-10 M, ranging from 0.04 to 1.00. The binding affinity of AhR to ligands did not display a strong correlation with the EC50 of CYP1A1 expression, suggesting that the AhR-mediated effects of PAHs and dioxins are not fixed but instead fluctuate with the dose. Air samples acquired from a parking area were used to compare the proficiency of RPF and our current approach. In the current method, naphthalene and chrysene were the primary contributors of PAHs to AhR-mediated risks in parking lots air samples, respectively. However, the contributions of naphthalene and chrysene could be disregarded in the RPF approach.
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Affiliation(s)
- Huixia Zhong
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Lili Yu
- Shenzhen People's Hospital, The 2nd Clinical Medical College of Jinan University, Shenzhen, 518020, PR China
| | - Xiaomei Lv
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, PR China
| | - Yingxin Yu
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
| | - Junjie Hu
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, PR China.
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Tang X, Chen Y, Wang B, Luo D, Wang J, He Y, Feng L, Xu Y, Xie S, Chen M, Chang K. Autonomous Feedback-Driven Engineered DNAzyme-Coated Trojan Horse-like Nanocapsules for On-Demand CRISPR/Cas9 Delivery. ACS NANO 2024; 18:13950-13965. [PMID: 38751197 PMCID: PMC11140835 DOI: 10.1021/acsnano.4c04147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/01/2024] [Accepted: 05/08/2024] [Indexed: 05/29/2024]
Abstract
Manipulating the expression of cellular genes through efficient CRISPR/Cas9 delivery is rapidly evolving into a desirable tumor therapeutics. The exposure of CRISPR/Cas9 to a complex external environment poses challenges for conventional delivery carriers in achieving responsive and accurate release. Here, we report a Trojan horse-like nanocapsule for the on-demand delivery of CRISPR/Cas9 in a microRNA-responsive manner, enabling precise tumor therapy. The nanocapsule comprises a nanoassembled, engineered DNAzyme shell encasing a Cas9/sgRNA complex core. The DNAzyme, functioning as a catalytic unit, undergoes a conformational change in the presence of tumor-associated microRNA, followed by activating a positive feedback-driven autonomous catabolic cycle of the nanocapsule shell. This catabolic cycle is accomplished through chain reactions of DNAzyme "cleavage-hybridization-cleavage", which ensures sensitivity in microRNA recognition and effective release of Cas9/sgRNA. Utilizing this Trojan horse-like nanocapsule, as low as 1.7 pM microRNA-21 can trigger the on-demand release of Cas9/sgRNA, enabling the specific editing of the protumorigenic microRNA coding gene. The resulting upregulation of tumor suppressor genes induces apoptosis in tumor cells, leading to significant inhibition of tumor growth by up to 75.94%. The Trojan horse-like nanocapsule, with superior programmability and biocompatibility, is anticipated to serve as a promising carrier for tailoring responsive gene editing systems, achieving enhanced antitumor specificity and efficacy.
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Affiliation(s)
- Xiaoqi Tang
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Yihui Chen
- Department
of General Surgery, Xinqiao Hospital, Army
Medical University, Chongqing 400037, China
| | - Binpan Wang
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Dan Luo
- Department
of Biological and Environmental Engineering, Cornell University, Ithaca New York 14853-5701, United States
| | - Jue Wang
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Yuan He
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Liu Feng
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Ying Xu
- Department
of Clinical Laboratory Medicine, School
of Clinical Medicine & The First Affiliated Hospital of Chengdu
Medical College, Chengdu 610500, China
| | - Shuang Xie
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Ming Chen
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
- College
of Pharmacy and Laboratory Medicine, Third
Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
| | - Kai Chang
- Department
of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan, Shapingba, Chongqing 400038, China
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Huang Z, Wang X, Wu Z, Jiang JH. Recent Advances on DNAzyme-Based Sensing. Chem Asian J 2022; 17:e202101414. [PMID: 35156764 DOI: 10.1002/asia.202101414] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 02/09/2022] [Indexed: 11/08/2022]
Abstract
DNAzymes are functional nucleic acid with catalytic activity. Owing to the high sensitivity, excellent programmability, and flexible obtainment through in vitro selection, RNA-cleaving DNAzymes have attracted increasing interest in developing DNAzyme-based sensors. In this review, we summarize the recent advances on DNAzyme-based sensing applications. We initially conclude two general strategies to expand the library of DNAzymes, in vitro selection to discover new DNAzymes towards different targets of interest and chemical modifications to endue the existing DNAzymes with new function or properties. We then discuss the recent applications of DNAzyme-based sensors for the detection of a variety of important biomolecules both in vitro and in vivo . Finally, perspectives on the challenges and future directions in the development of DNAzyme-based sensors are provided.
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Affiliation(s)
- Zhimei Huang
- Hunan University, College of Chemistry and Chemical Engineering, CHINA
| | - Xiangnan Wang
- Hunan University of Technology and Business, College of Science, CHINA
| | - Zhenkun Wu
- Hunan University, State Key Laboratory of Chemeo/Bio-Sensing and Chemometrics and College of Chemistry and Chemical Engineering, South of Lushan Road, 410082, Changsha, CHINA
| | - Jian-Hui Jiang
- Hunan University, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Chemistry and Chemical Engineering, CHINA
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Massana Roquero D, McCorduck B, Bollella P, Smutok O, Melman A, Katz E. Biomolecule Release from Alginate Composite Hydrogels Triggered by Logically Processed Signals. Chemphyschem 2021; 22:1967-1975. [PMID: 34309163 DOI: 10.1002/cphc.202100458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/16/2021] [Indexed: 12/31/2022]
Abstract
Alginate composite hydrogels that exhibit highly sensitive stimuli-responsive behavior were used for signal-stimulated release of pre-loaded insulin. The alginate pores, particularly located at the periphery, were blocked by interpenetration of polyvinyl alcohol (PVA) cross-linked with 1,3-benzenediboronic acid (IPN), thus, significantly reducing uncontrolled leakage of the entrapped biomolecules. The beads were loaded with insulin and various enzymes mimicking different Boolean logic gates (AND, OR, NOR, IMP, INHIB). The enzymes were activated with biologically relevant input signals applied in four logic combinations: 0,0; 1,0; 0,1; 1,1, having the production of H2 O2 as the result of the biocatalytic reactions. The "successful" combination of the input signals leading to the H2 O2 production was different for different logic gates, following the corresponding truth tables of the logic gates. When H2 O2 was produced, boronate ester bonds were oxidized and the IPN was irreversibly degraded, thus re-opening the original pores of the hydrogel. This process allowed release of insulin from the alginate beads. The smart soft material that we have developed tackled well-known limitations of these systems and it may prove valuable in future medical diagnostics or treatments.
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Affiliation(s)
- Daniel Massana Roquero
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
| | - Brandon McCorduck
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
| | - Paolo Bollella
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA.,Department of Chemistry, University of Bari A. Moro, Via E. Orabona 4, 70125, Bari, Italy
| | - Oleh Smutok
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
| | - Artem Melman
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
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Wu Y, Li J, Quan K, Meng X, Yang X, Huang J, Wang K. A DNAzyme cascade for amplified detection of intracellular miRNA. Chem Commun (Camb) 2020; 56:10163-10166. [PMID: 32744553 DOI: 10.1039/d0cc02847a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Inspired by the natural enzyme cascade reaction, an artificial DNAzyme cascade system is developed for the amplified detection of intracellular miR-141. The results showed that the method enormously enhanced the readout of the fluorescence signal and achieved a femtomolar detection limit.
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Affiliation(s)
- Yanan Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
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