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Garg S, Goel N. Encapsulation of heavy metal ions via adsorption using cellulose/ZnO composite: First principles approach. J Mol Graph Model 2023; 124:108566. [PMID: 37487371 DOI: 10.1016/j.jmgm.2023.108566] [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: 05/30/2023] [Revised: 06/26/2023] [Accepted: 07/12/2023] [Indexed: 07/26/2023]
Abstract
The primary goal of the current research is to describe an effective and eco-friendly adsorbent for the removal of aquatic micropollutants. The design of the cellulose-modified zinc oxide (ZnO) nanocomposite was successfully carried out by density functional calculations. The proposed structures of the constituent and composite materials were confirmed using formation energy (Ef), frontier orbitals, band gaps (Egap), density of state (DOS) plots, natural bond orbitals (NBO), and UV-Vis spectral analysis. The cellulose/(ZnO)12 composite was further used for the adsorption of different heavy metal ions such as Hg(II), Pb(II), Cd(II), Ni(II), and As(III) through calculation of electronic and optical properties. The values of the adsorption energy (Eads) show that the As(III) interacted better with the composite in both phases, i.e., gas (-806.98 kcal/mol) and aqueous (-491.66 kcal/mol). The analysis of frontier molecular orbital data exhibited a decrease in the Egap of composite@metal ion complexes. The high negative value of the solvation energies (ΔEsol) indicates the suitability of composite@metal ions in an aqueous environment. The nature of interactions between metal ions and the composite unit is analyzed by noncovalent interactions (NCI) and the quantum theory of atoms in molecules (QTAIM). The theoretical results of the present study show the feasibility of the cellulose/(ZnO)12 composite for the removal of heavy metal ions and provide useful information to experimentalists to treat contaminated water.
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Affiliation(s)
- Shivangi Garg
- Computational and Theoretical Chemistry Group, Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
| | - Neetu Goel
- Computational and Theoretical Chemistry Group, Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
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Li Y, Li W, Liu Y, Liu J, Yuan X, Zhang J, Shen H. Defect-rich platinum-zinc oxide heterojunction as a potent ROS amplifier for synergistic sono-catalytic therapy. Acta Biomater 2023; 171:543-552. [PMID: 37739245 DOI: 10.1016/j.actbio.2023.09.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 09/13/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023]
Abstract
Sonodynamic therapy (SDT) is a physical therapy that utilizes critical sonosensitizers triggered by ultrasound to achieve an effective non-invasive tumor treatment. However, the inadequate sonodynamic efficacy and low responsive activities of traditional inorganic sonosensitizers have hindered its practical application. Here, we rationally design a platinum-zinc oxide (PtZnO) sonosensitizer to significantly enhance the efficacy of SDT through its inherent bandgap structure and dual-nanozyme activities. The PtZnO possesses a narrow bandgap (2.89 eV) and an appropriate amount of oxygen defects, which promote the efficiency of electrons and holes separation and the generation of reactive oxygen species (ROS) under US irradiation. Simultaneously, the PtZnO exhibits both catalase-like and peroxidase-like activities, which effectively catalyze endogenous H2O2 into a large number of O2 and toxic hydroxyl radicals (•OH), thus achieving an efficient enhancement of SDT and catalytic therapy. Moreover, the PtZnO has significant glutathione consumption performance, further amplifying the oxidative stress. Ultimately, the PtZnO achieves a triple ROS amplification effect, with the yields of singlet oxygen (1O2) and •OH reaching 859.1 % and 614.4 %, respectively, inducing a highly effective sono-catalytic therapy with a remarkable tumor inhibition rate of 98.1 %. This study expands the application of ZnO semiconductor heterojunctions in the nanomedicine area, and the simple yet efficient design of the PtZnO provides a strategy for the development of sonosensitizers. STATEMENT OF SIGNIFICANCE: A platinum-zinc oxide (PtZnO) heterojunction sonosensitizer is constructed with dual-nanozyme activities and achieves a triple ROS amplification effect, leading to an efficient synergistic sono-catalytic therapy. The PtZnO owns an inherent narrow bandgap and abundant oxygen defects, thus exhibiting an efficient sonosensitizer performance. It also possesses both catalase-like and peroxidase-like activities, which effectively catalyze the endogenous H2O2 into a large quantity of O2 and toxic hydroxyl radicals, thereby enhancing the SDT and catalytic therapy. Furthermore, its prominent glutathione consumption performance further amplifies oxidative stress. The yields of singlet oxygen and hydroxyl radicals reach up to 859.1 % and 614.4 %, respectively, inducing a highly effective sono-catalytic therapy with an impressive tumor inhibition rate of 98.1 %.
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Affiliation(s)
- Yuxuan Li
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wenxin Li
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yian Liu
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jiahui Liu
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xinru Yuan
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jiarui Zhang
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China
| | - Heyun Shen
- Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China.
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Lang Y, Wang Y, Zhou R, Wu P. Self-Immolative Polythiophene for Sunlight Inactivation of Harmful Cyanobacteria. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:7800-7808. [PMID: 37163388 DOI: 10.1021/acs.est.2c08868] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Harmful cyanobacterial blooms and the released microcystins (MCs) caused serious environmental and public health concerns to drinking water safety. Photo-oxidation is an appealing treatment option and alternative to conventional flocculation and microbial antagonists, but the performances of current photosensitizers (either inorganic or organic) are unsatisfactory. Here, a polythiophene photosensitizer (PT10) with both high yield of reactive oxygen species (ROS) production (mainly 1O2, ΦΔ = 0.51, > 8 h continuous generation) and moderate photostability was used as a powerful algaecide to inhibit Microcystis aeruginosa. Due to the positive charge of PT10, the algal cells were quickly flocculated, followed by efficient inactivation in 4 h under white light irradiation (96.7%, 10 mW/cm2). Meanwhile, PT10 was self-immolated in about 6 h. Upon biosafety evaluation with adult zebrafish, the low toxicity of PT10 and the degradation products of PT10 and algae (early logarithmic growth stage) were confirmed. In addition, microcystin-LR (MC-LR), a toxic microcystin that will be released during the destruction of the algal cells, was also degraded. Therefore, PT10-based photoinactivation of M. aeruginosa featured both high performance and low secondary pollution. In real-world aquatic systems, PT10 was confirmed to be capable of sunlight-assisted inactivation of M. aeruginosa and prevent algal blooms, thus making it appealing for environmental remediation.
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Affiliation(s)
- Yunhe Lang
- Analytical & Testing Centre, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610064, China
| | - Ying Wang
- Analytical & Testing Centre, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610064, China
| | - Ronghui Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Peng Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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Garg S, Goel N. First principle study of hybrid materials based on conjugated polymers and zirconium oxide as a proficient sensor for H 2S gas. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2150332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Shivangi Garg
- Computational and Theoretical Chemistry Group, Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Neetu Goel
- Computational and Theoretical Chemistry Group, Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
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Hu Z, Song X, Ding L, Cai Y, Yu L, Zhang L, Zhou Y, Chen Y. Engineering Fe/Mn-doped zinc oxide nanosonosensitizers for ultrasound-activated and multiple ferroptosis-augmented nanodynamic tumor suppression. Mater Today Bio 2022; 16:100452. [PMID: 36245834 PMCID: PMC9557028 DOI: 10.1016/j.mtbio.2022.100452] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 11/18/2022] Open
Abstract
As an effective tumor-therapeutic modality, ultrasound-triggered sonodynamic therapy (SDT) has been extensively explored to induce cancer cell death by activating sonosensitizers to generate reactive oxygen species (ROS). However, the traditional inorganic semiconductor-based sonosensitizers still suffer from inefficient ROS production because of the low separation efficiency of electrons and holes (e-/h+) and their fast recombination. Herein, the iron (Fe) and manganese (Mn) co-doped zinc oxide nanosonosensitizers have been rationally designed and engineered for augmenting the SDT efficiency against tumor by inducing both multiple ferroptosis and apoptosis of tumor cells. The Fe/Mn component was co-doped into the nannostructure of ZnO nanosonosensitizers, which not only catalyzed the Fenton reaction in the hydrogen peroxide-overexpressed tumor microenvironment to produce ROS, but also depleted intracellular glutathione to suppress the consumption of ROS. The doping nanostructure in the engineered nanosonosensitizers substantially augmented the SDT efficacy of ZnO nanosonosensitizers by promoting the separation and hindering the recombination of e-/h+ under ultrasound activation. The multiple ferroptosis and apoptosis in the enhanced SDT effect of Fe/Mn co-doped ZnO nanosonosensitizers were solidly demonstrated both in vitro and in vivo on tumor-bearing mice in accompany with the detailed mechanism assessment by RNA sequenching. This work provides a distinct strategy to augment the nanomedicine-enabled SDT efficency by engineering the inorganic semiconductor-based nanosonosensitizers with transitional metal doping and inducing multiple cell-death pathways including ferroptosis.
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Affiliation(s)
- Zhongqian Hu
- Department of Ultrasound and Radiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, 210009, PR China
| | - Xinran Song
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Tongji University Cancer Center, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, Tongji University School of Medicine, Shanghai, PR China
| | - Li Ding
- Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Tongji University Cancer Center, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, Tongji University School of Medicine, Shanghai, PR China
| | - Yu Cai
- Department of Ultrasound and Radiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, 210009, PR China
| | - Luodan Yu
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China,Corresponding author.
| | - Lijuan Zhang
- Department of Ultrasound, The Fourth Affiliated Hospital, Nanjing Medical University, Nanjing, 210029, PR China,Corresponding author.
| | - Yajun Zhou
- Department of Ultrasound, The Fourth Affiliated Hospital, Nanjing Medical University, Nanjing, 210029, PR China,Corresponding author.
| | - Yu Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China,Corresponding author.
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